constructed wetlands Articles

  • Water cleaning and wetland construction

    Slippery Rock University's Macoskey Center for Sustainable Systems has served as an ideal locale for the study of biological waste and wastewater concerns in Western Pennsylvania. The Center's constructed ponds, waterless composting toilet and indoor greywater treatment system produced, in 19982000, great amounts of data on ecological approaches to wastewater treatment, which need to be reviewed. ...


    By Inderscience Publishers

  • Performance characterisation of a constructed Wetland

    Performance of a constructed wetland is commonly reported as being variable due to the site specific nature of influential factors. This paper discusses the outcomes from an in-depth study which characterised the treatment performance of a wetland based on the variation in the runoff regime. The study included a comprehensive field monitoring of a well-established constructed wetland in Gold ...


    By IWA Publishing

  • Q&A To Constructed Wetlands

    The booklet "Q&A To Constructed Wetlands" provides a better understanding on the use of constructed wetlands to treat wastewater as compared to conventional methods. This booklet was jointly produced by The National Hydraulic Research Institute of Malaysia (NAHRIM) and Wetlands International, Malaysia. Description: Constructed Wetlands are artificial wastewater treatment ...


    By Wetlands International

  • Vertical Flow Constructed Wetlands

    The constructed wetland technology is today continuously evolving with new and innovative applications. Vertical flow constructed wetlands is a relatively new and still developing technology in the field of ecological and environmental engineering. These ecological systems offers us the potential to treat water and sludge in a more sustainable way, even when financial sources are limited. The ...


    By IWA Publishing

  • Constructed Wetlands I

    Traditional constructed wetland are shallow planted basins for cleaning anthropogenic discharges (wastewater or polluted runoff). They were used for cleaning of: domestic wastewater agricultural wastewater coal mine drainage stormwater runoff The main construction elements were: inflow ( e.g. sedimentation part) substrat (soil ...


    By IWA Publishing

  • Construction and operation costs of constructed wetlands treating wastewater

    Design data from nine constructed wetlands (CW) facilities of various capacities (population equivalent (PE)) are used to estimate construction and operation costs, and then to derive empirical equations relating the required facility land area and the construction cost to PE. In addition, comparisons between the costs of CW facilities based on various alternative construction materials, i.e., ...


    By IWA Publishing

  • Constructed wetlands for wastewater reuse in agriculture

    Deteriorating quality and increasing scarcity of water in Iraq demands a rethink in the way wastewater is managed. We show here that a constructed wetland can assist an existing sewage treatment plan not only to be lower than actual Iraqi effluent standards, but to also meet water quality criteria for reuse in agricultural production. Scarcity is one of several challenges to the Iraqi waters. The ...


    By IWA Publishing

  • Constructed wetlands for urban grey water recycling

    Three differently configured constructed wetlands: a Horizontal Flow Reed Bed (HFRB), Vertical Flow Reed Bed (VFRB) and a novel constructed wetland (the Green Roof Water Recycling System (GROW) patent number GB 2375761) were compared for treatment of weak organic strength domestic grey water for reuse over a period of nine months. Influent and effluent were characterized in terms of standard ...


    By Inderscience Publishers

  • Treatment of polluted river water by a new constructed wetland

    Abstract: A new constructed wetland was built to purify one polluted river in Taiwan, and this study was conducted to evaluate the treatment efficiency of the wetland. Due to the very limitation of available budget, several water quality items, which were stipulated by Taiwan’s Environmental Protection Administration for rivers, in the influent and effluent of wetland were analyzed and ...

  • Use of vetiver grass constructed wetland for treatment of leachate

    Performance of Constructed Wetland planted with vetiver grasses for the treatment of leachate was investigated in controlled experiments involving horizontal subsurface flow constructed wetland (HSSFCW). The HSSFCW experimental unit had two cells, one planted with vetiver grasses and another bare. Both units were packed with limestone gravel as substrate and were operated with equal hydraulic ...


