不同挂膜方式填料成膜过程及其强化反硝化效能谭阳

112311231231．2141222．2141223．215009SPＲ－1+。/97%94%。30%++90%30．9%47．4%。90%。X703A1000－[e-mail]ssandEnhancedDenitrificationCharacteristicsofSuspendedCarriersunderDifferentCultivationStrategiesTANYang1WANGShuo123XUQiao1ZHANGGuang-sheng123LIJi1231．SchoolofEnvironmentandCivilEngineeringJiangnanUniversityWuxi214122China2．JiangsuKeyLaboratoryofAnaerobicBiotechnologyWuxi214122China3．JiangsuCollaborativeInnovationCenterofWaterTreatmentTechnologyandMaterialsSuzhou215009ChinaAbstractInordertoenhanceTNremovalthebiofilmformationprocessofSPＲ-1suspendedcar-rierunderanoxicconditionwasstudied．ThebiofilmformationcharacteristicsofsuspendedcarriersystemandthecombinedsystemofsuspendedcarrierandactivatedsludgewerecomparedandanenhancedTNremovalmethodbasedonanoxicbiofilmwasproposed．Whenthebiofilmformationofthesuspendedcar-rierunderanoxicconditionwasperformedbybiofilmformationunderaerobicconditioncombinedwithrapidsludgedischargethebiomassonthesuspendedcarrierobviouslyincreasedandthetotalamountofextracellularpolymericsubstancesEPSandprotein/polysaccharidesPN/PSratiobothincreasedwhichshowedthatthebiofilmformationofthesuspendedcarrierunderanoxicconditionhadastablestructure．TheremovalratesofnitratenitrogenandTNwere97%andover94%respectively．Theen-·03·32720164CHINAWATEＲ＆WASTEWATEＲVol．32No．7Apr．2016hanceddenitrificationefficiencyofthecombinedsystemwasmoresignificant．Thetimeofachievingthenitratenitrogenremovalrateof90%bycarriersinaerationtankplusactivatedsludgeandcarriersculti-vatedinlaboratoryplusactivatedsludgedecreasedby30．9%and47．4%respectively．Afterthein-creaseofnitrateloadingrateininfluentthetimeofachievingthenitratenitrogenremovalrateof90%bythecombinedsystemdecreasedtosomeextentwhilethatbythesuspendedcarriersystemincreasedslight-ly．Thecombinedsystemshowedbetterdenitrificationcapacityathighnitrateloadingratehoweverthesuspendedcarriersystemwasmoresuitableforlownitrateloadingrate．KeywordssuspendedcarrierbiofilmformationunderanoxicconditiondenitrificationextracellularpolymericsubstancesEPS。、、、、、1。、。MBBＲ2MBBＲ、、3～6。MBBＲ、、78。MBBＲ、3MBBＲ9MBBＲ。。。MBBＲ1011+MBBＲ。11.116cm23cm5L30%。1。MMMMR1R2R3R41Fig．1Schematicdiagramofexperimentalset-up1.21.2.1①SPＲ－12∶124h1。②4。Ｒ1+Ｒ2Ｒ330dＲ430d+。24h。15～20℃。·13·．watergasheat．com3271Tab．1ComponentsandconcentrationsofsyntheticwastewaterCOD/mg·L－1NH3－N/mg·L－1NO－3－N/mg·L－1TP/mg·L－1pH300～50020～300．5～12～46．4～7．8300～5000．1～0．520～302～46．3～7．51.2.2。、30%。1.2.3COD、NO－3－N、MLVSSAPHADOWTWEPS－NaOH1213。SPＲ－1Lundar。