低溶解氧丝状菌污泥微膨胀在SBR中的可行性彭赵旭

　61　6　　　　　　　　　　　　Vol.61　No.6　20106　　CIESC　Journal　　　June　2010SBR彭赵旭1,彭永臻1,2,桂丽娟1,刘旭亮1,薛　清1(1,150090;2,100022):(SBR),,、。,pH7.0～8.0,(23±0.5)℃,。()。,SBR,。,、(SS)4.5mg·L-1、0.2mg·L-15.0mg·L-1。DO、pH。:;SBR;;:X703.1　　　　　　:A:0438-1157(2010)06-1534-06FeasibilitystudyonlimitedbulkingofsludgecontainingfilamentousbacteriawithlowdissolvedoxygeninSBRPENGZhaoxu1,PENGYongzhen1,2,GUILijuan1,LIUXuliang1,XUEQing1(1SchoolofMunicipalandEnvironmentalEngineering,HarbinInstituteofTechnology,Harbin150090,Heilongjiang,China;2CollegeofEnvironmentandEnergyEngineering,BeijingInstituteofTechnology,Beijing100022,China)Abstract:Inordertoinvestigatethefeasibilityoflowenergycostlimitedbulkingofsludgecontainingfilamentousbacteriainsequencingbatchreactor(SBR),thestartofsludgebulking,theinhibitionofexcessivebulkingandthemethodmaintaininglimitedbulkingwerestudiedbytestusingactualdomesticsewage.Theresultsshowthat,whenpHisintherangeof7.0—8.0andtemperature(23±0.5)℃,continuouswaterfeedingandsimpleaerobicsegmentcansetupquicklauchhipoxicsludgefilamentousbulking.Reducingtimeofsupplyingoxygenandpre-setanaerobicphasecaneffectivelyinhibitreproductionoffilamentousbacteria.Afterthesuccessoflimitedbulkingstarts,thesystemwouldbekeptsteadilyatlimitedbulkingstatebytimelyadjustmentoperationmodeofSBR,basedonreactionconditionsandprocessingrequirements.Handlingactualdomesticwastewaterunderhipoxiclimitedbulkingstate,theeffluentconcentrationsofNH+4-N,PO3-4-PandSScancontrolledseparatelyat4.5mg·L-1,0.2mg·L-1and5.0mg·L-1below.Theprogressofbiochemicalreactionprocessineachcyclecanbereal-timeunderstoodfromtheanalysisofonlineparameterslikepH,DOandsoon.Keywords:lowdissolvedoxygen;SBRprocess;sludgelimitedbulking;nitrogenandphosphorusremoval　　2009-11-17,2010-01-13。:。:(1983—),,。:(EDBS07/1-53974092);“”(QAK200802)。　　　Receiveddate:2009-11-17.Correspondingauthor:Prof.PENGYongzhen,[e-mail]:supportedbytheEnvironmentandWaterIndustry(EWI)DevelopmentSchemeofSingapore(EDBS07/1-53974092);StateKeyLaboratoryofUrbanWaterResourceandEnvironment(HIT)(QAK200802).　　,、,。,、[1-3]。,,,。[4],,。[5]/(AO),0.5～0.7mg·L-1,。[6]AO。[7]。[8],,,,,。,,。SBR,,。1　1.1　,。,,1。,,,。1.2　1。SBR,,,700mm,200mm,12L。10cm,。,。,。、、、1　Table1　WaterqualityofwastewaterWaterqualityindexRange/mg·L-1Meanvalue/mg·L-1COD306.81—431.68372.31NH+4-N47.77—64.7557.52NO-2-N0—0.870.24NO-3-N0—1.570.64PO3-4-P3.94—4.764.45alkalinity(asCaCO3)287—418373、()。,(MLSS)。(AO),(SVI)150ml·g-1,,SBR。3,、,2。