    By IWA Publishing

  • Study of oyster shell as a potential substrate for constructed wetlands

    We tested the suitability of oyster shell (OS) as a substrate for phosphorus removal in constructed wetlands (CWs) treating swine wastewater. OS is proven to have a significant phosphorus adsorption capacity; significant phosphorus removal was achieved in vertical subsurface flow constructed wetlands (VSSFs) that were filled with OS and used to treat swine wastewater. In the VSSF system, OS ...


    By IWA Publishing

  • Constructed wetlands: a solution to water quality issues in Mexico?

    Historically, water sanitation has not been a priority for any sector of society in Mexico, and substantial technical and ecological problems exist in this country's wastewater treatment systems. Constructed wetlands (CWs) have proven to be an exceptional alternative, particularly for rural areas in developing countries. This paper identifies the status of research on CWs in Mexico, and ...


    By IWA Publishing

  • Numerical modelling: a tool for better constructed wetland design?

    There is a need for a simplified computer-based design tool for subsurface flow constructed wetlands (CWs) which is based on process-based numerical models. Parameters of existing design guidelines and rules have been derived from experiments under specific conditions. Therefore designing CWs using these parameters is limited to these conditions (i.e. temperature, wastewater composition, filter ...


    By IWA Publishing

  • A decade of compact vertical flow constructed wetlands

    Compact vertical flow constructed wetlands (1–2 m2/pe, down-flow, single bed, >500 mm sand depth) were first installed in the UK in 1998, since when over 40 such beds have been implemented. After ten years of experience, this approach to wastewater treatment is reviewed with respect to operation and maintenance, and water quality improvement. Despite considerable accumulation of organic solids on ...


    By IWA Publishing

  • Constructed wetlands as an alternative restoration measure for shallow lakes

    This paper deals with the consequences of cultural eutrophication and unconventional solutions for shallow lake restoration. Cultural eutrophication is the primary problem that affects especially shallow lakes, due to their physical characteristics (e.g. shallow depth, lack of stratification). Palic Lake, a very shallow Pannonian lake, received treated municipal wastewaters coming from the ...


    By IWA Publishing

  • Are constructed treatment wetlands sustainable sanitation solutions?

    The main objective of sanitation systems is to protect and promote human health by providing a clean environment and breaking the cycle of disease. In order to be sustainable, a sanitation system has to be not only economically viable, socially acceptable and technically and institutionally appropriate, but it should also protect the environment and the natural resources. ...


    By IWA Publishing

  • Wineries wastewater treatment by constructed wetlands: a review

    The application of wetland systems for the treatment of wineries wastewater started in the early 1990s in the USA followed a few years later by France, Italy, Germany and Spain. Various studies demonstrated the efficiency of constructed wetlands (CWs) as a low cost, low maintenance and energy-saving technology for the treatment of wineries wastewater. Several of these experiences have also shown ...


    By IWA Publishing

  • Study of oyster shell as a potential substrate for constructed wetlands

    We tested the suitability of oyster shell (OS) as a substrate for phosphorus removal in constructed wetlands (CWs) treating swine wastewater. OS is proven to have a significant phosphorus adsorption capacity; significant phosphorus removal was achieved in vertical subsurface flow constructed wetlands (VSSFs) that were filled with OS and used to treat swine wastewater. In the VSSF system, OS ...


    By IWA Publishing

  • Disinfection capacity of seven constructed wetlands and ponds

    The disinfection performance of three subsurface flow constructed wetlands (SSF), a free-water surface-constructed wetland and three ponds were investigated. They functioned as advanced treatment stage following treatment in a large municipal wastewater treatment plant equipped with nutrient removal. Despite low influent concentrations of 103.9/100 mL, Escherichia coli underwent a ...


    By IWA Publishing

  • Exploring fecal indicator bacteria in a constructed stormwater wetland

    Microbial pollution in surface waters is a concern throughout the world, with both public health and economic implications. One contributing source to such pollution is stormwater runoff, often treated using various types of stormwater control measures. However, relatively little is known regarding microbe sequestration in constructed stormwater wetlands (CSWs), one type of commonly installed ...


    By IWA Publishing

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