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Mathematical Modeling for the local flux distribution of submerged hollow fiber membrane module

Authors： Xianhui Li1, Jianxin Li1*, Hong Wang1, Benqiao He1, Jie Wang1, Hongwei Zhang1, Jixiang Li2

Units： 1. State Key Laboratory of Separation Membranes and Membrane Processes, Tianjin Polytechnic University, Tianjin 300387, P. R. China; 2. Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201203, P. R. China

KeyWords： Filtration mathematical model; Submerged hollow fiber membrane; Local flux distribution; Momentum balance; Mass balance

ClassificationCode：TQ028.5

year,volume(issue):pagination： 2015, 35(5):1-5

Abstract：

A filtration mathematical model was successfully developed by complete mass balance and momentum balance to predict the local flux distribution along fiber. The effect of radial permeate flow on flow resistance was taken into consideration in the model. The effects of fiber length, inside diameter, average operating flux and membrane intrinsic resistance on local flux distribution were investigated using this model. The simulated results showed that there existed an effective working length of the submerged hollow fiber membrane at certain operating conditions. Furthermore, it was also found that the asymmetry of local flux distribution increased with the increase of average operating flux, fiber length and membrane intrinsic resistance, whereas it decreased with an increase in fiber inner diameter. This modeling plays a theoretical foundation for the optimizing and operating of hollow fiber membrane module.

Funds：

国家自然科学基金（51408588）; 教育部长江学者创新团队发展计划（IRT13084）

AuthorIntro：

李贤辉(1986-)，男，河北邯郸人，博士研究生，主要从事中空纤维膜污染机理和膜组件流体力学等方面研究。

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