化工环保2026，Vol.46Issue(2)：228-233,6.DOI:10.3969/j.issn.1006-1878.2026.02.011
磁选强化淋洗技术去除土壤中的钒
Vanadium removal from soil by magnetic separation enhanced leaching technology
摘要
Abstract
Taking the vanadium-contaminated soil from a decommissioned iron and steel plant as the research object,a novel remediation technology for vanadium-contaminated soil was developed,namely,magnetic separation enhanced soil leaching remediation technology.The removal mechanism of heavy metal vanadium was investigated from the aspects of magnetic adsorption strength,moisture content,and speciation of heavy metals.The experimental results show that the vanadium in the soil is mainly enriched in the soil with particle size＜2.00 mm.The vanadium removal rate of single leaching remediation technology for this soil is less than 20%.The application of magnetic separation prior to leaching remediation technology can enhance the vanadium removal efficiency,increasing the vanadium removal rate of high-concentration contaminated soil from 20.2%to 88.4%.Furthermore,the proportion of Fe-Mn oxide-bound vanadium in soil can be reduced from 42.6%to 24.6%.It indicates that the technology effectively decreases the proportion of stable heavy metals in soil that are difficult to leach and cuts down the remediation cost by more than 40%.关键词
钒污染土壤/磁选技术/土壤淋洗技术/铁锰氧化物结合态Key words
vanadium-contaminated soil/magnetic separation technology/soil leaching technology/Fe-Mn oxide-bound state分类
资源环境引用本文复制引用
寇存辉,刘健,杨成良,李丁,高越..磁选强化淋洗技术去除土壤中的钒[J].化工环保,2026,46(2):228-233,6.基金项目
国家重点研发计划项目(2022YFC3702405) （2022YFC3702405）
天津市领军培育企业重大创新项目(24YDPYSN00100). （24YDPYSN00100）
