Evaluation of Available Cumulative Wash-off Pollutants on Impervious Surface
It is widely accepted that pollutants originating from urban imperious surface dramatically alter receiving water quality.Modeling is the primary tool used for pollutants quantity estimation.However,the effectiveness of such estimation strongly relies on the accuracy and reliability of cumulative pollutants on impervious surface.In order to investigate such pollutants,the dry vacuuming and wet vacuuming method usually used to sediment collection.They were not effective for evaluation of the wash-off pollutants because rainfall only removes a fraction of finer particles.Basis of wash-off pollutants in stormwater runoff,a research methodologies formulated investigation into wash-off pollutants was presented,which was capable of evaluated the wash-off pollutants on impervious surface.Samples from road and roof runoff were analyzed for TSS,COD,TP,TN,NH3-N,N03-N.Available cumulative wash-off pollutants was assessed based on the monitoring data,and the multiple regressions were used to determine relationship amongst different pollutants.It was found that cumulative TSS were far below of vacuuming collection,largely because only a small fraction of pollutants was mobilized to runoff TSS buildup on road surface was higher than which on roof,but TN is reverse.Phosphorus and COD were at similar levels.The cumulative wash-off pollutants did not correlate well each other,showed that source of these pollutants could be various.The wash-off particle size was finer than vacuumed particle,showed that the rainwater only washed the part of finer cumulative pollutants on impervious surface.The evaluation of available cumulative wash-off pollutants would be helpful development of best management practice for stormwater pollutants.
nonpoint pollution stromwater buildup water pollution best management practice (BMP)
Wang Baoshan Huang Tinglin
The School of Environmental & Municipal Engineering, Lanzhou Jiaotong University, Lanzhou, China School of Environmental and Municipal Engineering, Xi an University of Architecture & Technology, X
国际会议
2013青岛国际脱盐大会(Qingdao International Conference 2013 on Desalination and Water Reuse)
青岛
英文
75-79
2013-06-25（万方平台首次上网日期，不代表论文的发表时间）