水流速度对生态透水混凝土净化效果的影响研究
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摘要
生态透水混凝土作为一种新兴的大空隙路面铺装材料,现已广泛应用于道路径流污染物的净化工程,在其阻滞道路径流污染的实际情况中,水流速度对生态透水混凝土净化径流污水的效果也有着一定的影响,为探究这一问题,展开了深入的分析。以路面径流污染物平均单位时间过水量为基础指标,选取其一倍、二倍、三倍的污水水流速度来分别模拟试验,试件选用未掺加净化材料、10%陶粒掺量和20%硅藻土掺量的三组生态透水混凝土,通过试验及其结果分析,探究出水流速度对生态透水混凝土污染物去除率的影响规律,为生态透水混凝土的应用推广提供了参考意见。
As an emerging large-void pavement material, eco-permeable concrete has been widely used in the purification of road runoff pollutants. In the actual situation of its blocking runoff pollution,the flow velocity has a certain influence on the effect of eco-permeable concrete purifying runoff sewage. And an in-depth analysis has been carried out to explore this issue. Taking the average unit time water flow of surface runoff pollutants as the basic index, the water flow velocity of one, two and three times of the sewage was selected to simulate the test respectively. The 0 purification addition, 10% ceramsite and 20% diatomite were selected as test pieces. After test and result analysis, the effects of water velocity on the removal rate of pollutants by ecological permeable concrete were explored, which provided a reference for the application and promotion of ecological permeable concrete.
As an emerging large-void pavement material, eco-permeable concrete has been widely used in the purification of road runoff pollutants. In the actual situation of its blocking runoff pollution,the flow velocity has a certain influence on the effect of eco-permeable concrete purifying runoff sewage. And an in-depth analysis has been carried out to explore this issue. Taking the average unit time water flow of surface runoff pollutants as the basic index, the water flow velocity of one, two and three times of the sewage was selected to simulate the test respectively. The 0 purification addition, 10% ceramsite and 20% diatomite were selected as test pieces. After test and result analysis, the effects of water velocity on the removal rate of pollutants by ecological permeable concrete were explored, which provided a reference for the application and promotion of ecological permeable concrete.
引文
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[2]Sansalone,JJ,Buchberger,et al.Partitioning And First Flush Of Metals In Urban Roadway Storm Water[J],1997,123(2):134-143.
[3]Kayhanian,Masoud,Fruchtman,et al.Review Of Highway Runoff Characteristics:Comparative Analysis And Universal Implications[J],2012,46(20):6609-6624.
[4]Geonha Kim,Joonghyun,Jeongkon.Diffuse Pollution Loading From Urban Stormwater Runoff In Daejeon City,Korea[J],2007,85(1):9-16.
[5]Kurihara,Oshawa.Experimental study on the clogging of voids of porous concrete and porous asphalt[R].Shibaura Institute of Technology Campus Tokyo's:Technical Workshop 35th Kanto Branch Society of Civil Engineers,2008.
[6]Mayer,T.,Rochfort,et al.Environmental Characterization Of Surface Runoff From Three Highway Sites In Southern Ontario,Canada:2.Toxicology[J],2011,46(2):121-136.