云南某铬渣污染场地土壤修复工程实例

该工程一期对云南省牟定县境内某关停企业原址内受六价铬及砷污染土壤进行了修复治理，修复面积约11 680 m2，土方量共计2.62万m3。工程采用异位还原稳定化对重金属污染土壤进行了无害化处理，所用还原稳定化药剂为某环境技术公司自主研发的硫系和铁系稳定化药剂。无害化处理后的近3万m3土壤采用安全填埋进行处置。

Soil remediation engineering instances of some chromium residue contaminated sites in Yunnan

This first phase of this project has repaired the soil contaminated by hexavalent chromium and arsenic in a shut down enterprise in Mouding county, Yunnan Province. The area of this repair and treatment is about 11 680 m2 and the total volume of soil is about 26 200 m3.In the engineering project, ex-situ reduction stabilization technology was adopted to remediate the contaminated soils in a harmless way by use of the sulphur-based and iron-based reduction stabilization reagents independently developed by the environmental technology company itself. After the remediation, about 30 thousand cubic meters of soils were disposed by safe landfill.