高氨氮PNA脱氮工艺亚硝态氮抑制后的恢复策略高远

37120191EnvironmentalEngineeringVol．37No．1Jan．2019PN/A*100124PN/A。PN/A。PN/AρNO－2－N=200mg/L2h。PN/ADO0.05～1mg/LNO－2－N50mg/LPN/ADODO。NO－2－NPN/ADO。PN/A200LNO－2－N160mg/LTN0.570.2kg/m3·d。DONO－2－N30d。PN/ADOI10.13205/j．hjgc．201901007HIGH-STＲENGTHAMMONOIUMPN/ANITＲOGENＲEMOVALPＲOCESSＲECOVEＲYSTＲATEGYAFTEＲINHIBITIONOFNITＲITENITＲOGENGAOYuanCHENGJunZHANGLiangPENGYong-zhenKeyLaboratoryofBeijingforWaterQualityScienceandWaterEnvironmentＲecoveryEngineeringNationalEngineeringLaboratoryforAdvancedMunicipalWastewaterTreatmentandＲeuseTechnologyBeijingUniversityofTechnologyBeijing100124ChinaAbstractThestabilityofpartialnitrificationandanammoxPN/Aprocessisseriouslyimpactedbynitritenitrogen．Inthisstudythestrategyforrapidrecoveryofsystematicnitrogenremovalperformancebyhigh-strengthammoniumPN/Aprocessafternitriteinhibitionwasinvestigated．AfterinhibitingPN/Asludgeofstableoperationfor2hunderρNO－2－N=200mg/LfirstlythechangeinanammoxactivityunderdifferentnitritenitrogenconcentrationsnitrogenremovalperformanceofPN/AprocessunderdifferentDOconcentration0.05～1mg/LafternitriteinhibitionwereinvestigatedandtheresultsshowedthatanammoxcouldshowsignificantactivityonlywhentheNO－2－Nconcentrationdecreasedtobelowerthan50mg/L．InadditionanammoxbacteriabecamemoresensitivetodissolvedoxygenduringthePN/AprocessafterinhibitionandforrecoveringtheconcentrationofDOshouldbelowerthanthatofnormaloperation．TosumuptorecoverthenitrogenremovalperformanceofPN/AprocessundernitriteinhibitionitwassuggestedtoreducethenitritenitrogenconcentrationandcontroltheDOconcentration．InaPN/Areactor200LofcontinuousoperationNO－2－Nconcentrationwasinducedtobeincreasedto160mg/Landthetotalnitrogenremovalratedecreasedfrom0.57to0.2kg/m3·d．ThroughreasonablycontrollingconcentrationsofDOandnitritenitrogenthesystemloadrecoveredtotheinitiallevelin30dwhichconfirmedthefeasibilityoftheaboverecoverystrategy．KeywordsnitriteaccumulationPN/Arecoverystrategies*51578014D171100001017002。2018－04－300－partialnitrification/AnammoxPN/A1。－、、2。PN/A3740%～50%3-4C/N。PN/A5PN/A6。780%PN/A8。PN/A。NO－2－N9-10。PN/ADavereyNO－2－N100mg/L11。NO－2－NLottiNO－2－N12KimuraNO－2－N3d13。PN/ANO－2－N50%NO－2－N8。NO－2－NPN/ANO－2－N。PN/ANO－2－N。11.1。PN/A1。1L。DO/pH。。。DO。1.21。。2。NaNO2NO－2－N250mg/LNaOHHCl1mol/L1—2—3—4—5—6—7—DO8—pH9—DO/pH10—11—12—13—14—。1SBＲFig．1SBＲreactorschematicpH7.02h。NO－2－N。2PN/ANO－2－NNO－2－NDO。NO－2－N。NO－2－N3SBＲNH4ClNaNO2。50mg/L20010050mg/LpH=728℃。SBＲ6h1h。2DO。4SBＲρNH+4－N50mg/L4ρDO0.050.20.51.0mg/LpH=728℃。1h。1.3NO－2－NPN/A。NO－2－N。1.40.45μm。NH+4－NNO－2－N631PN/AN-1-NO－3－N。