六安市某六价铬污染场地修复工程实践  

Practice of remediation project for a hexavalent chromium contaminated site in Liuan City

作　　者：张佩佩 张豆 王福友 李晓雪 凃啸宇 雷鸣 ZHANG Pei-pei;ZHANG Dou;WANG Fu-you;LI Xiao-xue;TU Xiao-yu;LEI Ming

机构地区：[1]安徽省通源环境节能股份有限公司,安徽合肥230031

出　　处：《节能》2022年第9期64-67,共4页Energy Conservation

摘　　要：以污染地块修复项目为依托,综合场地特性和污染特征,进行修复技术筛选,确定以“化学还原稳定化+固化技术”对Cr(Ⅵ)污染土壤进行修复,对总铬污染土壤进行风险管控;通过小试和中试试验,获得最佳修复药剂组成和添加比例。结果表明:六价铬污染土壤经化学还原稳定化+固化技术处理,土壤样品中Cr(Ⅵ)的浸出浓度低于修复目标值,达到修复方案要求,为污染土壤修复工程的有效实施提供参考。Relying on remediation project of a contaminated land, the remediation technology was screened based on site characteristics and pollution characteristics, and the ’chemical reduction stabilization+solidification technology’ was determined to repair the Cr( Ⅵ) contaminated soil, and the risk control of the total chromium contaminated soil was carried out. Through small-scale and pilot-scale tests, the optimal composition and addition ratio of repairing agents were obtained. The results show that after the hexavalent chromium polluted soil was treated by chemical reduction stabilization+solidification technology, the leaching concentration of Cr(Ⅵ) in soil samples is lower than the remediation target value, which met the requirements of the remediation plan, and provide a reference for the implementation of the contaminated soil remediation project.

关 键 词：Cr(Ⅵ)污染 化学还原稳定化 固化/稳定化 风险管控 

分 类 号：X53[环境科学与工程—环境工程]