不同CN比和碳源种类条件下的SNAD生物膜脱氮性能郑照明

2017,37(4)1331~1338ChinaEnvironmentalScienceC/NSNAD,*,,,(,,100124)C/NSNAD.SNAD,,SNAD.,COD/NO2NSNAD.COD/NO2N,.COD/NO2N1234587.1%52.2%29.3%23.7%16.3%.COD/NO2N0~2,50%,SNAD.COD/NO2N5,SNAD.16.3%37.1%74.1%76.8%.COD/NO2N=5,SNAD.SNADX703.5A10006923(2017)04133108ThenitrogenremovalperformanceoftheSNADbiofilmwithdifferentC/Nratiosandcarbonsources.ZHENGZhao-ming,LIJun*,YANGJing-yue,MAJing,DUJia(NationalEngineeringLaboratoryforAdvancedMunicipalWastewaterTreatmentandReuseTechnology,EngineeringResearchCenterofBeijing,BeijingUniversityofTechnology,Beijing100124,China).ChinaEnvironmentalScience,2017,37(4)1331~1338AbstractTheeffectofcarbonsourcesandchemicaloxygendemand(COD)/NO2Nratiosontheanammox-denitrificationcouplingprocessofthesimultaneouspartialnitrification,anammoxanddenitrification(SNAD)biofilmwasstudiedinbatchtests.TheSNADbiofilmreactorwasfedwithdomesticwastewaterandfilledwithKaldnesrings.Duringthestablerunningperiod,goodSNADperformancewasachieved.TheeffectofCOD/NO2Nratiosontheanammox-denitrificationcouplingprocesswasstudiedwiththecarbonsourceofsodiumacetate.Consequently,theNO2NconsumptionviaanammoxwasfoundtobereducedwiththeincreaseofCOD/NO2Nratio.WiththeCOD/NO2Nratiosof1,2,3,4and5,thecorrespondingNO2Nconsumptionviaanammoxwere87.1%,52.2%,29.3%,23.7%and16.3%,respectively.WiththeCOD/NO2Nrangesof0to2,theNO2Nconsumptionviaanammoxwasabove50%,whichindicatedthatgoodnitrogenremovalperformancewasobtained.Besides,theeffectofcarbonsourcesontheanammox-denitrificationcouplingprocesswasstudiedwiththeCOD/NO2Nratioof5.Withthecarbonsourcesofsodiumformate,sodiumacetate,sodiumpropionateandglucose,thecorrespondingNO2Nconsumptionviaanammoxwere16.3%,37.1%,74.1%and76.8%,respectively.TheSNADbiofilmcouldoperategoodnitrogenremovalperformancewiththecarbonsourcesofsodiumpropionateorglucoseattheCOD/NO2Nratioof5.KeywordsSNADbiofilmcarbonsourceC/Nratiosnitrogenremovalperformance(SNAD),,[12].SNAD,[34]..,20160831(2015ZX07202013)*,,[e-mail]133237,.C/N2~4COD400mg/L,[56].SNADC/N1.2COD300mg/L[1,7].,SNADC/N[89].,C/NSNAD.,,C/NSNAD.,1mgNO3N2.86mgCOD.,1mgNO3N3.5~4.5mgCOD[10].,,[11].SNAD,,.[1214].,,[11,15].SNAD.SNAD,C/NSNAD.SNAD.11.1SNADSNAD1.,89.5L(2.07).SBR,,(K3,AnoxKaldnes,),34L,77.7L,81%.25mm,,4mm,1~2mm.,,(20cm),20cm,20mm.,500L/h,30.12345678910111SBRFig.1TheschematicdiagramofSBRreactor1;2;3;4;5SBR;6;7DO;8pH;9;10;11PLC1.2SNAD,:CODCr200~300mg/L;NH4+N60~80mg/L;NO2N1mg/L;NO3N1mg/L;TOC50~60mg/L;TN100~140mg/L;pH7.5~8.0;300~400mg/L.:(5min),(20min/20min),(20min),(10min),(10min),(1min).6.,,,,.5.6mg/L,10min0mg/L.4C/NSNAD1333,NH4+N,NO3N(TIN)2,7,11mg/L,TIN80%~90%,TIN0.22kgTIN/(m3·d).COD45mg/L,COD71%.SNAD.0.267kgTIN/(kgVSS·d)0.211kgNO2N/(kgVSS·d)0.053kgNO2N/(kgVSS·d).1.31000mL,50,3.SNAD,30.,NH4ClNaNO2.pH,pH7.0.1.3.1SNAD,SNAD,[16].