| 动态膜生物反应器的运行稳定性及其影响因素研究 |
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| 引用本文： | 吴春英,吴盈禧,夏俊林,黄霞.动态膜生物反应器的运行稳定性及其影响因素研究[J].中国给水排水,2009,25(21). |
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| 作者姓名： | 吴春英 吴盈禧 夏俊林 黄霞 |
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| 作者单位： | 清华大学,环境科学与工程系,北京,100084;清华大学,环境模拟与污染控制国家重点联合实验室,北京,100084 |
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| 基金项目： | 国家杰出青年科学基金 |
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| 摘 要： | 采用基于微网基材的动态膜生物反应器处理生活污水,考察了其运行稳定性以及曝气方式、微网表面水力条件、水力负荷、混合液性质等对运行稳定性的影响.研究表明,侧方曝气比下方曝气更有利于动态膜的稳定运行;动态膜存在一个临界通量,在低于临界值的次临界通量下运行时,动态膜的过滤压差变化平稳;污泥浓度为5、10、15 g/L时临界通量范围分别为(120～160)、(80～120)、(60～80)L/(m~2·h);微网表面的错流流速越高、水力负荷越低,则动态膜过滤压差的增幅越缓慢;非正常运行状态(如污泥解体、丝状菌污泥膨胀)会对动态膜的运行产生不利影响.
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| 关 键 词： | 动态膜生物反应器 稳定性 过滤压差 膜通量 |
Operational Stability of Dynamic Membrane Bioreactor and Its Influence Factors |
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| WU Chun-ying,WU Ying-xi,XIA Jun-lin,HUANG Xia.Operational Stability of Dynamic Membrane Bioreactor and Its Influence Factors[J].China Water & Wastewater,2009,25(21). |
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| Authors: | WU Chun-ying WU Ying-xi XIA Jun-lin HUANG Xia |
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| Affiliation: | WU Chun-ying1,2,WU Ying-xi1,XIA Jun-lin1,HUANG Xia1,2(1.Department of Environmental Science and Engineering,Tsinghua University,Beijing 100084,China,2.State Key Joint Laboratory of Environment Simulation and Pollution Control,China) |
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| Abstract: | The dynamic membrane bioreactor based on coarse pore-sized materials was used to treat domestic sewage,and the operational stability of the bioreactor and the influences of aeration mode,hydrodynamic conditions along the dynamic membrane surface,hydraulic loading and property of mixed liquid on the stability were investigated.It is found that side aeration is more helpful for the stable operation of the dynamic membrane than inferior aeration.There exists a critical flux in dynamic membrane filtration.When ... |
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| Keywords: | dynamic membrane bioreactor stability transmembrane pressure membrane flux |
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