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38Vol.3,No.820098ChineseJournalofEnvironmentalEngineeringAug.20091,3231,21142(1.,150090;2.,100124;3.,150076;4.(),100124),SBR,DO015019mg/L,/(O/A),:,SVI200mL/g,SS,COD80%,90%,90%,,4617%,,,X703A167329108(2009)0821345205StudyonpollutantremovalperformancewithlowDOandsludgemicro2bulkingZuoJinlong1,3WangShuying2PengYongzhen1,2PengZhaoxu1JiangAnxi1LiuYang4SunZhirong2(1.SchoolofMunicipalandEnvironmentalEngineering,HarbinInstituteofTechnology,Harbin150090,China;2.CollegeofEnvironmentalandEnergyEngineering,BeijingUniversityofTechnology,Beijing100124,China;3.DepartmentofEnvironmentalEngineering,HarbinUniversityofCommerce,Harbin150076,China;4.ChinaWaterHoldingPte.Ltd.(Singapore),Beijing100124,China)AbstractInordertoinvestigatethepollutantremovaleffectwithlowDOandsludgemicro2bulking,thesequencebatchreactor(SBR)operatedinaeration/anoxic(O/A)processwithmeanDOvalue015019mg/Lhasbeenstudied.TheresultsshowedthattheeffluentwaterqualitywasgoodwithlowSSvalue,theSVIcouldbecontrolledat200mL/g,andtheremovalratesofCOD,ammoniaandphosphoruscouldreach80%,90%and90%,respectively.Atthesametimetheaerationflowcouldbesavedto4617%.ItisconcludedthattheactivatedsludgeprocesswithlowDOandsludgemicro2bulkingcouldattaingoodwastewatereffluentquality,ex2ertlittleinfluenceonsludgesedimentationperformance,inthemeanwhiletheenergycostwouldbesavedtoo.KeywordslowDO;filamentousbacteria;sludgemicro2bulking;pollutants;removalefficiency;energysaving:(50778005);(863)(2006AA06Z319);(EDBS07/1253974092);(LBH2Z08200):2008-08-22;:2009-03-19:(1970),,,E2mail:mdjzjl@163.com3,E2mail:wsy@bjut.edu.cn,,,[13](SVI)150mg/L,[4][5,6],(DO)015019mg/L,,(SVI)150250mL/g,,,,,[7][8,9],(SBR),3,,[1012]SBR,,,1111,,NaHCO3NaOHpH:pH615715;COD280340mg/L;NH+42N4050mg/L;PO3-42P57mg/L1mL/L([13])112SBR,,,11Fig11Schematicdiagramofexperimentalequipment700mm,200mm,12L,3L,012510cm,,,pHDOORP(),2225DO(1mg/L),,[14,15]ORP(ORP,)[1618]/(O/A),3,8h,2h1h()2h3h,1015d,MLSS30003500mg/L90d(),SVI150250mL/g,,,,,1gNO-22NNO-32NN2,(BOD)1171g1186g[19],,NO-22NNO-32N,,(10%),,1015min,COD113,CODNH+42NNO22NNO32NPO3-42PMLSS,COD5B23COD;NO-32N;NO-22NN2(12)2;NH+42N;MLSSSS;PO3-42P;DOpHORPWTWinoLabOxilevel2;OLYMPUSBX512211,DO2mg/L,013COD/(kgMLSSd)1,,DO015019mg/L,0105COD/(kgMLSSd)3,8h1015d,MLSS30003500mg/L10d,SVI200mL/g,,SVSVI264318:2SVSVIFig12VariationofSVandSVIduringstart2upperiod2.2SS2.2.1,,,,,33:(a),(b),3(a),,,;3(b),,,,:,,,,[20],,3(200)Fig13Filamentousactivatedsludgebeforeandaftermicro2bulking(200)2.2.2,SBR,SS12mg/L,,,SBRSS,,3,,,,,[21]213,,1015d(1SRT