1　Fig.1　Schematicdiagramofexperimentalequipment1—DOmeter;2—pHmeter;3—speedregulator;4—DOprobe;5—pHprobe;6—ORPprobe;7—samplingplace;8—ORPmeter;9—rotameter;10—aerationpump;11—aerationjoint;12—heatingrod;13—purgevalve;14—waterstoragetank;15—peristalticpump　1.3　COD、NH+4-N、NO-2-N、NO-3-N、PO43--P、SV、SVI、MLSSMLVSS[9];0.45μm4℃,3h;OLYPUSBX51,DO、pH、ORPWTW340i。·1535·　6　　:SBR2　Table2　OperationmodelunderdifferentexperimentalstagesExperimentalphaseInfluentmodesInfluentvolume/LAnoxictime/hAerobictime/hOthertime/hHRT/hSRT/dsetupimpulsefeed302.53.51012.5inhibitionimpulsefeed30.523.51012.5maintenancecontinuousfeed30.523.51012.52　2.1　2.1.1　污泥膨胀的启动　、,。,[10]、[11]。,。,[12]。(M.parvicella)[13]。,、,,。2,,,(SVI)。10,SVI180ml·g-1250ml·g-1,。,(a),。Schuler[14]SVI,,SVI180ml·g-1。150ml·g-1,SVI,,。150ml·g-1。,,,,45SVI380ml·g-1。,。。2.1.2　过度膨胀的抑制　。,2　Fig.2　Variationsofsludgesettleabilityduringexperimentalperiod△MLSS;◆SVI　,,[15]。,,。,,SBR,。()COD,[16]。,460.5h,(2),(2)。,,,SVI380ml·g-1。:COD(COD330mg·L-1,COD60～70mg·L-1,COD40～50mg·L-1),;,。,·1536·　　　　　61　(SRT)。3,SRT12.5d38。46,90,SRT。,,。,,,。,96,0.5h,。,,(MLSS)(2),20,3000mg·L-1。MLSS[17],,。2.1.3　污泥微膨胀的维持　,。,,,。,[18]。,SVI260～300ml·g-1,。,(3)。,,,(SS)5mg·L-1。,(、DO、)(、、)。,、,,。2.2　,3　Fig.3　Microbialmorphologyunderlimitedfilamentoussludgebulking(120thcycle×100)　,30～50mg·L-1,,0.60mg·L-1(4)。,,15。0.20mg·L-1485mg·L-1,,。,,,。,,,。()485.34mg·L-18419.06mg·L-1,5.01mg·L-10.16mg·L-1,。2.5h2.0h,,,1.2mg·L-1。,,,,。,2.5～4.5mg·L-1。(),,0.2mg·L-1。,,,5。(),(PAO),PO3-4-P,β-(PHB)[19],·1537·　6　　:SBRpH。,,COD,PAOPHB,。COD,。,,,。,pH。DO,,pH[20]。,,DO。,DO、pH,。SBR。SBR,。SBR,,,。,,,。,SBR,。3　　(1)SBR、。()。(2),。(3),。4.5mg·L-1,0.2mg·L-1,SS5.0mg·L-1。(4)DO、pH。References[1]　MartinsAMP,PagillaK,HeijnenJJ,etal.Filamentousbulkingsludge—acriticalreview.WaterResearch,2004,38:793-817[2]　AgridiotisV,ForsterCF,MarquetCC.AdditionofAlandFesaltsduringtreatingofpapermilleffluentstoimproveactivatedsludgesettlementcharacteristics.BioresourceTechnology,2007,98:2926-2934[3]　WangJB,ChaiLH,ZhangY,etal.Microbialecologicalmodeloffilamentousbulkingandmechanisms.WorldJ.Microbiol.Biotechnol.,2006,22:1313-1320[4]　PengYongzhen(),GuoJianhua(),WangShuying(),ChenYing().Energysavingachievedbylimitedfilamentousbulkingunderlowdissolvedoxygen:derivation,originalityandtheoreticalbasis.EnvironmentalScience(),2008,29(12):3342-3347[5]　WangShuying(),BaiLu(),SongQianwu(),DengYanjun(),WangZhihui(),ZhangYue().EnergysavingapproachvialimitedfilamentoussludgebulkingunderlowDOcondition.JournalofBeijingUniversityofTechnology(),2006,32(12):1082-1086·1538·　　　　　61　[6]　GuoJianhua(),WangShuying(),PengYongzhen(),ZhengYanan(),HuangHuijun(),GeShijian(),SunZ