The Nitrogen and Phosphorus Removal and Sludge Yield Comparative Study under Anaerobic/Aerobic and Anaerobic/Anoxic Conditions

Abstract:

The nitrogen and phosphorus removal efficiency and effect of different electron acceptors (O2 and NO3-) on the sludge yield were studied through experiments in two SBRs (Sequencing Batch Reactors ) in this paper. The results showed that two systems both had good decontamination effect; the theory value of sludge yield (It was 0.435gVSS/gCOD and 0.402gVSS/gCOD for anaerobic /aerobic and anaerobic/anoxic condition, respectively) was higher than the actual value (It was 0.335gVSS/gCOD and 0.321g VSS/gCOD for anaerobic/aerobic and anaerobic/anoxic condition, respectively); There was no significant difference for the sludge yield under anaerobic/aerobic and anaerobic/anoxic conditions, because the endogenesis respiration of sludge under anaerobic/aerobic condition was stronger consequently more sludge being attenuated (Attenuation coefficient was 0.0081 and 0.0026 for anaerobic/aerobic and anaerobic/anoxic condition, respectively).

• Periodical: Advanced Materials Research (Volumes 610-613)
• Pages: 2068-2073
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.610-613.2068
• Online since: December 2012
• Authors: Ya Jing Li, Li Ping Sun, Min Ji
• Keywords: Anaerobic/aerobic(A/O), Anaerobic/anoxic(A/A), Electron Acceptor, Nitrogen and Phosphorus Removal, Sludge Yield

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