),60d,2.3.1COD(DO2mg/L,)(DO)COD44CODFig14VariationofCODwithtimebeforeandafteractivatedsludgemicro2bulking4,,COD,74313,COD:,DO(),,,COD,DO,COD,4,COD,2h,COD50mg/L,COD80%88%,,DO,2.3.2SBRDO(DO0173mg/L),4050mg/L,,90%,5,DO(0173mg/L)5Fig.5Nitrogenpollutantremovaleffectwithmicro2bulkingunderlowDO(simultaneousnitrificationanddenitrification,SND)SBR,SND[22]SND,[22],SNDSND,DO,DO,DOHanaki[23],,1,DO,,,,,,,,,,2.3.3,O/ASBRO,DO,DO,6,O90%,OPO3-42P110mg/L(DO=2mg/L),,6Fig.6Removaleffectofphosphatewithmicro2bulkingunderlowDO(A),NO-22N,SBR,214,DO,84318:,,DO0173mg/L,8L/h,DO=2mg/L15L/h,4617%DO,,,50%60%,3(1),,,,(2)(DO=0173mg/L),,SS,COD80%;90%,SND;90%,(3)DO,DO0173mg/L,4617%,,[1],,,..,2003,29(3):159162[2],,,..,2006,26(5):5456[3],..,2003,29(7):913[4]KruitJ.,HulsbeekJ.,VisserA.Bulkingsludgesolved?Wat.Sci.Tech.,2002,46(12):457464[5].[].,2004.3540[6],,,.SBR.,2004,20(8):4042[7],,,..,2008,29(12):33423347[8],,,.A/O.,2008,29(12):33483352[9],,,.A2/O.,2008,24(23):3335[10]RordriguesA.C.,BritoA.G.,MeloL.F.Posttreat2mentofabrewerywastewaterusingasequencingbatchre2actor.Wat.Environ.Res.,2001,73(1):4551[11]PiersonJ.A.,PavlostathisS.G.Real2timemonitoringandcontrolofsequencingbatchreactorsforsecondarytreatmentofapoultryprocessingwastewater.Wat.Envi2ron.Res.,2000,72(5):585592[12],,.SBR.,2004,24(4):576580[13]SaitoT.,BrdjanovicD.,VanLoosdrechtM.C.M.Effectofnitriteonphosphateuptakebyphosphateaccu2mulatingorganisms.Wat.Res.,2004,38(17):37603768[14]LinH.,LuK.J.SludgesettlingandonlineNAD(P)Hfluorescenceprofilesinwastewatertreatmentbioreactorspreconcentratedatlowdissolvedoxygenconcentrations.Wat.Res.,2007,41(5):18771884[15]PolliceA.,TandoiV.,LestingiC.Influenceofaerationandsludgeretentiontimeonammoniumoxidationtonitriteandnitrate.Wat.Res.,2002,36(10):25412546[16]Marsili2LibelliS.ControlofSBRswitchingbyfuzzypat2ternrecognition.Wat.Res.,2006,40(6):10951107[17]YuanZ.,KellerJ.,LantP.OptimizationandControlofNitrogenRemovalActivatedSludgeProcesses:AReviewofRecentDevelopment.Netherlands:KluwerAcademicPublisher,2003[18],,,..,2008,24(10):1620[19]IsaacsS.H.,HenzeM.Controlledcarbonsourceaddi2tiontoanalternatingnitrification2denitrificationwastewatertreatmentprocessincludingbiologicalPremoval.Wat.Res.,1995,29(1):7789[20],,,..,2006,32(12):3236[21],,..,2003,30(4):8891[22]HyungseokK.,AhnK.H.,LeeH.J.,etal.Nitrogenremovalfromsyntheticwastewaterbysimultaneousnitrifi2cationanddenitrification(SND)vianitriteinanintermit2tently2aeratedreactor.Wat.Res.,1999,33(1):145154[23]HanakiK.Nitrificationatlowlevelsofdissolvedoxygenwithandwithoutorganicloadinginasu