多级AO耦合生物膜反硝化处理低CN值生活污水阚睿哲

A/OC/N100124A/OC/N、A/O。C/NA/O。C/N2～5CODCOD50mg/L。NH+4－NC/N=5A/ONH+4－N88．8%NH+4－N5mg/LC/NNH+4－N96．8%～99．6%98．7%。TNC/NC/N=3～5A/O5．4%、5．4%、9．7%TN。、、。A/[e-mail]agewithLowC/NRatiobyCouplingProcessMultistageA/OandDenitrifyingBiofilmKANRui-zheLIJunBIANWeiWANGMengWANGWen-xiaoZHAOXin-yanZHAOQingKeyLaboratoryofBeijingforWaterQualityScienceandWaterEnvironmentRecoveryEngineeringCollegeofArchitectureandCivilEngineeringBeijingUniversityofTechnologyBeijing100124ChinaAbstractStep-feedmultistageA/OprocesswasusedtotreatdomesticsewagewithlowC/Nanddenitrificationperformancewasenhancedbyaddingsodiumacetate．ToaddresstheproblemsofsludgebulkingandlowcarbonutilizationrateduringthetestthecouplingprocessofmultistageA/Oanddeni-trifyingbiofilmwasproposed．TheeffectsofC/NratioontheperformanceofthemultistageA/Oprocessandthecouplingprocesswerestudiedthesimilaritiesanddifferencesbetweenthebothwerecomparedandtheinfluenceofcarbontypeonsludgesettleabilitywasinvestigatedinbatchexperiments．TheresultsshowedthatwhentheinfluentC/Nwas2to5therewasnodifferenceintheremovalofCODofthetwoprocessesandtheeffluentCODwaslessthan50mg/L．ButtherewasdifferenceinremovalofNH+4－N．WhenC/Nratiowas5theremovalrateofNH+4－NofthemultistageA/Oprocesswas88．8%andthe·72·33120171CHINAWATER＆WASTEWATERVol．33No．1Jan．2017effluentNH+4－Nwashigherthan5mg/L．HowevertheC/NratiohadlittleeffectonthecouplingprocesstheremovalrateofNH+4－Nremainedataround96．8%to99．6%withtheaverageremovalrateof98．7%．TheremovalrateofTNofthetwoprocessesincreasedwiththeincreaseofC/NratiobutwhenC/Nratiowas3to5theremovalratesofTNofthecouplingprocesswere5．4%5．4%and9．7%higherthanthatofthemultistageA/OprocessandtheTNremovalrateofthecouplingprocessshowedalineargrowthtrend．Inadditionwhenthesubstratewassufficientsodiumacetateglucoseandstarchwouldnotcausefurtherdeteriorationofsludgebulking．KeywordsmultistageA/Odomesticsewagelowcarbontonitrogenratiobiofilmex-ternalcarbonsourcepostdenitrificationA/O、、、、1～3。C/N。4C/N＜3．4。5。67。。A/OC/N、A/O。11.1A/O12∶1、。90cm、60cm、60cm50cm324L270L。90L。45L。5、、DO＞2mg/L。3。22～25℃。1A/OFig．1Schematicdiagramofthree-stageA/OcoupleddenitrifyingbiofilmreactorA/O3SBR。20cm、20cm、25cm10L、、、。DOpHDO、pH。1.2A/O1。。1Tab．1Rawwastewaterqualitymg·L－1CODNH+4－NNO－2－NNO－3－NTN112．9～214．065．81～100．150～0．840～4．3885．10～122．33CODCOD。SBR、、COD300mg/L384．38、300、282．2mg/·82·331．watergasheat．comL114．64、43．87mg/LC∶N∶P=300∶30∶10。1.3N－1－－TNTOCCODCODMLSSSVDOWTWoxi330pHWTWpH3310。1.4A/OMLSS3000～3500mg/L1∶1∶150%12dHRT12h。C/N1～2TN。CODC/N2、3、4、5。SBRSVI=362．2mL/g、、25±1℃DO＜2mg/L6h35L50%。CODSVI。A/O。30%22～25℃C/N2、3、4、5C/N。22.1A/O2.1.1CODC/N2。、。CODC/NC/N2～5COD108．3～431．9mg/LCOD64．3%、75．6%、84．2%、86．6%COD50mg/L。。2C/NNH+4－N、COD、TNFig．2RemovalofNH+4－NCODandTNunderdifferentC/NratiosC/NCOD3C/NCODNO－3－NC/N=4COD。3C/NCODFig．3ProfileofCODconcentrationalongprocess2.1.2C/N4。C/NC/N=588．8%5mg/LSVI247mL/g。C/N·92·．watergasheat．comA/OC/N331NO－2－N。4C/NNH+4－N、NO－3－NFig．4ProfileofNH+4－NandNO－3－Nconcentrationalongprocess2.1.3TN2C/NTN23．7%、30．3%、47．9%、57．1%。4b、C/N2～4TN。C/N=5TNTN。1/3TNTN。2.1.4C/NSVIC/NSVI83、124、131、247mL/g。C/N5。A/O8。2.2SVI362．2mL/g。CODSVI5。5CODSVIFig．5InfluenceofcarbonsourcetypeonCODremovalandSVISBR2SBR3SVI5436、426mL/g35d182、228mL/g。SBR1SVI。SBR140dCOD·03·331．watergasheat．com81．6%SBR2SBR3COD80%。SVI。9。SVISBR1SBR2SVISBR310SBR3COD。2.3C/NCOD、NH+4－N、TN6。C/N3～5COD38．67、44．84、38．76mg/L50mg/L。C/NCODA/OCOD。6C/NCOD、NH+4－N、TNFig．6RemovalofCODNH+4－NandTNbycombinedprocessunderdifferentC/NratiosNH+4－NA/OC/N=3～598．4%、99．4%、98．3%。DO。C/NA/O。TNA/OC/N3、4、5TN5．4%、5．4%、9．7%。A/OTN。2．1．3A/OTNTNC/N5TNA/O2。TNCODTN＜5mg/L。SVI470．5mL/g154．2mL/g。A/OCOD、NH+4－NTN。2TNTab．2TNremovalrateoftwoprocesses%C/NA/O334．528．530．341．332．935．7451．144．147．958．648．653．3559．752．957．175．263．366．83①C/NA/OCODNH+4－NTNC/N。C/N=588．8%NH+4－N5mg/LTN47．9%57．1%SVI247mL/g。②、、、SVI。③C/NCOD·13·．watergasheat．comA/OC/N331NH+4－N96．8%～99．6%TNC/N。C/N=3～5TNA/O5．4%、5．4%、9．7%。1．D．2011．2GeSPengYQiuSetal．Completenitrogenremovalfrommunicipalwastewaterviapartialnitrificationbyap-propriatelyalternatinganoxic/aerobicconditionsinacontinuousplug-flowstepfeedprocessJ．WaterRes201455395－105．3．J．200929122465－2470．4．CODC/NJ．2005211219－23．5．J．2005256641－645．6．J．201162123471－3477．7CigginASOrhonDRossettiSetal．Short-termandlong-termeffectsoncarbonstorageofpulsefeedingonacclimatedorunacclimatedactivatedsludgeJ．WaterRes201145103119－3128．8．SBRD．2010．9EikelboomDH．ProcesscontrolofactivatedsludgeplantsbymicroscopicinvestigationM．LondonIWAPublishing2000．10．J．2015352448－456．1992－。[e-mail]櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆櫆2016－02－15269VonGuntenU．OzonationofdrinkingwaterPartⅠ．OxidationkineticsandproductformationJ．WaterRes20033771443－1467．10ChenWWesterhoffPLeenheerJAetal．Fluores-cenceexcitation-emissionmatrixregionalintegrationtoquantifyspectrafordissolvedorganicmatterJ．Envi-ronSciTechnol200337245701－5710．11GaoSZhaoZXuYetal．Oxidationofsulfamethox-azoleSMXbychlorineozoneandpermanganate—acomparativestudyJ．JHazardMater2014274258－269．12ChengXLiangHDi