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A/O,,,,,(,100124):A/O,COD(NCOD)(DO)S2-,A/O,.:A/ONCOD,,COD,;NCOD,,.:;A/O;;;;:X703:A:0254-0037(2009)12-1663-07:2008201209.:.:(1963),,,.A/O,,.A/O,Spector1975,A/O,,[122].,A/O,[3].,A/O,,[4],.,,((DO)(NP)pHCOD[527]),,2NCODDO,A/O.1111,,NH+42NS2-,(CODCr)/(NH+42N)315610,,1.1Table1Componentsofwastewatermg/L(CODCr)(TP)(NH+42N)(NO-32N)(SO2-4)(S2-)28048071010128090001511631791219615129112A/O,1.3512200912JOURNALOFBEIJINGUNIVERSITYOFTECHNOLOGYVol.35No.12Dec.20091Fig.1Schematicdiagramofexperimentalprocess,=210m016m110m,,,.,,PVC.WTWIQSensorNetSystem2020,DO.1135B23BCOD(CODCr);(NH+42N);(NO-32N);(TP);(S2-);(SO2-4);ROYCE711271(MLSS);WTWIQSensorNetSystem2020(DO);ThermoOrion868pHpH;LeicaDMIL;1000mL30min,SV;SV(MLSS)SVI,;MPN[8].2NCOD(COD)DOA/O,.211NCODNCOD.,NCOD,.NCOD,,[9].,Palm[10]1980,(DO)011610mg/L,,;,,NCOD0105kg,NCOD015kg[9];Pipes32,NCOD01250145kg,SVI[9];Chao[11],NCOD016113kg118kg.,NCOD,.21111A/O,NCOD46612009NCOD=QSaX1V1+X2V2(1),NCODCOD(kg);Q(m3/d);Sa(CODCr)(mg/L);X1,(MLSS),(mg/L);V1(m3);X2,(MLSS),(mg/L);V2(m3).NCOD016kg,[9211],NCOD0135kg,(DO)310410mg/L.:(hydroliretentiontime,HRT)210h;HRT410h.,,SVI.SVI2.,A/ONCODDO,SVI.14d,SVI300mL/g,SVI,SVI300mL/g(150mL/g),.,,.,(35004000mg/L),4000mg/L,COD,(CODCr)50mg/L,TP,(TP)110mg/L.,(100)3.2NCOD,SVIFig.2FluctuationofSVIversusrunningtimewhenthesludgeloadingwasnotchanged3Fig.3Microscopepictureofactivatedsludgezoogloewhensludgefilamentousbulkingwascontrolled21112NCOD,NCOD.NCOD4SVINCODFig.4ThecorrelationbetweenSVIandsludgeloadings,,:1)(DO)310410mg/L;2)(MLSS)2000mg/L;3),NCOD,2d.SVINCOD4.,2,,,,[12].:DO(MLSS),NCOD0115015kg,,NCOD0115kg,,SVI,300mL/g,,,5(a);NCOD015kg,,5(b);NCOD0155kg,,,SVI,,,5(c).A/O,A/O566112,:A/O,,,,.,.A/ONCOD0115kg,NCOD0166kg,,(CODCr)30mg/L,.,,,,.NCOD0155kg,NCOD214kg,,(CODCr)80mg/L,,,DO,,,.5NCODFig.5Microscopepicturesofactivatedsludgezoogloeatdifferentsludgeloadings212DODO,(DO)[13].(DO)[14].(sphaerotilusnatans),(DO),[15].NCOD0115kg0155kg,(DO),DO,(DO)015315mg/L.DO,NCOD,(MLSS)2000mg/L.21211NCODDO,NCOD0115kg,(DO),,.,(DO)[14],(DO)015mg/L,(DO),(DO),(DO)[15].NCODSVI(DO)6.21212NCODDO,,NCOD0155kg,DO,,SVI(DO).NCOD(DO):[15],(DO)NCOD,,.,,DO,,(DO),[12].SVI(DO)7.666120096NCOD,SVI(DO)Fig.6ThecorrelationbetweenSVIand(DO)whensludgeloadingwaslow7NCOD,SVI(DO)Fig.7ThecorrelationbetweenSVIand(DO)whensludgeloadingwashigh3NCOD(DO),,SVI300mL/g,NCODDO.A/O/,.,(sulfate2reducingbacteria,SRB)(sulfide2oxidingbacteria,SOB),.,.2,,[16],021N[17].