The robustness of ANAMMOX process under the transient oxytetracycline (OTC) shock

Bioresource Technology
Qian-Qian ZhangRen-Cun Jin

Abstract

The effect of transient oxytetracycline (OTC) shock on the stability of anaerobic ammonium oxidation (ANAMMOX) process was evaluated in the present study. The shock test was implemented with 155-1731mgL(-1) OTC, lasting for 1 to 3-fold hydraulic retention times, under the nitrogen loading rate (NLR) of 6.72 and 13.4kgm(-3)d(-1). The response of the process was divided into shock and recovery stage and the performance under the stress was indicated by stability index and granule characteristic. In the shock period, nitrogen removal rate (NRR) was ranged from 12.1 to 12.1-4.04kgm(-3)d(-1). The specific ANAMMOX activity (SAA) and heme c content, were respectively reduced by 1.4% and 17.6-29.4%. Foremost, the OTC shock was restorable and the recovery lasted for 4-353h. The robustness of ANAMMOX process was dependent on OTC level, duration of shock and NLR applied.

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Citations

Jul 30, 2014·Bioresource Technology·Hui ChenRen-Cun Jin
Apr 4, 2015·Journal of Environmental Management·Hui ChenRen-Cun Jin
Apr 30, 2014·Environmental Science. Processes & Impacts·Han GaoGeorge F Wells

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