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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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