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2002,22(5)412~415ChinaEnvironmentalScience1,2,2(1.,1000442.,100012),,10%.;.,0.14mg/L,4.7mg/(L⋅h),kN=0.37mg/L;kD=0.48mg/L.X131.2A10006923(2002)05041204Studiesontheaerobicdenitrificationprocessfortreatingammonianitrogenrichleachate.ZHAOZong-sheng1,LIBing-wei2,LIUHong-liang2(1.SchoolofCivilEngineeringandArchitecture,NorthernJiaotongUniversity,Beijing100044,China2.ChineseResearchAcademyofEnvironmentalSciences,Beijing100012,China).ChinaEnvironmentalScience.2002,22(5)412~415AbstractTheresultsoftestsshowthatTNremovalratehigherthan10%couldbereachedintheaerobicdenitrificationprocessofcommonactivatedsludgetechniquefortheammonianitrogenrichleachate.NitrificationratedecreaseswithdecreaseoftheDO,anddenitrificationrateincreaseswiththedecreaseoftheDO.Accordingtothekineticanalysisofnitrificationanddenitrification,thereisapointatwhichnitrificationrateisequaltodenitrificationrateof4.7mg/(L⋅h)whenDOisabout0.14mg/L,TheralatedkineticsparametersarekN=0.37mg/LfornitrificationandkD=0.48mg/Lfordenitrification.Keywordsaerobicdenitrificationleachateammonianitrogenkinetics,2mg/L,0.1mg/L[1].,,[2,3].Pseudomonasdenitrificans()Nitrosomonas()ThiosphaerapantotrophaAlcaligenesfaecalis../.11.1,COD2700~4100mg/L,BOD5380~1700mg/L,NH4+N480~590mg/L,660~870mg/L,pH8~8.2,4720~5240mg/L.1.2:→→→→,,.,pH,40L,.1.3CODCr:;NH4+N:;NO3N:;NO2N:N;SS:;:;DO:;:.20011204(969090502)*541322.1/1[4].1000mg/L.0.48,2.40,1.50,1.02mg/L1~4.10.48mg/LTable1AverageoperationaldataofthesystemataverageDOof0.48mg/L(%)(/)COD(mg/L)40962488104574/56BOD5(mg/L)17064821599/97(mg/L)58357921591/91(mg/L)86778867214/22NO3N/NO2N(mg/L)26.0/4.15359/72.0pH7.807.84=93=5967mg/L=156ÄCOD/ÄTN=12.4ÄBOD5/ÄTN=4.0rN=9.8mg/(L⋅h)rD=3.1mg/(L⋅h)22.40mg/LTable2AverageoperationaldataofthesystemataverageDOof2.40mg/L(%)(/)COD(mg/L)3901259086778/67BOD5(mg/L)162129246.597/84(mg/L)5215577.596/96(mg/L)8077386995/13NO3N/NO2N(mg/L)5.9548/0.235pH7.887.68=83=7326mg/L=114ÄCOD/ÄTN=44ÄBOD5/ÄTN=6.3rN=14.9mg/(L⋅h)rD=1.1mg/(L⋅h)31.50mg/LTable3AverageoperationaldataofthesystemataverageDOof1.50mg/L(%)(/)COD(mg/L)2706163271673/56BOD5(mg/L)162124412.999/95(mg/L)48149911.298/98(mg/L)662594544.88/17NO3N/NO2N(mg/L)8.9/0.2454.6/0.29pH7.887.55=91=8685mg/L=104ÄCOD/ÄTN=18.6ÄBOD5/ÄTN=4.2rN=14.2mg/(L⋅h)rD=1.3mg/(L⋅h)41.02mg/LTable4AverageoperationaldataofthesystemataverageDOof1.02mg/L(%)(/)COD(mg/L)1592155459263/62BOD5