不同有机负荷和含盐量下丝状菌颗粒污泥的特性

1,2,1,2,1,2(1.,710055;2.,710055):(SBR)[1.6kgCOD/(m3d)8.0kgCOD/(m3d)](2.5%5%),(5%)45d,R2[8.0kgCOD/(m3d),2.5%]TOC95.6%99.5%95.3%99.1%;R4[8.0kg2COD/(m3d),5%]TOC97.2%99.0%94.5%98.1%;:;;:X703.1:A:1000-4602(2008)21-0009-04CharacteristicsofFilamentousAerobicGranularSludgeunderDifferentOrganicLoadingRatesandSalinitiesLIZhi2hua1,2,ZHANGYong1,2,WANGXiao2chang1,2(1.SchoolofEnvironmentalandMunicipalEngineering,XianUniversityofArchitectureandTechnology,Xian710055,China;2.KeyLaboratoryofNorthwestWaterResources,EnvironmentandEcologyMinistryofEducation,XianUniversityofArchitectureandTechnology,Xian710055,China)Abstract:Thegranulationandpollutantsremovalefficiencyofaerobicgranularsludgeattheor2ganicloadingratesof1.6kgCOD/(m3d)and8.0kgCOD/(m3d)andatthesalinitiesof2.5%and5%wereinvestigatedinsequencingbatchreactors(SBRs).Itisfoundthatahighersalinitycanforcethegranulestogrowinacompactpatternratherthananemanativeoneintermsofmorphologyandporosi2ty.TheremovalratesofTOCandammoniadecreasefrom95.6%and99.5%to95.3%and99.1%inR2withtheloadingrateof8.0kgCOD/(m3d)andthesalinityof2.5%,andfrom97.2%and99.0%to94.5%and98.1%inR4withtheloadingrateof8.0kgCOD/(m3d)andthesalinityof5%re2spectivelywhenfilamentousbacteriapredominateaftertheexperimentof45days.However,thefilamen2tousgranulesaremoreefficientforremovalofpollutantsathighsalinitythanatlowone.Keywords:aerobicgranularsludge;salinity;filamentousbacteria:(50708089);(863)(2006AA06Z328),92421200811CHINAWATER&WASTEWATERVol.24No.21Nov.2008[12],,,[3][47],,1111R1R2R3R4,50mm,1000mm,(H/D)20,2L,;,,1L4,(251),3h,::15min5min,157min167min;:5min,167min,11Tab.1Operationconditionindifferentstagesmin21571671556216756112(A2/O),,30004000mg/L113,,(10d)COD2000mg/L,:CH3COONa3H2O1291.50mg/L,945.00mg/L,MgSO47H2O88.56mg/L,NH4Cl198.39mg/L,KH2PO428.56mg/L,K2HPO43H2O73.08mg/LR1R3COD400mg/L,:CH3COONa3H2O258.30mg/L,189.00mg/L,MgSO47H2O88.56mg/L,NH4Cl198.39mg/L,KH2PO428.56mg/L,K2HPO43H2O73.08mg/L;R2R411Fig.1Variationofsalinityindifferentreactors114,,:v=4gd(1-)(p-w)3CDw(1),1CD,[8]pwd,TOCSS;,R2R4,,TOC2211,25,R2R4,R1R3,R1R3COD400mg/L,R2R42000012421[9],,pH(4.5)(10)[1011],R2R4COD2000mg/L,(8mg/L),C/N10,pH6.07.5,(251),,,[12],,[3],34,R2R4,,R4R2,,46(15d),,R2,,;R4,R2,,R2,R4,,,,,,R2R4TOC22,46d,R2R4,,R2,R4,,R276%,R457%,2R2R4TOCFig.2SludgeporosityandTOCremovalefficiencyinR2andR4212R2R4SS33R2R4SSFig.3AmmoniaremovalefficiencyandeffluentSSinR2andR423,,TOC,47,TOC,SS,,,,TOC(4),3,R2SS,R4,47,R4SSR2,R2SSR447,R2R4SS,R4R211:2421,R4R247,R2SS,R4,R2,,;R4,,,4R2R4TOCFig.4TOCandammonianitrogenremovalefficienciesbyfilamentousbacteriainR2andR43,TOC,SS,,:[1]BeunJJ,HendriksA,vanLoosdrechtMCM,etal.Aerobicgranulationinasequencingbatchreactor[J].WaterRes,1999,33(10):2283-2290.[2],,,.[J].,2004,20(11):46-48.[3]LiuY,LiuQS.Causesandcontroloffilamentousgrowthinaerobicgranularsludgesequencingbatchreactors[J].BiotechnolAdv,2006,24(1):115-127.[4]McSwainBS,IrvineRL,WildererPA.Theeffectofin2termittentfeedingonaerobicgranulestructure[J].Wa2terSciTechnol,2004,49(11-12):19-25.[5]SchwarzenbeckN,BorgesJM,WildererPA.Treatmentofdairyeffluentsinanaerobicgranularsludgesequen2cingbatchreactor[J].ApplMicrobiolBiotechnol,2005,66(6):711-718.[6]TayJH,LiuQS,LiuY.Microscopicobservationofaer2obicgranulationinsequentialaerobicsludgeblanketre2actor[J].JApplMicrobiol,2001,91(1):168-175.[7]MorgenrothE,SherdenT,vanLoosdrechtMCM,etal.Aerobicgranularsludgeinasequencingbatchreactor[J].WaterRes,1997,31(12):3191-3194.[8]MajumderAK,BarnwalJP.Acomputationalmethodtopredictparticlesfreeterminalsettlingvelocity[J].IE(I)Journal-MN,2004,85:17-19.[9]ZhengYu2Ming,YuHan2Qing,LiuShuang2Jiang.For2mationandinstabilityofaerobicgranulesunderhighor2ganicloadingconditions[J].Chemosphere,2006,63(10):1791-1800.[10]JenkinsD,RichardMG,DaiggerG.CausesandControlofActivatedSludgeBulkingandFoaming(2nded)[M].BocaRaton:LewisPublishers,1993.[11],,.[J].,2008,36(1):33-35.[12],,.[J].,2008,29(30):696-702.:(1976-),,,,,:15902942346E-mail:[e-mail]:2008-07-25212421