采用FentonUV处理金属切削液废水的试验研究

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0,、,、,,、,,[1]。、、,。,,[2],。Fenton,UV2。Fenton/UV,:KANG[3]Fenton/UV;[4]Fenton/UV;KIM[5]Fenton/UV;[6]Fenton/UV;[7]Fenton/UV。,Fenton/UV,。1。,ρ(CODCr)2000mg/L,。1。Fenton/UV,*,(,621010):Fenton/UV,:pH=2.5,ρ(Fe2+)=400mg/L,H2O2[V(H2O2)=30%]24mL/L,V(H2O2)4mL/L,45min,6,UV=5h,5L。:,ρ(CODCr)2100mg/L110mg/L,CODCr95%,GB8978—1996《》。。:;Fenton/UV;;:X7:A:1674-4829(2009)06-0006-04:2009-07-28:(:NO.3);.:(1985-),,,,,.*:.StudyonTreatmentofMetalWorkingFluidsWastewaterbyFenton/UVZHOUNai-lei,WANGZhong-qi,XUXu-dongAbstract:ThemetalworkingfluidswastewaterthatproducedinthemetalmanufactureindustrywastreatedbytheadvancedoxidationtechnologyofFenton/UV.Throughtheorthogonalexperiment,theoptimalconditionfortheexperimentwasacquired,thatwas:initialpH=2.5,ρ(Fe2+)=400mg/L,afteruniformmixingaddingH2O2(30%)24mL/Linall,eachtimeaddingH2O24mL/L,theintervalofeachtimebeing45minutes,andadding6times.ThetotaltimeofUVeffectwasabout5hours.Meanwhile,accordingtotheoptimalconditiontheenlargingexperimentof5Lwasmade.BoththelittleexperimentandenlargingexperimentshowthatattheoptimalconditiontheCODcrconcentrationofeffluenceisreducedtoabout110mg/Lfrom2100mg/L,andeachindexofthetotaleffluencereachesthesecondlevelof“IntegratedWastewaterDischargeStandard”(GB8978-1996).Theoptimalconditiondatahasthereferencevalueinprojects.Keywords:Metalworkingfluids;Fenton/UV;Advancedoxidationtechnology;Orthogonalexperiment226200912EnvironmentalScienceandTechnologyVol.22No.6Dec.20092262:FeSO4·7H2O(AR),H2O2(30%)(AR),K2Cr2O7(AR),H2SO4(AR),NaOH(AR),Ag2SO4(AR),(NH4)2Fe(SO4)2·6H2O(AR),PAM(AR),。:SGY-,;PH211,;DD60-2F,。:CODCr;pHPH211。3Fenton/UVFenton/UVFenton。Fenton,,,H2O2,,[8-10]:(1)H2O2,·OH∶H2O2+hν→2·OH(2)Fe2+,Fe3+,Fe3+Fe(OH)2+,Fe(OH)2+Fe2+,·OH:Fe(OH)2++hν→·OH+Fe2+H2O2,Fenton:Fe2++H2O2→Fe3++OHˉ+·OHFe3++H2O2→Fe2++HO2+H+,,Fe(C2O4)+,Fe(C2O4)ˉ,Fe(C2O4)33-,,,:2[Fe(C2O4)n]3-2n+hν→2Fe2++(2n-1)C2O42-+CO2Fe2+H2O2Fenton。Fenton/UV,。4FentonUV/H2O2,CODCr。Fenton[11],:ρ(Fe2+)=500mg/L,30%H2O215mL/L,ρ(CODCr)=2000mg/L,ρ(CODCr)=1130mg/L,43.5%,。UV/H2O2UV500W,H2O220g/L,4h,ρ(CODCr)=2000mg/L,ρ(CODCr)=1550mg/L,22.5%,。2Fenton/UV。5,pH,ρ(Fe2+),H2O2UV43[13-14],2。,300W,500mL,ρ(CODCr)2000mg/L3。,R1R3R2R4,,Fenton/UV:pHH2O2ρ(Fe2+)UV。A1C3B2D1。pH=2.5,H2O220mL/L,ρ(Fe2+)=400mg/L,UV3h。