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首页> 外文期刊>Journal of Environmental Science and Health. A, Toxic/Hazardous Substances & Environmental Engineering >Removal of Total Suspended Solids from Wastewater in Constructed Horizontal Flow Subsurface Wetlands
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Removal of Total Suspended Solids from Wastewater in Constructed Horizontal Flow Subsurface Wetlands

机译：从人工水平流地下湿地中去除废水中的总悬浮固体

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Subsurface horizontal flow experimental wetlands (reed beds), were designed and built based on a combination of two design methodologies, that of the WRc and Severn Trent Water plc (1996) and that of the USA, EPA (1988). Four different growing media were used with a combination of top soil, gravel, river sand, and mature sewage sludge compost, to determine the best substrate for total suspended solids (TSS) removal. Eight units were constructed, two for each growing media. One bed for each pair was planted with Typha latifolia plants commonly known as cattails. Primary treated domestic wastewater, was continuously fed to the beds for more than six months. All eight beds performed very well. The best performance was achieved by the gravel reed beds with an almost constant removal rate above 95% and an average effluent concentration of less than 10 mg/L. Soil based beds containing top soil and sand, managed to reach values of removal around 90%. The wetlands containing compost in their substrate, produced an effluent with average concentration of less than 30 mg/L and a percentage removal between 80% and 90%. As expected, there was no significant difference in the performance of planted and unplanted wetlands.
机译：基于WRc和Severn Trent Water plc（1996）和美国EPA（1988）两种设计方法的组合，设计和建造了地下水平流实验湿地（芦苇床）。四种不同的生长介质与表层土壤，砾石，河砂和成熟的污水污泥堆肥结合使用，以确定去除总悬浮固体（TSS）的最佳基质。建造了八个单元，每个生长介质两个。每对一张床铺有香蒲植物香蒲。经过初步处理的生活污水连续六个月被送入床中。所有八张床都表现很好。砾石芦苇床可实现最佳性能，其去除率几乎恒定在95％以上，平均流出物浓度小于10 mg / L。包含表层土壤和沙子的土壤床设法达到90％左右的去除率。基质中含有堆肥的湿地产生的废水平均浓度低于30 mg / L，去除率在80％至90％之间。正如预期的那样，已种植和未种植湿地的性能没有显着差异。

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