高浓度超稠油乳化段废水前处理工艺研究

:2001-02-27:/0(96-909-01-03-03):(1964-),,,1郭书海1,白玉兴2,张海荣3,孙铁珩3,曲久辉1(1.,100085;21,124002;31,110015):,,:¹,;º,,COD,,80%;,:99%,98%,COD86%800t,:;;;;;:X785:A:1001-6929(2002)01-0001-04StudyonPretreatmentProcessofSuperViscousOilEmulsionWastewaterGUOShu-hai1,BAIYu-xing2,ZHANGHai-rong3,SUNTie-heng3,QUJiu-hui1(1.StateKeyLaboratoryofEnvironmentalAquaticChemistry,ResearchCenterforEco-EnvironmentalScience,ChineseAcademyofSciences,Beijing100085,China;2.EnvironmentalEngineeringCompany,LiaoheOilfield,Panjin124002,China;3.InstituteofAppliedEcology,ChineseAcademyofSciences,Shenyang110015,China)Abstract:Systematicstudywasconductedonfundamentalcharacteristicsandpretreatmentprocessofsuperviscousoilemulsionwastewater.Itwasshownthatthetechnicalkeyspointsare:¹adoptingproperprocessparametersforoilseparationtoeffectivelyseparatethecrudeoilandre-sidualsinthewastewater,andºadoptingsuitableflocculationprocesstoguaranteetheeffluentwaterqualityfromairfloatationandminimizemineraloil,residualandCODfrompretreatmenteffluent.Theprocessoflow-loadingoil-separationprecipitationandhigh-loadingdissolvedairflocculation(DAF)wasthusproposed.WithlongerhydraulicresidenttimeinPrecipitationTank,therecoveryrateofcrudeoilinthewastewatercanbe80%andtheremovalratesofmineraloil,residualandCODofsecondaryairflotationcomplexprocesscanbe99%,98%and86%re-spectively.Theprocessandparameterscanbeappliedfordesignof800tPdwastewaterplantandtheoperationcanbestablyandreliably.Keywords:viscousoil;oilproductionwastewater;pretreatment;oilseparation;airflotation;flocculant,,,90%,[1-2],,,,,[3],,[4-6],,,,,,,,,,800t,5%,,,,9919%,,[7-8],800m3151ResearchofEnvironmentalSciencesVol.15,No.1,2002DOI10.13198/j.res.2002.01.3.guoshh.001,111111111,;C,H,SN[9-10]11112a.(55e),1000mL,48h,,,:¹,pH,1810Ca2+,Mg2+,Fe2+Fe3+,Cl-SO42-;º,CODBOD5b.,10~15,45e,,,,c.,QZ201,SS,COD11211211,40cm,200cm5,40h,1h,,20,100180cmSS()COD11121230h,ZFT1Fig.1Schematicdiagramofexperiment(PAC)(Alum)(PFS)(CFA)(ASA);(CPAM,PAM,HPAM)CPAM180,37%,HPAMPAM,(HD)10%,15%,20%,25%,30%,1150~1400-(ADAEM),240,47%2211,(Q20=019976gPcm3),(M100=120416mm2Ps),(48e),,30%,,1gPcm3,,11Table1AnalysisresultsofpetroleumqualityandcomponentQ20P(g#cm-3)PeMP(mm2#s-1)P%P%80e100eCHSN0.9976485591.61204.629.32.80.2920.687.0811.030.510.461212,2(pH618),[11],,COD,,,,,,,[12],,2152Table2InfluentqualityofproducedwatermgPLCa2+Mg2+Fe2+Fe3+Cl-SO42-CODBOD5489323.55.131420157615000~2000080008000152132131120,100,180cm2,3,,(110),(HRT)32h,80%,01067m3P(m2#h),10,---,HRT4h,30%,70003000mgPL,,,,,2Q()tFig.2TherelationbetweenpetroleumconcentrationandHRTinprecipitationprocess,HRT,,;,,,,HRT40h,HRT32h2%,4%,HRT28~32h3Q()tFig.3TherelationbetweensuspendsoildconcentrationandHRTinprecipitationprocess2131230h,,,2500~3500mgPL,1000~2000mgPL,COD2000~2500mgPL,,,9,,,3060mgPL,3(Q(),Q(),),80~120mgPL,1~2mgPL,150mgPL,4~6mgPL,,,,BOD5,,,,,,,,,HPAM(HD25%~30%),31:,43(DAF)Table3RemovalofpetroleuminDAFbydifferentflocculantsmgPL1)2)Q()P%Q()P%P%129190.52292.499.3231289.82791.399.1327890.91993.299.4430889.93189.999.0532489.43888.398.8629590.32790.899.1724392.01992.299.4822992.52091.399.3921892.91692.799.51):1)+HPAM;2)+HPAM;3)+HPAM;4)+ASA;5)+ASA;6)+ASA;7)+ADAEM;8)+ADAEM;9)+ADAEM,,HPAMHD27%,13002),,4(DAF)Table4Removalofpetroleumin2ndDAFmgPLCFSASAHPAMSSCODDAF-115070)240200850DAF-2120)23020300,,COD,:2987mgPL,SS1192mgPL,COD2156mgPL;SSCOD99%,9813%,8611%,3,,800t410,400,3125,12135,350,,:[20g,[10g,30h,01068m3P(m2#h),80%,75%,,55Table5RemovalofpetroleumbyskimmingandprecipitationmgPLQ()Q()P%COD8450221273.818560301283.88780132085.0,,,,,92%85%,COD62%:Q()[250mgPL,Q()[220mgPL,COD[900mgPL,,,7NTU,COD,66Table6TheeffluentqualityofDAFmgPLQ()Q()P%Q()P%P%301224192159399.5SS132020585209098.4COD2212846623206285.54a1,,,,,(下转第8页)4154Table4AnalysisdataforextractionproceduretoxicityofsedimentP(mg#L-1)1()01050105LgPL2)3()301073mgPL4()0130143mgPL5100111mgPL6115)7()500164mgPL8()5001174mgPL9()0111LgPL10()1001129mgPL11()1050LgPL12()11550LgPL13()500105mgPL14(CN-)1100106mgPL:0105LgPL,;0111mgPL,115mgPL,,,2,b.,,;,2,3,,,,,,,,,:[1].[J].,1995,(10):17.[2].[M].:,1995.(上接第4页)b1,,,,c1,,COD90%,98%97%80%:[1],.[J].,1999,9(2):96-99.[2]GilbertTTellez,NNirmalakhandan.Evaluationofbiokineticcoeffi-cientsindegradationofoilfieldproducedwaterundervaryingsaltcon-centations[J].WaterResearch,1995,29(7):1711-1718.[3]EvanKNyer.Groundwatertreatmenttechnology[M].2ndEditionNewYork,1992.[4]MadianES.TreatingofproducedwaterforsurfacedischargeattheArungascondensatefield[J].SocietyofPetroleumEngineers,1995,2:17.[5]JohnCCritten.Decontaminationofwaterusingadsorptionandphoto-catalysis[J].WaterResearch,1997,31(3):411-418.[6],,,.-[J].,1999,20(1):61-63.[7]GuoShuhai.Designandapplicationofconstructedwetlandtreatmentsystem[R].ProceedingofInternationalConferenceonConstructedWetlandforWastewaterTreatment.India,ChennaiUniv.,2000.[8]TellzT.Bioreclamationofnewmexicooilfieldproducedwastewater[M].CharacterizationandFeasibilityStudy.M.S.Thesis,NewMexi-coStateUniversity,1991.[9].[M].:,1987.[10].[M].:,1991.[11],,,.CODCr[J].,1999,10(1):17-19.[12],,,.[J].,1999,23(2):45-47.815