异位淋洗修复工艺研究进展

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摘 要：物理筛分、化学提取、物理化学联合应用等3种典型异位淋洗修复工艺由采矿与选矿工业发展而来。该文阐述了物理筛分、化学提取、物理化学联合工艺的应用原理，总结了物理化学联合工艺的基本流程路线及业内应用情况，分析了上述工艺的适用条件和特性，并提出了几点建议，为异位淋洗技术研究及工艺筛选提供参考。

关键词：物理筛分;化学提取;联合应用;工艺对比;研究进展

中图分类号 TQ423 文献标识码 A 文章编号 1007-7731（2022）03-0195-04

Abstract： Three typical ex-situ leaching remediation processes， including physical screening， chemical extraction， and combined application of physical chemistry， were developed from the mining and mineral processing industries. This article elaborates the application principles， applicable conditions， and characteristics of the physical screening， chemical extraction， and physical and chemical combined processes in detail， and focuses on the basic process routes and industry applications of the physical and chemical combined processes. Finally， combined with the introduction of the application characteristics of the above process， a summary and suggestion are made to provide guidance and reference for the research of ectopic leaching technology and process screening.

Key words： Physical sieving; Chemical extraction; Combined application; Process comparison; Research progress

根據2014年环境保护部和国土资源部发布的《全国土壤污染状况调查公报》显示，全国土壤环境总体状况不容乐观，无机污染与有机污染并存，从污染分布情况看，南方土壤污染重于北方，其中尤其以镉、汞、砷、铜、铅、铬、锌、镍等重金属污染类型为主[1]。（剩余6176字）