高密度沉淀池的运行控制

1,2,3,2,1(1.,150090;2.,300040;3.,300384):,:;;,,:;;;;:TU991.23:B:1673-9353(2008)03-0031-03AnalysesonserviceconditionofDensadegXuZheng1,ZhaoJianwei2,SunYing3,LiuYang2,LiMingrui1(1.SchoolofMunicipalandEnvironmentalEngineering,HarbinInstituteofTechnology,Harbin150090,China;2.TianjinWaterworksGroupCo.Ltd.,Tianjin300040,China;3.DepartmentofEnvironmentalandMunicipalEngineering,TianjinInstituteofUrbanConstruction,Tianjin300384,China)Abstract:SomeimportantoperationalparametersofDensadegweremonitored,andrationalconditionsofoperationwerediscussed.Theresultsshowedthatconcentrationofsludgewatercouldbeestimatedbyturbidityrapidly.Thechemicaldosingandbackflowcouldbecontrolledandadjustedbasedonsettlingratioofsludgeinreactiontank,inletflowhadsignificanteffectoneffluentturbidity.Thesludgeflowcouldbereducedtothegreatestextentattheconditionofkeepingsolidatcertainamount.Keywords:Densadeg;servicecondition;sludgewater;recirculation;sedimentation()/4,960m3/h,2.0g/L1.5g/L,,,1111,,,1.52.5,0.74g/L,2.0g/L,1.5g/L,,,,,,,[1],132320086WATERTECHNOLOGYVol.2No.3Jun.2008,,,,,,,112,3.5g/L,,0.74g/L,1.0g/L,,1.33(),,300m3/h,960m3/h17.8m/h,300m3/h5.56m/h,,3.5g/L,,1.5g/L[2],,,,,113,,,028.7g/L,30m3/h,,5%;,,[3],,,,(15),,,,,114[2],,,[1],,11Tab.1Effectoffluxoneffluentturbidity/(m3h-1)/(m3h-1)/(m3h-1)/(gL-1)/NTU9507008450.86.867003005420.781.78,FeCl3,,;,PAM,5h300m3/h,0.6g/L,,2.4NTU,0.5g/L,,,300m3/h600m3/h,,,0.5mm12.67m/h[4],5.56m/h(300m3/h),;,,2323200862,,,,,,,,:[1].[M].:,2006.[2],,,.[M].:,1986.[3],,,.[J].,2007,1(5):56-57.[4].[M].:,2000.E2mail:[e-mail]:2008-03-18(30)21PAM,0.5mg/L4PAMFig.4ComparisonofefficiencyofPAMandactivatedsilicicacidasanaidtocoagulation26NTU,4,,,0.5NTU,4,,1.0NTU100%,,:,,:[1].[J].,2002,28(1):4-7.[2],.[J].,1998,14(6):33-34.[3].[M].:,1992.[4],.[M].:,1990.[5]HansonAT,CleasbyJL.Theeffectsoftemperatureonturbulentflocculation:fluiddynamicsandchemistry[J].JAWWA,1990,82(11):56-73.[6]MorrisJK,KnockeWR.Temperatureeffectsontheuseofmetal2ioncoagulantsforwatertreatment[J].JAWWA,1984,76(3):74-79.E2mail:[e-mail]:2008-05-123320086,:23