臭氧接触池臭氧投加方式的优化

26920139ＲesearchofEnvironmentalSciencesVol．26No．9Sep．2013．J．20132691014-1021．YUANＲongfangTIANYeSHIChunhongetal．OptimizationofozonedistributionmethodintheozonecontactorJ．ＲesearchofEnvironmentalSciences20132691014-10[e-mail]．*[e-mail]12121212*331．1000832．1000833．100085O3．ρO3、．3ρO3．3∶3∶178.1%47.5%3mgL76.8%40.3%ρO30.26mgLBrO3－．X524A1001－6929201309－1014－08OptimizationofOzoneDistributionMethodintheOzoneContactorYUANＲong-fang12TIANYe12SHIChun-hong12ZHOUBei-hai12GUJun-nong3ZHANGChun-lei31．KeyLaboratoryofEducationalMinistryforHighEfficientMiningandSafetyinMetalMineUniversityofScienceandTechnologyBeijingBeijing100083China2．DepartmentofEnvironmentalEngineeringSchoolofCivilandEnvironmentalEngineeringUniversityofScienceandTechnologyBeijingBeijing100083China3．WaterQualityMonitoringCenterBeijingWaterworksGroupBeijing100085ChinaAbstractThepollutionofsurfacewaterisbecomingmoreandmoreseriouswiththeeconomicdevelopment．Therequirementsforthedrinkingwaterqualitywashigherthanbeforesincethe“StandardsforDrinkingWaterQuality”GBT5749-2006wasimplemented．Inordertoremovetheorganicpollutantsozonationwasemployedasatoolinthedrinkingwatertreatmentprocessandtheozonecontactorwasusedtomakeozonediffusedintothewater．Theozonedistributionisakeyfactortothereactionefficiencybetweenozoneandtheorganicpollutantinozonecontactor．TheinfluenceofozonedistributionintheozonecontactoronmasstransferefficiencyO3contentandorganicremovalefficiencywasinvestigatedwhilewatersampleswerecollectedfromtheMiyunＲeservoir．Thegas-liquidmasstransferwasenhancedandtheremovalefficiencyoforganicpollutantwasimprovedwhenthenumberofaerationpointincreased．Howeverthemasstransferefficiencyofozoneshowednosignificantincreasewhenfour-pointaerationwasused．MoreoverO3contentintheeffluentwaterwastoohighforthefollowingprocess．Themasstransferefficiencyofozoneinthewaterwas78.1%andtheremovalefficiencyofoganicswas47.5%whenthree-pointaerationwasusedwiththeproportionof3∶3∶1．Whenhumicacidof3mgLwasaddedinthewatersamplesthemasstransferefficiencyofozonewas76.8%andtheremovalefficiencyofoganicswas40.3%usingthesamemethod．TheO3contentintheeffluentwaterwas0.26mgLwhichwouldnotdestroythebiofilmonthesurfaceoftheactivatedcarboninbiologicalactivatedcarbonprogress．Attheproportionof3∶3∶1theutilizationratioofozonevaluewasthehighest60.1%andthegenerationamountofbromatewasthelowest．Thereforethebestmethodofgasdistributioninozonecontactorwasthree-pointaerationwiththeproportionof3∶3∶1．