A2N工艺的固有弊端分析及其对策研究刘莹

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A2N,,(,100124)A2/O、UCT、CASS、,,、。、、,、、,[1]。,。A2N,,。A2N,,A2N。1A2N1.1A2N2080,,[2-3]。,[4-6]。Jones[7]“”,:A2N,A2N,,A2N,,,。:A2N;A2NSBR;;:X703.1:A:%1009-2455(2010)06-0001-05AstudyoninherentshortcomingsofA2NprocessandcountermeasuresthereofLIUYing,PENGYong-zhen,WANGShu-ying(KeyLaboratoryofBeijingforWaterQualityScienceandWaterEnvironmentRecoveryEngineering,BeijingUniversityofTechnology,Beijing100124,China)Abstract:TheA2Ntwo-sludgeprocessdevelopedbasedonthetheoryofdenitrifyingdephosphatationhasbecomearesearchhotspotinthefieldofwastewaterbiologicaltreatmentallovertheworld.ThedenitrifyingdephosphatationmechanismofA2Ntwo-sludgeprocessanditsdevelopmentwereintroducedbriefly;andthen,theinherentshortcomingsofthesaidprocesswereanalyzed.Inviewoftheexistingshortcomings,thecountermeasuresandtheimprovedprocesshavebeenpointedoutbyscholarsbothinChinaandabroad.Basedonthesummarizationandanalysisoftheresearchstatus,themainproblemsofthecurrentresearchwererevealedandthefutureresearchdirectionwasputforward.Keywords:A2Nprocess;A2NSBRprocess;denitrifyingdephosphatation;two-sludge:“”(2008ZX07317007105);(PXM2008014204050843):2010-11-01;:2010-11-30!!!!!!!!!!!!!!!!!!INDUSTRIALWATER&WASTEWATERVol.41No.6Dec.,2010·1·INDUSTRIALWATER&WASTEWATERVol.41No.6Dec.,20101A2NFig.1FlowofA2Nprocess2A2NSBRFig.2FlowofA2NSBRprocessA2-SBR()N-SBRA2-SBR()()N-SBRN-SBRA2-SBRNH3-N,PO43--P陴陴陴NOx--N,PO43--PSBR,,。Wanner,Dephanox,A2N[8],1。A2N(DPAOs)。A2N:DPB,(PHA)。,DPAOs,,。,DPAOs,。,,;DPAOsPHA,PHA。1.2A2NA2N,A2N(A2NSBR)[9]。A2NSBR2SBR:1/-SBR(A2-SBR)1-SBR(N-SBR),2。A2-SBRDPB/,,CODCr。N-SBR,,/SBR。,,A2-SBR(2),N-SBR(2),,A2-SBR(2),,A2NSBRSBR。2A2N,A2N“”、、[10-11],:,。2.1NH3-N。,NH3-N。NH3-NNO3--N;DPAOs,,NH3-N。NH3-N,,DPAOsNH3-N。DPAOs,,(),NH3-N,NH3-N,TNNH3-N,。2.2A2N、、、、,A2/O,A2N1,DPAOsNH3-N。SBR1,、、,A2NSBR,2SBR,SBR1SBR。A2N,,·2·,,:A2N3A2NFig.3FlowofmodifiedA2Nprocess,。A2N。2.3,NO3--N。NO3--N,,;,NO3--N,NO3--N,PHA。,,。3A2N3.1SRTA2NNH3-N,DPAOs,NH3-N。NH3-NDPAOsNH3-N,100%。Kuba[12]A2NSBR,DPAOsSRTDPAOsNH3-N,DPAOsSRT14d8d,NH3-N1%~2%,DPAOsNH3-NNH3-N。3.2A2N,()(SBR)。Kuba[12]A2-SBRA2NNH3-N。A2-SBR71%76%,NH3-N3%~4%,NH3-N10mg/L。,A2NSBRSVI(50mL/g),A2SBR。,SVI70~100mL/g,SBR。Zhou[13]A2NSBR,:①A2SBRDPAOs。,,SBR[14-15];。Zhou2min,75%。②N-SBR。NH3-N,243.3mg/L,,32mg[N]/(L·h),TN81%。。,,,,。A2N[16],,NH3-N,,26%~33%。3.3[17-18]A2N,,A2N,A2N3。UASB,3,DPAOsCODCrPHA,,。,A2N,SVI260mL/g,(Microthrixparvicella),,,SVI100mL/g。A2N,,,Sorm,A2N。,,,,。·3·INDUSTRIALWATER&WASTEWATERVol.41No.6Dec.,20104AN/AOFig.4FlowofparallelAN/AOprocess5Fig.5Flowofmodifiedtwo-sludgedenitrifyingdephosphatationprocessLiu[19]Xia[20]A2N,AN/AO,4。