Biokinetic model for nitrogen removal in free water surface constructed wetlands
نویسندگان
چکیده
منابع مشابه
Enhanced nitrogen removal in constructed wetlands: effects
Four horizontal subsurface flow constructed wetlands (HSFCWs), named HSFCW1 (three-stage, without step-feeding), HSFCW2 (three-stage, with step-feeding), HSFCW3 (five-stage, without step-feeding) and HSFCW4 (five-stage, with step-feeding) were designed to investigate the effects of dissolved oxygen (DO) and step-feeding on nitrogen removal. High removal of 90.9% COD, 99.1% ammonium nitrogen and...
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In South Sweden, free water surface wetlands have been built to treat wastewater from municipal wastewater treatment plants. Commonly, nitrogen removal has been the prime aim, though a significant removal of tot-P and BOD7 has been observed. In this study, performance data for 3-8 years from four large (20-28 ha) FWS wetlands have been evaluated. Two of them receive effluent from WWTP with only...
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Integrated water management has encouraged the construction of small scale wastewater treatment plants to treat residual discharges. For this study, six free-water-surface constructed wetlands have been monitored from September 1998 till April 1999 to determine their operational efficiency. These natural systems have been constructed by the Flemish Land Authority (VLM) in Wontergem. Design load...
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The Long Island Sound (LIS) estuary is affected by summer hypoxia as a result of high nitrogen loads from New York and Connecticut watersheds. In order to mitigate hypoxia, managers have established a goal of reducing the nitrogen load from nonpoint sources by 10%. One strategy to reduce N loads from nonpoint sources is the use of constructed wetlands, which provide an ecosystem service by remo...
متن کاملInvestigating the efficiency of surface flow constructed wetlands by using Cyperus alternifolius plants for nitrate removal from water
Background and Objective: Synthetic wetlands are engineering systems that use natural plants, soils and organisms to purify municipal polluted water and remove nitrate. Materials and Methods: In this study, three systems were considerd as soil culture, three systems as plant cultivation on floating plates and three other systems without plant and porous bed as. The experiments were done three ...
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ژورنال
عنوان ژورنال: Science of The Total Environment
سال: 2017
ISSN: 0048-9697
DOI: 10.1016/j.scitotenv.2017.02.089