REVERSE-OSMOSIS MODULE FOR SPACECRAFT WASHWATER RECYCLE

Award Information
Agency:
National Aeronautics and Space Administration
Branch
n/a
Amount:
$283,165.00
Award Year:
1984
Program:
SBIR
Phase:
Phase II
Contract:
n/a
Agency Tracking Number:
660
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
Bend Research Inc.
64550 Research Road, Bend, OR, 97701
Hubzone Owned:
N
Socially and Economically Disadvantaged:
N
Woman Owned:
N
Duns:
n/a
Principal Investigator:
Walter C. Babcock
() -
Business Contact:
() -
Research Institution:
n/a
Abstract
EXTENDED SPACE MISSIONS REQUIRE EXTENSIVE RECYCLING OF WATERTO PERMIT FREQUENT WASHING AND BATHING OF THE CREW. REVERSEOSMOSIS (RO), OFTEN CALLED HYPERFILTRATION, PROMISES TO BE A UNIQUELY SUITED TECHNOLOGY FOR WATER RECYCLING IN SPACECRAFT. HOWEVER, CURRENT MEMBRANE MODULE DESIGNS HAVE TWO MAJOR SHORTCOMINGS FOR THIS APPLICATION: (1) THEY ARE EASILY FOULED BY BACTERIA AND SUSPENDED MATTER FOUND IN WASHWATER, AND (2) THEY ARE RELATIVELY HEAVY. THIS EFFORT INVESTIGATES A NEW TYPE OF RO MEMBRAME MODULE BASED ON A TUBE-SIDE-FEED HOLLOW-FIBER MEMBRANE CONFIGURATION THAT OVERCOMES BOTH SHORTCOMINGS. POSITIVE FEED FLOW WITHIN THE HOLLOW-FIBER LUMENS IS EXPECTED TO MINIMIZE FOULING. BECAUSE THE FIBERS THEMSELVES SERVE AS PRESSURE VESSELS, NO HEAVY EXTERNAL PRESSURE VESSEL IS REQUIRED. IT IS ESTIMATED THAT A MODULE OF THIS DESIGN WOULD BE ABOUT 1/16 THE WEIGHT OF A CONVENTIONAL MODULE AND WOULD REQUIRE ABOUT 1/2 THE SPACE. THE PHASE I PROGRAM DEMONSTRATES THE FOULINGRESISTANCE OF THIS MODULE CONFIGURATION DURING PROLONGED TREATMENT OF ACTUAL WASHWATER USING WATER-DESALTING MODULES ALREADY UNDER DEVELOPMENT. A PROTOTYPE LIGHT-WEIGHT , HIGH PRODUCTIVITY MODULE SPECIFICALLY DESIGNED FOR WASHWATER RECYCLING IS CONSTRUCTED AND TESTED. BASED ON THE TECHNICALRESULTS, A DESIGN ANALYSIS OF RO FOR SPACE VEHICLE WASHWATERRECYCLING IS CONDUCTED.

* information listed above is at the time of submission.

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