华东某市污染场地土壤修复工程方案设计

Design of Soil Remediation Project for a Contaminated Site in a City in East China

选取华东某市重金属和半挥发性有机物污染场地作为研究对象,建立污染场地概念模型,选择“异位高级化学氧化+异位淋洗组合工艺”进行修复,修复后合格土壤进行原位回填处置。具体方案选取双氧水或过硫酸盐作为氧化剂修复有机污染土壤;并对重金属污染土壤进行异位淋洗小试试验,确定最佳土壤淋洗参数。本项目的整体方案设计可为此类污染土壤的修复方案设计提供参考。

A heavy metal and semi-volatile organic compound contaminated site in a city of East China was selected as the research object,a conceptual model of the contaminated site was established,and the“ex-situ advanced chemical oxidation+ex-situ leaching combined process”was selected for remediation,and the qualified soil was backfilled in situ after remediation.Hydrogen peroxide or persulfate was selected as oxidant to repair the organic contaminated soil;and the ex-situ leaching test of heavy metal contaminated soil was carried out to determine the best soil leaching parameters.The overall scheme design of this project can provide reference for the remediation scheme design of this kind of contaminated soil.