SBR反应器排水高度与直径比对污泥好氧颗粒化的影响

2008,28(6)512~516ChinaEnvironmentalScienceSBR*,,,,(,100124),(H/D)1:15:1SBR(AB)(AGS),H/D.,B16d,A36d.2612(204d),.,BAGSA,,,.BAGS,;AAGS.,H/D.X703.1A10006923(2008)06051205InfluenceofSBRdrainageheightanddiameterratioonaerobicsludgegranulation.GAOJing-feng*,GUOJian-qiu,CHENRan-ni,SUKai,PENGYong-zhen(CollegeofEnvironmentalandEnergyEngineering,BeijingUniversityofTechnology,Beijing100124,China).ChinaEnvironmentalScience,2008,28(6)512~516AbstractInthesequencingbatchreactor(SBR)oftreatingrealdomesticwastewateroftheratioofdrainageheightanddiameter(H/D)beingrespectively1:1and5:1(namedasAandB)aerobicgranularsludge(AGS)wascultured,theH/Dinfluenceonaerobicsludgegranulationwasinvestigated.Breactoronlyused16dayscouldrealizeaerobicsludgegranulation,andAreactorused36dayscouldrealizethegranulation.Bothreactorswerestablyrunning612cycles(204days).Nitrificationeffectwasgood.Particlesizedistribution,sludgemorphologyresultsshowedthattheAGSformedinBreactorwasgreaterthantheparticlesizeofAreactorandstructurewasdenser,morestable.AGSofBreactorcomprisedlotsofcocciandbacilli,withoutfilamentousbacteria;andAGSofAreactorcontainedgreatamountoffilamentousbacteria.OnthisbasistherelationsamongH/D,minimumsettlingvelocityanddesignsettlingtimewereprobedinto.Keywordsaerobicgranularsludgeminimumsettlingvelocitysettlingtimesequencingbatchreactordrainageheightdiameter(AGS)[18].AGSSBR,(H/D)[12,9].DHVAGS[10],H/DSBR.,2H/DSBRAGS,H/D,AGS.11.1.,COD200~300mg/L,NH4+N60~80mg/L,PO43P4~5mg/L,pH7.4~7.8.1.22SBR,AB,H18cm45cm,D18cm9cm,H/D1:15:1,9.2L5.8L,50%.,20071116(50508001);(KM200510005020)*,,[e-mail]6SBR513DO2~4mg/L,(20±1).AB:2min,7.5h,1~5min3~6min,2min.,3.1.3SVSVIMLSSMLVSSCODNO2NNO3NNH4+NPO43P;WTWMulti340iDOpHORP.OlympusBX51OlympusDP71;AGS,FEIQuanta200(SEM).500µm,(MAF5001);500µm,[11],0.3,0.6,0.8,1.0,1.5,2.0,2.5mm.22.17,612.AGS.AGS,3:AGS.MLSS.AH/DB,.A(5~16)5~1min,(17~108)1min2min;(109~351)2min;(352~612)3min.(1~49)B6min;(50~375)5,4,3min;(376~612)4min.2.1.11(a),A,AGS3,NH4+N3.AAGS108,,,NH4+N,6.78mg/L.AGS,NH4+N1mg/L.1(b),BA,H/D(5:1),,NH4+N1mg/L.A,BAGS.0102030405060700100200300400500600(mg/L)NH4+NNO2N+NO3N(a)0102030405060700100200300400500600(mg/L)NO2N+NO3NNH4+N(b)1ABFig.1Changesofeffluentammonia,nitriteandnitrateconcentrationswithtimeinreactorsAandB(a)A(b)B2.1.2AGS.2(a)37,85,1082(b)8,49,137,,,.2(a),A108,300µm,AGS.,AGS.585442,51428AGS,300~800µm,71.77%.AH/D,.01020304050607080901000~0.30.3~0.60.6~0.80.8~1.01.0~1.51.5(%)3785108442585(a)01020304050607080901000~0.30.3~0.60.6~0.80.8~1.01.0~1.51.5(mm)(%)849137400601(b)2ABAGSFig.2ParticlesizedistributionoftheactivatedsludgeinreactorsAandB(a)A(b)BB,2(b),49,300µm52.81%,,AGS.137,300µm70.20%.,AGS,601,AGS,400,AGS,.AAGS,BAGS,,.2.1.33286AGSSEM.3(a),A,,;,.3(c),BAGS,(,).AAGS[3(b)].BAGS,,[3(d)].