水科学进展2016，Vol.27Issue(6)：898-908,11.DOI:10.14042/j.cnki.32.1309.2016.06.013
生态滤沟对城市路面径流的净化效果试验及模拟
Pilot scale experiments and simulation of the purification effects of bioswale on urban road runoff
摘要
Abstract
The purification effects and suitable operation conditions of bio-swale on urban road runoff are investigated through experiment and simulation. Two types of bioswale system were designed:one with semi-permeable substrate, and another with impermeable substarte. Each type consists of 5 bioswales with different typical media. The experimen-tal conditions were selected through multi-level orthogonal test with different influence factors and single-factor analy-ses. The results show that media combination is the most important factor affecting the overall treatment effect. The bio-swales achieved the best purification effect with fly ash mixing sand as the media, and the overall removal rates were 83. 12% and 73. 18% for the impervious and semipermeable types. The optimal submerged zone height was 150 mm. Multiple regression models among the pollutant (TN, TP) removal rate, discharge rate and operation factors were de-rived with high determination coefficient (R2) and Nash-Suttcliffe coefficient. The Hydrus-1D model was then used to simulate the TP vertical migration in the bioswale under three influent concentrations. The mean relative errors of efflu-ent concentration between simulated values and measured data were 14. 11%, 17. 33% and 26. 57% respectively, in-dicating good modeling results.关键词
生物滞留/城市路面径流/填料/多元回归模型/Hydrus-1DKey words
bioretention/urban road runoff/media/multiple regression model/hydrus-1D分类
资源环境引用本文复制引用
李家科,蒋春博,张思翀,李怀恩..生态滤沟对城市路面径流的净化效果试验及模拟[J].水科学进展,2016,27(6):898-908,11.基金项目
国家自然科学基金资助项目（51279158）；陕西省自然科学基金重点资助项目 （）
