多孔路面材料与厚度对地表径流的净化效能

发布时间：2018-08-13 14:21

【摘要】：针对地表径流通过透水沥青路面渗透后水质会产生变化的问题,设计了透水路面材料渗透装置,选取了能够表征路面地表径流水质的16项代表性指标,试验分析了透水沥青混合料、级配碎石和天然砂等3种多孔路面材料和厚度对地表径流污水的净化效能与机理.试验结果表明:多孔路面材料和厚度对地表径流中污染物的去除效果影响显著;天然砂对地表径流中TP,COD,Zn,BOD,PP和Cr~(6+)等污染物的去除效果良好,增加砂垫层厚度能够提升上述污染物的去除效率;级配碎石对地表径流中Pb,NH_4-N,AVO,COD和BOD等污染物具有良好去除效果;多孔沥青混合料对地表径流中NH_4-N,Pb和TP的过滤净化效果相对较好.
[Abstract]:Aiming at the problem that water quality will change after surface runoff permeates through permeable asphalt pavement, a permeable pavement material permeation device is designed, and 16 representative indexes which can represent surface runoff water quality are selected. Three kinds of porous pavement materials and thickness, such as permeable asphalt mixture, graded crushed stone and natural sand, have been tested and analyzed on the purification efficiency and mechanism of surface runoff sewage. The results show that the porous pavement material and thickness have a significant effect on the removal of pollutants in surface runoff, and the natural sand has a good effect on the removal of pollutants such as TPCOD, ZnBODN, PP and Cr ~ (6) in surface runoff. Increasing the thickness of sand cushion can improve the removal efficiency of above mentioned pollutants; graded crushed stone has a good removal effect on pollutants such as BOD and PBN NH _ 4-NH _ 4-AVOO _ 2 in surface runoff, while porous asphalt mixture has a relatively good filtration effect on NH _ 4-N _ 2O _ Pb and TP in surface runoff.
【作者单位】：长安大学特殊地区公路工程教育部重点实验室;长安大学建筑工程学院;长安大学材料科学与工程学院;
【基金】：国家自然科学基金资助项目(51608043) 交通运输部建设科技项目(2013318221150) 陕西省青年科技新星基金资助项目(2015KJXX-23) 陕西省建设科技计划项目(2015-K99)
【分类号】：U414

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