subject:(Constructed wetlands)

University of Georgia

1. Ruiz, Alina Marcela. An assessment of a constructed wastewater treatment wetland complex as urban amphibian habitat.

Degree: MS, Forest Resources, 2007, University of Georgia

URL: http://purl.galileo.usg.edu/uga_etd/ruiz_alina_m_200712_ms

► The rapid growth of urban areas is largely responsible for simultaneous increases in demand for potable water and habitat loss for wildlife. Constructed wetlands are… (more)

Subjects/Keywords: Constructed Wetlands

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APA (6^th Edition):

Ruiz, A. M. (2007). An assessment of a constructed wastewater treatment wetland complex as urban amphibian habitat. (Masters Thesis). University of Georgia. Retrieved from http://purl.galileo.usg.edu/uga_etd/ruiz_alina_m_200712_ms

Chicago Manual of Style (16^th Edition):

Ruiz, Alina Marcela. “An assessment of a constructed wastewater treatment wetland complex as urban amphibian habitat.” 2007. Masters Thesis, University of Georgia. Accessed October 20, 2019. http://purl.galileo.usg.edu/uga_etd/ruiz_alina_m_200712_ms.

MLA Handbook (7^th Edition):

Ruiz, Alina Marcela. “An assessment of a constructed wastewater treatment wetland complex as urban amphibian habitat.” 2007. Web. 20 Oct 2019.

Vancouver:

Ruiz AM. An assessment of a constructed wastewater treatment wetland complex as urban amphibian habitat. [Internet] [Masters thesis]. University of Georgia; 2007. [cited 2019 Oct 20]. Available from: http://purl.galileo.usg.edu/uga_etd/ruiz_alina_m_200712_ms.

Council of Science Editors:

Ruiz AM. An assessment of a constructed wastewater treatment wetland complex as urban amphibian habitat. [Masters Thesis]. University of Georgia; 2007. Available from: http://purl.galileo.usg.edu/uga_etd/ruiz_alina_m_200712_ms

2. Cosway, Katryn. FATE AND EFFECT OF TRICLOSAN AND SULFAMETHOXAZOLE WITHIN MESO-SCALE VERTICAL FLOW CONSTRUCTED WETLANDS.

Degree: MSc (MS/Maîtrise ès sciences), Chemistry and Chemical Engineering/Chimie et génie chimique, 2014, Royal Military College of Canada

URL: http://hdl.handle.net/11264/161

► The presence of pharmaceuticals and personal care products are increasing in our natural environment due to their incomplete removal within traditional wastewater treatment plants. Constructed… (more)

▼ The presence of pharmaceuticals and personal care products are increasing in our natural environment due to their incomplete removal within traditional wastewater treatment plants. Constructed wetlands are used as secondary or tertiary wastewater treatment and as such may receive both pharmaceuticals and personal care products with subsequent implications for their treatment efficacy. The aim of this study was to examine the fate and effects of antimicrobials in planted and unplanted vertical flow constructed wetlands. Twelve mesocosms were inoculated with activated sludge from the Cataraqui Bay Wastewater Treatment Plant. Six were planted with reed canary grass (Phalaris arundinacea) and the remaining six were left unplanted. The wetland mesocosms were assessed using a variety of parameters including water treatment (chemical oxygen demand removal rate), hydrological (porosity, evapotranspiration/evaporation) water quality (temperature, pH, specific conductivity, dissolved oxygen, redox potential, total dissolved solids), ecological (plant height and stem count), and microbial community function (community level physiological profiling).. Community-level physiological profiles were gathered for the wetland microbial community using Biolog EcoplatesTM. The development phase was initially characterized for all mesocosms over a ninety-day period to establish ecological stability. The microbial communities were then subjected to ex-situ, dose-response exposures (0 – 1000 μg/L) for trimethoprim, triclosan and sulfamethoxazole to gain an understanding of the ecotoxicity of these antimicrobials. Following the ex-situ exposures, in-situ exposures were performed with triclosan and sulfamethoxazole at low (100 μg/L) and high (500 μg/L) concentrations. The low concentration was selected based on literature reviews of the levels found in water bodies and the high concentration was selected to represent a shock-loading scenario. Hydrological, ecological and microbial parameters were monitored before, immediately after and over a recovery period of four weeks following each exposure. During the developmental period both the planted and unplanted mesocosms developed similarly and ecological stability was established. However, a distinct microbial community profile was observed in the planted mesocosms. In the ex-situ dose-response experiments the effect of trimethoprim was negligible on the planted microbial communities but with some removal of microbial function for the unplanted microbial communities. Triclosan exposure led to a moderate decline in microbial function for both the planted and unplanted communities. Sulfamethoxazole exposure led to a severe decline in microbial function in both the planted and unplanted microbial communities, so much so that negligible activity was observed at 1000 μg/L. Following the in-situ low and high exposures of triclosan and sulfamethoxazole there was a significant removal of the compounds (>80%) from the mesocosm water column. The effects of both low and high triclosan and sulfamethoxazole… Advisors/Committee Members: Royal Military College of Canada / Collège militaire royal du Canada, Weber, Kela.

Subjects/Keywords: constructed wetlands; emerging contaminants

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APA (6^th Edition):

Cosway, K. (2014). FATE AND EFFECT OF TRICLOSAN AND SULFAMETHOXAZOLE WITHIN MESO-SCALE VERTICAL FLOW CONSTRUCTED WETLANDS. (Masters Thesis). Royal Military College of Canada. Retrieved from http://hdl.handle.net/11264/161

Chicago Manual of Style (16^th Edition):

Cosway, Katryn. “FATE AND EFFECT OF TRICLOSAN AND SULFAMETHOXAZOLE WITHIN MESO-SCALE VERTICAL FLOW CONSTRUCTED WETLANDS.” 2014. Masters Thesis, Royal Military College of Canada. Accessed October 20, 2019. http://hdl.handle.net/11264/161.

MLA Handbook (7^th Edition):

Cosway, Katryn. “FATE AND EFFECT OF TRICLOSAN AND SULFAMETHOXAZOLE WITHIN MESO-SCALE VERTICAL FLOW CONSTRUCTED WETLANDS.” 2014. Web. 20 Oct 2019.

Vancouver:

Cosway K. FATE AND EFFECT OF TRICLOSAN AND SULFAMETHOXAZOLE WITHIN MESO-SCALE VERTICAL FLOW CONSTRUCTED WETLANDS. [Internet] [Masters thesis]. Royal Military College of Canada; 2014. [cited 2019 Oct 20]. Available from: http://hdl.handle.net/11264/161.

Council of Science Editors:

Cosway K. FATE AND EFFECT OF TRICLOSAN AND SULFAMETHOXAZOLE WITHIN MESO-SCALE VERTICAL FLOW CONSTRUCTED WETLANDS. [Masters Thesis]. Royal Military College of Canada; 2014. Available from: http://hdl.handle.net/11264/161

University of Vermont

3. Lee, Martin. Pilot-Scale Constructed Wetlands Combined with Phosphorus Removing Slag Filters for Treating Dairy Wastewater.

Degree: MS, Civil and Environmental Engineering, 2009, University of Vermont

URL: https://scholarworks.uvm.edu/graddis/135

► Pilot-scale constructed wetlands (CW), with electric arc furnace steel slag phosphorus removing filters were built and implemented for treating dairy wastewater on the Paul Miller… (more)

▼ Pilot-scale constructed wetlands (CW), with electric arc furnace steel slag phosphorus removing filters were built and implemented for treating dairy wastewater on the Paul Miller Dairy Farm at the University of Vermont. Two distinct CW types were used in the study, hybrid and integrated. Hybrid CWs consist of more than one CW in-series, and in this research three hybrid CW systems were tested. Two hybrid CWs used a vertical saturated flow (VF) CW followed in-series by a horizontal saturated flow (HF) CW. One hybrid CW used a HF CW followed in series by a second HF CW. In this study, three integrated CW systems were implemented which consisted of a CW followed by a phosphorus removing slag filter. Two integrated CW systems consisted of a VF CW followed in-series by a saturated horizontal flow slag filter. One integrated CW system consisted of a HF CW followed by a horizontal saturated flow slag filter. All individual CWs and slag filters had the same dimensions; a length, width, and height of 1.7m, 1.1 m, and 0.5 m, respectively. CWs were filled with 2 cm diameter gravel, topped with 3 cm of compost, and planted with river bulrush (Schoenoplectus fluviatilis). Slag filters were filled with 2-5 cm diameter slag, having a porosity of 0.42. From August to December of 2007 the six CW systems were fed with a pulse flow of dairy wastewater with a hydraulic loading rate of 1.9 cm/day. This gave a nominal retention time of ~10 days for each CW system. From May to September of 2008 the flow was changed to a continuous inflow, and resulted in a hydraulic loading rate of 3.9 cm/day. A nominal retention time of ~5 days for each CW system was calculated. Weekly monitoring was carried out for five-day biochemical oxygen demand (BOD5), total suspended solids (TSS), ammonium (NH4+), dissolved reactive phosphorus (DRP), and pH. Integrated CWs and hybrid CWs were monitored for their ability to treat dairy wastewater. The analyses focused on determining if there were important differences in pollutant treatment efficiencies between the two distinct systems. Time series temporal semivariogram analysis of the measured water parameters illustrated that different treatment efficiencies existed in the beginning of the 2008 summer (early summer) compared to the end of the 2008 summer (late summer). Furthermore, the CWs were found to have significantly different (p-value < 0.0001) treatment performances, in terms of TSS and BOD5 removal, from early to late summer 2008. Integrated CWs remove significantly more DRP than hybrid CWs (p-value < 0.05). During the late summer of 2008, the integrated CWs removed significantly more ammonium (p-value < 0.05) then all other CW systems. Hybrid and integrated CWs were both efficient in removing organics, but the hybrid systems were significantly (p-value < 0.05) more efficient during the period of highest macrophyte biomass. Mechanisms of pollutant removal in these CW systems were further analyzed. Ultimate BOD laboratory experiments were used to determine the maximum amount of biologically available… Advisors/Committee Members: Rizzo, Donna.

Subjects/Keywords: Constructed Wetlands; Dairy Wastewater

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APA (6^th Edition):

Lee, M. (2009). Pilot-Scale Constructed Wetlands Combined with Phosphorus Removing Slag Filters for Treating Dairy Wastewater. (Thesis). University of Vermont. Retrieved from https://scholarworks.uvm.edu/graddis/135

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Lee, Martin. “Pilot-Scale Constructed Wetlands Combined with Phosphorus Removing Slag Filters for Treating Dairy Wastewater.” 2009. Thesis, University of Vermont. Accessed October 20, 2019. https://scholarworks.uvm.edu/graddis/135.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Lee, Martin. “Pilot-Scale Constructed Wetlands Combined with Phosphorus Removing Slag Filters for Treating Dairy Wastewater.” 2009. Web. 20 Oct 2019.

