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在线混凝-超滤中膜污染与絮体水动力学的关系

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宋婷婷, 赵长伟, 王涛, 栾兆坤. 在线混凝-超滤中膜污染与絮体水动力学的关系[J]. 环境工程学报, 2014, 8(10): 4074-4080.
引用本文: 宋婷婷, 赵长伟, 王涛, 栾兆坤. 在线混凝-超滤中膜污染与絮体水动力学的关系[J]. 环境工程学报, 2014, 8(10): 4074-4080.
shu
Song Tingting, Zhao Changwei, Wang Tao, Luan Zhaokun. Relationship between membrane fouling and flocs hydrodynamics’ in in-line coagulation/UF process[J]. Chinese Journal of Environmental Engineering, 2014, 8(10): 4074-4080.
Citation: Song Tingting, Zhao Changwei, Wang Tao, Luan Zhaokun. Relationship between membrane fouling and flocs hydrodynamics’ in in-line coagulation/UF process[J]. Chinese Journal of Environmental Engineering, 2014, 8(10): 4074-4080.
shu

在线混凝-超滤中膜污染与絮体水动力学的关系

  • 1.

    中国科学院生态环境研究中心环境水质学国家重点实验室, 北京 100085

  • 基金项目:

    国家自然科学基金资助项目（21176245）

    国家科技支撑计划项目（2012BAJ25B02，2012BAJ25B06）

  • 中图分类号: X703

Relationship between membrane fouling and flocs hydrodynamics’ in in-line coagulation/UF process

  • 1.

    State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China

  • Fund Project:

  • 摘要: 为了解在线混凝-超滤过程中膜污染与组件内部絮体水动力学的关系，采用一种粒子成像测速技术PIV，在线监测混凝-超滤过程中絮体在组件内的流动状况及流体力学特性，并采用SEM对污染后的膜进行了分析表征。结果表明，在0.05 MPa下，随运行时间延长，出现了膜通量衰减现象。同时，膜表面絮体的水动力学性质发生较大的变化，PIV实验发现沿中空纤维膜轴向，上部絮体水动力现象变化较大，中部次之，下部变化最小，对应的SEM照片可以看出膜污染在轴向分布不均，上部污染最重，中部次之，下部最小。
    Abstract: The membrane fouling greatly restricted the membrane life and separation efficiency in the application of removing the natural organic matter in drinking water.It usually requires pretreatment to reduce membrane fouling for improving the removal efficiency of NOM and weakening membrane fouling.And coagulation is the most commonly used cell technology in drinking water treatment as well as the pretreatment of the membrane filtration.Most researches on coagulation/UF focus on the macroscopic separation at present,but they pay a little attention to the fluid hydrodynamics performance and the dynamic process of membrane contamination in the actual operation.So it's very important to find a new method to explore the fluid hydrodynamics around the membrane and the distribution of the fluid velocity field in the reactor,and then we can effectively control the membrane fouling.
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  • [1] Sheikholeslami R.Fouling mitigation in membrane process:Report on a workshop held January 26-29,1999,Technion-Israel Institute of Technology,Haifa,Israel.Desalination,1999,123(1):45-53
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    [8] 张玮,王元,徐忠,等.应用粒子图像速度场仪对泊肃叶流动及圆柱绕流的测量.西安交通大学学报,2002,36(3):246-251 Zhang Wei,Wang Yuan,Xu Zhong,et al.Application of particle image velocimetry to measurement of poisoeullie flow and flow around a circular cylinder.Journal of Xi’an Jiaotong University,2002,36(3):246-251(in Chinese)
    [9] 王昊利,王元.Micro-PIV 技术——粒子图像测速技术的新进展.力学进展,2005,35(1):77-90 Wang Haoli,Wang Yuan.MICRO-PIV:A new development of particle image velocimetry.Chinese Journal of Advances in Mechanics,2005,35(1):77-90(in Chinese)
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  • 收稿日期:  2013-12-26
  • 刊出日期:  2014-09-28
宋婷婷, 赵长伟, 王涛, 栾兆坤. 在线混凝-超滤中膜污染与絮体水动力学的关系[J]. 环境工程学报, 2014, 8(10): 4074-4080.
引用本文: 宋婷婷, 赵长伟, 王涛, 栾兆坤. 在线混凝-超滤中膜污染与絮体水动力学的关系[J]. 环境工程学报, 2014, 8(10): 4074-4080.
shu
Song Tingting, Zhao Changwei, Wang Tao, Luan Zhaokun. Relationship between membrane fouling and flocs hydrodynamics’ in in-line coagulation/UF process[J]. Chinese Journal of Environmental Engineering, 2014, 8(10): 4074-4080.
Citation: Song Tingting, Zhao Changwei, Wang Tao, Luan Zhaokun. Relationship between membrane fouling and flocs hydrodynamics’ in in-line coagulation/UF process[J]. Chinese Journal of Environmental Engineering, 2014, 8(10): 4074-4080.
shu

在线混凝-超滤中膜污染与絮体水动力学的关系

  • 1. 中国科学院生态环境研究中心环境水质学国家重点实验室, 北京 100085
  • 收稿日期:  2013-12-26
基金项目:

国家自然科学基金资助项目（21176245）

国家科技支撑计划项目（2012BAJ25B02，2012BAJ25B06）

摘要: 为了解在线混凝-超滤过程中膜污染与组件内部絮体水动力学的关系，采用一种粒子成像测速技术PIV，在线监测混凝-超滤过程中絮体在组件内的流动状况及流体力学特性，并采用SEM对污染后的膜进行了分析表征。结果表明，在0.05 MPa下，随运行时间延长，出现了膜通量衰减现象。同时，膜表面絮体的水动力学性质发生较大的变化，PIV实验发现沿中空纤维膜轴向，上部絮体水动力现象变化较大，中部次之，下部变化最小，对应的SEM照片可以看出膜污染在轴向分布不均，上部污染最重，中部次之，下部最小。

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