污泥基生态混凝土中重金属的浸出研究_《混凝土与水泥制品》杂志社

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发布时间：2020-01-06 00:00:00

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污泥基生态混凝土中重金属的浸出研究

Research on Leaching of Heavy Metals from Sludge Based Ecological Concrete

２０17年第5期

污泥；生态混凝土；重金属；浸出

Sludge; Ecological concrete; Heavy metal; Leach

２０17年第5期

1000-4637（2017）05-88-05

国家自然科学基金资助项目（41102212）；四川省教育厅青年基金资助项目（11zb105）；西南科技大学大学生创新基金资助项目（CX16-034）。

王可1，代群威1,2

1.西南科技大学环境与资源学院，绵阳621010；2.固体废物处理与资源化教育部重点实验室，绵阳621010）

王可1，代群威1,2

王可,代群威.污泥基生态混凝土中重金属的浸出研究[J].混凝土与水泥制品,2017(5):88-92.

WANG K, DAI Q W.Research on Leaching of Heavy Metals from Sludge Based Ecological Concrete[J].China Concrete and Cement Products,2017(5):88-92.

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1000

摘要：以污泥为基料制备的生态混凝土为对象，研究了去离子水、硫酸-硝酸溶液和醋酸溶液三种浸取剂在浸取混凝土过程中重金属的浸出情况和液相pH值变化特性。结果表明，重金属铅（Pb）、铬（Cr）、镉（Cd）、铜（Cu）和锌（Zn）的浸出量随着混凝土粒径的减小而逐渐增加，砷（As）的浸出量随着混凝土粒径的减小略有减小；液相pH值随着时间的增加而增加，浸取剂为醋酸溶液时，平衡后液相pH值最小；浸取剂的种类对混凝土中重金属浸出结果影响很大，3种浸取剂条件下重金属的浸出率大小为：醋酸溶液＞硫酸-硝酸溶液＞去离子水，但重金属的浸出浓度都远低于GB 5085.3—2007《危险废物鉴别标准浸出毒性鉴别》规定的限值，重金属固化效果很好。 Abstract: Using the ecological concrete prepared with sludge as object, three kinds of leaching agent such as deionized water, sulphuric acid-nitric acid solution and acetic acid solution leaching of heavy metals in the process of concrete circumstance and pH value change characteristics were investigated. The result showed that Pb, Cr, Cd, Cu and Zn increased gradually with the reduction of the particle size, while As was slightly decreased with the decrease of the particle size. pH value increased gradually as time goes on. The minimum pH value of liquid phase was got after equilibrium under acetic acid solution conditions. The types of leaching agent have a great influence on leaching of heavy metals in the concrete, and the leaching ratio of every heavy metal showed an tendency: acetic acid solution＞sulphuric acid-nitric acid solution＞deionized water. As a consequence, the performance of solidification for heavy metals is well-behaved，and the leaching concentration of heavy metals from concrete is lower than that of the GB 5085.3—2007.

英文名 : Research on Leaching of Heavy Metals from Sludge Based Ecological Concrete

刊期 : ２０17年第5期

关键词 : 污泥；生态混凝土；重金属；浸出

Key words : Sludge; Ecological concrete; Heavy metal; Leach

刊期 : ２０17年第5期

DOI :

文章编号 : 1000-4637（2017）05-88-05

基金项目 : 国家自然科学基金资助项目（41102212）；四川省教育厅青年基金资助项目（11zb105）；西南科技大学大学生创新基金资助项目（CX16-034）。

作者 : 王可1，代群威1,2

单位 : 1.西南科技大学环境与资源学院，绵阳621010；2.固体废物处理与资源化教育部重点实验室，绵阳621010）

王可1，代群威1,2

王可,代群威.污泥基生态混凝土中重金属的浸出研究[J].混凝土与水泥制品,2017(5):88-92.

WANG K, DAI Q W.Research on Leaching of Heavy Metals from Sludge Based Ecological Concrete[J].China Concrete and Cement Products,2017(5):88-92.

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摘要

参数

结论

参考文献

引用本文

Abstract: Using the ecological concrete prepared with sludge as object, three kinds of leaching agent such as deionized water, sulphuric acid-nitric acid solution and acetic acid solution leaching of heavy metals in the process of concrete circumstance and pH value change characteristics were investigated. The result showed that Pb, Cr, Cd, Cu and Zn increased gradually with the reduction of the particle size, while As was slightly decreased with the decrease of the particle size. pH value increased gradually as time goes on. The minimum pH value of liquid phase was got after equilibrium under acetic acid solution conditions. The types of leaching agent have a great influence on leaching of heavy metals in the concrete, and the leaching ratio of every heavy metal showed an tendency: acetic acid solution＞sulphuric acid-nitric acid solution＞deionized water. As a consequence, the performance of solidification for heavy metals is well-behaved，and the leaching concentration of heavy metals from concrete is lower than that of the GB 5085.3—2007.

关键词:

污泥；生态混凝土；重金属；浸出

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污泥基生态混凝土中重金属的浸出研究

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