铬污染地下水的PRB反应介质筛选及修复试验  

Experiment on Selection of PRB Media and Remediation of Chromium Contaminated Groundwater

作　　者：杨维[1] 王立东[1] 徐丽[1] 杨军锋[1] 

机构地区：[1]沈阳建筑大学市政与环境工程学院,沈阳110168

出　　处：《吉林大学学报（地球科学版）》2008年第5期854-858,共5页Journal of Jilin University：Earth Science Edition

基　　金：辽宁省自然科学基金项目(20072012);建设部重点科技项目(2007-K4-24)

摘　　要：通过实验研究筛选出一种经济可行的用于修复Cr(Ⅵ)污染地下水的PRB反应介质。实验以Cr(Ⅵ)污染地下水为研究对象,选用MB、Fe0、粉煤灰和活性炭4种材料进行PRB介质筛选的静态实验,选取处理效果好且经济的MB作为PRB反应介质进行动态修复实验。结果表明:以MB作为PRB反应介质可以使Cr(Ⅵ)的质量浓度从0.50 mg/L降低到0.05 mg/L以下,达到地下水水质Ⅲ类标准;且MB具有吸附量大、固液分离容易、无解吸、无二次污染等优点。以MB作为PRB反应介质修复Cr(Ⅵ)污染的地下水是可行的。The selection of the economical and feasible reactive media was studied on in-situ remediation of Cr（Ⅵ） contaminated groundwater in Permeable Reactive Barrier technology through experiment.Four kinds of matrials,viz.the modified bentonite（MB）,Fe^0,the fly ash and the activated carbon were selected for PRB media testing.The effective and economical modified bentonite was carried on the dynamic experiment as the PRB media.The experimental results indicate that the Cr（Ⅵ） concentration decreases from 0.50 mg/L to 0.05 mg/L which is less than the national groundwater quality Ⅲ standard.Simultaneously,the MB shows the large adsorption quantity,easier liquid-solid separation,no desorption and secondary pollution.It is feasible that the modified bentonite as the PRB media is to remedy the Cr（Ⅵ） contaminated groundwater.

关 键 词：筛选 可渗透反应墙 改性膨润土 修复 

分 类 号：P641.1[天文地球—地质矿产勘探]