镇江老城区降雨地表径流污染特征分析  

Analysis on Characterization of Zhenjiang Old City Roadway Runoff

作　　者：储金宇[1,2] 蔡裕领[1,2] 吴春笃[1,2] 周晓红[1,2] 吕宾[1,2] 韦媛媛[1,2] 

机构地区：[1]江苏大学环境学院,江苏镇江212013 [2]江苏大学城市水资源与水环境国家重点实验室,江苏镇江212013

出　　处：《工业安全与环保》2012年第12期58-61,共4页Industrial Safety and Environmental Protection

基　　金：国家"十一五"重大科技专项项目(2008ZX07317-001)

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。为了解镇江老城区地表径流污染特征,2010年7月到8月对镇江老城区的城市客厅、江滨新村以及南门夜市这3个汇水区域在不同降雨强度下的地表径流进行监测分析。结果表明,3个汇水区域地表径流水质COD、NH3-N、SS均超出国家地表水环境V类标准,其中南门夜市(商业区)污染最为严重;从降雨-径流过程污染物浓度历时变化看,各个水质参数均呈现一定的初始冲刷现象,初期雨水污染浓度极高,随降雨历时的延长污染物浓度逐渐下降并趋于稳定;干期长度与降雨强度对地表径流水质参数COD、NH3-N的影响较显著。Urban stormwater pollution is recognized as one of the major causes of water quality deterioration in the receiving water bodies. To identify the characteristics of pollutants from old city roadway runoff, three areas, named City Square,Jiang Bin Village and South Gate Night Market are respectively selected for sampling on rainfall events during the period of July to August, 2010. The results show that three areas investigated show high level of COD,HI-Is - N and SS, which are beyond the class V of water quality standard China, but South Gate Night Market（commercial area）where concentrations of pollu- tants are mostly high. Through hydrographs and pollutograph analysis every parameter shows the first flushing phenomenon to a certain degree. Concentrations of pollutants in initial tlush are very high, and they descend sharply along with the time to reach the stable stage. Pqllutants such as COD and NI-I3 - N discharged from surface runoff depend greatly on the dry peri- ods and storms intensity in such three areas.

关 键 词：地表径流 老城区 污染特征 

分 类 号：X522[环境科学与工程—环境工程]