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Dissertations / Theses on the topic 'Constructed wetlands'

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Published: 4 June 2021
Last updated: 25 July 2025

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1

Ryan, Christopher R. "Geotechnical investigation of Montrose wetland site." Morgantown, W. Va. : [West Virginia University Libraries], 2004. https://etd.wvu.edu/etd/controller.jsp?moduleName=documentdata&jsp%5FetdId=3723.

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Thesis (M.S.)--West Virginia University, 2004.<br>Title from document title page. Document formatted into pages; contains xii, 191 p. : ill. (some col.), maps (some col.). Vita. Includes abstract. Includes bibliographical references (p. 117-119).
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2

Eke, Paul Emeka. "Hydrocarbon removal with constructed wetlands." Thesis, University of Edinburgh, 2008. http://hdl.handle.net/1842/3155.

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Wetlands have long played a significant role as natural purification systems, and have been effectively used to treat domestic, agricultural and industrial wastewater. However, very little is known about the biochemical processes involved, and the use of constructed treatment wetlands in the removal of petroleum aromatic hydrocarbons from produced and/or processed water. Wastewaters from the oil industry contain aromatic hydrocarbons such as benzene, toluene, ethylbenzene and xylene (ortho, meta and para isomers), which are highly soluble, neurotoxic and cause cancer. The components of the hyd
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3

Johnson, Patricia Ann. "The status of freshwater compensatory wetland migration in Washington State." Online pdf file accessible through the World Wide Web, 2004. http://archives.evergreen.edu/masterstheses/Accession86-10MES/Johnson_PAMESThesis2004.pdf.

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4

Conran, Leigh Garde. "Establishment vegetation patterns in an artificial urban wetland as a basis for management." Title page, contents and abstract only, 1991. http://web4.library.adelaide.edu.au/theses/09ENV/09envc754.pdf.

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5

Taylor, Carrie Renee. "Selecting plant species to optimize wastewater treatment in constructed wetlands." Thesis, Montana State University, 2009. http://etd.lib.montana.edu/etd/2009/taylor/TaylorC0509.pdf.

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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
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6

Hunter, Sally Ann. "Habitat classification with reference to flooding and salinity, to assist with the vegetation of a saline artificial wetland /." Title page, table of contents and abstract only, 1998. http://web4.library.adelaide.edu.au/theses/09ENV/09envh947.pdf.

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7

Balderas-Guzmán, Celina. "Strategies for systemic urban constructed wetlands." Thesis, Massachusetts Institute of Technology, 2013. http://hdl.handle.net/1721.1/80907.

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Thesis (M.C.P.)--Massachusetts Institute of Technology, Dept. of Urban Studies and Planning; and, (S.M.)--Massachusetts Institute of Technology, Dept. of Architecture, 2013.<br>This electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.<br>Cataloged from student-submitted PDF version of thesis.<br>Includes bibliographical references (p. 121-128).<br>As a result of ubiquitous impermeable surfaces, conventional water management and stormwater infrastructure, and the resultant degradation of natural hydrologic
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8

Freer, Adam. "Pollutant swapping in constructed agricultural wetlands." Thesis, Lancaster University, 2016. http://eprints.lancs.ac.uk/81434/.

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Diffuse agricultural pollution presents a major challenge to global water quality management, requiring the adoption of new land management practices such as constructed agricultural wetlands. These wetlands, promoted in agri-environment schemes, may effectively intercept rainfall-mobilised phosphorus (P), nitrogen (N) and carbon (C). However, wetlands may potentially facilitate ‘pollutant swapping’: the transfer of one form or pathway of pollution for another, as a result of mitigation efforts. Retained pollutants may be remobilised through solubilisation or as the greenhouse gases (GHGs): me
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9

Gorr, Matthew W. "Arsenic Remediation Using Constructed Treatment Wetlands." University of Toledo / OhioLINK, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1301943769.

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10

Alsfeld, Amy J. "The effects of amendments and landscape position on the biotic community of constructed depressional wetlands." Access to citation, abstract and download form provided by ProQuest Information and Learning Company; downloadable PDF file, 118 p, 2007. http://proquest.umi.com/pqdlink?did=1251902791&Fmt=7&clientId=79356&RQT=309&VName=PQD.

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11

Palmer, Huckleberry Richardson. "High rates of ammonia removal in constructed treatment wetland mesocosms using oxygenation." Online access for everyone, 2008. http://www.dissertations.wsu.edu/Thesis/Spring2008/h_palmer_042508.pdf.

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12

Corbee, Gabriella. "Phosphorus accumulation in constructed wetlands : A study of 10 wetlands constructed on agricultural clay soils in Södermanland." Thesis, Uppsala universitet, Institutionen för geovetenskaper, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-448096.

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Eutrophication is a major problem causing algal blooms and impaired water quality, especially regarding coastal areas and seas. It is a result of an excessive supply of nutrients such as phosphorus (P), where agriculture accounts for the largest share of the anthropogenic nutrient load. Furthermore, arable fields with clay soils have been shown to have among the highest P-losses. In this study, 10 constructed wetlands located in agricultural areas with high clay content in the topsoil were examined. The aims were to investigate how the P accumulation is related to wetland design and catchment
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13

Yung, Sonja Burns. "Measurement of sediment oxygen demand in a created urban wetland." Thesis, This resource online, 1990. http://scholar.lib.vt.edu/theses/available/etd-08222009-040211/.

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14

Bevington, Azure E. "Environmental Factors and Typha spp Dominance in Created Wetlands." W&M ScholarWorks, 2007. http://www.vims.edu/library/Theses/Bevington07.pdf.

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15

Ari, Yilmaz. "Visions of a wetland : linking culture and conservation at Lake Manyas, Turkey /." Access restricted to users with UT Austin EID Full text (PDF) from UMI/Dissertation Abstracts International, 2001. http://wwwlib.umi.com/cr/utexas/fullcit?p3025135.

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16

Chiarawatchai, Nathasith. "Implementation of earthworm-assisted constructed wetlands to treat wastewater and possibility of using alternative plants in constructed wetlands." [Hamburg] [TUHH], 2010. http://d-nb.info/100080514X/34.

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17

Mustafa, Atif. "Nutrient removal with integrated constructed wetlands : microbial ecology and treatment performance evaluation of full-scale integrated constructed wetlands." Thesis, University of Edinburgh, 2010. http://hdl.handle.net/1842/4111.

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Wastewaters from intensive agricultural activities contain high concentrations of nitrogen and phosphorus that contributes to water management problems. During the past few years, there has been considerable interest in the use of constructed wetlands for treating surface water runoff from farmyards. If the contaminated runoff is not treated, this wastewater along with other non-point sources of pollution can seriously contaminate the surface water and groundwater. Integrated Constructed Wetlands (ICWs) are a type of free water surface wetlands. They are engineered systems that are designed, c
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18

Melton, Rebecca Hobbs. "BOD5 removal in subsurface flow constructed wetlands." Texas A&M University, 2003. http://hdl.handle.net/1969.1/2301.

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The frequency of on-site systems for treatment of domestic wastewater is increasing with new residential development in both rural and low-density suburban areas. Subsurface flow constructed wetlands (SFCW) have emerged as a viable option to achieve advanced or secondary treatment of domestic wastewater. The pollutant removal efficiency in SFCW depends on design parameters. Many of these factors have been investigated while others such as aspect ratio, design of water inlet structure and method of dosing the wetland have yet to be fully examined. This study examined the effect of aspect ratio
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19

Frazer-Williams, Ronnie. "Constructed wetlands for advanced treatment and reuse." Thesis, Cranfield University, 2007. http://dspace.lib.cranfield.ac.uk/handle/1826/2545.

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Constructed wetland technology is gaining increasing attention as a low cost-efficient alternative to high-tech treatment systems for treating municipal and industrial wastewaters especially in small communities. However, its application for grey water reuse has been rarely investigated whilst performance for nutrients (N and P) still remains relatively poor. Pilot scale study was conducted in which three differently configured subsurface constructed wetlands: a horizontal flow reed bed (HFRB), vertical flow reed bed (VFRB) and a novel system - Green Roof Water Recycling System (GROW) were inv
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20

Al-Isawi, R. H. "Urban wastewater treatment with mature constructed wetlands." Thesis, University of Salford, 2016. http://usir.salford.ac.uk/41423/.

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Despite the global acceptance for the application of vertical-flow constructed wetlands (VF CWs) as sustainable and cost-efficient technology in treating various types of wastewater, including urban wastewater, continuous loading of wetlands over time can lead to performance inefficiency and generate operational problems especially when high shock loads, such as petroleum hydrocarbon spills, are subjected to the system. Contamination with petroleum hydrocarbon compounds results in changing the structure, function and ecosystem service values of wetlands, which can eventually lead to clogging o
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21

Mann, Robert A., of Western Sydney Hawkesbury University, and Faculty of Science and Technology. "Phosphorus removal by constructed wetlands : substratum adsorption." THESIS_FST_XXX_Mann_R.xml, 1996. http://handle.uws.edu.au:8081/1959.7/333.

