MBR工艺处理高盐度废水试验张哲

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91.91%和91.44%;但氨氮负荷提高到0.4kg(m3·d)左右时,其平均去除率仅为62.47%。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EXPERIMENTONTHETREATMENTOFWASTEWATERCONTAININGHIGHSALTBYMBRPROCESSZhangZhe　YuDeshuang　ZhangYejing(SchoolofChemicalEngineeringandEnvironment,QingdaoUniversity,Qingdao266071,China)Abstract:TheexperimentalstudyisabouttheinfluencefactorofthetreatmentofwastewatercontaininghighsaltbyMBRprocess.Thetestconditionsareasbelow:wastewatercontaining50%seawater,CODwas700～800mgL,NH3-Nwas80～100mgL,HRTwas12h,MLSSwas7～8gL.TheresultshowedthattheaverageremovalefficiencyofCODandNH3-Nwas91.91%and91.44%respectivelywhentheDOwas1～2mgLinthesaltycondition.ButwhentheloadingofNH3-Nwasincreasedto0.4kg(m3·d),theaverageremovalefficiencyofammoniawasjust62.47%.Therateofnitrosationcouldexceed50%byreducingtheconcentrationofDOandincreasingtheNH3-Nconcentrationoftheinfluent,butthiswaycouldnotkeepasteadyrateofnitriteaccumulation.Keywords:wastewatercontaininghighsalt;MBRprocess;theremovalefficiencyofCODandNH3-N;rateofnitrosation　　　　　　　　＊(50678085);(J06I03);(SDYY07091)。0　,,。、ShimshonBelkin[1-4]SBR、AO、A2O、,MBR。MBR,、、、[5],MBR,。MBR50%,DO、,MBR。1　1.1　试验装置1。97cm×50cm×70cm,194L,8KMS。30cm×20cm,0.4μm,2.57m2。4,,,7min、3min。1.2　试验用水、NH4Cl、KH2PO4、Na2CO3、50%MgSO4、CaCl2、FeSO4。COD700～800mgL,22　　　200910275DOI:10.13205/j.hjgc.2009.05.0051—;2—;3—;4—;5—;6—;7—;8—。1　MBR80～100mgL,17.5gL,Cl-9.5gL。2　2.1　DO对去除效果的影响,。,,[6],,,DO。,DO2。2　,DO2,,A,B,BA,A※B※A,AB,DO:aDO2～3mgL,bDO1.2～1.6mgL,cDO0.6～0.9mgL。B,,。,,,,。,HRT12h,7～8gL,COD700～800mgL,80～100mgL,DO0.5,1,23mgLCOD。3～5。3,DO1mgLCOD—◎—COD;—□—COD;—△—COD。3　DOCOD,90%,DOCOD。DO=0.5mgL,COD。(1～2d),,87.35%,(2d),COD,、、,79.86%。4,DO0.5mgL,,61.45%。DO1mgL,10mgL,90%。DO2mgL,,。5,DO0.5～1mgL,,,50%。,,DO。,DO1～2mgL,,COD91.91%、91.44%。—◎—;—□—;—△—。4　DO23　　　200910275—◇—;—□—;—■—。5　DO、2.2　进水氨氮浓度对去除效果的影响,DO1～2mgL,HRT12h,7～8gL,COD700～800mgL,85,180225mgL。6、7。—◎—;—□—;—△—;1=85mgL;2=180mgL;3=225mgL。6　—◇—;—□—;—■—;1=85mgL;2=180mgL;3=225mgL。7　6、7,,,91.34%,,0.8mgL。,,。225mgL,62.47%,,10.42mgL,50%。,[7],0.4kg(m3·d),75%,44.3%。,0.4kg(m3·d),62.47%,54.08%。,,。7,225mgL,,,22,50%。,,。3　1)MBR50%,,COD700～800mgL,80～100mgL,HRT12h7～8gL,DO1～2mgL,,COD91.91%91.44%。2)DO,50%,。,,。[1]　,,,.[J].,2003,23(1):50-54.[2]　ShimshonBelkin,AsherBrenner.Biologicaltreatmentofahighsalinitychemicalindustrialwastewater[J].WatSciTeach,1993,27(7):105-112.[3]　ThonghaiPanswad.Impactofhighchloridewastewateronananaerobicanoxicaerobicprocesswithandwithoutinoculationofchlorideacclimatedseeds[J].WatRes,1999,33(5):1165-1172.[4]　MillsEV.Effectofsalinesewagecanontheperformanceofpercolatingfilters[J].WaterandWastewaterTreatment,1992,(9):170-172.[5]　,.[M].:,2006.[6]　HyungSY.Nitrogenremovalfromsyntheticwastewaterbysimultaneousnitrificationanddenitrification(SND)vianitriteinaintermittentlyaeratedreactor[J].WatRes,1999,33(1):145-154.[7]　,,,.[J].,2008,24(9):8-12.　　266071　E-mail　[e-mail]2008-11-2424　　　200910275