| 膨润土修复矿区污染土壤的初探 |
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| 引用本文： | 谢正苗,俞天明,姜军涛.膨润土修复矿区污染土壤的初探[J].科技通报,2009,25(1). |
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| 作者姓名： | 谢正苗 俞天明 姜军涛 |
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| 作者单位： | [1]杭州电子科技大学环境科学与工程系,杭州310018 [2]浙江大学环境与资源学院,杭州310029 |
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| 基金项目： | 浙江省科技计划项目(2008C13009) |
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| 摘 要： | 绍兴某矿区土壤受重金属Pb和Zn的复合污染。本文研究了膨润土修复矿区污染土壤过程中不同pH、膨润土对污染土壤修复效果的影响。结果表明：pH、膨润土与污染土壤比是影响膨润土对Pb和Zn的吸附的主要因素，当pH=5．0时，吸附效果最佳。当pH=5．0，膨润土与污染土壤比=1：10时，平衡液中Pb和Zn的浓度比不添加膨润土分别降低44％和58％。膨润土与污染土壤比=1：5时修复效果最好。因此，在pH在5，膨润土与污染土壤比=1：5时，可以达到最好的修复效果，膨润土可以用于修复被Pb和Zn污染的土壤。
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| 关 键 词： | 铅 锌 尾矿 土壤污染 修复 |
A Preliminary Study on Remediation of a Mining Tailings Contaminated Soil Using Natural Bentonite |
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| XIE Zhengmiao,YU Tianming,JIANG Juntao.A Preliminary Study on Remediation of a Mining Tailings Contaminated Soil Using Natural Bentonite[J].Bulletin of Science and Technology,2009,25(1). |
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| Authors: | XIE Zhengmiao YU Tianming JIANG Juntao |
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| Institution: | 1.Department of Enviromental Science and Engineering;Hangzhou Dianzi University;Hangzhou 310018;China;2.College of Enviromental & Resource Science;Zhejiang University;Hangzhou 310029;China |
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| Abstract: | Laboratory experiments were conducted to study the remediation of a Pb /Zn mining tailings contaminated soil collected from Shaoxing,China using natural bentonite.The results showed that the release of Pb and Zn from the contaminated soil was significantly related to the pH value,and the best pH value was 5.0.When the pH value was 5.0,the ratio of bentonite to the contaminated soil was 0.1,the observed concentrations of Pb and Zn in solution for the bentonite treatment were 44% and 58% lower than the contro... |
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| Keywords: | lead zinc mining tailings contaminated soil remediation |
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