Pollutant concentrations and pollution loads in stormwater runoff from different land uses in Chongqing

作     者：Shumin Wang Qiang He Hainan Ai Zhentao Wang Qianqian Zhang 

作者机构：Key Laboratory of Eco-Environment of Three Gorges Region of Ministry of EducationChongqing University Key Laboratory of Water Environmental RestorationChongqing University of Arts and Science Research Center for Eco-Environmental SciencesChinese Academy of Sciences 

出 版 物：《Journal of Environmental Sciences》 (环境科学学报（英文版）)

年 卷 期：2013年第25卷第3期

页      面：502-510页

核心收录：

学科分类：08[工学] 0815[工学-水利工程] 

基　　金：supported by the Major Projects on Control and Rectification of Water Body Pollution(No.2008ZX07315-001) 

主　　题：urban land uses stormwater runoff pollution load pollutant concentration distribution 

摘      要：To investigate the distribution of pollutant concentrations and pollution loads in stormwater runoff in Chongqing,six typical land use types were selected and studied from August 2009 to September *** analysis on the distribution of pollutant concentrations in all water samples shows that pollutant concentrations fluctuate greatly in rainfall-runoff,and the concentrations of the same pollutant also vary greatly in different rainfall *** addition,it indicates that the event mean concentrations （EMCs） of total suspended solids （TSS） and chemical oxygen demand （COD） from urban traffic roads （UTR） are significantly higher than those from residential roads （RR）,commercial areas （CA）,concrete roofs （CR）,tile roofs （TRoof）,and campus catchment areas （CCA）;and the EMCs of total phosphorus （TP） and NH3-N from UTR and CA are 2.35-5 and 3 times of the class-III standard values specified in the Environmental Quality Standards for Surface Water （GB 3838-2002）.The EMCs of Fe,Pb and Cd are also much higher than the class-III standard *** analysis of pollution load producing coefficients （PLPC） reveals that the main pollution source of TSS,COD and TP is *** analysis of correlations between rainfall factors and EMCs/PLPC indicates that rainfall duration is correlated with EMCs/PLPC of TSS for TRoof and TP for UTR,while rainfall intensity is correlated with EMCs/PLPC of TP for both CR and *** results of this study provide a reference for better management of non-point source pollution in urban regions.