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©1994-2010ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.(2000)220075205:X52:A,,(,200092):.:;(H2O2OO3);;,;,10s,99.99%,0.1(kWh)/m3.:;;NewelectrochemicaltechniqueofwatertreatmentdisinfectionandalgaekillingWUXingwu,GAOTingyao,LIGuojian(NationalEngineeringResearchCenterforUrbanPollutionControl,TongjiUniversity,Shanghai200092)Abstract:Anewelectrochemicaltechniqueforwatertreatment,disinfectionandalgaekillingwasstudied.Theresultsindicatedthat:Theactivespecieselectrochemicallyproducedattheanodeplayedthemostimportantroleforthedisinfectionprocess.Themetal(Irandsoon)oxidescoatedtitaniumelectrodecatalyticallygeneratedactiveoxygenspecies(suchasH2O2OHOO3)whichwerestrongbactericidalagents.Thedisinfectionefficiencycouldbeincreasedbyincreasingthecurrentdensity,retentiontimeandtherateofanodeeffectiveareatotheinnerwatervolume.Bymonitoringthedissolvedoxygen,itisconfirmedthattheelectrochemicalwatertreatmenthadastrongfunctionofalgaekilling.Usingthenewequipmentdeveloped,thedisinfectionratewas99.99%,whenwaterpassedthroughtheequipmentonlyonece;andthepowerconsumptionwasabout0.1kWh/m3.Keywords:watertreatment;electrochemistry;dsinfectionandalgaeKilling:2000204210;:2000206226:(:59738510):(1952),,(),,.,.30,.,,.,,[1,2].,,.1,.;,1A/cm233000min,800min3000min2020009ACTASCIENTIAECIRCUMSTANTIAEVol.20,SupplSep.,2000©1994-2010ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.(3724h),1.1Table1Disinfectionresultswithvariousanodematerials222,min,/mL,%,/mL,%,/mL,%05.91065.91065.9106529099.995016099.99721.110681.355971999.99958099.99869.210584.4067102599.99962199.99964.610592.20331,,10min4;,.1Fig.1Influenceofchargepassedpervol2umeonthedisinfectionrateofwa2terfreeofchlorine,,CaSO42H2OMgSO4NaHCO3,0.35mS/cm.,2215cm2,7.5mm,180mL.20mA/cm20.53min,20mL.180mL,1.0106/mL.1.,99%.,,.,.22.1,.2,0.6m3.,.,,105106/mL.,.,3.,.1m3/h,.6720©1994-2010ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.);2);3),.0.5mS/cm,pH7,105107/mL.:1);2);3);4),,3748h.4Fig.4Comparisonofdifferentbacteriaforthetotalsurvivalnumberofbacteriainthewaterunderthetreatingconditionofvariouscurrentdensities,pH7,1.8105/mL,,(),().2,.0.5m3/h,06mA/cm2.,.,,,.,.,500mL,,.2.22.2.1,4.,,,5mA/cm2,100/mL.,,.,,.,,,,77:©1994-2010ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.(cm2/cm3),.,70mm,850mm;50mm().616Fig.6Effectofrateofeffectiveanodeareatotheinnerwatervolumeonthetotalsurvivalnumberofbacteriafordifferenttreatingcurrentsm3/h,.7Fig.7Changeofdissolvedoxygeninwatertreatedwithdifferentcurrentdensities,4A,,0.60.7,,.6A,.8A,.,,,,.,,.6A,,,,,.8A,,.2.2.4[3]7.,3mg/L,,,.,.,.,,.,.8720©1994-2010ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.(ATCC6538)(ATCC9372)100%,100%99.99%;10%,99.99%.,CaCO3Mg(OH)2,,.,.;,.,5%,.4(1).(2),.(3).(4)10s,99.99%,0.1kWh/m3.:[1]KRjeshwar,etal.Electrochemistryandtheenvironment[J].JApplElectrochem,1994,24:10771091[2].[J].,1997,5:1827[3],.[J].,1998,17(1):2829[4],.[J].,1998,15(5):4597: