A^2/O—膜生物反应器强化生物脱氮除磷中试研究

Pilot Test on Enhanced Biological Nitrogen and Phosphorus Removal by Using A^2/O-MBR

将日本东丽株式会社生产的平板膜组件与A2/O工艺相结合,构建了A2/O—膜生物反应器(A2/O—MBR)强化生物脱氮除磷中试系统,并用于处理城市污水。结果表明,出水COD、BOD5、NH3-N、TN和TP的平均浓度分别为24.9、2.54、0.68、14.3、0.98 mg/L,满足我国《城市污水再生利用景观环境用水水质》标准(GB/T 18921—2002)对氮和磷的要求,并达到了《城镇污水处理厂污染物排放标准》(GB 18918—2002)的一级B标准。

By combining the plate membrane bioreactor from Toray Industries Inc. with the A^2/O process, a pilot test system for enhancing biological nitrogen and phosphorus removal by using the A^2/O - membrane bioreactor （ A^2/O- MBR ） was constructed and used to treat municipal wastewater. The results show that the effluent concentrations of COD, BODs, NH3 - N, TN and TP are 24.9 mg/L, 2.54 mg/L, 0.68 mg/L, 14.3 mg/L, and 0.98 mg/L respectively. Therefore, the quality requirements for phosphorus and nitrogen removal in the Reuse of Urban Recycling Water - Water Quality Standard for Scenic Environment Use（ GB/T 18921 -2002）are met, and I-B criteria specified in the Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant （ GB 18918 - 2002） is achieved.