基于风险评估的陶粒砌块中重金属含量限值研究

杨延梅; 王黎阳; 杨玉飞; 胡兰; 黄启飞

doi:10.12153/j.issn.1674-991X.20190190

基于风险评估的陶粒砌块中重金属含量限值研究

doi: 10.12153/j.issn.1674-991X.20190190

杨延梅¹,
王黎阳^1,2,
杨玉飞^2,*, ,,
胡兰³,
黄启飞²

^1. 重庆交通大学河海学院
^2. 中国环境科学研究院固体废物污染控制技术研究所
^3. 昱源宁海环保科技股份有限公司

详细信息

作者简介:
杨延梅(1975—),女,教授,博士,主要研究方向为固体废物处理处置与资源化利用,cqyymei@163.com

通讯作者:
杨玉飞 E-mail: cqyyf@163.com

中图分类号: X506
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出版历程
- 收稿日期: 2019-11-13
- 刊出日期: 2020-05-20

Research on limits of heavy metal contents in ceramsite blocks based on risk assessment

^1. School of River and Ocean Engineering, Chongqing Jiaotong University
^2. Research Institute of Solid Waste Management, Chinese Research Academy of Environmental Sciences
^3. Wuyuan Ninghai Environmental Protection Technology Co., Ltd.

More Information

Corresponding author: YANG Yufei E-mail: cqyyf@163.com

摘要

摘要: 为控制用于建材的陶粒中重金属的环境风险,采集利用电镀污泥烧制的陶粒制取的陶粒砌块样品,分析其重金属含量、浸出毒性浓度和有效量,识别其特征重金属及潜在风险,建立陶粒砌块用于墙体材料和路面铺设2种暴露场景时,基于风险评估方法的重金属含量限值制订方法,并采用该方法计算了陶粒砌块中重金属含量限值。结果表明:陶粒砌块中特征重金属为Cr、Ni、Cu、Zn和Ba,其浸出(释放)浓度分别为30.0~48.6、37.2~132.0、28.7~50.6、12.9~169.0和609~674 μg/L,低于GB 5085.3—2007《危险废物鉴别标准浸出毒性鉴别》中的标准限值,利用电镀污泥制取陶粒砌块是可行的资源无害化处理方法;废陶粒砌块中Cr、Ni、Cu、Zn、Ba浸出(释放)浓度限值分别为1.50、0.20、10.00、10.00和7.00 mg/L,含量限值分别为186 198、3 313、8 740、36 703和3 272 mg/kg。提出的重金属含量限值制订方法可为陶粒中重金属环境风险控制提供依据,为建材中重金属含量限值制订提供参考。
- 陶粒砌块 /
- 墙体材料 /
- 路面铺设 /
- 重金属 /
- 含量限值
Abstract: In order to control the environmental risk of heavy metals in the ceramsite used for building materials, samples of ceramsite blocks prepared by using ceramsite fired by electroplating sludge were collected, and the content of heavy metals, the toxic concentration of leaching and the effective amount of heavy metals in ceramsite blocks were analyzed. The characteristic heavy metals and their potential risks were ide.pngied, and a method based on the risk assessment method for determining the limits of heavy metals was established when ceramsite blocks were used. The method was used to calculate the limits of heavy metals in ceramsite blocks in two kinds of exposure scenarios, i.e. wall materials and pavement laying. The results showed that the characteristic heavy metals in the ceramsite blocks were Cr, Ni, Cu, Zn and Ba. The leaching (releasing) toxicity concentrations of these five heavy metals was 30.0-48.6, 37.2-132.0, 28.7-50.6, 12.9-169.0 and 609-674 μg/L, respectively. These values were lower than the standard limits in Ide.pngication Standard for Hazardous Wastes-Ide.pngication for Extraction Toxicity (GB 5085.3-2007). Therefore, the use of electroplating sludge to make ceramsite blocks was a feasible resource harmless treatment method. The maximum leaching(releasing) concentration of Cr, Ni, Cu, Zn, Ba from abandoned ceramsite blocks was 1.50, 0.20, 10.00, 10.00 and 7.00 mg/L, respectively. The limit content of Cr, Ni, Cu, Zn, Ba in ceramsite blocks was of 186 198, 3 313, 8 740, 36 703 and 3 272 mg/kg, respectively. The proposed method could provide basis for the environmental risk control of heavy metals in ceramsite and provide a reference for the method of formulating the content limits of heavy metals in building materials.
- ceramsite block /
- wall material /
- pavement laying /
- heavy metal /
- limit of content

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