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The phosphorus removal characteristics of several gravel-based constructed wetland systems (CWSs) in the treatment of secondary sewage effluent was studied.Investigations were conducted on water quality parameters (redox potential, pH, dissolved oxygen and temperature) which affect phosphorus adsorption to substrata.Laboratory phosphorus adsorption experiments on Richmond CWS gravel substrata, a gravel used in Griffith CWS trials and a locally available soil, Hawkesbury sandstone, involved ion-exchange experiments and calculation of Langmuir and Freundlich adsorption isotherms and column adsor
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22

Vinluan, Edlin Artuz. "Survival of Microbial Indicators In constructed Wetlands." Thesis, The University of Arizona, 1996. http://etd.library.arizona.edu/etd/GetFileServlet?file=file:///data1/pdf/etd/azu_etd_hy0275_sip1_w.pdf&type=application/pdf.

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23

Mann, R. A. "Phosphorus removal by constructed wetlands : substratum adsorption /." View thesis View thesis, 1996. http://library.uws.edu.au/adt-NUWS/public/adt-NUWS20030514.171450/index.html.

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24

Sundberg, Carina. "Nitrifyers in constructed wetlands treating landfill leachates." Doctoral thesis, Linköping : Department of Clinical and Experimental Medicine, Linköping University, 2008. http://www.bibl.liu.se/liupubl/disp/disp2008/med1067s.pdf.

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25

Hussain, Syed. "Removal of poultry pharmaceuticals by constructed wetlands." Thesis, McGill University, 2011. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=104564.

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The main focus of the study was on three ionophoric antibiotics, monensin salinomycin and narasin. These three pharmaceuticals were evaluated both in vivo and in vitro setups to understand their fate and behavior in a constructed wetland (CW) environment. The laboratory studies determined the sorption, degradation and photodegradation potential in context of a wetland setup and, the field-scale CW experiments appraised the pharmaceutical removal potential under three flow configurations: free water surface (FWS), horizontal subsurface flow (HSSF) and vertical flow (VF) systems. FWS and HSSF sy
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26

Knowles, Paul. "Clogging in horizontal subsurface flow constructed wetlands." Thesis, Aston University, 2012. http://publications.aston.ac.uk/18725/.

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Horizontal Subsurface Flow Treatment Wetlands (HSSF TWs) are used by Severn Trent Water as a low-cost tertiary wastewater treatment for rural locations. Experience has shown that clogging is a major operational problem that reduces HSSF TW lifetime. Clogging is caused by an accumulation of secondary wastewater solids from upstream processes and decomposing leaf litter. Clogging occurs as a sludge layer where wastewater is loaded on the surface of the bed at the inlet. Severn Trent systems receive relatively high hydraulic loading rates, which causes overland flow and reduces the ability to min
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27

Richardson, J., Phillip R. Scheuerman, and M. Benton. "Biosurvey of a Constructed Wetland Using a Newly Developed Treatment Wetlands Evaluation Index." Digital Commons @ East Tennessee State University, 1996. https://dc.etsu.edu/etsu-works/2912.

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28

De, Rozari Philiphi. "An Investigation into the Use of Biochar as a Media Amendment to Treat Sewage and the Feasibility of Constructed Wetland Ecotechnology in East Nusa Tenggara Province, Indonesia." Thesis, Griffith University, 2017. http://hdl.handle.net/10072/366697.

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Constructed wetlands (CWs) are a particularly attractive option to be applied in Indonesia due to their lower cost. Plants and media are the main factors which determine the effectiveness of the CWs in removing pollutants. Biochar is a potential media amendment for pollutant removal which can be used in subsurface CWs. However, limited information is known about the effectiveness of biochar. In addition, there are still challenges to implement a new technology such as CWs in local communities in Indonesia. The first research question of this research was to investigate the effectiveness of san
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29

Rodriguez, Ruth. "Nutrient dynamics in a created desert wetland implications for the Rio Bosque Wetlands Park /." To access this resource online via ProQuest Dissertations and Theses @ UTEP, 2009. http://0-proquest.umi.com.lib.utep.edu/login?COPT=REJTPTU0YmImSU5UPTAmVkVSPTI=&clientId=2515.

