Relevant bibliographies by topics / Constructed wetlands

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
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Academic literature on the topic 'Constructed wetlands'

Author: Grafiati
Published: 4 June 2021
Last updated: 9 June 2025

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Journal articles on the topic "Constructed wetlands"

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Kennedy, Gavin, and Tatiana Mayer. "Natural and Constructed Wetlands in Canada: An Overview." Water Quality Research Journal 37, no. 2 (May 1, 2002): 295–325. http://dx.doi.org/10.2166/wqrj.2002.020.

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Abstract A review of freshwater wetland research in Canada was conducted to highlight the importance of these ecosystems and to identify wetland research needs. Both natural and constructed wetland systems are discussed. Natural wetlands are an important part of the Canadian landscape. They provide the habitat for a broad variety of flora and fauna and contribute significantly to the Canadian economy. It is estimated that the total value derived from consumptive and non-consumptive activities exceeds $10 billion annually. The past decades have witnessed the continued loss and degradation of wetlands in Canada. In spite of recent protection, Canadian wetlands remain threatened by anthropogenic activities. This review shows that more research on fate and transport of pollutants from urban and agricultural sources in wetland systems is needed to better protect the health and to assure the sustainability of wetlands in Canada. Furthermore, improved knowledge of hydrology and hydrogeochemistry of wetlands will assure more effective management of these ecosystems. Lastly, better understanding of the effect of climate change on wetlands will result in better protection of these important ecosystems. Constructed wetlands are man-made wetlands used to treat non-point source pollution. The wetland treatment technology capitalizes on the intrinsic water quality amelioration function of wetlands and is emerging as a cost-effective, environmentally friendly method of treating a variety of wastewaters. The use of wetland technology in Canada is, however, less common than in the U.S.A. A number of research needs has to be addressed before the wetland treatment technology can gain widespread acceptance in Canada. This includes research pertaining to cold weather performance, including more monitoring, research on design adaptation and investigation of the effects of constructed wetlands on wildlife.
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Xia, Hong Xia, and Qi Hong Zhu. "Purification Effect of Self-Aeration Constructed Wetlands on COD." Advanced Materials Research 690-693 (May 2013): 1122–26. http://dx.doi.org/10.4028/www.scientific.net/amr.690-693.1122.

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Aimed at the issue of dissolved oxygen concentration insufficiency in regular constructed wetlands, shale hollow bricks are adopted to build self-aeration constructed wetlands, to increase the oxygen supply capacity in the system. The experimental result indicates that DO concentration in self-aeration constructed wetlands is 0.1mg/L higher than that in artificially intensified aeration wetlands, and the removal rate for COD reaches over 85%,which is about 2% higher than that of artificial aeration wetlands. This shows that the built self-aeration constructed wetland system can increase oxygen supply capacity in the wetland, and increase the purification efficiency of the wetland system for COD in wastewater.
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Chen, Fang, and Qiang Yao. "Application of Constructed Wetland to Rural Domestic Wastewater Treatment in China." Advanced Materials Research 1073-1076 (December 2014): 1011–14. http://dx.doi.org/10.4028/www.scientific.net/amr.1073-1076.1011.

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Constructed wetland is a new wastewater treatment technology. It not only is more effective in wastewater treatment, but also has good eco-landscapes value. According to the characteristics of domestic wastewater discharge in rural, constructed wetlands is a key technology to solving this problem in China. Application of constructed wetland to Chinese rural domestic wastewater treatment was reviewed in this paper. On this basis, the issues in the application of constructed wetland encountered, and future trends are discussed. On the one hand, constructed wetlands were prone to clogging and low nitrogen removal efficiency. On the other hand, some existing constructed wetlands were abandoned due to poor maintenance and management. Therefore, in order to play better the role of wastewater treatment, anti-blocking ability and denitrification efficiency of constructed wetlands should be improved. Meanwhile, the maintenance and management of constructed wetlands should be strengthened. Application of constructed wetlands in the rural area provides a strong guarantee for sustainable development of rural economy.
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Rash, Jonathan K., and Sarah K. Liehr. "Flow Pattern Analysis of Constructed Wetlands Treating Landfill Leachate." Water Science and Technology 40, no. 3 (August 1, 1999): 309–15. http://dx.doi.org/10.2166/wst.1999.0176.

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Three series of tracer studies were performed on three constructed wetlands at the New Hanover County Landfill near Wilmington, North Carolina, USA. One vegetated free water surface wetland (FWS-R), one vegetated subsurface flow wetland (SSF-R), and one unvegetated control subsurface flow wetland (SSF-C) were studied. A conservative tracer, lithium chloride, was used to study the chemical reactor behavior of these wetlands under normal operating conditions. Results indicated that short-circuiting is quite common in SSF wetlands, while FWS wetlands are well-mixed and not as subject to short-circuiting. These results were obtained from and reinforced with tracer measurements at interior points in these wetlands, analysis of residence time distributions from two different formulations, and the construction of residence volume distributions. The short-circuiting in the SSF wetlands can be attributed to the following: (1) Vertical mixing is inhibited by a combination of physical barriers and density gradients caused by rainfall and runoff dilution of the upper layer; and (2) Leachate is drawn from the bottom of the wetland, causing it to further prefer a flow path along the bottom.
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Hadidi, Luna Al. "CONSTRUCTED WETLANDS A COMPREHENSIVE REVIEW." International Journal of Research -GRANTHAALAYAH 9, no. 8 (September 13, 2021): 395–417. http://dx.doi.org/10.29121/granthaalayah.v9.i8.2021.4176.