Vancouver:

Lee M. Pilot-Scale Constructed Wetlands Combined with Phosphorus Removing Slag Filters for Treating Dairy Wastewater. [Internet] [Thesis]. University of Vermont; 2009. [cited 2019 Oct 20]. Available from: https://scholarworks.uvm.edu/graddis/135.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Lee M. Pilot-Scale Constructed Wetlands Combined with Phosphorus Removing Slag Filters for Treating Dairy Wastewater. [Thesis]. University of Vermont; 2009. Available from: https://scholarworks.uvm.edu/graddis/135

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Vermont

4. Twohig, Eamon. Evaluating Methane Emissions from Dairy Treatment Materials in a Cold Climate.

Degree: MS, Plant and Soil Science, 2012, University of Vermont

URL: https://scholarworks.uvm.edu/graddis/231

► Treating elevated nutrients, suspended solids, oxygen demanding materials, heavy metals and chemical fertilizers and pesticides in agricultural wastewaters is necessary to protect surface and ground… (more)

▼ Treating elevated nutrients, suspended solids, oxygen demanding materials, heavy metals and chemical fertilizers and pesticides in agricultural wastewaters is necessary to protect surface and ground waters. Constructed wetlands (CWs) are an increasingly important technology to remediate wastewaters and reduce negative impacts on water quality in agricultural settings. Treatment of high strength effluents typical of agricultural operations results in the production of methane (CH4), a potent greenhouse trace gas. The objective of this study was to evaluate CH4 emissions from two subsurface flow (SSF) CWs (223 m2 each) treating dairy wastewater. The CWs were implemented at the University of Vermont Paul Miller Dairy Farm in 2003 as an alternative nutrient management approach for treating mixed dairy farm effluent (barnyard runoff and milk parlor waste) in a cold, northern climate. In 2006, static collars were installed throughout the inlet, mid and outlet zones of two CWs (aerated (CW1) and a non-aerated (CW2)) connected in-series, and gas samples were collected via non-steady state chambers (19.75 L) over a nine-month period (Feb-Oct 2007). Methane flux densities were variable throughout the nine-month study period, ranging from 0.026 to 339 and 0.008 to 165 mg m-2 h-1 in CW1 and CW2, respectively. The average daily CH4 flux of CW1 and CW2 were 1475 and 552 mg m-2 d-1, respectively. Average CH4 flux of CW1 was nearly threefold greater than that of CW2 (p = .0387) across all three seasons. The in-series design may have confounded differences in CH4 flux between CWs by limiting differences in dissolved oxygen and by accentuating differences in carbon loading. Methane flux densities revealed strong spatial and seasonal variation within CWs. Emissions generally decreased from inlet to outlet in both CWs. Average CW1 CH4 flux of the inlet zone was nearly threefold greater than mid zone and over tenfold greater than flux at the outlet, while fluxes for CW2 zones were not statistically different. Methane flux of CW1 was nearly fifteen fold greater than CW2 during the fall, representing the only season during which flux was statistically different (p = .0082) between CWs. Fluxes differed significantly between seasons for both CW1 (p = .0034) and CW2 (p = .0002). CH4 emissions were greatest during the spring season in both CWs, attributed to a consistently high water table observed during this season. Vegetation was excluded from chambers during GHG monitoring, and considering that the presence of vascular plants is an important factor influencing CH4 flux, the potential CH4 emissions reported in our study could be greatly underestimated. However, our reported average CH4 fluxes are comparable to published data from SSF dairy treatment CWs. We estimate average and maximum daily emissions from the entire CW system (892 m2) at approximately 1.11 and 6.33 kg CH4 d-1, respectively, yielding an annual average and maximum flux of 8.51 and 48.5 MtCO2-e y-1, respectively. Advisors/Committee Members: Drizo, Aleksandra.

Subjects/Keywords: Methane; Constructed wetlands; agricultural wastewater

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APA (6^th Edition):

Twohig, E. (2012). Evaluating Methane Emissions from Dairy Treatment Materials in a Cold Climate. (Thesis). University of Vermont. Retrieved from https://scholarworks.uvm.edu/graddis/231

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Twohig, Eamon. “Evaluating Methane Emissions from Dairy Treatment Materials in a Cold Climate.” 2012. Thesis, University of Vermont. Accessed October 20, 2019. https://scholarworks.uvm.edu/graddis/231.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Twohig, Eamon. “Evaluating Methane Emissions from Dairy Treatment Materials in a Cold Climate.” 2012. Web. 20 Oct 2019.

Vancouver:

Twohig E. Evaluating Methane Emissions from Dairy Treatment Materials in a Cold Climate. [Internet] [Thesis]. University of Vermont; 2012. [cited 2019 Oct 20]. Available from: https://scholarworks.uvm.edu/graddis/231.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Twohig E. Evaluating Methane Emissions from Dairy Treatment Materials in a Cold Climate. [Thesis]. University of Vermont; 2012. Available from: https://scholarworks.uvm.edu/graddis/231

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

NSYSU

5. Wu, Pei-shuan. Removal of nutrients from lake water by intergral vertical flow and subsurface flow constructed wetlands.

Degree: Master, Marine Environment and Engineering, 2008, NSYSU

URL: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0729108-180301

► Constructed wetlands (CWs) utilize the natural mechanisms in wetlands to remove pollutants by physical, chemical and biological processes. CWs are one of the ecological engineering… (more)

Subjects/Keywords: constructed wetlands; Cannaceae; nutrient removal

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APA (6^th Edition):

Wu, P. (2008). Removal of nutrients from lake water by intergral vertical flow and subsurface flow constructed wetlands. (Thesis). NSYSU. Retrieved from http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0729108-180301

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Wu, Pei-shuan. “Removal of nutrients from lake water by intergral vertical flow and subsurface flow constructed wetlands.” 2008. Thesis, NSYSU. Accessed October 20, 2019. http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0729108-180301.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Wu, Pei-shuan. “Removal of nutrients from lake water by intergral vertical flow and subsurface flow constructed wetlands.” 2008. Web. 20 Oct 2019.

Vancouver:

Wu P. Removal of nutrients from lake water by intergral vertical flow and subsurface flow constructed wetlands. [Internet] [Thesis]. NSYSU; 2008. [cited 2019 Oct 20]. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0729108-180301.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Wu P. Removal of nutrients from lake water by intergral vertical flow and subsurface flow constructed wetlands. [Thesis]. NSYSU; 2008. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0729108-180301

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Oregon State University

6. Gregory, Christopher T. (Christopher Thomas). Temperature and infiltration characterization of a constructed wetland for wastewater treatment.

Degree: MS, Water Resources Engineering, 2010, Oregon State University

URL: http://hdl.handle.net/1957/13780

► The City of Woodburn, Oregon's Wastewater Treatment Plant (WWTP) has been investigating several natural alternatives for improving effluent quality. Based on its current National Pollution… (more)

▼ The City of Woodburn, Oregon's Wastewater Treatment Plant (WWTP) has been investigating several natural alternatives for improving effluent quality. Based on its current National Pollution Discharge Elimination System (NPDES) permit, the WWTP will require additional reduction of temperature and ammonia levels in the summer, especially in the critical month of September. The present research focuses on the performance of a 0.15 ha constructed pilot wetland during the summer and early fall of 2009. The wetland was intended to demonstrate the feasibility of using treatment wetlands to lower temperature and ammonia during an annual operational period (approximately June through October). Point sensors and a fiber optic distributed temperature sensor (DTS) were used to assess temperature treatment during the study. Infiltration was monitored to characterize the hydrogeologic behavior of the site. A wetland water budget was used to determine system-wide infiltration, and heat pulses applied to a subsurface fiber optic cable were used to assess infiltrative variability. The results showed that temperature reduction in the pilot wetland was marginal over the study period. In the September critical month, significantly more treatment occurred in the WWTP storage lagoon than in the wetland (about 4°C cooling compared to 1.2°C in the wetland). Decreasing the hydraulic retention time from 2.5 to 0.5 days in mid-September did not change the average temperature treatment. DTS data demonstrated that all temperature reduction occurred in the first half of the wetland. Infiltration was greater than outflow for most of the study, and steadily decreased through time. The highest and lowest infiltration velocities were within a factor of 2, and this range also declined between November 2008 and June 2009. Potential explanations for decreasing infiltration include soil clogging and settling. The study showed the utility of DTS for assessing the spatial and temporal variability of infiltration processes. Advisors/Committee Members: Selker, John S (advisor), Bolte, John P (committee member).

Subjects/Keywords: DTS; Constructed wetlands – Oregon – Woodburn

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APA (6^th Edition):

Gregory, C. T. (. T. (2010). Temperature and infiltration characterization of a constructed wetland for wastewater treatment. (Masters Thesis). Oregon State University. Retrieved from http://hdl.handle.net/1957/13780

Chicago Manual of Style (16^th Edition):

Gregory, Christopher T (Christopher Thomas). “Temperature and infiltration characterization of a constructed wetland for wastewater treatment.” 2010. Masters Thesis, Oregon State University. Accessed October 20, 2019. http://hdl.handle.net/1957/13780.

MLA Handbook (7^th Edition):

Gregory, Christopher T (Christopher Thomas). “Temperature and infiltration characterization of a constructed wetland for wastewater treatment.” 2010. Web. 20 Oct 2019.

Vancouver:

Gregory CT(T. Temperature and infiltration characterization of a constructed wetland for wastewater treatment. [Internet] [Masters thesis]. Oregon State University; 2010. [cited 2019 Oct 20]. Available from: http://hdl.handle.net/1957/13780.

Council of Science Editors:

Gregory CT(T. Temperature and infiltration characterization of a constructed wetland for wastewater treatment. [Masters Thesis]. Oregon State University; 2010. Available from: http://hdl.handle.net/1957/13780

Humboldt State University

7. Ly, Jong Chan. Ultraviolet disinfection system for constructed wetlands.

Degree: MS, Environmental Systems: Environmental Resources Engineering, 2008, Humboldt State University

URL: http://hdl.handle.net/2148/455

► Disinfection processes in wastewater treatment systems have been playing a vital role in protecting water resources from pathogenic microorganisms for decades. Currently the leading disinfection… (more)

▼ Disinfection processes in wastewater treatment systems have been playing a vital role in protecting water resources from pathogenic microorganisms for decades. Currently the leading disinfection process is chlorination, which has contributed significantly to public health protection. However, ultraviolet (UV) disinfection systems have been recently adopted for wastewater treatment due to advantages over chlorination such as not creating Trihalomethanes (THMs), no odor, no danger of overdosing, not creating volatile organic compounds (VOC), and very little contact time. Although UV disinfection has been widely applied to conventional wastewater treatment, it is not common for constructed wetland wastewater treatment due to concerns of high effluent turbidity. This research was conducted to estimate the potential for UV disinfection technology in constructed wetland wastewater treatment. The Arcata Wastewater Treatment Plant (AWTP) was selected for this study because it is a wetland treatment system widely recognized for stable conditions and high quality effluent. The majority of samples were collected from the Pilot Marsh and samples from other treatment marshes were utilized for additional tests. During the research period, no fecal coliform was found after UV disinfection. This study also investigated possible concerns associated with UV disinfection: the effect of high UV dosage on algae population, the interfering substances of UV transmittance, physical characterization of particles in the effluent of the marshes, and the potential for fecal coliform re-growth. This research found that algae death by UV light does not significantly contribute to effluent BOD. Also, the UV interfering substances (lignite and silt) in the Pilot Marsh do not influence the effectiveness of UV disinfection. Less than 1% of the suspended particles in the wastewater had diameters exceeding 50 m which UV can not penetrate, and over 90% of particles are smaller than 10m. In addition, UV disinfected samples showed no re-growing fecal coliform bacteria by photoreactivation or dark repair. Results of this research demonstrate that UV disinfection would be a highly viable option for AWTP. Further research is needed to estimate the applicable range of UV disinfection in different locations and environments. Advisors/Committee Members: Finney, Brad A..

Subjects/Keywords: UV; Disinfection; Constructed wetlands

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APA (6^th Edition):

Ly, J. C. (2008). Ultraviolet disinfection system for constructed wetlands. (Masters Thesis). Humboldt State University. Retrieved from http://hdl.handle.net/2148/455

Chicago Manual of Style (16^th Edition):

Ly, Jong Chan. “Ultraviolet disinfection system for constructed wetlands.” 2008. Masters Thesis, Humboldt State University. Accessed October 20, 2019. http://hdl.handle.net/2148/455.

MLA Handbook (7^th Edition):

Ly, Jong Chan. “Ultraviolet disinfection system for constructed wetlands.” 2008. Web. 20 Oct 2019.

Vancouver:

Ly JC. Ultraviolet disinfection system for constructed wetlands. [Internet] [Masters thesis]. Humboldt State University; 2008. [cited 2019 Oct 20]. Available from: http://hdl.handle.net/2148/455.

Council of Science Editors:

Ly JC. Ultraviolet disinfection system for constructed wetlands. [Masters Thesis]. Humboldt State University; 2008. Available from: http://hdl.handle.net/2148/455

Montana State University

8. Moss, Jefferson Jack, IV. Operation and optimization of a two-stage, vertical flow constructed wetland system at Bridger Bowl Ski Area.

