磁场与微生物固定技术处理酸性镀铜废水  

Treatment of acid copper plating wastewater by magnetic combined immobilized microorganism technique

作　　者：靳小蓓 巢云龙 李宏君[1] 刘言[1] 董慧[1] 李宁[1] 隋海然 林山杉[1] 

机构地区：[1]东北师范大学环境学院,长春130024

出　　处：《环境工程学报》2016年第3期1041-1047,共7页Chinese Journal of Environmental Engineering

基　　金：国家自然科学基金资助项目(51278093;51278065)

摘　　要：实验采用磁场与微生物固定技术结合的方法处理酸性镀铜废水,将磁场存在条件下经酸性镀铜废水驯化后的微生物固定在磁性载体表面处理酸性镀铜废水。设计正交实验研究气水比、磁场强度、水力停留时间、进水初始浓度4因素影响下铜离子的去除效果,各因素对实验结果的影响程度由大到小依次为：气水比〉磁场强度〉水力停留时间〉初始浓度。进出水的pH值测定发现,处理后出水pH值由原来的2.50左右上升至4.00-5.00。机理研究表明,菌体对Cu^2＋的去除作用包括菌体细胞的表面吸附、跨细胞膜的主动运输和积累等作用。In this study,we examined a technology for treating acid copper（ Cu^2＋）plating-contaminated wastewater by using a combination of magnetic and immobilized microorganisms. Microorganisms cultured from acid Cu^2＋plating-contaminated wastewater were fixed on a carrier,which was used in the experiment. Gas-water ratio,temperature,hydraulic retention time,and initial concentration were considered as factors for determining the efficiency of Cu^2＋removal. Further,an orthogonal test was performed under optimal conditions. Factors affecting Cu^2＋biosorption were gas-water ratio magnetic field strength hydraulic retention time influent concentration（ in the given order）. The pH value increased from 2. 50 in influent to the range from 4. 00 to 5. 00 in effluent. Cu^2 ＋biosorption occurs through surface adsorption,transmembrane active transport,and bioaccumulation.

关 键 词：磁场 微生物固定技术 PH值 微生物吸附 

分 类 号：X703[环境科学与工程—环境工程]