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2005,25(1)75~79ChinaEnvironmentalScience,,,(,130026),35,55,70.3VFACODSSpH.,(70)COD;,28.5%,0.142h1,COD24%,SS86%,SO4232.5%,89.4%.36.2kgCOD/(m3⋅d)..X703A10006923(2005)01007505Studiesonthecharacterandeffectofhydrolysis-acidificationunderextremetemperature.YUHong-bing,LINXue-yu,YANGXue-mei,ZHANGLan-ying(CollegeofEnvironmentandResource,JilinUniversity,Changchun130026,China).ChinaEnvironmentalScience,2005,25(1)75~79AbstractThehydrolysis-acidificationdynamicandstaticexperimentswerecarriedoutforhightemperatureanaerobicsludgeinstarchproducinghightemperaturetechnologicalwastewaterat70,thesludgehadbeeninoculatedandtamedforalongtimeinanupflowhydrolysisreactor.Meanwhile,experimentsofmediumandhightemperatures(35and55)werecarriedoutundersameconditiontocompare,studyandevaluatetheeffectofhydrolysis-acidificationofdifferenttemperatureandretentionperiod,andthechangecharacteranditsmechanismofVFA,COD,SS,pH,sulfate,sulfide,basically,protein,etcinhydrolysis-acidificationprocessatthethreekindsoftemperature.Superhightemperature(70)acidificationrateandspeed,alsoremovalrateofCODandsulfatewereallhigherthantheeffectofmediumandhightemperatureobviously.Dynamicexperimentshowedthatinittherateofacidificationwas28.5%andspeedwas0.142h1,removalrateofCODwas24%,ofSSreached86%,ofSO42was32.5%,hydrolysisofproteinwas89.4%,volumeloadingofhydrolysisreactorreached36.2kgCOD/(m3⋅d).Itsuggestedthatrateandspeedofacidificationwasusedasthecomplexsolutionindex.Keywordssuperhightemperaturehydrolysis-acidificationeffectevaluation,.,[1].(30~35)(50~55),(70)[2].,pH,,.,.,,,.11.13,130mm,210mm,2500mL,20040603863(BA614A-10-01)hl196210280@mail.jl.cn7625,35,55,70.7055,35.10g/L,VSS/SS0.52±0.02.(70~75).1.2COD:;SS:;VFA:;:;:;:;SO42:EDTA;NH4N:;pHpH2-25BC.1.3,pHVFA(VLR)CODpHSS.35,55,70.1.0,2.0,2.5,3.0h.pHVFASO42S2.2,6,8,10,12h.3~4d.COD2082mg/L,SS492mg/L,SO422918mg/L,TN309mg/L,COD:N6.7:1,pH4.5;COD:N15:1,COD6282mg/L,TN420mg/L,266.5mg/L,pH4.7.22.1VFA.13VFA.,70VFA,5535,,.5535.,(1,1).,,,,2~3[3].,,,,.70.1VFAFig.1ChangesofVFAindifferenttemperaturewithtime1Table1Comparisionofeachparameterindifferenttemperature()VFAmax/VFA0VFAmax/COD(%)COD(%)VLR*Kh(h1)352.6115.813.220.20.063552.1915.018.728.20.150705.1928.524.036.20.143:*kgCOD/(m3⋅d)2.2COD2,,3COD;CODVLR,70COD.COD(C/N).COD[4].COD,COD.050010001500200001234HRT(h)VFA(mg/L)3555701772CODFig.2ChangesofCODremovalindifferenttemperaturewithtime2.3COD/TN6.7,COD/N7.82,,,VFAH2CO2NH4+N,CO2pH,VFA[5]..,2h,3.81.7%,86.8%,89.4%.,.2.4SS,SS.3h,,SS,3530.3%,5551.4%,7086%.70.2.5pHpH,3.5~10,5.5~6.5[5].()VFApH,,pH;SO42CO2pH.13,3pHVFA,70VFA,pH,5.31,3555.3555pH4.354.28.,70SO42pH.3pHFig.3CharactericticsofpHchangesinacidicationprocess4pHFig.4CharacteristicsofpHchangesinacidicationprocess,.,pH,CaO+Na2CO3pH7.39,.,VFA,12h,3525.8%,5525.9%,7028.6%,pH6.65,6.92,6.86.3pH,CaO+Na2CO3pH05101520251.01.52.02.53.0HRT(h)COD(%)3555706.36.56.76.97.17.37.5024681012HRT(h)pH3555704.04.55.05.56.06.57.00.01.02.03.0HRT(h)pH3555707825,pH(4,5).5VFAFig.5ChangesofVFAindifferenttemperaturewithtime2.6,.,,.(H2S,HS,S2)()[6],,.2000~4000mg/L,,2000mg/L,[7].SO422918mg/L,,COD/SO420.71,COD,SO42,.6,HRT,SO42,7032.5%,,70SO42.SO42+H2S+CO2+H2+VFA(1)(1),SO42,S2,353.25,552.0,701.74(7).,(SRB),,H2S,.,70,SO42.6SO42Fig.6CharactericticsofSO42changesinacidicationprocess7S2Fig.7CharacteristicsofS2changesinacidificationprocess2.7,,CODVFApH,,COD.,.,,,COD,0100200300400500600700051015HRT(h)VFA(mg/L)355570200022002400260028003000051015HRT(h)355570SO42(mg/L)0510152025051015HRT(h)355570S2(mg/L)179COD.COD.VFA,COD.,CODVFA(VFA/COD)[8],.,,,,,,Kh(h1).,SS.SSVFA/CODKh(h1),pH,.,,.,0.42[7],0.20~0.30,,[8],VFACOD20%~30%,[7].VFA,,.33.170CODSS,70,,.3.270,,,SO4232.5%,.3.3CaO+Na2CO3VFApH,pH6.5.3.4SSVFA/COD,,,.[1]StegemaMHL,PeijnenburgWJM,VerboomH.Aquantitativestructure-activity.Relationshipforthedirectphotohydrolysisofmeta-subtitutedhalobenzenederivativesinwater[J]Chemosphere,1993,26(5):837849.[2]RaghidaLepistÖ,JukkaRintala.Extremethermophilic(70),VFA-FEDUASBreactor:performance,temperatureresponse,loadpotentialandcomparisionwith35and55UASBreactor[J].Wat.Res.,1999,33(14):31623170.[3].[M].:,1996.[4],,.[M].:,2002.406430.[5].ABR[J].,2004,24(1):2026.[6],,.[J].,2000,26(12):1215.[7]YoungHo-Ahn,KyungSok-Min,RichardESpeece.Pre-acidificationinanaerobicsludgebedprocesstreatingbrewerywastewater[J].Wat.Res.,2001,35(18):42674276.[8].[M].:,2001.(1958),,,,.10.