雨水径流截流渗滤系统控制城市面源污染的中试研究  

Urban Non-point Source Pollution Control by Runoff Retention and Filtration Pilot System

作　　者：白瑶[1] 左剑恶[1] 干里里[1] 罗同顺[1] 缪恒峰[2] 阮文权[2] 黄霞[1] 

机构地区：[1]清华大学环境科学与工程系,环境模拟与污染控制国家重点联合实验室,北京100084 [2]江南大学环境与土木工程学院,无锡214122

出　　处：《环境科学》2011年第9期2562-2568,共7页Environmental Science

基　　金：国家水体污染控制与治理科技重大专项(2008ZX07313-004)

摘　　要：设计雨水径流截流渗滤中试系统,监测其对汇水路面上降雨径流的长期净化效果,分析2次典型降雨径流的污染特征及系统处理效果.结果表明,路面径流污染严重,SS、COD、TN、TP的平均浓度分别为361、135、7.88和0.62 mg/L;长时降雨形成的径流表现出明显初期效应,前25%水量中所含的SS、TP、DTP及PO34-等污染物的量均超过总量的50%;在形成的径流总量小于截流池体积的情况下,该系统可100%去除径流形成的面源污染;当径流量超过截流池体积时,溢流部分经由渗滤池净化,系统对SS、COD、TN、TP、DTP和PO34-等污染物总量的去除率可分别达到97.4%、61.8%、22.6%、85.1%、72.1%和85.2%;系统长期运行稳定,对SS、COD、TN和TP等主要污染物浓度的去除率分别为98.6%、65.4%、55.1%和92.6%,可大幅削减径流引起的面源污染.A runoff retention and filtration pilot system was designed and the long-term purification effect of the runoff was monitored.Runoff pollution characters in 2 typical events and treatment effect of the pilot system were analyzed.The results showed that the runoff was severely polluted.Event mean concentrations（EMCs） of SS,COD,TN and TP in the runoff were 361,135,7.88 and 0.62 mg/L respectively.The runoff formed by long rain presented an obvious first flush effect.The first 25% flow contributed more than 50% of the total pollutants loading of SS,TP,DTP and PO3-4.The pilot system could reduce 100% of the non-point source pollution if the volume of the runoff was less than the retention tank.Otherwise the overflow will be purification by the filtration pilot system and the removal rates of SS,COD,TN,TP,DTP and PO3-4 reached 97.4%,61.8%,22.6%,85.1%,72.1%,and 85.2% respectively.The system was stable and the removal rate of SS,COD,TN,and TP were 98.6%,65.4%,55.1% and 92.6%.The whole system could effectively remove the non-point source pollution caused by runoff.

关 键 词：面源污染 径流 初期径流 截流 渗滤 总磷 

分 类 号：X143[环境科学与工程—环境科学]