透水混凝土铺装基层3种骨料对典型径流污染物吸附效果比较  

Adsorption Effect Comparison among Three Kind of Aggregates for Typical Runoff Pollutants by Pervious Concrete Pavement Base Layer

作　　者：王俊岭[1] 魏江涛[1] 王雪明[2] 张雅君[1] 冯萃敏[1] 李俊奇[1] WANG Jun-ling WEI Jiang-tao WANG Xue-ming ZHANG Ya-jun FENG Cui-min LI Jun-qi(Key Laboratory of Urban Stormwater System and Water Environment, Ministry of Education,Beijing University of Civil Engineering and Architecture1 , Beijing 100044, P. R. China Beijing Yanqing Municipal Commission of Urban Planning2 , Beijing 102100 , P. R. China)

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：《科学技术与工程》2017年第3期303-309,共7页Science Technology and Engineering

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

摘　　要：为提高透水混凝土铺装基层对雨水径流污染物的削减作用,通过优选骨料的方法对透水混凝土铺装基层进行功能强化研究,采用静态吸附等温试验对3种骨料开展了试验。研究表明,采用沸石骨料对雨水径流污染物削减效果最好,沸石对径流主要污染物COD、TP、TN、Cu的理论饱和吸附量分别为8.612、1.848、3.932、7.032 mg/g。沸石和陶粒相较于砾石对径流污染物COD、TP、Cu的吸附能力分别提高了51%和14%、61%和34%、87%和58%,沸石对于TN的吸附远高于陶粒和砾石,所以,对骨料进行优选后可以提高基层的除污能力,为透水混凝土铺装的扩大应用提供创新方法,同时为海绵城市的建设提供技术支持。To improve the pervious concrete pavement base layer effect for reducing runoff contaminants,the function strengthen research of the pervious concrete pavement base layer was conducted by selecting the base layer aggregates. Static adsorption isotherm experiments was used to select the optimum from three aggregates. The result has shown that zeolite aggregate has the best effect on the reduction of runoff contaminants. The saturated adsorption amount of the zeolite for major runoff pollutants COD,TP,TN and Cu is 8. 612,1. 848,3. 932,7. 032 mg / g respectively. Compared with gravel,the adsorption capacity to the runoff pollutants COD,TP and Cu of zeolite increased by 51%,61% and 87% respectively and ceramic increased by 14%,34% and 58% respectively. The adsorption capacity of zeolite for TN is much higher than ceramic and gravel. Screening aggregate can improve decontamination capacity of pervious concrete pavement base layer and provides innovative ways to expand the use of pervious concrete pavement. Moreover,it provides technical support for the construction of the sponge city.

关 键 词：透水混凝土铺装 基层 优选 吸附 

分 类 号：TU521[建筑科学—建筑技术科学]