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Kwon, Young-Nam
Superior Membrane-based Advanced Research & Technology (SMART) Lab
Research Interests
  • Membrane, Reverse(Forward) osmosis, Membrane distillation, Hydrate-induced ice desalination

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Effect of feed spacer thickness on the fouling behavior in reverse osmosis process - A pilot scale study

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Title
Effect of feed spacer thickness on the fouling behavior in reverse osmosis process - A pilot scale study
Author
Park, Hyung-GyuCho, Sung-GeunKim, Kang-JinKwon, Young-Nam
Issue Date
2016-02
Publisher
ELSEVIER SCIENCE BV
Citation
DESALINATION, v.379, pp.155 - 163
Abstract
The performance deterioration of RO membrane processes caused by the accumulation of rejected solutes on membrane surface is an inevitable phenomenon in membrane processes. The feed spacer in spiral wound reverse osmosis (RO) membrane modules can provide the structural support to keep feed channel open and also allow turbulent flow to mitigate solute concentration build-up at the vicinity of membrane surface. The objective of this study was to investigate the effect of feed spacer thickness on both membrane fouling behavior and cleaning efficiency in a pilot test during a 659 h operation. Furthermore, fouling load distribution was studied by measuring normalized differential pressure of individual elements in pressure vessels. Foulant analysis according to feed spacer thickness was also conducted to compare fouling propensities. This study showed that a thicker feed spacer could reduce membrane fouling and subsequently decrease membrane cleaning frequency and allow an even fouling load distribution along the modules installed in a pressure vessel.
URI
https://scholarworks.unist.ac.kr/handle/201301/17916
URL
http://www.sciencedirect.com/science/article/pii/S0011916415301132
DOI
10.1016/j.desal.2015.11.011
ISSN
0011-9164
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