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Nutrient Removal using the Denitrifying Phosphate Accumulating Organisms (dPAOs) and Microbial Community Analysis in Anaerobic-Anoxic Sequencing Batch Reactor  

박용근 (고려대학교 생명공학원)
이진우 (고려대학교 환경시스템 공학과)
이한웅 (고려대학교 생명공학원)
이수연 (고려대학교 생명공학원)
최의소 (고려대학교 토목·환경공학과)
Publication Information
Korean Journal of Microbiology / v.38, no.2, 2002 , pp. 113-118 More about this Journal
Abstract
Laboratory experiments were aimed to evaluate the effect of nitrate as a electron acceptor during the biological phosphorus uptake and to investigate the microbial community. Anaerobic-anoxic sequencing batch reactor (SBR) compared the removal behaviour to anaerobic-oxic SBR, both SBRs maintained lower effluent quality with 1.0 mgp/1. Anaerobic-anoxic SBR was able to remove additional 5.0 to 7.0 mg (P+N)/ι than other biological nutrient removal (BM) system. Therefore, it was proposed that the anaerobic-anoxic SBR was more effective at weak sewage. From the results of the maicrobial community analysis, it can be inferred that denitrifying bacteria and polyphosphate accumulating bacteria coexist in anaerobic-anoxic SBR during stable condition for removing the nitrogen and phosphorus. Particularly, it was suggested that the Zoogloea ramigera in the $\beta$-subclass of proteobacteria and the Alcaligenes defragrans of the Rhodocyclus group in the $\beta$-subclass of proteobacteria played a major role for removing the nitrogen and phosphorus as dPAOs (denitrifying phosphate accumulating organisms).
Keywords
anaerobic-anoxic SBR; biological nutrient removal; dPAO; microbial community analysis;
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