Rotating reverse osmosis and spiral wound reverse osmosis filtration: A comparison

Wastewater produced by the crew members on a long-term space mission needs to be recovered as potable water. Reverse osmosis (RO) has long been in use as a physical membrane separation technology for wastewater treatment. However, membrane fouling and concentration polarization have limited the effi...

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Bibliographic Details
Published in:Journal of membrane science 2006-11, Vol.285 (1), p.353-361
Main Authors: Shah, Tapan N., Yoon, Yeomin, Pederson, Cynthia L., Lueptow, Richard M.
Format: Article
Language:English
Subjects:
Rejection
Rotating reverse osmosis
Spiral wound membrane
Wastewater treatment
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Summary:Wastewater produced by the crew members on a long-term space mission needs to be recovered as potable water. Reverse osmosis (RO) has long been in use as a physical membrane separation technology for wastewater treatment. However, membrane fouling and concentration polarization have limited the efficiency for high recovery reverse osmosis systems. An advanced high pressure rotating RO device was designed to minimize these problems by the rotation of the cylindrical RO filter producing shear and Taylor vortices in the annulus of the device. We compare the performance of the rotating RO device to a standard spiral wound RO module using a commercially-available RO membrane under conditions of very high recovery and similar permeate flux. The studies were conducted using 0.01N sodium chloride solution and biological water processor effluent (BWPE) as model wastewaters. The results for 100% recovery of water from 0.01N sodium chloride solution show that the spiral wound RO has poor rejection (
ISSN:0376-7388
1873-3123
DOI:10.1016/j.memsci.2006.09.004