路面径流污染渗滤介质组合优化及净化机理分析  

Combination Forms Optimization and Purification Mechanism of Infiltration Media used in Pavement Runoff Pollution

作　　者：卢志萍 康爱红[1] 徐雪玲 娄可可 寇长江[1] LU Zhiping;KANG Aihong;XU Xueling;LOU Keke;KOU Changjiang(College of Civil Science and Engineering,Yangzhou University,Yangzhou 225127,China)

机构地区：[1]扬州大学建筑科学与工程学院,江苏扬州225127

出　　处：《材料科学与工程学报》2020年第3期477-481,共5页Journal of Materials Science and Engineering

基　　金：国家自然科学基金资助项目(51578481);江苏省江苏省研究生创新工程资助项目(KYCX17_1880)。

摘　　要：为确定适用于不同污染状况道路的渗滤介质组合形式,室内配置与扬州市次降雨径流污染物平均浓度(EMC)等浓度的污水水样,利用自制的过水模拟装置对6种典型渗滤介质的净化能力进行了测试和评价,并通过环境扫描电子显微镜(ESEM)、场发射扫描电镜(FESEM)对渗滤介质的微观结构进行了测试,分析其净化机理表明:渗滤介质主要通过介质内部孔隙吸附、介质间空隙截留两种方式降低径流雨水中污染物浓度,且不同渗滤介质对污染物的吸附/截留效果差异显著;采用模糊综合评价法能够量化不同净化材料组合对污染物的去除效果,最后给出了不同污染状况道路径流雨水的推荐渗滤介质组合形式。In order to determine the combination forms of infiltration media applicable to pavement under different pollution conditions,artificial rainwater samples were prepared in the laboratory whose concentration is the same as the event mean concentration(EMC)of rainfall occurred in Yangzhou.Then,purification ability tests were firstly conducted on six kinds of infiltration medium by using self-made simulating device.Environmental scanning electron microscope(ESEM)and field emission scanning electron microscopy(FESEM)were also employed to analyze the purification mechanism.Results indicate that the reduction of pollutant concentration by infiltration media mainly rely on pore adsorption and mechanical retention.There are big differences between the adsorption/retention abilities of different infiltration medium to pollutants.Fuzzy comprehensive evaluation method was introduced to quantify the removal efficiency of different combinations.And combinations of infiltration media suitable for different pollution characteristics are recommended.

关 键 词：径流污染 渗滤介质 材料组合 净化机理 

分 类 号：X52[环境科学与工程—环境工程]