氨氮负荷波动对城市污水短程硝化厌氧氨氧化工艺硝态氮的影响程军

2017,37(2)520~525ChinaEnvironmentalScience1,1,2,3,2,1*(1.,,,1001242.,,1000223.,150090)(NOB)(partialnitrification/anammox,PN/A).SBRPN/A.:,,PN/A,.,,.:,NOB.,PN/A,.(PN/A)DONOBX703A10006923(2017)02052006Theeffectsofammoniumloadingratefluctuationonnitrateaccumulationinmunicipalwastewaterpartialnitritation/anammox(PN/A)process.CHENGJun1,ZHANGLiang1,ZHANGShu-jun2,YANGYan-dong3,GUPeng-chao2,PENGYong-zhen1*(1.NationalEngineeringLaboratoryforAdvancedMunicipalWastewaterTreatmentandReuseTechnology,EngineeringResearchCenterofBeijing,BeijingUniversityofTechnology,Beijing100124,China2.ResearchandDevelopmentCenterofBeijingDrainageGroupCorporation,BeijingWastewaterRecyclingEngineeringTechnologyResearchCenter,Beijing100022,China3.HarbinInstituteofTechnology,Harbin150090,China).ChinaEnvironmentalscience,2017,37(2)520~525AbstractTheover-proliferationofnitrite-oxidizingbacteria(NOB)isoneofthemaincausesforthedecreaseofthenitrogenremovalefficiencyinmunicipalwastewaterpartialnitritation/anammox(PN/A)process.MunicipalwastewaterPN/Awasestablishedinasequencingbatchreactors(SBR)andtheeffectofperiodicnitrogenloadingrate(NLR)fluctuationonnitrateaccumulationinthePN/Aprocesswasinvestigated.Duringtheexperimentalperiod,influentammoniumconcentrationvariedperiodicallywhileaerationrateanddurationremainedconstant,inducingavariationofNLRwithintherangeof0.24~0.48kgN/(m3·d).EffluentnitrateconcentrationgraduallyincreasedunderthevariationofNLR,resultinginthedeclineofbothnitrogenremovalrateandefficiency.FollowedbythevariationofNLR,thereactorwasoperatedatastableNLR,whichwasfailedtorestorethenitrogenremovalperformance.NOBwaseasiertocompeteforoxygenatlowbulkammoniumconcentrations,whichwasthemainreasonfortheunwantednitrateaccumulation.Therefore,astricterprocesscontrolofDOandresidualammoniumconcentrationwasessentialtothestableoperationofPN/Asystems.KeywordsNLRfluctuationpartialnitritation/anammox(PN/A)DONOB(PN/A)[12].:(AOB)(NH4+N)(NO2N),,(Anammox),[3].,[4].,20160628(51478013),*,,[e-mail]2521NH4+NNO2N,.,40%~50%[56];,,[7];,,[89].,[10][1112][1314][15].,PN/ANOB.NOBPN/A[16].[17],,,.,PN/A,.,.SBR,,,,.11.12SBR(1).,20cm,40cm,12L.;,;,.[18],,0.8kgN/(m3·d),269μm,(200μm)41%.4,3354,3510mg/L.123654781SBRFig.1SchematicdiagramoftheSBRreactor1.pH,DO,;2.;3.;4.;5.;6.;7.;8.1.2,,.,NH4HCO3.