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Carrousel/(SND)1,1,2(1., 200092;2.):Carrousel,,IAWQ1.Carrousel/,,.:Carrousel;/;1;:X703 :A :0250-3301(2002)-04-0040:(1975～),,,.StudyonSimultaneousNitrificationandDenitrification(SND)inCarrouselOxidationDitchYangQing1,LiuSuiqing1,GanShuying2(1.CollegeofEnvironmentalScience&Engineering,TongjiUniver-sity,Shanghai 200092,China;2.ShanghaiAcademyofEnvironmentalScience)Abstract:ReactorsofimpellersandditchesinCarrouseloxidationditcharethebestcombinationofpushflowreactorsandcompletemixingreactors.AccordingtothisanewmathematicalmodelbasedonActivatedSludgeModelNo.1wasputforward.ThesimultaneousnitrificationanddenitrificationofCarrouseloxidationditchprocesswasvalidatedinthelaboratory,whichwasdynamicsimulatedbythenewmodel.Theresultstallywellwithpilot-scaleexperimentdata.Keywords:CarrouselOxidationDitch;simultaneousnitrificationanddenitrification;activatedsludgeModelNo.1(ASM1);dynamicsimulation ,,.[1～4],/./,.,,.1 //,3SND:(1) /.(2)() ,.,.(3) [5],[6].2 Carrousel1.Carrousel 1 CarrouselFig.1 Flow-sheetofdenitrificationprocessbyCarrouselOxidationDitch Carrousel23200212 ENVIRONMENTALSCIENCEVol.23,Sup.Dec.,2002DOI:10.13227/j.hjkx.2002.s1.009,21,.,,,,,(2).2 CarrouselFig.2 IchnographyandmensurationdotsdistributionofCarrouselOxidationDitch3 Carrousel/Carrousel,,,,.pH7.0,1∶1,MLSS3000mg/L,(SV)70%～85%,CODCr95%.Carrousel0.8～1.5mg/L,0.5～0.8mg/L,3.Carrousel2,Carrousel,.4,31.5mg/L18mg/L.6,.TN,,,Carrousel.3 Fig.3 Distributionfigureofdissolvedoxygen4 Fig.4 Variationofvariousnitrogen4 CarrouselCarrousel.12,,2.3,,,21、2,5.Carrousel,2,V1=V3=0.0125m3,1.0～1.5mg/L,,1.51.0mg/L.V2=0.0545m3,V4=0.14m3.Carrousel,R=20,r=1.1[7],41 CFSTR,PF5 CarrouselFig.5 PatternfigureofCarrouselOxidationDitchreactor.,,.,CFSTR:dXBAdt=Q×(1+r+R)/V×(XBAO-XBA)+μASNHKNH+SNHSOKO,H+SOXBA-bAXBA(1),Q(m3/d);V(m3);XBA(g/m3);μA(d-1);SNHNH+4-NNH3-N(g/m3);KNH(g/m3);SO(g/m3);KO,H(g/m3);bA(d-1).PF(2):dXBAdt=μASNHKNH+SNHSOKOH+SOXBA-bAXBA(2)5 ASM1,.4,,6～9.6 Fig.6 VariationofDOineachditch7 Fig.7 VariationofNH3ineachditch (6),.7,1、2,.84.342 238 Fig.8 Variationofnitratenitrogenineachditch9 Fig.9 VariationofTNineachditch～4.5mg/L,,.931.5mg/L18mg/L,,,.6～9,,.6 (1)Carrousel,Carrousel.(2)Carrousel,.1、2、,21、2,CFSTR1PF1CFSTR2PF2Carrousel.(3)1,,.:1 Munchetal.SimultaneousNitrificationandDenitrificationinBench-scaleSequencingBatchReactors.Wat.Res.,1996,30(2):277～284.2 BertanzaG.SimultaneousNitrification-denitrificationProcessinExtendedAerationPlants:PilotandRealScaleExperi-ences.Wat.Sci.&Tech.,1997,35(6):53～61.3 ..,1998,24(12):6～9.4 DaiggerGT,LittletonHX.Orbal/.,1999,15(3):1～7.5 VanLoosdrechtMCM,JettenMSM.Microbiologicalcon-versionsinnitrogenremoval.IAWQ19thBiennialInternation-alConferencePreprintBook1.1998,1～8.6 ..,1997,17(6):37～38.7 HenzeM,GradyCPL,GujerWJetal.ActivatedSludgeModelNo.1.IAWPRCScientificandTechnicalReportNo.1,IAWPRC,London.1987.43