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添加有机质对生态滤沟去除径流中氮磷等物质的模拟研究 被引量:4

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摘要 通过生态滤沟土柱模拟径流试验,分析了在3种填料中添加不同有机质的生态滤沟对地表径流中氮磷等物质的去除和水文响应效果。结果表明,基质为陶粒+碎木屑的系统有较好且稳定的净化效果,其COD、TN和TP平均去除率分别为86.4%、60.5%和97.9%;较无有机质情况,添加有机质的系统TN去除率提高了15%~33%,且碎木屑优于草炭土(P<0.05);添加草炭土的系统有更高的TP去除率,但相差不大;生态滤沟对模拟径流均有较好的渗透性能,添加草炭土能提高系统削峰减量效果。工程应用中,可根据需求在填料中添加10%左右的有机质,以提高生态滤沟对氮磷等物质质去除及洪峰削减效果。
出处 《给水排水》 CSCD 北大核心 2016年第S1期127-132,共6页 Water & Wastewater Engineering
基金 国家水体污染控制与治理科技重大专项(2011ZX07303-001)
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参考文献26

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