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- W2365708824 abstract "A sequencing batch reactor( SBR)( R1) with static /aerobic /anoxic regime was used for biological nutrient removal( BNR).To investigate the feasibility of static phase as a substitute for conventional anaerobic phase,the performance of R1 was compared to anaerobic / aerobic / anoxic SBR( R2).The concentrations of influent acetate,ammonia nitrogen( NH+ 4-N) and phosphate( PO3-4-P) in both reactors were 350 mg·L-1,40 mg·L-1 and 12 mg·L-1,respectively,and the hydraulic retention time( HRT) was 12 h.The experimental results demonstrated that the phosphorus( P) removal efficiency in R1( 92.4%) was comparative to R2( 92.1%).However,total nitrogen( TN) removal efficiency of R1( 83.5%) was higher than that of R2( 77.0%).Static phase in R1 still worked as anaerobic phase without stirring,which contributed to rapid P uptake in aerobic phase.The effluent P of 0.91 mg·L-1was achieved through denitrifying P removal in anoxic phase.Simultaneous nitrification and denitrification( SND) in aerobic phase contributed 18.0% of TN elimination in R1,much higher than that of R2( 9.8%).In the post-anoxic phase,microorganisms utilized glycogen as carbon source to drive denitrification,exhibiting denitrification rates( DNRs) of 0.98,0.84 mg·g-1·h-1and 6.62,9.21 mg·L-1of effluent TN in R1 and R2,respectively.Better nitrogen removal efficiency was obtained with anaerobic phase replaced by static phase,and the configuration was further simplified." @default.
- W2365708824 created "2016-06-24" @default.
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- W2365708824 date "2014-01-01" @default.
- W2365708824 modified "2023-09-22" @default.
- W2365708824 title "Biological phosphorus and nitrogen removal in a sequencing batch reactor( SBR) operated in static/aerobic/anoxic regime" @default.
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