倒置A^2/O+A/O工艺用于某城市污水厂二期扩建工程  

Application of Reversed A^2/O + A/O Process in the Second-phase Extension Project of a Municipal Wastewater Treatment Plant

作　　者：刘加强[1] 张建昆[1] 李莹[1] 韦帮森 LIU Jia-qiang;ZHANG Jian-kun;LI Ying;WEI Bang-sen(School of Environmental Engineering,Xuzhou Institute of Technology,Xuzhou 221111,China;Xuzhou Municipal Engineering Design Institute Co.Ltd.,Xuzhou 221002,China)

机构地区：[1]徐州工程学院环境工程学院,江苏徐州221111 [2]徐州市市政设计院有限公司,江苏徐州221002

出　　处：《中国给水排水》2018年第22期55-58,共4页China Water & Wastewater

基　　金：徐州工程学院校研课题(XKY2016230);住房和城乡建设部项目(00730091;2010-k7-4)

摘　　要：某城市污水处理厂一期设计规模为2×10~4m^3/d,采用传统A^2/O工艺,出水水质很难达到《城镇污水处理厂污染物排放标准》(GB 18918—2002)一级A标准。二期扩建工程设计规模为3×10~4m^3/d,在总结一期工程运行经验基础上,提出倒置A^2/O+A/O工艺,并辅以化学除磷及接触过滤等深度净化处理工艺,确保出水稳定达标排放。二期扩建工程投入运营后,出水COD、SS、氨氮、TP平均浓度分别为34. 5、7. 8、3. 8、0. 34 mg/L,稳定达到一级A排放标准。The first-phase design capacity of a wastewater treatment plant was 2 × 10 4 m3/d. With the traditional A2/O process, the effluent quality was very difficult to meet the first class A criteria specified in the Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant （GB 18918 - 2002）. The design capacity of second-phase extension project was 3 × 10 4 m3/d, on the basis of operation experience of the first-phase project, the combination process of reversed A2/O ＋ AO followed by the advanced treatment process of chemical phosphorous removal and contact filtration were adopted in ensure the stable effluent quality. After second-phase extension project was put into operation, the effluent concentrations of COD, SS, ammonia nitrogen, TP were 34.5 mg/L, 7.8 mg/L, 3.8 mg/L, 0.34 mg/L, respectively, and all effluent indexes could meet the first level A criteria.

关 键 词：倒置A^2/O A/O 脱氮除磷 

分 类 号：TU992.3[建筑科学—市政工程]