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CaO2071002CaO24!30mgLp~23CaO2300mgLFeSO47~2O150mgL60min100%.O611.62A1000-1565200304-0381-041..2.3..4.CaO25CaO2Fe2+O~.11.1CaO2!60%6FeSO47~2OC.R~2SO4C.R!10BB3R.UV-265p~S-3C20W.1.2!10BB3R430mgL.100mLCaO21molL~2SO4p~1minFeSO47~2OFeSO47~2O.1.3.1cm02003-01-20~003-011970-.234200312Journalof~ebeiUniversityNaturalScienceEditionVol.23No.4Dec.2003=1~!!0100%!0!.!10BB3R4480620510500nm!01.21.340.730.72.p~.22.1CaO2Fe2+~2O2O~.CaO2+2~+!Ca2++~2O21~2O2+Fe2+!Fe3++O~~+O~2Fe2++O~!Fe3++O~~3Fe3++~2O2!Fe2++~++~O24~O2+~2O2!O2+~2O+O~.5CaO2~2O2~2O2Fe2+O~Fe3+Fe3+~2O2Fe2+Fe2+~2O2O~O~.CaO2FeSO47~2Op~O~.2.22.2.1CaO2!p~23FeSO47~2O150mgL60minCaO21.1CaO22FeSO47H2OFig.1EffectofCaO2amountFig.2EffectofFeSO47H2Oamountonthedecolorizingrateonthedecolorizingrate1CaO2CaO2100mgL95.3%300mgL100%..2832003400mgL.O-+-2O2!-2O+-O27.CaO2-2O2O-CaO2-2O2-O2-O2+O-!-2O+O2O--2O2.CaO2300mgL.2.2.2FGSO47-2O!p-23CaO2300mgL60minFGSO47-2O2.2FGSO4.FGSO412.5%.FGS-O4FGSO47-2O50mgL91.1%-2O2FG2+O-.FGSO47-2O150mgL98.5%.200mgL.FGSO47-2O150mgL.2.2.3p-!CaO2300mgLFGSO47-2O150mgL60minp-3.3p-.p-1497%p-23100%p-4p-.p-O-FG!8.p-23.2.2.4!p-23CaO2300mgLFGSO47-2O150mgL4.3pH4Fig.3EffectofpHvalueonthedecolorizingrateFig.4Effectofreactivetimeonthedecolorizingrate42min81.7%60min100%..60min.2.3CaO23p-23CaO2300mgLFGSO47-2O150mgL60min1.3834CaO21CaO2H+FeSO4Tab.1ThedecolorizingrateofsomedyestreatedbyCaO2H+FeSO4systemmgL-1%!3098.5B3099.03R3099.210B3099.51CaO2100%.31CaO2!10BB3R4.30mgLp~23CaO2300mgLFeSO47~2O150mgL60min98%.2CaO2.1.M.1998.71-76.2.M.1987.116-122.3.M.2001.1-2.4METCALFEDDY.WasterwaterengineeringtreatmentdisposalreuseM.newYorkAnnArborSciencePublisherInc1979.302-304.5.J.1996421-23.6.J.200032218-20.7.~2O2-Fe2+#-J.199818123-25.8.FentonJ.200021593-96.DecolorizingTreatmentofwater-SolubleDyewastewaterusingCaO2ZHAlYon9-Cin9DlNGshi-wenYAOZi-huaWANGYin9-jinLlUGui-huaZHAOChun-xiaCollegeofChemistryandEnvironmentalScience~ebeiUniversityBaoding071002ChinaAbstractThedecolorizingtreatmentoffourwater-solubledyeswastewaterusingCaO2wasstudiedandtheeffectsofvariousaffectingfactorsonthedecolorizingrateofdyeReactiveOrange!wereinvestigated.There-sultsshowthattheappropriateconditionsdeterminedbytheexperimentsareasfollowingCaO2=300mgLFeSO47~2O=150mgL!=60minp~=23unilluminatedbyUVwhentheinitialcon-centrationofthedyeis30mgL.Undertheseconditionsthedecolorizingratecanreachtoabout100%.ThereforeCaO2isaneffectiveeconomicalsafenontoxicenvironmentalfriendlywatertreatmentreagentandpromisingindyewastewatertreatment.Keywordsperoxidecalciumdyewastewaterwastewatertreatmentdecolorization483!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!2003