膜科学与技术

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Discussing about critical operating flux of ultrafiltration membrane

Authors：

LIU Chong, LV Xiaolong, WU Chunrui, WANG Xuan, GAO Qijun, CHEN Huayan, JIA Yue

Units： (State Key Laboratory of Separation Membranes and Membrane Processes, Institute of Biological and Chemical Engineering, Tianjin Polytechnic University, Tianjin 300387)

KeyWords： membrane fouling; critical flux; critical operating flux

ClassificationCode：TQ028.3

year,volume(issue):pagination： 2017,37(1):23-26

Abstract：

Critical flux was generally used to reflect the membrane fouling, but the pressure value corresponded critical flux was small, could not reflect the actual membrane fouling in filtrating process. According to our proposed the concept of critical operating flux, critical flux and critical operating flux were compared in this paper. Both two fluxes of the non-pulsation process, pulsation process and pulsation coupled with diatomite were investigated to discuss the case of reflecting the membrane fouling. The results showed that critical flux could show the difference of the membrane fouling state in the three process, but it was lack in the practical guiding significance because the actual membrane filtration process was done in a certain degree of cake layer. However, critical operating flux could better represent the actual state of membrane fouling in filtration process and reflect the influence of cake layer on membrane flux. Compared with critical flux, critical operating flux was sufficient in guiding significance in practical engineering applications.

Funds：

国家自然科学基金（21176188，21576210）

AuthorIntro：

第一作者简介：刘冲（1988-），男，河北沧州市人，硕士生，主要从事膜污染控制方法研究.*通讯作者，Email：luxiaolong@263.net

Reference：

[1] Curcio S, Scilingo G, Calabrò V, et al. Ultrafiltration of BSA in pulsating conditions: an artificial neural networks approach[J]. J.Membr.Sci, 2005, 246(2): 235-247.
[2] Schwinge J, Neal P R, Wiley D E, et al. Estimation of foulant deposition across the leaf of a spiral-wound module[J]. Desalination, 2002, 146(1): 203-208.
[3] Escobar I C, Van Der Bruggen B. Microfiltration and ultrafiltration membrane science and technology[J]. J.Appl.Polym.Sci, 2015, 132(21):1-17.
[4] Field R, Wu D, Howell J, et al. Critical flux concept for microfiltration fouling[J]. J.Membr.Sci, 1995, 100(3): 259-272.
[5] Chen V, Fane A, Madaeni S, et al. Particle deposition during membrane filtration of colloids: transition between concentration polarization and cake formation[J]. J.Membr.Sci, 1997, 125(1): 109-122.
[6] 姚金苗, 王湛, 梁艳莉, 等. 超, 微滤过程中临界通量的研究进展[J]. 膜科学与技术, 2008, 28(2): 69-72.
[7] 王兆之, 梁恒. 膜材料对阈通量的影响[J]. 给水排水, 2012, 38(11): 127-131.
[8] Defrance L, Jaffrin M. Comparison between filtrations at fixed transmembrane pressure and fixed permeate flux: application to a membrane bioreactor used for wastewater treatment[J]. J.Membr.Sci, 1999, 152(2): 203-210.
[9] Luo J, Ding L, Wan Y, et al. Threshold flux for shear-enhanced nanofiltration: experimental observation in dairy wastewater treatment[J]. J.Membr.Sci, 2012, 409: 276-284.
[10] Rai P, Rai C, Majumdar G, et al. Resistance in series model for ultrafiltration of mosambi (Citrus sinensis (L.) Osbeck) juice in a stirred continuous mode[J]. J.Membr.Sci, 2006, 283(1): 116-122.

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