超声辐照活性污泥联合处理焦化废水宁平

-,,,,,(,　650093,[e-mail]):,-.,、CODCr.807mg/L,,,CODCr4.5%;119.4kW/m2,65%;-CODCr,,CODCr45%81%;,,,.:;;;:X784　:A　:0250-3301(2003)03-05-0065:(2000E0061):(1958～),,,,,.:2002-05-31;:2002-07-12TreatmentofCarbonizationEffluentbytheUltrasonicRadiationandAc-tivatedSludgeProcessNingPing,XuJinqiu,HuangDongbin,MaXiaoli,XuXiaojun,LiZiyan(TheSchoolofEnvironmentalScienceandEngineering,KunmingUniversityofScienceandTechnology,Kunmimg650093,China)Abstract:Thepaperdealswiththedegradationoforganicpollutantsbytheultrasonicirradiation-activatedsludgepro-cess.ThetreatmentoftherealcokingwastewaterofKunmingcokemaking-gasplantwasstudiedwiththewaterqualitymodel.Usingtheultrasonicirradiation-activatedsludgeprocesstheorganicpollutantsintherealcokingwastewatercanbedegradedeffectively.Theinfluencefactorsoftheultrasonicdegradationeffectsuchasinitialconcentration,aeratedgasandultrasonicdensitywereinvestigatedandmechanismwasexplored.Theresultshowsthattheultrasonicdegrada-tioneffectwashighwiththedecreaseofinitialconcentrationoftheCODCr,thepresenceofaeratedgasandtheincreaseofultrasonicdensity.AttheinitialCODCrconcentrationof807mg/L,whenairactedasaeratedgasandonlyairitself(noultrasound)wasexertedonthewastewater,thedegradationrateoftheCODCrwillbe4.5%.However,whentheultrasoundoftheintensityof119.4kW/m2wasexertedonthewastewater,thedegradationrateoftheCODCrwillbe65%.Comparedwiththeactivatedsludgeprocessalone,thecombinationoftheultrasonicirradiationandactivatedsludgeprocesscanincreasethedegradationrateoftheCODCrfrom45%to81%.Theoxygenconsumptionrateofthecarbonizationeffluentobviouslydecreasedinthepresenceoftheactivatedsludge.Thisshowsthecarbonizationeffluentisnotbiotoxicbehindtheultrasonicirradiation.Keywords:carbonizationeffluent;ultrasonicradiation;waterqualitymodel;activatedsludgeprocess　　2090,,[1～10].,,,1900～5200K5.065×107Pa,109K/s[11],400km/h,·O、·OH、·O2H[12],“”.1　24320035　　　　　　ENVIRONMENTALSCIENCEVol.24,No.3May,2003DOI:10.13227/j.hjkx.2003.03.013CODCr,-,CODCr,.CODCr1.1　CODCrFig.1　EquilibriumoftheCODCrintherefractoryorganicindustrialwastewaterofhighconcentration　　1,SS,O:(mg/L);XS,O:(mg/L);SI,O:(mg/L);SI,e:(mg/L).　　CODCrCODCr3,CODCr、CODCr(2CODCr)CODCr(CODCr).CODCr,CODCrCODCr.2　2.　　.500mL,,.,(24h).18kHz,=119.4kW/m2(135W,P=0.4×135W=54W).pH,;25℃±2℃;,.1.2.3.4.5.2　Fig.2　Schematicdiagramoftheexperimentequipmentofultrasonicirradiation500mL,.60min(,10mL),100mL,.CODCr,DOWTW(MultiLineP4).3　3.1　(1)　CODCr807mg/L,500mL,pH8.17,100mL30min,24h,CODCr443.85mg/L,443.85mg/L,CODCr45%.