催化湿式氧化法对模拟印染废水的色度去除张永利

:2008-09-02:2008;(2008S20);(1053095-4-05)·:(1973-),,,,;(1958-),,,,·第30卷第6期2009年6月东北大学学报(自然科学版)JournalofNortheasternUniversity(NaturalScience)Vol.30,No.6Jun.2009张永利,李　亮,胡筱敏(,　110004)　　　:(CWAO),300000,m(Cu2+)/m(Fe2+)1∶1Cu1Fe1,、、、pH·:、、;pH,pH,pH;,60min99.99%·　　:;;;;:X703.1　　　:A　　　:1005-3026(2009)06-0881-04DecolorizationofSimulatedPrintingandDyeingEffluentswithCWAOTechnologyZHANGYong-li,LILiang,HUXiao-min(SchoolofResources&CivilEngineering,NortheasternUniversity,Shenyang110004,China.Correspondent:HUXiao-min,professor,E-mail:[e-mail])Abstract:Inordertostudyontheeffectofsimulatedprintinganddyeingeffluentsdecolorizationwithcatalyticwetairoxidation(CWAO)technology,methyleneblueaqueoussolutionwithchromaof300000waschosenassimulatedprintinganddyeingeffluents,andCu1Fe1withm(Cu2+)∶m(Fe2+)=1∶1wasusedashomogeneouscatalyst,thentheeffectofsampledecolorizationwasinvestigatedoncatalystdosage,oxygenpartialpressure,reactiontemperature,pHofinfluentandthereactiontime.Theresultsshowthatthedecolorizationratesofsampleincreaseswiththeincreaseindosageofcatalyst,oxygenpartialpressure,reactiontemperatureandprolongedreactiontime.However,thereisanextremepointofpHvalueofinfluent,andthedecolorizationratesincreaseswiththedecreaseinthepHvalueunderacidicconditions,andwiththeincreaseinthepHvalueunderalkalineconditions.Attheoptimizedtechnicsconditions,thedecolorizationrateofsampleisupto99.99%aftersuchareactionfor60min.Keywords:catalyst;wetoxidation;printinganddyeingeffluent;methyleneblue;decolorization、、、,·(、、、)、(、、),,[1-2],·(catalyticwetairoxidation,CWAO),(125～320℃)(0.5～20MPa),,[3]·CWAO,[4-7]·CWAO,19:、[8],m(Cu2+)/m(Fe2+)1∶1Cu1Fe1·,,·1　　　1.1　:、CuSO4、FeSO4,·:1080mg·L-1,300000·,,,,·1·1　Fig.1　Structureofmethyleneblue1.2　CWAO0.5LGS(316L,Cr18Ni12Mo2-3),2·,250mL300000Cu1Fe1,,,·,·,2　Fig.2　SchematicofexperimentalsetupforCWAO1—;2—;3—;4—;5—;6—;7—;8—;9—;10—;11—··1.3　752,660nm·0.2～0.7A·A0=465,:η=A0-nAA0×100%·(1):A0;A;n·2　2.1　、·:120℃,1.0MPa,pH5.25,25,50,150250mg·L-1·1·1　-Table1　Decolorizationratesvs.timewithdifferentdosesofcatalyst　mg·L-1/%10min30min60min90min120min2542.6470.5584.7498.1498.245052.4596.0798.5598.7598.9315067.4598.5598.9299.3499.9225068.0498.6598.9599.9599.931-:Cu1Fe1,,·Cu1Fe1150mg·L-1,30min,98.5%,,99.9%·Cu1Fe1,Cu1Fe1150mg·L-1·2.2　,·,,,,·,·882东北大学学报(自然科学版)　　　　　　　　　　　第30卷:120℃,pH5.25,150mg·L-1,0.3,1.02.0MPa·2·2　-Table2　Decolorizationratesvs.timeunderdifferentoxygenpartialpressuresMPa/%10min30min60min90min120min0.361.5594.0498.6598.7498.911.067.4198.5198.9699.2599.322.068.9398.7299.0299.7299.92,O2※O·+O·,O·+H2O※HO·+HO·,O·,HO·,H,CO2H2O·,,·2,,,·,,,,·,1.0MPa·2.3　