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

赵静 ¹李也 ¹史昱翔 ¹李蕾¹

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作者信息

1. 同济大学环境科学与工程学院,上海 200092
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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FeCl3+CaCl2+NaOH+Ca(OH)2,FeCl3+CaCl2+NaOH+Ca(OH)2+Na2S及FeCl3+Na2HPO4 进行修复.根据TCLP 浸出法评估效果,选出最佳组合为FeCl3+Na2HPO4,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.

Abstract

Some lead and zinc smelting sites suffer from severe heavy metal pollution.In response,FeCl3+CaCl2+NaOH+Ca(OH)2,FeCl3+CaCl2+NaOH+Ca(OH)2+Na2S and FeCl3+Na2HPO4,iron-based stabilisation materials were used for remediation.The effectiveness was assessed by the TCLP leaching method,and FeCl3+Na2HPO4 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

Key words

Heavily contaminated soil/Heavy metals/Lead and zinc smelting/Iron-based materials/Stabilization

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基金项目

国家重点研发计划(2019YFC1805202)

出版年

2024

环境科技

徐州市环境监测中心站江苏省环境科学研究院

环境科技

CSTPCD

影响因子：0.969

ISSN：1674-4829

参考文献量17

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