高压脉冲电凝Fenton氧化工艺处理制药废水试验研究李宇庆

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INDUSTRIALWATER&WASTEWATERVol.42No.2Apr.,2011-Fenton,,,,(,215122),、、、,,、[1-3]。,,,。-Fenton,,,,、,[4]。,,,:-Fenton,pH、、、H2O2CODCr。:-Fenton:pH4、20mm、10A、45min、H2O24mL/L、Fenton60min。,CODCr36.5%~39.2%,m(BOD5)/m(CODCr)0.130.37,,。:;Fenton;;:X787.031:A:%1009-2455(2011)02-0026-04Experimentalstudyonpharmaceuticalwastewatertreatmentbyhighvoltageelectrocagulation-FentonoxidationprocessLIYu-qing,MAJi,MAGuo-bin,YUJie,YANGWen-ting(SuzhouSujingEnvironmentalEngineeringCo.,Ltd.,Suzhou215122,China)Abstract:Usinghighvoltageelectrocagulation-Fentonoxidationprocesstotreatpharmaceuticalwastewater,theeffectsofinfluentpHvalue,spacebetweenelectrodeplates,reactiontime,H2O2dosageandsomeotherfactorsonCODCrremovalwereinvestigated.Theresultsshowedthat,theoptimalreactionconditionforthesaidprocesswas:theinfluentpHvaluewasabout4,thespacebetweenelectrodeplateswas20mm,thecurrentintensitywas10A,thereactiontimeofhighvoltageelectrocagulationwas45min,theH2O2dosagewas4mL/L,theFentonoxidationtimewas60min.Throughthetreatmentundertheabovecondition,theremovalrateofCODCrwas36.5%-39.2%,andthem(BOD5)/m(CODCr)increasedfrom0.13to0.37,thebiodegradabilityofthewastewaterwasimprovedgreatly,whichlaidasolidfoundationforsubsequentprocessandstandard-reacheddischarge.Keywords:highvoltageelectrocagulation;Fentonoxidation;biodegradability;pharmaceuticalwastewater:(863)(2009AA063901);2008(BK2008551);2010()(BE2010660):2010-12-29;:2011-01-12·26·1Tab.1QualityofrawwastewaterpH/ρ(CODCr)/(mg·L-1)ρ(BOD5)/(mg·L-1)/(μS·cm-1)5.2600652184853161Fig.1FlowofexperimentalprocessFenton2pHCODCrFig.2EffectofpHvalueonCODCrremoval234567pHCODCr/%201612840、,。,,,。Fe2+H2O2Fenton,[·OH],。,-Fenton-,,,。11.1:(320mm×130mm×170mm),,2mm,120mm,120mm,,,110mm,。380V,,,330V,50Hz。H2O2(30%)、H2SO4NaOH。1.2CODCr,BOD55,pHpHS—25pH,MU2020。1.3,,、7-(7-ACA),1。m(BOD5)/m(CODCr)=0.13,,5316μS/cm。1.4CODCr,,,pH,,,Fe2+,Fenton。NaOH,,,,,1。22.1pHCODCr20mm,10A,45min,CODCr6521mg/L,pHCODCr,2。pH<4,CODCrpH;pH4,CODCr,18.1%;pH,CODCr。,::Fe→Fe2++2e,Fe2+→Fe3++e:2H2O+2e→H2+2OH-:2Fe+6H2O→2Fe(OH)3+3H2,H+OH-Fe3+OH-,Fe(OH)3,;,,,Fe3+,Fe(OH)3,。CODCr,pH4。2.2CODCrpH4,10A,45min,CODCr6521mg/L,CODCr,3。,,,:-Fenton·27·INDUSTRIALWATER&WASTEWATERVol.42No.2Apr.,20113CODCrFig.3EffectofspacebetweenelectrodeplatesonCODCrremoval10152025303540/mmCODCr/%2016128403045607590105120/minCODCr/%24201612844CODCrFig.4EffectofreactiontimeonCODCrremoval5CODCrFig.5EffectofcurrentintensityonCODCrremoval68101214161820/ACODCr/%24201612846H2O2CODCrFig.6EffectofH2O2dosageonCODCrremoval234567H2O2/(mL·L-1)CODCr/%2420161284。20mm,CODCr;20mm,CODCr。,,,,[5]。20mm。2.3CODCrpH4,10A,20mm,CODCr,4。,CODCr,,45min,CODCr。,,,45min,。CODCr,45min。2.4CODCrpH4,45min,20mm,CODCr,5。CODCr,10A,。Fe3+,。[6]。,10A。2.5H2O2CODCrH2O2Fenton,pH4,60min,H2O2CODCr,6。H2O2,CODCr。H2O24mL/L,CODCr20.1%。H2O2,[·OH]H2O2,CODCr。,H2O2Fe2+Fe3+,Fe3+,[·OH][7]。,,H2O24mL/L。2.6FentonCODCrpH4,H2O24mL/L·28·《》(GB50648—20112011-12-01)878,《》,GB50648—2011,2011121。。、、。7FentonCODCrFig.7EffectofFentonreactiontimeonCODCrremoval306090120150180/minCODCr/%2420161284,CODCr,7。,CODCr,Fenton,60min,CODCr。,Fenton,。,CODCr,60minFenton。2.7-FentonNaOHpH8.5~9.0,,,CODCr12.1%~13.7%,-Fenton-CODCr36.5%~39.2%,m(BOD5)/m(CODCr)0.130.37,,。3(1)-Fenton,CODCr18.1%~18.5%,FentonCODCr20.1%~21.3%,CODCr12.1%~13.7%,-Fenton-CODCr36.5%~39.2%。(2)-Fenton:20mm、pH4、10A、45min、H2O24mL/L、Fenton60min。(3)、、CODCr、,,。:[1].[J].,2006,8(4):13-16.[2],,,.[J].,2003,16(1):39-42.[3],,,.Fenton[J].,2008,39(3):68-71.[4],,.CODCr[J].,2005,28(2):79-81.[5],,.[J].,2008,34(6):1-2.[6],,,.[J].,2006,28(2):23-26.[7],,.-Fenton[J].,2008,37(9):1074-1077.:(1976-),,,2005,,,()0512-62793619()yvqinglee@163.com。,,,:-Fenton················································29·

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