Degree: College of Engineering, 2016, Montana State University

URL: https://scholarworks.montana.edu/xmlui/handle/1/13802

► Treatment wetlands are an internationally accepted technology for treatment of domestic wastewater and modern designs have become the preferred option for small communities in several… (more)

Subjects/Keywords: Constructed wetlands.; Research.; Carbon.; Nitrogen.

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APA (6^th Edition):

Moss, Jefferson Jack, I. (2016). Operation and optimization of a two-stage, vertical flow constructed wetland system at Bridger Bowl Ski Area. (Thesis). Montana State University. Retrieved from https://scholarworks.montana.edu/xmlui/handle/1/13802

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Moss, Jefferson Jack, IV. “Operation and optimization of a two-stage, vertical flow constructed wetland system at Bridger Bowl Ski Area.” 2016. Thesis, Montana State University. Accessed October 20, 2019. https://scholarworks.montana.edu/xmlui/handle/1/13802.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Moss, Jefferson Jack, IV. “Operation and optimization of a two-stage, vertical flow constructed wetland system at Bridger Bowl Ski Area.” 2016. Web. 20 Oct 2019.

Vancouver:

Moss, Jefferson Jack I. Operation and optimization of a two-stage, vertical flow constructed wetland system at Bridger Bowl Ski Area. [Internet] [Thesis]. Montana State University; 2016. [cited 2019 Oct 20]. Available from: https://scholarworks.montana.edu/xmlui/handle/1/13802.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Moss, Jefferson Jack I. Operation and optimization of a two-stage, vertical flow constructed wetland system at Bridger Bowl Ski Area. [Thesis]. Montana State University; 2016. Available from: https://scholarworks.montana.edu/xmlui/handle/1/13802

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Oregon State University

9. Niswander, Steven Francis. Treatment of dairy wastewater in a constructed wetland system : evapotranspiration, hydrology, hydraulics, treatment performance, and nitrogen cycling processes.

Degree: PhD, Bioresource Engineering, 1997, Oregon State University

URL: http://hdl.handle.net/1957/34503

► Five unique but related studies were conducted at the Oregon State University Dairy Wetland Treatment System (OSUDWTS), Corvallis, OR. The research site consisted of six… (more)

▼ Five unique but related studies were conducted at the Oregon State University Dairy Wetland Treatment System (OSUDWTS), Corvallis, OR. The research site consisted of six parallel wetland cells, which were built in 1992 and began receiving concentrated dairy wastewater in the fall of 1993. Hydrologic, hydraulic, and water quality data were collected at the site for three years. The five resulting studies were: 1. the prediction of evapotranspiration (ET) from wetlands; 2. the development of a hydrologic model and water budget for the OSUDWTS; 3. a preliminary investigation of the hydraulics of the OSUDWTS; 4. an overall evaluation of the treatment performance of the OSUDWTS and applicability of current constructed wetland design methods to livestock wastewater wetlands; and 5. the development of a conceptual model for nitrogen removal in constructed wetlands. Average ET rates for the wetland cells were found to be 1.6 times as great as the Penman- Monteith alfalfa reference ET. Specific crop coefficients were 1.72, 2.32, and 0.57 for bulrush, cattails, and floating grass mats. The detailed hydrology model predicted daily water levels very accurately (R²=0.95) and showed seasonal rainfall and ET could increase or decrease the average detention time by as much as 18%. Tracer studies indicated that non ideal flow existed in the wetlands. Actual detention times were found to be an average of 43% shorter than theoretical detention times. Tank-in-series and plug flow modified by dispersion models were inadequate at describing the observed tracer response. Constructed wetlands were shown to be able to reduce a high percentage of most waste constituents in concentrated livestock wastewaters. Average reductions for COD, BOD, TS, TSS, TP, TKN, NH₃ and fecal coliforms were 45, 52, 27, 55, 42, 41, 37 and 80%, respectively. Rate constants for volumetric and areal first-order plug flow models were found for each wastewater constituent. Overall, both models were fair at predicting wastewater reduction at the OSUDWTS. A conceptual model of nitrogen cycling showed denitrification to be the most important process for nitrogen removal in constructed wetlands. However, low dissolved oxygen in constructed wetlands limits nitrification, which in turn limits denitrification. Advisors/Committee Members: Moore, James A. (advisor), English, Marshall (committee member).

Subjects/Keywords: Constructed wetlands

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APA (6^th Edition):

Niswander, S. F. (1997). Treatment of dairy wastewater in a constructed wetland system : evapotranspiration, hydrology, hydraulics, treatment performance, and nitrogen cycling processes. (Doctoral Dissertation). Oregon State University. Retrieved from http://hdl.handle.net/1957/34503

Chicago Manual of Style (16^th Edition):

Niswander, Steven Francis. “Treatment of dairy wastewater in a constructed wetland system : evapotranspiration, hydrology, hydraulics, treatment performance, and nitrogen cycling processes.” 1997. Doctoral Dissertation, Oregon State University. Accessed October 20, 2019. http://hdl.handle.net/1957/34503.

MLA Handbook (7^th Edition):

Niswander, Steven Francis. “Treatment of dairy wastewater in a constructed wetland system : evapotranspiration, hydrology, hydraulics, treatment performance, and nitrogen cycling processes.” 1997. Web. 20 Oct 2019.

Vancouver:

Niswander SF. Treatment of dairy wastewater in a constructed wetland system : evapotranspiration, hydrology, hydraulics, treatment performance, and nitrogen cycling processes. [Internet] [Doctoral dissertation]. Oregon State University; 1997. [cited 2019 Oct 20]. Available from: http://hdl.handle.net/1957/34503.

Council of Science Editors:

Niswander SF. Treatment of dairy wastewater in a constructed wetland system : evapotranspiration, hydrology, hydraulics, treatment performance, and nitrogen cycling processes. [Doctoral Dissertation]. Oregon State University; 1997. Available from: http://hdl.handle.net/1957/34503

University of KwaZulu-Natal

10. Naidoo, Nivarya. The ecological and functional assessment of wetlands : case study of a constructed wetland, Dundee, KwaZulu-Natal.

Degree: 2018, University of KwaZulu-Natal

URL: https://researchspace.ukzn.ac.za/handle/10413/16398

► This dissertation focused on the constructed wetland at a disused coal mine in Dundee, KwaZulu-Natal. A sequence of 10 wetland cells was constructed by the… (more)

▼ This dissertation focused on the constructed wetland at a disused coal mine in Dundee, KwaZulu-Natal. A sequence of 10 wetland cells was constructed by the Department of Water and Sanitation (DWS) to remediate seepage from the mine. The main aspects that this dissertation is focused on are the water quality and geochemistry of the wetland; the ability of the wetland in providing ecological goods and services, and the rehabilitation of the wetland system. The results of the water quality analysis revealed that the water in the system is of inferior quality. Several of the parameters exceeded South African water quality standards indicating that the water is detrimental to aquatic health and neither is it suitable for human consumption. The geochemical analysis revealed that whilst heavy metals are present in the sediments the enrichment factor (EF) values are low although certain elements may be bioavailable. This possibility is enhanced by the predominance of larger grained sediment which have low adsorption capacities, allowing for relatively easy remobilisation into the water column. PCA analysis indicated a predominance of some heavy metals in the wetland cells but that this was influenced by anthropogenic impacts via discard coal. The ability of the wetland system in providing ecosystem goods and services was found to be compromised due to the wetland being in a state of malfunction. The final part of this dissertation comprises of a proposed rehabilitation plan for the constructed wetland. The rehabilitation plan focuses on the causes of degradation of the system due to the prolonged lack of maintenance and monitoring resulting in dysfunctional connectivity of wetland cells; inhibition of wetland conditions; the proliferation of terrestrial and alien invasive plants and, the inappropriate original structural composition of the basal sediments used which initially would have worked counter to the original intention to reduce acidity of mine derived groundwater. The rehabilitation plan is intended to aid in the re-establishment of hydrological, geomorphological and ecological processes in the wetland system. Advisors/Committee Members: Pillay, Srinivasan Seeni. (advisor), Naidoo, Kubendran Kista. (advisor).

Subjects/Keywords: Wetlands.; Constructed wetlands.; Water quality.; Geochemistry.

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APA (6^th Edition):

Naidoo, N. (2018). The ecological and functional assessment of wetlands : case study of a constructed wetland, Dundee, KwaZulu-Natal. (Thesis). University of KwaZulu-Natal. Retrieved from https://researchspace.ukzn.ac.za/handle/10413/16398

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Naidoo, Nivarya. “The ecological and functional assessment of wetlands : case study of a constructed wetland, Dundee, KwaZulu-Natal.” 2018. Thesis, University of KwaZulu-Natal. Accessed October 20, 2019. https://researchspace.ukzn.ac.za/handle/10413/16398.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Naidoo, Nivarya. “The ecological and functional assessment of wetlands : case study of a constructed wetland, Dundee, KwaZulu-Natal.” 2018. Web. 20 Oct 2019.

Vancouver:

Naidoo N. The ecological and functional assessment of wetlands : case study of a constructed wetland, Dundee, KwaZulu-Natal. [Internet] [Thesis]. University of KwaZulu-Natal; 2018. [cited 2019 Oct 20]. Available from: https://researchspace.ukzn.ac.za/handle/10413/16398.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Naidoo N. The ecological and functional assessment of wetlands : case study of a constructed wetland, Dundee, KwaZulu-Natal. [Thesis]. University of KwaZulu-Natal; 2018. Available from: https://researchspace.ukzn.ac.za/handle/10413/16398

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Kansas

11. Lee, Hyunjung. Nutrient Removal in Constructed Wetlands Treating Agricultural Tile Drainage.

Degree: MS, Civil, Environmental & Architectural Engineering, 2016, University of Kansas

URL: http://hdl.handle.net/1808/22351

► Agricultural runoff can carry substantial loadings of nitrogen and phosphorus that can impact local surface water quality and contribute to impairment of water bodies further… (more)

▼ Agricultural runoff can carry substantial loadings of nitrogen and phosphorus that can impact local surface water quality and contribute to impairment of water bodies further downstream. Subsurface tile drainage, a drainage water management practice commonly used in the Midwest, is known to contribute to elevated levels of these contaminants. Strategies to improve drainage water quality must be implemented in a way that minimally impacts land utilization and crop yield. In this study, three constructed wetlands were utilized to treat runoff from tile outlet terrace (TOT) agricultural fields managed under either a no-till corn-soybean rotation with wheat prior to soybean, or a no-till soybean crop. Nutrient and sediment removal efficiencies and runoff impact on receiving streams were determined during two growing seasons in 2014 and 2015. Water samples were collected with an auto-sampler at the wetland influent and effluent locations at Harvest Hills North (HHN/site 1), Harvest Hills Middle (HHM/site2), and Dan Cain site (Cain/site3). Using stream bottles, samples were also collected from two local streams that receive TOT runoff during and after storm events. Over the two years, changes in nutrient and sediment loads to the wetlands were observed. Runoff quality was affected by changes in crop type, fertilizer application rate, and precipitation pattern, frequency and intensity. During the two growing seasons, TOT runoff was responsible for 99.5, 71.2 and 197.7 kg of TN entering the wetlands at sites 1, 2 and 3, respectively, of which 67.7, 59.3 and 93.8 kg exited the system in the wetland effluent (32, 17 and 53% load removal). For TP, approximately 16.54, 8.75 and 45.18 kg entered the wetlands, of which 10.24, 5.25 and 19.67 kg exited (38, 40 and 56% removal). For total suspended solids (TSS), roughly 14793, 4023 and 64624 kg entered, of which 4824, 1748 and 10876 kg exited (67, 57 and 83% removal). Compared to the year with soybean crop coverage (2014) at the sites with a no-till corn-soybean rotation (sites 1 and 2), higher sediment concentration in TOT runoff was observed at the site with a no-till soybean crop both years (site3). The wetlands’ performance was typically better with higher influent concentrations, although the wetland design and inflow volume also seemed to contribute as well. Variations in behavior between two similar wetlands (sites 1 and 2) were likely due to differences in seepage rates and flow distribution through the wetlands, which is believed to have changed as sediments built up near the influent discharge pipe at site 1. Stream monitoring results showed that median concentrations of TN and TP were higher than the benchmark values for streams in U.S. EPA Region 7, with no measureable impact from either the treated (wetland effluent) or the untreated runoff. Potential reasons for why no significant impact to stream quality was observed are the relatively low volume of discharge relative to stream flow, and the relatively high stream levels of nutrients and sediments even upstream of the… Advisors/Committee Members: Peltier, Edward F (advisor), Young, C Bryan (cmtemember), Carter Jr., Ray E (cmtemember).

