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31,13,1,2(11,100084;21,100083):3().2500mgL-1,24h,3R0113mg(mgd)-1,0109mg(mgd)-10103mg(mgd)-1,315mg(Ld)-1,263mg(Ld)-165mg(Ld)-1.,.2500mgL-1,12h36h,2d30%,0125mg(mgd)-1.4240mgL-1,24h.:;;;:X703:A:025023301(2006)1122339205:2006203201;:2006205207:(20020003041):(1976),,,,E2mail:liangpeng@mail.tsinghua.edu.cn3,E2mail:xhuang@tsinghua.edu.cnComparisonofThreeBio2methodsforSludgeReductionandTheirOptimizationLIANGPeng1,HUANGXia1,QIANYi1,YANGNai2peng2(1.StateKeyLaboratoryofEnvironmentSimulationandPollutionControl,DepartmentofEnvironmentalScienceandEngineering,TsinghuaUniversity,Beijing100084,China;2.InstituteofChemistryandEnvironmentalEngineering,ChinaUniversityofMiningandTechnology,Beijing100083,China)Abstract:Threebio2methodsforsludgereductionincludingaerobicdigestion,anaerobicdigestionandpredationbyT.tubifexwereinvestigated.Thesludgereductionratesin24hbypredationofT.tubifex,anaerobicdigestionandaerobicdigestionwere0113mg(mgd)-1,0109mg(mgd)-1and0103mg(mgd)-1respectively,whensludgeconcentrationwas2500mgL-1.T.tubifexcoulddestroythecellmembraneofthebacteriainashorttime,whichcouldincreasethesludgereductionratewhenanaerobicdigestionwasadoptedafterthepredationofT.tubifex.UsingtheT.tubifextoreducesludgefor12hcombinedwithanaerobicdigestionfor36hcouldreducesludgeby30%,andthesludgereductionratewas0125mg(mgd)-1.Iftheinitialsludgeconcentrationincreased,thetimeofpredationbyT.tubifexshouldbeextended.Keywords:sludgereduction;predationbyT.tubifex;anaerobicdigestion;aerobicdigestion,,,[1,2]..,,.,,,[36].(/):3.3.11113,500mL.500mL,;500mL,3min,4h;500mL,(2mgL-1),2711200611ENVIRONMENTALSCIENCEVol.27,No.11Nov.,2006转载[3].25.,(014%NaCl)(010001%NaClO)3cm,.112TSSVSS2:(BAClight),1.20mL.1Table1AnalysisitemsandmethodsTSS105[7]DHG29140AVSS550[7]TM20912S[8,9]SHIMADZUUV1200V[1012]F225001133:R=(Si-Si+1)/(tSi),Si(mgL-1),Si+1t(d).R(),:mg(mgd)-1;E=(Si-Si+1)/(tV),SiSi+1t,V(L).E(),:mg(Ld)-1;Rr=(Si-Si+1)/Si,Rr,%.3,,3.221132500mgL-1,324h,1.R0113mg(mgd)-1,0109mg(mgd)-10103mg(mgd)-1;E315mg(Ld)-1,263mg(Ld)-165mg(Ld)-1;24h216%815%1216%.,2.,,.13Fig.1Sludgeconcentrationchangesinthreebio2methodsforsludgereduction23Table2Comparisonofthreebio2methodsforsludgereductionR/mg(mgd)-1E/mg(Ld)-1Si/mgL-101054258500,[5]0109263250001037525000103974161065330,12d,[13]010339013000,[14]010484198704,[15]0100927116()125()13454/,[16]215(),[17]602113454,[18]116313896,[19]01411302500,[3]01133152500043227中国科技论文在线(mgd)-1,,;24h.212312h,(MolecularProbesLIVE/DEADRBaclightTM);,2.(cd)(dehydrogenaseactivity,DHA)(nmolh-1),2.,,.Pavlostathis,,.,[20].23Fig.2DHAandBACmeasurementresultsofsludgeinthreebio2methodsforsludgereduction12hVSSTSS3,3,TSSVSS/TSS,,,.33Fig.3Organiccontentsinthreebio2methodsforsludgereduction213+424h,,.,0112mg(mgd)-1,,.4+Fig.4Sludgereductionbythecombinedprocess4,2,.5,..143211中国科技论文在线(mgd)-1.12h36h,30%.,11d,4d,1152d,.214+2500mgL-14240mgL-1,,6.16h24h32h24h,16h8h(40h),40h0117mg(mgd)-10122mg(mgd)-10120mg(mgd)-1.24h.2500mgL-112h,,,.3(1)3,,,.(2),.(3),2d30%,0125mg(mgd)-1.(4),+.:[1],,,.[J].,2003,4(1):4452.[2]WeiYS,VanHoutenRT,BorgerAR,etal.Comparisonperformancesofmembranebioreactor(MBR)andconventionalactivatedsludge(CAS)processesonsludgereductioninducedbyOligochaete[J].Environ.Sci.Technol.,2003,37(14):31713180.[3]LiangP,HuangX,QianY,etal.Comparisonofsludgereductionratescausedbythefourmicro2faunaspredation[J].BioresourceTechnology,2006,97(6):854861.[4]LiangP,HuangX,QianY.ExcesssludgereductioninactivatedsludgeprocessthroughpredationofA.hemprichi[J].BiochemicalEngineeringJournal.BioresourceTechnology,2006,28(2):117122.[5]ChenGH,Kyoung2JinA,SwvastienS,etal.Possiblecauseofexcesssludgereductioninanoxic2settling2anaerobicactivatedsludgeprocess(OSAprocess)[J].WaterResearch,2003,37:38553866.[6]WeiYS,LiuJX.ThedischargedexcesssludgetreatedbyOligochaeta[J].WaterScienceandTechnology,2005,52(10211):265272.243227中国科技论文在线[7].[M].().:,1989.107108.[8],,,.[J].,1996,9(3):186188.[9],.TTC2[J].,1996,16(4):400406.[10]HaglundAL,PeterL,ErikT,etal.Depthdistributionofactivebacteriaandbacterialactivityinlakesediment[J].FEMSMicrobiologyEcology,2003,46:3138.[11]RenyeJA,PiggotJP,Daneo2MooreL,etal.PersistenceofStreptococcusmutansinstationary2phasebatchculturesandbiofilms[J].AppliedandEnvironmentalMicrobiology,2004,70(10):61816187.[12]LawrenceJR,ChenierMR,RoyR,etal.Microscaleandmolecularassessmentofimpactsofnickel,nutrients,andoxygenlevelonstructureandfunctionofriverbiofilmcommunities[J].AppliedandEnvironmentalMicrobiology,2004,70(7):43264339.[13].[J].,1994,7(1):5564.[14],,.[J].,1995,17(1):2730.[15],.[J].,1997,16(10):2931.[16],.[J].,2003,16(4):5153.[17],,.[J].,2005,19(1):2831.[18].[J].,2002,18(12):5455.[19],,.[J].,2001,17(8):2325.[20]PavlostathisSG,GossettJM.Akineticmodelforanaerobicdigestionofbiologicalsludge[J].BiotechnologyandBioengineering,1