MBR和UF深度处理石化废水的比较研究

MBRUF胡保安1,连立国2,陈卓2,纪轩2,顾平1(1.天津大学环境科学与工程学院,天津300072;2.中石化股份公司天津分公司动力部,天津300271):为给某石化企业的反渗透(RO)系统提供水质良好且稳定的进水,分别采用膜生物反应器(MBR)和超滤(UF)工艺对该厂二沉池出水进行了深度处理试验,考察了进出水的浊度及CODSDI等指标结果表明:UF系统的出水浊度平均为0.18NTU,COD平均为22.1mg/L,SDI平均为2.50;MBR系统的出水浊度平均为0.14NTU,COD平均为20.1mg/L,SDI平均为2.22MBR的出水水质比UF更稳定,且具有较强的耐冲击负荷能力:膜生物反应器;超滤;石化废水;深度处理:X703.1:C:1000-4602(2006)15-0080-03ComparativeStudyonMBRandUFforAdvancedTreatmentofPetrochemicalWastewaterHUBao-an1,LIANL-iguo2,CHENZhuo2,JIXuan2,GUPing1(1.SchoolofEnvironmentalScienceandEngineering,TianjinUniversity,Tianjin300072,China;2.UtilitiesDivision,TianjinBranchofSinopec,Tianjin300271,China)Abstract:Membranebioreactor(MBR)andultrafiltration(UF)technologywereusedforadvancedtreatmentofthesecondaryeffluentfromapetrochemicalwastewaterplanttoprovidehighqualityeffluentforreverseosmosis(RO)system.COD,SDIandturbidityoftheinfluentandeffluentwereinvestigated.TheresultsshowthattheaveragevaluesofCOD,SDIandturbidityoftheeffluentfromUFprocessare22.1mg/L,2.50and0.18NTUrespectively,andthatoftheeffluentfromMBRprocessare20.1mg/L,2.22and0.14NTUrespectively.Theeffluentqualityandtheant-iimpactabilityofMBRprocessaresteadierandstrongerthanthatofUFrpocess.Keywords:MBR;UF;petrochemicalwastewater;advancedtreatment,(MBR)(UF)(RO)[12]RO,MBRUF,1工艺部分MBRUF,,,UF1UF:68L/(m2h),2,90%,0.04~0.12MPaMBR:40L/(m2h),(MLSS)6.66g/L,(HRT)7.8h,161,0.016~0.02MPa80第22卷第15期2006年8月中国给水排水CHINAWATER&WASTEWATERVo.l22No.15Aug.20061Fig.1Flowchartofexperimentalprocess2试验膜参数,11UFMBRTab.1MembraneparametersinUFandMBRprocessUFMBRPM()PVDF()100ku0.1mUFMBR,3结果与讨论31ROMFUF,UF0.35~7.67NTU,0.10~0.29NTU,93.2%MBR1.4~10NTU,0.13~0.24NTU,94.7%,22UFMBRTab.2AnalysisonturbidityofinfluentandeffluentfromMBRandUFprocess/NTU/NTUUF2.613.031.1610.185.5610-20.309MBR5.023.400.6770.144.9910-30.0362UFMBR,UF48%UF,MBRUF[3],100ku0.011m,MBR,MBR,MBRUF,,,MBR(PTA)MBR,22MBRFig.2RemovalofturbiditybyMBRprocess2,PTA,MBR,0.14NTU,MBR32CODUFCOD21.2~33.1mg/L,COD18.2~29.8mg/L,COD16.3%MBRCOD20.2~37.4mg/L,COD12.5~29.8mg/L,COD28%COD,33UFMBRCODTab.3AnalysisonCODofinfluentandeffluentfromMBRandUFprocess/(mgL-1)/(mgL-1)UF26.43.660.13922.13.420.155MBR27.95.160.18520.14.250.2113COD,COD81第15期胡保安,等:MBR和UF深度处理石化废水的比较研究第22卷UFCOD,100ku,MBRCOD,MBRHRT,MLSS,,MBRCOD,44MBRCODTab.4AnalysisonCODofinfluentandeffluentfromMBRinimpactcondition/(mgL-1)/(mgL-1)/(mgL-1)/(mgL-1)1428512220.460.16831.719.225.74.340.15834,COD5.16mg/L,20.46mg/L,COD,COD,COD,COD,MBR33SDISDI,,SDI,SDI,,[4]ROSDI5,SDIROUFMBRSDI,55UFMBRSDITab.5AnalysisonSDIofeffluentfromMBRandUFprocessUF3.620.742.500.610.244MBR2.851.832.220.420.189,MFUF,5,UFMBRSDI,3,MBRSDIUF,UF,MBRUF4结论与建议MBRUF,UF0.18NTU,COD22.1mg/L,SDI2.50;MBR0.14NTU,COD20.1mg/L,SDI2.22,MBRUFCOD,UFCOD;MBRCOD,COD,RO,(),:[1]BrehantA,BonnelyeV,PerezM.ComparisonofMF/UFpretreatmentwithconventionalfiltrationpriortoROmem-branesforsurfaceseawaterdesalination[J].Desalina-tion,2002,144(1-3):353-360.[2]KimJae-Sok,ChunHee-Dong,LeeChung-Hak.Compar-isonofultrafiltrationcharacteristicsbetweenactivatedsludgeandBACsludge[J].WaterRes,1998,32(11):3443-3451.[3],,.[M].:,2001.[4]SeymourS,TannerMatt.Siltdensityindices(SDI),per-centpluggingfactor(%PF):theirrelationtoactualfou-lantdeposition[J].Desalination,1998,119(1-3):259-262.E-mail:[e-mail]:2006-03-1082第15期中国给水排水第22卷