高压脉冲电晕放电等离子体降解废水中苯酚

:025322468(2002)20520566204:X13111:A,,(,200237):...100mgL-1180min,6713%.420min,TOC8318%.:;;;;Apreliminarystudyofpulsedhigh2voltagecoronadischargeplasmaforthedegradationofphenolinaqueoussolutionCHENYinsheng,ZHANGXinsheng,YUANWeikang(EastChinaUniversityofScienceandTechnology,UNILabofChemi2calReactionEngineering,Shanghai200237)Abstract:Effectsofsomefactorswerestudiedonthedegradationofphenolinaqueoussolutionwithpulsedhigh2voltagecoronadischargeplas2ma.Thedegradationofphenolcouldberaisedconsiderablybyincreasingthepeakvoltageanddischargefrequencyandbyprolongingthedis2chargetime.Theexistenceofradicalscavengersuchasn2butanolandbuffersuchasboratecoulddecreasethedegradationofphenol.Themaximumdegradationof100mgL-1phenolsolutionwas6713%afterdischargingfor180minutes.TheTOCofwastewaterdecreasedby8318%whendischargetimewas420minutes.Keywords:pulsedhigh2voltagedischarge;plasma;degradation;phenol;wastewatertreatment:2001210215;:2002203207:(1974),,.E2mail:[e-mail].[1],,.,..,()()()[24].[5,6].1.(1).2.(50mm,200mm).,40mm.150mL,.200mgL-1.100mgL-1.310cm.:50kV400ns50ns250Hz.P6105A100MHz.pHPHB21DDS211C.(GB7490287)22520029ACTASCIENTIAECIRCUMSTANTIAEVol.22,No.5Sep.,2002.().1Fig.1Schematicdiagramofpulsedhigh2voltagedischargedegradationoforganiccompoundsinaqueoussolution212kVFig.2Anexampleofthewaveformofthevoltage22113Fig.3EffectofpeakvoltageondegradationofphenolpH710,80SPcm.60Hz,019mm.3.,,,..212pH71080SPcm.32kV.019mm.4.4Fig.4Effectofdischargefrequencyondegradationofphenol.,,.,.,.,[7]..100Hz60Hz10Hz.34,..,32kV100Hz7655:,.,.213[8],..32kV,60Hz,016mm.,pH=71080SPcm;,pH=10101000SPcm.56.5Fig.5Effectofn2butanolondegradationofphenol6Fig.6EffectofsodiumborateondegradationofphenolOH108LP(mols)[8],..OH[9].OH,.OH.7TOCFig.7TOCvsdischargetime214TOC32kV,60Hz,016mm,pH710SPcm80SPcm,7.Ca(OH)2CO2.215.[10].,,,,,.,,...,86522.,.,ns,1104,.,,,,.,.,,.3(1).(2),.(3)TOCCO2.:[1].[J].,1990,2:3442[2],,.[J].,2000,3:1719[3],.[J].,1998,11:2931[4],,.[J].,2000,13(1):3235[5],,.[J].,1996,16(1):7376[6],,.[J].,1999,19(5):406409[7],.[J].,1997,2:1316[8]SatoM,OhgiyamaT,ClementsJS.Formationofchemicalspeciesandtheireffectsonmicroorganismsusingapulsedhighvoltagedischargeinwater[J].IEEETransactionsonIndustryApplication,1996,32(1):106112[9]SharmaAK,LockeBR,ArcePetal.Apreliminarystudyofpulsedstreamercoronadischargeforthedegradationofphenolinaqueoussolutions[J].HazardousWaste&HazardousMaterials.1993,10(2):209219[10],.[J].,1997,23(5):45489655: