摘要
为控制城市不透水下垫面的径流污染,构建了沉淀池—草坪系统,考察了该系统对初期暴雨径流污染的控制效果。结果表明,沉淀池—草坪系统对暴雨径流中TSS、COD、TP、TN和水量的平均截留效率分别为96.24%、96.66%、94.15%、85.24%和61.92%;沉淀池对暴雨径流中TSS、COD、TP和TN的截留作用分别是草坪的12.0、9.6、2.8、1.6倍。沉淀池对径流中TSS的去除起主要作用,草坪对径流中溶解态氮、磷的去除起主要作用。沉淀池—草坪处理系统不仅能有效控制径流污染,而且能充分利用径流中的营养盐和水资源,实现雨洪资源化。
In order to control the runoff pollution in urban area with impervious surfaces, a sedimentation tank/lawn system was constructed to investigate the control of first-flush stormwater runoff pollution. The results show that the trapping rates of TSS, COD, TP, TN and water in the tank/lawn system are 96.24%0,96.66%, 94.15%, 85.24% and 61.92% respectively. The trapping efficiencies of TSS, COD, TP and TN in the tank are 12.0, 9.6, 2.8 and 1.6 times as much as that in the lawn. The sedimentation in the tank is the main mechanism for removing TSS, and the lawn treatment plays key role in the dissolved nitrogen and phosphorus removal. The tank/lawn system can effectively control the runoff pollution, take full advantage of nutrients and water resource in runoff and realize the reuse of stormwater and flood resources.
出处
《中国给水排水》
CAS
CSCD
北大核心
2008年第21期81-84,共4页
China Water & Wastewater
基金
国家高科技研究发展计划(863)项目(2002AA601022)
天津市科技创新专项资金资助项目(06FZZDSH00900)
中国科学院支持天津滨海新区建设科技行动计划项目(TJZX1-YW-03)
