腐植酸强化电动修复铅锌矿区复合重金属污染农田土的实验研究  

Research on Humic Acid Enhanced Electrokinetic Remediation of Multi-metals Contaminated Farmland Soil in the Lead/Zinc Mining Areas

作　　者：张宇[1] 王宜莹 宋明芮[1] 林圆圆[1] 张秋[1] 李妍[1] 

机构地区：[1]南华大学环境保护与安全工程学院,湖南衡阳421001

出　　处：《广东化工》2016年第9期19-21,共3页Guangdong Chemical Industry

基　　金：2013湖南省大学生研究性学习和创新性实验计划项目(0814-000200004);湖南省教育厅科学研究项目(13C814)

摘　　要：电动修复实验中,通过加入络合剂腐殖酸,提高对水口山铅锌矿区农田土壤中铅、锌、镉、铜的去除效率。实验结果表明,当修复电压达到17.6 V·cm^(-1)的时候,修复时间为7天的时候,铅、镉、铜、锌的去除效率分别达到65.04%、94.92%、89.88%、91.05%。电动修复后,土壤中可交换态和碳酸盐结合态的Cd含量大大降低,减少了Cd的环境毒性影响。Humic acid enhanced electrokinetic remediation of multi-metals contaminated farmland soil in Shuikoushan lead/zinc mining areas as a chelating agent was studied to improve the removal efficient of lead, zinc, and cadmium, copper. Experiment results showed that when the remediation voltage and time was 17.6 V·cm-1 and 7 days, the removal efficiency of Pb, Cd, Cu, Zn was 65.04 %, 94.92 %, 89.88 %, 91.05 % respectively, After the experiment, the exchangeable and carbonate form content of Cd were greatly decreased and the environmental toxic effects were reduced.

关 键 词：电动法 重金属 腐殖酸 

分 类 号：X53[环境科学与工程—环境工程]