(a)(b)(c)(d)3AGSSEMFig.3SEMimagesofaerobicgranules(a)(b)AAGS(×50)(×5000);(c)(d)BAGS(×50)(×5000)2,H/D,AGS.SBR,,,AGS.H/D,,,AGS;H/D.2.22.2.1,(V),H,D.AGS,(v),ts,td,q,(1)AGSvmin.AGS,tsvmin,td,q,6SBR515H/D,vmin,ts,tdq.minsdHvtt=+(1)2π4VDH=(2)dVtq=(3)(1)~(3):2sdminmin4HHttDHvvqπ=−=−(4)2.2.2H/DtsvminV=21.195m3,q=42.39m3/h,td=0.5h,(4),tsHDqvmin.td,vminH/D,ts.4,vmin,tsH/D;vmin,H/D,,ts=0,H/D.H/D,(4),tsvmin,vmin,,ts=0.,vmin.ts=0,H/Dvmin,AGS,,AGS[12].050100150200051015202530H/Dts(min)8m/h10m/h12m/h14m/h16m/h18m/h4vmintsH/DFig.4RelationshipbetweentstimeandH/DforadesiredvminH/Dvmin5.5,H/D,vmin,vmin,AGS.SBR(H/Dvmin)AGS,(4)tstdq.D=3mH/D=1V=21.195m3,(4),vmin8~18m/h(AGSvmin10~16m/h[2]),ts5min(AGSts5min[4]),td17.5min5min,q1.21m3/min4.24m3/min.,q(td).H/DVvmin,tstd,td,,(2~5min[4])ts.,H/Dvmin,(4)vmintstdq,SBRAGS.01020304050600102030H/Dvmin(m/h)5H/DvminFig.5RelationshipbetweenmaximumvalueofvminandH/D33.12H/DSBR,AGS.H/DB49(16d)AGS,H/DA108(36d)AGS.BAGS,.AAGS.BAGS,,.3.2vmin,tsH/D,ts=0,H/D;H/D,ts=0,vmin;AGS,H/Dvmin.H/D,vmin,AGS.516283.3H/DvminSBR,H/DVvmin,tstd,q(td),AGS;H/DvminSBR,AGS,AGS.[1]MorgenrothE,SherdenT,LoosdrechtMCM,etal.Aerobicgranularsludgeinasequencingbatchreactor[J].WaterResearch,1997,31(12):31913194.[2]BeunJJ,LoosdrechtMCM,HeijnenJJ.Aerobicgranulationinasequencingbatchairliftreactor[J].WaterResearch,2002,36(3):702712.[3]DeKreukMK,PicioreanuC,HosseiniM,etal.KineticmodelofagranularsludgeSBR:Influencesonnutrientremoval[J].BiotechnologyandBioengineering,2007,97(4):801815.[4]McSwainBS,IrvineRL,WildererPA.Theinfluenceofsettlingtimeontheformationofaerobicgranules[J].WaterScienceandTechnology,2004,50(10):195202.[5]LiuY,TayJH.Stateoftheartofbiogranulationtechnologyforwastewatertreatment[J].BiotechnologyAdvances,2004,22(7):533563.[6]ZhengYM,YuHQ.Determinationoftheporesizedistributionandporosityofaerobicgranulesusingsize-exclusionchromato-graphy[J].WaterResearch,2007,41(1):3946.[7]XuH,LiuY.MechanismsofCd2+,Cu2+andNi2+biosorptionbyaerobicgranules[J].SeparationandPurificationTechnology,2008,58(3):400411.[8]LiuYQ,TayJH.Influenceofstarvationtimeonformationandstabilityofaerobicgranulesinsequencingbatchreactors[J].BioresourceTechnology,2008,99(5):980985.[9]QinL,LiuY,TayJH.Denitrificationonpoly-β-hydroxybutyrateinmicrobialgranularsludgesequencingbatchreactor[J