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Pilot test on biological nitrogen and phosphorus removal by using reverse A2O-MBR process to treat wastewater
Authors: LIU Shenggen, DAI Haiping, KE Yongwen
Units: Tianjin Motimo Membrane Technology Co.,Ltd Research and Development Center Tianjin ,300457,China
KeyWords: reverse A2O;MBR; nitrogen and phosphorus removal; wastewater treatment; pilot test; membrane cleaning
ClassificationCode:TQ028.8; X703.3
year,volume(issue):pagination: 2014,34(1):91-95

Abstract:
 With the hollow fiber membrane modules from Tianjin MTIMO Membrane Technology Co., Ltd to construct MBR system, the own-designed and manufactured pilot test on biological Nitrogen and Phosphorus Removal by using Reverse A2O-MBR process to treat wastewater was studied. The research results show that the average effluent concentrations of COD,NH3-N,TN and TP are 22.23mg/L,1.89mg/L,14.96mg/L,and 0.38mg/L respectively. The average removal rate of COD,NH3-N,TN and TP are 91.49%,94.5%,63.4%,and 87.3% respectively. The NTU of effluent was less than 0.19. Steadily operating data shows that the average effluent concentrations are achieving I-A criteria specified in the Discharge standard of pollutants for municipal wastewater treatment plant (GB18918-2002), and normally the average effluent concentrations are achieving the I-B criteria. The contaminate membrane modules were cleaned by the composite alkali substances or the composite alkali-acid substances.TMP(Trans-membrane pressure)are from 43kpa,73kpa falling to 12kpa,25kpa respectively. The recoveries are 31kpa, 48kpa respectively. The mass fluxes of membrane modules are recovered.

Funds:
国家水体污染控制与治理科技重大专项资助(2011ZX07317-001)

AuthorIntro:
刘圣根(1983 —),男,江西宜春人,硕士,研究方向为膜法污水处理研究. *通讯联系人

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