、A2/O杨殿海1, 宋拥好1, 谭巧国1, 杨企星2(1.同济大学污染控制与资源化研究国家重点实验室,上海200092;2.可事托环保设备上海有限公司,上海200030) : 介绍了一种新型的脱氮除磷工艺及其运行情况。该工艺是对传统A2/O工艺的改进(可称为改良型A2/O工艺),它采用了后置反硝化系统以及厌氧池碳源分流技术和回流污泥预缺氧反硝化技术,以提高系统的脱氮除磷效果。研究结果表明:在进水COD≥300mg/L,TN为40.3mg/L,TP为3.82mg/L时,对TN、TP及COD的去除率分别可达70%、86%和88%;当COD300mg/L时,对TP的去除效果较差,但对TN和COD的去除率仍分别可达60%和85%;试验期间,污泥沉降性能良好。 :(863)(2005AA6010100122) : 改良型A2/O工艺; 脱氮除磷; 反硝化除磷:X703.1 :A :1000-4602(2006)23-0018-04ResearchonPhosphorusandNitrogenRemovalbyModifiedA2/OProcesswithLow-carbonandLow-energyConsumptionYANGDian-hai1, SONGYong-hao1, TANQiao-guo1, YANGQi-xing2(1.StateKeyLaboratoryofPollutionControlandResourceReuse,TongjiUniversity,Shanghai200092,China;2.CorstarEnvironmentEquipmentLimitedCorporation,Shanghai200030,China) Abstract: ThemodifiedA2/O(MAAO)processforphosphorusandnitrogenremovalisimprovedfromthetraditionalA2/Otechnology.Inordertoenhancephosphorusandnitrogenremoval,apostposi-tiondenitrifyingsystem,thedistributarytechnologyofcarbonsourcefromtheanaerobicphaseandpre-anoxicdenitrifyingtechnologyofrecycledsludgewereapplied.TheresultsdemonstratethatundertheconditionofinfluentCODof300mg/L,TNof40.3mg/L,andTPof3.82mg/L,theremovalratesofTN,TPandCODare70%,86%and88%,respectively.WhentheconcentrationofCODislessthan300mg/L,TPremovalbecomesineffective,buttheremovalofTNandCODstillreaches60%and85%respectively.Duringtheexperiment,thesedimentationofsludgeperformseffectively. Keywords: modifiedA2/Oprocess; phosphorusandnitrogenremoval; denitrifyingphosphor-usremoval (A2/O),[1],,,;,A2/O,(100%~400%),18第22卷 第23期2006年12月 中国给水排水CHINAWATERWASTEWATER Vo.l22No.23Dec.2006。,A2/O(MAAO),,(0.4Q)。1 试验材料与方法MAAO1。1 MAAOFig.1 FlowchartofMAAOprocess ,、、、,1.2、3.0、6.2、3.2、2.46.0L。2L/h,(HRT)8h。、、,,,。、,、3BT-300(,)。,2L/h,50%,0.4Q。MLSS3000mg/L,DO2~4mg/L,10~15d(),20~25℃,1mol/LpH7.0~8.5。,COD200~550mg/L,TN30~45mg/L,TP2.5~5.5mg/L。,2COD,。,SVI100mL/g,。COD、pH、DO、MLSS、NH+4-N、1。1 Tab.1 MeasuringmethodofwaterqualityindexCOD[2]pHpHDOMLSSNH+4-NNO-2-NN-(1-)-NO-3-NTNPO3-4-PTP2 运行数据及分析2.1 TP2(31)。2 Fig.2 TPremovaleffectbymodifiedA2/Oprocess 200631—410,TP(3.82±0.779)mg/L,TP(0.52±0.686)mg/L,86%。2,311032049,,TP90%,310320,,COD,,COD,。D.Mulkerrins[3],、(VFA)、(Mg2+、K+、Ca2+)、、、DO、、、、pH,,COD。,COD300mg/L,90%;COD,19第23期杨殿海,等:低碳源、低能耗型改良A2/O工艺的脱氮除磷研究第22卷,50%。3。3 Fig.3 Variationofphosphorusconcentrationinthesystem ,PHA,,,(NO-x-N),,;,。,,PHA(),[4、5]。,PHA,,。COD,PHA(PHA),,。,。,PHA,。NO-x-N,NO-x-N(0.01mg/L),,。,,0.35h。COD300mg/L,。,55%。Sa-toshiTsunedaAOASBR、A/OSBRA2/O、[6],44%、13%21%,。、(DPAO),MAAO。2.2 TN(40.3±5.38)mg/L,TN(12.0±3.52)mg/L,70.1%(4)。4 Fig.4 Nitrogenremovaleffectbythesystem (ON),80%。,ONNH+4-N;60%,NH+4-NNO-x-N,;40%,PHANO-x-N,,“”;NH+4-NNO-x-N。,TNNO-x-NNH+4-N;NO-3-N[(10.5±2.87)mg/L],TN88%。,,CODNO-x-N,COD,;NO-x-N(NO-x-N,),,。COD,,NO-x-N,NO-x-N,COD,[4、5、7]。20第23期 中国给水排水 第22卷:,NH+4-N95%,NH+4-N0.5mg/L,。,,。2.3 CODCOD(322±101.3)mg/L,COD(41±13.8)mg/L,88%。COD,COD(95%),,PHA[4、5]。COD,COD60mg/L,COD。CODTN、TP5。5 CODTN、TPFig.5 EffectofinfluentCODconcentrationonTNandTPremoval 5TN60%~80%,COD。:TNCOD,TP(2d,6HRT)COD,COD。3 结论① MAAO,,,。COD,COD(250mg/L),;COD300mg/L,、,70%86%,。② 55%,17.5%。,,。③ 12mg/L,0.5mg/L,1mg/L,COD60mg/L,。④ MAAO,。:[1] .A2/O[J].,2003,29(3):22-25.[2].(4)[M].:,2002.[3] MulkerrinsD,DobsonADW,ColleranE.Parametersaf-fectingbiologicalphosphateremovalfromwastewaters[J].EnvironInt,2004,30(2):120-125.[4] vanLoosdrechtMCM,KubaT,SmoldersG,etal.Bio-logicalphosphorusremovalunderdenitrifyingconditions[J].H2O,1992,19:526-530.[5] KubaT,SmoldersG,vanLoosdrechtMCM,etal.Bio-logicalphosphorusremovalfromwastewaterbyanaerobic-anoxicsequencingbatchreactor[J].WatersciTechn-ol,1993,27(5-6):241-252.[6] SatoshiTsuneda,TakashiOhno,KoichiSoejima,etal.Simultaneousnitrogenandphosphorusremovalusingdeni-trifyingphosphate-accumulatingorganismsinasequencingbatchreactor[J].BiochemEngJ,2006,21(3):191-196.[7] KubaT,vanLoosdrechtMCM,HeijnenJJ.PhosphorusandnitrogenremovalwithminimalCODrequirementbyintegrationofdenitrifyingdephosphatationandnitrificationinatwo-sludgesystem[J].WaterRes,1996,30(7):1702-1710.:(1965- ), , , , , 。:(021)65982684E-mail:yangdianhai@mai.ltongj.iedu.cn:2006-08-1621第23期杨殿海,等:低碳源、低能耗型改良A2/O工艺的脱氮除磷研究第22卷