For prolonged manned spaceflight, recycling of wastewater is critical to minimize payload costs. We have constructed a pilot-scale, closed-loop water recycling system (CLWRS). Due to slow process dynamics, evaluation of multiple experimental scenarios is very time-consuming. To accelerate evaluation, we have developed mathematical models of the individual reactors, as well as a process model of the pilot plant, which combines nitrification, denitrification, recycle, and degassing steps. The simulation accurately reproduces the 35% total nitrogen (TN) reduction observed experimentally at a 20/1 recycle ratio. Both experiments and simulations indicate that biological CLWRS have significant potential for long-duration manned space flight.


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    Title :

    Modeling a Biological Closed Loop Water Recycling System for Prolonged Manned Space Flight


    Additional title:

    Sae Technical Papers


    Contributors:

    Conference:

    International Conference On Environmental Systems ; 2004



    Publication date :

    2004-07-19




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




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