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70℃///BAC1,2,1,1,1(1., 130026;2., 130012):70℃、、、(BAC),,COD、VFA、,、.:COD99.62%,VFA100%,COD50mg/L,COD,COD49.7%,33.7%,14.5%,BAC1.1%;VFA56%,21.2%,BAC21.8%;34.8%,62%,BAC3%.36.2kg/(m3·d).BACCOD3500mg/L,COD95.8%.,,pH6.6～7.5.:(70℃);;;BAC:X703.1;X792 :A :0250-3301(2005)06-0110-05:2004-11-24;:2005-01-13:(2003BA614A-10-01):(1958～),,,.ExtremeThermophilic(70℃),CombiningTwo-PhaseAnaerobic/ActivatedSludge/Bio-ActivatedCharcoalforTreatingFoodWastewaterYUHong-bing1,2,HUANGTao1,LINXue-yu1,WURui1(1.InstituteofWaterResourcesandEnvironment,JilinUniversity,Changchun 130026,China;2.JilinAcademyofEnvironmentScience,Changchun130012,China)Abstract:Thisstudywasconductedtoinvestigatetheperformanceofcombiningtwo-phaseanaerobic(TPA)/activatedsludge(AS)/bio-activatedcharcoal(BAC),seededwithmesophilicsludge,fortreatingfoodwastewateratextremetemperature(70℃)toallowtreatedwatertobereusedforclosedheatwatercircuits.Thesystemhadatotalhydraulicretentiontimeof42h.ReactorperformancewascharacterizedbyCOD,VFA,pH,amino-acid.AnoverallCODtreatmentefficiencyof99.62%,VFAandamino-acideof100%andpHbetween6.6～7.5wereobservedforthesystem.CODremovalofacidificationphase,methanephase,activatedsludgeandBACwas49.7%,33.7%,14.5%,and1.1%,respectively.VFAremovalofmethanephase,activatedsludgeandBACwas56%,21.2%and21.8%,respectively.Amino-acidremovalofmethanephase,activatedsludgeandBACwas34.8%,62%and3%,respectively.CODconcentrationofeffluentinthesystemwaslowerthan50mg/L.Anadditionalexperimentsshowthatactivatedsludgeandbio-activatedcharcoalat70℃mayallowCODconcentrationofinfluentupto3500mg/LandCODremovalwasupto95.8%athighorganicloading4.5kg/(m3·d)withaerobiccondition.Keywords:extremethermophilic(70℃);two-phaseanaerobic;activatedsludge;bio-activatedcharcoal 70℃[1].35℃,.25℃,35℃55℃[2].UASB[3]70℃.UASB,VFA66%～75%[4].[5,6],[7].COD35℃,55℃,70℃COD35℃55℃.70℃COD90%32.5%[8],266200511 ENVIRONMENTALSCIENCEVol.26,No.6Nov.,2005DOI:10.13227/j.hjkx.2005.06.023COD1000mg/L.,,,70℃,.1 1.1 :,1.1 Table1 WastewaterqualityCOD/mg·L-1TN/mg·L-1/mg·L-1pHCOD/TN1000073017666.5～7.015∶11.2 1,,0.3L,70℃,HRT=3h;UASB,2.5L,70℃,HRT=24h;,2.0L,65℃;,VSS=2g/L,VSS/SS=0.58,HRT=18h;BAC0.3L,,HRT=3h,,,,,,BAC,65℃.1 Fig.1 Schematicdiagramofthetwo-stageUASBprocessforfoodwastes1.3 COD:;VFA:;:;pHpH2-25BC.2 2.1 COD70℃100,BAC.2.COD(10000±400)mg/L,20,COD2、3.,COD47.2%,2049.7%,COD,36.2kg/(m3·d).COD5100～5800mg/L,.COD1656mg/L,COD.COD68.5%,84%.,,COD217mg/L,87.9%,3.0h,45.2mg/L,COD75.7%.,COD99.0%,99.62%.,,COD49.7%,33.7%,14.5%,BAC1.1%,COD50mg/L,COD.2 