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Reverse osmosis for wash water recovery in space vehicles.Tests were carried out on both synthetic and real wash water derived from clothes laundry to determine the utility of reverse osmosis in recovering the water for recycle use. A blend membrane made from cellulose di- and triacetates, and a cross-linked cellulose acetate/methacrylate were evaluated. Both were found acceptable. A number of detergents were evaluated, including a cationic detergent, sodium dodecyl sulfate, potassium palmitate, and sodium dodecylbenzenesulfonate. The tests were all made at a temperature of 165 F to minimize microbial growth. Long-term (15 to 30 day) runs were made at 600 and 400 psi on laundry water which was pretreated either by alum addition and sand filtration or by filtration only through 0.5 micron filters. A 30-day run was made using a 2-in. diameter by 22-in. long spiral module at 400 psig with filtering as the pretreatment. The membrane fouling by colloidal matter was found to be controllable. The unit produced initially 55 gal/day and 27 gal/day after 30 days.
Document ID
19730053169
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Lawrence, R. W.
Saltonstall, C. W., Jr.
(Envirogenics Systems Co. El Monte, Calif., United States)
Date Acquired
August 7, 2013
Publication Date
July 1, 1973
Subject Category
Biotechnology
Report/Patent Number
ASME PAPER 73-ENAS-12
Meeting Information
Meeting: Intersociety Conference on Environmental Systems
Location: San Diego, CA
Country: US
Start Date: July 16, 1973
End Date: July 19, 1973
Sponsors: AIAA, ASMA, ASME, AIChE, SAE
Accession Number
73A37971
Funding Number(s)
CONTRACT_GRANT: OSW-14-30-2815
Distribution Limits
Public
Copyright
Other

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