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Constructed wetlands are wastewater treatment systems composed of one or more treatment cells in a building designed and constructed to provide wastewater treatment. Constructed wetlands are classified into two types: free water surface (FWS) wetlands (also known as surface flow wetlands) closely resemble natural wetlands in appearance because they contain aquatic plants that are rooted in a soil layer on the bottom of the wetland and water flows through the leaves and stems of plants. Subsurface flow wetlands (SSF) or known as a vegetated submerged bed (VSB) systems do not resemble natural wetlands because they have no standing water. They contain a bed of media (such as crushed rock, small stones, gravel, sand, or soil) that has been planted with aquatic plants. When properly designed and operated, wastewater stays beneath the surface of the media, flows in contact with the roots and rhizomes of the plants, and is not visible or available to wildlife. Constructed wetlands are an appropriate technology for areas where inexpensive land is generally available and skilled labor is less available. In this paper, a comprehensive review covered types, characteristics, design variation and considerations, limitations, and the advantages and disadvantages of constructed wetlands.
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Sukhla, Prof Saurabh M., Mr Khatik Sufiyan Jameel, Mr Prasad Abhishek Ramesh, Mr Satpute Nikhil Bhairavnath, Mr Pawar Pravin Surendra, Mr Mitthe Mayur Ramnath, Prof Prashant G. Chavan, and Prof Pravin S. Chavanke. "Wastewater Treatment Using Constructed Wetland System." International Journal for Research in Applied Science and Engineering Technology 10, no. 5 (May 31, 2022): 1303–6. http://dx.doi.org/10.22214/ijraset.2022.42463.

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Abstract: Natural wetland such as marshes ,swamps and bogs protect water quality . constructed or artificial wetland system mimic the treatment that occurs in natural wetlands by rellyilng on plants and a combination of naturally occurring biological , chemical and physical processes to remove pollutants from water . As of 1999,there were more than 500 constructed wetland in Europe and 600 in north America . constructed wetland are a less energy intensive and more environmentally sound way of treating waste water and conserving potable water . The first single family home constructed wetland in southern Nevada was completed Eighth years ago. A constructed wetland (CW) is an artificial wetland to treat sewage, greywater, stormwater runoff or industrial wastewater. It may also be designed for land reclamation after mining, or as a mitigation step for natural areas lost to land development constructed wetlands also act as a biofilter and/or can remove a range of pollutants (such as organic matter, nutrients, pathogens, heavy metals) from the water. Constructed wetlands are designed to remove water pollutants such as suspended solids, organic matter and nutrients (nitrogen and phosphorus).
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Li, Hong, Hong Hu Zeng, and Yan Peng Liang. "Removal of Organochlorine Pesticides in Constructed Wetlands." Applied Mechanics and Materials 692 (November 2014): 40–43. http://dx.doi.org/10.4028/www.scientific.net/amm.692.40.

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Organochlorine pesticides have had a wide and long history of applications in many countries around the world, which cause serious environmental problems. Constructed wetlands are considered an effective means of removal of organochlorine pesticides. This study describes the constructed wetland and applications of organochlorine pesticides contamination in constructed wetlands, and focuses on purification for organochlorine pesticides of microorganisms and plants in constructed wetlands. Then discussed constructed wetlands removal influence factors of organochlorine pesticides. And put forward some recommendations in research.
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King, Andrew C., Cynthia A. Mitchell, and Tony Howes. "Hydraulic tracer studies in a pilot scale subsurface flow constructed wetland." Water Science and Technology 35, no. 5 (March 1, 1997): 189–96. http://dx.doi.org/10.2166/wst.1997.0195.

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Current design procedures for Subsurface Flow (SSF) Wetlands are based on the simplifying assumptions of plug flow and first order decay of pollutants. These design procedures do yield functional wetlands but result in over-design and inadequate descriptions of the pollutant removal mechanisms which occur within them. Even though these deficiencies are often noted, few authors have attempted to improve modelling of either flow or pollutant removal in such systems. Consequently the Oxley Creek Wetland, a pilot scale SSF wetland designed to enable rigorous monitoring, has recently been constructed in Brisbane, Australia. Tracer studies have been carried out in order to determine the hydraulics of this wetland prior to commissioning it with settled sewage. The tracer studies will continue during the wetland's commissioning and operational phases. These studies will improve our understanding of the hydraulics of newly built SSF wetlands and the changes brought on by operational factors such as biological films and wetland plant root structures. Results to date indicate that the flow through the gravel beds is not uniform and cannot be adequately modelled by a single parameter, plug flow with dispersion, model. We have developed a multiparameter model, incorporating four plug flow reactors, which provides a better approximation of our experimental data. With further development this model will allow improvements to current SSF wetland design procedures and operational strategies, and will underpin investigations into the pollutant removal mechanisms at the Oxley Creek Wetland.
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Li, Han, Radmila Petric, Zinah Alazzawi, Jake Kauzlarich, Rania H. Mahmoud, Rasheed McFadden, Niklas Perslow, et al. "Four Years Continuous Monitoring Reveals Different Effects of Urban Constructed Wetlands on Bats." Land 10, no. 10 (October 14, 2021): 1087. http://dx.doi.org/10.3390/land10101087.

