化学淋洗法修复土壤重金属污染效果的研究——以衡阳市水口山周边为例  

The Research on the Effect of Chemical Leaching Method in Repairing Heavy Metal Contaminated soil:Take Shuikoushan in Hengyang as an Example

作　　者：谭紫云 陈勇[1] 卢婷 程小娟 肖新生[2] 李文艺 Tan Ziyun;Chen Yong;Lu Ting;Cheng Xiaojuan;Xiao Xinsheng;Li Wenyi(Hengyang Normal University,Hengyang 421008,China;Hunan University of Science and Engineering,Yongzhou 425000,China)

机构地区：[1]衡阳师范学院,湖南衡阳421008 [2]湖南科技学院,湖南永州425000

出　　处：《广东化工》2025年第1期133-137,共5页Guangdong Chemical Industry

基　　金：功能金属有机化合物湖南省重点实验室开放基金项目(2023HSKFJJ005)。

摘　　要：本文针对衡阳市水口山地区周边土壤进行重金属污染修复,以化学淋洗法对土壤的修复效果展开研究。衡阳市水口山地区周边土壤中的重金属主要为Cd、Zn、Cu、Pb、As等。利用EDTA、柠檬酸、草酸、酒石酸和FeCl_(3)作为淋洗剂,探讨淋洗剂浓度、淋洗时间、单一淋洗剂与复合淋洗剂对土壤重金属污染的修复效果。最终结果表明:10 h~13 h五种淋洗剂对Pb、Zn、Cu、Cd重金属去除率较大,0.1mol/L的浓度下EDTA单一淋洗剂的去除率最高。从重金属的去除率来看,FeCl_(3)∶柠檬酸∶酒石酸=2∶2∶1时,修复效果较好,此时对土壤中Pb、Zn、Cu、Cd重金属去除率分别76.01%、64.57%、96.9%、93.2%。In this paper,the remediation of heavy metal pollution in the surrounding soil of Hengyang Shuikoushan area was studied by chemical leaching method.The heavy metals in soil around Shuikoushan area of Hengyang are mainly Cd,Zn,Cu,Pb,As,etc.Using EDTA,citric acid,oxalic acid,tartaric acid and FeCl_(3) as shower agents,we explored the repair effect of shower agent concentration and shower time,single and compound lotion on land heavy metal pollution.The results showed that the removal rate of Pb,Zn,Cd,Cu was higher in 10 h~13 h,and the removal rate of EDTA was the highest in 0.1 mol/L.According to the removal rate of heavy metals,when FeCl_(3)∶citric acid∶tartaric acid=2∶2∶1,the remediation effect is better.At this time,the removal rate of Pb,Zn,Cu and Cd in soil is 76.01%,64.57%,96.9%,93.2%respectively.

关 键 词：土壤重金属污染 化学淋洗 修复效果 

分 类 号：X53[环境科学与工程—环境工程]