化学法处理高浓度含钒碱性工业废水曾小明

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Chemicaltreatmentofhighlyconcentratedvanadium-containingindustrialwastewaterZengXiaoming1,2,LiLingpu1,ShuHui1,ZhaoKun1,SiShihui1(1.SchoolofChemistryandChemicalEngineering,CentralSouthUniversity,Changsha410083,China;2.ProductQualitySupervisingExaminationInstituteofHunanProvince,Changsha410007,China)1,2,1,1,1,1(1.,410083;2.,410007)[],:——。、pH、、pH、。,,0.001g/L,。[];;;;[]X703.1[]B[]1005-829X(2009)07-0051-03Abstract:Aimingatthecharacteristicsofthehighlyconcentratedvanadium-containingindustrialwastewater,thebesttreatmentmethod,reduction-neutralization-flocculationprocesshasbeenobtainedbymeansofmanycomparisontests.Theeffectsofthefactors,suchasthedosageofreducingagent,thebestpHofreductivereaction,reductivereactiontime,pHofneutralizationandprecipitation,coagulantaidsetc.ontheresidualvanadiuminwastewaterarediscussedindetail.Theresultsshowthatundertheoptimalconditions,thevanadium-contentinthetreatedwaterisbelow0.001g/L,andtheeffluentwaterreachesthenationalwastewaterdischargestandard.Keywords:vanadium;reduction;neutralization;flocculants;wastewatertreatment,、、。,,(),,,、,、,,〔1〕。,,。,。,〔2-8〕:、、、、、。。,:、、〔9〕、〔10〕、〔11〕、、、〔12〕。:NaOH、〔13〕、Na2CO3。,0.2g/L〔14〕。。—,,、。1:、、、PAM()、、、、、、、、、、,。,[](20475065)29720097IndustrialWaterTreatmentVol.29No.7Jul.,200951——2009-07,29(7)4pHpH788.599.510/(g·L-1)0.08980.06940.04230.01220.01190.0115,pH9,9.5g/LV5+,10%BO33-,5%CO32-,16.5g/LK+,12.3g/LNa+,:。2、、、——。,;,CO32-Ba2+,,、;,。、——。2.1——,,V()V(),Fe2+Fe3+,Fe3+。V2O5VO2VO2·xH2O〔15〕。pH9,Fe(OH)2Fe(OH)3。,,,,。PAM,。,PAM,〔16〕,。1。2.2100mL,20%pH1.9,,n(Fe)∶n(V)FeSO4·7H2O,30min,20%NaOHpH9,30min,,1。1,,,n(Fe)∶n(V)=4。2.3pH100mL,20%pH,,n(Fe)∶n(V)=4∶1FeSO4·7H2O,30min,20%NaOHpH9,30min,pH,2。2,,,pH1.0,。,。pH,。,pH,pH,,pH2.0,pH,,pH2。2.4100mL,20%pH2,,n(Fe)∶n(V)=4∶1FeSO4·7H2O,,20%NaOHpH9,30min,,3。3,,,,,,;30min,,,30min。2.5pH100mL,20%pH2,,n(Fe)∶n(V)=4∶1FeSO4·7H2O,30min,20%NaOHpH,30min,pH,4。4,pH,,pH9,。Fe2+,pH6.64,PAMNaOHFeSO4·7H2OH2SO411n(Fe)∶n(V)1∶12∶13∶14∶15∶16∶1/(g·L-1)1.22320.56530.09320.01230.01180.0110:GB3283—1987〔17〕。3/min0306090120/(g·L-1)1.6530.01260.01150.01070.01052pHpH1.01.52.02.53.0/(g·L-1)0.01050.01160.01280.06230.099252——2009-07,29(7)pH8.90,pH9,pH,Fe2+,,;pH9,Fe2+,pH,,pH9。2.6,—(V<0.001g/L),。,100mL—,2h,,。,,。。PAM,,。〔16〕4mg/LPAM。,:25min,,,。。2.7,:pH2,30min,n(Fe)∶n(V)=4∶1,pH9,,4mg/L。,,5。5,,,,0.001g/L,pH7~9,,。3(1)——PAM,,。(2):pH2,30min,FeSO4·7H2On(Fe)∶n(V)=4∶1,pH9,,4mg/L。(3)PAM,,。[][1].[J].,1996(3):62-64.[2].[C].:1998:57-63.[3],,.V2O5[J].,1994(1):36-38.[4]CoriqlianoF,GreenBR,WyetheJP,etal.RecoveryofvanadiumfromSolidResiduesofThermoelectricPowerPlants..ProcessforAcidAttack,OxidationandSeparationonCationExchangeResins[J].RivistadeiCOMBUSTIBILI,1983,37(4/5):126-130.[5],,,.[J].2007,24(6):20-23.[6].:,86106414[P].1986.[7]JungCH,.()[J].,1995(1):58-59.[8]CarpentierW,SandraK,deSmetI,etal.MicrobialreductionandprecipitationofvanadiumbyShewanellaoneidensis[J].Ap-pliedandEnvironmentalMicrobiology,2003,69(6):3636-3639.[9].[J].,1994,12(4):6-9.[10].[J].,1993(5):62-64.[11].SO2[J].,1989(9):14-16.[12].[J].:,1992,13(6):12-16.[13].[J].,2002,33(1):43-44.[14],,,.[J].,2007,17(2):142-144.[15],.—[J].,2002,22(3):165-168.[16],.PAM[J].,2006,26(1):38-39.[17]GB3283—1987[S].512345/(g·L-1)0.000990.000970.000980.000980.00097pH8.58.38.48.48.3[](1968—),1989,,。E-mail:zengxiaominglove@sina.com。[]2009-03-21(),:!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!,、。,,;,;,,。———,,,.CN101254971··53——

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