低曝气量与实时控制下的常温短程硝化研究

1,1,2(1.,100022;2.,150090):,SBR,,,DOpH,,23,10h40L/h,DO2mg/L,;32L/hDO0.5mg/L,(NO-2/NO-x)34%;28L/hDO0.3mg/L,80%,404856L/h,DOpH,,,95%:SBR;;;:X703.1:A:1000-4602(2006)09-0030-04ShortcutNitrificationatAmbientTemperaturewithLowAerationRateandReal2timeControlBAILu1,WANGShu2ying1,GAOShou2you2(1.CollegeofEnvironmentalandEnergyEngineering,BeijingUniversityofTechnology,Bei2jing100022,China;2.SchoolofMunicipal&EnvironmentalEngineering,HarbinInstituteofTechnology,Harbin150090,China)Abstract:TheeffectoftheaerationrateonnitritenitrogenaccumulationinSBRfedwithdomesticwastewaterwasstudied.Themaintenanceofshortcutnitrificationbyreal2timecontrolwasalsoinvestiga2ted.Theresultsindicatethatundertheconditionsoftemperatureof23andaerationtimeof10hours,thenitritenitrogenaccumulationrates(NO-2/NO-x)are0%,34%and80%,respectivelywhentheaer2ationratesare40L/h,32L/hand28L/h,andtheaverageDOis2mg/L,0.5mg/Land0.3mg/L,respectively.Theaerationratesaregraduallyincreasedto40L/h,48L/hand56L/h,shortcutnitrifica2tiontimeisreducedandthenitritenitrogenaccumulationrateisstabilizedaround95%byon2linemoni2toringDOandpH.Keywords:SBRprocess;shortcutnitrification;lowaerationrate;real2timecontrol:(20377003);(8062006),,,,0322920065CHINAWATER&WASTEWATERVol.22No.9May2006转载中国科技论文在线,,25%45%(),,:,;,,;[1],,[24],DO,SBR[5],DO,,,,1111SBR(1),14L;,,5(3min)1SBRFig.1SchematicdiagramofSBRsystem112(),,11Tab.1RawwastewaterqualitypHCOD/(mgL-1)BOD5/(mgL-1)NH+4-N/(mgL-1)NO-2-N/(mgL-1)NO-3-N/(mgL-1)7.27.815032080160659300.501.5A/O,,113COD:5B-3COD;NO-3-N:;NO-2-N:N-(1-)-;NH+4-N:;MLSS:;DOpH:WTW340i2211,,50%,,(231),(AR):403228L/h,10h1h1,,22Fig.2Effectofaerationrateonammonianitrogenremovalandnitrosationrate40L/h24,,;AR=32L/h,,90%,,53,34%;AR28L/h,139,:22中国科技论文在线:,DO,,,DO,,,[6]75()97(),7563mg/L,10h57%,51%;9768%,78%(3),3Fig.3Variationofnitrogenconcentrationinacycleatdifferentnitrosationrates212,,,[7],,,,pHDO:,,,DO,,,,DO;,,pH,CO2,pHDOpH(45),,4pHFig.4VariationofpHvaluewithaerationtime5DOFig.5VariationofDOvaluewithaerationtime45,pHDO,,(95%),95%213,,404856L/h,,67,12,abcNO-2-NNO-3-N,,AR=40L/h14,78h;AR=48L/h16,67h;AR=56L/h16,5h346,,95%,23922中国科技论文在线=32L/h,,,,,6Fig.6Effectofaeratinrateonammonianitrogenremoval7Fig.7Effectofaerationrateonammonianitrogenremoval,nitrosationrateandreactiontime3(23),SBR28L/h10h,,80%pHDO,DOpH,,95%,95%AR=28L/h404856L/h,,(78)(67)5h:[1],,,.[J].,2004,15(12):7-10.[2],,,.SMSBR[J].,2001,17(11):8-12.[3]PolliceA,TandoiV,LestingiC.Influenceofaerationandsludgeretentiontimeonammoniumoxidationtonitriteandnitrate[J].WaterRes,2002,36(10):2541-2546.[4]SiegristH,ReithaarS,LaisP.Nitrogenlossinanitrifyingrotatingcontactortreatingammoniumrichleachatewithoutorganiccarbon[J].WaterSciTechnol,1998,37(4-5):589-591.[5],,.[J].(),2004,20(3):339-341.[6]KeisukeHanaki.Nitrificationatlowlevelsofdissolvedoxygenwithandwithoutorganicloadinginasuspended2growthreactor[J].WaterRes,1990,24(3):297-302.[7],,,.SBR[J].,2004,4:83-88.:(1981-),,,,:[phone]E-mail:[e-mail]::2006-01-18339,:22中国科技论文在线