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Chlorine resistant polysulfone reverse osmosis modules

✍ Scribed by A.E. Allegrezza Jr.; B.S. Parekh; P.L. Parise; E.J. Swiniarski; J.L. White

Publisher: Elsevier Science
Year: 1987
Tongue: English
Weight: 904 KB
Volume: 64
Category: Article
ISSN: 0011-9164
DOI: 10.1016/0011-9164(87)90103-2

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✦ Synopsis

Spiral wound reverse osmosis modules incorporating a highly chlorine resistant membrane have been developed for use in the purification of water.

The modules exhibit >95% salt rejection with product flux rates of up to 55 gal/ft2/day (gfd), at 4OOpsi transmembrane pressure, 25oC, and with softened feed water.

The modules can be operated with high chlorine concentrations, i.e., continuous exposure to 5ppm free chlorine or intermittent exposure up to 100ppm free chlorine (pH range of 5.5-10).

The modules have a pH operation range of 4-11, with excursions outside of this range allowable during cleaning procedures. Module field tests have shown good fouling resistance combined with excellent response to cleaning protocols.

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