The start-up of denitrifying phosphorus removal system by using nitrite as electron acceptor

3rd International Conference on Water Resource and Environment

地球科学;生态环境科学

Li, W.^1 ; Liu, J.^1 ; Sun, H.Z.^1 ; Fu, J.X.^1 ; Gao, Y.^2 ; Sun, J.^3

Municipal and Environmental Engineering Institute, Shenyang Jianzhu University, Shenyang

110168, China^1

Shenyang Xuqiang Business Management Co., Ltd, 110168, China^2

Guangdong Zhongtian Municipal Engineering Design Co., Ltd, 550081, China^3

关键词: Anoxic phosphorus uptake;    Denitrifying phosphorus removal;    Denitrifying polyphosphate-accumulating organisms;    Domestic wastewater;    Effluent concentrations;    Pollutant discharges;    Sequencing batch reactors;    Urban sewage treatment;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/82/1/012083/pdf
DOI  :  10.1088/1755-1315/82/1/012083

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

The inoculation of short-cut denitrifying polyphosphate-accumulating organisms (DPAOs) mainly included two-phase inoculation and three-phase inoculation. The short-cut denitrifying phosphorus removal bacteria were quickly inoculated by sequencing batch reactor (SBR) to treatment domestic wastewater. The results showed that the average effluent concentration of TP was 0.85 mg/L after 132 cycles by 44 days in two-phase inoculation. The removal rates of NO2--N, TP and COD were 94.73%, 95.47% and 89.96% after 126 cycles by 42 days in three-phase inoculation, and the effluent concentrations were separately 1.31 mg/L, 0.45 mg/L and 17.07 mg/L, which reached the first A class requirement of Urban sewage treatment plant pollutant discharge standard. It was indicated that the efficiency of three-phase inoculation was higher. Anoxic phosphorus uptake was influenced seriously by anaerobic residual carbon, and it was the difference of the two inoculations.