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Proactive artificial wetland constructions have been implemented to mitigate the loss of wetlands and their ecosystem services. As wetlands are habitats for bats, short-term (one or two years) studies find that constructed wetlands can immediately increase local bat activity and diversity. However, it is not clear how constructed wetlands affect bats through time while the wetlands are aging. We collected four years of continuous bat acoustic monitoring data at two constructed wetlands in an urban park in Greensboro, NC, USA. We examined bat activity and community composition patterns at these wetlands and compared them with reference sites in the city. With four years of data, we found that the effects of constructed wetlands were both habitat- and species-specific. The wetland in forests significantly increased bat activity, while the wetland in the open grass altered bat community composition. Specifically, in terms of species, we found that over time, constructed wetlands no longer attracted more big brown, silver-haired, or evening bats than control sites while the wetlands aged, highlighting the need to study broadly how each bat species uses natural and artificial wetlands. We emphasize the importance of long-term monitoring and the periodical evaluation of wildlife conservation actions.
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Li, Han, Radmila Petric, Zinah Alazzawi, Jake Kauzlarich, Rania H. Mahmoud, Rasheed McFadden, Niklas Perslow, et al. "Four Years Continuous Monitoring Reveals Different Effects of Urban Constructed Wetlands on Bats." Land 10, no. 10 (June 7, 2021): 1087. https://doi.org/10.5281/zenodo.13449738.

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(Uploaded by Plazi for the Bat Literature Project) Proactive artificial wetland constructions have been implemented to mitigate the loss of wetlands and their ecosystem services. As wetlands are habitats for bats, short-term (one or two years) studies find that constructed wetlands can immediately increase local bat activity and diversity. However, it is not clear how constructed wetlands affect bats through time while the wetlands are aging. We collected four years of continuous bat acoustic monitoring data at two constructed wetlands in an urban park in Greensboro, NC, USA. We examined bat activity and community composition patterns at these wetlands and compared them with reference sites in the city. With four years of data, we found that the effects of constructed wetlands were both habitatand species-specific. The wetland in forests significantly increased bat activity, while the wetland in the open grass altered bat community composition. Specifically, in terms of species, we found that over time, constructed wetlands no longer attracted more big brown, silver-haired, or evening bats than control sites while the wetlands aged, highlighting the need to study broadly how each bat species uses natural and artificial wetlands. We emphasize the importance of long-term monitoring and the periodical evaluation of wildlife conservation actions.
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Dissertations / Theses on the topic "Constructed wetlands"

