改进型MBR对校园生活污水的硝化效果及影响因素吴晓坤

MBR200093MBR。NH+4－N19．25～58．37mg/L、MLSS3500～4500mg/L、＞10℃、pH6．7～8．7、DO＜0．5mg/L、DO1．5～2．5mg/L、200%～300%NH+4－N1．28mg/L《》GB3838—2002Ⅳ。X703C1000－4602201007－0074－03NitrificationandInfluencingFactorsofModifiedMBRforTreatmentofDomesticSewagefromCampusWUXiao-kunXUGuo-xunBUJingCHENChaoCollegeofUrbanConstructionandEnvironmentalEngineeringUniversityofShanghaiforScienceandTechnologyShanghai200093ChinaAbstractThemodifiedMBRwasusedtotreatlow-concentrationdomesticsewagefromcampusandthenitrificationandinfluencingfactorswereinvestigated．WhentheinfluentNH+4－Nis19．25to58．37mg/LandnosludgeisdischargedtheoptimalnitrificationconditionsareMLSSof3500to4500mg/Ltemperatureofmorethan10℃pHof6．7to8．7DOoflessthan0．5mg/Linanoxiczoneand1．5to2．5mg/Linaerobiczoneandthesludgereturnratioof200%to300%．UnderthoseconditionstheaverageeffluentNH+4－Nis1．28mg/LwhichmeetsthefourthlevelofEnvironmentalQualityStandardsforSurfaceWaterGB3838－2002．KeywordsmembranebioreactornitrificationinfluencingfactorMBRHRTSRT1、2。MBR、、、MBR。。MBR。11.11PLC、。1m31．7m31．5m3。0．05～0．65μm80m2。·47·26720104CHINAWATER＆WASTEWATERVol．26No．7Apr．2010。MBR1．0m3/h。1Fig．1Schematicdiagramofexperimentalsetup1.2。COD、NH+4－N、TNTP92～228、19．25～58．37、21．26～79．54、2．23～4．12mg/L5．73～218NTUpH6．7～8．7。1.3。NH+4－NTN—NO－3－NCODDOMLSS。22.1NH+4－N4NH+4－N2。NH+4－N19．25～58．37mg/L35．24mg/LNH+4－N1．46mg/LNH+4－N95．8%NH+4－N1．28mg/LNH+4－N96．36%98．8%。NH+4－NNH+4－N90%。2NH+4－NFig．2RemovaleffectofNH+4－NbyMBR2.2NO－2－NNO－3－NNO－2－NNO－3－N。NO－2－N0．02～0．08mg/LNO－2－N0．5mg/LNO－2－N0～0．07mg/LNO－2－N。NO－3－NNO－3－N。NO－3－NTN39．53%。2.3①。。MLSS6000mg/LNH+4－NNH+4－N。SMPNH+4－N3。MLSS3500～4500mg/L。MBRTOCEPS。。·57·．watergasheat．comMBR267。②＞15℃NH+4－N90%。20～30℃15℃5℃。15℃NH+4－N85%。③DO＜0．5mg/L、DO2．5～3．5mg/L、MLSS3000～4500mg/L、＞20℃。200%300%NH+4－N1mg/LNH+4－NNH+4－NNH+4－N。④CODCOD。CODNH+4－N。。⑤DODODO。DO2．5～3．5mg/L1．5～2．5mg/LNH+4－N98%93%NH+4－N。DO。DODO1．5～2．5mg/L。⑥pH。pHpHNH+4－NNO－2－NNO－3－NNH+4NH3NH3H+pH。pHpHpH。pH6．7～8．7。3①NH+4－N19．25～58．37mg/L35．24mg/LMBRNH+4－N1．28mg/L《》GB3838—2002ⅣNH+4－N。②MLSS＞6000mg/LNH+4－NMBR200%～300%、DO1．5～2．5mg/L。COD。1．MBRJ．200824131－4[e-mail]2009－10－05·67·267．watergasheat．com