TSTS=G1－G2/170～80℃G11mol/LNaOH1460min10minG2。VSVS=TS×W2G0105℃G3500℃G4W=G4－G0/G3－G0。22.1、2a10dＲ12bＲ22c2dＲ32eＲ42f。abcdef5滋m2Fig．2Biofilmmorphologyofsuspendedcarriersduringformationprocess2.2Ｒ1Ｒ2Ｒ3Ｒ43Ｒ1Ｒ2。5d。5dＲ1Ｒ484．227．9mg/gＲ2Ｒ3103．143．8mg/g。Ｒ2Ｒ3。R1Ｒ２Ｒ３Ｒ４t/d120051015202530/（mg·g－１）100806040203Fig．3BiomassvariationsofsuspendedcarriersinＲ1toＲ42.3EPSEPSEPSＲ1Ｒ4Ｒ2Ｒ3+·23·327．watergasheat．com4。EPS。R1Ｒ２Ｒ３Ｒ４t/d100051015202530EPS/（mg·g－１ＳＳ）806040204EPSFig．4EPSconcentrationsofsuspendedcarriersinＲ1toＲ420Ｒ3Ｒ4EPSEPSEPSEPSEPS。Ｒ3Ｒ4EPSEPS－EPS。EPS5Ｒ1～Ｒ4PN/PS5dPN/PS。5dEPS15。EPSPN/PS。EPSPN/PS。20Ｒ2PN/PSEPS1617。t/d4051015202530PN/ＰＳ321R1Ｒ２Ｒ３Ｒ４5EPS/Fig．5PN/PSratioofEPSinsuspendedcarriersinＲ1toＲ42.4NO－3－NTN4NO－3－NTN6。t/d555045403530252015105051015202530/(mg·L-1)R1Ｒ２R３Ｒ４a.t/d605040302010051015202530/(mg·L-1)R1Ｒ２R３Ｒ４b.6NO－3－NTNFig．6NitrateandTNremovalefficienciesinＲ1toＲ4·33·．watergasheat．com327。6Ｒ25d。5dＲ1～Ｒ497%94%。Ｒ1～Ｒ44。2.5Ｒ1～Ｒ4790%30．9%、29．4%、16．9%47．4%。18。20Ｒ1Ｒ490%179．7147．4min124．891．7minＲ2Ｒ3133．4135．2min176．5166．2min。35302520151050NO3-N/（mg·L-1）-601201802403005d１０d１５d２０d25dt/mina.R140302520151050NO3-N/（mg·L-1）-501005d１０d１５d２０d25d35150200250300t/minb.R240302520151050NO3-N/（mg·L-1）-501005d１０d１５d２０d25d35150200250300t/minc.R3302520151050NO3-N/（mg·L-1）-501005d１０d１５d２０d25d35150200250300t/mind.R47Fig．7CharacteristicsofnitrateremovalinＲ1toＲ43①+43．8mg/g。②EPS/EPSEPSEPS。③97%94%+。Ｒ1～Ｒ490%30．9%、29．4%、16．9%47．4%。④90%·43·327．watergasheat．com。1．J．2010538－41．2．J．20113725－8．3．J．200732S1243－245．4ChenSSunDZChungJS．Treatmentofpesticidewastewaterbymoving-bedbiofilmreactorcombinedwithFenton－coagulationpretreatmentJ．JHazardMater20071441577－584．5WangSＲaoNCQiuＲetal．PerformanceandkineticevaluationofanaerobicmovingbedbiofilmreactorfortreatingmilkpermeatefromdairyindustryJ．Biore-sourTechnol2009100235641－5647．6Moreno-AndradeIBuitronGVargasA．Effectofstar-vationandshockloadsonthebiodegradationof4-chloro-phenolinadiscontinuousmovingbedbiofilmreactorJ．ApplBiochemBiotechnol20091581222－230．7McQuarrieJPBoltzJP．MovingbedbiofilmreactortechnologyprocessapplicationsdesignandperformanceJ．WaterEnvironＲes2011836560－575．8．J．2010361236－39．9．MBBＲJ．201026271－73．10．－AMBBＲ－J．2009371203－1208．11．J．200638111831－1834．12LiangZWLiWHYangSYetal．Extractionandstructuralcharacteristicsofextracellularpolymericsub-stancesEPSpelletsinautotrophicnitrifyingbiofilmandactivatedsludgeJ．Chemosphere201081626－632．13AdavSSLeeDJ．ExtractionofextracellularpolymericsubstancesfromaerobicgranulewithcompactinteriorstructureJ．JHa