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  • development of a simultaneous partial nitrification, anaerobic ammonia oxidation and denitrification (snad) bench scale process for removal of ammonia from effluent of a fertilizer industry

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    • تاریخ ارائه: 1390/01/01
    • تاریخ انتشار در تی پی بین: 1390/01/01
    • تعداد بازدید: 905
    • تعداد پرسش و پاسخ ها: 0
    • شماره تماس دبیرخانه رویداد: -
     a simultaneous partial nitrification, anammox and denitrification (snad) process was developed for the treatment of ammonia laden effluent of a fertilizer industry. autotrophic aerobic and anaerobic ammonia oxidizing biomass was enriched and their ammonia removal ability was confirmed in synthetic effluent system. seed consortium developed from these was applied in the treatment of effluent in an oxygen limited bench scale snad type (1l) reactor run at ambient temperature (∼30 °c). around 98.9% ammonia removal was achieved with ammonia loading rate 0.35kgnh4+-n/m3 day in the presence of 46.6 mg/l cod at 2.31 days hydraulic retention time. qualitative and quantitative analysis of the biomass from upper and lower zone of the reactor revealed presence of autotrophic ammonia oxidizing bacteria (aob), planctomycetes and denitrifiers as the dominant bacteria carrying out anoxic oxidation of ammonia in the reactor. physiological and molecular studies strongly indicate presence of anammox bacteria in the anoxic zone of the snad reactor.

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