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농축기술로서의 유기역삼투법의 개발

Development of the Induced Reverse Osmosis Technique for Concentration

HWAHAK KONGHAK, April 1975, 13(2), 79-90(12), NONE
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Abstract

본 연구는 적절한 외부용액을 막의 저압측에 접촉시킴으로써 재래적인 역삼투법 보다 좀더 효율적으로 용액을 농축시킬려는 유기역삼투의 개발을 목적으로 관형모듈 유동농축공정에서 유기될 외부용액의 접촉효과에 대한 이론적 추정과 실제적인 유기가능성에 대한 실험적 접근을 시도하였다. 관형 막지지관의 축을 따라서 균일하게 막의 저압측에 외부용액을 교류식으로 도입하여 접촉시킴은 막내측원액을 오염시킴이 없이 접촉효과를 효율적으로 유기시키는 방법이었다. 역삼투법에서 애용되는 비대칭형 다공성막은 막의 구조상접촉효과의 유기에 불리한 영향을 미치는 것으로 보여졌고 본법의 실제적인 활용에 있어서 최대의 난점은 막외측류를 위한 가장 적절한 막지지재의 개발에 있는 것으로 발견되었다.
This study attempted an experimental approach to the applicability of the induced reverse osmosis technique in the tubular module concentration unit on the basis of the theoretically predicted contacting effect of an external solution. Keeping a suitable external solution in contact with the feed solution on the low pressure side of the membrane uniformly along the axis of the tubular pressure vessel induced effectively the contacting effect with no evidence of contaminating the feed solution. The asymmetric porous membranes which are appreciated in the reverse osmosis process appeared to be less beneficial in the induced reverse osmosis process. The crux of the technique was found to lie in developing the most suitable backing material for flow outside the membrane.

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