(S2-)15mg/L,(SO2-4)2mg/L,(SO2-4)47123mg/L,.S2-,[Zn(AC)2](S2-),S2-,Zn2+S2-Zn2++S2-ZnS(2),S2-,.,,:1)HRT210h,HRT410h;2)NCOD014kg;3)(DO)215mg/L;4)(MLSS)2000mg/L.8(SO2-4)SVIFig.8Fluctuationof(SO2-4)andSVIversustimeduringtheprocessofaddingZn(Ac)2(SO2-4),S2-,(SO2-4)(SO2-4)SVIS2-,8.,(SO2-4),SVI(SO2-4),8,(SO2-4)(7116mg/L),SVI(132185mL/g),(SVI150mL/g).,,(SO2-4),,SVI.SOBSRB,SRBSOB17/mL4000/mL;10,SVI148mL/g,SRBSOB114105/mL766112,:A/O200/mL,SRBSOB,.(S2-)SRB,S2-,SO2-4((SO2-4)30mg/L,(SO2-4)5mg/L),,SRB,SRB;SOB,,(,,),S2-,SOB,.,,,,,,,.,S2-SO2-4,,,.41)A/ONCOD,NCOD,.2)A/ONCOD,,(DO),.3)A/O,,,,.:[1],.[M].:,2005:2422247.[2],.[J].,2005(1):37238.LIGen2dong,DIAOShu2shen.Discussofbiologicaldephosphorizationtechnologyinwastewater[J].EnvironmentalTechnology,2005(1):37238.(inChinese)[3],,.[J].,2003,29(12):32234.WUFan2song,PENGYong2zhen,WANGWei2bin.PandNremovalsandbio2selector[J].Water&WastewaterEngineering,2003,29(12):32234.(inChinese)[4],.[J].,2006,30(2):96297.WANGLi,YANLei.Reasonofsludgebulkinginactivatedsludgeprocessoforbansewageanditscontrol[J].HeilongjiangEnvironmentalJournal,2006,30(2):96297.(inChinese)[5],,,.[J].,2003,29(7):16217.ZOUXiao2rong,LIHong2min,LIANGZhong2hua,etal.Controlexamplesofsludgebulking[J].Water&WastewaterEngineering,2003,29(7):16217.(inChinese)[6],,,.[J].,2003,29(3):1592162.GAOChun2di,PENGYong2zhen,PENGFeng,etal.Filamentousbulkingcausedbynutrientdeficiencyandbulkingcontrol[J].TechnologyofWaterTreatment,2003,29(3):1592162.(inChinese)[7].[J].,1994,16(1):12215.LIUZhi2hui.EffectsofC,N,Pratioonzoogloeaandsludgebulking[J].ChongqingEnvironmentalScience,1994,16(1):12215.(inChinese)[8],,.[M].:,2002:2322241.[9],,,.SBR[J].,1999,15(6):11213.86612009ZHOULi,PENGYong2zhen,GAOChun2di,etal.InfluenceofsludgeloadonfilamentoussludgebulkinginSBRprocess[J].ChinaWater&Wastewater,1999,15(6):11213.(inChinese)[10]PALMJC,JEKINSD,PARKERDS.Relationshipbetweenorganicloading,dissolvedoxygenconcentrationandsludgesettleability[J].WPCF,1980,52(10):248422506.[11]CHAOAC,KEINATHTM.Influenceofprocessloadingindensityonsludgeclarificationandthickeningcharacteristics[J].WaterResearch,1979,13:121321223.[12],.[J].,2005,15(18):1892190.WANGYu2guang,LIYa2xin.Thetheoryanddesigncalculationofthebio2selector[J].Sci2TechInformationDevelopment&Economy,2005,15(18):1892190.(inChinese)[13],.[J].,2006,23(3):1262128.LIQiong,WANGYan2bo.Thecontroloffilamentousbulking[J].JournalofPingyuanUniversity,2006,23(3):1262128.(inChinese)[14]TAK#CSI,FLEITE.Modellingofthemicromorphologyoftheactivatedsludgefloc:lowDO,lowF/Mbulking[J].WatSciTech,1995,31(2):2352243.[15],,,.DO[J].,2001,17(5):12215.GAOChun2di,WANGShu2ying,PENGYong2zhen,etal.InfluenceofD