UASB反应器的二次启动及高温冲击试验刘川

UASB、HRT、、[1-6]。2080UASB。[7-10]。UASBTSSVSSCODCODfCODfUASBUASB,。11.11UASB10cm32cm5L90cm7cm9.6L130cm15L3。。1.243UASB1～2mmUASB。SVI=20mL·g-11～2mmTSS41.4g·L-1VSS5.6g·L-1。1.3mg·L-11000K2HPO420NH4Cl100CaCl2·2H2O50MgCl2·6H2O330CoCl2·6H2OUASB411105UASBUASB。UASB333dCODCODf75%。UASB70±1℃、2h35℃COD5%35℃150hCOD80%0.24L·d-1。UASBX703.1A1000-3770(2011)[e-mail]1UASBFig.1SchematicoftheUASBreactor37920119TECHNOLOGYOFWATERTREATMENTVol.37No.9Sep.,2011116DOI:10.16796/j.cnki.1000-3770.2011.09.03210ZnCl250CuCl2·2H2O35MgCl2·6H2O330NaH-CO3500。1.4pHThermoOrion4-StarpHCODTSSVSSVFAVFA[11]。1.530h0.5L·h-135±1℃pH7.0±0.111d。51121。30h24h2133。70±1℃2h35℃3444。22.1UASB2.1.1CODCODCODfCODCODf2。CODCODf65%CODf55%、45%。5。8dCODCODf80%CODfCODf。CODCODfCODf1/2。CODf。CODf50%。24h。CODfCOD17%3%CODCODCODCODfCODf。12CODf80%。2.1.2TSS、VSS、VFA35d0.2L·d-110.2L·d-10.21L·d-1。。TSSVSS。3TSS300mg·L-111200mg·L-12CODFig.2ChangeofCODremovalrateduringthesecondarystar-upoftheUASBreactor05101520253035020406080100
/%/d3TSS、VSS、Fig.3ChangeofTSS,VSSandgasproduction05101520253035050100150200250300350
/Ld/d
/mgL0.000.050.100.150.200.25UASB117TSS230mg·L-120170mg·L-1TSS200mg·L-1TSS300mg·L-1130mg·L-1VSS100mg·L-170mg·L-1。VFA450mg·L-1620mg·L-1[12]VFA。2.2UASB2.2.1COD、VFA、pHUASB。30h70±1℃2h35℃CODfpHVSSTSSVFA。COD4。2h70℃COD80%5%。COD10～15min6hCOD[13-14]。COD30h21%78h60%150h80%80%～90%。COD[15-16]COD。78h78h。72hVFAVFA530、592、613mg·L-1200mg·L-12000mg·L-1[12]VFA。pH6～7.5pH[12]。2.2.2TSS、VSSUASBTSS、VSS5。572h0.24L·d-1。TSS、VSS25、15mg·L-1TSSVSS216h120mg·L-150mg·L-1。3UASB3、。COD、TSS。COD。CODCODf75%COD60%COD40%～55%。CODCOD。UASB70℃5TSS、VSS、Fig.5ChangeofTSS,VSSandgasproduction020406080100120140160180200220020406080100120140160
/Ld/h
/mgL0.000.050.100.150.200.250.304CODFig.4ChangeofCODremovalrateafterthermalshockofUASBreactor050100150200250020406080100
/%/h379118115COMPARISIONONTHEOPERATIONCHARACTERISTICSOFPDMBRANDSFDMBRONWASTEWATERTREATMENTHeYang,YinJuan,HongJunming(CollegeofChemicalEngineering,HuaqiaoUniversity,Xiamen361021,China)Abstract:Polyesterfilterclothesof37μmwereutilizedastheseparationmediumtodevelopaself-formingdynamicmembranebioreactor(SFDMBR)andaprecoateddynamicmembranebioreactor(PDMBR)withkaolin.Theywereusedtotreatsyntheticwastewater.TheresultsshowedtheabilityofantipollutioninthePDMBRwasbetterthantheSFDMBRandtheoperationperiodsofSFDMBRandPDMBRwere13dand11d,respectively.ThefluxesofdynamicmembraneofPDMBRandSFDMBRcouldbe28L·m-2·h-1.WhentheconcentrationofDOwasmorethan0.5mg·L-1,theconcentrationsofeffluentCODwerethesame,theremovalefficienciesofCODwereover85%.TheconcentrationsofEPSofSFDMBRandPDMBRwere75mg·L-1and70mg·L-1,respectively.Keywords:PDMBR;SFDMBR;wastewatertreatment;operationcharacteristicsSECONDARYSTART-UPOFUASBREACTORANDEFFECTOFTHERMALSHOCKONACTIVITYOFANAEROBICSLUDGELiuChuan,DaiYouzhi,WangHaiYang,JiaMingchang,WangHui（CollegeofEnvironmentEngineering，XiangtanUniversity，Xiangtan411105，China）Abstract:Thestart-upofUASBreactorinoculatedgranularsludgetreatingsimulatedwastewaterwasstudied,andtheUASBreactorwhichhavebeensecondstartedsuccessfullywereconductedthermalshockexperiments.Thestart-upexperencedthreestages，circumfluencewasaddedandhydraulicretentiontimewasreducedprogressively.Itlast33daysbeforeitcompletedthesecondarystart-up，CODremovalrateandCODfremovalrateoftheUASBreactorcouldreach75%.Basedonsuccessfulstart-upoftheUASBreactor,theUASBreactorwascarriedthermalshockof(70±1)℃for2h，followingcontinuousoperationat35℃.TheCODremovalrateandgasproductionreducedto5%and0afterthermalshock,andrecoveredtoaround80%andabout0.24L·d-1respectivelyafter150h'scontinuousoperation.Keywords：UASBReactor;secondarystart-up;anaerobicsludge2hpH、TSS、VSSCOD5%150hCOD80%0.24L·d-1。[1]NidalMahmoud.HighstrengthsewagetreatmentinaUASBreactorandanintegratedUASB-digestersystem[J].BioresourceTechnology,2008,99(16):7531-7538.[2]NidalMahmoud,GrietjeZeeman,HuubGijzen,etal.Anaerobicsewagetreatmentinaone-stageUASBreactorandacombinedUASB-Digestersystem[J].WaterResearch,2004,38(9):2348-2358.[3]MHalalsheh,ZSawajneh,MZu'bi.Reatmentofstrongdomesticsewageina96m3UASBreactoroperatedatambienttemperatures:two-stageversussingle-stagereactor[J].BioresourceTechnology,2005,96(5):577-585.[4]SeghezzoL,ZeelnanG,vanLierJB.Areview:theanaerobictreatmentofsewageinUASBandEGSBreactors[J].BioresourceTechnology,1998:175-190.[5]BehiingE,DiazA,ColinaG.DomesticwastewatertreatmentusingaUASBreactor[J].BioresourceTechnology,1997,61(3):239-245.[6]UemuraS,HaradaH.TreatmentofsewagebyaUASBreactorundermoderatetolowtemperatureconditions[J].BioresourceTechnology,2000,72:275-282.[7],,,.[J].,1997,13(3):65-67.[8],.[J].,2009,39(7):66-70.[9]YairAchituv,PeterACook.TheinfluenceoftemperaturevariationsandthermalpollutiononvariousaspectsofthebiologyoftheprawnPalaemonpacificus(Stimpson)[J].JournalofExperimentalMarineBiologyandEcology,1984,74(3):291-302.[10]CLARDICCI,FROSSI,FMALTAGLIATI.Detectionofthermalpolluti