铅污染原状土的动电修复试验  

Experimental Research of Electrokinetic Remediation of Undisturbed Soil Polluted by Pb^(2+)

作　　者：席永慧[1] 杨洋[2] 周光华[1] 

机构地区：[1]同济大学建筑工程系,上海200092 [2]上海建筑设计研究院有限公司,上海200041

出　　处：《贵州农业科学》2009年第4期101-104,共4页Guizhou Agricultural Sciences

基　　金：上海市城乡建设和交通委员会项目"上海城市污染(受损图)处置与修复关键技术研究"(重科2008-006);同济大学文远基金项目"污染土壤电动修复技术研究"

摘　　要：对铅污染的原状土壤在不同修复时间下的修复效果和采用极性交换技术的修复效果进行了试验,分析了试验过程中电流、电导率、pH的变化以及试验完成后土样中含水率、电导率、pH值和铅的分布,并对每个试验中铅的去除率进行了计算。结果表明:随着修复时间的增加污染物的去除率相应提高,采用极性交换技术,去除率明显提高。并对动电技术发展进行了展望,提出了建议。Electrokinetic remedied Pb-polluted undisturbed soil was studied in four experiments, which are under different remediation time and with polarity-reversal technology. The variation of the electrical current, pH and the electrical conductivity during the process of remediation as well as the water content, the electrical conductivity and the distribution of Pb^2＋ in soils after the remediation were analyzed. The removal efficiency of Pb^2＋ of all experiments was calculated. The results indicate that increasing the duration of the treatment improves the removal efficiency. Adopting the polarity-reversal technology could produce a high removal of Pb^2＋ . Prospects and suggestions for electrokinetic remediation technology are also presented in this paper.

关 键 词：动电修复 铅 原状土 极性交换 去除率 

分 类 号：X131.3[环境科学与工程—环境科学]