31820108ENVIRONMENTALSCIENCEVol.31No.8Aug.2010UCTCODC/N111221.4000452.400038UCTCODC/N.UCTC/NCOD.C/N15CODC/N20TNCODCOD350mg/LCOD350mg/LCOD350mg/LC/N10~20COD250~450mg/LC/N80%TP.UCTCODC/NX505A0250-3301201008-1846-052009-09-292009-12-122007DFA90660CSTC2006BB7305CSTC2006AA70031982~E-mailwindy0327@126.comEffectoftheInfluentCODandC/NRatioonPhosphorusRemovalofUCTSystemZHANGYuan1LUOGu-yuan1XUXiao-yi1CAOJia2SHUWei-qun21.KeyLaboratoryoftheThreeGorgesReservoirRegion'sEco-EnvironmentMinistryofEducationChongqingUniversityChongqing400045China2.FacultyofMilitaryPreventiveMedicineThirdMilitaryMedicalUniversityChongqing400038ChinaAbstractUCTisdeeplyinfluencedbyCODandC/Nratios.TocheckthisinfectiontheUCTsystemwasdesignedtorunatvarietyofinfluentCODandC/Nratios.TheresultsshowthatwhentheinfluentC/Nratioislowerthan15thehighinfluentconcentrationofCODincreasestheproliferationofheterotrophicbacteriaanddecreasesthephenomenonreleaserate.WhentheinfluentC/Nratioishigherthan20thelowinfluentconcentrationofTNdecreasestheproliferationofheterotrophicbacteriathephenomenonreleaseraterisewiththeincreaseofCOD.WhentheinfluentconcentrationofCODislowerthan350mg/Lthephenomenonofdenitrifyingphosphorus-uptakeisveryremarkable.ThephenomenonreleaseisremarkablewhentheinfluentconcentrationofCODishigherthan350mg/L.WhentheinfluentconcentrationofCODislowerthan350mg/LthepromotionofC/Nratiowhichintherangeof10-20isobviousandthepromotiondecreasesalongwiththeincreaseofC/Nratio.Theremovalefficiencyoftotalphosphorusachievehigherthan80%steadilywhentheinfluentconcentrationofCODintherangeof250-450mg/LevenindifferentinfluentC/Nratio.KeywordsUCTsystemCODC/NratiodenitrifyingphosphorusremovalbiologicalphosphorusremovalUCT1234.56COD7.、、pH8.COD400mg/L972%10.CODC/NUCTUCT.11.1UCT85L16L24L45L.9L/hHRT9hSRT=15dDODOI:10.13227/j.hjkx.2010.08.0118UCTCODC/N3.0~3.5mg/LDO0.5mg/L.40%~60%200%~250%100%~150%.1.、..1.2、、、N、P、pHCODC/N.1.A.B.C.D.1.2.3.4.5.6.7.1Fig.1SchematicdiagramofSUFRbiologicalphosphorusandnitrogenremovalsystem1Table1RawwaterqualityCOD/mg·L-1TP/mg·L-1TN/mg·L-1NH+4-N/mg·L-1pH100~6005.4~7.27.5~1027.2~100.96.5~7.52C/N5、10、15、20、25C/NCOD100~600mg/LCODC/N.2.1CODC/NCODC/N2.2C/NCODCODC/N5、10、15C/N=15510C/N2025.C/N2.2C/NTable2MaxvariationofPreleaseratesinanaerobicreactorofdifferentC/NratiosC/N510152025/mg·g·h-118.6425.5634.3440.8241.53C/N15CODCOD2CODC/NFig.2VariationofPreleaseratesinanaerobicreactoratvarietyofinfluentCODandC/NratiosCOD500mg/LC/N=5.C/N20CODTNC/NCOD.C/NTN.3TNC/N20COD500mg/LTN20mg/LTN7481313TNFig.3VariationofinfluentTNinanaerobicreactor.2.2CODC/N4C/N.COD100~600mg/LC/N=5.COD350mg/LC/N10、15、2025COD350mg/LC/N1015C/N20C/N251mg/g·h.4CODC/NFig.4VariationofPuptakeratesinanoxicreactoratvarietyofinfluentCODandC/Nratios5.CODC/NTN.COD350mg/L5C/N4CODC/N.C/N=5.CODCOD350mg/L4C/N=5C/N.COD350mg/L.5CODC/NFig.5VariationofnitrateinanoxicreactoratvarietyofinfluentCODandC/Nratios3PHBC/NPHB.CODPHBCODCODCOD300~400mg/LCOD60mg/LPHBPHB.24COD350mg/L.2CODPHBCOD50mg/LC/NPHBPHB.84818UCTCODC/N3CODC/NPHB1/mg·L-1Table3VariationofPHBinanoxicreactoratvarietyofinfluentCODandC/Nratios/mg·L-1COD/mg·L-1C/N=5C/N=10C/N=15C/N=20C/N=25100~200-109-98-102-97-98200~300-62-57-52-46-48300~400315121716400~5002341475156500~60037454858621PHBPHBPHB2.3CODC/N6C/NCOD.C/N510COD200mg/L3COD.C/N=5COD200mg/L24C/N=5、3.COD300mg/LPHBC/N15、20253COD300mg/LCODCODPHB.6CODC/NFig.6VariationofPuptakeratesinaerobicreactoratvarietyofinfluentCODandC/Nratios2.4CODC/NTP7C/NCODUCTTP.7C/N5102TPCOD250~450mg/L85%.C/N15、2025COD250mg/L450mg/LCOD250~450mg/LTP90%99.62%.COD250mg/L450mg/LC/N15、202560%.7CODC/NTPFig.7RemovalefficiencyofTPratesatvarietyofinfluentCODandC/Nratios7COD250~450mg/LC/NTP90%C/N=2599.62%.CODCOD11.COD450mg/L.COD250mg/LCODC/NTN.31C/NCODC/N15CODC/N20TN948131.2UCTCODC/N.COD350mg/LCOD350mg/LPHBCOD350mg/LC/N10~20.3COD250~450mg/LUCT80%TP99.62%COD.COD.1./J.200935835-38.2TemminkHPetersenBIsaacsSetal.RecoveryofbiologicalphosphorusremovalafterperiodsofloworganicloadingA.InPaperPresentedattheWaterQualityInternational’96IAWQ18thBiennialConferenceC.Singapore1996.23-28.3.C/NJ.2005253367-371.4MerzoukiMBernrtNDelcenesJPetal.BiologicaldenitrifyingphosphorusremovalinSBReffectofaddednitriteconcentrationandsludgeretentionTimeJ.WaterSciTech2001433191-194.5.J.20062213105-108.6.J.200630443-45.7.J.2007232284-287.8.J.200521722-25.9StagaardKChristenssonMLieEetal.Anoxicbiologicalphosohorusremovalinafull-scaleJ.WaterRes199731112719-2726.10.SUFRCODJ.2005281121-125.11.ASMsJ.20093051499-1505.0581