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2003•Unpublished venueRequires access

Study on Removal of Nitrogen and Phosphorus from City Wastewater with SBR Process

Yu Xiao

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Abstract

To lower the trend of serious eutrophication of reservoirs ,this paper studied the ability of SBR (Sequencing Batch Reactor) process to remove nitrogen and phosphorus from city wastewater. The results showed that under the experimental condition of pH 7.5～8.5, the aeration time used 3.5 hours ,when concentration of COD?TP?TN in entering water was 105～143 mg/L, 1.6～6.45 mg/L, 64.96～82.16 mg/L respectively,the efficiency of COD, nitrogen and phosphorus removal rate reached about 74.05 %～100 %?32.80 %～88.57 %?95.44 %～98.59 % respectively.

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What this paper is about

To lower the trend of serious eutrophication of reservoirs ,this paper studied the ability of SBR (Sequencing Batch Reactor) process to remove nitrogen and phosphorus from city wastewater. The results showed that under the experimental condition of pH 7.5～8.5, the aeration time used 3.5 hours ,when concentration of COD?TP?TN in entering water was 105～143 mg/L, 1.6～6.45 mg/L, 64.96～82.16 mg/L respectively,the efficiency of COD, nitrogen and phosphorus removal rate reached about 74.05 %～100 %?32.80 %～88.57 %?95.44 %～98.59 % respectively.

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Available abstract

To lower the trend of serious eutrophication of reservoirs ,this paper studied the ability of SBR (Sequencing Batch Reactor) process to remove nitrogen and phosphorus from city wastewater. The results showed that under the experimental condition of pH 7.5～8.5, the aeration time used 3.5 hours ,when concentration of COD?TP?TN in entering water was 105～143 mg/L, 1.6～6.45 mg/L, 64.96～82.16 mg/L respectively,the efficiency of COD, nitrogen and phosphorus removal rate reached about 74.05 %～100 %?32.80 %～88.57 %?95.44 %～98.59 % respectively.

Key concepts: Phosphorus, Aeration, Eutrophication, Nitrogen, Wastewater, Sequencing batch reactor, Pulp and paper industry, Chemistry

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