成都市道路地表径流污染及对策  

Pollution of Urban-road Runoff and Its Countermeasure in Chengdu

作　　者：张光岳[1] 张红[2] 杨长军[1] 王益谦[1] 

机构地区：[1]四川大学建筑与环境学院,成都610064 [2]中国科学院研究生院

出　　处：《城市环境与城市生态》2008年第4期18-21,共4页Urban Environment & Urban Ecology

摘　　要：城市道路地表径流污染已经成为城市水体恶化的重要原因之一。2006年8月-11月,通过对成都市9条不同类型道路6次降雨径流水质的监测分析,探讨了成都市路面径流污染的现状、成都市道路地表径流的污染负荷及道路地表径流中污染物之间的相关性关系。结果表明,成都市道路地表径流中污染物SS、COD、TN、TP的含量高,浓度均超出地表水环境质量Ⅴ级标准。成都市道路地表径流的年污染负荷为LCOD=3.1×104t,LTN=1.19×104t,LTP=1174.9 t,LZn=109.46 t。SS浓度与污染物COD、TN、TP、Zn浓度之间存在较好的相关关系(R2>0.8)。可以通过控制径流系数、削减径流中的污染物含量和污染物总量控制3个方面的措施来进行道路地表径流污染的削减。Urban-road runoff has become one of the most important reasons causing the deterioration of the urban water quality.Six rainfall-runoff water qualities from nine different kinds of roads were monitored in Chengdu.The actuality of surface runoff,the pollution loading of Chengdu Urban-road runoff were investigated and the correlations were analyzed between COD,TN,TP,Zn concentration and SS content.The results showed that the concentrations of SS,COD,TN and TP all exceeded the fifth level of the environmental quality standards.The annual pollution loading of Chengdu Urban-road runoff is LCOD=3.1×104t,LTN=1.19×104t,LTP=1174.9t,LZn=109.46t.The correlation coefficients between COD,TN,TP concentration and SS content are all larger than 0.8.The pollution of urban-road surface runoff can be reduced by three ways,such as controlling runoff coefficients,reducing the content of pollutions and controlling the total amount of pollutions.

关 键 词：面源污染 地表径流 城市道路 成都 

分 类 号：X522[环境科学与工程—环境工程]