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:025322468(2003)0420432204:X703:A1,2,3,1,2(1.,150090;2.,100022;3.(),518031):.,,,(),,.48%,COD811910kgP(m3d).,121,4h,CODCr8002200mgPL,CODCr89kgP(m3d),CODCr95%,BOD597%,SS95%.:;;;;;;Mechanismandapplicationoftheenhancedmass2transferinaerobictreatmentprocessHEJunguo1,LIJun2,ZHANGJinsong3,LIJianzheng1,YANGHaiyan2(1.SchoolofMunicipalandEnvironmentalEngineering,HarbinUniversityofTechnology,Harbin150090;2.SchoolofCivilEngineeringandArchitecture,BeijingUniversityofTechnology,Beijing100022;3.ShenzhenWaterResourcesBureau,Shenzhen518031)Abstract:Thetechnologyofenhancedmass2transferprocessinatraditionalaerobicwastewatertreatmentanditsmechanismwereinvestigatedonthebasisofinertiaeffect.Improvingtraditionalprocessaeratingevennessandcontrollingthecentrifugalinertiaeffectoftinyvortexofmultiphasewouldcontributetothemasstransferandthealternativeofinterface,thentheefficiencyofbiochemicalreactionwasimprovedandtheprocesswasshortenedobservably.Theresearchshowedthatarateof48%ofoxygenutilizationwasachievedandaCODloadingof811910kgCODP(m3h)wasreceivedintheenhancedmass2transferprocess.Furthermore,afullscaleprocesswascarriedouttotreatslaughterhousewastewaterwiththevapor2liquidratioof121,HRT4handCODloading810910kgP(m3d)theresultshowedthattheremovalrateofCOD,BOD5andSSreachedto95%,97%and95%respectively.Keywords:aerobicwastewatertreatment;aeratingevenness;tinyvortex;multiphase;mass2transfer;inertiaeffect;slaughterhousewastewater:2002212230;:2003203229:(GB98L1821):(1970),,()E2mail:junguohe@263.net;lj21c@263.net.,.,,,,,.,.11.1,.510,23420037ACTASCIENTIAECIRCUMSTANTIAEVol.23,No.4Jul.,2003.1.1Table1TherawmunicipalwastewaterqualityCOD,mgPLBOD5,mgPLNH+42N,mgPLTP,mgPLSS,mgPLpH1037506022610.844.32.415.8653856.48.21303707013720.030.04.213.51103306.67.51Fig.1Schematicdiagramoftheenhancedmass2transferinwastewateraerobictreatmentprocess1.21.20m3,12m3/h,50%.,,,300mm,,,50mm.,.2BOD5CODFig.2ComparativecurvesofBOD5andCODofinfluentandeffluent,.1.3,COD100700mgPL,COD1060mgPL,COD85%95%;BOD568140mgPL,BOD5418mgPL,BOD95%;SS120330mgPL,SS530mgPL,SS90%;1535mgPL,38mgPL,70%85%.,110112h,(215310)1,COD910kgP(m3d),48%,.2.,810kg/m3,MLSS1.9213kg/m3,SVI80110,.2,,,[1].3344:,..,,,.,,().,,.,,.,,,.,,:o=F(k)(3Pv)0.25;a=2P3P1P3o:(),F(k)::a:;:;v:.,,,,o,,,.,(Fr=u2PgL,u:,L:),[2,3].,,,,.,,.,,,.,.,,21234m3/(m2h),35mm,35%,50mm,31%,,,,,.,,,,(),,.,;,,.,,,,.33.1,2.[4],434232Table2CompositionoftheslaughterhousewastewaterCOD,mgPLBOD5,mgPLpHSS,mgPL,mgPL800220090012507.07.85501200,mgPL16008007.5100023Fig.3Schematicdiagramoftheslaughterhousewastewatertreatmentprocess3.2000.480m3/d,2,5,100m3,5h,COD6.5kgP(m3d),151,34%,50mm,.50%.4CODBOD5SSFig.4ComparativecurvesofCOD,BOD5andSSofinfluentandeffluentintheslaughterhousewastewatertreatmentprocess31242,COD1600mgPL,4h,COD5080mgPL;BOD5800mgPL,BOD51930mgPL,MLSS800010000mgPL,50%.,410h,121,COD811kgP(m3d),38%,COD94%96%,SS95%,BOD597%,GB13457292.4(1),,,.,,.(2),.(3),,COD811kgP(m3d),HRT410h121,38%,COD94%96%,BOD597%,SS95%.:[1].[J].,2000,16(1):3032[2].[D].().1997[3].[J].,1991,7(1):810[4],,,.[J].,2000,16(10):59605344: