化学生物絮凝工艺处理上海城市合流污水研究

2,,,,(,200092,E2mail:[e-mail]):2,(PAC),,,2.,.,CODCrTPSS70%6218%88%.82,.:;2;;:X703:A:025023301(2004)20078204:(863)(2002AA601320):(1975),,,Chemical2BiologicalFlocculationProcessforCombinedWastewaterinShanghaiHUANGTian2yin,XIASi2qing,YANGDian2hai,WUZhi2ping,ZHAOJian2fu(StateKeyLaboratoryofPollutionControlandResourcesReuse,TongjiUniversity,Shanghai200092,ChinaE2mail:[e-mail])Abstract:ThisresearchworkwascarriedoutinShanghaitoassessthetechnicalviabilityofimplementingchemical2biologicalfloccula2tionfortreatmentofcombinedwastewater,andpolyaluminiumchloridewasusedasflocculant.Becausethecooperatingactionofthechemicalandbiologicalfunction,theremovalefficienciesofthechemical2biologicalflocculationprocesswerehigherthanthatofthechemicalflocculationprocessatthesameflocculantdosage.Thisprocess,therefore,givesveryefficienttreatmentthatresultsincon2siderablesavinginthetotalspacerequiredbytheplant,whilemeetsthestandardsforeffluent.Underopticaloperationcondition,theeffluentaverageremovalefficienciesofCODCr,TPandSSwere70%6218%and88%respectively.Throughtheoxygenconsumingtestforeightsimulativesystems,thebiologicalfunctionwasprovedinthechemical2biologicalflocculationprocess.Thereasonforthehighefficiencyoftheprocesswasthenexplainedintheory.Keywords:combinedwastewater;chemical2biologicalflocculation;biologicalfunction;polyaluminiumchloride,,.25%30%,,[1,2].,,SS.,2.(),170m3/d.BOD5120mg/L,CODCr250mg/L,SS150mg/L.:CDDCr150mg/L,BOD560mg/L,SS40mg/L,NH32N30mg/L,TP1mg/L.2,,.2.11112,.50m3/d,1.,.,3mm,35min,,3,,,.2520046ENVIRONMENTALSCIENCEVol.25,Sup.June,2004转载[3],BOD5SSCODCrNH32NTP1.1Table1MonitoringMethodsforWaterQualityAnalysisCODCrTPBOD5MLSS1052hpHPHS225pHSS1052h,JPB2607.1000mL,;,,,.22.12:25%,MLSS2000mg/L,35min,(PAC)70mg/L.,2CODCrTPSS24.2,CODCr124mg/L266mg/L,176mg/L,CODCr50mg/L,70%.,CODCr.22CODCrFig.2CODCrremovalbychemical2biologicalflocculation32TPFig.3TPremovalbychemical2biologicalflocculation3,TP21002143mg/L,2122mg/L,0182mg/L,6218%.42SSFig.4SSremovalbychemical2biologicalflocculation4,SS70mg/L630mg/L,,217mg/L,SS18mg/L,88%.SS,.2.22,8,2.97中国科技论文在线中国科技论文在线(1),2CODCrTPSS70%6218%88%,.(2),,2.(3),2,.:[1]LevineDA,TchobanoglousG,AsanoT.CharacterizationoftheSizeDistributiononContaminantsinWastewaterTreatmentandReuseImplication[J].J.WaterPollut.ControlFed.,1985,57(7):805816.[2]degaardH.Norwegianexperienceswithchemicaltreatmentofrawwastewater[J].Wat.Sci.Tech.,1992,25(12):255264.[3].,[M].:,1997.18中国科技论文在线