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Record 1 of 24162
The Exploration Water Recovery System
Author and Affiliation:
ORourke, Mary Jane E.(NASA Marshall Space Flight Center, Huntsville, AL, United States)
Carter, Layne(NASA Marshall Space Flight Center, Huntsville, AL, United States)
Holder, Donald W.(NASA Marshall Space Flight Center, Huntsville, AL, United States)
Tomes, Kristin M.(NASA Marshall Space Flight Center, Huntsville, AL, United States)
Abstract: The Exploration Water Recovery System is designed towards fulfillment of NASA s Vision for Space Exploration, which will require elevation of existing technologies to higher levels of optimization. This new system, designed for application to the Exploration infrastructure, presents a novel combination of proven air and water purification technologies. The integration of unit operations is modified from that of the current state-of-the-art water recovery system so as to optimize treatment of the various waste water streams, contaminant loads, and flow rates. Optimization is achieved primarily through the removal of volatile organic contaminants from the vapor phase prior to their absorption into the liquid phase. In the current state-of-the-art system, the water vapor in the cabin atmosphere is condensed, and the volatile organic contaminants present in that atmosphere are absorbed into the aqueous phase. Removal of contaminants the5 occurs via catalytic oxidation in the liquid phase. Oxidation kinetics, however, dictate that removal of volatile organic contaminants from the vapor phase can inherently be more efficient than their removal from the aqueous phase. Taking advantage of this efficiency reduces the complexity of the water recovery system. This reduction in system complexity is accompanied by reductions in the weight, volume, power, and resupply requirements of the system. Vapor compression distillation technology is used to treat the urine, condensate, and hygiene waste streams. This contributes to the reduction in resupply, as incorporation of vapor compression distillation technology at this point in the process reduces reliance on the expendable ion exchange and adsorption media used in the current state-of-the-art water recovery system. Other proven technologies that are incorporated into the Exploration Water Recovery System include the Trace Contaminant Control System and the Volatile Removal Assembly.
Publication Date: Jan 01, 2006
Document ID:
20060048223
(Acquired Oct 16, 2006)
Subject Category: SPACE SCIENCES (GENERAL)
Document Type: Conference Paper
Meeting Information: 36th International Conference on Environmental Systems; 17-20 Jul. 2006; Norfolk, VA; United States
Financial Sponsor: NASA Marshall Space Flight Center; Huntsville, AL, United States
Organization Source: NASA Marshall Space Flight Center; Huntsville, AL, United States
Description: 2p; In English
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: No Copyright
NASA Terms: WATER RECLAMATION; WATER VAPOR; CABIN ATMOSPHERES; LIQUID PHASES; VAPOR PHASES; FLOW VELOCITY; REACTION KINETICS; SPACE EXPLORATION; TRACE CONTAMINANTS; ION EXCHANGING
Availability Source: Other Sources
Availability Notes: Abstract Only
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