膜科学与技术

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Modeling analysis of pipeline and runoff flow direction in reverse osmosis system at flow rate of 2 m/s

Authors： Wang Yanning1,2, Yuan Hongying1,2, Jing dawei1,2

Units： 1. School of Environmental and Municipal Engineering, Tianjin Chengjian University, Tianjin 300384, China; 2. Tianjin Key Laboratory of Aquatic Science and Technology, Tianjin 300384, China

KeyWords： RO system, pipeline pressure drop, runoff direction, Fouling distribution

ClassificationCode：TQ028.8

year,volume(issue):pagination： 2016,36(6):19-24

Abstract：

On the basis of particular reference parameters and the flow velocity of 2m/s, the operational
conditions of reverse osmosis (RO) system under different runoff directions were analyzed by using the simulation software which can reflect the pipeline pressure drop. Two operating parameters of water yield and cross flow
ratio in a whole membrane shell were proposed to characterize the fouling rate and defouling intensity for each
membrane shell, respectively. It is found that non-uniform fouling distribution in each membrane shell was
mainly attributed to unbalance water yield. Moreover, the results showed that the membranes at the bottom
membrane shells suffered from relative severe fouling during the current applications of RO systems with the flow rate of 2 m/s.

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AuthorIntro：

作者简介：汪艳宁（1975-），女，西安人，硕士，讲师，从事膜工艺技术研究，E-mail：wangyanning@tcu.edu.cn

Reference：

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