(mg/L)37216817.789/95(mg/L)54554020.298/98(mg/L)79469461411/21NO3N/NO2N(mg/L)8.9/0.2514/0.25pH7.887.55(mg/L)47214741598=85=8220mg/L=103ÄCOD/ÄTN=12.0ÄBOD5/ÄTN=1.88rN=12.6mg/(L⋅h)rD=2.2mg/(L⋅h)414221~4,,,[3,5,6].500mg/L,.,(1,2).,,.,.1Fig.1RelationbetweenammoniaconcentrationoftheeffluentandDO2.2pH,[1]:ONONNSkSrr+=max,(1):rN,max[mgNH4+N/(L⋅h)];kN(mg/L);SO(mg/L).2Fig.2RelationbetweenTNremovalrateandDOinaerationtank[7]:ODDDDSkkrr+=max,(2):rD,max[mgNO2N/(L⋅h)];kD(mg/L).rD=rN,/,:S*O=max,max,max,2max,max,2max,max,24)()(NNDDNDNDDNDrkkrrrrkrrk+-+--(3):S*O/(mg/L).(1)(2)1~4rN,max=17.33NH4+Nmg/(L⋅h),kN=0.37mg/L,rD,max=6.2NO2Nmg/(L⋅h),kD=0.48mg/L.(3),S*O=0.14mg/L,rN=rD=4.7mg/(L⋅h).,kNkD,0.37mg/L0.48mg/L,,.[8]kD0.38±0.03mg/L.kN0.2~2.46mg/L[1],kN,/.rN,maxrD,max,RN,max051015200.00.51.01.52.02.5mg/L%54.6722.4711.2411.240102030405060700.482.401.501.02mg/L(mg/L)5415RD,max,.Eckenfelder[9]RN,max1.04mgNH4N/mg/d..OhJeillRD,max0.0214mgNOXN/(mgMLVSS⋅h)[8];MLVSS1340mg/L,rD,max28.7mg/(L⋅h);Metcalf[10]RD,max0.00125~0.0046mgNOXN/(mgMLVSS⋅h);Kujawa[11]RD,max0.002~0.004mgNOXN/(mgMLVSS⋅h).7750mg/L,RN,max=0.0022mgNH4N/(mgMLSS⋅h),RD,max=0.0008mgNOXN/(mgMLSS⋅h).RD,max.33.1,10%.3.2,.,0.14mg/L,/.3.3kN=0.37mg/L,kD=0.48mg/L.3.4,.[1].[M].:,1993.[2],,,.[J].,2001,17(5),2428.[3]RobertsonLA,DalsgaardT,RevsbechN,etal.Confirmationof‘aerobicdenitrification’inbatchcultures,usinggaschromato-graphyand15Nmassspectrometry[J].FEMSEcol.,1995,18:113120.[4],,,.A2/O[J].,2001,17(11):1316.[5]OtteS,GrobbenNG,RobertsonLA.NitrousoxideproductionbyAlcaligenesfaecalisundertransientanddynamicaerobicandanaerobicconditions[J].Appl.Environ.Microbiol.,1996,62:24212426.[6]GuptaAB.Thiosphaerapantotropha:asulphurbacteriumcapableofsimultaneousheterotrophicnitrificationandaerobicdenitrification[J].EnzymeandMicrobialTechnology,1997,21:589595.[7]GradyCPL,GujerW,HenzeM,etal.Amodelforsingle-sludgewastewatertreatmentsystem[J].Wat.Sci.Tech.,1986,18:4761.[8]OhJeill,SilversteinJ.Oxygeninhibitionofactivatedsludgedenitrification[J].Wat.Res.,1999,33(8):19251937.[9]EckenfelderWW.Industrialwaterpollutioncontrol[M].NewYork:McGraw-Hill,1989.[10]MetcalfEddy.Wastewaterengineeringtreatment,disposal,andreuse[M].NewYork:McGraw-Hill,1991.[11]KujawaKatarzyna,KlapwijkBram.Amethodtoestimatedenitrificationpotentialforpredenitrificationsystemsusingnurbatchtest[J].WaterResearch,1999,33(10):22912300.(1959),,,,,.12.5,92..100,92.3,,4,,.20020903