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30

Chow, Siu-hang. "Vibrant green spine and constructed wetland in Tuen Mun River." Click to view the E-thesis via HKUTO, 2007. http://sunzi.lib.hku.hk/hkuto/record/B38317540.

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Thesis (M. L. A.)--University of Hong Kong, 2007.<br>Title proper from title frame. Includes special report study entitled: Constructed wetland for wildlife, drainage and sewage treatment. Also available in printed format.
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31

Samsó, Campà Roger. "Numerical modelling of constructed wetlands for wastewater treatment." Doctoral thesis, Universitat Politècnica de Catalunya, 2014. http://hdl.handle.net/10803/144624.

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Constructed Wetlands (CWs) are a wastewater treatment technology that inherits the purification potential of natural wetlands and optimizes it to comply with regulations for treated discharges. CWs have become an equally performing alternative to conventional wastewater treatment technologies of communities up to 2000PE, with lower energy and maintenance costs. Despite their potential, CWs lack reliability, which holds back their full deployment in the territory. This fact results from the lack of understanding on their internal functioning and because they are prone to clogging. The enormou
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32

Marron, Corin. "Photodegradation of metolachlor in natural and constructed wetlands." Connect to resource, 2008. http://hdl.handle.net/1811/32058.

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33

Demin, Oleg Alexandrovich. "Remediation of ammonia rich minewater in constructed wetlands." Thesis, Imperial College London, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.268403.

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34

Lewis, G., and Phillip R. Scheuerman. "Bioremediation Potential of Creosote Constituents Using Constructed Wetlands." Digital Commons @ East Tennessee State University, 1993. https://dc.etsu.edu/etsu-works/2895.

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35

Bahi, Aya. "Modelling the fate of pesticides in constructed wetlands." Electronic Thesis or Diss., Sorbonne université, 2023. http://www.theses.fr/2023SORUS037.

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Les pesticides utilisés pour améliorer la qualité des produits agricoles, sont une source de pollution diffuse qui affecte la qualité des ressources en eaux et des habitats aquatiques. Nombreuses études ont montré que les zones humides naturelles (ex. lacs, mares, et tourbières) ou construites (ex. étangs, réservoir d’irrigation, et fossé de drainage) qui interceptent les eaux agricoles, peuvent dissiper contamination par les pesticides. Cette thèse a pour objectif d’étudier le devenir des pesticides dans les zones humides artificielles (pond en anglais). Les ponds sont initialement construits
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36

Lee, Byoung-Hwa. "Constructed wetlands for the treatment of concentrated stormwater runoff : design and operation of experimental constructed wetlands applied for gully pot liquor treatment, and application of machine learning techniques to support constructed wetlands management." Thesis, University of Edinburgh, 2006. http://hdl.handle.net/1842/15197.

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The aim of this research was to assess the treatment efficiencies for concentrated stormwater runoff (gully pot liquor) of experimental vertical-flow constructed wetland filters containing common reed and different aggregates. For two years, six out of twelve filters received inflow water spiked with hydrated nickel and copper nitrate to simulate contaminated primary treated storm runoff. For those six constructed filters, an obvious breakthrough of dissolved nickel was recorded after road salting during the first winter. However, a breakthrough of nickel was not observed since the inflow pH w
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37

Davila, Pablo Arturo Yelderman Joe C. "The evaluation of a subsurface-flow constructed wetland for on-site wastewater treatment under the NSF/ANSI Standard 40 protocol design loading." Waco, Tex. : Baylor University, 2006. http://hdl.handle.net/2104/4957.

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38

Nokes, Rita Lynn. "Reduction of enteric organisms in small scale, subsurface flow constructed wetlands." Thesis, The University of Arizona, 1998. http://etd.library.arizona.edu/etd/GetFileServlet?file=file:///data1/pdf/etd/azu_etd_hy0280_sip1_w.pdf&type=application/pdf.

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39

Drizo, Aleksandra. "Phosphate and ammonium removal from waste water, using constructed wetland systems." Thesis, University of Edinburgh, 1998. http://hdl.handle.net/1842/9991.

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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 ag
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40

[Verfasser], Nathasith Chiarawatchai. "Implementation of earthworm-assisted constructed wetlands to treat wastewater and possibility of using alternative plants in constructed wetlands / von Nathasith Chiarawatchai." [Hamburg] : [TUHH], 2010. http://d-nb.info/100080514X/34.

