铅污染土壤的动电修复研究  

Electrokinetic Remediation of Pb-polluted Soil

作　　者：席永慧[1] 周光华[1] 杨洋[2] 

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1期165-168,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"(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：通过不同修复时间和不同含水率试验,分别考察了动电修复技术在不同修复时间和不同含水率情况下对铅污染土壤的修复效果,试验过程中监测两极电极池中的pH值以及土样中电流的变化;试验结束后,测定铅在土壤中的迁移分布和土壤的含水率,并计算了每组试验中铅的去除率。结果表明:修复时间增加,污染物的去除率也相应提高,并最终趋于一个极值;含水率对去除率也有重要影响,含水率越大修复效果越显著。并对动电技术的研究发展进行了展望。Electrokinetic remedied Pb-polluted soil is studied in two groups of experiments, which are under different remediation time and different water content. The variation of the pH value in both sides and the current flow in soil were measured during the experiment, and the movement distribution of lead and the water content in soil was analyzed after the experiment. The removal rate of Pb2＋ of each group of experiment was calculated. The results indicate that the removal rate increase coincide with the remediation time, and come to an extreme value at last. Water content is also a significant factor which influences the remedy efficiency. Prospects for electrokinetie remediation technology are also presented in this paper.

关 键 词：动电修复 铅污染土壤 含水率 去除率 

分 类 号：X53[环境科学与工程—环境工程]