Subjects/Keywords: Environmental engineering; constructed wetlands; nutrient removal; treatment wetlands; wetlands

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APA (6^th Edition):

Lee, H. (2016). Nutrient Removal in Constructed Wetlands Treating Agricultural Tile Drainage. (Masters Thesis). University of Kansas. Retrieved from http://hdl.handle.net/1808/22351

Chicago Manual of Style (16^th Edition):

Lee, Hyunjung. “Nutrient Removal in Constructed Wetlands Treating Agricultural Tile Drainage.” 2016. Masters Thesis, University of Kansas. Accessed October 20, 2019. http://hdl.handle.net/1808/22351.

MLA Handbook (7^th Edition):

Lee, Hyunjung. “Nutrient Removal in Constructed Wetlands Treating Agricultural Tile Drainage.” 2016. Web. 20 Oct 2019.

Vancouver:

Lee H. Nutrient Removal in Constructed Wetlands Treating Agricultural Tile Drainage. [Internet] [Masters thesis]. University of Kansas; 2016. [cited 2019 Oct 20]. Available from: http://hdl.handle.net/1808/22351.

Council of Science Editors:

Lee H. Nutrient Removal in Constructed Wetlands Treating Agricultural Tile Drainage. [Masters Thesis]. University of Kansas; 2016. Available from: http://hdl.handle.net/1808/22351

Texas A&M University

12. Bustamante, Jorge Bernardo. Evaluation and Performance of a Constructed Wetland for Stormwater Management.

Degree: MS, Biological and Agricultural Engineering, 2016, Texas A&M University

URL: http://hdl.handle.net/1969.1/158916

► The Dickinson Bayou Watershed has several water bodies impaired by high fecal coliform counts and low oxygen levels. Total Maximum Daily Loads (TMDL) were developed… (more)

▼ The Dickinson Bayou Watershed has several water bodies impaired by high fecal coliform counts and low oxygen levels. Total Maximum Daily Loads (TMDL) were developed to estimate the maximum amounts of Escherichia coli (E. coli) the tributaries to Dickinson Bayou could receive and still meet water quality standards. As part of the Dickinson Bayou Watershed Protection Plan, the Clear Creek Independent School District (CCISD) in League City, Texas, together with the Texas Coastal Watershed Program (TCWP-part of TAMU) office, retrofitted a detention pond in the their Education Village into a constructed wetland. This research seeks to evaluate the retrofitted constructed wetland effectiveness in reducing effluent loads of E. coli and how it compares to the potential load reduction estimated in the Total Maximum Daily Load (TMDL). Inflow into the wetland was quantified using the SCS Curve Number method and outflow was quantified using the stage-storage curve based on the change of the water level in the wetland. Inflow and outflow water samples were collected using ISCO samplers and tested with 3M^TM E. coli/ Coliform Petrifilm^TM. E. coli concentrations were analyzed following the methods outlined by the International BMP Database and using the XLSTAT software. The statistical analysis included descriptive statistics and parametric and non-parametric hypothetical testing. The results showed a median E. coli inflow concentration of 5,987 CFU/100ml and a median outflow concentration of 1,500 CFU/100ml. The normalized E. coli load was calculated to be 2.0 x 10¹⁰ CFU/acrexyr. A comparison to similar BMPs using lognormal probability plots showed the Education village compared favorably at high inflow concentrations, but had a higher minimum achievable concentration. The analysis of BMP performance data is often complex and challenging. Due to the limitations of this study there are a many avenues of further research. First, the influent E. coli concentrations were significantly higher than comparable watersheds. Considering the Education Village watershed only contains institutional facilities, high E. coli concentrations were not expected. Another possible investigation could involve taking a more detailed hydrograph and pollutograph. Moreover, more studies at other BMPs are needed for a better comparison of treatment performance, especially at detention basins. Finally, while this research highlights the possibility of a loading reduction that is lower than the WPP estimate, more research is needed to confirm that estimate. Advisors/Committee Members: Munster, Clyde L (advisor), Jacob, John S (committee member), Jaber, Fouad H (committee member).

Subjects/Keywords: constructed wetlands; stormwater BMP; E. Coli

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APA (6^th Edition):

Bustamante, J. B. (2016). Evaluation and Performance of a Constructed Wetland for Stormwater Management. (Masters Thesis). Texas A&M University. Retrieved from http://hdl.handle.net/1969.1/158916

Chicago Manual of Style (16^th Edition):

Bustamante, Jorge Bernardo. “Evaluation and Performance of a Constructed Wetland for Stormwater Management.” 2016. Masters Thesis, Texas A&M University. Accessed October 20, 2019. http://hdl.handle.net/1969.1/158916.

MLA Handbook (7^th Edition):

Bustamante, Jorge Bernardo. “Evaluation and Performance of a Constructed Wetland for Stormwater Management.” 2016. Web. 20 Oct 2019.

Vancouver:

Bustamante JB. Evaluation and Performance of a Constructed Wetland for Stormwater Management. [Internet] [Masters thesis]. Texas A&M University; 2016. [cited 2019 Oct 20]. Available from: http://hdl.handle.net/1969.1/158916.

Council of Science Editors:

Bustamante JB. Evaluation and Performance of a Constructed Wetland for Stormwater Management. [Masters Thesis]. Texas A&M University; 2016. Available from: http://hdl.handle.net/1969.1/158916

Humboldt State University

13. Simpson, Nicholas P. The potential impact on mosquito larvae by threespine stickleback (Gasterosteus aculeatus) and mosquitofish (Gambusia affinis) in four constructed wetlands.

Degree: MS, Fisheries: Wastewater Utilization, 2008, Humboldt State University

URL: http://hdl.handle.net/2148/424

► Mosquitofish (Gambusia affinis Baird and Girard) and threespine stickleback (Gasterosteus aculeatus) thrive in freshwater marsh habitats, in places where mosquito (Culicidae) larvae occur. This study… (more)

▼ Mosquitofish (Gambusia affinis Baird and Girard) and threespine stickleback (Gasterosteus aculeatus) thrive in freshwater marsh habitats, in places where mosquito (Culicidae) larvae occur. This study assessed the potential impacts of mosquitofish (Gambusia affinis) and threespine stickleback (Gasterosteus aculeatus) on mosquito and other macroinvertebrate communities living in constructed wetland Hydrocotyle beds. Littoral macrofauna was collected at 48 sites within Allen, Gearheart, Hauser, and Aldergrove marshes in Arcata, California. Sites were sampled every two weeks from May through September of 2005 for fish and available prey by utilizing minnow traps and a 1 liter dipper. Stomach samples of juvenile and adult threespine stickleback and mosquitofish were compared with abundance and seasonal changes of potential prey to determine monthly diet preferences. Niche overlap value (Cxy (0.33)) demonstrated that little overlap was occurring in diet between both species. In addition, both species were utilizing potential prey items in proportion to their abundance. As mosquito larvae and other prey densities increased, both stickleback and mosquitofish diversified their prey selection to include a variety of prey. However, during this diversification in prey selection, mosquitofish exhibited a Type III feeding response to mosquito larvae, while stickleback showed no clear response to the increase of mosquitoes. This difference in feeding response is likely due to concentration of predator search in the preferred habitat of the prey, palatability, prey vulnerability, and response to other prey items. The lack of predation on mosquito larvae, coupled with periodic consumption of mosquito larvae predators such as Dytiscidae, show stickleback would be inadequate as a biological control agent of mosquitoes in constructed wetlands. Mosquitofish significantly consumed mosquito larvae more than any other prey (p < 0.05), and consumed significantly greater numbers of mosquito larvae than stickleback when stomach samples from all marshes were examined. The positively correlated mosquitofish feeding response to increased numbers of mosquito larvae, especially in Allen Marsh, makes this fish a good choice for biological control of mosquitoes in heavily vegetated wetlands. Advisors/Committee Members: Brenneman, Kristine.

Subjects/Keywords: Mosquito control; Constructed wetlands; Mosquitofish; Stickleback

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APA (6^th Edition):

Simpson, N. P. (2008). The potential impact on mosquito larvae by threespine stickleback (Gasterosteus aculeatus) and mosquitofish (Gambusia affinis) in four constructed wetlands. (Masters Thesis). Humboldt State University. Retrieved from http://hdl.handle.net/2148/424

Chicago Manual of Style (16^th Edition):

Simpson, Nicholas P. “The potential impact on mosquito larvae by threespine stickleback (Gasterosteus aculeatus) and mosquitofish (Gambusia affinis) in four constructed wetlands.” 2008. Masters Thesis, Humboldt State University. Accessed October 20, 2019. http://hdl.handle.net/2148/424.

MLA Handbook (7^th Edition):

Simpson, Nicholas P. “The potential impact on mosquito larvae by threespine stickleback (Gasterosteus aculeatus) and mosquitofish (Gambusia affinis) in four constructed wetlands.” 2008. Web. 20 Oct 2019.

Vancouver:

Simpson NP. The potential impact on mosquito larvae by threespine stickleback (Gasterosteus aculeatus) and mosquitofish (Gambusia affinis) in four constructed wetlands. [Internet] [Masters thesis]. Humboldt State University; 2008. [cited 2019 Oct 20]. Available from: http://hdl.handle.net/2148/424.

Council of Science Editors:

Simpson NP. The potential impact on mosquito larvae by threespine stickleback (Gasterosteus aculeatus) and mosquitofish (Gambusia affinis) in four constructed wetlands. [Masters Thesis]. Humboldt State University; 2008. Available from: http://hdl.handle.net/2148/424

Humboldt State University

14. Jones, Cory M. The effects of selected antibiotics on nitrogen uptake by Spirodela punctata.

Degree: MS, Natural Resources: Wastewater Utilization Program, 2010, Humboldt State University

URL: http://hdl.handle.net/2148/570

► The purpose of this study was to determine the effects of nitrogenous compound removal by the aquatic macrophyte, Spirodela punctata, when exposed to three selected… (more)

▼ The purpose of this study was to determine the effects of nitrogenous compound removal by the aquatic macrophyte, Spirodela punctata, when exposed to three selected antibiotics. Recent research has shown that certain antibiotics target the chloroplasts of aquatic species such as Lemna and Myriophyllum. Studies have demonstrated antibiotic toxicity to Lemna gibba at concentrations as low as 10 ??g/L. Meanwhile, antibiotic concentrations in domestic wastewater lie in the nanogram to microgram range with an average of approximately 50 ??g/L. In this study, Spirodela punctata was grown in a mineral salts medium containing the antibiotics chlortetracycline, lomefloxacin, and sulfamethoxazole in concentrations ranging from 10 ??g/L to 300 ??g/L. Fronds were allowed to grow in the medium for seven, fourteen, and twenty-one day periods. Following the growth periods, the medium was analyzed for nitrate and total nitrogen concentrations. Dry weights of fronds were taken and the dried plant material was analyzed for Total Kjeldahl Nitrogen (TKN) content. Effective concentrations (EC25 and EC50) that impacted total nitrogen and nitrate removal from the growth medium as well as dry weights and Total Kjeldahl Nitrogen of the plant tissue were calculated. Of the antibiotics tested, chlortetracycline had the most significant responses. The antibiotic reduced nitrate and total nitrogen removal from the medium and decreased plant biomass. For nitrate removal chlortetracycline had an EC25 of 32 ??g/L after three weeks of exposure. Dry weight EC25 for chlortetracycline was 73 ??g/L after seven days of exposure to the antibiotic. Control treatments containing the antibiotic and no plant material had similar results indicating that the compounds added nitrogen. Conversely, other compounds tested resulted in very few significant responses. Lomefloxacin only showed significance for nitrate removal during week two and total nitrogen for week one. Surprisingly, the antibiotic seemed to stimulate the ability of Spirodela punctata to remove total nitrogen during the first week of exposure. Sulfamethoxazole had only one significant response during the test period. The combination of the three antibiotics resulted in only a reduction in nitrate removal during the first week after which there was no significant effect. Overall, selected antibiotics had little direct effect on ability of Spirodela punctata to remove nitrogenous compounds. However, with respect to chlortetracycline, the reduction in the production of biomass resulted in the reduction in nitrate and total nitrogen removal. This reduction in biomass is perhaps the greatest impact on S. punctata???s ability to remove nitrogenous compounds from wastewater. Advisors/Committee Members: Brenneman, Kristine.