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41

Du, Plessis Keith R. (Keith Roland). "Community-level analysis of the microbiology in constructed wetlands treating distillery effluent." Thesis, Stellenbosch : University of Stellenbosch, 2006. http://hdl.handle.net/10019.1/17322.

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Dissertation (PhD)--University of Stellenbosch, 2006.<br>ENGLISH ABSTRACT: Constructed wetlands have been widely used in the treatment of industrial and domestic wastewater to reduce biological and chemical oxygen demand (BOD and COD), to remove nitrate and enteric viruses as well as to generally improve water quality. Distillery wastewater has a complex character due to high concentrations of sugars, lignins, hemicellulose, dextrins, resins, polyphenols and organic acids, leading to a high COD that may exceed 100 000 mg/L. The potential application for the treatment of distillery wastew
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42

Mackenzie, Sally M. "The use of constructed wetlands and native wetland plants for the phytoremediation of landfill leachate." Thesis, University of Brighton, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.413104.

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43

Faulwetter, Jennifer Lynn. "Analysis of microbial biofilm community composition within constructed wetlands." Diss., Montana State University, 2010. http://etd.lib.montana.edu/etd/2010/faulwetter/FaulwetterJ1210.pdf.

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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 usage of constructed wetlands as a wastewater treatment system. The influence of plant species selection, season, and organic load rate on pollutant removal was previously linked to the redox condition of the sub-surface wetland environment. The goal of this research was to determine which of these environmental variables (including spatial location within the
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44

Rivard, Stephanie. "Evaluation of Continuous Flow Constructed Wetlands Treating Swine Waste." TopSCHOLAR®, 1997. http://digitalcommons.wku.edu/theses/352.

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The ability for wetlands to purify contaminated water is not a new concept. Natural wetlands have been cleansing water within our environment for ages. After studying the process of natural wetlands the same concept was applied to municipal waste. It is the success of constructed wetlands treating municipal waste that created the new idea for the application of a wetland system to treat wastewater from livestock facilities. Through proper design and management, constructed wetlands may be useful for reducing the nutrient concentration of waste (Rieck el al., 1996). Taking into consideration th
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45

Brook, Graham R. "The significance of constructed wetlands for practical environmental education /." Title page, contents and abstract only, 1996. http://web4.library.adelaide.edu.au/theses/09ENV/09envb871.pdf.

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46

Thomas, R. "The removal of linear alkylbenzene sulphonate in constructed wetlands." Thesis, Bangor University, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.273674.

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47

Tiefenau, Börge Mike. "Is phosphorus limiting the nitrogen removal in constructed wetlands?" Thesis, Högskolan i Halmstad, Sektionen för ekonomi och teknik (SET), 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-26257.

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Two mesocosm studies were performed in a laboratory to figure out the relevance of  the phosphorus concentration to the nitrogen removal in wetlands. The main intention was to see if phosphorus is limiting the process of denitrification. In both experiments, plastic beakers (n=20) were filled with inlet water and plant litter material from the ground of  a constructed wetland near Halmstad, Sweden.. The litter consisted mainly of dead leaves of Phragmites australis and the water, originating  from an agricultural site, had a high concentration of total nitrogen (around 9 mg/L), but a low conce
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48

Richter, Klaus M. "Constructed wetlands for the treatment of airport de-icer." Thesis, University of Sheffield, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.401070.

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49

Griffith, Kevin L. (Kevin Lynn). "Constructed wetlands : a growing opportunity for the construction industry." Thesis, Massachusetts Institute of Technology, 1992. http://hdl.handle.net/1721.1/45719.

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50

Vidales, Contreras Juan Antonio. "Removal of viruses and pollution indicators in constructed wetlands." Diss., The University of Arizona, 2001. http://hdl.handle.net/10150/280464.

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Tracer studies using Br⁻ and bacteriophage PRD1 in both surface and subsurface flow constructed wetlands were conducted to analyze their hydrodynamic behavior and efficiencies in removing viruses from wastewater. A survival test in situ was also conducted to analyze the persistency of PRD1 in wetland environments. Concurrently, a sampling program for microbial and chemical indicators in the surface flow wetland for a period of 16 months was conducted. The tracer studies revealed a reduction of 99 and 84 percent in the subsurface and surface flow wetland, respectively. Bromide recovery at the o
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