ResearchonthepreparationofcompositeflocculantPFMS,anditsflocculatingcapacityLiuXiongcai1,ZhangYu2,ZhouJiti2,CaoTongchuan2,WangGuodong3(1.SchoolofChemicalEngineering,DalianUniversityofScienceandTechnology,Dalian116024,China;2.KeyLaboratoryofIndustrialEcologyandEnvironmentalEngineering,DepartmentofEducation,SchoolofEnvironmentalandLifeScience,DalianUniversityofScienceandTechnology,Dalian116024,China;3.LimitedCompanyofEnvironmentalEngineeringResearchandDesignInstitute,DalianUniversityofScienceandTechnology,Dalian116024,China)PFMS1,2,2,2,3(1.,116024;2.,,116024;3.,116024)[]FeSO4、MgOH2SO4PFMS,、、MgO。PFMS:30℃,n(ClO3-)∶n(Fe)=1∶6,n(H2SO4)∶n(Fe)=0.3,MgO20%~30%。、,:5NTU,75%,CODCr60%。[];;[]TQ314.253[]A[]1005-829X(2009)09-0041-04Abstract:Anewcompositeflocculant,PFMS,whichconsistsofferroussulfate(FeSO4),magnesiumoxide(MgO)andsulfuricacid(H2SO4),hasbeenprepared.Theeffectsoftemperature,dosageofoxidant,sulfuricacidandthemo-larratioofMgOonitsflocculatingcapacityareinvestigated,respectively.TheoptimumconditionsofthepreparationofPFMSareshownasfollows:thereactiontemperatureis30℃,themolarratiosaren(ClO3-)∶n(Fe)=1∶6,n(H2SO4)∶n(Fe)=0.3,andtheappropriateMgOsubstituteratiois20%-30%.Theproductshavebeenusedfortreat-ingthekaolinsimulatedwastewater,simulateddyestuffwastewaterandmunicipalsewage,respectively.Theresultsshowthattheturbidityisbelow5.0NTU,theremovalratesofcolorandCODCrarehigherthan75%,60%,respec-tively.Keywords:PFMScompositeflocculant;flocculatingcapacity;wastewatertreatment29920099IndustrialWaterTreatmentVol.29No.9Sep.,2009,〔1〕。(PFS)。PFS、,。,。〔2〕~〔4〕,,,,,,。,,,,(PFMS),。11.1FeSO4·7H2O(),MgO(),NaClO3(),H2SO4(95%~98%),,GF。DK-S24,JJ-1,JJ-4,LP2000-11,SP-722E,WMXCOD41——2009-09,29(9)。1.21.2.1PFMSFeSO4·7H2O,;H2SO4;MgO;NaClO3,;1h,。1.2.2500mL,,PFMSPFS。200r/min1min,30r/min10min,20min。22.1H2SO4PFS,PFS。,MgOPFMS,MgO。2.1.13mol/L、30℃、n(H2SO4)∶n(Fe)=0.3,(90%~110%),1h,。1。1,,。,99.49%。,。,,n(ClO3-)∶n(Fe)=1∶6。2.1.2H2SO4PFS3mol/L、30℃,n(ClO3-)∶n(Fe)=1∶6,H2SO4,1h,,PFSn(H2SO4)∶n(Fe)2。2,,。H2SO4,,,。n(H2SO4)∶n(Fe)0.3~0.4,(8%~16%)。2.1.3PFS3mol/L、n(ClO3-)∶n(Fe)=1∶6,n(H2SO4)∶n(Fe)=0.3,1h,,PFS3。3,,PFS。,。,,,。,,。,,。,HSO4-,H+,;,,〔5〕。,PFS。,30℃。2.1.4MgOPFMS30℃,MgOFeSO4(Fe+Mg3mol/L),。1h,,PFMSMgO4。〔6〕,B():B=n(OH-)/〔3n(Fe3+)+2n(Mg2+)〕。42——2009-09,29(9)4,MgO,。MgO35%,。,MgO30%,,≯30%。2.2MgOPFMS2.2.1,1h,136NTU,pH=8.44。MgOPFMS,10mg/L,MgO5。5,MgO20%,PFMSPFS。MgO20%,。MgO30%,5NTU,PFMS。2.2.2GF,GF100mg/L,0.829,pH=7。MgOPFMS10mg/L,MgO6。6,MgO。MgO30%,,80%。MgO30%,。,MgO30%,PFMS。2.2.3,45NTU,CODCr75mg/L,pH=7。MgOPFMS,,7。7,MgO30%,PFMSCODCr,PFSMgOPFMS,62%。3(1)PFMS,30℃,n(ClO3-)∶n(Fe)=1∶6,n(H2SO4)∶n(Fe)=0.3,MgO()20%~30%。(2)MgO30%,PFMSPFS,5NTU;PFMSPFS,80%;PFMSCODCrPFS,62%。(3)PFMS、、CODCr,30%,,。[][1].[J].,1999,15(2):1-4.[2],,.[J].,2006,26(7):7-10.[3]SemerjianL,AyoubGM.High-pH-magnesiumcoagulation-floccu-lationinwastewatertreatment[J].AdvancesinEnvironmentalRe-search,2003,7(2):389-403.[4]GaoBaoyu,YueQinyan,WangYan,etal.Colorremovalfromdye-containingwastewaterbymagnesiumchloride[J].JournalofEnvironmentalManagement,2007,82(26):167-172.,:PFMS43———————————————————————————————————————————————ResearchonscaleandcorrosioninhibitiontechniqueanditsapplicationtothewaterinjectionsysteminHonggangOilProductionPlantChengYaoli1,MaYuming1,ZhangBaoshan2,PengDawei3,XuGuohui3,YinLina3(1.CNOOCTianjinChemicalResearch&DesignInstitute,Tianjin300131,China;2.SouthwestPetroleumUniversity,Chengdu610500,China;3.ChinaPetroleumJilinOilfieldCo.,Jilin131301,China)1,1,2,3,3,3(1.,300131;2.,610500;3.,131301)[]、,,。,。,,。[];;[]TE357.6;TQ085+.412[]A[]1005-829X(2009)09-0044-04Abstract:ThecorrosionandscalingphenomenoninthewaterinjectionsystemofHonggangOilProductionPlant,JilinOilfieldisveryserious.Basedonsamplingandanalysis,thecausesofcorrosionandscalinginthesystemhavebeenstudied.Throughtheselectionofchemicalsandexperimentalevaluation,appropriatetreatmentprogramandchemicalsaredetermined.Therunningresultsshowthattheproblemofcorrosionandscalinginthewaterinjectionsystemissolvedeffectively,andnormalrunningofthesystemintheoilproductionplantisassured.Keywords:waterinjectioninoilfield;corrosionandscaling;sulfatereducingbacteria29920099IndustrialWaterTreatmentVol.29No.9Sep.,2009,,,。,、,,。、。,3,、26208。、,,。11.13(26、208、),152、168,168、152,1。:(1),,。(2)Ca2+、Mg2+,[5].[J].,2007,24(1):10-12.[6],,,.B[J].,2003,1(1):18-21.[](1981—),2006,。:13478695374,E-mail:lxc402@gmail.com。[]2009-05-25()44——