高浓度难降解乳化废水湿式氧化影响因素研究

:2003-05-26:(20010247004):(1969-),,,,.1,2,3,3,2(11,200092;2.,200092;3.,200092):2L,CODCr,TOC:,220,CODCr48000mgPL2h,CODCrTOC8614%,7915%;,(1101125)p(O2)3;;pH:;;;;pH:X70311,X76:A:1001-6929(2004)02-0038-04StudyonInfluenceFactorsofWetAirOxidationofHighlyConcentratedEmulsificationWastewaterZENGXin2ping1,TANGWen2wei2,ZHAOJian2fu3,GUGuo2wei3,NIYa2ming2(1.SchoolofLifeScienceandTechnology,TongjiUniversity,Shanghai200092;2.DepartmentofChemistry,TongjiUniversity,Shanghai200092,China;3.StateKeyLaboratoryofPollutionControlandResourceReuse,TongjiUniversity,Shanghai200092,China)Abstract:Asystematicstudyonwetairoxidation(WAO)ofhighlyconcentratedemulsificationwastewaterwasperformedina2Lhigh2pressurebatchautoclave,withemphasisontheremovaleffectofCODCr,TOCandinfluencefactors.Theexperimentalresultsindicatedthatthetemperaturewasthekeyfactorandthebestfeasibletemperaturewas220,andthat8614%ofCODCrand7915%ofTOC(initialCODCr48000mgPL)inthewastewaterwereremovedin2h.Oxidationwasrestrictedwithoutenoughoxygen,itwasfittingwhenthesupplyofoxygenwas(1101125)p(O2)3.WAOhadagoodperformanceinthetreatmentofemulsifiedwastewaterinawiderrange.ThepHofinputwaterhadlittleinfluenceontheoxidatonef2ficiency.Keywords:emulsificationwastewater;wetairoxidation;temperature;supplyofoxygen;pH,,CODCr5000100000mgPL,,,,,(WetAirOxidation,WAO)(125350)(01520MPa),,[1],,2070,WAO,[2-5],,11111FYX-2a(2L),,(2)112172ResearchofEnvironmentalSciencesVol.17,No.2,2004,400mL,,,,1;2;3;4;5;6;7;8;9;10;11;12;131Fig.1ExperimentalEquipmentofWAO113CODCr;TOCTOC;pH114,1,,(CODCr5310%),(2512%),(1117%)(1011%)1Table1QualityoftheemulsifiedwastewaterpH(CODCr)P(mgL-1)(BOD5)P(mgL-1)(TOC)P(mgL-1)(BOD5)P(CODCr)9.099.8853570741105340664015620208400.0720.1242211,(CODCr51120mgPL,TOC14280mgPL,pH=9108)(220,p(O2)=112p(O2)3(p(O2)3,))24:,,,500rPminCODCrTOC911%716%,250rPmin500rPmin,500rPmin;,pH,,P(rmin-1):10;2250;35002CODCrFig.2TheinfluenceofblendtoCODCrremovalrate:1,2,323TOCFig.3TheinfluenceofblendtoTOCremovalrate:1,2,324pHFig.4TheinfluenceofblendtopHofoutputwater212,Arrhenius,,,,,,,(CODCr48000mgPL,TOC14220mgPL,pH=9102)(500rPmin,p(O2)=1125p(O2)3)56:CODCrTOC,180220,2208614%932:P:1160;2180;3200;4220;52405CODCrFig.5TheinfluenceoftemperaturetoCODCrremovalrate:1,2,3,4,556TOCFig.6TheinfluenceoftemperaturetoTOCremovalrate7915%,240,,220;,;WAO,10.5p(O2)3;20.75p(O2)3;31.0p(O2)3;41.25p(O2)3;51.5p(O2)37CODCrFig.7TheinfluenceofinitialpartialsupplyofoxygentoCODCrremovalrate213(CODCr51120mgPL,TOC14280mgPL,pH=9105)(220)79:,015p(O2)3,0175p(O2)3,110p(O2)3:1,2,3,4,578TOCg.8TheinfluenceofinitialpartialsupplyofoxygentoTOCremovalrate:1,2,3,4,579pHFig.9TheinfluenceofinitialpartialsupplyofoxygentopHofoutputwater1125p(O2)33%,,1h,(1101125)p(O2)3pH:,,pH,,,pH,214(CODCr)P(mgL-1):18948;218060;337060;451120;57411010CODCrFig.10TheinfluenceofinitialCODCrmassconcentrationtoCODCrremovalrate(CODCr894874110mgPL)(220,p(O2)=112MPa(25))1012:CODCr894874110mgPL,2h,CODCr8118%8913%,,,0417:1,2,3,4,51011TOCFig.11TheinfluenceofinitialCODCrmassconcentrationtoTOCremovalrate:1,2,3,4,51012pHFig.12TheinfluenceofinitialmassconcentrationCODCrtopHofoutputwater,,,;(CODCr18060mgPL)pH,(CODCr37060mgPL)pH,pH,(12)pH:15.07;26.88;39.3113pHCODCrFig.13TheinfluenceofpHofinflowwatertoCODCrremovalrate215pHpH(CODCr46550mgPL,TOC13040mgPL)(220,p(O2)=112MPa(25))1315:pH:1,2,31314pHTOCFig.14TheinfluenceofpHofinflowwatertoTOCremovalrate1,2,31315pHpHFig.15TheinfluenceofpHofinflowwatertopHofoutputwater,pH,pH,pH3a1,220,CODCr48000mgPL2h,CODCrTOC8614%,7915%b.,(1101125)p(O2)3c.,d.pH:[1]MishaVS,MahajaniVV,JoshiJB.Wetairoxidation[J].IndEngChemRes,1995,34(1):2-48.[2]DietrichMJ,RandallTL,CanneyPJ.Wetairoxidationofhazardousor2ganicsinwastewater[J].EnvironProg,1985,4(3):171-177.[3]EftaxiasA,FontJ,FortunyA,etal.Kineticmodellingofcatalyticwetairoxidationofphenolbysimulatedannealing[J].ApplCatalB:Environ,2001,33(2):175-190.[4]KacarY,AlpayE,CeylanVK.Pretreatmentofafyonalcaloidefactoryswastewaterbywetairoxidation(WAO)[J].WaterRes,2003,37(5):1170-1176.142: