Water reuse is essential for long duration space missions. However, water recycle systems also provide a habitat for microorganisms and allow accumulation of chemical compounds which may be acutely or chronically toxic to mission crew members. Contaminant fate and accumulation in closed-loop water recycle systems is being investigated at the University of Colorado and Martin Marietta as part of the activities of the Center for Space Environmental Health (CSEH), a NASA Specialized Center of Research and Training (NSCORT). The water contaminant distribution research uses a scaled-down physical model of a water (shower, laundry, urine and/or condensate) recycle system to analyze for and model four “indicator” contaminants: viruses and bacteria, nitrogen species, and selected organic and inorganic compounds. The water recycle test bed is comprised of five or more individual water treatment processes linked in a closed loop, and spiked with chemical and biological contaminants. A “systems” approach has been used to define experiments and data which can be used to characterize the long-term, overall performance of the test bed.The water contaminant distribution research at CSEH will augment the shorter-term investigations and individual process research being conducted by NASA at the Ames, Johnson, and Marshall Space Flight Centers.
Contaminant Distribution and Accumulation in Water Recycle Systems
Sae Technical Papers
International Conference On Environmental Systems ; 1992
01.07.1992
Aufsatz (Konferenz)
Englisch
Contaminant accumulation in space water recycle systems
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