Buildup characteristics of roof pollutants in the Shanghai urban area,China  

作　　者：Biao WANG Tian LI 

机构地区：[1]State Key Lab of Pollution Control and Resource Reuse, Tongji University, Shanghai 200092, China

出　　处：《Journal of Zhejiang University-Science A(Applied Physics & Engineering)》2009年第9期1374-1382,共9页浙江大学学报（英文版）A辑（应用物理与工程）

基　　金：Project supported by the National Key Technology R&D Program of China (No. 2006BAK13B04);the Expo Shanghai Sci-Tech Program of Science and Technology Commission of Shanghai (No. 06dz05808), China

摘　　要：The buildup of roof pollutants in an urban area of Shanghai, China was investigated by conducting 16 experiments between November 2007 and October 2008. Concentrations of Cu, Zn and Cd in runoff from three types of roof (concrete, aluminum and glass) exceeded USEPA National Recommended Water Quality Criteria. The solid/liquid partition of the selected metal elements was consistent for the three roof types: Al, Fe, Zn and Pb were present mainly in the particle-bound form, while the total loading of Cd was nearly 100% in the dissolved form. Atmospheric dry precipitation accounted for most of all pollutant loadings for all roof types, while roof material made only a minor contribution to the loadings. All pollutant accumulation rates except for COD showed a seasonal trend with peaks in spring (March^May) and winter (December^February) and troughs in summer (June^August) and autumn (September^November). Our results showed that a linear equation is the most reliable of commonly used buildup models to simulate the total phosphorus (TP) and total suspended solids (TSS) buildup processes on aluminum roofs and glass roofs. This study provided novel information about roof runoff in Shanghai, China, in terms of pollution status, pollution source and pollutant buildup processes, thereby aiding in rainwater utilization and non-point pollution control.The buildup of roof pollutants in an urban area of Shanghai, China was investigated by conducting 16 experiments between November 2007 and October 2008. Concentrations of Cu, Zn and Cd in runoff from three types of roof （concrete, aluminum and glass） exceeded USEPA National Recommended Water Quality Criteria. The solid/liquid partition of the selected metal elements was consistent for the three roof types： Al, Fe, Zn and Pb were present mainly in the particle-bound form, while the total loading of Cd was nearly 100% in the dissolved form. Atmospheric dry precipitation accounted for most of all pollutant loadings for all roof types, while roof material made only a minor contribution to the loadings. All pollutant accumulation rates except for COD showed a seasonal trend with peaks in spring （March-May） and winter （December-February） and troughs in summer （June-August） and autumn （September-November）. Our results showed that a linear equation is the most reliable of commonly used buildup models to simulate the total phosphorus （TP） and total suspended solids （TSS） buildup processes on aluminum roofs and glass roofs. This study provided novel information about roof runoff in Shanghai, China, in terms of pollution status, pollution source and pollutant buildup processes, thereby aiding in rainwater utilization and non-point pollution control.

关 键 词：Roof runoff Pollutant buildup Buildup model Seasonal trend 

分 类 号：X502[环境科学与工程—环境工程] TV87[水利工程—水利水电工程]