公路沥青路面径流的水质特性

Water characteristics of highway asphalt pavement runoff

公路路面结构是影响路面径流污染的重要因素之一。为探讨公路沥青路面径流污染物的特性,对沪宁高速南京段沥青路面径流排水进行连续取样监测,采用单因子指数法进行评价。结果表明,高速公路沥青路面径流污物SS、COD、BOD5及重金属Cr、Ni、Pb、Cd都具有很强的污染性,且生物可降解性很差。

The structure of highway pavement was one of the important factors in affecting the pollution of road runoff. In order to investigate the characteristics of runoff pollution of asphalt pavement, analysis of water samples collected from highway road runoff in Hu-Ning showed that the highway road runoff had strong pollution with higher concentration of SS, COD,BOD5 ,and heavy metals such as Cr, Ni, Pb, Cd by using the single factor pollution index, and possess less biodegradability. The results were the basis for its controlling measurements.