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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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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 hydrocarbon and the processes of its transformation, metabolism and degradation are complex, the mechanisms of treatment within constructed wetlands are not yet entirely known. This has limited the effective application of this sustainable technology in the oil and gas industries. Sound knowledge of hydrocarbon treatment processes in the various constructed wetlands is needed to make guided judgments about the probable effects of a given suite of impacts. Moreover, most of the traditional treatment technologies used by the oil industry such as hydrocyclones, coalescence, flotation, centrifuges and various separators are not efficient concerning the removal of dissolved organic components including aromatics in the dissolved water phase. Twelve experimental wetlands have been designed and constructed at The King’s Buildings campus (The University of Edinburgh, Scotland) using different compositions. Selected wetlands were planted with Phragmites australis (Cav.) Trin. ex Steud (common reeds). The wetlands were operated in batch-flow mode to avoid pumping costs. Six wetlands were located indoors, and six corresponding wetlands were placed outdoors to allow for a direct comparison of controlled and uncontrolled environmental conditions. The experimental wetlands were designed to optimize the chemical, physical and microbiological processes naturally occurring within wetlands. The outdoor rig simulates natural weather conditions while the indoor rig operates under controlled environmental conditions such as regulated temperature, humidity and light. Benzene was used as an example of a low molecular weight petroleum hydrocarbon within the inflow of selected wetlands. This chemical is part of the aromatic hydrocarbon group known as BTEX (acronym for benzene, toluene, ethylbenzene and xylene), and was used as a pollutant together with tap water spiked also with essential nutrients. The study period was from spring 2005 to autumn 2007. The research focused on the advancing of the understanding of biochemical processes and the application of constructed wetlands for hydrocarbon removal. The study investigated the seasonal internal interactions of benzene with other individual water quality variables in the constructed wetlands. Variables and boundary conditions (e.g. temperature, macrophytes and aggregates) impacting on the design, operation and treatment performance; and the efficiency of different wetland set-ups in removing benzene, chemical oxygen demand (COD), five-day @ 20°C N-Allylthiourea biochemical oxygen demand (BOD5) and major nutrients were monitored. Findings indicate that the constructed wetlands successfully remove benzene (inflow concentration of 1 g/l) and other water quality variables from simulated hydrocarbon contaminated wastewater streams with better indoor (controlled environment) than outdoor treatment performances. The benzene removal efficiency was high (97-100%) during the first year of operation and without visible seasonal variations. Seasonal variability in benzene removal was apparent after spring 2006, the highest and lowest benzene removal efficiencies occurred in spring and winter, respectively. In 2006, for example, benzene removal in spring was 44.4% higher than in winter. However, no seasonal variability was detected in the effluent ammonia-nitrogen (NH4-N), nitratenitrogen (NO3-N) and ortho-phosphorus-phosphate (PO4 3--P) concentrations. Their outflow concentrations increased or decreased with corresponding changes of the influent nutrient supply. In addition, benzene treatment led to trends of decreasing effluent pH and redox potential (redox) values but increasing effluent dissolved oxygen (DO) concentrations. Approximately 8 g (added to the influent every second week) of the well balanced slow-releasing N-P-K Miracle-Gro fertilizer was sufficient to treat 1000 mg/l benzene. Results based on linear regression indicated that the seasonal benzene removal efficiency was negatively correlated and closely linked to the seasonal effluent DO and NO3-N concentrations, while positively correlated and closely linked to the seasonal effluent pH and redox values. Temperature, effluent NH4-N and PO4 3--P concentrations were weakly linked to seasonal benzene removal efficiencies. During the entire running period, the seasonal benzene removal efficiency reached up to 90%, while the effluent DO, NO3-N, pH and redox values ranged between 0.8 and 2.3 mg/l, 0.56 and 3.68 mg/l, 7.03 and 7.17, and 178.2 and 268.93 mV, respectively. Novel techniques and tools such as Artificial Neural Network (self-organizing map (SOM)), Multivariable regression and hierarchical cluster analysis were applied to predict benzene, COD and BOD, and to demonstrate an alternative method of analyzing water quality performance indicators. The results suggest that cost-effective and easily to measure online variables such as DO, EC, redox, T and pH efficiently predicted effluent benzene concentrations by applying artificial neural network and multivariable regression model. The performances of these models are encouraging and support their potential for future use as promising tools for real time optimization, monitoring and prediction of benzene removal in constructed wetlands. These also improved understanding of the physical and biochemical processes within vertical-flow constructed wetlands, particularly of the role of the different constituents of the constructed wetlands in removal of hydrocarbon. These techniques also helped to provide answers to original research questions such as: What does the job? Physical design, filter media, macrophytes or micro-organisms? The overall outcome of this research is a significant contribution to the development of constructed wetland technology for petroleum industry and other related industrial application.
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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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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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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 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&Acirc;&deg;C but not at 24&Acirc;&deg;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&Acirc;&deg;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.
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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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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 networks, most American urban areas have suffered severely compromised hydrological function and health, particularly related to stormwater and its storage, treatment, and flow. Negative externalities exist at multiple scales: increased disaster vulnerability, climate change, poor water quality, habitat loss, etc. Because upgrading conventional single-purpose infrastructure has become an increasingly cost-prohibitive option, urban areas are finding that reincorporating natural systems can be more effective. In the last 20 years, constructed wetlands have arisen as a promising multi-purpose solution to stormwater problems. Constructed wetlands are artificial systems designed to mimic natural wetlands by using the same physical, biological, and chemical processes to treat water. They are relatively large, but their size gives them high ecological potential and numerous other benefits, such as flooding protection and recreational spaces, while having low life-cycle costs. Since the effectiveness of constructed wetlands comes from mimicking natural wetlands, then the analogy to nature should be extended as far as possible. In nature, wetlands are a system connected to a regional hydrologic network. Therefore, constructed wetlands distributed systemically throughout a watershed have potential to deliver more networked benefits than the current practice of dispersed and disconnected wetlands for individual sites. Yet little research exists examining the implications of urban constructed wetlands in design and planning terms, at multiple scales. In fact, few urban constructed wetland projects for stormwater exist in the first place. This thesis proposes a framework for understanding the potential of systemic constructed wetlands as landscape infrastructure in urban areas. Based on an understanding of science, engineering, and urbanism, this thesis identifies the urban zones of greatest potential for stormwater constructed wetlands and suggests the benefits that could arise out of an urban constructed wetland system, beyond simply water treatment.<br>by Celina Balderas-Guzmán.<br>S.M.<br>M.C.P.
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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): methane (CH4), carbon dioxide (CO2) and nitrous oxide (N2O). Therefore this research examines the potential for agricultural wetlands to ‘swap’ local improvements in water quality, for (1) increased pollution to groundwaters and (2) to the atmosphere. GHG exchanges from an agricultural wetland (area 0.032 ha) in Cumbria, UK were monitored over an 18 month period, using floating gas chambers, ebullition traps and diffusive gas exchange models. While the wetland was a net sink of particulate C and N, mean net releases of CO2 (2249 – 5724 mg m-2 d -1 ), N2O (0.93 – 2.04 mg m-2 d -1 ) and CH4 (169 - 456 mg m -2 d -1 ) were significantly greater than those from adjacent riparian land. Wetland releases of CH4 were most significant in terms of potential atmospheric impact compared to other wetland GHG releases. Shallow groundwater samples extracted from a piezometer network surrounding the study site, illustrated that retained sediments acted as a source of NH4-N and DOC to surface and local groundwaters but mitigated leaching and outward transport of NO3-N to surface and groundwaters. Field and laboratory microcosm experiments demonstrated that pollutant swapping of GHGs and nutrients may be increased during periods of reduced water oxygen content associated with eutrophic conditions. In wetland designs with water depths >0.5 m, anoxic conditions may perpetuate in lower water column zones and facilitate increased CH4 and NH4-N production and storage. Additionally, microcosm studies identified that disturbance of bottom sediments by stormflow may elicit heightened GHG and nutrient releases. Therefore the net impact of wetland construction in catchments may need reconsiderations, with respect to the potentially detrimental effects on water and the atmosphere. However upscaling of observations suggests that wetland implementation in the UK is unlikely to significantly increase GHG budgets. Use of shallower wetlands with vegetation or inlet baffles may reduce CH4 emissions by encouraging oxidation and protecting sediments from storm flows.
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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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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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Books on the topic "Constructed wetlands"