Subjects/Keywords: Wastewater; Antibiotics; Lemnaceae; Constructed wetlands; Nutrient removal

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APA (6^th Edition):

Jones, C. M. (2010). The effects of selected antibiotics on nitrogen uptake by Spirodela punctata. (Masters Thesis). Humboldt State University. Retrieved from http://hdl.handle.net/2148/570

Chicago Manual of Style (16^th Edition):

Jones, Cory M. “The effects of selected antibiotics on nitrogen uptake by Spirodela punctata.” 2010. Masters Thesis, Humboldt State University. Accessed October 20, 2019. http://hdl.handle.net/2148/570.

MLA Handbook (7^th Edition):

Jones, Cory M. “The effects of selected antibiotics on nitrogen uptake by Spirodela punctata.” 2010. Web. 20 Oct 2019.

Vancouver:

Jones CM. The effects of selected antibiotics on nitrogen uptake by Spirodela punctata. [Internet] [Masters thesis]. Humboldt State University; 2010. [cited 2019 Oct 20]. Available from: http://hdl.handle.net/2148/570.

Council of Science Editors:

Jones CM. The effects of selected antibiotics on nitrogen uptake by Spirodela punctata. [Masters Thesis]. Humboldt State University; 2010. Available from: http://hdl.handle.net/2148/570

University of Edinburgh

15. Drizo, Aleksandra. Phosphate and ammonium removal from waste water, using constructed wetland systems.

Degree: PhD, 1998, University of Edinburgh

URL: http://hdl.handle.net/1842/9991

► Phosphorus and nitrogen in waste water from sewerage systems contribute to excessive nutrient enrichment of surface waters, presenting a threat to nature conservation, domestic and… (more)

▼ Phosphorus and nitrogen in waste water from sewerage systems contribute to excessive nutrient enrichment of surface waters, presenting a threat to nature conservation, domestic and industrial water supplies, and recreation. The general objective of this research was to investigate phosphate and ammonium removal from waste water by constructed wetland systems (CWS), which are increasingly being used for low-cost water treatment. Phosphate (P) adsorption capacity and other properties of potential CWS substrate materials (bauxite, shale, burnt oil shale, limestone, zeolite, light expanded clay aggregates (LECA) and fly ash) were investigated. Fly ash and shale had the highest P adsorption values, which were significantly correlated with porosity and hydraulic conductivity. Longer - term experiments with shale and bauxite gave maximum P uptake values of 730 and 355 mg P kg- I, respectively. Phragmites australis (common reed) seedlings grew satisfactorily in shale, bauxite, LECA and fly ash. Shale was selected as the most suitable substrate, and used in a pilot-scale CWS in plastic tanks in a greenhouse, with and without P. australis, at two input nutrient concentrations and a loading rate of 0.02 m3 m-2 d-1. Both planted and unplanted systems removed 98 - I 00% of P from a synthetic sewage over ll months. Removal of ammonium N was also complete in the planted tanks, but only 40 - 75% was removed in the unplanted ones. Corresponding nitrate N removal was 85 - 95% and 45 - 75%. The systems performed as well at high as at low concentration for both phosphate and ammonium. The variations in P and N removal could not be attributed to differences in pH, Eh and temperature, which did not differ significantly between planted and unplanted tanks. During the experiment, P and N concentrations were determined at 3 depths and 4 positions along the length of the tanks. H2P04- - P and NH/ - N concentrations were low ( < I. 0 g m-3) at all locations in the planted systems, whereas the P concentrations were sometimes twice as high in the unplanted ones. NH4 + -N in the unplanted systems was relatively high (l 0 - 30 g m"3) throughout the experiment. N03 – N concentrations were very low by comparison. P. precipitation on shale and P. australis root and rhizome surfaces was examined by X-ray fluorescence analysis, and by chemical extraction with ammonium acetate, 0.1 M HCI and 2%> citric acid. This showed that P, Fe and Al had precipitated on all these surfaces. However. it was not possible to quantify the surface deposits, and further research is necessary. The hydraulic residence time. flow characteristics and permeability of the shale was investigated by a bromide tracer. The tracer breakthrough curves showed a similar pattern in all tanks, with ca 66% of the flow occurring through the bottom zone. However, the actual hydraulic residence time (6 days) was slightly higher than the theoretical one Although there was a significant difference (p < 0.02) between the distribution of flow in planted and unplanted tanks. there was no reduction…

Subjects/Keywords: 628.3; Constructed wetlands

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APA (6^th Edition):

Drizo, A. (1998). Phosphate and ammonium removal from waste water, using constructed wetland systems. (Doctoral Dissertation). University of Edinburgh. Retrieved from http://hdl.handle.net/1842/9991

Chicago Manual of Style (16^th Edition):

Drizo, Aleksandra. “Phosphate and ammonium removal from waste water, using constructed wetland systems.” 1998. Doctoral Dissertation, University of Edinburgh. Accessed October 20, 2019. http://hdl.handle.net/1842/9991.

MLA Handbook (7^th Edition):

Drizo, Aleksandra. “Phosphate and ammonium removal from waste water, using constructed wetland systems.” 1998. Web. 20 Oct 2019.

Vancouver:

Drizo A. Phosphate and ammonium removal from waste water, using constructed wetland systems. [Internet] [Doctoral dissertation]. University of Edinburgh; 1998. [cited 2019 Oct 20]. Available from: http://hdl.handle.net/1842/9991.

Council of Science Editors:

Drizo A. Phosphate and ammonium removal from waste water, using constructed wetland systems. [Doctoral Dissertation]. University of Edinburgh; 1998. Available from: http://hdl.handle.net/1842/9991

Montana State University

16. Faulwetter, Jennifer Lynn. Analysis of microbial biofilm community composition within constructed wetlands.

Degree: College of Letters & Science, 2010, Montana State University

URL: https://scholarworks.montana.edu/xmlui/handle/1/1243

► Constructed wetlands (CWs) are ecologically-based water treatment systems that provide cost-effective amelioration of waterborne pollutants. Fundamental understanding of removal mechanisms, especially microbial processes, limits greater… (more)

Subjects/Keywords: Constructed wetlands.; Biofilms.; Sulfate-reducing bacteria.; Nitrification.

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APA (6^th Edition):

Faulwetter, J. L. (2010). Analysis of microbial biofilm community composition within constructed wetlands. (Thesis). Montana State University. Retrieved from https://scholarworks.montana.edu/xmlui/handle/1/1243

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Faulwetter, Jennifer Lynn. “Analysis of microbial biofilm community composition within constructed wetlands.” 2010. Thesis, Montana State University. Accessed October 20, 2019. https://scholarworks.montana.edu/xmlui/handle/1/1243.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Faulwetter, Jennifer Lynn. “Analysis of microbial biofilm community composition within constructed wetlands.” 2010. Web. 20 Oct 2019.

Vancouver:

Faulwetter JL. Analysis of microbial biofilm community composition within constructed wetlands. [Internet] [Thesis]. Montana State University; 2010. [cited 2019 Oct 20]. Available from: https://scholarworks.montana.edu/xmlui/handle/1/1243.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Faulwetter JL. Analysis of microbial biofilm community composition within constructed wetlands. [Thesis]. Montana State University; 2010. Available from: https://scholarworks.montana.edu/xmlui/handle/1/1243

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Montana State University

17. Spengler, Justin Warren. Denitrification at the microscale in treatment wetlands.

Degree: College of Engineering, 2015, Montana State University

URL: https://scholarworks.montana.edu/xmlui/handle/1/12741

► Treatment wetlands (TWs) have been in use for over three decades for wastewater treatment, agricultural water treatment, and some industrial wastes. Thousands of TWs exist… (more)

Subjects/Keywords: Constructed wetlands.; Nitrogen cycle.; Sewage Purification.

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APA (6^th Edition):

Spengler, J. W. (2015). Denitrification at the microscale in treatment wetlands. (Thesis). Montana State University. Retrieved from https://scholarworks.montana.edu/xmlui/handle/1/12741

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Spengler, Justin Warren. “Denitrification at the microscale in treatment wetlands.” 2015. Thesis, Montana State University. Accessed October 20, 2019. https://scholarworks.montana.edu/xmlui/handle/1/12741.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Spengler, Justin Warren. “Denitrification at the microscale in treatment wetlands.” 2015. Web. 20 Oct 2019.

Vancouver:

Spengler JW. Denitrification at the microscale in treatment wetlands. [Internet] [Thesis]. Montana State University; 2015. [cited 2019 Oct 20]. Available from: https://scholarworks.montana.edu/xmlui/handle/1/12741.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Spengler JW. Denitrification at the microscale in treatment wetlands. [Thesis]. Montana State University; 2015. Available from: https://scholarworks.montana.edu/xmlui/handle/1/12741

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Montana State University

18. VanKempen-Fryling, Rachel Joy. Understanding Escherichia coli O157:H7 presence, pervasiveness, and persistence in constructed treatment wetland systems.

Degree: College of Letters & Science, 2015, Montana State University

URL: https://scholarworks.montana.edu/xmlui/handle/1/9086

► Treatment wetlands (TW) are a wastewater remediation technology that relies on the natural ability of wetland plant species and the associated microbial consortia to remove… (more)

Subjects/Keywords: Water Purification.; Escherichia coli.; Constructed wetlands.

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APA (6^th Edition):

VanKempen-Fryling, R. J. (2015). Understanding Escherichia coli O157:H7 presence, pervasiveness, and persistence in constructed treatment wetland systems. (Thesis). Montana State University. Retrieved from https://scholarworks.montana.edu/xmlui/handle/1/9086

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

VanKempen-Fryling, Rachel Joy. “Understanding Escherichia coli O157:H7 presence, pervasiveness, and persistence in constructed treatment wetland systems.” 2015. Thesis, Montana State University. Accessed October 20, 2019. https://scholarworks.montana.edu/xmlui/handle/1/9086.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

VanKempen-Fryling, Rachel Joy. “Understanding Escherichia coli O157:H7 presence, pervasiveness, and persistence in constructed treatment wetland systems.” 2015. Web. 20 Oct 2019.

