摘要
Binzhou section of Changshen highway was selected to study the effectiveness of road sweeping in decreasing the pollutant loads of highway runoff.With on-site continuous sampling the discharge rules of Cu Cd Pb and Zn are analyzed.The total and dissolved event mean concentrations of Cu Pb and Zn are calculated and the loads of heavy metals attached to particles sampled before and after rainfall are also studied.A test section on highway road was swept in different frequencies during a week and the amount of removed particles was measured.Based on the analysis of highway runoff and road sweeping a prediction equation is established to calculate the pollution control efficiency of the sweeping measure and the results indicate that the 1 time/week road sweeping method can remove 47.93% of dissolved Cu 46.87% of Pb and 44.21% of Zn.
以长深高速滨州段作为研究对象,分析路面清扫措施对高速公路径流污染的控制效果.通过现场取样分析公路径流中重金属Cu,Cd,Pb和Zn的出流规律,计算出径流中Cu,Pb和Zn的事件平均总浓度和溶解态浓度以及降雨前后路面颗粒物重金属吸附量的变化;同时利用清扫车进行现场清扫实验,获得不同清扫频率下路面清扫对颗粒物的去除率.结合径流污染特性和路面清扫结果建立径流污染控制效果预测公式,并对路面清扫控制径流污染的效果进行预测,结果表明,清扫频率为1次/周时,路面清扫对溶解态Cu,Pb和Zn的去除率分别可达47.93%,46.87%和44.21%.
基金
The National Science and Technology Major Project of China(No.2008ZX07010-008-04)
