Treatmentofsaponinwastewaterbyelectro-FentonoxidationtechnologyHuXiaolian,WangXifeng(SchoolofCivilEngineering,HunanUniversityofScienceandTechnology,Xiangtan411201,China)—Fenton,(,411201)[]—Fenton,、pH、、、COD。:90min,pH=4.0,0.25m3/(h·L),10mA/cm2,24V。,COD91%93%。[]—Fenton;;[]X703.1[]B[]1005-829X(2009)04-0021-04Abstract:Theelectro-Fentontechnologyhasbeenusedfortreatingsaponinwastewater.Themaininfluentialfac-tors,suchasreactiontime,pH,currentdensity,voltage,andairflowareinvestigated.Theresultsshowthattheoptimumconditionsareasfollows:reactiontime=90min,pH=4.0,currentdensity=10mA/cm2,voltage=24Vandairflow=0.25m3/(h·L).Undertheseconditions,theremovalratesofCODandchromaareabove91%and93%re-spectively.Keywords:electro-Fenton;saponinwastewater;wastewatertreatment〔1〕,、(UASB)、(SBR),,〔2〕。Fenton(2.8V)HO·,〔3-4〕。—FentonFe2+H2O2Fenton,Fenton,〔5-7〕。Fenton,—Fenton:,;,,;,,、,Fenton。—Fenton。11.1。1。1.2,,,,,。,。H2O2[](07C286)29420094IndustrialWaterTreatmentVol.29No.4Apr.,20091SO42-/(mg·L-1)300~500Cl-/(mg·L-1)800~1000pH0.4~4.0/2000~3000COD/(mg·L-1)4000~430021——2009-04,29(4)Fe2+HO·,HO·。pH,,TPR,;COD。1.3,1.0m×0.5m×0.5m,0.45m×0.45m,:0.45m×0.45m。Tu-1800-();(Qmax=2500L/h);,。1。2Fenton,—Fenton,、pH、、、5。,COD4031mg/L,1000,:90min,pH=4.0,0.25m3/(h·L),10mA/cm2,24V。2.1CODCOD4031mg/L,1000,pH=4.0,0.25m3/(h·L),10mA/cm2,24V,COD,2。2,—Fenton。Fe2+/H2O2,Fe3+/H2O2。90min,,90~180min,COD。,Fe2+H2O2HO·,HO·,,,COD。,Fe2+H2O2HO2·Fe3+,HO2·HO·〔8〕,Fe3+Fe2+,Fe3+Fe2+,,COD。COD,90min。2.2pHCODCOD4031mg/L,1000,90min,0.25m3/(h·L),10mA/cm2,24V,pH,pHCOD,3。3,pH4,CODpH,pH4,CODpH。,Fenton,H+,pH,,,Fe3++H2O2→Fe2++HO2·+H+,Fe3+Fe2+,;,HO·+H++e-→H2O,H+,。pH,,Fe3+,。pH4.0,COD。2.3CODH2O2TPR11009080706050403020100306090120150180COD/%/min2COD1009080706050403020100306090120150180/minpH=2.0pH=3.0pH=4.0pH=5.0pH=6.0pH=7.0pH=8.0COD/%3pHCOD22——2009-04,29(4),,Fe2+。COD4031mg/L,1000,90min,pH=4.0,0.25m3/(h·L),24V,COD,4。4,,COD,,H2O2,12mA/cm2,,,,〔9〕,pH。,FentonFe2+H2O2(Fe2+/H2O2)〔10〕,H2O2Fe2+HO·,HO·H2O,HO·,Fe2+。,10mA/cm2,(GB20425—2006)。2.4COD—Fenton,,,,,—Fenton。COD4031mg/L,1000,90min,pH=4.0,0.25m3/(h·L),10mA/cm2,COD,5。5,10V,—FentonCOD,,,24V,COD93.7%;,COD,32VCOD92.11%。5,COD,,,H2O2,。,,,Cl-,。2.5COD,,;,H2O2。COD4031mg/L,1000,pH=4.0,90min,10mA/cm2,24V,,COD。6。6,COD,,,COD,0.20m3/(h·L),。95857565554535254681012141618/(mA·cm-2)pH=2.0pH=3.0pH=4.0pH=5.0pH=6.0COD/%4COD04812162024283236/V/%COD5COD100908070605040302010004812162024283236/minQ=0Q=10m3/(h·L)COD/%6QCODQ=20m3/(h·L)Q=25m3/(h·L)Q=30m3/(h·L)1009080706050403020100,:—Fenton23——2009-04,29(4)(15),—FentonHO·,Fe2+,,,0.30m3/(h·L),COD,。