多级AO工艺的水力流态特性及快速启动研究张智

A/O400045NaClA/O。HRT6、8、10hN4．1～4．6Pe7．1～8．1HRT。13d、、CODGB18918—2002A。A/OX703C1000－4602201301－0088－05HydrodynamicCharacteristicandRapidStart-upofMultistageA/OReactorZHANGZhiJINKeCHENJie-yunZHAOQingYAOJing-meiLIShu-yangSchoolofUrbanConstructionandEnvironmentalEngineeringChongqingUniversityChongqing400045ChinaAbstractInclearwaterthehydrodynamiccharacteristicofmultistageA/OreactorwasstudiedbythepulseresponsemethodusingNaClasthetracer．Accordingtotheexperimentresultstheoriginalstructureofthereactorwasmodifiedtoensureoptimumflowpatterninthereactor．TheresultsofflowpatternstudyaftermodifyingthereactorshowedwhentheHRTwas6h8hand10htheresidencetimedistributionofthereactormetthereactordesignrequirements．Nvaluewasbetween4．1and4．6Pevaluewasbetween7．1and8．1theflowpatternwasbetweenplugflowandcompletelymixedflow．ThedeadareawassmallandincreasedwithHRT．Inadditiontherapidstart-upofthemultistageA/Oreac-torwascarriedoutbysludgeinoculationfor13d．Theformedsludgehadacompactstructureanexcel-lentsettleabilityandanabundanceofmicrobialpopulations．TheeffluentCODmetthefirstclassAcrite-riaspecifiedinDischargeStandardofPollutantsforMunicipalWastewaterTreatmentPlantGB18918－2002andthereactorhadahighcapacityfornitrogenandphosphorusremoval．KeywordsmultistageA/Oprocesshydrodynamiccharacteristicresidencetimedistribu-tionrapidstart-up2009ZX07315－002CDJXS12210001·88·29120131CHINAWATER＆WASTEWATERVol．29No．1Jan．2013A/OC/N1。A/OA/O、AOAO2。A/OA/O、、3～5。A/O。A/O、。NaClA/OA/O。11.11。A/O××=720mm×660mm×1000mm30cm330LA/OAO2∶3。A/OHRT8h。500mm60°850mm90L、。。1A/OFig．1SchematicdiagramofmultistageA/Oreactorsystem1.21.2.1NaCl。300mLNaClNaCl100g15minNaCl3NaCl。xμS/cmNaClyg/Ly=0．000521x－0．00395r=0．9999。RTDC—θCC=Ct/C0C0θθ=t/HRTtHRT。N、PeVd6。1.2.2AO50LMLSS3500mg/LDO1～2mg/L78h。10mL。、40%100%8MLSS1500mg/LAOA/O100%DO1．5～2．5mg/L。MLSS2000mg/LSV3020%CODGB18918—2002A、。1.3HACH－·98·．watergasheat．comA/O291HQ14d。COD150～276mg/L208mg/LTN52～68mg/L60mg/LNH3－N47～62mg/L55mg/LTP4．3～5．4mg/L4．9mg/L。。。22.1C—θ21。2HRTC—θFig．2C－θcurvesatdifferentHRT1Tab．1ResultsoftracerstudyHRT/ht/hσ2NPeVd/%65．80．7081．41．13737．4287．30．6101．61．70333．5465．50．2174．68．0547．5787．70．2414．17．13211．04109．40．2334．37．42216．192.213d3d10d。SV30MLSSSV30＞20%MLSS2000mg/L。CODCOD＜50mg/LGB18918—2002ATNTPTN50%TN30mg/LTP80%20%3。TNSRTTNTP。3TNTPFig．3RemovaleffectofTNandTP、。33.12C—θC—θHRT68hN1．4、1．6Pe1．137、1．703。·09·291．watergasheat．com、。。20cm×4cm51cm70cm×3cm51cm。3.223HRTHRT6、8、10h。313HRTt5．5、7．79．4hσ20．217、0．241、0．233。。NN。N=1CSTRN→∞PFR。PePe→0CSTRPe→∞PFR8。1HRTN4．1～4．6。9Pe＞50Pe＜55≤Pe≤50。PeHRTPe7．1～8．1。NPe。HRT6～8hNPeHRT8hHRT。。7．57%～16．19%。1HRTHRT。3.310mL。DO1～2mg/L、DO1．5～2．5mg/L。100%100%。4①HRT6、8、10hN4．1～4．6Pe7．1～8．1HRT。②13d、、CODGB18918—2002A。1．A/OJ．20063717－9．2．A/OJ．20032648－10．3．J．200319432－36．96·19·．watergasheat．comA/O291。②DO0．5～2mg/L。③FeCl3、PAM40、0．2mg/L2．0min、2．5minVTP0．5mg/L。1．A－A2/OJ．20083112150－152．2．J．2009251316－19．3．A2OC/NJ．200859123126－3131．4．C/NJ．2005253367－371．5．J．1999203283－286．6．CarrouselD．2008．1963－、、、、。[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2012－06－19914．A/OJ．200725611－13．5．A/OJ．201028245－48．6．ABRHRTJ．200829392－94．7．J．200925492－95．8．J．2006221554－57．9．J．2007299644－647．1960－、。[e-mail]2012－06－10·69·291．watergasheat．com