城市污水连续流半亚硝化实现维持机理与工艺创新研究易鹏

30820108　　　　　　ActaScientiaeCircumstantiaeVol.30,No.8Aug.,2010:“”(No.2006BAC19B01);(No.D07050601500000);(No.PXM2008-014204-050843)Supportedbythe“EleventhFive-Year”KeyProjectFinancedbyNationalScienceandTechnologySupportProgram(No.2006BAC19B01),theBeijingScienceandTechnologyPlanProject(No.D07050601500000)andtheScienceandTechnologyInnovationPlatformProjectFinancedbyBeijingMunicipalEducationCommission(No.PXM2008-014204-050843):(1985—),,E-mail:[e-mail];＊(),E-mail:[e-mail]:YIPeng(1985—),male,E-mail:[e-mail];＊Correspondingauthor,E-mail:[e-mail],,,.2010.[J].,30(8):1608-1614YiP,ZhangSJ,MengCL,etal.2010.Mechanismofpartialnitrificationandprocessinnovationinacontinuousflowprocesstreatingmunicipalwastewater[J].ActaScientiaeCircumstantiae,30(8):1608-1614易鹏1,张树军1,2,孟春霖2,甘一萍2,彭永臻1,＊,曹相生11.北京工业大学水质科学与水环境恢复工程北京市重点实验室,北京1001242.北京城市排水集团有限责任公司,北京100022:2009-12-07　　　:2010-01-08　　　:2010-04-15:(20～29℃)(DO0.2mg·L-1),A/O,,,.,、(MLSS)/.,,85%,96%.DO,,SVI70～110mL·g-1.NO-2-N/NH+4-N1.0,(ANAMMOX).,(TN)50%,,-.:;;;;:0253-2468(2010)08-1608-07　　　:X703.1　　　:AMechanismofpartialnitrificationandprocessinnovationinacontinuousflowprocesstreatingmunicipalwastewaterYIPeng1,ZHANGShujun1,2,MENGChunlin2,GANYiping2,PENGYongzhen1,＊,CAOXiangsheng11.KeyLaboratoryofBeijingforWaterQualityScienceandWaterEnvironmentalRecoveryEngineering,BeijingUniversityofTechnology,Beijing1001242.BeijingDrainageGroupCo.Ltd.,Beijing100022Received7December2009;　　　receivedinrevisedform8January2010;　　　accepted15April2010Abstract:TheeffluentofanAnaerobic/Oxic(A/O)processremovingphosphorusfrommunicipalwastewaterwasusedasinfluenttoapartialnitrificationprocess.Undertheconditionsofnormaltemperature(20～29℃)andlimitedoxygen(DO0.2mg·L-1),themechanismofnitrificationandthefactorsallowingpartialnitrificationtobemaintainedinacontinuousflowprocesswhiletreatingmunicipalwastewaterwereinvestigated.Anewoperationmodeofpartialnitrificationwasalsodeveloped.Theexperimentalresultsshowthatthecharacteristicsoftheinoculatedsludge,sludgeconcentrationandaerobic/anoxicalternatingoperationwerethekeyfactorsinfluencingmaintenanceofpartialnitrificationofmunicipalwastewater.Asthesludgereturnratioincreased,thenitriteaccumulationrateincreasedaccordingly,withanitriteaccumulationrateof85%andthehighestvalueof96%.GoodsludgesettlementpropertiesweremaintainedwithSVIvaluesof70～110mL·g-1underlowDOconditions.AverageeffluentNO-2-N/NH+4-Nofthepartialnitrificationprocesswasabout1.0,whichcouldproducesuitableinfluentfortheanaerobicammoniumoxidation(ANAMMOX)reactor.Duringthelatterperiodoftheexperiment,totalnitrogen(TN)removalefficiencywasabout50%intheaerobicreactor,andthebatchexperimentsverifiedthatANAMMOXhadtakenplaceinthereactor.Theaboveresultscanprovidehelpfulbackgroundfordevelopingautotrophicnitrogenremovalfrommunicipalwastewaterinasinglereactor.Keywords:municipalwastewater;partialnitrification;limitedoxygencondition;nitriteaccumulationrate;ANAMMOXDOI:10.13671/j.hjkxxb.2010.08.0118:1　(Introduction)C/N,,,,(CO2),.,ANAMMOX.ANAMMOX,,.Mulde(1997)1995.ANAMMOX,,40%,,.(NO-2)ANAMMOX,,ANAMMOX.25%、40%、50%(Ciudadaetal.,2005).50%,,,.(,2004;,2009),:、(DO)、pH、(FA)、(FH)、、、.,.SHARON(Hellingaetal.,1998).,,(Jung-HoonKimetal.,2008;TakehikoShinoharaetal.,2009).,,(2008)SBR,(2009),SBR.SBR,,.A/O,,,,,.2　(Materialsandmethods)2.1　试验装置(1),.35L,28L,7(),4cm,15%.,,.,.(A=18cm2,200r·min-1),,,.,15L.,144L·d-1,(HRT)4.6h,.2.1　Fig.1　Diagramofthepartial-nitrosoficationreactor2　Fig.2　Diagramofthebatchexperiments1609　　　　　　　　　　302.2　试验原水A/O(/),1.COD51.6mg·L-1,COD,,.1　Table1　ThecharacteristicsoftherawwastewaterpHCOD/(mg·L-1)TN/(mg·L-1)NH+4-N/(mg·L-1)NO-2-N/(mg·L-1)NO-3-N/(mg·L-1)TP/(mg·L-1)7.5～8.023.4～92.845.6～60.743.0～54.70～0.10.1～1.40.12～0.827.751.651.449.30.050.70.352.3　反应器的启动与运行,,()().15L,5L.MLSS12000mg·L-1.120d.,MLSS4000mg·L-1,SV30SVI35%85mL·g-1.DO0.2mg·L-1,HRT,.78.9%,,,.DO,(25%、50%、75%100%).2.4　分析项目与方法COD;;N-(1-)-;;pHpH(WTW);DODO(WTW);(CaCO3);MLSS(,2002).N2(Agilent/6890N),PorapakT(6ft×2mm),,30mL·min-1,、70,100100℃.NO-2-N/(NO-2-N+NO-3-N).3　(Resultsandanalysis)3.1　半亚硝化控制影响因素与稳定维持机理分析3.1.1　进出水三氮变化关系　3,50mg·L-1,1mg·L-1,.,1.0.65d,,,,1.0.,20mg·L-110mg·L-1,(ANAMMOX),.5mg·L-11mg·L-1,,/,(NOB)(AOB)O2,.3　Fig.3　NH+4-N,NO-2-NandNO-3-Nconcentrationsinthereactorovertime3.1.2　稳态运行时的氮素变化规律分析　60d,,27.4℃,pH7.62,42mg·L-1.45.,,、29.4mg·L-1、10.9mg·L-11.2mg·L-1,90%.,,16108:,,.,pH,6.26,7.14,ANAMMOX()().,、14.2mg·L-1、22.9mg·L-12.2mg·L-1,91.4%,NO-2-N/NH+4-N1.61.HRT,NO-2-N/NH+4-N1.0,ANAMMOX.、,(DO≤0.05mg·L-1)ANAMMOX,,pH.4　Fig.4　Parametervariationsintheflowpathwayduringthestableoperationperiod5　Fig.5　Parametervariationsintheflowpathwayduringthestableoperationperiod3.1.3　低DO的控制及影响　(,,,/)DO,,.DONOB.,(FA),DOAOB.1～10mg·L-1FANOB,AOB(SeongjunParketal.,2009),,FA0.5mg·L-1,FA.Hanaki(1990),DOAOB,,,NOB,.,/,,,AOBNOB.(DO0.5～1.0mg·L-1),,(15%.),,,,(DO0.2mg·L-1),NOBAOBDO,.,NOB,.DO,,/.,NOB,.,AOB(YAOB),,(μm).,NOB,μm,(Limetal.,2007;Lietal.,2008;,2009)./,,.3.1.4　不同回流比对半亚硝化的影响关系　4,1,4(25%、50%、75%100%),25%100%.6,4,.75%,1611　　　　　　　　　　30,91.2%,96.3%;25%,,78.8%,73.6%.7,()