不同有机负荷和含盐量下丝状菌颗粒污泥的特性李志华

李志华1,2,　张　勇1,2,　王晓昌1,2(1.西安建筑科技大学环境与市政工程学院,陕西西安710055;2.西安建筑科技大学西北水资源与环境生态教育部重点实验室,陕西西安710055)　　　:　研究了序批式反应器(SBR)中好氧颗粒污泥在不同有机负荷[1.6kgCOD/(m3·d)和8.0kgCOD/(m3·d)]和不同含盐量(2.5%和5%)条件下的颗粒化过程及除污效果。研究发现,较高的含盐量(5%)可以促使颗粒污泥在形态和孔隙率方面由发散的生长模式转变为密实的生长模式。试验进行了45d后丝状菌开始占据优势,R2[负荷为8.0kgCOD/(m3·d),含盐量为2.5%]对TOC和氨氮的去除率分别由95.6%、99.5%下降到95.3%、99.1%;R4[负荷为8.0kg-COD/(m3·d),含盐量为5%]对TOC和氨氮的去除率分别由97.2%、99.0%下降到94.5%、98.1%;高含盐量下的丝状菌颗粒去除污染物的效果优于低含盐量的。　　:　好氧颗粒污泥;　含盐量;　丝状菌:X703.1　　:A　　:1000-4602(2008)21-0009-04CharacteristicsofFilamentousAerobicGranularSludgeunderDifferentOrganicLoadingRatesandSalinitiesLIZhi-hua1,2,　ZHANGYong1,2,　WANGXiao-chang1,2(1.SchoolofEnvironmentalandMunicipalEngineering,Xi'anUniversityofArchitectureandTechnology,Xi'an710055,China;2.KeyLaboratoryofNorthwestWaterResources,EnvironmentandEcologyMinistryofEducation,Xi'anUniversityofArchitectureandTechnology,Xi'an710055,China)　　Abstract:　Thegranulationandpollutantsremovalefficiencyofaerobicgranularsludgeattheor-ganicloadingratesof1.6kgCOD/(m3·d)and8.0kgCOD/(m3·d)andatthesalinitiesof2.5%and5%wereinvestigatedinsequencingbatchreactors(SBRs).Itisfoundthatahighersalinitycanforcethegranulestogrowinacompactpatternratherthananemanativeoneintermsofmorphologyandporosi-ty.TheremovalratesofTOCandammoniadecreasefrom95.6%and99.5%to95.3%and99.1%inR2withtheloadingrateof8.0kgCOD/(m3·d)andthesalinityof2.5%,andfrom97.2%and99.0%to94.5%and98.1%inR4withtheloadingrateof8.0kgCOD/(m3·d)andthesalinityof5%re-spectivelywhenfilamentousbacteriapredominateaftertheexperimentof45days.However,thefilamen-tousgranulesaremoreefficientforremovalofpollutantsathighsalinitythanatlowone.　　Keywords:　aerobicgranularsludge;　salinity;　filamentousbacteria　　:(50708089);　(863)(2006AA06Z328)　　,。、·9·第24卷　第21期2008年11月　　　　　　　　　　　　中国给水排水CHINAWATERWASTEWATER　　　　　　　　　　　　　Vol.24No.21Nov.2008、[1、2],。,,[3]。[4～7],。,。1　试验材料与方法1.1　R1、R2、R3、R4,50mm,1000mm,(H/D)20,2L。,;,,、1L。、、、4,。(25±1)℃,3h,:。:15min5min,157min167min;:5min,167min,1。1　Tab.1　Operationconditionindifferentstagesmin　2157～16715～562167561.2　(A2/O),,3000～4000mg/L。1.3　,。,(10d)COD2000mg/L,:CH3COONa·3H2O1291.50mg/L,945.00mg/L,MgSO4·7H2O88.56mg/L,NH4Cl198.39mg/L,KH2PO428.56mg/L,K2HPO4·3H2O73.08mg/L。R1、R3COD400mg/L,:CH3COONa·3H2O258.30mg/L,189.00mg/L,MgSO4·7H2O88.56mg/L,NH4Cl198.39mg/L,KH2PO428.56mg/L,K2HPO4·3H2O73.08mg/L;R2、R4。1。1　Fig.1　Variationofsalinityindifferentreactors1.4　,。,:　v=4gd(1-ε)(ρp-ρw)3ΨCDρw(1)　ε———　Ψ———,1　CD———,[8]　ρp、ρw———　d———,、TOCSS;,R2、R4,,、TOC。。2　结果与讨论2.1　,25,R2、R4,R1、R3,R1、R3COD400mg/L,R2、R42000·10·第24卷　第21期　　　　　　　　　　　　　　中国给水排水　　　　　　　　　　　　。,[9],。,、、、、pH(4.5)、(10℃)[10、11],R2、R4COD2000mg/L,(8mg/L),C/N10,pH6.0～7.5,(25±1)℃,。、、,,。[12],,[3],。34,R2、R4,,R4R2,,。46(15d),,R2,,;R4“”,R2。,,R2,R4,“”,,。,,。,R2、R4TOC2。2,46d,R2、R4,,R2,R4,,R276%,R457%。,。2　R2、R4TOCFig.2　SludgeporosityandTOCremovalefficiencyinR2andR42.2　R2R4SS3。3　R2、R4SSFig.3　AmmoniaremovalefficiencyandeffluentSSinR2andR42、3,,、TOC,47,、TOC,SS,,,,、TOC。(4)。,。3,R2SS,R4,47,R4SSR2,R2SSR4。47,R2R4SS,R4R2。·11·李志华,等:不同有机负荷和含盐量下丝状菌颗粒污泥的特性第24卷　第21期,R4R2。47,R2SS,R4,R2“”,,;R4“”,。,,。4　R2、R4、TOCFig.4　TOCandammonianitrogenremovalefficienciesbyfilamentousbacteriainR2andR43　结论①　,、。②　、TOC,SS,。③　、、,。:[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.Theeffectofin-termittentfeedingonaerobicgranulestructure[J].Wa-terSciTechnol,2004,49(11-12):19-25.[5]　SchwarzenbeckN,BorgesJM,WildererPA.Treatmentofdairyeffluentsinanaerobicgranularsludgesequen-cingbatchreactor[J].ApplMicrobiolBiotechnol,2005,66(6):711-718.[6]　TayJH,LiuQS,LiuY.Microscopicobservationofaer-obicgranulationinsequentialaerobicsludgeblanketre-actor[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]　ZhengYu-Ming,YuHan-Qing,LiuShuang-Jiang.For-mationandinstabilityofaerobicgranulesunderhighor-ganicloadingconditions[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]:2008-07-25·12·第24卷　第21期　　　　　　　　　　　　　　中国给水排水