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4 3环境工程学报Vol.4,No.320103ChineseJournalofEnvironmentalEngineeringMar.2010李亚静1,2 陈修辉2 孙力平2 季 民1(1.,300072;2.,300384) 4SBR(1#～4#),4//(DPB),。:(1)COD,,(SOP);COD,。(2)SRT=15d,,。(3),/,SOP。/,。。 / X703.1 A 1673-9108(2010)03-0513-04EffectofdifferentcarbonsourcesandSRTondenitrifyingphosphorusremovalLiYajing1,2 ChenXiuhui2 SunLiping2 JiMin1(1.SchoolofEnvironmentalScienceandEngineering,TianjinUniversity,Tianjin300072,China;2.DepartmentofEnvironmentalandMunicipalEngineering,TianjinInstituteofUrbanConstruction,Tianjin300384,China)Abstract Theanaerobic/anoxicsequencingbatchreactorswereoperatedwithDPBactivatedsludgewithdifferentratiosofpropionictoaceticacid(reactor1#～4#).TheinfluencesofdifferentcarbonsourceandSRTondenitrifyingphosphorusremovalwereinvestigated.Theresultsshowedthat:(1)thephosphatereleaserateandtheremovalrateofSOPincreasedwiththeincreaseofcarbonsourceconcentrationunderanaerobiccondition.Howeverwhenthecarbonsourceaddedinanaerobicphasewasaboveacertainvalue,theresidualCODinhibitedthesubsequentdenitrifyingdephosphorusuptakeunderanoxiccondition.(2)SRThasanobviouseffectontheSOPremoval,theperformanceofactivatedsludgeandthephosphorusremovalefficiencybothreachedthebetterresultswhentheSRTwas15d.(3)WhenCODandSRTaresameinthefourreactors,withtheincreaseofpro-pionic/aceticacidratio,theSOPremovalratedecreases.Apparently,higherratioofpropionic/aceticacidisnotconducivetotheimprovementofphosphorusremoval.Sotheaceticacidismorefitforthecarbonsourceintheanaerobic/anoxicwastewatertreatmentprocess.Keywords propionic/aceticacid;denitrifyingphosphorusremoval;carbonsource;sludgeage:(043112011);(04227):2009-03-10;:2009-04-28:(1979～),,,,。E-mail:yajingli@eyou.com (DNPAOs)[1～3]。DNPAOs(PAOs)[4,5],(PHAs),(),(),,[6,7]。、。SCFAs()[8]。,EBPR()。SCFAs,/EBPR。SBR,、/(DNPAO),4,,,。3。1 1.1 ,(NaAc)(C3H5O2Na),KH2PO4,NH4Cl。120min200mLKNO3,。1。1 Table1 Compositionofsyntheticwastewater(mg/L)COD150～300NH4Cl12～16KNO328～76、KH2PO48～14ZnCl20.1MgSO40.5FeCl30.5MnSO40.1KI0.1CaCl20.5H2BO40.1NiCl20.11.2 SBR,。4SBR,SBR4.5L,0.7。3,8h,:2h(5min),4h,、DO00～0.5mg/L。30min,20min,70min。SBR、、、。:3000mg/L,15d,COD220mg/L,PO3-4-P8～12mgP/L,NH+4-N10～14mgN/L。7d80%,。1.3 COD[9];PO3-4-P[9];MLSS[9]。2 2.1 /SOP1,,SOP8～12mg/L,SOP。32d,SOP1.76、1.68、1.982.35mg/L,84.56%、85.26%、82.63%79.42%。10SOP,75%～90%,40d/。1 -1#～4#SOPFig.1 SOPconcentrationcurvesduringanaerobic/anoxicstageinthe1#～4#reactors2.2 EBPR,。,SOP。SBR,15d,COD,2。2:(1)COD,SOP。COD300mg/L,SOP。5143:2 1#～4#Fig.2 Effectofcarbonsourceconcentrationondenitrifyingphosphorusremovalinthe1#～4#reactorsPHB,SOP,,COD220mg/L。(2),/,SOP。/,。2.3 2,:(1),SOP。:SOP,SOP。,SOP。(2),。DN-PAO,VFA。VFAATP,,,。。(3),SOP,SOP。,,,,2h,2h。2 、CODTable2 RelationofanaerobicreleaseandanoxicuptakewithdifferentCODinthe1#～4#reactors1#2#3#4#COD(mg/L)150220300150220300150220300150220300SOP(%)80.7388.1987.2081.7785.0585.1480.6283.7484.1370.8774.0473.29(mgP/L)19.3821.6023.3620.2822.3021.6719.9421.9521.7919.4820.7021.54(mgP/L)27.5530.8631.9428.3131.0630.3828.0530.4530.3826.5128.0028.84(mgP/(L·h))14.4815.9015.8414.7815.1014.1715.0815.2513.2413.589.3410.14(mgP/(L·h))13.3014.6017.6015.3016.7015.7014.4015.9016.4012.9013.3615.50(mgP/(L·h))9.6910.8011.6810.1411.1510.849.9710.9810.909.7410.3510.77(mgP/(L·h))6.897.727.997.087.777.607.017.617.606.637.007.212.4 ,3(20、1510d),SRTSOP。3,3:(1)SRT,SRTSOP,,(SRT15d),,,。5154(SRT15d),。SRT=15d,SOP86.85%、85.13%、83.60%75.43%,,。(2),/,SOP。/,,。3 1#～4#SRTSOPFig.3 SOPconcentrationchangewithdifferentSRTinthe1#～4#reactors3 (1),40d,SOP75%～90%,/。(2)COD220mg/L。,/,SOP。/,。(3)SRT=15d,SOP86.85%、85.13%、83.60%75.43%,, 。,/,SOP。/,。[1],,,.———().,2002,28(6):6～11[2]MinoT.Microbiologyandbiochemistryoftheenhancedbi-ologicalphosphateremovalprocess.Wat.Res.,1998,32(11):3193～3207[3]vanLoosdrechtM.C.M.Biologicalphosphorusremovalprocesses.Microbiol.Biotech.Nol.,1997,48(2):289～296[4]AhnJ.,DaidouT.,TsunedaS.,etal.Metabolicbehav-iorofdenitrifyingphosphateaccumulatingorganismsundernitrateandnitriteelectronacceptorconditions.J.Biosci.Bioeng.,2001,92:442～446[5]TsunedaS.,OhnoT.,SoejimaK.,etal.Simultaneousnitrogenandphosphorusremovalusingdenitrifyingphos-phateaccumulatingorganismsinasequencingbatchreac-tor.Biochem.Eng.J.,2006,27:191～196[6]KubaT.,vanLoosdrechtM.C.M.,HeijnenJ.J.Phos-phorusandnitrogenremovalwithminimalCODrequirementbyintegrationofdenitrifyingdephosphatationandnitrifica-tioninatwo-sludgesystem.Wat.Res.,1996,30(7):1702～1710[7]KubaT.,SmoldersG.,vanLoosdrechtM.C.M.,etal.Biologicalphosphorusremovalfromwastewaterbyanaero-bic-anoxicsequencingbatchreactor.Wat.Sci.Tech.,1993,27(5～6):241～252[8]LiuY.,ChenY.G.,ZhengH.,etal.Effectofdifferentratiosofpropionictoaceticacidonphosphorusremovalbyanenrichedcultureofphosphorusaccumulatingorganisms.ActaScientiaeCircumstantiae,2006,26(8):1278～1283[9].(4).:,2002516