城市污泥中重金属形态分析方法研究

摘要以徐州某生活污水处理厂的脱水污泥作为研究对象，并添加外源菌剂进行好氧发酵。分别在好氧发酵前后，采用BCR法和Tessier法提取污泥样品中的As、Cd、Cr、Cu、Hg、Ni、Pb、Zn共8种重金属的不同种形态。通过加和各个形态得到污泥样品中各个重金属的总量，以此来比较BCR法和Tessier法对各个金属提取的有效性。实验结果表明，不同重金属的总含量差距显著；对重金属As和Hg不同形态的提取使用BCR法优于Tessier法；对重金属Cd、Cr、Cu、Ni、Pb、Zn不同形态的提取使用Tessier法优于BCR法。70719

该论文有图16幅，表4个，参考文献11篇。

毕业论文关键词：城市污泥重金属 BCR法 Tessier法

Morphological Analysis Method Study of Heavy Metals in Sewage Sludge

Abstract This study takes the sludge of Xuzhou sewage treatment plant as the research object. Aerobic fermentation was conducted by adding exogenous bacteria agent. The different morphologies of 8 kinds heavy metals were extracted using BCR method and Tessier method for sludge samples before and after aerobic fermentation. The total contents of heavy metals in sludge samples were obtained by adding each morphology content. And then the total contents obtained from the two methods were compared. The experimental results show that the total contents of different heavy metals are very different; For the extraction of the different forms of As and Hg, BCR method is better than Tessier method; For the extraction of heavy metal Cd, Cr, Cu, Ni, Pb and Zn,Tessier method is superior to the BCR method.

There are 16 figures,4 tables and 11 references in this paper.

Key words：sludge heavy metals BCR method Tessier method

摘要 I

Abstract II

目录 III

图清单 IV

表清单 IV

1绪论 1

2实验部分 2

2.1实验仪器 2

2.2实验试剂 3

2.3污泥样品的采集及处理 3

2.4重金属形态分析 3

2.5重金属含量的测定 4

3结果与讨论 5

3.1砷含量测定结果比较 6

3.2镉含量测定结果比较 7

3.3铬含量测定结果比较 8

3.4铜含量测定结果比较 8

3.5汞含量测定结果比较 9

3.6镍含量测定结果比较 10

3.7铅含量测定结果比较 11

3.8锌含量测定结果比较 12

4结论 13

参考文献 15

致谢 16

图清单

图序号图名称页码

图3-1 发酵前As总含量 6

图3-2 发酵后As总含量

图3-3 发酵前Cd总含量 7

图3-4 城市污泥中重金属形态分析方法研究:http://www.751com.cn/huaxue/lunwen_80172.html