MBR工艺处理高盐度废水试验

MBR*张哲于德爽张业静(,266071):采用MBR工艺对高盐度废水处理的影响因素进行研究试验条件如下:污水中海水比例为50%,COD为700~800mgL,氨氮为80~100mgL,HRT为12h,污泥浓度为7~8gL试验结果表明:在高盐度条件下,采用低溶解氧(DO为1~2mgL),COD和氨氮的平均去除率可分别达到9191%和9144%;但氨氮负荷提高到04kg(m3d)左右时,其平均去除率仅为6247%通过降低DO浓度和提高进水氨氮浓度可以使亚硝化率达到50%以上,但不能保持稳定的亚硝酸盐积累:高盐废水;MBR工艺;COD及氨氮去除率;亚硝化率EXPERIMENTONTHETREATMENTOFWASTEWATERCONTAININGHIGHSALTBYMBRPROCESSZhangZheYuDeshuangZhangYejing(SchoolofChemicalEngineeringandEnvironment,QingdaoUniversity,Qingdao266071,China)Abstract:TheexperimentalstudyisabouttheinfluencefactorofthetreatmentofwastewatercontaininghighsaltbyMBRprocess.Thetestconditionsareasbelow:wastewatercontaining50%seawater,CODwas700~800mgL,NH3Nwas80~100mgL,HRTwas12h,MLSSwas7~8gL.TheresultshowedthattheaverageremovalefficiencyofCODandNH3Nwas9191%and9144%respectivelywhentheDOwas1~2mgLinthesaltycondition.ButwhentheloadingofNH3Nwasincreasedto04kg(m3d),theaverageremovalefficiencyofammoniawasjust6247%.Therateofnitrosationcouldexceed50%byreducingtheconcentrationofDOandincreasingtheNH3Nconcentrationoftheinfluent,butthiswaycouldnotkeepasteadyrateofnitriteaccumulation.Keywords:wastewatercontaininghighsalt;MBRprocess;theremovalefficiencyofCODandNH3N;rateofnitrosation*(50678085);(J06I03);(SDYY07091)0,,ShimshonBelkin[14]SBRAOA2O,MBRMBR,[5],MBR,MBR50%,DO,MBR111试验装置197cm50cm70cm,194L,8KMS30cm20cm,04m,257m24,,,7min3min12试验用水NH4ClKH2PO4Na2CO350%MgSO4CaCl2FeSO4COD700~800mgL,222009102751!;2!;3!;4!;5!;6!;7!;8!1MBR80~100mgL,175gL,Cl-95gL221DO对去除效果的影响,,,[6],,,DO,DO22,DO2,,A,B,BA,A∀B∀A,AB,DO:aDO2~3mgL,bDO12~16mgL,cDO06~09mgLB,,,,,,,HRT12h,7~8gL,COD700~800mgL,80~100mgL,DO05,1,23mgLCOD3~53,DO1mgLCOD!#!COD;!∃!COD;!%!COD3DOCOD,90%,DOCODDO=05mgL,COD(1~2d),,8735%,(2d),COD,,7986%4,DO05mgL,,6145%DO1mgL,10mgL,90%DO2mgL,,5,DO05~1mgL,,,50%,,DO,DO1~2mgL,,COD9191%9144%!#!;!∃!;!%!4DO23200910275!&!;!∃!;!∋!5DO22进水氨氮浓度对去除效果的影响,DO1~2mgL,HRT12h,7~8gL,COD700~800mgL,85,180225mgL67!#!;!∃!;!%!;1=85mgL;2=180mgL;3=225mgL6!&!;!∃!;!∋!;1=85mgL;2=180mgL;3=225mgL767,,,9134%,,08mgL,,225mgL,6247%,,1042mgL,50%,[7],04kg(m3d),75%,443%,04kg(m3d),6247%,5408%,,7,225mgL,,,22,50%,,31)MBR50%,,COD700~800mgL,80~100mgL,HRT12h7~8gL,DO1~2mgL,,COD9191%9144%2)DO,50%,,,[1],,,.[J].,2003,23(1):5054.[2]ShimshonBelkin,AsherBrenner.Biologicaltreatmentofahighsalinitychemicalindustrialwastewater[J].WatSciTeach,1993,27(7):105112.[3]ThonghaiPanswad.Impactofhighchloridewastewateronananaerobicanoxicaerobicprocesswithandwithoutinoculationofchlorideacclimatedseeds[J].WatRes,1999,33(5):11651172.[4]MillsEV.Effectofsalinesewagecanontheperformanceofpercolatingfilters[J].WaterandWastewaterTreatment,1992,(9):170172.[5],.[M].:,2006.[6]HyungSY.Nitrogenremovalfromsyntheticwastewaterbysimultaneousnitrificationanddenitrification(SND)vianitriteinaintermittentlyaeratedreactor[J].WatRes,1999,33(1):145154.[7],,,.[J].,2008,24(9):[e-mail]2008-11-2424200910275