低氧丝状菌污泥微膨胀节能方法王淑莹

王淑莹1,白　璐1,2,宋乾武2,邓彦君1,王之晖2,张　2(1.,　100022;2.,　100012)　:,,./(A/O),ρDO0.5～0.7mg·L-1,,130～180mL·g-1.,,.ρDO=2.5mg·L-1,,,ρSS5mg·L-1;;,0.75m3·h-10.28m3·h-1,60%.:;;;:X703.1:A:0254-0037(2006)12-1082-05:2006-05-17.:(50521140075);(8062006).:(1953-),,,.　　90%50%..,,.,..,,,,..,(ISVI)200～300mL·g-1,,[1].,,[2].,,,ISVI,,25%,(θTN)45%75%[3].,[3],,,.,,[4],,.,.1　1.1　　　.,,.1.1　Tab.1　Influentcharacteristicsmg·L-1ρCODρBODρ(NH+4-N)ρTNρ(PO+4-P)ρTP180～32090～16065～9375～1037.63～13.28.2～15.23212200612JOURNALOFBEIJINGUNIVERSITYOFTECHNOLOGYVol.32No.12Dec.20061.2　1,66L,6,1/6,,5.,.,,1,,.20.5L,,.,.1　A/OFig.1　SchematicdiagramofA/Oprocess　1.3　ρCOD5B-3COD;ρ(NO-3-N);ρ(NO-2-N)N-(1-)-;ρ(NH+4-N);ρTNmultiN/C3000TN;ρMLSS、ρSS;ρDOWTWinoLabOxilevel2;OLYMPUSBX51/BX52.2　2.1　2.1.1　DOISVI,.,ρMLSS,3.0～4.0g·L-1,20～25℃,150%.,,ρDO.(HRT)7.3h,1.2h,6.1h.A/OρDO2mg·L-1,,.,ρDO2.5mg·L-1,,ISVI110mL·g-1.ρDO2.5mg·L-10.5mg·L-1,,,10dISVI110mg·L-1155mg·L-1,,(2).2.1.2　DOISVIHRT、,ISVI110mL·g-1,ρDO2.5mg·L-11、0.5、0.4、0.2～0.3mg·L-1,ISVI,.,DO.,6,,.SBR,DO[5-6].,,53,,300%,.ρDO=1083　12:0.2～0.3mg·L-1,ISVI,6d,20dISVI200mL·g-1.,150%,ρDO0.5mg·L-1,,ISVI150mL·g-1(3).2,.,,[7]..2　DOFig.2　EffectofreducingDOsharplyonsludgebulking　3　ISVIFig.3　EffectofflowpatterninaerationtankonISVI　2.2　DO.2,,ρDO0.5～0.7mg·L-1,.2.111d,ISVI155mg·L-1.240d,ISVI130～180mg·L-1.,.,.2.3　2.3.1　SS4　Fig.4　Limitedfilamentoussludgebulking(ISVI=162mL·g-1)(×200),.ρSS180～350mg·L-1,,ρSS10mg·L-1,.1,,.ρSS5mg·L-1,(1L).、,,、,4.,.,,,.,[8].,,,.,、,,,,.,1084　　　　　　　2006,.,,.2.3.2　ρDOCODCOD,θCOD80%.,,.5　ρDOθqARFig.5　EffectofθonρDOandvariationofqAR,,HRT,.,.,,,,.,,.,ρDO0.5～1mg·L-1,θTN,52%54%(5).,DO,.,(qAR).ρDO0.5～0.7mg·L-1,qAR0.28m3·h-1,ρDO=2.5mg·L-1,qAR=0.75m3·h-1,60%.,.,HRT,,.,,,,,,[3]..3　1)A/O,DO,DO,,.ρDO=0.5～0.7mg·L-1,ISVI130～180mg·L-1..2),、.,θCOD80%,ρDO0.5～0.7mg·L-1,θTN.,.3)A/O,66L,,,ρDO0.5～0.7mg·L-1,60%.:[1].[M].:,1992.[2]ZHAOHW,MAVINICDS,OldhamKW.Controllingfactorsforsimultaneousnitrificationanddenitrificationinatwo-stageintermittentaerationprocesstreatingdomesticsewage.Beijing:WatRes,1999,33(4):961-970.[3].[D].:,2004.CHENYing.Nitritation-denitritationandactivatedsludgebulkingofdomesticwastewatertreatment[D].Beijing:CollegeofEnvironmentandEnergyEngineering,BeijingInstituteofTechnology,2004.(inChinese)[4]SEZGINM,JENKINSD,andPARKERDS.Aunifiedtheoryoffilamentousactivatedsludgebulking[J].Wat.Poll.Con-trol,1978,50:362-368.[5]PENGDC,NICOLASB,DELGENESJPandRENEM.AerobicGranularSludge-ACaseReport[J].WatRes,1999,33(3):890-903.[6],,,.[J].,2006,26(5):54-56.1085　12:BAILu,WANGShu-ying,PENGYong-zhen,etal.StudyonactivatedssludgesettleabilityunderlowDOcondition[J].IndustrialWaterTreatment,2006,26(5):54-56.(inChinese)[7]IMRET,ERONF.Modellingofthemicromorphologyoftheactivatedsludgefloc:lowDO,lowF/Mbulking[J].WatSciTech,1995,31(2):235-243.[8]ANTONIOM,KRISHNAP,JOSEPHH.Filamentousbulkingsludge-acriticalreview[J].WatRes,2004,38(4):793-817.EnergySavingApproachviaLimitedFilamentousSludgeBulkingUnderLowDOConditionWANGShu-ying1,BAILu1,2,SONGQian-wu2,DENGYan-jun1,WANGZhi-hui,ZHANGYue(1.CollegeofEnvironmentandEnergyEngineering,BeijingInstituteofTechnology,Beijing100022,China;2.CentreofEngineeringDesign,ChineseResearchAcademyofEnvironmentalSciences,Beijing100012,China)Abstract:Inordertolowerthecostofactivatedsludgewastewatertreatmentandreducetheenergyofoxygensupply,energysavingapproachviafilamentoussludgebulkingunderlowDOconditionwasstudiedbyexperi-ments.RealdomesticwastewaterwastreatedbyA/Oprocess.LimitedfilamentoussludgebulkingstayedforalongtimewhenρDOwascontrolledas0.5～0.7mg·L-1.ThevalueofSludgeVolumeIndexwasbetween130mL·g-1to180mL·g-1.ouringthisperiod,thesystemworkedwellanddidn'tlosesludgefromclarifi-er.ComparedwiththeconditionofρDO=2.5mg·L-1andexcellentsludgesettleobility,theeffluentwasclearer.Suspendedsolidsineffluentwaslessthan5mg·L-1,CODandTNremovalratewasnearlyasthesameasusual.Areationcmsumptiondecreased,from0.75m3·h-1to0.28m3·h-1,andabout60%ofitwassaved.Keywords:limitedfilamentoussludgebulking;lowDO;Saveaerationconsumption;settleability1086　　　　　　　2006