(2)　CODCr807mg/L,500mL,pH8.17,100mL30min,,,3.　　3,,0,,0.66　　　　　　243　Fig.3　Relationshipsbetweentheoxygenconsumptionspeedoftheactivated-sludgeintheinitialcokingwastewaterandtime(3)　2,807mg/L,0,363.15mg/L,443.85mg/L.CODCr45%,4.4　CODCrFig.4　SchematicdiagramoftheequilibriumoftheCODCrinthecokingwastewaterdegradedbyactivated-sludge3.2　-(1)CODCr　CODCr807mg/L,pH8.17,119.4kW/m2,,,CODCr.5.　　5,.240min,CODCr27.5%;CODCr65%;CODCr4.5%.·OHH2O2,.(2)CODCr　CODCr807、19032980mg/L,3pH8.17,.119.4kW/m2240min,CODCr6.5　CODCrFig.5　EffectofsaturatedgasonthedegradationrateoftheCODCrinthecokingwastwater6　CODCrFig.6　EffectofinitialsoluteconcentrationonthedegradationrateoftheCODCrinthecokingwastewater　　6,CODCr,.119.4kW/m2240min,807、1902980mg/L65%、42%28%.,,.240min,807、1903673　　　　　　2980mg/LCODCr262.28mg、399.63mg417.2mg.OH.、.(3)CODCr　CODCr807mg/L,,180kW/m3、90kW/m354kW/m3.pH8.17,.54W240min,CODCr7.7　CODCrFig.7　EffectoftheultrasonicdensityonthedegradationrateoftheCODCrinthecokingwastewater　　7:CODCr,CODCr.180kW/m3、90kW/m354kW/m3,CODCr77%、65%52%.,,CODCr.3.3　-(1)　CODCr807mg/L,500mL,pH8.17,119.4kW/m2240min,100mL30min,24h,CODCr156.86mg/L,156.86mg/L,CODCr81%.(2)　119.4kW/m2240min500mL,100mL30min,,,8.8　Fig.8　Relationshipsbetweentheoxygenconsumptionpeedofactivated-degradedbyultrasonicirradiationandtime　　8,,,.S22.55mg/L,CODCr:CODCr=S1-YH,YH,,YH=0.625,:CODCr=S1-0.625=22.551-0.625=60.13mg/L　　(3)-　2,,CODCr807mg/L,,CODCr334.67mg/L,CODCr58.54%.,30min100mL,24h,60.13mg/L,156.86mg/L,117.68mg/L,CODCr81%.9.4,-68　　　　　　24,CODCr,,CO2,,060.13mg/L,,443.85mg/L156.86mg/L,CODCr45%81%.,,,,,,,.9　-CODCrFig.9　SchematicdiagramoftheequilibriumoftheCODCrinthecokingwastewaterdegradedbyactivated-sludgeafterbeingdegradedbyultrasonicirradiation　　,,(),,,,,,,..4　(1),CODCr..,,4.54%;CODCr,,,,CODCr;CODCr,,CODCr,.(2),,,CO2H2O,,,.(3),(),,,,.(4)-CODCr(807mg/L),CODCr45%81%,.:1　SuslickKS.Thechemicaleffectofultrasound.Science,1990,247:1439.2　HuaIetal.Sonolytichydrolysisofp-nitrophenylacetate:theroleofsupercriticalwater.J.Phys.Chem.,1995,99:2335.3　..,2000,4(2):114～119.4　..,2000,26(5):19～21.5　..,2000,20(12):8～10.6　.-.,1996,16(6):332.7　.-.,2000,89(2):42～45.8　,,..,1996,16(5):61～63.9　BhatnagarAetal.SonochemicaldestructionofchlorinatedC1andC2volatileorganiccompoundsindiluteaqueoussolution.Environ.Sci.Technol.,1994,28(8):1481～1486.10　VisscherADetal.Kineticmodelforthesonochemicaldegradationofmonocyclicaromaticcompoundsinaqueousso-lution.J.Phys.Chem.,1996,100(28):11636～11642.11　SerponeNetal.Ultrasonicinduceddahalogenationandoxi-dationof2,3,4-chlorophenolinair-equilibrate