摘要
以苏州城区为例,在多雨季节对商业区、工业区、居民区三大功能区的降雨径流水质进行了6次采样监测,发现不同功能区地表径流水质差异较大,前10min初雨径流中各功能区COD、TN、NH4+-N、SS及工业区TP的平均浓度均劣于Ⅴ类水质标准。另外商业区初雨径流中COD、SS、TN、NH4+-N浓度均高于其他功能区,工业区初雨径流中TP浓度高于商业区和居民区。随着降雨历时的延长,降雨径流中主要污染物浓度均逐渐下降并趋于稳定。
Six samples were taken from three different functional districts, i.e. commercial, industrial and residential districts of Suzhou City during rainy season. The results show that water quality of surface runoff differs greatly in different districts. The average concentrations of COD, TN, NH4^＋ -N and SS in all districts and TP in industrial district during the first 10 rain runoff were below grade V of surface water environment standard. In initial runoff of corranercial district, the concentrations of COD, SS, TN and NH4^＋ -N are higher than those of other districts as well as the concentration of TP in industrial district. The concentrations of pollutants in runoff descend with the time and tend to be stable.
出处
《水资源保护》
CAS
北大核心
2007年第2期57-59,63,共4页
Water Resources Protection
基金
国家高技术研究发展计划资助项目(863)(2003601070)
