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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
2、,Bangkok10140,ThailandbDivisionofBiochemicalTechnology,SchoolofBioresourcesandTechnology,KingMongkut’sUniversityofTechnologyThonburi,Thungkru,Bangmod,Bangkok10140,ThailandReceived22October2003;revised27November2004;accepted19January2005Availableonline21April2005AbstractAsequencing
3、batchreactorbiofilm(MSBR)systemwasmodifiedfromtheconventionalsequencingbatchreactor(SBR)systembyinstalling2.7m2surfaceareaofplasticmediaonthebottomofthereactortoincreasethesystemefficiencyandbio-sludgequalitybyincreasingthebio-sludgeinthesystem.TheCOD,BOD5,totalkjeldahlnitrogen(TK
4、N)andoil&greaseremovalefficienciesoftheMSBRsystem,underahighorganicloadingof1340gBOD5/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-sludgeintheMSBRsys
5、temwasabout3timeslowerthanthatintheconventionalSBRsystem.Thesludgevolumeindex(SVI)oftheMSBRsystemwaslowerthan100ml/gunderanorganicloadingofupto1340gBOD5/m3d.However,theMSBRunderanorganicloadingof680gBOD5/m3dgavethehighestCOD,BOD5,TKNandoil&greaseremovalefficienciesof97.9G0.0,97.9G
6、0.1,79.3G1.0and94.8G0.5%,respectively,withoutanyexcessbio-sludgewaste.TheSVIofsuspendedbio-sludgeintheMSBRsystemwasonly44G3.4ml/gunderanorganicloadingof680gBOD5/m3d.q2005ElsevierLtd.Allrightsreserved.Keywords:Sequencingbatchreactor(SBR);Bio-film;Milkindustrywastewater;Excessbio-sl
7、udge1.IntroductionTheannuallyincreasingmilkconsumptioninThailandhasdemandedanincreaseinmilkproductionresultinginanincreasingamountofindustrialwastewater(DepartmentofIndustrialWorks,2001,Informationcenter).MilkindustrywastewatercontainshighconcentrationsofCOD,BOD5andTKNofupto11,000
8、,5900and720mg/l,respectively(Vira
