垃圾填埋场防渗浆材吸附阻滞作用的研究  

Research of Adsorption Retardation Effect on Anti-Seepage Grouting for Landfill Site

作　　者：代国忠[1] 李文虎[1] 张亚兴[1] 陈飞[1] 史贵才[1] 

机构地区：[1]常州工学院常州市建设工程结构与材料性能研究重点实验室,江苏常州213002

出　　处：《土木建筑与环境工程》2013年第S2期36-39,共4页Journal of Civil,Architectural & Environment Engineering

基　　金：江苏省自然科学基金项目(BK2012592)资助

摘　　要：通过室内吸附阻滞性能实验、重金属污染物运移数学模型建立等方法进行了防渗浆材固结体的吸附阻滞作用研究,以合理确定隔离墙的厚度及设计使用年限。采用黏土基浆材固结体制作的隔离墙具有良好吸附阻滞性能,对磷、铵态氮等无机物阻滞率在98%以上,对CODCr、BOD5阻滞率在86.09%以上,对Hg、As、Pb、Cd等重金属离子均有很好的阻滞作用,阻滞率均在98%以上。黏土基浆材通过渗滤沉积作用和吸附滞留作用,实现了对垃圾填埋场渗滤液中污染物阻滞能力的提高。黏土基防渗浆材隔离墙对垃圾填埋场渗滤液等污染物的阻滞作用具有时效性,保证一定的隔离墙厚度(一般B≥60cm)可确保对渗滤液污染物的吸附阻滞效果。Through methods of indoor adsorption retardation experiments,established mathematical model of heavy metal pollutants transport,effect of adsorption retardation have been study on the grouting concretion body,so as to reasonable determine the thickness of the wall and design use fixed number of year.The isolation wall made in the clay base grouting consolidation system,has good adsorption retardation,block rate reach upper 98% to NH4-N and phosphorus,block rate reach upper 86.09% to CODCr,BOD5,block rate reach upper 98% to Hg,Pb and other heavy metal ions.Through the infiltration sedimentation and adsorption fixation of clay base slurry material,the retardation capability of it is improved for pollutants of landfill site leachate.Adsorption retardation effect of the isolation wall made in the clay base impervious grouting has timeliness to leachate pollutants for landfill site,to guarantee a certain wall thickness(generally B≥60cm)can ensures blocking effect to it.

关 键 词：垃圾填埋场 渗滤液 隔离墙 运移数学模型 吸附阻滞性 

分 类 号：X705[环境科学与工程—环境工程]