二氧化氯消毒效果影响因素

1213221．3003842．3000403．710055、pH、、。pH6．0～9．0CTFe3+。CTTU991．25A1673－9353201103－0019－04doi10．3969/j．issn．1673－9353．2011．03．005ExperimentoninfluencingfactorsofdisinfectionefficiencybychlorinedioxideHeWenjie12ZhangTiantian1LiRongguang3WuWei2MengXianxian21．DepartmentofEnvironmentandMunicipalEngineeringTianjinInstituteofUrbanConstructionTianjin300384China2．TianjinWaterworksGroupCo．Ltd．Tianjin300040China3．SchoolofEnvironmentalandMunicipalEngineeringXi’anUniversityofArchitectureandTechnologyXi’an710055ChinaAbstractAcomparisontestwasconductedtostudytheinactivationefficiencyonEnterobacteriaceaewiththreekindsoffrequently-useddisinfectantchlorinedioxideliquidchlorineandchloramineandtheinfluencingfactorssuchaspHtemperatureandincubatingmediadilutionondisinfectionefficiencywereinvestigated．Theresultshowedthatchlorinedioxidehadthefeaturesofhighefficiencyandbroadspectrum．ThepHhadfewimpactondisinfectionefficiencyofchlorinedioxidewhenpHwasat6．0to9．0．Theincreaseoftemperaturecouldenhancetheinactivation．EnterococcusfaecalisbecameresistanttochlorinedioxideastheincreaseofincubatingmediadilutionandCTvaluesincreasedobviouslytoachievesameremovalrate．DosageofFe3+couldevidentlydecreasethedisinfectionefficiencyofchlorinedioxide．KeywordschlorinedioxidedisinfectionEscherichiacolClostridiumperfringensEnterococcusfaecalisCTinactivationrateliquidchlorinechloramine·91·5320116WATERTECHNOLOGYVol．5No．3Jun．2011。2070、。。11.1Escherichiacoli、Clostridiumperfringens、Entero-coccusfaecalisATCCATCC25922、ATCC13124、ATCC19433。1.237℃24h。4000r/min10min0．1mol/LPBS10mLPBS。PBS。1.30．1mL9mL。22.1、CTCT1。CT。、106CFU/mL1。12logCTTab．1CTneededtoachieve2loginactivationratemg·min/L0．142．0244．871．171．9220．808．229．2327．4432logCT＜＜＞＞。2．630．37V2。3。。2.22.2.1pH4×106CFU/mL2mg/LpH1。1pHFig．1EffectofpHoninactivationefficiencyofClostridiumperfringensbyClO2pH6．07．5pH9．0pH。pH6．0～9．0pH。pH=3．0～9．04－5pH。。。OCl－HOClHOClpHHOClpH。·02·53201162.2.21．5×106CFU/mL82330℃0．3mg/L2。2Fig．2EffectoftemperatureoninactivationefficiencyofEnterococcusfaecalisbyClO2。。28℃30℃CT99、CT99．94．56．4。。2.2.3110100pH7．6。2log3log4logCT2。2ClO2Tab．2EffectofdilutionsofculturemediaoninactivationefficiencyofEnterococcusfaecalisbyClO2mg·min/L/CFU·mL－1ClO2/mg·L－1CT99/mg·min·L－1CT99．9/mg·min·L－1CT99．99/mg·min·L－112．7×1040．20．40．60．8103．9×1040．20．60．91．11003．6×1040．22．03．14．12log3log4logCT0．40．60．8mg·min/L10100CT99、CT99．9CT99．991．43．1。CT。2.2.4Fe3+Fe3+Fe2+Fe3+。Fe2+Fe3+Fe3+6。Fe3+。1．8×107CFU/mL0．08mmol/LFeCl30．2mg/L13571015min3。15minFe3+16Fe3+。Fe3+。3Fe3+Fig．3EffectofFe3+oninactivationefficiencyofEnterococcusfaecalisbyClO23①。。②pH6～9。pHpH。③。④·12·2011653。CT。⑤Fe3+。Fe3+。1．J．200321449－52．2．J．200817151－52．3．J．201029416－18．4．J．199612313－16．5HuangJLWangLRenNQetal．DisinfectioneffectofchlorinedioxideonbacteriainwaterJ．Wate[e-mail]2011－04－1218O3－ACCODMnCODMnO3－ACO3－AC。④＞1．5mg/L、Br－0．29mg/LBrO－3。1GB5749—2006S．2．J．200935318－22．3．J．200935357－61．4．－J．200526679－83．5CJ/T3028．2—94、、[e-mail]2011－05－16·22·5320116