Volume 5, Issue 1, March 2019, Page: 29-36
The Research of the Flow Characteristics in Spiral Membrane Separator
Zhou Xiantao, Institute of Chemical Machinery, East China University of Science and Technology, Shanghai, China
Liu Hui, Institute of Chemical Machinery, East China University of Science and Technology, Shanghai, China
Wan Xuhui, Institute of Chemical Machinery, East China University of Science and Technology, Shanghai, China
Received: Jan. 24, 2019;       Accepted: Mar. 17, 2019;       Published: Apr. 8, 2019
DOI: 10.11648/j.ajwse.20190501.15      View  19      Downloads  6
The spiral membrane separator is a novel module proposed for reducing the concentration polarization and membrane fouling of membrane separation process. This membrane separation process benefits from dean vortices produced by centrifugal instability in enhancing fluid mass transfer. A numerical stimulation of this membrane separation is presented and used to analyze the fluid flow characteristics and thoroughly understand the separation mechanism. The numerical model consists of a spiral flow path with rectangular sector. As the simulation with infiltration, the fluid domain of the ceramic membrane tube was as a porous medium domain. The standard momentum equation, added with the momentum equation source term which composed of the viscosity loss term and the inertia loss term, are figured out through the experimental characterization. In the simulation of spiral membrane separation, the Dean secondary flow structure is identified and found to enhance fluid mass transfer and to increase the permeate flux. The critical unstable state of spiral membrane separation is accordingly De=246 without the flow permeation and De=863 with the permeation, where Dean vortices cause collisions and the mixing of fluid particles. Then in the case of permeation, the fluid in separator at De=1232 is numerically simulated to show that the higher flow velocity and a large fluctuating trend of wall shear stress near the membrane surface (inside), which mainly contributed to alleviate concentration polarization and membrane fouling.
Membrane Separation, Secondary Flow, Numerical Simulation
To cite this article
Zhou Xiantao, Liu Hui, Wan Xuhui, The Research of the Flow Characteristics in Spiral Membrane Separator, American Journal of Water Science and Engineering. Vol. 5, No. 1, 2019, pp. 29-36. doi: 10.11648/j.ajwse.20190501.15
Copyright © 2019 Authors retain the copyright of this article.
This article is an open access article distributed under the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Zheng Cheng (1997). Membrane pollution and its prevention. Membrane Science and Technology 17, 5-14.
Liu Zhongzhou, Xu Shuguang and Li Suoding (1997). Membrane fouling and cleaning in UF and MF. Technology of Water Treatment 23, 187-192.
J. G. Herterich, I. M. Griffiths and D. Vella (2019). Reproducing the pressure-time signature of membrane filtration: The interplay between fouling, caking, and elasticity. Journal of Membrane Science 577, 235-248.
Wang Xiaolin (2001). Fouling and degradation of membranes and their prevention and control. Industrial Water Treatment 21, 1-5.
Liu Zhongzhou, Zhang Guojun and Ji Shulan (2006). Methods and strategies of study on concentration polarization and membrane fouling. Membrane Science and Technology 26, 1-15.
Jinwei Wang, Farhad Zamani, Andy Cahyadi, Jia Yuan Toh and Jia Wei Chew (2016). Correlating the hydrodynamics of fluidized granular activated carbon (GAC) with membrane-fouling mitigation. Journal of Membrane Science 510, 38-49.
Liu Yuanfa, He Gaohong and Li Baoyu (2006). Research developments of flux enhancement in membrane process. Chemical Industry and Engineering Progress 25, 30-34.
T. Lohaus, N. Herkenhoff, R. Shankar and M. Wessling (2018). Feed flow patterns of combined Rayleigh-Bénard convection and membrane permeation. Journal of Membrane Science 549, 60-66.
Takaaki Akagi, Takafumi Horie, Hayato Masuda, Keigo Matsuda and Yushi Hirata (2018). Improvement of separation performance by fluid motion in the membrane module with a helical baffle. Separation and Purification Technology 198, 52-59.
Hanuman Mallubhotla, Sven Hoffmann, Meike Schmidt, Johan Vente and Georges Belfort (1998). Journal of Membrane Science 141, 183-195.
Liu, L., Li, L., Ding, Z., Ma, R. and Yang, Z. (2005). Mass transfer enhancement in coiled hollow fiber membrane modules. Journal of Membrane Science 264, 113-121.
Kaufhold, D.a, Kopf, F.b, Wolff, C.c, Beutel, S.c, Hilterhaus, L.a, Hoffmann, M.b, Scheper, T.c, Schlüter, M.b and Liese, A.a (2012). Generation of Dean vortices and enhancement of oxygen transfer rates in membrane contactors for different hollow fiber geometries. Journal of Membrane Science 423-424, 342-347.
Jie, L., Liu, L., Yang, F., Liu, F. and Liu, Z. (2012). The configuration and application of helical membrane modules in MBR. Journal of Membrane Science 392-393, 112-121.
Ph Moulin, D Veyret and F Charbit (2001). Dean vortices: comparison of numerical simulation of shear stress and improvement of mass transfer in membraneprocesses at low permeation fluxes. Journal of Membrane Science 183, 149-162.
Manno, P., Moulin, P., Rouch, J. C., Clifton, M. and Aptel, P. (1998). Mass transfer improvement in helically wound hollow fiber ultrafiltration modules Yeast suspensions. Separation and Purification Technology 14, 175-182.
Bubolz, M., Wille, M., Langer, G. and Werner, U. (2002). The use of dean vortices for crossflow microfiltration: Basic principles and further investigation. Separation and Purification Technology 26, 81-89.
R. Moll, D. Veyret, F. Charbit and P. Moulin (2007). Dean vortices applied to membrane process: Part II: Numerical approach. Journal of Membrane Science 288, 321-335.
Seyed Pouria Motevalian, Ali Borhan, Hongyi Zhou and Andrew Zydney (2016). Twisted hollow fiber membranes for enhanced mass transfer. Journal of Membrane Science 514, 586-594.
David L (2001). Series solution of low Dean and Germano number flows in helical rectangular ducts. International Journal of Thermal Sciences 40, 937-948.
Fellouah H (2010). The Dean instability in power-law and Bingham fluids in a curved rectangular duct. Journal of Non-Newtonian Fluid Mechanics 165, 163-173.
Belfort G (1994). The behavior of suspensions and macromolecular solutions in crossflow microfiltration. Journal of Membrane Science 96, 1-58.
Browse journals by subject