Keywordsozonecontractordistributionmethodthree-pointaerationmasstransferefficiencydrinkingwater9．200771GBT5749—2006《》．、1-3．4-6．78-10．、11．．．Kim1210.15m、2.74m、Kumar136.4cm、39cmpHρO3Kim142Ⅰ1.05m、、Ⅱ0.69m、、．2～37151.5～2.5mgLρO30.2～0.4mgLHＲThydraulicretentiontime10min16．．40%～50%1718-1920．UV254、、ρTOC、ρCODMnρ21-22．ρO3UV254ρO3、．11.13mgL、BrO3－．1．1Table1Characteristicsofthewater℃pHρDOmgLNTUρCODMnmgLUV254cm－117～258.1～8.66.2～8.10.98～1.531.97～2.690.032～0.04820～227.5～7.76.0～7.83.26～3.553.44～4.060.221～0.2361.241．2m100mm65L30mm50mm0.2～100.0μm4400mm．FY5WGQ－TG10S．1.3HＲT750s5.2Lmin2.5mgL．ρO3ρO3．ⅣⅠⅣⅠⅣ、、、Ⅰ、Ⅰ、Ⅱ、Ⅰ、Ⅱ、Ⅲ4．HＲT15minⅠ1HＲT30、70、110、150、220、260、300、340、410、450、490、530、600、640、680、720750sρO35101261～17mm．1Fig.1TheschematicoftheinstallationUV254．23．masstransferefficiencyMETMTE=ρQ－ρQρQ×100%1ρρO3mgLQLminρρO3mgLQLmin．1.4CJT3028.2—1994《、、》ρO3．DＲ5000UV254．50mL1cm254nmGBT5750.10—2006《》．ICS－1000ρBrO3－．22.12.1.12ρO3．ρO3HＲTHＲT150sρO30.940.96mgLρO3ρO30.400.47mgL．51.2%60.6%．24-252ρO3Fig.2Influenceofone-pointozonedistributiononozoneconcentration61019．UV25422.7%Ⅰ5.5%ⅡρO313.2%Ⅲ、ⅣρO3．、60.6%．．2.1.2Ⅰ50%～80%15．51∶1、2∶1、3∶1、3∶24∶167.7%、65.7%、62.3%、75.5%60.2%ρO33、4．1—1∶12—2∶13—3∶14—3∶25—4∶1．3ρO3Fig.3Influenceoftwo-pointozonedistributiononozoneconcentration3ρO3HＲT．ⅠρO3ρO3．ρO3．Ⅰ．Ⅰ．3∶2ρO31.06mgLρO30.70mgL．4Ⅰ、Ⅱ12%～18%11%～17%Ⅲ、ⅣρO31%～10%．Ⅰ4Fig.4Influenceoftwo-pointozonedistributiononremovalefficiencyoforganicpollutantρO3ⅡρO3Ⅲ、ⅣρO3．．ⅠⅠ．3∶245.8%．2.1.315Ⅰ、Ⅱ、Ⅲ80%～40%、10%～30%10%～30%．101∶1∶1、2∶1∶1、2∶2∶1、3∶1∶1、3∶2∶1、3∶3∶1、4∶1∶1、4∶2∶1、4∶3∶14∶4∶1．87.7%、76.2%、81.6%、67.1%、82.0%、78.1%、68.0%、66.6%、73.3%69.4%．5HＲTρO3．ⅠρO3340sⅡρO3ⅢρO3490s．1∶1∶1、3∶2∶1、2∶2∶1、3∶3∶12∶1∶1．3∶3∶1ρO3．5．61∶1∶152.9%7101261—1∶1∶12—2∶1∶13—2∶2∶14—3∶1∶15—3∶2∶16—3∶3∶17—4∶1∶18—4∶2∶19—4∶3∶110—4∶1∶1．5ρO3Fig.5Influenceofthree-pointozonedistributiononozoneconcentrationⅠ30%Ⅲ、Ⅳ．ⅠUV254ⅡUV254Ⅲ、Ⅳ．ρO33∶3∶147.5%．6Fig.6Influenceofthree-pointozonedistributionmethodonorganicpollutantremovalefficiency2.1.43∶3∶1∶1、4∶3∶2∶14∶4∶1∶181.4%、80.4%73.9%．7ρO3HＲTρO3．3∶3∶1∶1851.3%Ⅰ、Ⅱ30%4∶4∶1∶1Ⅰ．ρO3．1—3∶3∶1∶12—4∶3∶2∶13—4∶4∶1∶1．7ρO3Fig.7Influenceoffour-pointozonedistributiononozoneconcentration8Fig.8Influenceoffour-pointozonedistributionmethodonorganicpollutantremovalefficiency810192.2ρO3、、ρO3．53mgLρO3、．2.2.1ρO31∶1∶1、3∶2∶1、2∶2∶1、3∶3∶12∶1∶176.0%、68.8%、64.9%、76.8%76.4%ρO3HＲT9．1∶1∶13ρO3HＲT530s0.79mgLⅣρO30.77mgL．3∶3∶1ρO3340s0.55mgLρO30.26mgL．1—1∶1∶12—2∶1∶13—2∶2∶14—3∶2∶15—3∶3∶1．9ρO3Fig.9Influenceofozonedistributionmethodonozoneconcentrationafteraddinghum