ρ(CODCr)2000120ρ(BOD)34030ρ()3025ρ()0.61.0/1000801mg·L-1(B)ρ(Fe2+)/(mg·L-1)300400500(C)v(H2O2)/(mL·L-1)121620(D)UV/h3452.53.54.5(A)pH2123456789K1K2K3k1k2k3R111222333157430194344524.71006.31448.0R1=4344123123123298028703087993.3956.71029.0R2=30871232313123502312723081167.31042.3769.3R3=3502123312231286430163057954.71005.31019.0R4=3057ρ(CODCr)/(mg.L-1)66155036310827081229123716121495ACBDA1C3B2D1DCBA3L9(34)Fenton/UV7200912CODCr:pH7,Fe3+,Fe2+,PAM,1.5mg/L,,CODCr。CODCr,pHFenton/UV,pH2.5CODCrpH4.5。CODCr,Fenton,H2O2,H2O2。,。H2O2,,43,4,,300W,500mL,ρ(CODCr)2000mg/L,1pH=2.5,ρ(Fe2+)=400mg/L,H2O220mL/L,3h,H2O2,5。2,R1R3R4R2,,Fenton/UV:H2O2。A2B2C3。H2O24mL/L,45min,6。645min,4.5h13h,,H2O2,45min。2:Fenton/UV100。H2O2()Fenton./UVCODCr,1CODCr81.9%294.8%。Fenton,H2O2:H2O2+H2O2→2H2O+O2,H2O2,。61、2,pH=2.5,ρ(Fe2+)=400mg/L,H2O224mL/L,H2O24mL,45min,6,UV5h,500mL,CODCr2000mL/L,2,110mg/L101mg/L。。1、2,,H2O2Fenton,45minH2O2Fenton,H2O2。,Fenton,。Fenton/UV。7,CODCr。1,,ρ(CODCr)=2117mg/L,5L3,2。。1Fenton/UV123456789K1K2K3k1k2k3MAXRa111222333729.2420.9433.3243.1140.3144.4R1=729.2123123123550.0545.9487.5183.3182.0162.5R2=550b123231312645.9466.7470.8215.3155.6156.9R3=645.9c123312231595.8529.2458.4198.6176.4152.8R4=595.8ρ(CODCr)/(mg.L-1)312.5229.2187.5104.2150.0166.7133.3166.7133.3abca2b2c25L9(34)(a)H2O2/mL345(b)/min304560(c)/45648226100806040200COD/%1Fenton2UV/H2O23Fenton/UV(1)4Fenton/UV(2)5Fenton/UV()22:3,。。,H2O2180minCODCr,,225min,ρ(H2O2)24mg/LCODCr,,[14]。8FentonUV/H2O2,Fenton/UV,CODCr。3CODCr,CODCr95%,Fenton/UV,。3CODCr(CODCr)/100mg/L,:,;,1m360;,,;,2~5m3,。,。[][1],,,.[J].,2005(10):132-133.[2].[J].2006(6):28-30.[3]KANGSF,WANGTH.Decolorizationanddegradationof2,4-dinitrophenolbyFentonreagent[J].EnvironSciHealthA,1999(34):935-950.[4].UV/Fenton[J].,2002(2):29-32.[5]KIMSM.EffectofFentonandphoto-Fentonreactionsonthedegradationandbiodegradabilityofnitrophenolinwatertreatment[J].ApplCatalBEnviron.1994,3:295-305.[6],,,.UV/Fenton[J].,2006,35(01):23-25.[7],,.UV/Fenton[J].,2001,17(01):35-38.[8]WAK,XIEY,ZHAOJ,etal.Photo-Fentondegradationofadyeundervisiblelightirradiation[J].MolCatal,1999,11(4):77-84.[9]MALETZKY,BAUERR.ThePhoto-Fentondegradationofnitrogencontainingorganiccompounds[J].CheMosphere,1998,37:899-909.[10],,,.Photo-Fenton[J].,2000,18(4):357-365.[11],,.Feneton[J].,2007,20(52):111-113.[12],.[J].,1995(1):52-55.[13].[J].,1997,3(27):69-73.[14]HILALN,BUSCAG,ROZADAF,etal.Useofactivatedcarbontopolisheffluentfrommetalworkingtreatmentplant:comparisonofdifferentstreams[J].Desalination,2005,185(3):297-306.()H2O2/mL3025201510502500200015001000500010015020025030035050ρ(CODCr)/(mg·L-1)/minρFenton/UV9

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