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吸附-降解组合生物系统处理含铜离子城市污水
引用本文:吴晓林,王磊,高燕,苏耀东,李风亭. 吸附-降解组合生物系统处理含铜离子城市污水[J]. 环境科学, 2005, 26(2): 131-136
作者姓名:吴晓林  王磊  高燕  苏耀东  李风亭
作者单位:同济大学化学系,上海,200092;同济大学污染控制与资源化研究国家重点实验室,上海,200092;中国轻工业武汉设计院,武汉,430063
摘    要:采用Pseudomonas putida 5-x细胞为吸附剂的生物吸附过程组合SBR生物降解系统处理含铜离子城市废水.研究了生物吸附剂Pseudomonas putida 5-x细胞的最佳制备条件以及组合系统的运行过程.实验结果表明,在优化的条件下,Pseudomonas putida 5-x细胞对铜离子的吸附容量可达87.3mg·g-1,经生物吸附处理后,污水中Cu2+的含量显著降低,尽管残留的Cu2+对活性污泥吸附COD的能力尚有一定影响,但已不影响SBR系统对废水中COD的去除效果.研究表明,在活性污泥法处理含铜离子废水前,采用生物吸附技术降低废水中Cu2+含量,有利于提高后续活性污泥过程对COD的去除能力.

关 键 词:细胞生长相  细胞预处理  COD去除  COD吸附能力  Cu2+吸附  Pseudomonas putida
文章编号:0250-3301(2005)02-0131-06
收稿时间:2004-06-14
修稿时间:2004-09-24

Combined Bio-Process for Treatment of Municipal Wastewater Containing Cu2+
WU Xiao-lin,WANG Lei,GAO Yan,SU Yao-dong and LI Feng-ting. Combined Bio-Process for Treatment of Municipal Wastewater Containing Cu2+[J]. Chinese Journal of Environmental Science, 2005, 26(2): 131-136
Authors:WU Xiao-lin  WANG Lei  GAO Yan  SU Yao-dong  LI Feng-ting
Affiliation:Department of Chemistry, Tongji University, Shanghai 200092, China.
Abstract:A combined bioprocess consisting of biosorption section with P. putida 5-x cell as biosorbent followed by a SBR is developed to treat Cu2+ containing municipal wastewater. The optimal preparing technique of P. putida 5-x cell as biosorbent is studied. Under the optimal condition, adsorption capacity of the P. putida 5-x cell to Cu 2+ reached 87.3 mg·g-1. The performance of the combined bioprocess for treating Cu2+ containing wastewater is assessed. The experimental results indicate that after treatment by the biosorption section, the Cu 2+ concentration in wastewater reduced to the level that did not inhibit COD removal efficiency of subsequent SBR activated sludge process, although it still affectes the COD adsorption capacity of activated sludge. In terms of COD removal, the biosorption section is efficient for reducing Cu2+ concentration to provide biodegradable wastewater for subsequent SBR activated sludge process.
Keywords:cell growth phase  cell pretreatment  removal of COD  COD adsorbing capability  Cu2+ adsorbing  Pseudomonas putida
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