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1、ARTICLEINPRESSWaterResearch38(2004)3340-3348Integratedreal-timecontrolstrategyfornitrogenremovalinswinewastewatertreatmentusingsequencingbatchreactorsJu-HyunKima,*,MeixueChenb,NaohiroKishidac,RyuichiSudoaaCenterforEnvironmentalScienceinSaitama,914,Kamitanadare,Kisai,Saitama347-
2、0115,JapanbStateKeyLaboratoryofEnvironmentalAquaticChemistry,ResearchCenterforEco-EnvironmentalSciences,ChineseAcademyofSciences,Beijing100085,P.O.Box2871,ChinacDepartmentofEnvironmentalResourcesEngineering,WasedaUniversity,3-4-1Okubo,Shinjuku-ku,Tokyo1698555,JapanReceived7May2
3、003;receivedinrevisedform29March2004;accepted11May2004AbstractAnewintegratedreal-timecontrolsystemwasdesignedandoperatedwithfluctuatinginfluentloadsforswinewastewatertreatment.Thesystemwasoperatedwithautomaticadditioncontrolofanexternalcarbonsource,usingreal-timecontroltechnolo
4、gy,whichutilizedtheoxidation-reductionpotential(ORP)andthepHasparameterstocontroltheanoxicphaseandoxicphase,respectively.Thefluctuationsinswinewastewaterconcentrationareextreme;aninfluentwithalowC=Nratioisdeficientinorganiccarbon,andalowcarbonsourcelevelcanlimittheoverallbiolog
5、icaldenitrificationprocess.Consequently,asufficientorganicsourcemustbeprovidedforproperdenitrification.Thefeasibilityofusingswinewasteasanexternalcarbonsourceforenhancedbiologicalnitrogenremovalwasinvestigated.Thereal-timecontrolmadeitpossibletooptimizethequantityofswinewastead
6、dedastheloadfluctuatedfromcycletocycle.TheaverageremovalefficienciesachievedforTOCandnitrogenwereover94%and96%,respectively,usingtheintegratedreal-timecontrolstrategy.r2004ElsevierLtd.Allrightsreserved.Keywords:Denitrification;Externalcarbonsource;ORPReal-timecontrol;SBR;Swinew
7、astewater1.IntroductionSwinewastewaterhaspreviouslybeenconsideredasoneofthemajorsourcesofnitrogenpollutiondis-chargedintotheenvironment.Traditionalbiologicalremovalofnitrogenwasachievedbyasequenceofnitrificationanddenitrificationprocesses.Sincethefluctuationsinswinewastewaterco
8、ncentrationareextremeduetothevaryingpracticesofmanurem
