高温和中温ASBR处理热水解污泥的对比1

ASBR1,2,1,2,3,(1.,100084;2.,400016;3.,410083):(ASBR).HRT=10d,COD(TCOD)5142kg/(m3d),ASBRTCOD56120%61166%,COD(CH4)199219mL/g.ASBR(SRT),ASBRSRT3037d.ASBR,ASBR,ASBR.:;;;:X70311:A:025023301(2005)0220088205:2004204202;:2004207214:(863)(2002AA644010):(1973),,,,,.E2mail:[e-mail]chReactorfortheDigestionofThermo2HydrolyzedSludgeUnderThermophilicandMesophilicConditionsWANGZhi2jun1,2,WANGWei1,GaoDian2sen2;LIFen2fang3(1.DepartmentofEnvironmentalScienceandEngineering,TsinghuaUniversity,Beijing100084,China;2.SchoolofChemistryandChemicalEngineering,CentralSouthUniversity,Changsha410083,China)Abstract:Parallellaboratoryexperimentswereconductedtoinvestigatetheperformanceofthermophilicandmesophilicanaerobicse2quencingbatchreactor(ASBR)forthedigestionofthermo2hydrolyzedsewagesludge.TheaveragetotalCOD(TCOD)removalratesofthermophilic,mesophilicASBRat102dayHRTand5142kg/(m3d)TCODloadingratewere56120%and61166%,andthebiogasproductionratesofTCODinfeedingsludgewere199and219mL/g,respectively.ASBRhastheuniquecapabilityofmain2taininghigh2solidcontentandkeepingahighsolidretentiontime(SRT).TheaverageSRTofthermophilic,mesophilicASBRwere30and37d,respectively.ComparedtomesophilicASBR,thermophilicASBRshowconsiderablyfewermicrobialmorphologiesandlowermethane2production,whichmightresultinarelativelylowertreatmentefficiencyinthermophilicASBRthanthatinmesophilicASBR.Keywords:sewagesludge;ASBR;thermophilicdigestion;mesophilicdigestion(AnaerobicSequencingBatchReactor,ASBR)(SS)(1%5%),(HRT)(SRT)(MCRT).,ASBR[1].1978Haug[2],2[3][4][5][6].,(),20(CSTR).ASBRCSTR2ASBR,ASBR.11.11,2.2(III)15cm28cm,4L.3L,1L..2cm.,.26220053ENVIRONMENTALSCIENCEVol.26,No.2Mar.,2005©1995-2005TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.,551351.1Fig.1Schematicdiagramofanaerobicdigestionsystem1.2,3.6(312mm312mm),GSH210,17030min.(3).35.1.1()Table1Characteristicsoforiginalsludgeandthermo2hydrolyzedsludgepH6.620.156.070.10TS/gL-143.422.1140.421.78VS/gL-127.341.2324.200.88SS/gL-142.022.0034.361.60VSS/gL-123.251.1119.171.02TCOD/gL-156.413.4054.201.24SCOD/gL-11.820.1013.771.22/mgL-1780781580110TKN/mgL-115131201445130VFA/mgL-1376402581651.3.2,HRT=20d,HRT=10dTCOD5.42kg/(m3d),ASBR.ASBR(24h)(15min)(20h)(3.5h)(15min)4.3ASBR10min/h.1.4TSVSSSVSS:;COD:;pH:Orion868pH;:ZDJ24A;NH32N:;:SQ2206(FID);:SQ2206(TCD);:FEIQUANTA200(SEM).22.1ASBR22.pH,ASBRASBR.,.,,,ASBRASBR.ASBRCOD(SCOD)ASBR,(VFA)ASBR3.ASBRTCOD61166%,ASBR9172%,ASBRASBR9%15%.2ASBR()Table2PerformancesofASBRunderthermophilicandmesophilicconditionsASBRASBR/%pH7.880.047.740.11/mgL-133101203714100SCOD/mgL-1272868105540VFA/mgL-13174210116/mgL-114525497NH32N/mgL-16214565755VS50.471.6755.602.44TCOD56.203.1361.662.13SCOD80.180.5592.330.75/Ld-15.510.206.100.3/%591.4160.100.90TCOD(CH4)/mLg-11992121923,,.:,(FB),,[7];,,.982©1995-2005TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.UASBVFA,;UASB,COD11%[8].(AF),,[7].AF,,VFA[9].Pinnekamp,HRT20d,,HRT15d10d7.5d,[10].ASBR,Pinnekamp,.2.2SRTASBR,(SRT).,[11,12],,.23ASBR,.ASBR(TS)58.24g/L,ASBR70104g/L.SRT30d37d.2ASBRFig.2SolidsprofilesinthermophilicASBRSRTASBR,.,,,,SRT.()[13,14],ASBRSRT.2.3ASBRASBRASBR,,TCODSCOD.VFA,2ASBRVFA,ASBR[15,16].4h,ASBR,300mL/h360mL/h(4).,,3040mL/h.ASBRVFAASBR(56),.,ASBR.3ASBRFig.3SolidsprofilesinmesophilicASBR4ASBRFig.4CharacteriticsofgasproductionduringonecycleASBRVFASCOD(57).4h,SCODVFA(VFA),,12h,.,,,.,.0926©1995-2005TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.5ASBRVFAFig.5VFAprofilesinthermophilicASBR6ASBRVFAFig.6VFAprofilesinmesophilicASBR7ASBRSCODFig.7SCODprofilesinboththermophilicandmesophilicASBR2.4ASBRASBR,,,,(8).,.,;,,,,;(9).,,(),ASBR,ASBR,,.SEM,.ASBR,,,.ASBRASBR.8ASBRFig.8MicroscopepicturesofsludgeinthermophilicASBR9ASBRFig.9MicroscopepicturesofsludgeinmesophilicASBR3(1)HRT=10d,TCOD5142kg/(m3d),ASBRTCOD56120%61166%,TCOD199mL/g219mL/g.(2)ASBRSRT,HRT=10d,ASBRSRT3037d.,ASBRSRTASBR.(3)ASBR,ASBR,ASBR.192©1995-2005TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.(4)ASBR,,,ASBR.:[1],,,.(ASBR)[J].,2003,19(13):2832.[2]HaugRT,StuckyDC,GossettJM.Effectofthermalpre2treatmentondigestibilityanddewaterabilityoforganicsludges[J].J.WPCF,1978,50(1):7378.[3]ZhengJ,GraffRA,RinardI.Incorporationofrapidthermalconditioningintoawastewatertreatmentplant[J].FuelPro2ceedingTechnology,1998,56(3):183200.[4]LiYY,NoikealT.Upgradingofanaerobicdigestionofwasteactivatedsludgebythermalpretreatment[J].WaterScienceandTechnology,1992,26(324):857866.[5]ElbingG,DnnebeilA.ThermischerZellaufschlu(mitanschlie(enderFaulung2laboruntersuchnngen(Thermaldisintegrationwithsubsequentdigestionlab2scaleinvestigation)[J].Korre2spondenzAbwasser,1999,46(2):538547.[6]KeppU,MachenbachL,WeiszN.Enhancedstabilizationofsewagesludgethroughthermalhydrolysis2threeyearsofexperi2encewithfullscaleplant[J].WaterScienceandTechnology,2000,42(9):8996.[7]..:,1998.164165.[8]DinsaleRM,HawkesFR,HawkesDL.Comparisonofmesophilicandthermophilicupflowanaerobicsludgeblanketre2actorstreatinginstantcoffeeproductionwastewater[J].WaterResearch,1997,31(1):163169.[9]AhnJH,ForsterCF,Acomparisonofmesophl