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Eslamian, Saeid, Saeid Okhravi, and Faezeh Eslamian. Constructed Wetlands. Boca Raton : CRC Press, [2020]: CRC Press, 2019. http://dx.doi.org/10.1201/9780429242625.

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Jaya, Kandasamy, and Vigneswaran Saravanamuthu 1952-, eds. Constructed wetlands. New York: Nova Science, 2008.

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Sarneckis, Katherine. Mosquitoes in constructed wetlands. Adelaide: Environment Protection Authority, 2002.

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Acela Montes de Oca Hernández. Humedales artificiales en México: Planteamientos alternativos a la extracción de los recursos hídricos. Toluca, Estado de México: Universidad Autónoma del Estado de México, 2021.

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Vymazal, Jan, ed. Natural and Constructed Wetlands. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-38927-1.

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Jan, Vymazal, ed. Natural and constructed wetlands: Nutrients, metals and management. Leiden, Netherlands: Backhuys Publishers, 2005.

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Stein, Otto. Constructed wetlands for the treatment of wastewater. Bozeman, Mont: Montana University System, Water Resources Center, 1996.

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Pierce, Gary J. Planning hydrology for constructed wetlands. Poolesville, MD: Wetland Training Institute, 1993.

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Austin, Gary, and Kongjian Yu. Constructed Wetlands and Sustainable Development. Abingdon, Oxon ; New York, NY : Routledge, 2016. |: Routledge, 2016. http://dx.doi.org/10.4324/9781315694221.

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VanDeWalle, Terry J. Evaluation of the Iowa Department of Transportation's compensatory wetland mitigation program. [Ames, Iowa: Iowa Dept. of Transportation], 2004.

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Book chapters on the topic "Constructed wetlands"

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Bharagava, Ram Naresh, Gaurav Saxena, and Pankaj Chowdhary. "Constructed Wetlands." In Environmental Pollutants and Their Bioremediation Approaches, 397–426. Boca Raton : Taylor & Francis, CRC Press, 2017.: CRC Press, 2017. http://dx.doi.org/10.1201/b22171-14.

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Eslamian, Saeid, Saeid Okhravi, and Mark E. Grismer. "An Introduction to Constructed Wetlands." In Constructed Wetlands, 1–10. Boca Raton : CRC Press, [2020]: CRC Press, 2019. http://dx.doi.org/10.1201/9780429242625-1.

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Okhravi, Saeid, Saeid Eslamian, and Mark E. Grismer. "Hydraulic Theory." In Constructed Wetlands, 11–25. Boca Raton : CRC Press, [2020]: CRC Press, 2019. http://dx.doi.org/10.1201/9780429242625-2.

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Eslamian, Saeid, Saeid Okhravi, and Mark E. Grismer. "Hydraulic Design of Constructed Wetland." In Constructed Wetlands, 27–41. Boca Raton : CRC Press, [2020]: CRC Press, 2019. http://dx.doi.org/10.1201/9780429242625-3.

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Okhravi, Saeid, Saeid Eslamian, and Mark E. Grismer. "Factors Affecting Constructed Wetland Hydraulic Performance." In Constructed Wetlands, 43–55. Boca Raton : CRC Press, [2020]: CRC Press, 2019. http://dx.doi.org/10.1201/9780429242625-4.

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Eslamian, Saeid, Saeid Okhravi, and Mark E. Grismer. "Future Constructed Wetland Research Orientations." In Constructed Wetlands, 57–61. Boca Raton : CRC Press, [2020]: CRC Press, 2019. http://dx.doi.org/10.1201/9780429242625-5.

