上海市某工业地块土壤重金属砷铅复合污染修复效果评估

Remediation effectiveness evaluation of heavy metal lead and arsenic in soil for a contaminated site in Shanghai

经场地调查和人体健康评估表明上海市某工业地块受铅砷复合污染,污染物浓度超过了人体健康风险可接受水平需要修复,修复技术采用原地异位稳定化技术,修复药剂为磷酸盐/亚铁盐复配粘土矿物稳定剂,实际修复方量为2 710m^3,依据《污染地块风险管控与土壤修复效果评估技术导则》(HJ25.5-2018)对整个修复过程进行评估、现场采样监测,土壤监测结果符合评价标准,修复工程效果评估合格。

An industrial site in Shanghai was contaminated with lead and arsenic and the concentrations of contaminants showed to exceed acceptable levels of human health risk by environmental site investigation and human health risk assessment.Ex-situ solidification/stabilization technology was adopted to repair the contaminated soil,phosphate/ferrous salt compound clay mineral stabilizer was used as a remediation agent.The actual amount of repair of this project was 2710 m^3.The remediation process was evaluated and monitored according to the technical guidelines for risk control and soil remediation effect assessment of contaminated plots(HJ 25.5-2018).The test results conform to the remediation target value,the practice indicates the contaminated soil remediation has good effect and reaches the remediation goals.