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进水方式对序批式人工湿地处理效能的影响

Keywords: 生活污水,人工湿地,序批式

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Abstract:

序批式人工湿地具有较高的脱氮效能,研究考察了序批式人工湿地间歇和连续2种进水方式对其处理效能的影响。研究表明,进水方式对TN去除效能影响显著,对COD、NH4+-N去除影响不显著。在水温18~25℃,负荷38gCOD/(m2·d)条件下,采用"进水10min-反应12h-排水10min-排空闲置4h"的间歇进水方式时,可使进水COD、NH4+-N和TN分别为306、65和73mg/L的生活污水,出水分别为45、7和19mg/L,去除率分别为85%、89%和74%,与"进水反应12h-排水10min-排空闲置4h"的连续进水方式相比,COD和TN的去除率分别提高4%和32%。

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