高铁酸盐预氧化絮凝除藻的实验研究

梁好,韦朝海,盛选军,易路景,梁运莲(华南理工大学环境科学研究所,广东广州510641)[],,,0.14mg/L1.4mg/L20mg/L40mg/L3;pH,pH5.0pH7.5pH10;,,10min,;,;,[];;[]TQ138.1+1[]B[]1005-829X(2003)03-0026-04ExperimentalresearchoftheremovingofalgaebypreoxidationwithferrateLiangHao,WeiChaohai,ShengXuanjun,YiLujing,LiangYunlian(EnvironmentalInstitute,SouthUniversityofTechnology,Guangzhou510641,China)Abstract:Inordertoobservetheeffectoftheremovingofalgae,theeffectingfactorsofalgaeremovalinlakesandreservoirsbypreoxidationwithferratearestudiedandcomparedwithprechlorination.Whenremovingalgaewithferrate,theferrateconcentrationbeing0.14mg/LcanimprovethePACefficiencyoftheremovingofalgaeevidently.Theefficiencyofremovingalgaeadding1.4mg/Lferratewith20mg/LPACisthreetimesthanthatofaddingPAC40mg/Lonly.Whentreatedwithwatercontainingalgae,theefficiencyofremovingalgaeispH5.0,higherthanpH7.5andhigherthanpH10.0.Prolongingthetimeofpreoxidationwithferrate,theefficiencyofremovingalgaeisimprovedalittle,butiflongerthan10min,theefficiencyoftheremovingofalgaeisalmostnotimproved.ThehumicacidcanhampertheeffectofremovingalgaewithPAC,butferratecaneliminatetheeffectofhumicacid.Theeffectofalgaeremovalwithferrateismuchbetterthanthatwithprechlorination,soferratecanbeusedtosubstituteforchlorineintheremovingofalgae.Keywords:preoxidationwithferrate;prechlorination;algaeremoval,,,:(-40mV);(),,,12,,3,,,4,,,,,5,(2.2V,0.7V),,6~8pH,11.1材料:,,99%10::,262003年3月第23卷第3期IndustrialWaterTreatmentMar.,2003Vol.23No.3,0.1mol/LNaOH,HClpH2,,:,,:,9.3107~1.03108L-1,27~28,36NTU,pH8.5,UV25413.3m-11.2方法,DBJ-6500mL(pH6mol/L6mol/LpH),300r/min,(PAC),300r/min1min,30min,1cm,,,,22.1高铁酸盐投加量对杀藻效果的影响12PAC(pH8.5,10min)图1高铁酸盐预氧化对沉后藻类去除效果的影响图2高铁酸盐预氧化对滤后藻类去除效果的影响1,,PAC,,,PAC,,,,,,,,,1.4mg/L(Fe),PAC20mg/L40mg/L3,PAC2,,Fe(OH)3,,,Fe(OH)3,,2.2pH对高铁酸盐除藻率的影响,,pH1pH,pH,,pH,pH3pH5,7.5,101.4mg/L,10min图3pH对高铁酸盐预氧化沉后水的除藻效果的影响3,1.4mg/L,,,pH,,,,2.2V,272003-03,23(3)高铁酸盐预氧化絮凝除藻的实验研究0.7VpH,,,,Fe(OH)3,,2.3作用时间对杀藻率的影响4PAC30mg/L,pH8.5图4高铁酸盐预氧化时间对沉后藻类去除效果的影响4,,,,,2.4水中腐殖酸对除藻率的影响,5PAC30mg/L,pH8.5,10min图5腐殖酸对除藻效率的影响5,,PAC,;,,7,:,,;,,2.5高铁酸盐预氧化与预氯化的除藻效果对比,,6(pH8.5,10minPAC30mg/L)图6高铁酸盐与氯气的用量对沉后水中藻类去除效果对比6,,,,,5.0mg/L(Cl2)0.84mg/L,,,,Fe(OH)3,3,,,,,,,28试验研究2003-03,23(3)王立立,刘焕彬,胡勇有,周勤(华南理工大学造纸与环境工程学院,广东广州510640)[],,,31,3~4,1.1m3/(m2h),CODCr97.37%82.28%,3.4mg/L6.94mg/LCODCr;[];;[]X799.3[]B[]1005-829X(2003)03-0029-04StudyoftheapplicationofbiologicalaerationfiltertothelowconcentrationdomesticsewagetreatmentWangLili,LiuHuanbin,HuYongyou,ZhouQin(CollegeofPapermakingandEnvironmentalEngineering,SouthChinaUniversityofTechnology,Guangzhou510640,China)Abstract:Themainobjectiveoftheexperimentsistostudytheinfluenceofgastoliquidratio,hydraulicandinfluentorganicloading,carbonandnitrogenmassratioandthebedmaterialheightonthevolumetricloadingofBAFoperatedunderloweraerationconditions.Theresultsshowthat,whenthegastoliquidratiois31,carbonandnitrogenmassratiois3~4andthehydraulicloadingis1.1m3/(m2d),theCODCrandtotalammonianitrogen(NH3-N)reductionsaveraged97.37%and82.28%respectively.CarbonandnitrogenmassratiohasmoreeffectontheCODCrvolumetricloadingthanontheNH3-N.ThehydraulicloadingshaslesseffectonNH3-Nremoval.Keywords:biologicalaeratedfilter;domesticsewage;volumetricloading,,,,,,,,,250mg/L,[][1],.[J].,1997,13(4):13-16[2].[J].,1996,12(5):19-22[3],,.[J].,2001,23(2):11-13[4],.[M].:,1999.63-64[5].[J].,1998,24(11):61-63[6]SharmaVirenderK.Potassiumferrate():anenvironmentallyfriendlyoxidant[J].AdvancesinEnvironmentResearch,2002,6(2):145[7],,,.[J].,1999,19(5):510[8]VirenderKS,etal.OxidationofammoniabyFerrate()[J].J.Environ.Sci.Health,1998,A33(4):635-650[9].[M].:,1986.[10],,.[J].,1999,31(6):26-28[](1965),2000,,:13602871105,Email:[e-mail][]2002-08-03292003年3月第23卷第3期IndustrialWaterTreatmentMar.,2003Vol.23No.3