| 膜生物反应器中新型无纺布膜过滤特性及膜污染特征 |
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| 引用本文： | 刘艳鹏,杨凤林,柳丽芬,王婵婵.膜生物反应器中新型无纺布膜过滤特性及膜污染特征[J].环境工程学报,2009,3(5):844-848. |
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| 作者姓名： | 刘艳鹏 杨凤林 柳丽芬 王婵婵 |
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| 作者单位： | 大连理工大学环境与生命学院,大连,116024 |
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| 摘 要： | 通过无纺布和聚偏氟乙烯平板膜组件在相同操作条件下的对比实验，研究无纺布膜的过滤特性。结果表明，2种膜的膜生物反应器COD、氨氮平均去除率均＞90%。过膜压力变化表明在长期运行条件下，无纺布可适于作为膜生物反应器的过滤介质，其过滤机理为膜表面滤饼层形成动态膜，从而增强了膜截留能力。膜污染研究表明，无纺布膜阻力主要来自滤饼层（占总阻力的83.6%），经清洗后膜通量可恢复至94%。扫描电镜显示膜表面滤饼层较厚，结合膜阻力分析结果认为，该滤饼层对膜污染和可逆性影响较大。对膜表面和膜孔中胞外聚合物（EPS）的红外分析证实，其中含有蛋白质和多糖物质，而且组分分析表明蛋白质是膜污染物EPS中的主要组分，在膜孔中的含量比滤饼层中还高。
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| 关 键 词： | 无纺布膜 PVDF膜 膜阻力分析 |
Filtration performance and fouling characteristics of novel nonwoven membrane in membrane bioreactors |
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| Liu Yanpeng,Yang Fenglin,Liu Lifen and Wang Chanchan.Filtration performance and fouling characteristics of novel nonwoven membrane in membrane bioreactors[J].Techniques and Equipment for Environmental Pollution Control,2009,3(5):844-848. |
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| Authors: | Liu Yanpeng Yang Fenglin Liu Lifen and Wang Chanchan |
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| Affiliation: | School of Environmental & Biological Science & Technology, Dalian University of Technology, Dalian 116024,School of Environmental & Biological Science & Technology, Dalian University of Technology, Dalian 116024,School of Environmental & Biological Science & Technology, Dalian University of Technology, Dalian 116024 and School of Environmental & Biological Science & Technology, Dalian University of Technology, Dalian 116024 |
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| Abstract: | The membrane filtration property of nonwoven material in submerged MBR(membrane bioreactor) system was investigated by comparing with a PVDF(polyvinylidene fluoride) flat membrane under the same conditions.The results showed that after filtering through the two membrane modules,an average COD and NH + 4-N removal of effluent reached over 90%.The changes of TMP(Trans-membrane pressure) revealed that the nonwoven materials acted better for filtration in membrane bioreactor system under long-term operation.The... |
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| Keywords: | EPS |
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