Simulated wastewater, known as early surface mission wastewater, treated in previous experiments at JSC and TTU included urinal flush water, shower water, humidity condensate, oral hygiene water, and hand wash water. In reality, there is a difference between the early surface mission wastewater and the International Space Station wastewater. The ISS does not have a shower or hand wash, which contributes approximately 59 percent of the make-up water treated. The average influent ammonia concentration in the simulated wastewater treated by the TTU water reclamation system frequently exceeds 500 mg/L. Removal of the shower make-up water in simulated wastewater will result in a significant increase in the ammonia concentration, resulting in higher influent pH values and ammonia concentrations that may be inhibitory. Biological treatment technologies have suitably treated the diluted waste stream but a more concentrated waste stream may present a greater challenge. Therefore, the performance of a biological wastewater treatment system, consisting of a nitrifying membrane-aerated biological reactor (AMR) coupled with a denitrifying packed bed (PB) reactor, was evaluated. Treatment goals were 50 percent ammonia reduction and 95 percent DOC removal, which had been achieved with previous systems.The AMR-PB system has been in operation for several months. For an average DOC influent concentration of 1236 mg/L, the system achieved 91 percent DOC removal. Approximately 32 percent of the influent total nitrogen (1762 mg/L) was removed during treatment. The results of the study indicated treatment efficiency was related to the characteristics of the wastewater. DOC and alkalinity were limiting in the wastewater.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Biological Treatment of a Urine-Humidity Condensate Waste Stream


    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




    Systems for Water Reclamation from Humidity Condensate and Urine for Space Station

    Pinsky, B. Ja. / Abramov, G. Kh. / Sinjak, Ju. E. et al. | SAE Technical Papers | 1994


    Chemistry and Kinetics of I2 Loss in Urine Distillate and Humidity Condensate

    Olivadoti, J. Troy / Atwater, James E. / Sauer, Richard L. et al. | SAE Technical Papers | 1992


    Characterization of Spacecraft Humidity Condensate

    Schultz, John R. / Sauer, Richard L. / Muckle, Susan V. | SAE Technical Papers | 1993


    Characterization of Spacecraft Humidity Condensate

    United States; National Aeronautics and Space Administration / United States; Air Force | British Library Conference Proceedings | 1993


    Water Supply Based on Water Reclamation from Humidity Condensate and Urine on a Space Station

    Grigoriev, A. I. / Pinsky, B. Ja. / Grigorov, E. I. et al. | SAE Technical Papers | 1996