城市污水处理厂改良AAO工艺除磷效果影响因素分析及对策王社平

AAO20×104m3/d20106GB18918－2002B[1]。201347A20139。11.125mm10mm0.95g/cm3550m2/m325%5～6g/L4g/L。20×104m3/d8.27m/h。30min。1。20138－20144TPTPGB18918－2002A0.5mg/L。TP。1.220138－20144200。pH7.05～8.0616.0～26.2℃。1。1.3CODTN、NH4+-N、NO3--N、TP、PO43--P、SS[2]DO、ORP、pH。1211341.7100552.7100683.7100544.710021AAO、TPGB18918－2002A。、、、。、。AAOX799.3A1000-3770(2015)[e-mail]1A2/OFig.1FlowchartofmodifiedA2/Oprocess41320153Vol.41No.3Mar.,201581DOI:10.16796/j.cnki.1000-3770.2015.03.021TNNH4+-NTP480215～1352≤50240130～470≤10300145～1680≤106526.93～74.53≤154515.53～62.90≤564.16～20.53≤0.51Tab.1ActualinfluentqualityanddesigninfluentandeffluentqualityofwastewatertreatmentplantCOD/(mg·L-1)BOD5/(mg·L-1)ρ/(mg·L-1)SS22.1m(C)/m(N)、m(C)/m(P)2m(C)/m(N)、m(C)/m(P)TP。2m(C)/m(N)16.363.457.95m(C)/m(P)69.297.3440.72。m(C)/m(N)、m(C)/m(P)TP95%m(C)/m(N)、m(C)/m(P)m(C)/m(N)、m(C)/m(P)。2.23ORPDO。380dORP-295～-112mV-225mV。ORP-310mV。DO0.14～1.07mg/L0.47mg/LDO0.1～0.42mg/L0.21mg/L。DOTP。4NO3--NPO43--P。4NO3--N8.31～35.97mg/L20.7mg/LNO3--N。130%～150%。200%～300%TP200%TP[3]。480ORP。5PO43--PNO3--N。520139212302bm(C)/m(P)2m(C)/m(N)m(C)/m(P)TPFig.2Them(C)/m(N)andm(C)/m(P)inprimarysedimentationtankeffluentontheremovalrateofTP04080120160200020406080020406080100
/%t/dm(C)/m(P)

2am(C)/m(N)04080120160200048121620020406080100
/%t/dm(C)/m(N)

020406080100120-400-350-300-250-200-150-100-50
ORP/mVt/d3aORP3bDO3ORPDOFig.3ChangesofORPandDOcontentinbioreactorρ(DO)/(mg·L-1)020406080100012345



t/d41382NO3--NORP-147.8mV-187.3mV。123092SCOD。SCOD50～80mg/L1230SCOD29.12mg/L1230。2014220、228324ORP-358.8、-357.1、-285.3mVSCOD21.1、50.61、68.3mg/L220220。2.3HRT[4]。、1.83、5.03、8.22h。160×103m3/d200×103m3/dHRT。HRT1.5～2.0hHRT。2.420131120144、。ESSSSTP。62013122－201444SVI。6SVI328170220。ESSSS。TP。2.5。。。4bPO43--P4NO3--NPO43--PFig.4ChangesofPO43--PandNO3--Nconcentinbioreactorρ(PO43--P)/(mg·L-1)020406080100120140160048121620


t/d4a)NO3--Nρ(NO3--N)/(mg·L-1)020406080100120140160180010203040


 t/dρ(PO43--P)/(mg·L-1)

  048121620ρ5aPO43--Pρ(NO3--N)/(mg·L-1)

  048121620ρ5bNO3--N5PO43--PNO3--NFig.5ChangesofPO43--PandNO3--Nconcentalongthebioreactor6SVISS、TPFig.6EffectoftheSVIinthebioreactorontheremovalrateofSSandTP02040608010012014005010015020025030035030405060708090100
/%t/dSVI


AAO83。1tc=ΔqmρXV=YqVρSrρXV-Kd。tcYKdqVρSrρXΔqmV。4.2～5.53g/L4g/L15.64d20d。4。2.6TP[5]。7、TP。7TP2.13～7.1mg/L3.81mg/LTP9.11mg/L。TP16.84mg/L4.02mg/L7.5mg/L。TP。31。DONO3--NORP2。34、TP5TP。1。NO3--N。MLSS[6]。MLSS。。。。NO3--N。DO。2。DO。DONO3--NNO3--N。3。。。7、TPFig.7ChangesofTPconcentinwatercontrolwells,beforefinegridandinprimarysedimentationtankeffluent0204060801001201401600369121518

 
t/dρ(TP)/(mg·L-1)41384NITROGENANDPHOSPHORUSREMOVALWITHIMPROVEDREVERSEA2/OBIO-MEMBRANEPROCESSLiangZhu1,GuoYongfu1,2,WuWei2,3,BaiRenbi1（1.CenterforSeparationandPurificationMaterials&Technologies,SuzhouUniversityofScienceandTechnology,Suzhou215011,China;2.JiangsuKeyLaboratoryofEnvironmentalScienceandEngineering,Suzhou215011,China;3.JiangsuProvincialAcademyofEnvironmentalScience,Nanjing210029,China）Abstract:AnovelreverseA2/Omembraneprocesswasobtainedbyaddingsomefiltersandimprovingthecirculationwayofsludgeandinternalrecycle.TheimprovedA2/Oprocesshadthefunctionofnitrogen/phosphorusremovalandpropertiesofbio-membranetechnology.ActualsewagewastreatedinordertoinvestigatetheperformanceoftheremovalofnitrogenandphosphoruswiththeimprovedA2/Oprocess.Theresultsshowedthatitcontributedtothepromotionoftheremovalefficienciesofnitrogenandphosphorusandthestabilizationofthesystemwhenthecirculationwaysofsludgeandinternalrecyclewereimprovedandsomefilterswereaddedinthesystem.TheremovalefficienciesofCOD,NH4+-N,TNandTPwere84.9%,92.8%,70.9%and75.3%,respectively,intheconditionsoftheconcentrationofDObeing2.0mg/Landtheratioofinternalrecyclebeing200%.TheremovalofnitrogenandphosphoruswassignificantlyaffectedbytheconcentrationofDOandtheratioofinternalrecycle.Keywords：reverseA2/Oprocess;nitrogenandphosphorusremoval;nitrification;denitrificationINFLUENCINGFACTORSANDCOUNTERMEASURESFORPHOSPHORUSREMOVALBYIMPROVEDAAOPROCESSINAMUNICIPALWASTEWATERTREATMENTPLANTWangSheping1,2,LiLijun1,ChengXiaobo1,WangTongyue3,MaMinghua4(1.SchoolofEnvironmentalandMunicipalEngineering,Xi'anUniversityofArchitectureandTechnology,710055;2.Xi′anMunicipalEngineeringDesignandResearchInstituteCo.Ltd.,710068;3.SchoolofEnvironmentalScienceandEngineeringChang'anUniversity,710054;4.Xi'anNO.5WastewaterTreatmentPlant,710021:Xi′an,China)Abstract:TheimprovedAAOprocessinsomeXi'anFifthWastewaterTreatmentPlantwastakenastheresearchobject,andmainfactorsofinstabilityofphosphorusremovalandtheeffluentdifficulttoreachdischargestandardswereanalyzed.Theresultsshowedthatthefactorsincludingthepoorenvironmentofanaerobicperiod,longersludgeage,sludgebulking,returnsludg