| 废物水泥窑共处置产品中重金属释放量研究 |
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| 引用本文： | 杨玉飞,黄启飞,张霞,杨昱,王琪. 废物水泥窑共处置产品中重金属释放量研究[J]. 环境科学, 2009, 30(5): 1539-1544 |
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| 作者姓名： | 杨玉飞 黄启飞 张霞 杨昱 王琪 |
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| 作者单位： | 中国环境科学研究院,北京,100012;浙江工业大学浙西分校,浙江,衢州,324000;中国环境科学研究院,北京,100012 |
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| 基金项目： | “十一五”国家科技支撑计划项目（2007BAC16B03,2006BAC02A19） |
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| 摘 要： | 通过模拟煅烧实验制取水泥熟料,并采用国标GB/T 17671-1999制取混凝土样品.选用EA NEN7371和EA NEN7375浸出方法,利用基于菲克扩散第二定律的一维扩散模型对废物水泥窑共处置产品（混凝土）中重金属长期累积释放量进行了研究.结果表明,混凝土中重金属的最大释放量低于总量;各种重金属在混凝土中的扩散系数不同,且Cr>As>Ni>Cd; Cr、As、Ni和Cd 30a的累积释放量分别为4.43、 0.46、 1.50和0.02 mg/kg,释放率（累积释放量/最大释放量）分别为27.0%、 18.0%、 3.0%和0.2%;扩散系数是影响重金属累积释放量的重要因素,且两者表现出较好的相关性;Cr和As的扩散系数较大（分别为1.15E-15 m2/s和6.42E-16 m2/s）,应重点控制其进入水泥窑处置过程的总量.
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| 关 键 词： | 水泥产品 重金属 释放模型 累积释放量 水泥窑共处置 |
| 收稿时间： | 2008-06-24 |
| 修稿时间： | 2008-09-03 |
Release Amount of Heavy Metals in Cement Product from Co-processing Waste in Cement Kiln |
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| YANG Yu-fei,HUANG Qi-fei,ZHANG Xi,YANG Yu and WANG Qi. Release Amount of Heavy Metals in Cement Product from Co-processing Waste in Cement Kiln[J]. Chinese Journal of Environmental Science, 2009, 30(5): 1539-1544 |
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| Authors: | YANG Yu-fei HUANG Qi-fei ZHANG Xi YANG Yu WANG Qi |
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| Affiliation: | 1.Chinese Research Academy of Environmental Science;Beijing 100012;China;2.Zhejiang University of Technology Zhexi Branch;Zhejiang Quzhou 324000;China |
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| Abstract: | Clinker was produced by Simulating cement calcination test,and concrete samples were also prepared according to national standard GB/T 17671-1999.Long-term cumulative release amount of heavy metals in cement product from co-processing waste in cement kiln was researched through leaching test which refers to EA NEN 7371 and EA NEN7375,and one-dimensional diffusion model which is on the base of Fick diffusion law.The results show that availabilities of heavy metals are lower than the total amounts in concrete... |
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| Keywords: | cement product heavy metal release model cumulative release amount cement kiln co-processing |
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