Vancouver:

VanKempen-Fryling RJ. Understanding Escherichia coli O157:H7 presence, pervasiveness, and persistence in constructed treatment wetland systems. [Internet] [Thesis]. Montana State University; 2015. [cited 2019 Oct 20]. Available from: https://scholarworks.montana.edu/xmlui/handle/1/9086.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

VanKempen-Fryling RJ. Understanding Escherichia coli O157:H7 presence, pervasiveness, and persistence in constructed treatment wetland systems. [Thesis]. Montana State University; 2015. Available from: https://scholarworks.montana.edu/xmlui/handle/1/9086

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Oregon State University

19. Kuehn, Elaine Jinx. Effect of plant surface area on organic carbon removal in wetlands.

Degree: MS, Bioresource Engineering, 1994, Oregon State University

URL: http://hdl.handle.net/1957/35230

► This study investigated the effect of plant surface area (plant density) on the efficiency of organic carbon removal in a bench-scale constructed wetland. Constructed wetlands… (more)

▼ This study investigated the effect of plant surface area (plant density) on the efficiency of organic carbon removal in a bench-scale constructed wetland. Constructed wetlands are commonly assumed to be biofilm reactors in which organic carbon removal occurs primarily through sedimentation and aerobic degradation by attached microbial biofilms. In conventional biofilm reactors, aerobic degradation of organic carbon is proportional to the amount of surface area for microbial attachment, provided that sufficient oxygen is available. In contrast, current design equations for constructed wetlands assume that the amount of surface area is not an important parameter. A bench-scale simulation of a constructed wetland was conducted, using bulrushes planted at varying plant densities in soil with a free water surface depth of about 0.27 m. The carbon source was diluted ENSUR (TM). Total organic carbon (TOC) removal was measured. Concentration of TOC was correlated with biochemical oxygen demand (BOD). Tests were conducted in conditions of light and dark, and under two different carbon loadings. Performance of bulrushes was compared with that of inert acrylic rods. The rate of carbon removal by mature bulrushes was found to increase with increasing plant density until oxygen became depleted. Higher densities degraded carbon at rates much faster than those predicted by current design equations. Young bulrushes degraded carbon at faster rates than mature bulrushes. Once oxygen was depleted, rates of degradation were reduced to rates anticipated by current models. When plant density was 15% or greater, oxygen became depleted in less than 6 hours. Removal efficiency was greater at higher loadings (70 mg/l BOD) than at lower loadings (25 mg/l BOD). Bulrushes performed significantly better than inert rods, sometimes by a full order of magnitude. The microbial community on the bulrushes appeared to be more complex and robust than that on the rods. Also, the presence of light did not significantly increase degradation rates for the bulrushes but was significant for the rods. The microbial community on the rods contained a larger proportion of epiphytic algae. The presence of light did result is greater overall efficiency of removal for both bulrush and rods. Currently, a major drawback of constructed wetlands in wastewater treatment has been their demand for large areas of land. This study suggests that it would be possible to reduce the land area requirements for constructed wetlands for both carbon removal and nitrification/denitrification provided designs gave more consideration to oxygen supply. Using current designs, a retention time of 4-8 days typically results in 70% BOD removal. This experiment suggests that wetlands with a retention time of about 1 day could provide the same performance if additional oxygen were supplied. Advisors/Committee Members: English, Marshall J. (advisor).

Subjects/Keywords: Constructed wetlands – Evaluation

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APA (6^th Edition):

Kuehn, E. J. (1994). Effect of plant surface area on organic carbon removal in wetlands. (Masters Thesis). Oregon State University. Retrieved from http://hdl.handle.net/1957/35230

Chicago Manual of Style (16^th Edition):

Kuehn, Elaine Jinx. “Effect of plant surface area on organic carbon removal in wetlands.” 1994. Masters Thesis, Oregon State University. Accessed October 20, 2019. http://hdl.handle.net/1957/35230.

MLA Handbook (7^th Edition):

Kuehn, Elaine Jinx. “Effect of plant surface area on organic carbon removal in wetlands.” 1994. Web. 20 Oct 2019.

Vancouver:

Kuehn EJ. Effect of plant surface area on organic carbon removal in wetlands. [Internet] [Masters thesis]. Oregon State University; 1994. [cited 2019 Oct 20]. Available from: http://hdl.handle.net/1957/35230.

Council of Science Editors:

Kuehn EJ. Effect of plant surface area on organic carbon removal in wetlands. [Masters Thesis]. Oregon State University; 1994. Available from: http://hdl.handle.net/1957/35230

Oregon State University

20. Hossain, Belayet. Kinetic design of free water surface constructed wetlands for treatment of pulp mill effluent.

Degree: MS, Bioresource Engineering, 1993, Oregon State University

URL: http://hdl.handle.net/1957/36355

Subjects/Keywords: Constructed wetlands – Design

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Hossain, B. (1993). Kinetic design of free water surface constructed wetlands for treatment of pulp mill effluent. (Masters Thesis). Oregon State University. Retrieved from http://hdl.handle.net/1957/36355

Chicago Manual of Style (16^th Edition):

Hossain, Belayet. “Kinetic design of free water surface constructed wetlands for treatment of pulp mill effluent.” 1993. Masters Thesis, Oregon State University. Accessed October 20, 2019. http://hdl.handle.net/1957/36355.

MLA Handbook (7^th Edition):

Hossain, Belayet. “Kinetic design of free water surface constructed wetlands for treatment of pulp mill effluent.” 1993. Web. 20 Oct 2019.

Vancouver:

Hossain B. Kinetic design of free water surface constructed wetlands for treatment of pulp mill effluent. [Internet] [Masters thesis]. Oregon State University; 1993. [cited 2019 Oct 20]. Available from: http://hdl.handle.net/1957/36355.

Council of Science Editors:

Hossain B. Kinetic design of free water surface constructed wetlands for treatment of pulp mill effluent. [Masters Thesis]. Oregon State University; 1993. Available from: http://hdl.handle.net/1957/36355

University of the Western Cape

21. Welz, Pamela Jean. Manipulating biotic and abiotic factors to enhance the remediation of agri-industrial wastewater in pilot-scale constructed wetlands .

Degree: 2012, University of the Western Cape

URL: http://hdl.handle.net/11394/5126

► As a consequence of various cellar activities the wine industry produces copious volumes of potentially hazardous wastewater each year. South Africa is one of the… (more)

▼ As a consequence of various cellar activities the wine industry produces copious volumes of potentially hazardous wastewater each year. South Africa is one of the top ten wine-producing countries, making the successful treatment of cellar effluent an important environmental obligation in this country. Constructed wetlands (CWs) are resilient to the seasonal input fluxes associated with agri-industrial waste and are ideal systems for the in-situ treatment of cellar effluent in small to medium-sized wineries not connected to municipal reticulation systems. In a project sponsored by the Water Research Commission of South Africa, a number of studies were undertaken to assess the remediation of winery wastewater and common components of winery wastewater in sand-filled pilot-scale constructed wetlands operated in batch mode. This thesis contains the results of three studies. The first study evaluated the temporal aspects of CW equilibration as a basis for future studies of system response to amendment. Microbial biomass and hydraulic conductivity values were monitored and microbial community fingerprints were obtained using denaturing gradient gel electrophoresis. The study showed that microbial community fingerprinting provides a valuable tool to assess the time-scales of microbial equilibration, which was found to be in the order of 100 days. In the second study, the biodegradation and mineralization of ethanol by acclimated and non-acclimated microbial populations in CWs were compared. By increasing the influent ethanol concentration at incremental intervals (incremental priming), the biodegradative capacity was significantly enhanced. At an influent COD concentration of 15 800 mg/L, no volatile fatty acids were detected in the effluent of an incrementally primed system and the maximum effluent COD measured was 180 mg/L. In contrast, an identical, unprimed system, amended with a lower concentration of COD (7587 mg/L), exhibited a maximum effluent COD concentration of 1 400 mg/L, with the metabolites butyrate and propionate accounting for up to 83% of the effluent COD. It was conclusively demonstrated that the use of incremental priming, together with the batch mode of operation enhanced long-term function of the CWs. In the third study, the removal of the phenolic component of winery wastewater was evaluated in CWs, as well as in sand columns and microcosms. It was found that at low influent phenolic concentrations in CWs, complete organic removal was accomplished, but at high concentrations, there was incomplete substrate removal and an accumulation of potentially toxic metabolites, including catechol. The sand provided a suitable substrate for the treatment of phenolic-laden waste, and both biotic (48%) and abiotic (52%) removal mechanisms effected the removal of model phenolics. Prior acclimation of microbial communities increased the biodegradation rate of phenolic acids significantly. Advisors/Committee Members: Cowan, D.A (advisor).

Subjects/Keywords: Constructed wetlands; Bioremediation; Winery wastewater; Ethanol

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APA (6^th Edition):

Welz, P. J. (2012). Manipulating biotic and abiotic factors to enhance the remediation of agri-industrial wastewater in pilot-scale constructed wetlands . (Thesis). University of the Western Cape. Retrieved from http://hdl.handle.net/11394/5126

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Welz, Pamela Jean. “Manipulating biotic and abiotic factors to enhance the remediation of agri-industrial wastewater in pilot-scale constructed wetlands .” 2012. Thesis, University of the Western Cape. Accessed October 20, 2019. http://hdl.handle.net/11394/5126.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Welz, Pamela Jean. “Manipulating biotic and abiotic factors to enhance the remediation of agri-industrial wastewater in pilot-scale constructed wetlands .” 2012. Web. 20 Oct 2019.

Vancouver:

Welz PJ. Manipulating biotic and abiotic factors to enhance the remediation of agri-industrial wastewater in pilot-scale constructed wetlands . [Internet] [Thesis]. University of the Western Cape; 2012. [cited 2019 Oct 20]. Available from: http://hdl.handle.net/11394/5126.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Welz PJ. Manipulating biotic and abiotic factors to enhance the remediation of agri-industrial wastewater in pilot-scale constructed wetlands . [Thesis]. University of the Western Cape; 2012. Available from: http://hdl.handle.net/11394/5126

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Virginia Tech

22. Ludwig, Andrea Lorene. Constructed Floodplain Wetland Effectiveness for Stormwater Management.

Degree: PhD, Biological Systems Engineering, 2010, Virginia Tech

URL: http://hdl.handle.net/10919/28460

► A 0.2-hectare wetland was constructed in the floodplain of Opequon Creek in Northern Virginia as a best management practice (BMP) for stormwater management. The research… (more)

▼ A 0.2-hectare wetland was constructed in the floodplain of Opequon Creek in Northern Virginia as a best management practice (BMP) for stormwater management. The research goals were to 1) determine if wetland hydrology existed and quantify the role of groundwater exchange in the constructed wetland (CW) water budget, 2) estimate wetland hydraulic characteristics during overbank flows, and 3) quantify the event-scale nutrient assimilative capacity of the constructed wetland. CW water table elevations and hydraulic gradients were measured through an array of nested piezometers. During controlled flooding events, stream water was pumped from the creek and amended with nutrients and a conservative tracer in two seasons to determine hydraulic characteristics and nutrient reduction. Samples were collected at the inlet, outlet structure, and at three locations along three transects along the wetland flowpath. Water table elevation monitoring demonstrated that wetland hydrology existed on the site. The mean residence time of the wetland was found to be 100 min for flow-rates of 4.25-5.1 m3/min. Residence time distributions of the high and low marsh features identified a considerable degree of flow dispersion. Manningâ s n varied between macrotopographic features and was significantly higher in the spring event as compared to the fall event, likely due to the presence of rigid-stem vegetation. Average wetland n was 0.62. Total suspended solid concentrations decreased with increasing residence time during both experiments. Mass reduction of pollutants were 73% total suspended solids (TSS), 54% ammonia-nitrogen (NH3-N), 16% nitrate-N (NO3-N), 16% total nitrogen (TN), 23% orthophosphate-phosphorus (PO4-P), and 37% total P (TP) in the fall, and 69% TSS, 58% NH3-N, 7% NO3-N, 22% TN, 8% PO4-P, and 25% TP in the spring. Linear regression of mass flux over the event hydrograph was used to determine pollutant removal rates between the wetland inlet and outlet. Pollutant removal rates were determined through linear regression of mass flux and were higher in the spring event than in the fall. Dissolved nitrogen species were more rapidly removed than dissolved phosphorus. TSS, TP, and TN removal were greater and faster than dissolved nutrient species, suggesting that physical settling was the dominant removal mechanism for stormwater pollutants. Advisors/Committee Members: Hession, William Cully (committeechair), Wynn, Theresa M. (committee member), Wolfe, Mary Leigh (committee member), Gallagher, Daniel L. (committee member), Daniels, Walter Lee (committee member).

Subjects/Keywords: Nutrient Removal; Stormwater; Constructed Wetlands; Groundwater; Phosphorus

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APA (6^th Edition):

Ludwig, A. L. (2010). Constructed Floodplain Wetland Effectiveness for Stormwater Management. (Doctoral Dissertation). Virginia Tech. Retrieved from http://hdl.handle.net/10919/28460

Chicago Manual of Style (16^th Edition):

Ludwig, Andrea Lorene. “Constructed Floodplain Wetland Effectiveness for Stormwater Management.” 2010. Doctoral Dissertation, Virginia Tech. Accessed October 20, 2019. http://hdl.handle.net/10919/28460.

MLA Handbook (7^th Edition):

Ludwig, Andrea Lorene. “Constructed Floodplain Wetland Effectiveness for Stormwater Management.” 2010. Web. 20 Oct 2019.

