淋洗法处理铬污染土壤研究进展  

Research Progress on Treatment of Chromium Contaminated Soil by Leaching Method

作　　者：郭伯厚 陈睿颉 张基尧 凌晓杰 王娟 GUO Bohou;CHEN Ruijie;ZHANG Jiyao;LING Xiaojie;WANG Juan(College of Biological,Chemical Science and Engineering,Jiaxing University,Jiaxing 314033,China)

机构地区：[1]嘉兴大学生物与化学工程学院,浙江嘉兴314033

出　　处：《绿色矿冶》2024年第2期66-72,共7页Sustainable Mining and Metallurgy

基　　金：嘉兴大学大学生科研训练计划(SRT)项目(8517231461)。

摘　　要：重金属铬进入土壤后不仅会污染地下水,还会在植物体内累积进而危害人体健康。淋洗技术具有操作简单、节约成本、效果显著等优点,是较为常用的铬污染土壤处理方法。本文整理和归纳了目前有关铬污染土壤淋洗的研究,介绍各种淋洗剂的淋洗原理、应用及存在问题,分析影响淋洗效果的因素,如土壤性质、淋洗剂性质、淋洗液pH值、淋洗时间、液固比及增强方式等,并针对铬污染土壤淋洗存在的黏性土壤中铬淋洗效率不高、淋洗后土壤的生态风险评价不足、淋洗废水处理和资源化不足等问题,提出相应建议。Heavy metal chromium not only pollutes groundwater after entering the soil,but also accumulates in plants and endangers human health.Leaching technology has the advantages of simple operation,cost saving and remarkable effect.It is a commonly used treatment method for chromium contaminated soil.This paper summarized the current research on the leaching of chromium-contaminated soil,introduced the leaching principle,application and existing problems of various eluents,and analyzed the factors affecting the leaching effect,such as soil properties,eluent properties,eluent pH value,leaching time,liquid-solid ratio and enhancement methods.It was pointed out that the leaching of chromium-contaminated soil has problems such as low efficiency of chromium leaching in cohesive soil,insufficient ecological risk assessment of soil after leaching,and insufficient treatment and resource utilization of leaching wastewater.In the future,it is necessary to strengthen the research on these problems.

关 键 词：铬污染 土壤淋洗 淋洗剂种类 影响因素 

分 类 号：X53[环境科学与工程—环境工程]