| A/O-膜生物反应器和A~2O系统中有机物分子量分布的对比研究 |
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| 引用本文： | 吴志超,尹星,王志伟,王新华,周振.A/O-膜生物反应器和A~2O系统中有机物分子量分布的对比研究[J].环境污染与防治,2009,31(5). |
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| 作者姓名： | 吴志超 尹星 王志伟 王新华 周振 |
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| 作者单位： | 同济大学环境科学与工程学院,污染控制与资源化研究国家重点实验室,上海,200092 |
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| 摘 要： | 采用凝胶过滤色谱(GPC)对A/O-膜生物反应器(A/O-MBR)和A2O系统中有机物分子量分布进行了对比研究.结果表明,A/O-MBR系统中由进水到好氧滤液的有机物分子量分布依次变宽,其趋势恰好与A2O系统相反;A/O-MBR好氧滤液的有机物分子量分布远宽于A2O好氧滤液.A/O-MBR好氧滤液中重均分子量(Mw)＞107 u的有机物占总有机物质量的3.4%,表明正是由于膜的截留作用导致这类大分子有机物在MBR中的累积,而无法像A2O系统一样随出水流走;A/O-MBR系统各段污泥混合液的胞外聚合物(EPS)的分子量分布较分散,说明A/O-MBR系统中微生物新陈代谢产物多,并在膜的截留作用下最终造成了这些产物在膜表面大量的沉积.
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| 关 键 词： | 膜生物反应器 分子量分布 膜面污染物 |
Comparison of A/O-MBR and A~2O process through molecular weight distribution of organic matters |
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| Wu Zhichao,Yin Xing,Wang Zhiwei,Wang Xinhua,Zhou Zhen.Comparison of A/O-MBR and A~2O process through molecular weight distribution of organic matters[J].Environmental Pollution & Control,2009,31(5). |
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| Authors: | Wu Zhichao Yin Xing Wang Zhiwei Wang Xinhua Zhou Zhen |
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| Institution: | State Key Laboratory of Pollution Control and Resource Reuse;College of Environmental Science and Engineering;Tongji University;Shanghai 200092 |
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| Abstract: | A comparison between anoxic/aerobic membrane bioreactor(A/O-MBR) and anaerobic/anoxic/aerobic activated sludge process(A2O) was carried out through distributions of molecular weight of organic matters.The results showed that the molecular weight distribution of A/O-MBR became wider following the procedure of the process and was contrary to that of A2O.Although the molecular weight distribution of filtrate of A/O-MBR aerobic tank was much wider than that of filtrate of A2O aerobic tank,the effluent of A/O-MB... |
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| Keywords: | A2O |
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