CODFig.2 ChangeofCODofinfluentandeffluentineachprocesswithtime2.2 VFA1116 4、5,70℃,,VFA2940mg/L,(VFA/COD)28.5%.,VFA,VFA52.6%,VFA1237mg/L,,VFA82.6%,VFA212.7mg/L.BAC,VFA24.8mg/L,BAC20dVFA0,.VFA56%,21.2%,BAC21.8%.VFA,BACVFA,,VFA.3 CODFig.3 ChangeofCODineachprocesswithtime4 VFAFig.4 ChangeofVFAineachprocesswithtime2.3 ,,,CODpH.6,400mg/L,3～4.40%,220mg/L.,92.0%,15.1mg/L.,,,BAC,5d6.3mg/L,,.,,,.pH.,34.8%,62.0%,BAC3%,BAC,,BAC.,BAC.5 VFAVFA/CODFig.5 ChangeofVFAandVFA/CODinacidficationprocesswithtime2.4 pH,pH.pH6.0[9,10].7,pH6.9～7.0,,112 266 Fig.6 Changeofamoniaineachprocesswithtime5d6.88,、VFAVFA/COD,pH,20d,pH6.67,(VFA/COD)28.5%.pHVFA/COD.,N,,VFA,,,2,pH,.,VFA,56.9%,CH4CO2.34.8%,,,,pH.,,,CO2,NO2,,pH7.1～7.32.4BAC,,pH,7,pH7.1pH.2.5 70℃BACBAC,BAC,COD,.20d,COD1147mg/L3583mg/L,12h,BAC4h.8,COD 7 pHFig.7 ChangeofpHineachprocesswithtime1147～1700mg/L,COD200～280mg/L,BACCOD46～79.9mg/L,COD87%81.8%,97.7%.11d2010mg/L,COD318.7mg/L,BACCOD71.3mg/L.COD83.8%79%.96.4%.COD3056mg/L3583mg/L,COD78.3%80.4%,BAC77.2%81%,94.7%95.8%.,BACCOD2000mg/LCOD,,COD1,COD50mg/L,97%,COD.3000～3500mg/L,COD95%,COD150mg/L.COD4.08kg/(m3·d)..8 BACCODFig.8 ChangeofCODinaerobicandBACprocesswithtime1136 3 (1)28%,COD49.7%,COD,COD36.2kg/(m3·d).(2)70℃70℃/BAC,,COD99%,COD50mg/L.,;BAC,.(3)、BACVFA,VFA52.6%,82.6%,BAC100%.,VFA56%,21.2%,BAC21.8%.,.(4),34.8%,62.0%,BAC3.0%,,.(5),pH,pH,7.0,.(6)70℃BAC,COD1000～2000mg/L,COD97.7%,COD3000mg/L,95.5%.COD4.00kg/(m3·d),COD.:[1] RintalaJ,lepistoS.Pilot-scalestudyonthermophilicanaerobictreatmentofwastewaterfromseasonalvegetableprocessingindustry[A].In:2ndSpecializedConferenceonPretreatmentofIndustrialWastewater[C].Greece:athens,1996.538～545.[2] RaghidaLepisto,JukkaRintala.Extremethermophilic(70℃),VFA-FEDUASBreactor:performance,temperatureresponse,loadpotentialandcomparisonwith35and55℃UASBreactor[J]Wat.Res.,1999,33(14):3162～3170.[3] LaraJB,RamanDR.SequentialTwo-stageAnaerobicTreatmentofConfectioneryWastewater[J].J.Agric.Engng.Res.,2000,76:211～217.[4] vanLierJB,LettingaG,ConwaydeMacario,etal.Permanentincreaseoftheprocesstemperatureofmesophilicupflowanaerobicsludgebed(UASB)reactorto46,55,75℃[A].In:47thIndustrialWasteConference[C].USA:Indiana,1992.446～459.[5] MizunoO,LiYY,NoikeT.Thebehaviorofsulfate-reduceingbacteriainacidogenicphaseofanaerobicdigestion[J].Wat.Res.,1998,32(5):1626～1634.[6] VisserA,GaoR,LettingaG.EffectofpHonmethanogenesisandsulphatereductioninthermophilic(55℃)UASBreactors[J].BioresourceTechnology,1993,44:113～121.[7] ,,.[J].,1997,18(6):42～44.[8] ,,.[J].,2005,25(1):16～21.[9] ,,,.[J].,20