[17].1.3.2COD/NO2N,COD/NO2NSNAD.NH4+NNO2N70mg/L,,COD/NO2N012345.:(1);(2),500r/min,10min(99.999%);(3),,30..10mg/L,(1).=2460(1L(1):mg/L;min;g.:,NH4+NNO2N10mg/L,NH4+NNO2N10mg/L;,NH4+NNO2N10mg/L,.kgN/(kgVSS·d).:,,,,,,,,50.1.3.3,SNAD.NO2N70mg/L,COD/NO2N5.0.,NH4+N0,70mg/L.1.3.2.1.4NH4+N:;NO2N:N(1);NO3N:;DO:WTW/Multi3420;CODCr:[18].varioTOCTNTOC.NH4+N,NO2NNO3NTIN.1.5NO2NCOD,COD(2)[19].28()7CODCODNO-NC:CODNO2Nmg/L.SNAD,SNAD:133437=×1.45;=.22.1SNAD2,NH4+NNO2N70mg/L,,NH4+NNO2N,.NO2N/NH4+N=1.45,NO3N/NH4+N=0.29,Strous[20].0.267kgTIN/(kgVSS·d).0306090120150180210240270020406080100120140NH4+-N(min)NO2--NNO3--N(mg/L)TIN2SNADFig.2AnammoxactivityoftheSNADbiofilm2.2COD/NO2NSNAD0.00.10.20.30.40.545321[kgN/(kgVSSd)]00.2420.3790.3580.0400.2810.0620.3920.0790.1010.1450.1800.121C/N3COD/NO2NSNADFig.3EffectofCOD/NO2NratiosonthenitrogenremovalrateoftheSNADbiofilm34,COD/NO2N0,SNAD,NH4+NNO2N,NO3N,NO3N13.6mg/L.COD/NO2N0,SNAD,NH4+NNO2N,NO3N2mg/L.COD/NO2N0123450.121,0.145,0.101,0.079,0.062,0.040kgN/(kgVSS·d);0.180,0.242,0.281,0.392,0.379,0.358kgN/(kgVSS·d).COD/NO2N,SNAD,,,.:,SNAD[2122],[23];,,COD/NO2N,,,.COD/NO2N1COD/NO2N0,:,,,,,.1COD/NO2NSNAD.COD/NO2N1234587.1%52.2%29.3%23.7%16.3%.COD/NO2N,.COD/NO2N0~2,4C/NSNAD133550%,,SNAD.COD/NO2N2,,SNAD.02040608010012014016018020022024026028030020406080aNH4+-N(mg/L)COD/NO2--N=0COD/NO2--N=1COD/NO2--N=2COD/NO2--N=3COD/NO2--N=5COD/NO2--N=4b0204060801001201401601802002202402602803000406080NO2--N(mg/L)COD/NO2--N=0COD/NO2--N=1COD/NO2--N=2COD/NO2--N=3COD/NO2--N=5COD/NO2--N=420c0204060801001201401601802002202402602803000101520NO3--N(mg/L)(min)COD/NO2--N=0COD/NO2--N=1COD/NO2--N=2COD/NO2--N=3COD/NO2--N=5COD/NO2--N=454COD/NO2NFig.4EvolutionofnitrogenconcentrationsviaanammoxdenitrificationcouplingprocessunderdifferentCOD/NO2NratiosC/N.Chamchoi[5],COD200~300mg/L(COD/NOXN2~3),,COD300mg/L(COD/NOXN3),,.,Tang[6],COD300mg/L(COD/NO2N1.25),,55.3%;COD700mg/L(COD/NO2N2.92),,2.1%,.Ni[24],COD400mg/L(COD/NO2N4),,.,CODC/NSNAD.Chen[1],COD100mg/L(COD/NH4+N0.5),SNAD70%;COD150mg/L(COD/NH4+N0.75),40%.Li[7]COD245~295mg/L(COD/NH4+N1.2),SNAD49.22%.,SNAD.,SNAD,,,.,SNAD,,[25].1336371C/NSNADTable1NitrogenbalanceinbatchtestsviaanammoxdenitrificationcouplingprocessunderdifferentCOD/NO2NratiosC/N(min)NH4+N(mgN)NO2N(mgN)NO2N(%)116034.056.649.37.387.