生物吸附法处理污泥中重金属镍

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	英文篇名：Disposal of Sludge Containing Nickel Heavy Metals by Biosorption 作者：朱亦珺 英文作者：ZHU Yijun;BGRIMM Technology Group; 关键词：活性污泥 ; 重金属 ; 菌种 ; 微生物吸附 英文关键词：activatedsludge;;heavy metals;;bacteriastrain;;microbial adsorption 中文刊名：有色金属工程 英文刊名：Nonferrous Metals Engineering 机构：北京矿冶科技集团有限公司; 出版日期：2019-07-23 出版单位：有色金属工程 年：2019 期：07 语种：中文; 页：109-113 页数：5 CN：10-1004/TF ISSN：2095-1744 分类号：X703

摘要

以污水厂二沉池剩余污泥作为固定化微生物吸附重金属的实验对象,从某污水处理厂活性污泥取样筛选出了一株高效重金属Ni~(2+)吸附菌Z-2,通过分子生物学鉴定,确定其为苏云金芽孢杆菌,并考察了Z-2的重金属吸附性能。结果表明,菌株Z-2对Ni~(2+)具有较强的吸附性,投加3g/L (湿重)的菌体,对50mg/L Ni废水中吸附去除率达到30.67%,菌株Z-2对Ni~(2+)的吸附过程能很好地用吸附模型Langmuir方程,为更好地实现微生物吸附处理污泥中重金属离子工业化提供依据。
        The excess sludge of the secondary sedimentation tank of the sewage treatment plant was used as the experimental object for the adsorption of heavy metals by immobilized microorganisms.A high-efficiency heavy metal Ni2 +adsorption bacterial strain Z-2 was screened from the activated sludge of a sewage treatment plant and identified by molecular biology.It was identified as bacillus thuringiensis,and the heavy metal adsorption performance of Z-2 was examined.The results showed that the strain Z-2 had strong adsorption to Ni2 +,and the cells with 3 g/L(wet weight)were added,and the adsorption removal rate of the wastewater of 50 mg/L Ni reached30.67%.The adsorption process of Ni2 +can well use the Langmuir equation of adsorption model to provide a basis for better industrialization of heavy metal ions in sludge adsorption treatment.

引文

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