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潘 登,刘 军,王 斌,汪 苹(北京工商大学化学与环境工程学院,北京 100037) :SBR,。,,、。:;;;:X703 :A :1002-1264(2003)06-0018-03UnconventionalPathwaysofNitrogenRemovalinWasteWaterTreatmentPANDeng,LIUJun,WANGBin,WANGPing(SchoolofChemicalandEnvironmentalEngineering,BeijingTechnologyandBusinessUniversity,Beijing 100037,China)Abstract:TheSBRexperimentalresultprovestheexistenceofdenitrificationpathwaysdifferfromtraditionalnitrifi-cationanddenitrification.Combiningwiththenewprogressesinresearchofbiologicalnitrogenremoval,thenecessityandimportanceoftheresearchaboutunconventionalpathwaysofnitrogenremovalareemphasized.Itisnecessarytodefinenitrification,denitrificationanddifferentprocessesofnitrogenremoval.Keywords:unconventionalpathwaysofnitrogenremoval; nitrification; denitrification; intermediate NO3-,N2。,50[1]。,NO、N2O[2～4],N2O,()。,,,。。1 1.1 NH3NH4+NO2-NO3-。[5]。,NH3NH4+NO2-,,Nitrosomonaseuropaea;NO2-NO3-,[6,7]。1.2 NO3-N2。,O2,,Pseudomonas,Bacillus,Thiobacillus,[8]。1.3 ,,NH4+NO2-。NH4+NO2-,N2ON2[3]。[9]。1.4 2080,,PseudomonasSp.、Al-caligenesfaecalis、ThiospaeraPantotropha[10],,18166200312URBANENVIRONMENT&URBANECOLOGYVol16,No.6Dec. 2003:(00KJ-044) :2003-07-14,,,,,。2 2.1 SBR4L,10.5h,:※(3h)※(8h)※(1.5h)※(1h)※,2L2L,2.5～3.0mg/L。CODCr720mg/L,NH4+-N110mg/L,。1h。,。1,11、2。1 mg/L(h)NH4+-NNO2--NNO3--NNOX--NCODCrTN054.50.195.25.4358.359.9154.30.062.12.16170.556.5254.60.020.050.075154.7335.22.28.911.13246.34213.311.314.62235.656.96.31622.31429.261.23.518.922.41023.670.52.116.718.81219.380.11.814.716.51316.610.50.050.38.28.5208.5:MLSS=3368mg/L。1 2 2.2 3:1.;2.,;3.。(1),,。(2)Ⅰ:CODCr51-13=38mg/L,,CODCr:N=100:5,38×5/100=1.9mg/L。Ⅱ:MLSS=3368mg/L,4L,145.7mg,/MLVSS/MLSS=0.75,C5H7O2N,13.5mg,3.38mg/L。Ⅱ,23.5h,,3.38mg/L,Ⅰ。(3),3～8h:6h,NH4+-N(1.2mg/L),。6～8hNOX--N,(22.4-16.5)/2=2.95mg/(L·h)。6hNOX-—N(2),6～8h2～6h。2～8h,2.95×6=17.7mg/L,54.7-16.6=38.1mg/L46.5%。,38.1-17.7-1.9=18.5mg/L,(38.1mg/L)48.6%。,48.6%,。19 , 3 ,。,。N2O,N2ON2O,,N2O[11]。,N2O。,RobertsonTiedjeWebsterHopkins,[3,11]。N2O,N2O,N2O15N,14N18O,16ON2ON2O[3]。[12]。[9]N2,N2,,N2(Poth,1986,NitrosomonaseuropaeaATCC19718N2)。,,NH2OH,pH[13]。N2O,NO[13]。,NON2O。,,3。3 NON2ONH2OH,(、、pH)、、,。[1] Allison,F.E..Theenigmaofsoilnitrogenbalancesheets[J].Ad-vancesinAgronomy,1995,7:213-250.[2] Poth,M.,Focht,D.D..[15]NkineticanalysisofN2OproductionbyNitrosomonaseuropaea:anexaminationofnitrifierdenitrification[J].Applied&EnvironmentalMicrobiology,1985,49:1134-1141.[3] Webster.E.A.,Hopkins.D.W..Contributionsfromdifferentmi-crobialprocesstoN2Oemissionfromsoilunderdifferentmoistureregimes[J].Biology&Fertilityofsoils,1996,22:331-335.[4] Verstraete,W.,Philips,s..Nitrification-denitrificationprocessandtechnologiesinnewcontexts[J].EnvironmentalPollution,1998,102:717-726.[5] Laanbroek,H.J.,Bodelier,P.L.E.andGerards,S..Oxygencon-sumptionkineticsofNitrosomonaseuropaeaandNitrobacterham-burgensisgrowninmixedcontinuousculturesatdifferentoxygenconcentrations[J].Arch.Microbiol,1994,161:156-162.[6] Macdonald,R.McL..Nitrificationinsoil:anintroductoryhistory.In:Prosser,J.I.(ED.),Nitrificat--ion[J].specialpublicationsoftheSocietyforGeneralMicrobiology,1986,20:1-16.[7] Klemedtsson.,etal..Autotrophicammonium-oxidisingbacteriainaSwedishmorhumus[J].SoilBiology&Biochenistry,1999,31:839-847.[8] Firestone,M.K.,Davidson,E.A..Biologicaldenitrification.In:Stevenson,F.J.(ED.),Nitrogeninagriculturalsoils[J].Agrono-my,1989,22:289-326.[9] Kuai,L.,Verstraete,W..Ammoniumremovalbytheoxygen-lim-itedautotrophicnitrificationdenitrificationsystem[J].Applied&EnvironmentalMicrobiology,1998,64:4500-4506.[10] Mulder,A.,vandeGraaf,A.A.,Robertson,L.A.andKuenen,J.G..Anaerobicammoniumoxidationdiscoveredinadenitrifyingfluidizedbedreactor[J].FEMSMicrobiologyEcol.,1995,(16):177-184.[11] VanLoosdrecht,M.C.M.,JettenM.S.M..Microbiologicalcon-versionsinnitrogenremoval[J].WaterScienceandTechnology,1998,38(1):1-7.[12] Schmidt,H.L.,Voerkelius,S..Originandisotopeeffectsofoxy-genincompoundsofnitrogencycle.IsotopesinNature[C].5thWorkingMeeting,Proceeding,Leipzig,1989.[13] VanCleemputO.,Baert,L..Nitrite:akeycompoundinNlossprocessesunderacidconditions[J].PlantandSoil,1984,76:233-241.:(1979-),,,,。20 166 2003