Experimental study on pollutants removal from first flush by filtration through four filter medias
The purpose of this study was to investigate the effect of pollutants removal in first flush by filtration through four filter medias. The turbidity, SS, COD, TP and TN were surveyed. Four filter medias were selected from familiar and available materials, such as slag, geotextile, nylon net and wiry net. Experiments was conducted in a elaborate channel with raw water from a tank stored man-made early rainfall which was tap water mixed with soil according to the quality of early rainwater runoff in Beijing. As a result, it was showed that the 30cm thick slag was the most effective filter media, and its removal rate for turbidity, SS,COD, TN and TP was up to 89.2%,77.0%,18.4% ,6.4% and 13.5% respectively. The sequence of pollutants removal rate from high to low was 30cm thick slag, 20cm thick slag, 10cm thick slag, geotextile, combined nylon net and wiry net, wiry net and nylon net. The geotextile, which was applied extensively in construction field, had removal rate for turbidity,SS and COD was up to 79.4%,66.4% and 14.8% respectively. The result showed the geotextile could be one type of excellent material for pollutants removal of first flush and could be used in rainwater channel, gutter or gully.
rainwater pollutants removal filter medias
Junling Wang Junqi Li Wu Che
School of Environment and Energy Engineering, Beijing University of Civil Engineering and Architectu School of Environment and Energy Engineering, Beijing University of Civil Engineering and Architectu
国际会议
The 12th Asian Pacific Confederation of Chemical Engineering Congress(第十二届亚太化工联盟大会暨化工展览会)
大连
英文
2008-08-04（万方平台首次上网日期，不代表论文的发表时间）