铅锌冶炼重金属重污染土壤稳定化研究  

Experimental Studies on the Stabilization of Heavy Metal Soils Heavily Polluted by Lead and Zinc Smelting

作　　者：赵静[1] 李也 史昱翔 李蕾 ZHAO Jing;LI Ye;SHI Yu-xiang;LI Lei(College of Environmental Science and Engineering,Tongji University,Shanghai 200092,China)

机构地区：[1]同济大学环境科学与工程学院,上海200092

出　　处：《环境科技》2024年第4期8-13,20,共7页Environmental Science and Technology

基　　金：国家重点研发计划(2019YFC1805202).

摘　　要：针对部分铅锌冶炼场地遭受严重重金属污染的问题,采用基于铁的稳定化材料FeCl_(3)+CaCl_(2)+NaOH+Ca(OH)_(2),FeCl_(3)+CaCl_(2)+NaOH+Ca(OH)_(2)+Na_(2)S及FeCl_(3)+Na_(2)HPO_(4)进行修复。根据TCLP浸出法评估效果,选出最佳组合为FeCl_(3)+Na_(2)HP0_(4),该组合在3个场地中使Pd浸出浓度分别下降96%,63%,61%,显著减少重金属迁移。研究突显了合适材料的选择对有效土壤稳定化的重要性。Some lead and zinc smelting sites suffer from severe heavy metal pollution.In response,FeCl_(3)+CaCl_(2)+NaOH+Ca(OH)_(2),FeCl_(3)+CaCl_(2)+NaOH+Ca(OH)_(2)+Na_(2)S and FeCl_(3)+Na_(2)HP0_(4),iron-based stabilisation materials were used for remediation.The effectiveness was assessed by the TCLP leaching method,and FeCl_(3)+Na_(2)HP0_(4)was particularly recommended as the combination resulted in a 96%,63%,and 61%reduction in Pd leaching concentration in the three sites,respectively,significantly reducing heavy metal migration.This study highlights the importance of suitable material selection for effective soil stabilisation.

关 键 词：重污染土壤 重金属 铅锌冶炼 铁基材料 稳定化 

分 类 号：X5[环境科学与工程—环境工程]