COD浓度和进水流量比对一体化工艺脱氮除碳的影响李德豪

3　8环境工程学报Vol.3,No.820098ChineseJournalofEnvironmentalEngineeringAug.2009COD李德豪1,3　殷旭东1,2　高桂枝2(1.,525000;2.,210044;3.,200237)　　,,(R=Q/Q)CODOCO。,CODRsCOD,COD50mg/L,92%;CODRsTN,COD100mg/L、200mg/L,TNRs;COD300mg/L,TNRs,Rs3∶1TN,87%。　　COD　　OCO　　X703　　　A　　　1673-9108(2009)08-1360-05InfluenceofdifferentinfluentflowrateratiosandCODconcentrationoncarbonandnitrogenremovalinintegralprocessLiDehao1,3　YinXudong1,2　GaoGuizhi2(1.SchoolofChemicalEnvironmentalEngineering,MaomingUniversity,Maoming525000,China;2.SchoolofEnvironmentalScienceEngineering,NanjingUniversityofInformationScienceTechnology,Nanjing210044,China;3.SchoolofResourceEnvironmentalEngineering,EastChinaUniversityofScienceTechnology,Shanghai200237,China)Abstract　Influenceofdifferentinfluentflowrateratios(R=Qanaerobic/Qanoxic)andCODconcentrationonthecarbonandnitrogenremovalbytheintegralOCOprocesswiththecenter-islandsettlingtankwasstudiedwhenthetotalinfluentflowratefromanaerobiczoneandanoxiczoneremainsconstant.TheCODremovalefficienciesdonotchangeobviouslyatdifferentinfluentRsandCOD,andtheeffluentCODislessthan50mg/L,theCODremovalrateismorethan92%.TheTNremovalefficienciesaredecidedbyRsandCOD.TheTNremovaleffi-cienciesincreasegraduallyalongwithreductionofinfluentRswhentheinfluentCODis100mg/Lor200mg/L.TheTNremovalefficienciesincreasefirstandthendecreasealongwiththereductionofRswhentheinfluentCODis300mg/L.ThehighestTNremovalrateis87%whentheinfluentRsis3∶1.Keywords　influentflowrateratio;influentCODconcentration;center-islandsettlingtank;integralOCOprocess;carbonandnitrogenremoval:(8152500002000012);(2002C32106);(2001-0167):2008-10-14;:2008-11-24:(1964～),,,,。E-mail:[e-mail]　　,、、,,[1～4]。OCO———OCO,,,,2,,。OCO,、pH、、C/N。C/N,COD300～400mg/L[5～7],8:COD。COD200mg/L,,,C/N。,,,OCOCOD。1　1.1　OCOPVC,240L,、100、90、3020L。、、,。1。1　Fig.1　SchematicdiagramofintegratedbioreactorOCO、。,※※()※()※,。,,;,;。、,,,,,。1.2　,、、、、、、、、。:COD100、200300mg/L,TN40mg/L,(CaCO3)350～400mg/L,pH6.8～8.5。,B/C0.75～0.85。。,,COD80%,。1.3　CODHACH;;;-;;pHpH;DOHACHLDOTMHQ10;MLSS。1.4　DO2mg/L,0.5mg/L,0.1mg/L,MLSS3000mg/L,15d,pH7.5～8.0,25～32℃,TN35mg/L,20L/h,9∶1、3∶1、1∶1、1∶3、1∶9,COD100、200300mg/L。2　2.1　CODOCO、,,。,,。13613COD100、200300mg/L,(∶)(9∶1、3∶1、1∶1、1∶3、1∶9),,7d,1d1,2。2　CODCODFig.2　InfluenceofdifferentinfluentflowrateratiosandCODonCODremovalefficiency2,COD100、200300mg/L,COD,,90%。,:,;;;,。,OCO,COD,,(GB18918-2002)(A):COD≤50mg/L。2.2　NH3-NRittmann[8]Strous[9],NH3-NC/N。,,,,。,COD,,3。3　CODNH3-NFig.3　InfluenceofdifferentinfluentflowrateratiosandCODonNH3-Nremovalefficiency3,9∶1、3∶1,COD100、200300mg/L,0.5mg/L,99%,;1∶1、1∶3、1∶9,COD100mg/L、200mg/L,1mg/L。COD300mg/L,1∶1、1∶3、1∶98、10.517.5mg/L,,,80%、72%、55%。:COD100mg/L200mg/L,COD,,,,,;COD300mg/L,9∶13∶1,,,,COD,,,。COD300mg/L,1∶1,C/N,,,,。,COD100mg/L、200mg/L,,COD300mg/L,13628:COD。,COD。2.3　TN[10,11]。,,,。C/N,。CODTN4。4　CODTNFig.4　InfluenceofdifferentinfluentflowrateratiosandCODonTNremovalefficiency4,9∶1,,10%。COD100mg/L300mg/L,COD,24mg/L5mg/L,TN28%80%,,COD100mg/L、200mg/L,(3),,,TN;COD300mg/L,,,TN。3∶1,,25%,。COD100mg/L300mg/L,21mg/L2mg/L,TN32%87%,COD。9∶1,3COD,TN9∶1TN。1∶1,50%,。COD100mg/L300mg/L,21mg/L2mg/L,TN32%72%,COD。COD200mg/L,TN9∶13∶1,COD300mg/L,,,3∶1TN。1∶3,,,C/N。COD100mg/L300mg/L,19mg/L1mg/L,TN35%69%。COD100mg/L200mg/L,COD300mg/L,TN。1∶9,90%,。4,COD100mg/L300mg/L,TN,COD200mg/LTN,69%,COD300mg/L,,TN52%。,COD100mg/L、200mg/L,TN;COD300mg/L,TN,3∶1TN,87%。,COD13633TN。3　　(1)CODCOD,COD50mg/L。(2)CODTN,COD300mg/L,3∶1TN,87%。(3),。[1]YouS.J.,HsuC.L.,ChuangS.H.,etal.NitrificationefficiencyandnitrifyingbacteriaabundanceincombinedAS-RBCandA2/Osystems.WaterResearch,2003,37(10):2281～2290[2],,,..,2008,24(1):30～34[3],,,.A/O.,2007,30(11):17～19[4],,,.-.,2003,5(2):23～26[5],,..,2001,27(12):31～34[6],,,.OCO.,2004,30(8):17～20[7],,,.OGO.,2006,22(3):69～72[8]RittmannB.E.Aerobicbiologicaltreatment.Environ.Sci.Technol.,1987,21(2):128～136[9]StrousM.,HeijnenJ.,KuenenJ.G.,etal.Thesequen-cingbatchreactorasapowerfultoolforthestudyofslowlygrowingammonium-oxidizingmicroorganisms.Appl.Envi-ron.Microb.,1998,50(5):589～596[10]XingX.H.,JunB.H.,YanagidaM.,etal.EffectofC/Nvalueonmicrobialsimultaneousremovalofcarbona-ceousandnitrogenoussubstancesinwastewaterbysinglecontinuous-flowfluidized-bedbioreactorcontainingporouscarrierparticle.Biochem.Eng.J.,2000,5(1):29～37[11]CollivignareC.,BertanzaG.Simultaneousnitrification-denitrificationprocessesinactivatedsludgeplantsper-formanceandapplicability.WaterSci.Tech.,1999,40(4～5):187～1941364