Vancouver:

Ludwig AL. Constructed Floodplain Wetland Effectiveness for Stormwater Management. [Internet] [Doctoral dissertation]. Virginia Tech; 2010. [cited 2019 Oct 20]. Available from: http://hdl.handle.net/10919/28460.

Council of Science Editors:

Ludwig AL. Constructed Floodplain Wetland Effectiveness for Stormwater Management. [Doctoral Dissertation]. Virginia Tech; 2010. Available from: http://hdl.handle.net/10919/28460

Virginia Tech

23. Rosenquist, Shawn Eric. Development of the Urban Wetland Filter for Managing Phosphorus in Stormwater.

Degree: PhD, Biological Systems Engineering, 2010, Virginia Tech

URL: http://hdl.handle.net/10919/77328

► Degradation of surface water quality by excess nutrients in stormwater is a substantial environmental and economic problem in the U.S. Phosphorus (P) is often the… (more)

▼ Degradation of surface water quality by excess nutrients in stormwater is a substantial environmental and economic problem in the U.S. Phosphorus (P) is often the limiting nutrient for harmful algal blooms and the best target to prevent degradation. Natural treatment strategies such as constructed wetlands (CW) demonstrate effective and economical P management but obstacles exist to implementation. Biological P removal has large land requirements that limit the use of best management practices (BMP) in high land-value areas. Various BMP also utilize sorption processes (SP) for P removal but variations in performance and finite sorption capacity limit SP as a viable long-term removal strategy. However, by understanding variability and making sorption capacity renewable, SP could provide, with shorter retention times, a space-efficient, long-term removal strategy. This multi-study research program developed the urban wetland filter (UWF), a concept intended to overcome the unique limitations of high land-value areas to natural treatment strategies and provide a low-cost, easily implemented BMP to meet P management goals while harvesting sequestered P for use as a fertilizer. Experimental factors included substrate and influent properties pertinent to understanding performance variation and optimizing microbial iron (Fe) reduction for rejuvenation of sorption capacity. Regarding performance, modeling identified major sources of variability including, by order of importance, magnitude of a solution/substrate concentration gradient, length of the "antecedent dry period" between loadings, and pH. Field-scale results confirmed this multifactor dependence of P-removal while also supporting the inclusion of cast-iron filings in substrate to improve P removal. Regarding rejuvenation, results indicated that microbial Fe reduction is capable of releasing previously sequestered P from substrates. A sufficient carbon source was necessary, but microbial inoculation was not necessary to facilitate Fe reduction, which released most of the previously sequestered P, albeit more slowly than P sequestration. Field-scale results indicated that Fe reduction might occur faster under field conditions, possibly due to humic acids, and that inclusion of cast-iron filings enabled additional P removal after rejuvenation by providing a conservative source of Fe for the creation of new sorption sites; however, cast-iron filings may also limit the release of P during rejuvenation. Advisors/Committee Members: Wynn, Theresa M. (committee member), Eick, Matthew J. (committee member), Vaughan, David H. (committeecochair), Hession, William Cully (committeecochair).

Subjects/Keywords: Stormwater; Iron Reduction; Sorption; : Phosphorus; Constructed Wetlands

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APA (6^th Edition):

Rosenquist, S. E. (2010). Development of the Urban Wetland Filter for Managing Phosphorus in Stormwater. (Doctoral Dissertation). Virginia Tech. Retrieved from http://hdl.handle.net/10919/77328

Chicago Manual of Style (16^th Edition):

Rosenquist, Shawn Eric. “Development of the Urban Wetland Filter for Managing Phosphorus in Stormwater.” 2010. Doctoral Dissertation, Virginia Tech. Accessed October 20, 2019. http://hdl.handle.net/10919/77328.

MLA Handbook (7^th Edition):

Rosenquist, Shawn Eric. “Development of the Urban Wetland Filter for Managing Phosphorus in Stormwater.” 2010. Web. 20 Oct 2019.

Vancouver:

Rosenquist SE. Development of the Urban Wetland Filter for Managing Phosphorus in Stormwater. [Internet] [Doctoral dissertation]. Virginia Tech; 2010. [cited 2019 Oct 20]. Available from: http://hdl.handle.net/10919/77328.

Council of Science Editors:

Rosenquist SE. Development of the Urban Wetland Filter for Managing Phosphorus in Stormwater. [Doctoral Dissertation]. Virginia Tech; 2010. Available from: http://hdl.handle.net/10919/77328

Delft University of Technology

24. Navrady, S. Corredor de Agua Urbano:.

Degree: 2012, Delft University of Technology

URL: http://resolver.tudelft.nl/uuid:d171183a-aff9-434c-aa8e-ad498dc059be

Graduation thesis investigating the interrelation between water infrastructure, landscape and public space in Ciudad Juarez, Mexico. The project was developed as part of the DSD Urban Asymmetries Ciudad Juarez Studio. Advisors/Committee Members: Sohn, H., Bruyns, G., Plomp, H..

Subjects/Keywords: infrastructural architecture; water treatment; constructed wetlands

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APA (6^th Edition):

Navrady, S. (2012). Corredor de Agua Urbano:. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:d171183a-aff9-434c-aa8e-ad498dc059be

Chicago Manual of Style (16^th Edition):

Navrady, S. “Corredor de Agua Urbano:.” 2012. Masters Thesis, Delft University of Technology. Accessed October 20, 2019. http://resolver.tudelft.nl/uuid:d171183a-aff9-434c-aa8e-ad498dc059be.

MLA Handbook (7^th Edition):

Navrady, S. “Corredor de Agua Urbano:.” 2012. Web. 20 Oct 2019.

Vancouver:

Navrady S. Corredor de Agua Urbano:. [Internet] [Masters thesis]. Delft University of Technology; 2012. [cited 2019 Oct 20]. Available from: http://resolver.tudelft.nl/uuid:d171183a-aff9-434c-aa8e-ad498dc059be.

Council of Science Editors:

Navrady S. Corredor de Agua Urbano:. [Masters Thesis]. Delft University of Technology; 2012. Available from: http://resolver.tudelft.nl/uuid:d171183a-aff9-434c-aa8e-ad498dc059be

Montana State University

25. Allen, Christopher Robert. Nitrogen removal and associated greenhouse gas production in laboratory-scale treatment wetlands.

Degree: College of Engineering, 2016, Montana State University

URL: https://scholarworks.montana.edu/xmlui/handle/1/9964

► Treatment wetlands (TWs) are designed to treat domestic wastewater and water polluted from non-point sources such as agricultural runoff. Because many recent design improvements have… (more)

Subjects/Keywords: Greenhouse gases.; Constructed wetlands.; Nitrogen cycle.

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APA (6^th Edition):

Allen, C. R. (2016). Nitrogen removal and associated greenhouse gas production in laboratory-scale treatment wetlands. (Thesis). Montana State University. Retrieved from https://scholarworks.montana.edu/xmlui/handle/1/9964

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Allen, Christopher Robert. “Nitrogen removal and associated greenhouse gas production in laboratory-scale treatment wetlands.” 2016. Thesis, Montana State University. Accessed October 20, 2019. https://scholarworks.montana.edu/xmlui/handle/1/9964.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Allen, Christopher Robert. “Nitrogen removal and associated greenhouse gas production in laboratory-scale treatment wetlands.” 2016. Web. 20 Oct 2019.

Vancouver:

Allen CR. Nitrogen removal and associated greenhouse gas production in laboratory-scale treatment wetlands. [Internet] [Thesis]. Montana State University; 2016. [cited 2019 Oct 20]. Available from: https://scholarworks.montana.edu/xmlui/handle/1/9964.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Allen CR. Nitrogen removal and associated greenhouse gas production in laboratory-scale treatment wetlands. [Thesis]. Montana State University; 2016. Available from: https://scholarworks.montana.edu/xmlui/handle/1/9964

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Manitoba

26. Jeke, Nicholson Ngoni. Wetland and terrestrial phytoremediation of an end-of-life municipal lagoon using cattail (Typha spp.).

Degree: Soil Science, 2018, University of Manitoba

URL: http://hdl.handle.net/1993/33564

► Spreading biosolids on farmland is a common biosolids management practice in western Canada. Wetland and terrestrial-based phytoremediation approaches may be viable options for remediating biosolids… (more)

▼ Spreading biosolids on farmland is a common biosolids management practice in western Canada. Wetland and terrestrial-based phytoremediation approaches may be viable options for remediating biosolids in end-of-life municipal lagoons. Water depth is regulated during wetland phytoremediation whereas there is no control of water regime during terrestrial phytoremediation. Studies were conducted to quantify cattail (Typha spp.) biomass and nitrogen (N) and phosphorus (P) phytoextraction from biosolids in (i) a wetland constructed in the former primary cell and (ii) a dewatered secondary cell of an end-of-life municipal lagoon. Overall, the phytoextraction of N and P by cattail was lower with a single harvest than two harvests per year. The study also examined the effects of harvest timing (August, November, and April) on nutrient removal in the harvested cattail biomass. Compared to August, harvesting cattails in the wetland in November or April reduced N and P phytoextraction by 63-85%. In the wetland study, nutrient phytoextraction was 6.2% of initial N content and 2.2% of initial P content while the terrestrial-based approach removed 5.8% and 2.3% of the initial N and P content, respectively. A greater fraction of P (~ 73%) taken up by cattail was sequestered in the rhizomes, which reduced its mobility and transport to surface waters. A study examining nutrient availability using plant root simulator (PRS) probes during wetland-based phytoremediation showed that N supply rate increased with time after July whereas phosphate supply rate remained relatively unchanged. Cumulative nutrient supply rate was positively correlated with plant uptake. The effects of flooding on P release during terrestrial phytoremediation in the secondary cell was investigated using biosolids cores. Dissolved reactive P (DRP) was the major fraction of P in floodwater. Flooding for more than 3 d resulted in the release of >0.5 mg L-1 DRP to floodwater. Our results suggest that biosolids pose a risk of P loss to surface water bodies receiving floodwater from the lagoon. Releasing floodwater closer to the start of the flooding event minimizes P release to floodwater. Overall, this research shows that phytoremediation is a viable, low-cost option for managing biosolids from end-of-life municipal lagoons. Advisors/Committee Members: Zvomuya, Francis, (Soil Science) (supervisor), Cicek, Nazim (Biosystems Engineering) Goh, Tee Boon (Soil Science) Dr. Pascal, Badiou (Soil Science) Whalen, Joann (McGill University) (examiningcommittee).

Subjects/Keywords: Phytoremediation; Biosolids; Nitrogen; Phosphorus; Constructed wetlands

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APA (6^th Edition):

Jeke, N. N. (2018). Wetland and terrestrial phytoremediation of an end-of-life municipal lagoon using cattail (Typha spp.). (Thesis). University of Manitoba. Retrieved from http://hdl.handle.net/1993/33564

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Jeke, Nicholson Ngoni. “Wetland and terrestrial phytoremediation of an end-of-life municipal lagoon using cattail (Typha spp.).” 2018. Thesis, University of Manitoba. Accessed October 20, 2019. http://hdl.handle.net/1993/33564.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Jeke, Nicholson Ngoni. “Wetland and terrestrial phytoremediation of an end-of-life municipal lagoon using cattail (Typha spp.).” 2018. Web. 20 Oct 2019.

