3 3(186)20105 EnvironmentandEcologyintheThreeGorgesVol.3 No.3(Sum.No.186)May.2010DOOGO:2009-11-01:(50378095): (1984-),,,,。E-mail:fanyin112@163.com范 寅,罗固源,张 园(,400045) :OGO,(DO)(SND)。DO1.0mg/L、2.0mg/L3.8mg/L,OGO。,DO2.0mg/L,,,TNOGOTN48.89%,TN74.80%。 :OGO;DO;; :X703.1 :A :1674-2842(2010)03-0001-04EffectsofDOConcentrationonSimultaneousNitrificationandDenitrificationinOGOReactorSystemFANYin,LUOGu-yuan,ZHANGYuan(KeyLaboratoryofEco-environmentsinThreeGorgesReservoirRegion,MinistryofEducation,ChongqingUniversity,Chongqing400045,China)Abstract:TheOGOreactorwasusedtotreatdomesticwastewater.TheeffectofDOconcentrationonsimultaneousnitrificationanddenitrification(SND)inthemiddleofaerobicareawasinvestigated.DifferentDOconcentrationinthemiddleofaerobicareawasdesigned,thatwas1.0mg/L,2.0mg/Land3.8mg/L,tostudytheeffectoftheni-trogenremovalonsimultaneousnitrificationanddenitrificationinOGOreactorsystem.TheresultsshowedthattheoptimalDOconcentrationinthemiddleofaerobicareaisabout2.0mg/L.Atthislevel,obviousphenomenonofsimultaneousnitrificationanddenitrificationoccursinthesystem,theOGOsystemcanobtainfavorablenitrification-denitrification.TheproportionofSNDnitrogenremovalinthetotalnitrogenremovalisabout48.89%,andtheav-erageremovalefficiencyofTNinOGOsystemisover74.80%.Keywords:OGOreactor;DOconcentration;simultaneousnitrificationanddenitrification;biologicalnitrogenre-moval (SND)/,。,DO。OGO,DO(SND)。1 1.1 OGOOCO[1]。1。,145L,、()1∶3.2∶4.6,40cm。,DOI:10.14068/j.ceia.2010.03.002、、,;。:(HRT)10h,70%,(SRT)18~20d。22~28℃。1 OGO1.2 ,KH2PO4、NH4Cl、、、Na2CO3,,《》(4)[2]。OGO:COD250~450mg/L、TN31~43.5mg/L、NH3-N28~38mg/L、P3O4-P3.6~5.8mg/L、TP4~6mg/L。2 ,。TNNH3-N31.82~42.78mg/L27.95~39.75mg/L,TNNH3-N6.35~11.21mg/L0.97~2.26mg/L,TNNH3-N75.23%94.52%。2.1 OGO、(1),,OGO,。2。2:TNNH3-N,13.77mg/L18.79mg/L,5.02mg/L,。2 OGOTN、NH3-N、3 OGO ,DO,。3。1,TN、NH3-NDO。32,,,。,NH3-N。,,DO,(SND)[3]。,SND[4]。2.2 DOOGO,DO,,DO3,DO2。2 31 OGODO、TN、NH3-N、mg/L DOTNNH3-N/31.82~42.7829.75~39.750.15~0.2810.1~0.217.85~24.3616.73~22.780.87~1.65234567890.9~1.10.4~0.70.2~0.61.2~1.51.6~2.01.8~2.31.4~1.78.42~11.332.11~2.725.89~8.218.63~11.742.32~2.835.83~8.158.54~11.592.05~2.645.79~8.128.48~11.511.86~2.375.85~8.188.58~11.651.78~2.285.74~8.138.45~11.341.57~2.215.76~8.258.39~11.311.52~2.165.82~8.268.44~11.371.49~2.145.71~8.17/8.35~11.211.32~2.035.83~8.262 DODO/(mg·L-1)Ⅰ(1~15d)3.81.81.2Ⅱ(16~30d)2.00.50.3Ⅲ(31~45d)1.00.20.12.2.1 工况Ⅰ的试验结果ⅠDO,3。 