改性基层透水混凝土铺装路面对污染物的去除试验研究  

Experiment on the pollutants reduction of the base-modified permeable concrete pavement

作　　者：王俊岭[1] 徐怡[1] 王雪明[2] 张雅君[1] 冯萃敏[1] 李俊奇[1] 

机构地区：[1]北京建筑大学城市雨水系统与水环境省部共建教育部重点实验室,北京100044 [2]北京市规划委员会延庆分局,北京102100

出　　处：《混凝土》2017年第5期153-157,共5页Concrete

基　　金：国家水体污染控制与治理科技重大专项(2010ZX07320-002)

摘　　要：通过使用人工模拟降雨装置和透水混凝土铺装路面,试验研究了透水混凝土铺装改性基层路面对径流污染物的削减情况。结果表明:在不同重现期下基层通过掺入膨润土并以沸石作为骨料后对COD、TP、TN、Cu、Zn、Pb的去除率分别为76.7%~86%、72.2%~84.1%、6%~7%、79%~82%、84%~85.5%、91%~93.8%,且随着重现期的增加,净化效果均减弱。在5年重现期下,改性基层透水混凝土铺装对径流污染物COD、TP、TN、Cu、Zn、Pb的削减效率较普通透水混凝土铺装分别提高了10%、9.5%、6%、13%、16.5%、20.6%。据分析,膨润土和沸石通过吸附作用、阳离子交换等官能团置换反应提升了对径流污染物的削减效果,为该种改性基层透水混凝土铺装路面的应用提供了理论依据。Based on the artificial simulator of rainfall and two devices of permeable concrete pavements,the reduction experiments of road runoff pollutants through base-modified permeable concrete pavement were studied.The results showed that under different rainfall return period,the removal rates of COD,TP,TN,Cu,Zn and Pb were as follows：76.7%~86%,72.2%~84.1%,6%~7%,79%~82%,84% ~85.5%,91% ~93.8% by the base-modified permeable concrete pavement using bentonite as additive and zeolite as aggregate.And with the increase of the return period,the purification effect was weakened.Under the rainfall return period of 5 years,compared to the ordinary permeable concrete pavement,the reduction rates of COD,TP,TN,Cu,Zn and Pb by the base-modified permeable concrete pavement were increased by 10%,9.5%,6%,13%,16.5% and 20.6%,respectively.According to the analysis,bentonite and zeolite had better effect on reducing runoff pollutants by adsorption,cation exchange and functional groups exchange.It provides a theoretical basis for the application of the base-modified permeable concrete pavement.

关 键 词：透水铺装基层 改性 径流污染物 去除机理 

分 类 号：TU528.01[建筑科学—建筑技术科学]