| 错流膜生物反应器水力清洗特性研究 |
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| 引用本文： | 李春杰,何义亮,欧阳铭.错流膜生物反应器水力清洗特性研究[J].环境科学,1999,20(2):57-60. |
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| 作者姓名： | 李春杰 何义亮 欧阳铭 |
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| 作者单位： | [1]同济大学环境工程学院 [2]兰州铁道学院环境工程系 |
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| 摘 要： | 采用外压管式聚砜－聚丙烯腈共混超滤膜进行错流膜生物反应器水力清洗特性研究，结果表明，清洗时采用高膜面流速、低操作压力和限制透过液对流传递作用有利于错流膜生物反应器通量的恢复，这符合膜藏去除过程中的传质机理；适宜的膜面流速应稍大于临界流速ｖｋ＝１．９２ｍ／ｓ，清洗时间应控制在１０ｍｉｎ，适宜的清洗操作压力为０．０７ＭＰａ。
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| 关 键 词： | 膜生物反应器 错流 膜污染 水力清洗 传质机理 |
| 收稿时间： | 1998/8/22 0:00:00 |
Study on the Characteristics of Hydraulic Cleaning in Crossflow Membrane Bioreactor |
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| Li Chunjie,He Yiliang and Ouyang Ming.Study on the Characteristics of Hydraulic Cleaning in Crossflow Membrane Bioreactor[J].Chinese Journal of Environmental Science,1999,20(2):57-60. |
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| Authors: | Li Chunjie He Yiliang and Ouyang Ming |
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| Institution: | School of Environmental Engineering, Tongji University, Shanghai 200092, China;School of Environmental Engineering, Tongji University, Shanghai 200092, China;Dept. of Environ.Eng., Lanzhou Railway Institute, Lanzhou 730070, China |
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| Abstract: | The external pressure tubular moduel and PS PAN blended membranes were used in the study on the characteristics of hydraulic cleaning in crossflow membrane bioreactor.It was demonstrated that low trans membrane pressure and high velocities along membrane surface played an important role in removing the fouling layer and so did the elimination of the effect of the convective transport to membrane because the pressure differences across the membrane were reduced to zero.Considerations of the mechanism of mass transfer in the formation and elimination of the membrane fouling furtherly supported these cleaning conditions.The cleaning operation parameters were obtained at crossflow velocity a little more than v k=1 92m/s which was the critical velocity,cleaning time about 10min,trans membrane about 0.07MPa. |
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| Keywords: | membrane bioreactor crossflow membrane fouling hydraulic cleaning mechanism of mass transfer |
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