3,NH3-N,0.21mg/L,TN,15.45mg/L16.85mg/L,,DO3.8mg/L,OGO,,TN;3,(SND/TN)40.48%,TN57.74%。3 Ⅰmg/LNH3-NTN30.64~39.3835.360.08~0.270.1834.48~45.6939.8718.12~23.7620.842.03~3.813.2920.68~29.8726.310.01~0.260.2211.27~17.4715.5812.52~18.8716.990.01~0.270.2111.23~17.4615.4512.38~18.8316.85 DO,:,DO1.2mg/L,,,;DO,[5]。2.2.2 工况Ⅱ的试验结果Ⅱ,4。4 Ⅱmg/LNH3-NTN31.28~37.8834.210.12~0.320.2235.53~43.8537.9319.67~23.6421.780.23~1.940.9321.92~26.9123.440.98~2.271.524.31~8.596.855.64~11.689.571.01~2.281.534.30~8.516.865.59~11.709.5633(186) ,:DOOGO 4,NH3-N1.53mg/L,TN6.86mg/L9.56mg/L,,DO1.8~2.0mg/L,OGO,TN74.80%;4,OGO,SND/TN48.89%。2.2.3 工况Ⅲ的试验效果Ⅲ,5。5 Ⅲmg/LNH3-NTN33.72~41.3637.420.42~1.180.6537.67~46.5141.3721.21~29.4326.460~0.280.1122.42~31.5029.446.96~12.479.512.98~7.235.2612.52~18.2616.247.05~12.539.523.24~7.375.3212.45~18.2416.23 5,NH3-N9.51mg/L,5.32mg/L,TN16.02mg/L,TN60.77%。TN57.98%,32.40%;Ⅰ、Ⅱ,TN,NH3-N。,1.0mg/L,。SND/TN51.17%,TN60.77%。3~5,DOTN(SND)4。4 DOOGOTN4,3~5d。TNSND/TNDO,。,DO2.0mg/L,TNSND/TN。,DOOGOTN。,ⅡDO,TN,。2.3 DOOGO 3~5,DO,。DO1.0mg/L,TN;DO2.0mg/L,;DO3.8mg/L,。,DO,。3 3.1 DO,(SND)。3.2 DO2.0mg/L,TN,74.80%,,TNTN48.89%。:[1] ,, ,.OGO[J].,2006,22(3):69-72.(7)4 3,1Ⅲ,3.9,X13。,,Ⅲ12,13.9Ⅳ,23.4,。V,1314。2 1Ⅲ3.9()2Ⅲ3.4()3Ⅴ5.9()4Ⅴ5.7(BOD5)5Ⅳ4.1(BOD5)6Ⅱ2.9(CODMn)7Ⅲ3.6()8Ⅳ4.8()9Ⅴ6.9()10Ⅲ3.6(CODMn)11Ⅳ4.2()12Ⅴ5.9()13Ⅴ6.4()14Ⅴ7.1()15Ⅲ3.7()151,200712X1.X2,X1.X2,(1)。,,1、24X1.X26,Ⅴ;,,ⅢⅣ。1 1-124 ,:,;,;;,,。,,。:[1] ,,.[J].,2008,20(7):98-101.[2] ,,,.[J].,2005,1(4):53-55.[3] .[J].,2009,2(1):24.[4] .[J].,2005,33(4):482-488.[5] GB3838-2002,[S].(4)[2] .[M].4.:,2006.[3] ,,,.OGO[J].(),2007,(6):125-128,136.[4] MENGQingjuan,YANGFenglin,LIULifen,etal.EffectsofCOD/NratioandDOconcentrationonsimultaneousnitrifi-cationanddenitrificationinanairliftinternalcirculationmem-branebioreactor[J].JournalofEnvironmentalSciences,2008,(20):933-939.[5] SenPriyali,DentelStevenK.Simultaneousnitrificationdeni-trificationinaFluidizedBedReactor[J].WaterSciTechnol,1998,38(1):247-254.73(186) ,:—