膜科学与技术

超滤膜处理东江水的阈通量和极限通量对比研究

作者：孙国胜，刘帅²，武睿¹，鄢忠森³，瞿芳术³，梁恒³，李圭白³

单位： 1. 广东粤海水务股份有限公司，深圳518021，2. 东莞常平粤海水务有限公司，东莞523570；3. 哈尔滨工业大学市政环境工程学院，哈尔滨150090

关键词：超滤膜；阈通量；极限通量

出版年,卷(期):页码： 2016,36(6):126-132

摘要：

超滤膜通量的选取直接关系到超滤系统的运行稳定性和基建费用，是超滤系统设计最为重要的参数。随着膜技术的发展和膜产品价格的降低，低通量将在水处理领域获得更多的应用。然而，现有的低通量体系中各种通量概念繁多，尚无明确适用于饮用水超滤工艺的低通量概念。本论文结合地表水体的原水和混凝-沉淀后水开展了超滤膜阈通量和极限通量的测定，并在两个通量下进行了运行对比研究。实验结果表明：原水及沉后水在极限通量5.0 L/m2h下运行，膜污染得到有效控制，极限通量能够在死端过滤的模式下实现长期稳定运行。

Membrane flux determines both running stability and capital investment of a water treatment engineering using ultrafiltration. Hence, design flux is one of the most important parameters for an ultrafiltration system. On a basis of membrane technology developments and membrane cost decreasing, lower fluxes can gradually become acceptable in drinking water treatment field. However, although there are various low flux concepts used for membrane fouling control, a clear definition of low flux for ultrafiltration membranes has not been properly developed yet. In this work, the filtration tests of surface water and coagulation-sedimentation effluent were performed under both threshold and limiting fluxes. Both water purification performance and fouling developments were compared. The results indicated that the stable filtration of the tested water samples could be obtained only under the limiting flux (5.0 L/m2h). Hence, the limiting flux could be regarded as a possible resolution for membrane fouling control and stable operation of a ultrafiltration system.

参考文献：

[1] 李圭白，瞿芳术. 城市饮水净化超滤水厂设计若干新思路[J]. 给水排水. 2015(01): 1-3.
[2] Lee N, Amy G, Croué J, et al. Identification and understanding of fouling in low-pressure membrane (MF/UF) filtration by natural organic matter (NOM)[J]. Water Research. 2004, 38(20): 4511-4523.
[3] Yuan W, Zydney A L. Humic Acid Fouling during Ultrafiltration[J]. Environmental Science & Technology. 2000, 34(23): 5043-5050.
[4] Field R W, Pearce G K. Critical, sustainable and threshold fluxes for membrane filtration with water industry applications[J]. Advances in Colloid and Interface Science. 2011, 164(1-2): 38-44.
[5] Field R W, Wu D, Howell J A, et al. Critical flux concept for microfiltration fouling[J]. Journal of Membrane Science. 1995, 100(3): 259-272.
[6] 王兆之，梁恒，李圭白. 预处理对阈通量的影响[J]. 哈尔滨工业大学学报. 2013, 45(6): 38-42.
[7] Peter-Varbanets M, Hammes F, Vital M, et al. Stabilization of flux during dead-end ultra-low pressure ultrafiltration[J]. Water Research. 2010, 44(12): 3607-3616.
[8] Peter-Varbanets M, Zurbrügg C, Swartz C, et al. Decentralized systems for potable water and the potential of membrane technology[J]. Water Research. 2009, 43(2): 245-265.
[9] Peter-Varbanets M, Gujer W, Pronk W. Intermittent operation of ultra-low pressure ultrafiltration for decentralized drinking water treatment[J]. Water Research. 2012, 46(10): 3272-3282.
[10] Howell J A. Sub-critical flux operation of microfiltration[J]. Journal of Membrane Science. 1995, 107(1-2): 165-171.
[11] Diez V, Ezquerra D, Cabezas J L, et al. A modified method for evaluation of critical flux, fouling rate and in situ determination of resistance and compressibility in MBR under different fouling conditions[J]. Journal of Membrane Science. 2014, 453: 1-11.
[12] van der Marel P, Zwijnenburg A, Kemperman A, et al. An improved flux-step method to determine the critical flux and the critical flux for irreversibility in a membrane bioreactor[J]. Journal of Membrane Science. 2009, 332(1–2): 24-29.
[13] Le Clech P, Jefferson B, Chang I S, et al. Critical flux determination by the flux-step method in a submerged membrane bioreactor[J]. Journal of Membrane Science. 2003, 227(1-2): 81-93.
[14] 董秉直，刘风仙，桂波. 在线混凝处理微污染水源水的中试研究[J]. Industrial Water Treatment. 2008, 01期(1): 40-43.
[15] 袁栋栋，樊耀波，徐国良，等. 膜生物反应器中临界通量理论的研究[J]. 膜科学与技术. 2010(02): 97-103.
[16] Bacchin P, Aimar P, Field R. Critical and sustainable fluxes: Theory, experiments and applications[J]. Journal of Membrane Science. 2006, 281(1-2): 42-69.
[17] Peter-Varbanets M, Margot J, Traber J, et al. Mechanisms of membrane fouling during ultra-low pressure ultrafiltration[J]. Journal of Membrane Science. 2011, 377(1-2): 42-53.

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