AN/AO:①DPAOsPAOs,,DPAOsPAOs,DPAOs,PAOs;②,,;③,A2N。:①,,,A2N;②,,;③,,。[21],5。A2N,,,A2N。NH3-N,,,,SS,。4A2N,,。A2N,,A2N“”、“”,,。,。A2N:(1),A2N,,,,。(2),、、,,,,,。(3)A2N,,,。,、,A2N、。:[1],.A2O[J].,2003,29(3):23-25.[2]HascoetM,FlorentzM.Influenceofnitratesonbiologicalphospho-rusremovalfromwastewater[J].WatSA,1985,11(1):1-8.[3]VlekkeG,ComeauY,OldhamW.Biologicalphosphateremovalfromwastewaterwithoxygenornitrateinsequencingbatchreactors[J].EnvironTechnolLett,1988,9:791-796.[4]KubaT,SmoldersG,VanLoosdrechtM.Biologicalphosphorusremovalfromwastewaterbyanaerobic-anoxicsequencingbatchreactor[J].WaterScienceandTechnology,1993,27(5-6):241-252.[5]AhnJ,DaidouT,TsunedaS.Characterizationofdenitrifyingphosphate-accumulatingorganismscultivatedunderdifferentelectronacceptorconditionsusingpolymerasechainreaction-denaturinggradientgelelectrophoresisassay[J].WaterResearch,2002,36(2):403-412.[6]ShojiT,SatohH,MinoT.Quantitativeestimationoftheroleofdenitrifyingphosphateaccumulatingorganismsinnutrientremoval[J].WaterScienceandTechnology,2003,47(11):23-29.[7]JonesW,SchroederE,WildererP.Denitrificationinabatchwastewatertreatmentsystemusingsequesteredorganicsubstances·4·,,:A2N[J].ResearchJournalWPCF,1990,62(3):259-267.[8]WannerJ,CechJ,KosM.Newprocessdesignforbiologicalnutrientremoval[J].WaterScienceandTechnology,1992,25(4-5):445-448.[9],.[J].,2003,29(8):33-35.[10]Lixiangkun,HuangRongixn,BaoLinlin,etal.Simultaneousphosphorusandnitrogenremovalinacontinuous-flowtwosludgesystem[J].JournalofEnvironmentalSciences,2006,18(1):52-57.[11]PengYZ,WangYY,OzakiMasuo,etal.Denitrifyingphos-phorusremovalinacontinuous-flowA2Ntwo-sludgeprocess[J].JournalofEnvironmentalScienceandHealthPartA-Toxic/HazardousSubstances&EnvironmentalEngineering,2004,39(3):703-715.[12]KubaT,VanLoosdrrchtM,HeijnenJ.PhosphorusandnitrogenremovalwithminimalCODrequirementbyintegrationofdenitrifyingdephosphatationandnitrificationinatwo-sludgesystem[J].WaterScienceandTechnology,1996,30(7):1702-1710.[13]ZhouY,PijuanM,YuanZG.Developmentofa2-sludge,3-stagesystemfornitrogenandphosphorousremovalfromnutrient-richwastewaterusinggranularsludgeandbiofilm[J].WaterResearch,2008,42(12):3207-3217.[14]DulekgurgenE,OvezS,ArtanN.Enhancedbiologicalphosphateremovalbygranularsludgeinasequencingbatchreactor[J].Bio-technologyLetters,2003,25(9):687-693.[15]LinYM,LiuY,TayJH.Developmentandcharacteristicsofphosphorusaccumulatingmicrobialgranulesinsequencingbatchreactors[J].AppliedMicrobiologyandBiotechnology,2003,62(4):430-435.[16]WangYY,PengYZ,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