,·100℃,,,,,·,,·:1.0MPa,pH5.25,150mg·L-1,120,150,180200℃·3··10min,120℃67.46%200℃98.63%,31.17%·,·120min99.9%～100%,·,,,,,,,·,180℃·3　-Table3　Decolorizationratesvs.timeatdifferentreactiontemperaturest℃/%10min30min60min90min120min12067.4698.5098.9599.3799.9415098.0798.7499.7899.9999.9918098.4398.9999.9999.9999.9920098.6399.9999.9999.9999.992.4　pHpH·pH,,pH·pH:pH,;pH;pH,·:180℃,1.0MPa,150mg·L-1,HNO3NaOHpH3.82,5.25,7.259.47·4·4　pH-Table4　Decolorizationratesvs.timeatdifferentpHvaluesofinfluentwaterpH/%10min30min60min90min120min3.8298.7799.9599.9999.991005.2598.4398.9299.9999.9999.999.4798.1298.8199.9499.9999.997.2587.5198.5999.5299.9999.994:pH,pH·:,O2OO·,H+HOO·,pH,HOO·,,,;,,Fe(Ⅲ),,,,Fe(Ⅲ),·4,10min87%,,30min883第6期　　　　　张永利等:催化湿式氧化法对模拟印染废水的色度去除99%,pH·,pH、,pH5.25·2.5　,CWAO·CWAO,·、、pH,:150mg·L-1,1.0MPa,180℃pH5.25,,5·5　Table5　Effluentofdifferenttimeinthebesttechnicsconditions/min103060901201504710324030303030%98.4398.9299.9999.9999.9999.995,10min,CWAO,10min98.43%;10～90min,60min99.99%,60minCWAO,·,,,·,,Cu1Fe160min·3　CWAO,:Zimpro[9],1996200160,50,20,·[10]CWAO,:,3595,CWAO2095·Cu1Fe1,,,·4　　　、、·pH,pH·CWAO:150mg·L-1,1.0MPa,180℃pH5.25·,60min,30000030,99.99%·:[1]SnellFD.Treatmentofwastefromdyeingandprinting[J].IndEngChem,1994,26(5):580-581.[2]CiardelliG,RanieriN.Thetreatmentandreuseofwastewaterinthetextileindustrybymeansofozonationandelectroflocculation[J].WatRes,2001,35(2):567-572.[3]MishraVS,MahajaniVV,JoshiJB.Wetairoxidation[J].IndEngChemRes,1995,34(1):2-48.[4]SalesFG,MaranhaoLC.Kineticevaluationandmodelingoflignincatalyticwetoxidationtoselectiveproductionofaromaticaldehydes[J].IndEngChemRes,2006,45(20):6627-6631.[5]EyerS,BhargavaS,TardioJ,etal.Selectiveorganicremovalfromthealuminaindustrialliquor:wetoxidationandcatalyticwetoxidationofdisodiummalonate[J].IndEngChemRes,2002,41(5):1166-1170.[6]SantosA,YustosP,DurbanB,etal.Catalyticwetoxidationofphenol:kineticsofphenoluptake[J].EnvironSciTechnol,2001,35(13):2828-2835.[7]ZhangYL,HuXM,XingC,etal.InfluenceofoperationalfactorsofWAOtechnologyondegradationofmethylthioninechloridewaterysolution[J].JournalofEcotechnologyResearch,2006,12(1/2):46-48.[8]ZhangYL,HuXM.Researchonnon-homogeneousphaseCWAOtechnologytodecomposemethylthioninechloride[J].JournalofEcotechnologyResearch,2006,12(1/2):49-52.[9]KolaczkowskiST,PlucinskiLG,BeltranFJ,etal.Wetairoxidation:ariverofprocesstechnologiesandaspectsinreactordesign[J].ChemEng,1999,73(1):143-146.[10]·———[J]·,·,1990,2(1):46-52·(Ha