,—Fenton,—Fenton。,0.25m3/(h·L),(GB20425—2006)。3—Fenton,Fenton,,Fenton。,COD,,:90min,pH=4.0,0.25m3/(h·L),10mA/cm2,24V。COD91%93%,。[][1],,,.—[J].,2006,26(10):52-55.[2],,,.()———[J].,2006,28(1):23-26.[3],,,.UV/Fenton[J].,2007,23(3):60-63.[4],,,.-Fenton[J].,2005,25(5):30-33.[5],.[J].,2004,23(6):253-256.[6],,,.—Fenton[J].,2003,24(6):106-111.[7],,,.—FentonCTMP[J].,2006,25(6):120-123.[8]SunYunfu,JosephJP.Photochemicalreactioninvolvedinthetotalmineralizationof2,4-DbyFe3+/H2O2/UV[J].EnvironmentalScienceTechnology,1993,27(2):304-310.[9],,.[J].,2006,24(5):29-30.[10],.UV-Fenton[J].,2008,24(13):58-61.[](1973—),,,,、。:13100329098,E-mail:wxfwk88@163.com。[]2008-12-12()!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!![](1973—),1994,,。,。:021-65981263,E-mail:pp315618@163.com。[]2008-12-26()[J].,1994,15(4):9-13.[15]LiChenlin,FangHHP.Inhibitionofheavymetalsonfermenta-tivehydrogenproductionbygranularsludge[J].Chemosphere,2007,67(4):668-673.[16]ZhengXian-Jun,YuHan-Qing.Biologicalhydrogenproductionbyenrichedanaerobicculturesinthepresenceofcopperandzinc[J].Environ.Sci.Heal.,2004,39(1):89-101.[17]FangHHP.InhibitionofbioactivityofUASBbiogranulesbyelectroplatingmetals[J].Pure&Appl.Chem.,1997,69(11):2425-2429.[18]ZayedG,WinterJ.Inhibitionofmethaneproductionfromwheybyheavymetals:protectiveeffectofsulfide[J].Appl.Micro-biol.Biotechnol.,2000,53(6):726-731.[19]JansenS,SteffenF,TheelsWF,etal.SpeciationofCo()andNi()inanaerobicbioreactorsmeasuredbycompetitivelig-andexchange-adsorptivestrippingvoltammetry[J].Environ.Sci.Technol.,2005,39(24):9493-9499.[20]Gonzalez-GilG,KleerebezemR,LettingaG.Effectsofnickelandcobaltonkineticsofmethanolconversionbymethanogenicsludgeasassessedbyon-lineCH4monitoring[J].Appl.Environ.Microbiol.,1999,65(4):1789-1793.[21]LapagliaC,HartaellPL.Stress-inducedproductionofbiofilminthehyperthermophilearchaeoglobusfulgidus[J].Appl.Environ.Microbiol.,1997,63(8):3158-3163.[22]Gonzalez-GilG,JansenS,ZandvoortMH,etal.Effectofyeastex-tractonspeciationandbioavailabilityofnickelandcobaltinanaer-obicbioreactors[J].Biotech.Bioeng.,2003,82(3):134-142.[23]NozoeT,YoshidaK,YasudaM.EffectofEDTAonreductionprocessinsubmergedpaddysoilwithricestraw[J].SoilSci.PlantNutr.,1994,40(1):155-164.[24]BarkerDJ,StuckeyDC.Areviewofsolublemicrobialproduct(SMP)inwastewatertreatmentsystems[J].Wat.Res.,1999,33(14):3063-3082.[25]NeilandsJB.Siderophores:structureandfunctionofmicro-bialirontransportcompounds[J].Biol.Chem.,1995,270(45):26723-26726.[26]LinChiu-Yue.Effectofheavymetalsonvolatilefattyacidde