HRT对多级AO悬浮填料组合工艺脱氮除磷的影响陈杰云

HＲTA/O+12323232341．4011202．4000743．4000744．300381A/O+HＲTCOD、NH3－N、TNTP。HＲT8hCOD、NH3－NTN《》GB18918—2002ATP75%。SND。HＲT。A/[e-mail]ntionTimeonNitrogenandPhosphorusＲemovalinMultistageA/O+SuspendedCarrierCombinedProcessCHENJie-yun1YUWei-wei23DUBang-hao23YANGLun23ZHUJia-yue23WEIXun41．ChongqingYubeiDistrictMunicipalConstructionEngineeringQualitySupervisionStationChongqing401120China2．KeyLaboratoryofHydraulicandWaterwayEngineeringofMinistryofEducationChongqingJiaotongUniversityChongqing400074China3．SchoolofＲiverandOceanEngineeringChongqingJiaotongUniversityChongqing400074China4．NorthChinaMunicipalEngineeringDesignandＲesearchInstituteCo．Ltd．Tianjin300381ChinaAbstractThemultistageA/O+suspendedcarriercombinedprocesswasappliedtotreatlowcar-bonsourcedomesticsewageandtheeffectofhydraulicretentiontimeHＲTonchemistryoxygende-mandCODammonianitrogenNH3－NtotalnitrogenTNandtotalphosphorusTPremovalefficiencywasinvestigated．TheexperimentalresultsshowedthattheeffluentconcentrationsofCODNH3－NandTNcouldsteadilyachievethefirstclassAcriteriaspecifiedinDischargeStandardofPollu-tantsforMunicipalWastewaterTreatmentPlantGB18918－2002．HowevertheremovalefficiencyofTPwasrelativelypoorwithremovalrateoflessthan75%．AnoxicmicroenvironmentconditionformedbybiofilmonsuspendedcarrierwasinfavorofsimultaneousnitrificationanddenitrificationSNDsothenitrogenremovalefficiencywasbetterthantraditionalactivatedsludgesystem．Thisprovidesatheoretical·13·33920175CHINAWATEＲ＆WASTEWATEＲVol．33No．9May2017basisforselectingsuitableHＲTforlow-carbonsourcesewagetreatment．KeywordsmultistageA/Osuspendedcarrierlowcarbonsourcehydraulicretentiontimesimultaneousnitrificationanddenitrification12、。A/O、、、、、3～5。、6。7。SND8。pH9。10。A/O+HＲTCOD、NH3－N、TNTPHＲT。11.1。COD215～240mg/LNH3－N35～42mg/LTN40～47mg/LTP3．8～4．2mg/LpH6．8～7．9。、。、A/O+1。750mm×750mm×1000mm393L720mm×660mm×1000mm332L70cm。AO。1m3/d500mm60°850mm、。。1A/O+Fig．1FlowchartofmultistageA/O+suspendedcarriercombinedprocess1.2KaldnesK325、12mm500m2/m3950kg/m3、11。1.3CODMLSSNH3－NTNTP。1.45∶3∶22∶3DO0．5、1．01．5mg/L40%。100%20～25℃15d。HＲT4、6、8、1012h·23·339．watergasheat．com。HＲT12hHＲT4h。22.1HＲTCODHＲTCOD2。HＲT10h12hCOD20mg/LCODCODHＲT6h8hCOD40mg/L85%HＲT4hHＲT8h2000mg/LMLSSMLSS35%1300mg/LCOD80%1213。。COD。2HＲTCODFig．2EffectofHＲTonCODremoval2.2HＲTNH3－NTNHＲTHＲT＞8hNH3－NTN《》GB18918—2002A3。HＲT10h12hNH3－N1．2mg/L97%HＲT8hNH3－N2．94mg/L91．67%HＲT6hNH3－N70%、14HＲT4hNH3－N60%。3HＲTNH3－NTNFig．3EffectofHＲTonNH3－NandTNremovalHＲT4hTN28mg/L40%HＲTTN。HＲT6h8hTN2011．93mg/LNO－2－NNO－3－N。10h12hTN75%81．4%TN。·33·．watergasheat．comHＲTA/O+3392.3HＲTTPHＲTTP75%TP。HＲT4hTP2．3mg/L45．24%TPHＲT6hTP1．8mg/L53．16%HＲT8、1012hTP63．92%、69．54%72．77%。COD。3①A/O+HＲT。HＲT＞8hCOD、NH3－NTN《》GB18918—2002ATP。②TN。。③HＲTA/O+HＲT8h。HＲTHＲT。1．J．20103611125－128．2．J．2013762013－2018．3．J．200929122465－2470．4．A/OJ．201131101644－1650．5CaoGWangSPengYetal．Biologicalnutrientremov-albyapplyingmodifiedfourstep-feedtechnologytotreatweakwastewaterJ．BioresourTechnol20131281604－611．6．J．201329550－54．7．J．201131419－22．8GonzalezBCSpinolaALLamonAWetal．Theuseofmicrosensorstostudytheroleoftheloadingrateandsurfacevelocityonthegrowthandthecompositionofni-trifyingbiofilmsJ．WaterSciTechnol20116481607－1613．9．J．20123811－5．10WuGNielsenMSorensenKetal．Distributionsandactivitiesofammoniaoxidizingbacteriaandpolyphos-phateaccumulatingorganismsinapumped-flowbiofilmreactorJ．WaterＲes200943184599－4609．11．J．201033S1321－326．12．J．20143562230－2235．13．J．20126124553－4558．14．－J．201234239－44．1984－。[e-mail]2017－01－13·43·339．watergasheat．com