| Dynamic Membrane for Cross-flow Micro-filtration in Treating Activated Sludge |
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| 作者姓名： | 邓春华 李方 杨波 奚旦立 陈季华 |
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| 作者单位： | College of Environnental Science and Engineering , Dongbua University. Shanghai 200051 , China |
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| 摘 要： | Mixed liquid of activated sludge （AS） were micro- filtrated by dynamic membrane （DM） made of 6 000 mesh kaolin. The results illustrated that the permeate quality and flux with DM filtration were superior to that with direct filtration in treating AS. The experiments of membrane washing showed that DM could abate the internal fouling of membranes efficiently, and the permeate flux of renewed membrane reached 90% of that of new membranes. The denser the mixed liquid suspended solids （MLSS） were, the lower the permeate flux was. Increasing of both flow velocity over the membrane surface and trans-membrane pressure （TMP） could lead to some enhancement of permeate flux, while the former approach could be carried out more economically. The feasibility of application of the DM to membrane bioreactor （MBR） has been ascertained.
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| 关 键 词： | 活性污泥 处理方法 错流式微过滤 动态膜 |
| 文章编号： | 1672-5220（2007）01-0107-05 |
| 修稿时间： | 2005-03-30 |
Dynamic Membrane for Cross-flow Micro-filtration in Treating Activated Sludge |
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| DENG Chun-hua,LI Fang,YANG Bo,XI Dan-li,CHEN Ji-hua.Dynamic Membrane for Cross-flow Micro-filtration in Treating Activated Sludge[J].Journal of Donghua University,2007,24(1):107-111. |
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| Authors: | DENG Chun-hua LI Fang YANG Bo XI Dan-li CHEN Ji-hua |
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| Institution: | College of Environmental Science and Engineering, Donghua University. Shanghai 200051 , China |
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| Abstract: | Mixed liquid of activated sludge (AS) were microfiltrated by dynamic membrane (DM) made of 6 000 mesh kaolin. The results illustrated that the permeate quality and flux with DM filtration were superior to that with direct filtration in treating AS. The experiments of membrane washing showed that DM could abate the internal fouling of membranes efficiently, and the permeate flux of renewed membrane reached 90% of that of new membranes. The denser the mixed liquid suspended solids (MLSS) were, the lower the permeate flux was. Increasing of both flow velocity over the membrane surface and trans-membrane pressure (TMP) could lead to some enhancement of permeate flux, while the former approach could be carried out more economically. The feasibility of application of the DM to membrane bioreactor (MBR) has been ascertained. |
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| Keywords: | dynamic membrane cross-flow micro-filtration activated sludge permeate flux |
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