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2007•Journal of Guangxi Normal UniversityRequires access

Enrichment of DNPAO_S and Its Simultaneous Denitrification and Phosphate Removal

Wang Xiaoying

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Abstract

The selection and enrichment of heterogenous nitrifying bacteria(HNBs) and denitrifying phosphate accumulating organisms(DNPAOS) were cultivated in the same Enhanced Phosphate Removal Reactor(EPER) in a laboratory scale.The reactor was run first under anaerobic/aerobic and then anaerobic/anoxic condition. After the 58 treatment cycles,the proportion of DNPAOS increased and dominaled.TheNH+4Nelimination of more than 93% and phosphate removal of 97% were observed in the anoxic period and the rate of DNPAOS to PAOS was 48%.

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What this paper is about

The selection and enrichment of heterogenous nitrifying bacteria(HNBs) and denitrifying phosphate accumulating organisms(DNPAOS) were cultivated in the same Enhanced Phosphate Removal Reactor(EPER) in a laboratory scale.The reactor was run first under anaerobic/aerobic and then anaerobic/anoxic condition. After the 58 treatment cycles,the proportion of DNPAOS increased and dominaled.TheNH+4Nelimination of more than 93% and phosphate removal of 97% were observed in the anoxic period and the rate of DNPAOS to PAOS was 48%.

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Available abstract

The selection and enrichment of heterogenous nitrifying bacteria(HNBs) and denitrifying phosphate accumulating organisms(DNPAOS) were cultivated in the same Enhanced Phosphate Removal Reactor(EPER) in a laboratory scale.The reactor was run first under anaerobic/aerobic and then anaerobic/anoxic condition. After the 58 treatment cycles,the proportion of DNPAOS increased and dominaled.TheNH+4Nelimination of more than 93% and phosphate removal of 97% were observed in the anoxic period and the rate of DNPAOS to PAOS was 48%.

Key concepts: Denitrifying bacteria, Anoxic waters, Anaerobic exercise, Phosphate, Denitrification, Environmental chemistry, Chemistry, Microbiology

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