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Dawen, Gao, and Mohammad Nabi. "New Constructed Wetlands." In Springer Water, 241–313. Cham: Springer Nature Switzerland, 2024. http://dx.doi.org/10.1007/978-3-031-55189-5_4.

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Zidan, Abdel Razik Ahmed, Mohammed Ahmed Abdel Hady, Abdel Razik Ahmed Zidan, and Mohammed Ahmed Abdel Hady. "Introduction." In Constructed Subsurface Wetlands, 1–5. Toronto ; Waretown, NJ, USA : Apple Academic Press, 2017. |: Apple Academic Press, 2018. http://dx.doi.org/10.1201/9781315365893-1.

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Zidan, Abdel Razik Ahmed, and Mohammed Ahmed Abdel Hady. "Literature Review." In Constructed Subsurface Wetlands, 7–67. Toronto ; Waretown, NJ, USA : Apple Academic Press, 2017. |: Apple Academic Press, 2018. http://dx.doi.org/10.1201/9781315365893-2.

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Zidan, Abdel Razik Ahmed, and Mohammed Ahmed Abdel Hady. "Field and Experimental Works." In Constructed Subsurface Wetlands, 69–109. Toronto ; Waretown, NJ, USA : Apple Academic Press, 2017. |: Apple Academic Press, 2018. http://dx.doi.org/10.1201/9781315365893-3.

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Conference papers on the topic "Constructed wetlands"

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Tumova, Tereza. "THE REMOVAL OF PHOSPHORUS FROM CONSTRUCTED WETLANDS." In 24th SGEM International Multidisciplinary Scientific GeoConference 2024, 123–30. STEF92 Technology, 2024. https://doi.org/10.5593/sgem2024v/3.2/s11.17.

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This article discusses phosphorus precipitation in constructed wetlands, which are effective at removing pollutants from wastewater, except for phosphorus. The PAX-18 coagulant was used to enhance phosphorus removal. Precipitation equipment was installed in three wetlands, each with different technological arrangements. In two of the wetlands, a gradual dosing of coagulant was implemented, while in the third, a single dose of 200 litres was applied. Dosing was based on the average phosphorus influx, with samples taken at various intervals and analysed in the laboratory using cuvette tests. In the first constructed wetland, the average concentration of total phosphorus in the precipitation section was 1.8 mg ? L-1 lower than in the section without precipitation, representing a 28% increase in efficiency. In the second wetland, the total phosphorus concentration was 1.0 mg ? L-1 lower than during periods without precipitation. In the third constructed wetland, the concentration of total phosphorus decreased by 0.2 mg ? L-1 due to phosphorus precipitation, while the average concentration of total phosphorus discharged from the wetland was 0.05 mg ? L -1, resulting in an overall efficiency of up to 98%. As phosphorus is a biogenic element, its concentration in the aquatic environment, exacerbated by climate change, causes major problems, such as eutrophication. Therefore, it is crucial to begin effectively removing phosphorus from wastewater.
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Alia, Febrinasti, Puteri Kusuma Wardhani, Sarino Sarino, and Agus Lestari Yuono. "Study of Retention Time Variation on Constructed Wetland Performance for Kitchen Wastewater Treatment." In Sriwijaya International Conference on Engineering and Technology 2023, 13–23. Switzerland: Trans Tech Publications Ltd, 2025. https://doi.org/10.4028/p-cads0d.

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Constructed wetlands are intentionally created systems designed to emphasize specific characteristics of wetland ecosystems to improve landscape, retain stormwater, and enhance its quality. The application of this system has been widely used in several countries as this system is low-cost and sustainable. The treatment performance of constructed wetlands critically relies on the optimal operating parameters, including hydraulic retention time. This prompted the implementation of this study to analyze the effectiveness of retention time variation on constructed wetland performance for domestic wastewater treatment plant. The design of the constructed wetland in this research uses Free Water Surface (FWS) or Surface Flow (SF) system using sand, gravel, and water hyacinth. Domestic wastewater from a local restaurant was used as the sample for this research. The initial kitchen wastewater concentration from the restaurant does not meet the effluent standard by the Ministry of Environment and Forestry Regulation No.68/2016. Data analysis shows a significant decrease in all pollutant parameters after 24 hours of retention time. The initial condition of BOD 1931 mg/L has been reduced to 25.12 mg/L with 98.69% efficiency. The initial condition of TSS 1200 mg/L has been reduced to 29 mg/L with 97.58% efficiency. The oil and grease concentration of 227.5 mg/L has been reduced to 1 mg/L with 99.5% efficiency. At the same time, the initial condition of COD 1356 mg/L has been reduced to 73.29 mg/L with 94.6% efficiency.
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Apolayo, Susana, and Euclides Deago. "A Comprehensive Literature Review on Constructed Wetlands: Design, Function, and Modeling Approaches." In 2024 9th International Engineering, Sciences and Technology Conference (IESTEC), 130–33. IEEE, 2024. https://doi.org/10.1109/iestec62784.2024.10820254.

