1993-07-01

Breadboard Advanced Oxidation Process for the Treatment of Reclaimed Water 932033

The post-treatment purification of water recovered from hygiene, metabolic and humidity condensate waste water is essential to regenerative water reclamation technology life support systems. Lynntech, Inc., working with NASA-JSC has developed an electrochemical reactor that generates ozone and hydrogen peroxide. The electrochemical reactor is the basis for an advanced oxidation process in which electrochemically generated oxidants are used in combination with ultraviolet irradiation to produce hydroxyl radicals in a reclaimed water stream which in turn oxidize dissolved organic impurities to carbon dioxide. This paper describes the design and fabrication of an automated breadboard reactor system based on this principle. The system operates at low temperature and requires no chemical expendables. Kinetics and performance test results are presented showing the removal of organic impurities and disinfection features to produce potable water quality. Size, weight and power requirements are discussed. The breadboard system will be installed and delivered in NASA-JSC's regenerative water recovery test bed facility for evaluation and comparison with other candidate technologies.

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