Vancouver:

Jeke NN. Wetland and terrestrial phytoremediation of an end-of-life municipal lagoon using cattail (Typha spp.). [Internet] [Thesis]. University of Manitoba; 2018. [cited 2019 Oct 20]. Available from: http://hdl.handle.net/1993/33564.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Jeke NN. Wetland and terrestrial phytoremediation of an end-of-life municipal lagoon using cattail (Typha spp.). [Thesis]. University of Manitoba; 2018. Available from: http://hdl.handle.net/1993/33564

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Guelph

27. Rozema, Eric. Can plants be used to remove Na and Cl from nutrient solution in greenhouse production? .

Degree: 2014, University of Guelph

URL: https://atrium.lib.uoguelph.ca/xmlui/handle/10214/8363

► The potential of using halophytic wetland plants for the removal Na+ and Cl- from recirculated greenhouse nutrient solution was assessed. Eight species were screened for… (more)

Subjects/Keywords: constructed wetlands; halophytes; horticulture; phytodesalinization; water treatment

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APA (6^th Edition):

Rozema, E. (2014). Can plants be used to remove Na and Cl from nutrient solution in greenhouse production? . (Thesis). University of Guelph. Retrieved from https://atrium.lib.uoguelph.ca/xmlui/handle/10214/8363

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Rozema, Eric. “Can plants be used to remove Na and Cl from nutrient solution in greenhouse production? .” 2014. Thesis, University of Guelph. Accessed October 20, 2019. https://atrium.lib.uoguelph.ca/xmlui/handle/10214/8363.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Rozema, Eric. “Can plants be used to remove Na and Cl from nutrient solution in greenhouse production? .” 2014. Web. 20 Oct 2019.

Vancouver:

Rozema E. Can plants be used to remove Na and Cl from nutrient solution in greenhouse production? . [Internet] [Thesis]. University of Guelph; 2014. [cited 2019 Oct 20]. Available from: https://atrium.lib.uoguelph.ca/xmlui/handle/10214/8363.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Rozema E. Can plants be used to remove Na and Cl from nutrient solution in greenhouse production? . [Thesis]. University of Guelph; 2014. Available from: https://atrium.lib.uoguelph.ca/xmlui/handle/10214/8363

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Tartu University

28. Oopkaup, Kristjan. Microbial community and its relationship with pollutant removal in treatment wetlands .

Degree: 2018, Tartu University

URL: http://hdl.handle.net/10062/62595

► Tehismärgalasid (TM) on viimase poole sajandi jooksul kasutatud reovee puhastumise alternatiivse meetodina konventsionaalsete puhastite kõrval. TM erinevad omadused, sealhulgas filtermaterjali tüüp, tööparameetrid ning samuti taimestiku… (more)

▼ Tehismärgalasid (TM) on viimase poole sajandi jooksul kasutatud reovee puhastumise alternatiivse meetodina konventsionaalsete puhastite kõrval. TM erinevad omadused, sealhulgas filtermaterjali tüüp, tööparameetrid ning samuti taimestiku olemasolu, mõjutavad mikroobikoosluste struktuuri, ruumilist jaotust ja aktiivsust süsteemis. Kuna mikroobsed protsessid on TM reovee puhastusel olulise tähtsusega, aitavad uuringud mikroobiökoloogias laiendada teadmisi mikroobikoosluse kujunemisest ja seostest TM tööparameetritega, võimaldades seeläbi luua stabiilse ja metaboolselt aktiivse mikroobikoosluse jaoks sobiliku TM keskkonna ja selle kaudu tõsta erinevate reoainete puhastamise efektiivsust. Käesoleva doktoritöö eesmärgiks oli uurida eri tüüpi TM mikroobikoosluse arvukust ja struktuuri ning kuidas mikroobikoosluse parameetrid on seotud TM puhastusefektiivsusega ja millised keskkonnafaktorid mõjutavad mikroobikoosluse stabiliseerumist uuritavates süsteemides. Uurimisobjektideks olid kolm eri tüüpi TM, millest kaks olid vastrajatud eksperimentaalset TM ja üks üle 15 aasta kasutuses olnud vabaveeline jõevett puhastav TM kompleks. Saadud tulemused näitasid, et reovee koostis, TM tüüp ja töörežiim mõjutavad bakterikoosluse kujunemist ja struktuuri tehismärgalas. Mikroobikoosluse struktuuri kujunemisel oli näha sarnast ajalist suktsessiooni kahe eksperimentaalse TM vahel. Mikroobikoosluse mitmekesisus tõusis märgatavalt mõlema süsteemi esimese kolme kuu jooksul ja seejärel stabiliseerus, sealhulgas olid algsed muutused mikroobikoosluse kujunemisel suurema varieeruvusega kui pärast stabiliseerumist. Nii mikroobikoosluse mitmekesisus kui ka teatud bakteriperekondade osakaalud olid seotud nende süsteemide puhastusefektiivsustega. Töö tulemused kinnitasid mitmete koosesinevate bakterirühmade mõju nii lämmastiku kui orgaaniliste ühendite eemaldamisele reoveest. Uuritavates TM olid peamisteks lämmastikuärastuse protsessideks autotroofne ja heterotroofne nitrifikatsioon ning denitrifikatsioon ning vähemal määral anaeroobne ammooniumi oksüdeerimine, eelkõige vabaveelises tehismärgalas. Käesoleva doktoritöö tulemuste põhjal saab teha järelduse, et erinevate reoainete parimaks eemaldamiseks tuleks TM konstrueerida ja opereerida meetodil, mis loovad sobiva keskkonna mitmekesise ja kõrge metaboolse aktiivsusega mikroobikoosluse kujunemiseks.; Treatment wetlands (TWs) have been used over fifty years for purification of different types of wastewater. Pollutant removal processes in TWs are mostly related to microbiologically mediated reactions. Knowledge of the microbial community dynamics and structure and the relationship with the system properties and operating conditions is therefore crucial for the development and optimization of effective TWs. In this thesis, bacterial community abundance, structure and diversity was evaluated, as well as their relationship with the pollutant removal potential in three different types of TWs: experimental greywater-fed hybrid TW, horizontal subsurface flow filters of an experimental hybrid TW, and riverine… Advisors/Committee Members: Truu, Jaak, juhendaja (advisor), Truu, Marika, juhendaja (advisor).

Subjects/Keywords: constructed wetlands; microbial communities; wastewater treatment

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Oopkaup, K. (2018). Microbial community and its relationship with pollutant removal in treatment wetlands . (Thesis). Tartu University. Retrieved from http://hdl.handle.net/10062/62595

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Oopkaup, Kristjan. “Microbial community and its relationship with pollutant removal in treatment wetlands .” 2018. Thesis, Tartu University. Accessed October 20, 2019. http://hdl.handle.net/10062/62595.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Oopkaup, Kristjan. “Microbial community and its relationship with pollutant removal in treatment wetlands .” 2018. Web. 20 Oct 2019.

Vancouver:

Oopkaup K. Microbial community and its relationship with pollutant removal in treatment wetlands . [Internet] [Thesis]. Tartu University; 2018. [cited 2019 Oct 20]. Available from: http://hdl.handle.net/10062/62595.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Oopkaup K. Microbial community and its relationship with pollutant removal in treatment wetlands . [Thesis]. Tartu University; 2018. Available from: http://hdl.handle.net/10062/62595

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Montana State University

29. Taylor, Carrie Renee. Selecting plant species to optimize wastewater treatment in constructed wetlands.

Degree: College of Agriculture, 2009, Montana State University

URL: https://scholarworks.montana.edu/xmlui/handle/1/2398

► Constructed wetlands are used around the world for treating domestic, agricultural, and industrial wastewater, stormwater runoff, and acid mine drainage. Plants may affect efficacy of… (more)

▼ Constructed wetlands are used around the world for treating domestic, agricultural, and industrial wastewater, stormwater runoff, and acid mine drainage. Plants may affect efficacy of wastewater treatment through their influence on microbial activity by creating attachment sites and releasing carbon exudates and oxygen. My research investigated seasonal plant effects on wastewater treatment by monitoring water chemistry in model subsurface wetlands planted with monocultures of 19 plant species and unplanted controls. Chemical oxygen demand (COD) removal, an indicator of water quality, declined during colder temperatures in the unplanted control, likely caused by a decrease in microbial activity. In contrast, wetlands with most plant species had constant COD removal across seasons. Redox potential and sulfate concentrations were measured as indirect measurements of the oxygenation of the wastewater. Wetlands that had a decline in COD removal during cold temperatures had constant low redox potential and sulfate concentrations throughout the seasons. Wetlands with high COD removal across seasons had elevated redox potentials and sulfate concentrations during the winter, indicating elevated oxygen availability, which may offset the negative temperature effect on microbial processes. I measured root oxygen loss (ROL) in the summer and the winter to determine whether oxygen release was sufficient to influence wastewater treatment and cause seasonal and species-specific effects on water chemistry. COD removal and ROL were positively correlated at 4°C but not at 24°C; however, the amount of root oxygen release only accounted for a portion of the required oxygen to facilitate plant's influence on COD removal. Flooding tolerance was quantified for each species by comparing plants' biomass between flooded and drained conditions. Plants' botanical grouping, Wetland Indicator Status, and flooding tolerance were compared to plants' influences on wastewater treatment to determine whether easily measured plant traits can be used to identify plants that will optimize wastewater treatment. All the sedges and rushes, obligate wetlands species, and 8 of 9 flood-tolerant plants had greater COD removal than the control at 4°C, the coldest temperature incubation. These results can be applied for wetland design by selecting plant species to optimize wastewater treatment, especially in cold climates. Advisors/Committee Members: Chairperson, Graduate Committee: Catherine A. Zabinski. (advisor).

Subjects/Keywords: Constructed wetlands Design and construction.; Constructed wetlands.; Sewage Purification.; Plants Absorption of water.

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APA (6^th Edition):

Taylor, C. R. (2009). Selecting plant species to optimize wastewater treatment in constructed wetlands. (Thesis). Montana State University. Retrieved from https://scholarworks.montana.edu/xmlui/handle/1/2398

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Taylor, Carrie Renee. “Selecting plant species to optimize wastewater treatment in constructed wetlands.” 2009. Thesis, Montana State University. Accessed October 20, 2019. https://scholarworks.montana.edu/xmlui/handle/1/2398.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Taylor, Carrie Renee. “Selecting plant species to optimize wastewater treatment in constructed wetlands.” 2009. Web. 20 Oct 2019.

Vancouver:

Taylor CR. Selecting plant species to optimize wastewater treatment in constructed wetlands. [Internet] [Thesis]. Montana State University; 2009. [cited 2019 Oct 20]. Available from: https://scholarworks.montana.edu/xmlui/handle/1/2398.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Taylor CR. Selecting plant species to optimize wastewater treatment in constructed wetlands. [Thesis]. Montana State University; 2009. Available from: https://scholarworks.montana.edu/xmlui/handle/1/2398

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Drexel University

30. Frazier, Lindsay Elizabeth. The Effects of Water Table, Hydraulic Loading Ratio, and Climate Change on Constructed Wetland Stormwater Capture Performance.

Degree: 2016, Drexel University

URL: http://hdl.handle.net/1860/idea:6906

►

This paper investigates the effect of a high water table, hydraulic loading ratio (HLR), and climate change on a constructed wetland's (CW) water budget and… (more)

Subjects/Keywords: Environmental engineering; Constructed wetlands – Runoff – Environmental aspects; Constructed wetlands – Climatic changes – Environmental aspects

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Frazier, L. E. (2016). The Effects of Water Table, Hydraulic Loading Ratio, and Climate Change on Constructed Wetland Stormwater Capture Performance. (Thesis). Drexel University. Retrieved from http://hdl.handle.net/1860/idea:6906

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Frazier, Lindsay Elizabeth. “The Effects of Water Table, Hydraulic Loading Ratio, and Climate Change on Constructed Wetland Stormwater Capture Performance.” 2016. Thesis, Drexel University. Accessed October 20, 2019. http://hdl.handle.net/1860/idea:6906.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Frazier, Lindsay Elizabeth. “The Effects of Water Table, Hydraulic Loading Ratio, and Climate Change on Constructed Wetland Stormwater Capture Performance.” 2016. Web. 20 Oct 2019.

Vancouver:

Frazier LE. The Effects of Water Table, Hydraulic Loading Ratio, and Climate Change on Constructed Wetland Stormwater Capture Performance. [Internet] [Thesis]. Drexel University; 2016. [cited 2019 Oct 20]. Available from: http://hdl.handle.net/1860/idea:6906.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Frazier LE. The Effects of Water Table, Hydraulic Loading Ratio, and Climate Change on Constructed Wetland Stormwater Capture Performance. [Thesis]. Drexel University; 2016. Available from: http://hdl.handle.net/1860/idea:6906

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

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Open Access Theses and Dissertations