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O'Shea, Marie L., Michael Borst, Daniel Liao, Shaw L. Yu, and T. Andrew Earles. "Constructed Wetlands for Stormwater Management." In 29th Annual Water Resources Planning and Management Conference. Reston, VA: American Society of Civil Engineers, 1999. http://dx.doi.org/10.1061/40430(1999)158.

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Valença, Gabriela Oliveira, Paulo Belli Filho, Dayane Dall’Ago Conejo e. Silva, and Rodrigo de Almeida Mohedano. "Constructed wetlands as carbon sinks – a review." In ENSUS2023 - XI Encontro de Sustentabilidade em Projeto. Grupo de Pesquisa Virtuhab/UFSC, 2023. http://dx.doi.org/10.29183/2596-237x.ensus2023.v11.n4.p124-136.

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In the face of global warming, research on carbon removal to mitigate the effects of climate change has been carried out. The use of constructed wetlands for wastewater treatment is known, however the quantity of studies about carbon sequestration of this system is still limited. Thus, the systematic and literature review aimed to expose the characteristics of constructed wetlands in relation to greenhouse gas emissions. The bases used were Scopus, Springer and Google Schoolar and the selected terms were related to constructed wetlands and GHG. It was concluded that the horizontal subsurface flow CWs has the potential to become a carbon sink, due to the carbon retained in the plants, and may emit less N2O than the vertical subsurface flow CW; about the emission of CH4, it is important to know the species of plant adopted due to its influence on methane emissions.
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Nietch, Christopher T., Michael Borst, and Marie L. O'Shea. "Stormwater Treatment: Ponds vs. Constructed Wetlands." In Engineering Foundation Conference 2001. Reston, VA: American Society of Civil Engineers, 2002. http://dx.doi.org/10.1061/40602(263)39.

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Berg, Joseph A. "Constructed Wetlands Storm Water Quality Treatment." In Wetlands Engineering and River Restoration Conference 1998. Reston, VA: American Society of Civil Engineers, 1998. http://dx.doi.org/10.1061/40382(1998)94.

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Chen, Yong-hua, Xiao-fu Wu, Ming-li Chen, Jing Yao, Ke-lin Li, Zhong-cheng Wang, and Dian Lei. "Constructed Landscaping Combination Constructed Wetlands System Used for Sewage Treatment." In 2010 International Conference on Digital Manufacturing and Automation (ICDMA). IEEE, 2010. http://dx.doi.org/10.1109/icdma.2010.409.

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DeBoice, John N. "Constructed Wetland Wastewater Treatment Facilities." In Wetlands Engineering and River Restoration Conference 1998. Reston, VA: American Society of Civil Engineers, 1998. http://dx.doi.org/10.1061/40382(1998)11.

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Ogden, Michael H. "Constructed Wetlands for Small Community Wastewater Treatment." In Wetlands Engineering and River Restoration Conference 1998. Reston, VA: American Society of Civil Engineers, 1998. http://dx.doi.org/10.1061/40382(1998)12.

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Reports on the topic "Constructed wetlands"

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HALVERSON, NANCY. Review of Constructed Subsurface Flow vs. Surface Flow Wetlands. Office of Scientific and Technical Information (OSTI), September 2004. http://dx.doi.org/10.2172/835229.

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Banks, M., A. Schwab, and James Alleman. Constructed Wetlands for the Remediation of Blast Furnace Slag Leachates. West Lafayette, IN: Purdue University, 2006. http://dx.doi.org/10.5703/1288284313362.

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John H. Rodgers Jr, James W. Castle, Chris Arrington: Derek Eggert, and Meg Iannacone. Specifically Designed Constructed Wetlands: A Novel Treatment Approach for Scrubber Wastewater. Office of Scientific and Technical Information (OSTI), September 2005. http://dx.doi.org/10.2172/877398.

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Peverly, J., W. E. Sanford, and T. S. Steenhuis. Constructed wetlands for municipal solid waste landfill leachate treatment. Final report. Office of Scientific and Technical Information (OSTI), November 1993. http://dx.doi.org/10.2172/10133187.

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Krafft, Douglas, Rachel Bain, Jack Cadigan, and Richard Styles. A review of tidal embayment shoaling mechanisms in the context of future wetland placement. Engineer Research and Development Center (U.S.), December 2022. http://dx.doi.org/10.21079/11681/46143.

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Wetland construction in tidally influenced embayments is a strategy for beneficial use of sediment dredged from nearby navigation channels. These projects have the potential to alter basin morphology, tidal hydrodynamics, and shoaling trends. This special report provides a broad review of the literature related to engineering-induced changes in tidal range, salinity, tidal prism, tidal asymmetry, and other known causes of shoaling. Each potential shoaling mechanism is then evaluated in the context of wetland placement to provide a foundation for future beneficial use research. Based on a compilation of worldwide examples, wetland placement may reduce tidal amplitude and enhance ebb current dominance, thus reducing shoaling rates in the channels. However, constructed wetlands could also reduce the embayment’s tidal prism and cause accelerated shoaling relative to the pre-engineered rate. Because constructed wetlands are often created in conjunction with navigation channel dredging, the system’s morphologic response to wetland construction is likely to be superimposed upon its response to channel deepening, and the net effect may vary depending on a variety of system-specific parameters. Planning for future wetland placements should include an evaluation of local hydrodynamic behavior considering these factors to predict site-specific response.
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Kim, Byung J., Sherwood C. Reed, Thomas Andrew, and Patrick D. Sullivan. Development of Constructed Wetlands for the Reuse of Wastewater in Semi-Arid Regions. Fort Belvoir, VA: Defense Technical Information Center, January 1997. http://dx.doi.org/10.21236/ada326726.

