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:2002-07-23 : :·(1953-),,,.PAC-MBR迪莉拜尔·苏力坦1,2,莫 罹1,黄 霞1(1., 100084;2., 830046) :采用粉末活性炭-膜生物反应器组合工艺(PAC-MBR)对微污染水源水进行处理,考察了组合工艺对污染物的去除效果和膜过滤性能的变化。结果表明,该组合工艺对浊度和氨氮的去除率均在80%以上,对OC和UV254的去除率分别可达46%～57%和31%～42%,PAC投加量在500mg/L到3000mg/L的试验范围内,对污染物的去除效果影响不大。试验还表明,PAC-MBR组合工艺几乎能完全去除分子量1000的有机物。PAC投加量对膜过滤性能的影响不显著。:PAC-MBR组合工艺;微污染水源水;污染物去除效果;膜过滤性能;PAC投加量:X703 :A :1000-3770(2003)03-0143-04 (Membranebioreactor,MBR)。(Pow-deredactivatedcarbon,PAC)PAC-MBR。、,,、,。PAC-MBR,PAC,。1 试验装置与方法1.1 PAC-MBR1。-。,,0.1μm,0.27mm,0.42mm,0.4m2。(100)。图1 PAC-MBR组合工艺流程图1.2.3.4.-5.6.7.8.9.,,。,15min,2.5min,。,,,。,,。2h。第29卷 第3期2003年6月 TECHNOLOGYOFWATERTREATMENT Vol.29No.3June,2003DOI:10.16796/j.cnki.1000-3770.2003.03.0071.2 ,、、。1。1 (℃)(NTU)OC(mg/L)UV254NH+4-N(mg/L)pH226.154.830.096.696.9～15～291.5～10.82.30～7.350.02～0.160.68～12.696.5～7.31.3 OC、UV254、NH+4-N,。OC:。UV254:254nm,(UV-2401PC),1cm,。NH+4-N:。:OrbecoAnalyticalSystemsIns。:,UV254。2 结果与讨论2.1 PAC-MBR2.1.1 浊度、NH+4-N及有机物的去除效果图2 PAC-MBR组合工艺对浊度、NH+4-N及有机物的去除效果PAC3000mg/L,PAC-MBR、NH+4-N,2。 2,NH+4-N,,1NTU,NH+4-N1mg/L,90%。OC,OC,10d,,58%。,PAC,UV254,,UV25430%～42%。2.1.2 PAC投加量对去除效果的影响(HRT=2h),PAC,PAC。PAC15d,3。图3 PAC投加量对污染物去除效果的影响 ,PAC500mg/L3000mg/L,。NH+4-N,80%。OCUV25446%～57%31%～42%。UV254UV254。2.1.3 不同表观分子量有机物的去除效果PAC3000mg/L,、14429 3 (UV254)。,4。图4 组合工艺对不同表观分子量有机物的去除效果4,PAC-MBR1000,93%;1000～4000;,[1]。2.2 PAC-MBR,,: J=P_(Rm+Rf)×3.6×109(1)J(L/m2·h);P(kPa);_(Pa·s);RmRf(1/m)。(1):JP=1_(Rm+Rf)×3.6×109(2)J/P,,。,,。,1℃,2%[2]。,,(3)20℃[3]。J(20℃)=J(T)e-0.024(T-20)(3),J(20℃)20℃,J(T)T。2.2.1 连续运行条件下膜过滤性能的时间变化PAC3000mg/L,PAC-MBR,5。5,PAC-MBR,,2d;,,。,,,。,,。,,,,,。,10d。[4]。图5 连续运行条件下膜过滤性能的时间变化2.2.2 PAC投加量对膜过滤性能的影响PAC,PAC。,PAC,,2d,。500mg/L、1000mg/L3000mg/LPAC,,PAC2000mg/L,,PAC。3 结 论PAC-MBR、NH+4-N,80%,OCUV25446%～57%31%～42%。PAC500mg/L3000mg/L,。PAC-MBR1000145 ·,PAC-MBR,90%,。PAC-MBR2d,。PAC。:[1] ,.[M].:,1999.[2] ,,.[J].,1998,11(1):40～44.[3] BraghettaA,JacangeloJG,etal.DAFpretreatment:itseffectonMFperformance[J].JournalAWWA,1997,89(10):90～101.[4] ,,.-[J].,2002,23(2):45～49.STUDYOFTREATMENTOFMICRO-POLLUTEDRAWWATERBYPAC-MBRPROCESSDILIBAIER·Sulitan1,2,MOLi1,HUANGXia1(1.ESPCStateKeyLaboratory,DeptofEnvironmentalScienceandEng,TsinghuaUniversity,Beijing,100084;2.InstituteofChemistryandChemicalEngineering,XinjiangUniversity,Ulumuqi830046)Abstract:Treatmentofmicro-pollutedrawwaterusingpowdedactivatedcarbon(PAC)combinedwithmembranebioreactor(MBR)wastestd.Theremovalcharacteristicsofpollutantsandchangeofmembranepermeabilityinthecombinedprocesswereinvestigated.TheremovalratesofturbidityandNH+4-Nwereover80%,andOCandUV25443movalswereabout46～57%and31～42%,respectively.PACdosagehadlittleinfluenceonpollutantremovalsintherangeof500mg/Lto30000mg/L.Organicmatterswithmolec-ularweightlessthan1000couldbealmostfullyremovedinPAC-MBRprocess.PACdosagehadnosig-nificantinfluenceonthemembranepermeability.Keywords:PAC-MBRcombinationprocess;micro-pollutedrawwater;pollutantremoval;membranepermeability;PACdosage (139)THESTUDYONUV-INDUCEDSCREENINGMIXEDDOMINANTBACTERIAFORVARIOUSCHLORIDEDEGRADATIONQIAOQing-xia1,2,CHENZhong-hao1,XIAOJin1,LIUHong2(1SouthChinaUniversityofScienceandTechnology,CuangZhou510641,China;2GuangDongUniversityofTechnology,Guangzhou510080,China)Abstract:Inthepaper,thetechniqueofUV-inducedmutationwasappliedtoscreenthemixeddominantbacteriaforvariousofchloridefromnaturescreenedmixedbacteria.TheoptimalexposuretimeofUV-inducedmutationwasobtained.ItwasdiscussedthatthemixedbacteriascreenedbynaturescreeningandUV-inducedmutationcoulddegradevariouschlorideinbleachingwater.TheexperimentshowedthatthemixeddominantbacteriabyUV-inducedscreeningwereobviouslydifferentingroupcharacter,individulshapeandgrowthcharacteristivswiththemixedbacteriabynaturescreening.ThebacteriaB04byUV-inducedscreeningwasthebestbecauseitsCODCrremovalratewas19.71%higherthanthenaturebacteriaandtotalchlorideremovalratewasashighas99.86%.Keywords:UV-inducedmutation,degradation;variousofchloride;dominantmixedbacteria;bacteriascree14629 3