摘要
透水混凝土铺装在去除道路径流污染物方面具有显著效果,是海绵城市建设中"净化"功能的载体,其机理之一在于铺装材料对污染物具有吸附作用。通过试验研究了透水混凝土铺装常用材料对各典型污染物的吸附效果。结果表明,水泥、石英砂及碎石对COD、Cu、TP、TN均有吸附作用,其中水泥对道路径流污染物COD、Cu、TP、TN的最大吸附去除率分别为82%、99%、66%、75%,石英砂为29%、98%、56%、48%,碎石为15%、98%、66%、47%。综合比较,3种材料中水泥对污染物的吸附效果最好,3种材料对铜的吸附去除效果相对其他污染物为最高。本研究结果为透水混凝土铺装在海绵城市的建设过程中的应用提供了理论基础。
Permeable concrete pavement has significant effect on pollutant removal of road runoff, and one of the important reasons is that the pavement material has adsorptive capacity to the pollutants.It studied the adsorptive capacity of three materials commonly used in permeable concrete pavement.The results show that cement, silica sand and gravel have different adsorptive capacity for COD, Cu, TP and TN, and the adsorptive capacity of cement for road runoff pollutants is the highest.The maximum adsorptive removal rate for COD, Cu, TP and TN by cement was 82%, 99%, 66%, 82% respectively, 29%, 98%, 56%, 48% by silica sand and 15%, 98%, 66%, 47% by gravel.The adsorptive capacity for Cu by three kinds of adsorption medium is the highest in four pollutants.The results provides a theoretical basis for the application of permeable concrete pavement in the process of construction of sponge city.
出处
《混凝土》
CAS
北大核心
2016年第10期143-147,151,共6页
Concrete
基金
国家水体污染控制与治理科技重大专项(2010ZX07320-002)
关键词
透水混凝土铺装
径流污染物
吸附效果
permeable concrete pavement
runoff pollutant
absorptive efficiency