、pH、DOWTW340iMLSS。22.1NO－2－NPN/ANO－2－NNO－2－N。21。ρNO－2－N200mg/LNO－2－N2.42mg/L·h0.04mg/L·h。ρNO－2－N100mg/LNO－2－N2.42mg/L·h4.9mg/L·h0.04mg/L·h1.63—■—NH+4－N—●—NO－2－N—☆—TN。2NO－2PN/AFig．2Variationsofnitrogencompoundsunderdifferentinitialnitriteconcentrationsafternitriteinhibition1NO－2－NNH+4－N、NO－2－NTNTable1AmmonianitriteandtotalnitrogenremovalratesatdifferentinitialnitriteconcentrationsSBＲ1SBＲ2SBＲ3/mg·L－1505050NO－2－N/mg·L－120010050/mg·L－1·h－10.041.634.13NO－2－N/mg·L－1·h－12.424.008.02Anammox/mg·L－1·h－10.093.789.58/mg·L－1·h－12.331.852.75mg/L·hNO－2－N50mg/L4.13mg/L·hNO－2－N8.02mg/L·h。Anammox14Anammox1—2K=2.32×ΔNH+4Δt1K=ΔNH+4Δt+ΔNO－2Δt－K2ΔNH+4tmg/LΔNO－2。NO－2－N200mg/L50mg/LFNA0.04mg/L0.01mg/L0.099.58mg/L·h2.332.75mg/L·h。ρNO－2－N200mg/L。ρNO－2－N50mg/L。NO－2－NNO－2－N。NO－2－NNO－2－N。Daverey100mg/LNO－2－NNO－2－N11。PN/ANO－2－NNO－2－N50mg/L。NO－2－N。73372.2DOPN/ANO－2－NPN/ADO3、2。ρDO0.05mg/LAOB2.421.83mg/L·h4.57mg/L·h。0.2mg/LAOB4.59mg/L·h0.41mg/L·hTN2.31mg/L·h。NO－2－N25mg/L。ρDO0.51.0mg/LNO－2－N。。DO。ρDO0.05mg/LAOBTN4。DODO。3DODONOB。NOBAOBDO15DO。TN19.58mg/L·hDO0.25mg/L。2NO－2－NρDO0.05mg/LTN4.57mg/L·h77%NO－2－N。ρDO0.2mg/LDOTNNO－2－NDODO。DODO。DO。—■—NH+4－N—●—NO－2－N—△—NO－3－N—☆—TN。3NO－2PN/ADOFig．3Thevariationsofnitrogencompoundsunderdifferentdissolvedoxygenafternitriteinhibition16-19。Dapena-Mora831PN/A2DONH+4－NTNTable2AmmoniaandtotalnitrogendegradationratesunderdifferentdissolvedoxygenconcentrationsρDO/mg·L－1NH+4－N/mg·L－1·h－1AOBAnammoxTN/mg·L－1·h－1aDO=0.052.421.834.57bDO=0.204.590.412.31cDO=0.505.540.051.76dDO=1.006.6100.29NO－2－N20NO－2－N。NO－2－N21。DO。2.3NO－2－NPN/APN/A20d21～47dρDO0.25±0.05mg/LTN0.57kg/m3·dTN83.84%ρNO－2－N12.9mg/L。448NO－2－N49d4TNNO－2－NFig．4Variationsoftotalnitrogenremovalloadandeffluentnitrite160mg/L。TN0.2kg/m3·d65%。52～82d。ρNO－2－N50mg/L50L/minρDO0.1mg/LDONO－2－N。。30d150L/min。NO－2－NDOPN/A。31NO－2－N。ρNO－2－N200mg/L0.09mg/L·hρNO－2－N50mg/L9.58mg/L·h。2NO－2－NDOPN/A。NO－2－NDOρNO－2－N＜50mg/LDO。3PN/ANO－2－N3dPN/A65%NO－2－NDOPN/A30d。1AliMChaiLYTangCJetal．TheincreasinginterestofANAMMOXresearchinChinabacteriaprocessdevelopmentandapplicationJ．BiomedＲesearchInternational20136134-914．2LiangZLiuJ．LandfillleachatetreatmentwithanovelprocessanaerobicammoniumoxidationAnammoxcombinedwithsoilinfiltrationsystemJ．JournalofHazardousMaterials20081511202-12．3GaoFZhangHYangFetal．StudyofaninnovativeanaerobicA/oxicO/anaerobicAbioreactorbasedondenitrification-anammoxtechnologytreatinglowC/NmunicipalsewageJ．ChemicalEngineeringJournal20132321065-73．4MoralesNValDelＲioAVazquez-PadinJＲetal．IntegrationoftheAnammoxprocesstotherejectionwaterandmainst