Experimental study of water and dissolved pollutant runoffs on impervious surfaces  

作　　者：肖洋 张涛涛 Dongfang LIANG Jack M.CHEN 

机构地区：[1]State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Hohai University [2]College of Water Conservancy and Hydropower Engineering, Hohai University [3]Department of Engineering, University of Cambridge

出　　处：《Journal of Hydrodynamics》2016年第1期162-165,共4页水动力学研究与进展B辑（英文版）

基　　金：supported by the National Natural Science Foun-dation of China(Grant No.51450110079);the Chinese Academy of Engineering(Grant No.2015-ZD-07-04-01);the Fundamental Research Funds for the Central Universities(Grant No.2015B41614)

摘　　要：The water and dissolved pollutant runoffs on impervious surfaces are the essential factor to be considered in design methods to minimize the impacts of the diffuse water pollution. In this paper, experiments are conducted to study the water and dissolved pollutant runoffs on impervious surfaces for different rainfall intensities and surface roughnesses. It is shown that a larger rainfall intensity and a smaller surface roughness reduce the time of concentration and increase the pollutant transport rate. Most of the pollutant runoffs take place at the initial stage of the rainfall. The pollutant transport rate rapidly reaches a peak and then gradually drops to zero.The water and dissolved pollutant runoffs on impervious surfaces are the essential factor to be considered in design methods to minimize the impacts of the diffuse water pollution. In this paper, experiments are conducted to study the water and dissolved pollutant runoffs on impervious surfaces for different rainfall intensities and surface roughnesses. It is shown that a larger rainfall intensity and a smaller surface roughness reduce the time of concentration and increase the pollutant transport rate. Most of the pollutant runoffs take place at the initial stage of the rainfall. The pollutant transport rate rapidly reaches a peak and then gradually drops to zero.

关 键 词：rainfall-runoff diffuse pollution overland flow flooding urban runoff 

分 类 号：X52[环境科学与工程—环境工程]