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Desiderati, Christopher. Carli Creek Regional Water Quality Project: Assessing Water Quality Improvement at an Urban Stormwater Constructed Wetland. Portland State University, 2022. http://dx.doi.org/10.15760/mem.78.

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Stormwater management is an ongoing challenge in the United States and the world at-large. As state and municipal agencies grapple with conflicting interests like encouraging land development, complying with permits to control stormwater discharges, “urban stream syndrome” effects, and charges to steward natural resources for the long-term, some agencies may turn to constructed wetlands (CWs) as aesthetically pleasing and functional natural analogs for attenuating pollution delivered by stormwater runoff to rivers and streams. Constructed wetlands retain pollutants via common physical, physicochemical, and biological principles such as settling, adsorption, or plant and algae uptake. The efficacy of constructed wetlands for pollutant attenuation varies depending on many factors such as flow rate, pollutant loading, maintenance practices, and design features. In 2018, the culmination of efforts by Clackamas Water Environment Services and others led to the opening of the Carli Creek Water Quality Project, a 15-acre constructed wetland adjacent to Carli Creek, a small, 3500-ft tributary of the Clackamas River in Clackamas County, OR. The combined creek and constructed wetland drain an industrialized, 438-acre, impervious catchment. The wetland consists of a linear series of a detention pond and three bioretention treatment cells, contributing a combined 1.8 acres of treatment area (a 1:243 ratio with the catchment) and 3.3 acre-feet of total runoff storage. In this study, raw pollutant concentrations in runoff were evaluated against International Stormwater BMP database benchmarks and Oregon Water Quality Criteria. Concentration and mass-based reductions were calculated for 10 specific pollutants and compared to daily precipitation totals from a nearby precipitation station. Mass-based reductions were generally higher for all pollutants, largely due to runoff volume reduction on the treatment terrace. Concentration-based reductions were highly variable, and suggested export of certain pollutants (e.g., ammonia), even when reporting on a mass-basis. Mass load reductions on the terrace for total dissolved solids, nitrate+nitrite, dissolved lead, and dissolved copper were 43.3 ± 10%, 41.9 ± 10%, 36.6 ± 13%, and 43.2 ± 16%, respectively. E. coli saw log-reductions ranging from -1.3 — 3.0 on the terrace, and -1.0 — 1.8 in the creek. Oregon Water Quality Criteria were consistently met at the two in-stream sites on Carli Creek for E. coli with one exception, and for dissolved cadmium, lead, zinc, and copper (with one exception for copper). However, dissolved total solids at the downstream Carli Creek site was above the Willamette River guidance value 100 mg/L roughly 71% of the time. The precipitation record during the study was useful for explaining certain pollutant reductions, as several mechanisms are driven by physical processes, however it was not definitive. The historic rain/snow/ice event in mid-February 2021 appeared to impact mass-based reductions for all metals. Qualitatively, precipitation seemed to have the largest effect on nutrient dynamics, specifically ammonia-nitrogen. Determining exact mechanisms of pollutant removals was outside the scope of this study. An improved flow record, more targeted storm sampling, or more comprehensive nutrient profiles could aid in answering important questions on dominant mechanisms of this new constructed wetland. This study is useful in establishing a framework and baseline for understanding this one-of-a-kind regional stormwater treatment project and pursuing further questions in the future.
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VanZomeren, Christine, and Jacob Berkowitz. Evaluating soil phosphorus storage capacity in constructed wetlands : sampling and analysis protocol for site selection. Engineer Research and Development Center (U.S.), September 2020. http://dx.doi.org/10.21079/11681/38224.

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Apfelbaum, Steven L., Kenneth W. Duvall, Theresa M. Nelson, Douglas M. Mensing, Harlan H. Bengtson, John Eppich, Clayton Penhallegon, and Ry L. Thompson. Wetland Water Cooling Partnership: The Use of Constructed Wetlands to Enhance Thermoelectric Power Plant Cooling and Mitigate the Demand of Surface Water Use. Office of Scientific and Technical Information (OSTI), December 2013. http://dx.doi.org/10.2172/1121759.

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Choate, K. D., J. T. Watson, and G. R. Steiner. Demonstration of constructed wetlands for treatment of municipal wastewaters, monitoring report for the period, March 1988--October 1989. Office of Scientific and Technical Information (OSTI), August 1990. http://dx.doi.org/10.2172/6075559.

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