1微电解法在油气田废水治理中的应用

:100128220(2001)0420351205,,(,637001):,.CODCr,.,CODCr,,.:;;;:X791:A1.,[1-6].CODCr,,NaCl,,.,.,,.,,,,.,.,.,.2211(1)(53).,1.212()45mm,780mm.60-80(),200mL,200mL,11,(200mL).(1%-3%).,H2SO4(98%)pH,,,,pH,pH8,Fe2+Fe3+,30min,:2001-04-02:(208):(1974),,,,.224()200112Vol.22No.4JournalofSichuanTeachersCollege(NaturalScience)Dec12001©1994-2007ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.(CODCr,CODCr).213,,pH[7]..21311pH,H2SO4pH(pHFe2+,),,20min.2,3.1(:mg/L)Table1Resultofwastewatertreatedwithcoagulation-sedimentationpHCODCrCl-16.5105522796.06.350.2451725371141504041.60.056.7253pHCODCrTable2CODCrofwastewaterfromJiao-Well53treatedwithdifferentpHpH1.01.52.03.04.05.0pH4.54.55.05.05.05.0CODCrmg/L588718789922938949CODCr(%)48.537.130.919.217.816.831pHCODCrTable3CODCrofwastewaterfromGaoke-Well1treatedwithdifferentpHpH1.02.03.04.05.0610pH5.55.55.55.55.55.5CODCrmg/L61374391699710101021CODCr(%)41.929.313.25.54.34.02,3,,CODCr.pH,pH,,,[H]Fe2+,,pH,,CODCr[7].pH,,,,253()2001©1994-2007ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.[7].21312CODCr,pH1-2,,,4,5.453CODCr3Table4CODCrofwastewaterfromJiao-Well53treatedwithdifferenttimet(min)7101520253045CODCrmg/L739686664654692715735CODCr(%)35.340.941.842.739.437.335.6:.51CODCrTable5CODCrofwastewaterfromGaoke-Well1treatedwithdifferenttimet(min)5101620253140CODCrmg/L956842742686606596581CODCr(%)9.420.229.735.042.643.544.145,,,,CODCr.,,,[H]Fe2+,,CODCr.,CODCr20min.,,CODCr,25min,Fe2+,(100%),CODCr,,,,,,CODCr,25min.21313,Fe/C,CODCr,,,.,,,,,Fe/C1-1.5.21314,.,,,.,,,,.,,60-80.353224,:©1994-2007ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.[4,7,8],.,.,;.,,,.:(Fe):Fe-2eFe2+E0(Fe2+/Fe)=-0.44V(C):2H++2e2[H]H2()E0(H+/H2)=0.00V.O2+4[H]+4e2H2O()E0(O2/H2O)=1.22V.O2+2H2O+4e4OH-()E0(O2/OH-)=0.41V.,,,,.,[H]Fe2+,;,.Fe2+Fe3+,Fe2+,pH,,Fe2+Fe3+,,.,,H2O2,OH,.4(1),(pH=1-2,T=20min,60-80,Fe/C1-1.5),,CODCr,.(GB8978-1996)[9].208.(GB8978-1996).,.(2)Fe2+,pH5,pH(H2O2/Fe2+),,.(3)(7-10d),,CODCr,,.,.(4)pH,.(5),,CODCr,,,453()2001©1994-2007ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.:[1],,.-[J].,1990,10(6):336.[2],.()[J].,1997,16(4):33.[3],,,.-[J].,1994,15(1):39.[4],,.[J].,1999,2:18.[5].-/[J].,1999,17(4):27.[6],,,.[J].,1999,25(4):243.[7],,.[J].,1993,19(3):135.[8],.[J].,1993,19(4):196-199.[9]GB8978-1996,[S].ApplicationofMicro-ElectrolysisProcessfortheTreatmentoftheOil/GasFieldWastewaterJIANGZhen2ju,ZHAOLi2zhi,CHENHong(CollegeofChemistryandChemicalEngineering,SWPI,Nanchong637001,China)Abstract:Thetreatmentoftheoil/gasfieldwastewaterwithmicro-electrolysisprocessaspretreatmentwasstudied.TheresultshaveindicatedthatthepretreatmentprocesscouldimprovebiodegradabilityofthewastewaterandreduceCODCrandcolorresultinginthebenefittothefollow-upcatalyticreaction.Keywords:micro-electrolysis;drillingwastewater;gas-fieldwastewater;wastewatertreatment553224,:©1994-2007ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.