污染控制技术及原理
俞一统,田光明,和苗苗.两种生物沥滤-电动修复联合技术的比较[J].环境科学学报,2009,29(1):163-168
两种生物沥滤-电动修复联合技术的比较
- Comparison of two different combined bioleaching-electrokinetic remediation processes
- 基金项目：浙江省科技厅计划项目(No.2004C23024)
- 作者
- 单位
- 俞一统
- 宁波大学建筑工程与环境学院, 宁波 315211
- 田光明
- 浙江大学环境与资源学院, 杭州 310029
- 和苗苗
- 浙江大学环境与资源学院, 杭州 310029
- 摘要：比较研究了生物沥滤和电动修复不同的结合方式对污泥中重金属处理效果的影响.在先进行生物沥滤4d之后用电动修复技术对污泥进行处理,试验结束之后污泥中的Cu含量为60.5m·gkg-1,Zn含量为170mg·kg-1;而采用同步生物沥滤和电动修复试验时,处理结束后污泥中Cu含量为122.8m·gkg-1,Zn含量为110m·gkg-1.利用2种修复技术处理污泥,污泥中重金属含量均达到我国污泥土地农田利用的标准,但先生物沥滤后电动修复可以减少能耗.
- Abstract：The combination of bioleaching and electrokinetic remediation has proven to be an effective method to remove heavy metals from municipal sewage sludge.In our study,a simulation was conducted to compare the efficiency of heavy metal removal rates of two different combination processes.Using electrokinetic remediation after bioleaching for 4 d,the contents of Cu and Zn in sewage sludge decreased to 60.5 mg·kg-1 and 170 mg·kg-1,respectively.Simultaneous bioleaching and electrokinetic remediation,on the other hand,reduced the concentration of Cu and Zn to 122.8 mg·kg-1 and 110 mg·kg1,respectively.Both combined processes allowed the concentrations of Cu and Zn to reach the Chinese standard for land application of sewage sludge.Compared to simultaneous bioleaching and electrokinetic remediation,electrokinetic remediation after bioleaching is preferred because it consumes less energy.
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