沸石在城市垃圾填埋场衬里中的应用  

Application of Zeolites in Municipal Landfill Liner

作　　者：郭晓东[1] 赵勇胜[1] 董军[1] 

机构地区：[1]吉林大学环境与资源学院,长春130026

出　　处：《非金属矿》2005年第5期48-49,60,共3页Non-Metallic Mines

基　　金：国家自然科学基金(50478006);国土资源部水环境和水问题重点实验室资助项目

摘　　要：采用沸石改性天然黏土以增强其对污染物的衰减能力,研究了沸石含量变化对黏土防渗性能的影响。试验结果表明:复合土的渗透系数都达到10-8cm/s;对COD、铵和硝酸根等污染物的去除率有明显提高;含5.66%沸石为最佳配比。用改性复合土作为垃圾填埋场衬里是可行的。In order to enhance the attenuation ability of natural clay for pollutants, zeolites were used as denaturant to modify natural clay. Influences of the zeolites percentage on natural clay＇s performance were studied. Experimental results indicated that the permeability of the compound soil was up to 10^- 8cm/s; the attenuation efficiencies of COD, ammonia ion and nitrate increased obviously; the compound soil which contained 5.66% zeolite was the best one. It is feasible that the modified natural clay was used as liner material.

关 键 词：沸石 天然黏土 复合土 衰减作用 填埋场衬里 城市垃圾填埋场 沸石 衬里 应用 渗透系数 防渗性能 含量变化 最佳配比 污染物 

分 类 号：X705[环境科学与工程—环境工程] TQ424.25[化学工程]