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374200512()J1XianUniv.ofArch.&Tech.(NaturalScienceEdition)Vol.37No.4Dec.2005,(,710055):.,2.13%,33,HRT3d,pH5.56.5,13.6%,VFA0.102mgVFA(COD)ömgCOD;,2.20%,33,pH,HRT2d,20.59%,VFA0.152mgVFA(COD)ömgCOD..:;;;:X703.1:A:100627930(2005)0420501204XStudyonprimarysludgehydrolysisasbiologicalnitrogenandphosphorousremovalWUYi2ping,WANGXu2dong(SchoolofEnvir.&Muni.Eng.,Xi’anUniv.ofArch.&Tech.,Xi’an710055,China)Abstract:AsavaluablecarbonsourceforsubsequentN2Premovalprimarysludgehydrolysiscanprovidethesolubleorganics.Bychangingthesolidsconcentrationofprimarysludge,temperatureandhydraulicretentiontimetodiscusstheoptimisticcondition,underwhichthehighestVFAyieldcanbeachieved.Theexperimentalresultsshowedthata1316%ofnetSCODproductionintermsofinitialsludgeTCODcanbeobtainedinasemi2continuousandcompletelymixedfermentoroperatingwith2.13%ofsolidconcentration,3dofHRT,5.56.5ofpHat33.Underthiscondition,netVFAyieldis0.102mgVFAasCODömginitialsludgeTCOD;b)Afterthepre2treatment2disintegrationofprimarysludge,20.59%ofnetSCODproductionintermsofinitialsludgeTCODcanbegainedinthesamefermentoroperatingwith2.20%ofsolidconcentration,2dofHRT,5.56.5ofpHat33.Meanwhile,netVFAyieldisasmuchas01152mgVFAasCODömginitialsludgeTCOD.Keywords:primarysludge;hydrolysis;organiccarbon;nitrogenandphosphorusremoval,UCTMLEBardenphoSBR.,CöN,.(),,COD.,X:2004207201:(00JK249):(19792),,,,.中国城镇水网[1,2](),,.,,.1ö3;,1ö5,.().11.14.0L,..,G.GCOD(CODS)COD(CODT),G=CODSöCODT.1.2CODCr:;VFA:;MLSSMLVSS:;:.22.11HRTFig.1EffectoftemperatureonSCODproductionunderdifferentHRT,,,.,,,,.,9400mgMLVSSöL,(1d2d3d),(172533)1.,3d,,(),172533,8.39%9.73%12.15%.17252533,35.2.2(HRT)HRT.,,.1,17,HRT1d,3.5%;HRT3d,9.73%,2.33,HRT1d,8.39%;HRT3d,12.15%,50%.,,HRT.,HRT,,.,3d.2.3,.2333d,.,,,2.13%,(13.6%),VFA01102mgVFA(COD)ömgCOD.,,,,,;,HRT,,.205()37中国城镇水网[3],.,,,.Chyi[4],.,0.02mm0.05mm1.52.0.,.,,.2.4.13Fig.3Particlesizedistributionofprimaryslugefollowthesrush(COD)3.,0.0650.3mm51.29%;0.0385mm25.78%.,,0.0385mm64.04%,.2.4.2,2.20%,33,4.HRT3d,13.6%;,,HRT1d,15.7%,,HRT3d2.1%,HRT2d,20.59%,,HRT3d1.51,VFA0.152mgVFA(COD)ömgCOD.4Fig.4EffectofparticlesizedistributiononSCOD,,1ö3.3:,,,COD.,.,:2.13%,33,3d,pH5.56.5.,13.6%,VFA0.102mgVFA(COD)ömgCOD.(508)3054:中国城镇水网(2),4#(d=4mm,s1=40mm,s2=7.5mm),Nu159%,2.(3),.:[1].[M].:,1985.[2].[M].:,1995.[3].[M].:,1990.[4]PatankarSV,LiuCH,SparrowEM.Fully2developedFlowandHeatTransferinDuctsHavingStreamwise2PeriodicVariationsofCross2SectionalArea1[J].TransactionsofASMEJournalofHEATTransfer.1997,99(5):1802187.[5]JunFuKai,OsamuMiyatake.Laminer2flowHeatTransferwithinParallel2PlateChannelwithStaggeredBaffles[J].HeatTransfer2JapaneseResearch,1993,22(2):1712183.[6]HabibMA.ExperimentInvestigationofHeatTransferandFlowOverBafflesofDifferentHeights[J].TransactionsofASMEJournalofHEATTransfer,1998,99(5):2502258.[7]LopezJR,AnandNK,FletcherLS.HeatTranferinathree2dimensionalchannelwithbafflesNumerical[J].HeatTransferPartA,1996,30(2):1892205.[8]WebbBW,RamadhyaniS.ConjugateHeatTransferinChannelWithStaggeredRibs[J].InternationalJournalofHeatandMassTransfer,1985,28(9):167921687.[9]BISWASG,TonK,FUJND.Numericalandexperimentaldeterminationofflwstructureandheattransfereffectsoflongitudinalvorticesinachannelflow[J].INT.J.Heatmasstransfer,1996,39(16):344123451.[10][]BA.,.[M].:,1982.[11].[D].:,2004.[12].[M].:,2002.[13].[M].:,2001.[14].[M].:,2000.()(503),,.:2.20%,33,2d,pH5.56.5.,20.59%,VFA0.152mgVFA(COD)ömgCOD.:[1],,.[J].,2002,():2832286.[2],,.ö[J].(),2004,36(4):4212423.[3]BanisterSS,PretoriusWA.Optimisationofsludgeacidogenicfermentationforbiologicalnutrientremoval[J].WaterSA,1998,24(1):35242.[4]ChyiYT,DagueRR.Effectsofparticulatesizeinanaerobicacidogenesisusingcelluloseasasolecarbonsource[J].WaterEnvir.Res,1994,66:6702678.()805()37中国城镇水网