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1、.序批式反应器处理工业废水的牛奶生物膜系统SequencingbatchreactorbiofilmsystemfortreatmentofmilkindustrywastewaterSuntudSirianuntapiboona,*,NarumonJeeyachokb,RarintornLarplaiaaDivisionofEnvironmentalTechnology,SchoolofEnergyandMaterials,KingMongkut’sUniversityofTechnologyThonburi(KMUTT),Thungkru,Bangmod,Bangkok10140,Tha
2、ilandbDivisionofBiochemicalTechnology,SchoolofBioresourcesandTechnology,KingMongkut’sUniversityofTechnologyThonburi,Thungkru,Bangmod,Bangkok10140,ThailandReceived22October2003;revised27November2004;accepted19January2005Availableonline21April2005AbstractAsequencingbatchreactorbiofilm(MSBR)systemwasm
3、odifiedfromtheconventionalsequencingbatchreactor(SBR)systembyinstalling2.7m2surfaceareaofplasticmediaonthebottomofthereactortoincreasethesystemefficiencyandbio-sludgequalitybyincreasingthebio-sludgeinthesystem.TheCOD,BOD5,totalkjeldahlnitrogen(TKN)andoil&greaseremovalefficienciesoftheMSBRsystem,und
4、erahighorganicloadingof1340gBOD5/m3d,were89.3G0.1,83.0G0.2,59.4G0.8,and82.4G0.4%,respectively,whiletheywereonly87.0G0.2,79.9G0.3,48.7G1.7and79.3G10%,respectively,intheconventionalSBRsystem.Theamountofexcessbio-sludgeintheMSBRsystemwasabout3timeslowerthanthatintheconventionalSBRsystem.Thesludgevolum
5、eindex(SVI)oftheMSBRsystemwaslowerthan100ml/gunderanorganicloadingofupto1340gBOD5/m3d.However,theMSBRunderanorganicloadingof680gBOD5/m3dgavethehighestCOD,BOD5,TKNandoil&greaseremovalefficienciesof97.9G0.0,97.9G0.1,79.3G1.0and94.8G0.5%,respectively,withoutanyexcessbio-sludgewaste.TheSVIofsuspendedbi
6、o-sludgeintheMSBRsystemwasonly44G3.4ml/gunderanorganicloadingof680gBOD5/m3d.q2005ElsevierLtd.Allrightsreserved.Keywords:Sequencingbatchreactor(SBR);Bio-film;Milkindustrywastewater;Excessbio-sludge1.IntroductionTheannuallyincreasingmilkconsumptioninThailandhasdemandedanincreaseinmilkproductionresult
7、inginanincreasingamountofindustrialwastewater(DepartmentofIndustrialWorks,2001,Informationcenter).MilkindustrywastewatercontainshighconcentrationsofCOD,BOD5andTKNofupto11,000,5900and720mg/l,respectively页.(V
