DO对同步硝化反硝化影响及动力学徐伟锋

DO徐伟锋1,孙力平1,古建国2,郑先强2(1.天津城市建设学院　天津,300384;　2.天津市环境保护科学院　天津,300191)　　:DO。:(DO)1.0～3.0mg/L,,,DO2mg/L,;DO2mg/L。:;;;:O643.12　　:A　　:1002-1264(2003)01-0008-03EffectofDOonSimultaneousNitrificationandDenitrificationandKineticEquationXUWei-feng1,SUNLi-ping1,GUJian-guo2,ZHENGXian-qiang2(1.TianjinUrbanConstructionInstitute,Tianjin　300384,China;2.TianjinAcademyofEnvironmentProtection,Tianjin　300191,China)Abstract:Inthepaper,theeffectofDOconcentrationonthenitrogenremovalefficiencyisstudiedinbiofilmsimul-taneousnitrificationanddenitrification(SND).ResultsshowthattotalnitrogenremovalefficiencyhasatendencytorisewiththedecreaseofDOconcentrationbetween1.0and3.0mg/LinthereactorandtheoptimalDOconcentra-tionisabout2mg/L.Andthereasonisanalyzed.Inaddition,kineticequationisstudiedwhenDOis2mg/L.Keywords:simultaneousnitrificationanddenitrification(SND);biofilm;DOconcentration;kineticequation　　,。,,(SND),,、SBR、[1-2]。,SND,,,,SND。DOSND,DO,,SND[3]。SND,DO,,。1　1.1　1。,,13cm,10L。,、、、、。,15%。1　1.2　。、、、、、、、。1.3　:--(7h)--。,pH7.5～8.3。816120032URBANENVIRONMENT&URBANECOLOGYVol16,No.1Feb.　2003:(013608211)　:2002-10-11,DO,DO。2　2.1　DOSND,DOSND,SNDDO[4]。,,(),,SND。,,DO4mg/L[5]。DO1.0、2.03.0mg/L(±0.2mg/L)DOSND。3DO,COD、NH4+、NO2-、NO3-TN,7h5,1。1　3DODO(mg/L)CODcr(mg/L)(mg/L)ηCOD(%)NH4+(mg/L)(mg/L)ηNH+4(%)NO2-(mg/L)NO3-(mg/L)TN(mg/L)ηTN(%)1.0402.045.688.642.010.575.02.211.223.943.02.0400.020.694.842.48.280.00.59.418.157.03.0397.021.894.541.88.879.00.510.519.852.92.1.1DOCODNH4+-N23DO。2h,,。23,2h,,,。12、3,DO2mg/L,,DO3mg/L。2　DONH3　DOCOD2.1.2　DOTN,。4,2h,,TN;,TN。1,3DO,DO2mg/L。4　DOTN,,DOCOD,,DO2mg/L。1,DO,,DO,,。,DO、,,。2.2　DO2mg/L,7h8.2mg/L,57%。DO,:a.,;b.,;c.DO,,,,。DO3mg/L,DO,,,;,DO,9,　DO　　,,,。DO2mg/L,,,,,DO1mg/L,,,,,DO,,COD,TN。DO,,,。,DO,DO,,。3　,,,,。,,,K。Ramalho[6]:,;,。,COD、NH4--NTN,K2,5、67:5　CODK26　NH4+-NK27　TNK2　　,K2:0.015/d;0.0017/d;0.0014/d。,::Ce=Co·e-45.23t,:Ce=Co·e-5.13t,:Ce=Co·e-4.22t,,,,。4　4.1,DO,;DO2mg/L。4.2　,、,。,。4.3　:(COD):Ce=Co·e-45.23t;:Ce=Co·e-5.13t;:Ce=Co·e-4.22t。[1]　MasudaS,etal.Bio-filmpropertiesandsimultaneousnitrifica-tionanddenitrificationinaerobicrotatingbiologicalcontactor[J].WatSciTech.1991,23(2):1355-1363.[2]　ElisabethVMunch,etal.Simultaneousnitrificationanddenitrifi-cationinbench-scalesequencingbatchreactor[J].WatRes1996,30(2):277-284.[3]　,.MBRDO[J].,2001,17:10-14.[4]　Garrido,J.Metal.Nitrousoxideproductionbynitrifyingbiofilminabiofilmairliftsuspensionreactor[J].WatSciTech,1997,36(1):157-163.[5]　HelmerC.SimultaneousNitrification/Denitrificationinanaerobicbiofilmsystem[J].WatSciTech,1998,27(4-5):183-187.[6]　,.[M].:,1989.:(1978-),,,,,。10　　　161　2003