MBR中DO对同步硝化反硝化的影响-db9c2ace5f0e7cd185253663

MBR中DO对同步硝化反硝化的影响-db9c2ace5f0e7cd185253663MBR中DO对同步硝化反硝化的影响邹联沛,张立秋,王宝贞,王琳(哈尔滨工业大学市政环境工程学院,黑龙江哈尔滨150090)摘要:膜生物反应器(MBR)中,在DO为1mg/L左右,MLSS为8000～9000mg/L,温度为24℃,进水pH值为7.2,COD、NH3-N分别为523～700mg/L和17.24～24mg/L的相对稳定条件下,对COD、NH3-N、TN的去除率分别为96%、95%、92%。详细分析了在控制DO的条件下,MBR发生同步硝化、反硝化的原因,并提出了在单级好氧反应器中控制DO可发生短程硝化—反硝化生物脱氮的机制。关键词:膜生物反应器;同步硝化反硝化;短程硝化—反硝化生物脱氮中图分类号:X703文献标识码:A文章编号:1000-4602(2001)06-0010-05EffectofDOonSimultaneousNitrificationandDenitrificationinMBRZOULian2pei,ZHANGLi2qiu,WANGBao2zhen,WANGLin(SchoolofMunicipal&EnvironmentalEngineering,HarbinInstituteofTechnology,Harbin150090,China)Abstract:Inthemembranebioreactor,undertherelativestableconditionsofDO1mg/L,MLSS8000～9000mg/L,temperature24℃,influentpH7.2,COD523～700mg/LandNH4+17.24～24mg/L,96%,95%,and92%areachievedrespectivelyfortheremovalofCOD,NH4+,andTN.Thereasonofsimul2taneousnitrificationanddenitrificationoccurringinMBRundercontrolledDOisdescribedindetails.ThemechanismthatshortcutnitrificationanddenitrificationmayoccurundercontrolledDOinasi