好氧处理工艺传质强化的机理与应用研究赫俊国

:0253-2468(2003)04-0432-04　　　:X703　　　:A赫俊国1,李　军2,张金松3,李建政1,杨海燕2　(1.,　150090;2.,　100022;3.(),　518031):.,,,(),,.48%,COD8.1—9.0kg(m3·d).,12∶1,4h,CODCr800—2200mgL,CODCr8—9kg(m3·d),CODCr95%,BOD597%,SS95%.:;;;;;;Mechanismandapplicationoftheenhancedmass-transferinaerobictreatmentprocessHEJunguo1,LIJun2,ZHANGJinsong3,LIJianzheng1,YANGHaiyan2　(1.SchoolofMunicipalandEnvironmentalEngineering,HarbinUniversityofTechnology,Harbin　150090;2.SchoolofCivilEngineeringandArchitecture,BeijingUniversityofTechnology,Beijing　100022;3.ShenzhenWaterResourcesBureau,Shenzhen　518031)Abstract:Thetechnologyofenhancedmass-transferprocessinatraditionalaerobicwastewatertreatmentanditsmechanismwereinvestigatedonthebasisofinertiaeffect.Improvingtraditionalprocessaeratingevennessandcontrollingthecentrifugalinertiaeffectoftinyvortexofmultiphasewouldcontributetothemasstransferandthealternativeofinterface,thentheefficiencyofbiochemicalreactionwasimprovedandtheprocesswasshortenedobservably.Theresearchshowedthatarateof48%ofoxygenutilizationwasachievedandaCODloadingof8.1—9.0kgCOD(m3·h)wasreceivedintheenhancedmass-transferprocess.Furthermore,afullscaleprocesswascarriedouttotreatslaughterhousewastewaterwiththevapor-liquidratioof12∶1,HRT4handCODloading8.0—9.0kg(m3·d)theresultshowedthattheremovalrateofCOD,BOD5andSSreachedto95%,97%and95%respectively.Keywords:aerobicwastewatertreatment;aeratingevenness;tinyvortex;multiphase;mass-transfer;inertiaeffect;slaughterhousewastewater:2002-12-30;:2003-03-29:(GB98L18-1):(1970—),,()　E-mail:[e-mail];[e-mail]、、.、,.,,,,,.,.1　1.1　,.5—10,23420037　　　　　ACTASCIENTIAECIRCUMSTANTIAEVol.23,No.4Jul.,2003DOI:10.13671/j.hjkxxb.2003.04.004.1.1　Table1　TherawmunicipalwastewaterqualityCOD,mgLBOD5,mgLNH+4-N,mgLTP,mgLSS,mgLpH103—75060—22610.8—44.32.4—15.865—3856.4—8.2　130—37070—13720.0—30.04.2—13.5110—3306.6—7.51　Fig.1　Schematicdiagramoftheenhancedmass-transferinwastewateraerobictreatmentprocess1.2　1.20m3,12m3/h,50%.,,,300mm,,,50mm.,.、2　BOD5CODFig.2　ComparativecurvesofBOD5andCODofinfluentandeffluent,.1.3　,COD100—700mgL,COD10—60mgL,COD85%—95%;BOD568—140mgL,BOD54—18mgL,BOD95%;SS120—330mgL,SS5—30mgL,SS90%;15—35mgL,3—8mgL,70%—85%.,1.0—1.2h,(2.5—3.0)∶1,COD9.0kg(m3·d),48%,.2.,8—10kg/m3,MLSS1.9—2.3kg/m3,SVI80—110,.2　,,,[1].、、4334:,.、.,,,.,,().,,.,、,.,,,.,,:　　λo=F(k)(ε3v)0.25;　aλ=ε23λ13λo:(),F(k)::aλ:;ε:;v:.,,,,λo,,,.,(Fr=u2g·L,u:,L:),[2,3].,,,,.,,.,,,、.,、.,,21—23℃、4m3/(m2·h),35mm,35%,50mm,31%,,,,,.,,,,(),、,.,;,,.,,,、,.3　3.1　,2.[4],434　　　　　　　　　　23　　2　Table2　CompositionoftheslaughterhousewastewaterCOD,mgLBOD5,mgLpHSS,mgL,mgL800—2200900—12507.0—7.8550—1200,mgL16008007.51000　-　　　3　Fig.3　Schematicdiagramoftheslaughterhousewastewatertreatmentprocess3.2000.480m3/d,2,5,100m3,5h,COD6.5kg(m3·d),15∶1,34%,50mm,.50%.4　COD、BOD5、SSFig.4　ComparativecurvesofCOD,BOD5andSSofinfluentandeffluentintheslaughterhousewastewatertreatmentprocess3.2　4、2,COD1600mgL,4h,COD50～80mgL;BOD5800mgL,BOD519—30mgL,MLSS8000—10000mgL,50%.,4.0h,12∶1,COD8.1kg(m3·d),38%,COD94%—96%,SS95%,BOD597%,GB13457-92.4　(1),,,.,,.(2),.(3),,COD8.1kg(m3·d),HRT4.0h、12∶1,38%,COD94%—96%,BOD597%,SS95%.:[1]　.[J].,2000,16(1):30—32[2]　.[D].().1997[3]　.[J].,1991,7(1):8—10[4]　,,,.[J].,2000,16(10):59—604354: