处理实际生活污水短程硝化好氧颗粒污泥的快速培养高景峰

2710200710　　　　　　ActaScientiaeCircumstantiaeVo.l27,No.10Oc.t,2007:(No.50508001);(No.KM200510005020);A(No.2006A10)SupportedbytheNationalNaturalScienceFoundationofChina(No.50508001),ScientificResearchCommonProgramofBeijingMunicipalCommissionofEducation(No.KM200510005020)andBeijingNovaProgramme(No.2006A10):(1974—),,();*(),E-mail:[e-mail]:GAOJingfeng(1974—),male,associateprofessor(Ph.D.);*Correspondingauthor,E-mail:[e-mail],,.2007.[J].,27(10):1604-1611GaoJF,ZhouJQ,PengYZ.2007.Rapidcultivationofaerobicgranularsludgeforshortcutnitrificationofdomesticwastewater[J].ActaScientiaeCircumstantiae,27(10):1604-1611高景峰*,周建强,彭永臻北京工业大学环境与能源工程学院,北京100022:2006-10-11　　　:2007-04-09　　　:2007-07-20:(SequencingBatchReactor,SBR)(SequencingBatchAirliftReactor,SBAR)COD/TN,(AerobicGranularSludge,AGS).,15min,SBRSBAR,5min、8min17d16d,AGS,AGS;,NO-2/(NO-2+NO-3)98.7%85.6%.,AGS.AGS,,.DO,pH、、、.,NH+4-N2.62.4.:;;;;:0253-2468(2007)10-1604-08　　　:X703.1　　　:ARapidcultivationofaerobicgranularsludgeforshortcutnitrificationofdomesticwastewaterGAOJingfeng*,ZHOUJianqiang,PENGYongzhenCollegeofEnvironmentalandEnergyEngineering,BeijingUniversityofTechnology,Beijing100022Received11October2006;　　　receivedinrevisedform9April2007;　　　accepted20July2007Abstract:Inordertoinvestigatetheeffectsofsettlingtimeandreactortypeonaerobicgranulationofnitrifyingbacteria,lowCOD/TNratiodomesticwastewaterwastreatedinasequencingbatchreactor(SBR)andasequencingbatchairliftreactor(SBAR).Whenthesettlingtimewas15mininboththeSBRandSBAR,thetypeofnitrificationwascompletenitrification.Whenthesettlingtimewasdecreasedfrom15minto5minintheSBR,aerobicgranularsludgeappearedandcoexistedwiththefloc-likesludgeafter17days.Thesamephenomenaoccurredafter16daysintheSBARwhenthesettlingtimewasdecreasedto8min.Atthesametime,thecompletenitrificationchangedtoshort-cutnitrificationandtheaverageeffluentNO-2/(NO-2+NO-3)was98.7%intheSBRand85.6%intheSBAR.Theshort-cutnitrifyingorganismswererapidlycultivatedinbothSBRandSBARbyusingsettlingtimeasselectionpressure.Duetothelimitationsofdissolvedoxygendiffusionintheaerobicgranularsludgeandthedifferentaffinitiesforoxygenbetweennitriteoxidizingbacteriaandammoniaoxidizingbacteria,nitriteaccumulationoccurredinbothSBRandSBAR.Ofthefactorstested,(.ie.pH,freeammoniaconcentration,temperatureandsludgeretentiontime)dissolvedoxygenwasthemainstresswhichpromotedshort-cutnitrification.Therateofammoniaoxidationbytheaerobicgranularsludgewas3.6and3.4timesasfastasthatoftheactivatedsludgeintheSBRandSBAR,respectively.Keywords:short-cutnitrification;aerobicgranularsludge;domesticwastewater;rapidcultivation;settlingtime1　(Introduction),SBRAGS.AGS、.AGS(Beunetal.,1999)、(Tayetal.,DOI:牨牥牨牫牰牱牨牤jhjkxxb牪牥牥牱牨牥牥牥牭10:2001)、(McSwainetal.,2005).,AGS,Tay(2002),14～28dAGS;(2003),67dAGS;Schwarzenbeck(2004)60～100dAGS;Hu(2005)SBR62dAGS.DHVAGS(deBruinetal.,2006),,AGS.COD/TN,.,、、、、.:SRT、、、pH、DO、、.,.COD/TN(3),,SBRSBARAGS.2　(Materialsandmethods)2.1　污泥和污水;,CODCr200～350mgL-1、NH+4-N50～85mgL-1、pH7.4～7.8.2.2　试验装置SBR,D=9cm,H=90cm,6L,,R1.SBAR,100cm,D1=9cm,D2=5cm,H1=90cm,15cm,6L,R2.1/3.,0.1m3h-1,(25±1)℃.:(2min),(330min),(),(2min),.,4.2.3　检验分析项目WTWMulti340i(DissolvedOxygen,DO)、pH;CODCr、MLSS、NO-2-N、NO-3-N、NH+4-N;OLYMPUSBX51OLYMPUSC-4040ZOOM.500μm,(MAF500)();500μm,(Lagunaetal.,1999)().2.4　试验方案,15min.R15min,R28min,AGS,AGS.3　(Results)3.1　SBR(R1)反应器R11.1,15min(1～45),NH+4-N1mgL-1,NO-2/(NO-2+NO-3)0.3%,.1　R1Fig.1　Effluentammonia,nitriteandnitrateconcentrationofreactorR15min(46～102,1～14d),NO-2/(NO-2+NO-3)0.3%97.8%;103～221,NO-2/(NO-2+NO-3)98.7%.R144971605　　　　　　　　　　272、3.2,NO-3-NNO-2-N,;3,,NO-3-N3.8mgL-1,.14d,,,.2　R144Fig.2　Profileofammonia,nitriteandnitrateconcentrationduringthe44thcycleinreactorR13　R197Fig.3　Profileofammonia,nitriteandnitrateconcentrationduringthe97thcycleinreactorR1R14.,79.4%()10.48～103.58μm(4,1);69(4,24),10.48～103.58μm10.26%,103.58～222.28μm36.28%,222.28～555.71μm52.34%,,7dAGS.117(4,72),222.28～555.71μm60.89%,69,,,68(17d),AGS.,AGS,,.5129(84),0～0.3mm、0.3～0.6mm0.6～0.8mm40.26%,41.30%18.44%.(6),5min17d,AGS.4　R1Fig.4　ParticlesizedistributionoftheactivatedsludgeinreactorR15　R1129()Fig.5　Particlesizedistributionofactivatedsludgeduringthe129thcycleinreactorR1(humidsieving)6(1)(3),5min,,7dAGS,,AGS;17dAGS160610:,205(52d),AGS,,.AGS,,、;.6　R1、R2Fig.6　MorphologyoftheactivatedsludgeinR1andR2　　2、3,R1AGS.,4～5min,97SV5min=4%,MLSS=0.87gL-1,SVI5min=46mLg-1,330min,NH+4-N0.16mgg-1min-1;(2),44,MLSS=3.773gL-1,300min,NH+4-N0.045mgg-1min-1;,MLSS3.773gL-10.87gL-1,NH+4-N2.6.3.2　SBAR(R2)反应器R27.7,R1,15min,NH+4-N0.54mgL-1(1～45),NO-2/(NO-2+NO-3)0.10%,.8min(46～81,9d),NH+4-N3.69mgL-1,NO-2/(NO-2+NO-3)0.05%91.45%,;82～217,NO-2/(NO-2+NO-3)85.6%.R2451178、7　R2Fig.7　Effluentammonia,nitriteandnitrateconcentrationofreactorR29.3、48、9,R2R1.R29d,.R210,R1.5dAGS,.8min17dAGS.11,129,AGS01607　　　　　　　　　　278　R145Fig.8　Profileofammonia,nitriteandnitrateconcentrationduringthe45thcycleinreactorR29　R2117Fig.9　Profileofammonia,nitriteandnitrateconcentrationduringthe117thcycleinreactorR2～0.3mm、0.3～0.6mm0.6～1.0mm44.55%、52.07%3.38%,500μ