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- W2371401995 abstract "Lack of carbon source and low nitrogen removal efficiency occurred when conventional biological nitrogen removal processes were used to treat low carbon to nitrogen ratio(C/N) saline wastewater.A step-feed sequencing batch reactor(SBR) was proposed to make full use of the influent carbon source and reduce external carbon source addition.Five different step-feed modes were compared in terms of nitrogen removal efficiency,N2O emission and conversion rate.The results showed that high nitrogen removal efficiency was achieved in all five step-feed modes when sufficient external carbon source was provided.However,the N2O conversion rate of the three-step mode with the influent flow ratio of 1 ∶ 2 ∶ 3 reduced by 46% compared to that of the one-step mode.Regarding to the two-step mode,the highest N2O conversion rate of 5.1% was observed at the influent flow ratio of 1 ∶ 1,and the lowest that of 2.5% occurred at the influent flow ratio of 1 ∶ 2.Additionally,NO-x-N was accumulated at the end of the last aerobic stage,and was reduced from 41.5 mg/L(one-step mode) to 23.3 mg/L(two-step mode) and 19.7 mg/L(three-step mode),indicating that the external carbon source and denitrification time could be saved.Taken together,high nitrogen removal efficiency,low operation cost and low N2O emission could be achieved using step-feed operational modes in SBR when treating low C/N ratio saline wastewater." @default.
- W2371401995 created "2016-06-24" @default.
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- W2371401995 date "2013-01-01" @default.
- W2371401995 modified "2023-09-28" @default.
- W2371401995 title "Nitrogen Removal Efficiency of Step-feed SBR in Treatment of Low C/N Saline Wastewater" @default.
- W2371401995 hasPublicationYear "2013" @default.
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