(mg/L):COD:8.7~16.0;NH4+N:18.6~92.5;NO2N:0.0~2.2;NO3N:0.0~6.3.pH:7.2~8.1.3,1.:.,80mg/L40mg/L,4h2h,62;:.40mg/L,SBR1SBR230,20mg/L,81;:40mg/L,,42.,.:10min,120min,25min,10min,3.,0.06~0.28mg/L,261,NaHCO3pH6.8.522371Table1InfluentammoniumconcentrationandNLRpresentedineachphaseNLRNLRNLRSBR180~400.4840300.480.32400.48SBR280~400.4840200.480.24400.48:NH4+N:mg/L;NLR:kgN/(m3·d).1.3pHDO(WTW340i,Germany),.:NH4+N;NO2NN(1);NO3N.;(OUR)(StrathkelvinInstruments,UK).22.12.1.1SBR1SBR223.NH4+N80~90mg/L,NH4+N10mg/L,NO3N10mg/L,0.1.15NH4+N40mg/L.NH4+N10mg/L,NO2N1mg/L,NO3N,0.1,0.24kgN/(m3·d),62.,.020406080100120140160180010203040508090100(mg/L)2SBR1Fig.2ThevariationofNcompoundsconcentrationinSBR1020406080100120140160180010203040508090100(mg/L)3SBR2Fig.3ThevariationofNcompoundsconcentrationinSBR225232.1.223SBR1SBR2.,,,.NH4+N0~10mg/L,NO2N1mg/L.4,ΔNO3/ΔNH4+,0.8,,.,SBR1SBR2,0.24kgN/(m3·d)0.1,0.03kgN/(m3·d),80%42%21%.62138171SBR1SBR2AOBNOB,2.2,,2AOB,NOB..:,NOB.0204060801001201401601800.00.20.40.60.81.0NO3-/NH4+SBR1SBR24(ΔNO3/ΔNH4+)Fig.4Variationoftheratiobetweennitrateproducedandammoniumconverted(ΔNO3/ΔNH4+)2Table2VariationoftheoxygenuptakerateforactivatedsludgeSBR1SBR2AOBNOBAOBNOB6241.489.0351.438.7313826.2611.4034.9022.8717114.4118.8426.6426.17:mgO/(L·h).2.20246810120.00.20.40.60.80246810120.00.20.40.60.81.0NO3-/NH4+(mg/L)(a)SBR1y=0.3-0.032x+0.0016x2y=0.5-0.028x+3.68x210-4(mg/L)(b)SBR25Fig.5Thecorrelationbetweeneffluentammoniumconcentrationandnitrateproductionratio2.2.15,,.SBR1,3.86mg/LΔNO3/ΔNH4+0.2;SBR2,7.98mg/LΔNO3/ΔNH4+0.3.,.(3)NOB52437,.3Table3Achievingshortcutnitrificationbycontrollingresidueammonium(mg/L)1CSTR2.9~11.7[12]2SBR5~25[19]3MBBR2[20]4MBBR6~8[21]510~32[14]2.2.2NOB6(118)pH.,,NO2N0.7mg/L.0.03~0.38mg/L,,,NO3N.NOB.02040608010012004812162024(mg/L)(min)01234567DODO(mg/L)6.06.36.66.97.27.57.8pHpH6DOpHFig.6NcompoundsconcentrationandDOpHvariationinonecycle,10mg/L,,NOB,.,,,,NOB.Regmi[12]-,NOB;Perez[22]:NOB,NOB.NOB[23].(92112129),NOB,.,NOB[24].2.323,NH4+N40mg/L,.,NH4+N1220mg/L,.,.120.4,13,0.7.SBR1SBR20.05kgN/(m3·d)20%,.,NOB,NO2O2,.,,,[12],[20],,NOB..33.1;3.2,NOB,PN/A;3.3,2525,;3.4,,,NOB.[1]AliM,ChaiLY,TangCJ,etal.TheincreasinginterestofANAMMOXresearchinChina:bacteria,processdevelopment,andapplication[J].BiomedResearchInternational,2013,10:11551176.[2]OwusuAgyemanI,MalovanyyA,PlazaE.Preconcentrationofammoniumtoenhancetreatmentofwastewaterusingthepartialnitritation/anammoxprocess[J].EnvironmentalTechnology,2015,36(10):12561264.[3]JettenMSM,StrousM,vandePasSchoonenKT,etal.Theanaerobicoxidationofammonium[J].FemsMicrobiologyReviews,1998,22(5):421437.[4]LacknerS,GilbertEM,VlaeminckSE,eral.Fullscalepartialnitritation/anammoxexperiencesanapplicationsurvey[J].WaterResearch,2014,55:292303.[5]GaoF,ZhangHM,YangFL,eta