Fenton氧化铁炭内电解预处理紫外线吸收剂生产废水

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Fenton-,,,(,266033)[]Fenton-,COD、、。,Fenton-。Fenton,COD43.2%48.6%;,0.022mol/L,m(H2O2)∶m(Fe2+)=5,25g/L,COD76.3%(COD3500mg/L),50,。[]Fenton;;[]X703.1[]A[]1005-829X(2011)12-0063-04PretreatmentofwastewaterfromultravioletabsorbentproductionbyFentonoxidation-iron&carboninternalelectrolysisLiJincheng,LiPeng,MengJing,YeXuesong(CollegeofEnvironment&CivilEngineering,QingdaoUniversityofScience&Technology,Qingdao266033,China)Abstract:ThecombinedprocessofFentonoxidation-iron&carboninternalelectrolysishasbeenusedforpretreat-ingthewastewaterfromultravioletabsorbentproduction.Theexperimentalresearchonthetreatmentofwastewaterfromultravioletabsorbentproduction,whichisofhigherCOD,highersalinityanddifficulttobebiodegrated,iscar-riedout.TheresultsshowthatthetreatmenteffectivenessofthecombinationprocessofFentonoxidationandinter-nalelectrolysisissuperiortoanyprocessbyusingeitherofthem.WhenFentonoxidationoriron&carboninternalelectrolysisisusedindividually,thehighestCODremovingrateis43.2%and48.6%,respectively.Whilethecom-binedprocessisused,theCODremovingrateis76.3%,whentheFeSO4·7H2Odosageis0.022mol/L,m(H2O2)∶m(Fe2+)=5,andthemassconcentrationofiron&carbondosagesis25g/L(thistime,theCODislessthan3500mg/L),andchromaticityreaches50times.Basisestablishedforfurthertreatmentofwastewaterfromultravio-letabsorbentproductionhasbeenoffered.Keywords:Fentonoxidation;iron-carboninternalelectrolysis;wastewaterfromultravioletabsorbentproduction,。,,、、,、、、、、、、,。、。,、、,、、,COD、、、、,、、,。3112201112IndustrialWaterTreatmentVol.31No.12Dec.,201163,Fenton,〔1-2〕;,,、,、〔3〕。Fenton、,COD、、,。11.1,,,60min,,80%,20%,1。11.2:、30%H2O2、,。,1~1.5mm,,,。,1~2mm。:JH-11COD,;SensION156,;85-1。1.3。Fenton:200mL500mL,NaOHpH3,,m(H2O2)∶m(Fe2+)H2O2,,120r/min,,,。:300mL,500mL,,,,NaOHpH=9.0,。1.4COD;;pH。22.1FentonFentonpH、Fe2+m(H2O2)∶m(Fe2+),pH3〔3-4〕。,,FentonpH,pH20%NaOH2~3,Fenton。2.1.1Fe2+,COD14800mg/L,NaOHpH2.5,200mL4500mL,FeSO4·7H2O,Fe2+0.011、0.022、0.048、0.066mol/L。H2O2,m(H2O2)∶m(Fe2+)=7,90min,,CODpH,1。1Fe2+COD1,Fe2+COD,Fenton,Fe2+0.022mol/L,COD,37.8%。Fe2+Fenton,FentonpHCOD/(mg·L-1)SS/(mg·L-1)/1168003502200132160080900≈11480060025002011-12,31(12)64H2O2Fe2+(·OH)〔5〕。Fe2+,H2O2·OH,Fe2+,·OH,COD,Fe2+,Fe2+Fe3+,·OH,。1,COD,pH2.01.2,Fenton。2.1.2m(H2O2)∶m(Fe2+),NaOHpH2.5,200mL5500mL,FeSO4·7H2O,Fe2+0.022mol/L。H2O2,m(H2O2)∶m(Fe2+)1、2、5、7、10,90min,,2。2m(H2O2)∶m(Fe2+)COD2,m(H2O2)∶m(Fe2+)=5,COD,43.2%。m(H2O2)∶m(Fe2+),H2O2,·OH,,m(H2O2)∶m(Fe2+)=2,COD27.9%。m(H2O2)∶m(Fe2+),H2O2Fe2+Fe3+,Fe3+·OH,·OH,H2O2,。m(H2O2)∶m(Fe2+),·OH〔6〕。,Fenton,,〔Fe2+〕,m(H2O2)∶m(Fe2+),H2O2,Fenton。2.2,〔7〕。,。300mLNaOHpH2~33,500mL,m()∶m()=1,5、15、25g/L,。60min,NaOHpH9,,pHCODpH,3。33,COD14800mg/L,pH=2.5,COD,NaOHpH,,COD,,25g/L,pH4.71,COD10800mg/L,COD,7600mg/L,48.6%。,,、、。2.3Fenton-,FentonCOD,,。Fenton2011-12,31(12),:Fenton-65,〔2,8〕。,Fenton,pHm(H2O2)∶m(Fe2+),,pHFenton,;Fe2+,m(H2O2)∶m(Fe2+),,Fenton。,FentonpH,,;Fentonm(H2O2)∶m(Fe2+),,。:300mL,500mL,NaOHpH2.5,m(H2O2)∶m(Fe2+)=5FeSO4·7H2OH2O2,60min,20min,200mL500mL,25g/L,60min,pH=9。,,5g/L,2。22Fenton、、pH,COD76.3%,,COD,,COD、〔9〕,。,50。。Fenton·OH〔H〕〔10〕,—NN—、—CC—、—CO—,。3(1),Fenton:pH=2.5,0.022mol/L,m(H2O2)∶m(Fe2+)=5,COD43.2%。,pH=2.5,25g/L,COD48.6%。(2)Fenton-,Fenton,,pH,m(H2O2)∶m(Fe2+),Fenton。(3)Fenton-,COD14800mg/L3500mg/L,76.3%,150050,,。[][1],,,.-Fenton[J].,2009,40(2):27-30.[2],,.Fenton[J].,2003,4(2):18-21.[3],,.-Fenton[J].,2002,35(2):57-60.[4]NeyensE,BaeyensJ.AreviewofclassicFenton’speroxidationasanadvancedoxidationtechnique[J].J.ofHazardousMaterials,2003,98(1/2/3):33-50.[5],,.Fenton[J].,2007,28(1):65-69.[6],,.Fenton[J].,2001,22(5):60-64.[7],,,.[J].,2001,21(12):36-37.[8],,.Fenton[J].,1997(2):18-21.[9]FranciscoJR,FernandoJB,JesusF.Oxidationofp-droxybenzoicacidbyFenton’sreagent[J].WaterRes.,2001,35(2):387-396.[10],.·OH[J].,2003,26(1):44-46.[](1969—),1994,,。、。:13708976778,E-mail:lijch-1@163.com。[]2011-10-07()COD/%pHFenton42.51.248.33.3pH=976.39.075.28.6===2011-12,31(12)66

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