安徽某退役电镀厂搬迁后土地污染与健康风险评估

Land Pollution and Health Risk Assessment After Relocation of a Decommissioned Electroplating Plant in Anhui Province

以安徽省中部地区某退役电镀厂遗留场地为研究对象,在场地设置10个土壤采样点进行土壤重金属污染情况调查分析,共获取土壤样本40份。采用内梅罗指数法和污染场地健康与环境风险评估软件HERA,对土壤中重金属污染种类、污染程度、污染源、健康风险进行研究。结果表明:该电镀厂的电镀作业、废水废渣处置操作导致重金属Ni、Cr、Cu、Zn渗入场地,造成遗留场地土壤污染,其中Cr污染最为严重,对人体的致癌风险尤其显著(>10-6),Ni、Cu、Zn存在一定程度的非致癌风险,该场地在二次开发利用前需进行重金属污染修复治理工作。

Taking a site left over from a decommissioned electroplating factory in the central region of Anhui Province as the research object,10 soil sampling points were set up to investigate and analyze the pollution of heavy metals in the soil,and 40 soil samples were obtained.Using the Nemero index method and Hera software,the pollution types,pollution levels,pollution sources and health risks of heavy metals in soil were studied.The results showed that the heavy metals Ni,Cr,Cu and Zn infiltrated into the site and polluted the soil of the remaining site,especially Cr pollution,which had a significant carcinogenic risk to human body(>10-6),and Ni,Cu and Zn had a certain non carcinogenic risk.Heavy metal pollution repair should be carried out before the secondary development and utilization of the site Rehabilitation work.