丙酸乙酸比例对生物除磷系统的影响研究

2/,3003845SBR(1#~5#),、／(C)0.5、2、10/,／(EBPR)COD、(SOP)、。PAOCODPAO／EBPR。／SOPSOPSOP88.2％,89.8％,92.2％,94.2％95.2％7％／EBPR。(EBPR)(PAO)X703Adoi10.3969/j.issn.1003-6504.2010.02.0121003-6504(2010)02-0049-03EffectofDifferentRatiosofPropionic/AceticAcidonBiologicalPhosphorusRemovalLIYa-jing,SUNLi-ping,CHENXiu-hui(DepartmentofEnvironmentalandMunicipalEngineering,TianjinInstituteofUrbanConstruction,Tianjin300384,China)AbstractFiveanaerobic-aerobicsequencingbatchreactorswereoperatedwithPAOsactivatedsludgerespectivelywithaceticacid,propionictoaceticacidcarbonmolarratioof0.5,2,10andpropionicacid.Theinfluenceofpropionic/aceticacidratioonCODdegradation,aswellasphosphorusrelease,uptakeandremovalduringenhancedbiologicalphosphorusremoval(EBPR)wereinvestigated.ResultsshowedthatCODdegradationfollowedthefirstorderkineticsanduptakerateofpropionicacidwasfasterthanthatofaceticacid,whichindicatedthatahigherratioofpropionic/aceticacidpromotedEBRPstability.Withtheincreaseofpropionic/aceticacidratio,thesolubleortho-phosphorus(SOP)releaseanduptakedecreased.SOPremovalefficiencywasobservedtoincreasefrom88.2%to95.2%.Higherratioofpropionic/aceticacidimprovedthephosphorusremoval.Keywordsenhancedbiologicalphosphorusremoval(EBPR);phosphorusaccumulatingorganisms(PAOs);propionicacid;aceticacid2009-04-25；2009－06－12043112011042271979-()022-23085306()[e-mail]。/(EBPR)。EBPR,(VFAs)(PHAs),PHAs(poly-P),;,PHAs、。,。VFAsPHAs,EBPR。2VFAs,EBPRPHAs[1-3],EBPR[4-6]。(SOP)、、,。11.1NaAcC3H5O2NaKH2PO4NH4Cl。1。EnvironmentalScience&Technology33220102Vol.33No.2Feb.201033(mg/LCOD150～300NH4Cl12～16、KH2PO48～14ZnCl20.1MgSO40.5FeCl30.5MnSO40.1KI0.1CaCl20.5H2BO40.1NiCl20.11Table1Feedcompositionofinfluentwastewater1.2SBR。5SBR(1#~5#)SBR4.5L0.7。46h2h4minDO≤0.2mg/L。3hDO≥2.0mg/L。0.5h20min10minSBR、、、、。3000mg/L10dCOD220mg/LPO43--P8～12mgP/LNH4＋-N10～14mgN/L。30d。5、(SOP)。1.3COD[7]PO43--P[7]MLSS[7]-[7]DO[7]。22.1PAO。SBR。/1。1SOP20d85%～95%5。/2、。2.2COD5SBRCOD(3)COD30minSCFA。COD((1))St=S0e-kt11tminS0CODmg/LSttCOD,mg/LkCODmin-1。3COD/k。502/2.3／SOP4/SOP。SOP2SCFASOPSCFASOP。45／55#SOP1#7.7mg/L／。523.7％～10.8％。/。SCFASOPSCFA/SCFASCFASOPSOP。/SOP、(5)SOPSOPSOP／SOPSOPSOP。SOP88.2％、89.8％、92.2％、94.2％95.2％。／EBPR。31EBPRCOD/PAOEBPREBPR。2/(C)PAOSCFA7.7mg/L。。3/(C)SOP7％/EBPR。[][1]JunHB,ShinHS.Substratestransformationinabiologi－calexcessphosphorusremovalsystem[J].WaterRes,1997,31(4):893-899.[2]FilipeCDM,DaiggerGT.Developmentofarevisedmetabolicmodelforthegrowthofphosphorus-accumulat－ingorganisms[J].WaterEnvironRes,1998,70(1).[3]JeonCO,ParkJM.Enhancedbiologicalphosphorusre－movalinasequencingbatchreactorsuppliedwithglucoseasasolecarbonsource[J].WaterRes,2000,34(7):2160-2170.[4]SatohH,MinoT,MatsuoT,etal.Uptakeoforganicsub－stratesandaccumulationofpolyhydroxyalkanoateslinkedwithglycolysisofintracellularcarbohydratesunderanaero－bicconditionsinthebiologicalexcessphosphateremovalprocess[J].WaterSciTechnol,1992,26(5-6):933-942.[5]YinguangChen,AndrewARandall,TerrenceMcCue.Theefficiencyofenhancedbiologicalphosphorusremovalfromrealwastewateraffectedbydifferentratiosofacetictopro－pionicacid[J].WaterRes,2004,38(7):27-36.[6],,.[J].20062961-3.MaMin,ChenYin-guang,GuGuo-wei.Environmentalcul－tureofglycogen-accumulatingorganismsinwastewatertreatmentprocess[J].EnvironmentalScience&Technology,2006,29(6):1-3.(inChinese)[7].[M].4.2002.StateEnvironmentalProtectionAdministration.AnalysisMethodtoInspectWaterandWastewater[M].4thedition.Beijing:ChinaEnvironmentalSciencePress,1989:248-250.(inChinese)51