超滤膜混凝生物反应器去除饮用水中有机物的效能田家宇

/田家宇1,　张　宇2,　施雪华1,　陈　杰3,　李　星4,　田　森4,　李圭白1(1.哈尔滨工业大学市政环境工程学院,黑龙江哈尔滨150090;2.杭州市水业集团有限公司,浙江杭州310000;3.苏州立升膜分离科技有限公司,江苏苏州215152;4.北京工业大学建筑工程学院,北京100022)　　　:　采用超滤膜/混凝生物反应器(UF-MCBR)处理模拟微污染源水,考察了对有机污染物的去除效能与机理。结果表明,当聚合氯化铝投加量为10mg/L时,UF-MCBR对DOC、UV254、TOC、CODMn、BDOC和AOC的去除率分别为44.0%、54.5%、49.0%、58.5%、72.8%和58.3%。UF-MCBR通过超滤、生物降解以及混凝三者之间的协同作用去除溶解性有机物,就DOC的去除而言,三种作用的贡献率分别为11.1%、6.2%和26.7%。UF-MCBR系统中的UF膜表面为污泥层所覆盖,该污泥层能有效强化UF膜对分子质量为300～6000u有机物的截留,UF膜(连同污泥层)对憎水碱、憎水中性物、憎水酸、弱憎水酸和亲水性物质的截留率分别达到了37.0%、42.8%、52.7%、39.8%和19.0%。　　:　混凝;　膜生物反应器;　饮用水;　有机物:TU991　　:A　　:1000-4602(2009)05-0020-05　　:“”(2006BAJ08B06)EfficiencyofUltra-filtrationMembrane/CoagulationBioreactorforOrganicMatterRemovalfromDrinkingWaterTIANJia-yu1,　ZHANGYu2,　SHIXue-hua1,　CHENJie3,　LIXing4,　TIANSen4,　LIGui-bai1(1.SchoolofMunicipalandEnvironmentalEngineering,HarbinInstituteofTechnology,Harbin150090,China;2.HangzhouWaterGroupCo.Ltd.,Hangzhou310000,China;3.SuzhouLitreeUltra-filtrationMembraneTechnologyCo.Ltd.,Suzhou215152,China;4.CollegeofArchitectureandCivilEngineering,BeijingUniversityofTechnology,Beijing100022,China)　　Abstract:　Theremovaloforganicpollutantsfromdrinkingwaterbytheultra-filtrationmembrane/coagulationbioreactor(UF-MCBR)wasinvestigated.Theresultsshowthatwhen10mg/Lpolyalumini-umchlorideisaddedintotheUF-MCBR,theremovalratesofDOC,UV254,TOC,CODMn,BDOCandAOCare44.0%,54.5%,49.0%,58.5%,72.8%and58.3%respectively.UF,biodegradationandcoagulationjointlycontributetotheremovalofdissolvedorganicmatterintheUF-MCBR,andtheircon-tributionsare11.1%,6.2%and26.7%respectivelyforDOCremoval.AsludgelayerwasobservedontheUFmembranesurfaceintheUF-MCBRbySEManalysis.ThesludgelayeraidstheUFmembranetorejectorganicmatterswithmolecularweightrangingfrom300to6000u.TheUFmembranewiththesludgelayercanseparateHoB,HoN,HoA,WHoAandHiMinthemixedliquorby37.0%,42.8%,·20·第25卷　第5期2009年3月　　　　　　　　　　　　中国给水排水CHINAWATERWASTEWATER　　　　　　　　　　　　　Vol.25No.5Mar.200952.7%,39.8%and19.0%respectively.　　Keywords:　coagulation;　membranebioreactor;　drinkingwater;　organicmatter　　,,[1、2]。(BOM),、[3～5]。(),[6、7]。,。3/(UF-MCBR),,(0.5h)。1　材料与方法1.1　1,MBR。1　Fig.1　Schematicdiagramofexperimentalset-up(PVC),0.01μm,0.4m2。MBR8min、2min。、,20∶1。10L/(m2·h)。2L,(HRT)0.5h。20d,。,MBR6。(PAC),10mg/L,,2UF-MCBR。,,,。UF、MBR、UF-MCBR,UF、UF-MCBR。1.2　30∶1,1mg/L,。2d,UF-MCBR。(15.4±1.0)℃,pH7.14±0.14。1.3　CODMn;TOCDOC(0.45μm;,5000r/min5min)TOC;UV254;。BDOCServais[8],22℃3d;AOC[9]。(SEC)。,WatersUltrahydrogel250column(7.8×300mm),UV254nm。:0.1mol/LNaCl、0.002mol/LKH2PO40.002mol/LNa2HPO4(pH6.8)[10],0.4mL/min,50μL。AmberliteXAD-8XAD-4(DOM)(HoB)、(HoN)、(HoA)、(WHoA)(HiM)5,DOC[11]。2　结果与讨论2.1　2.1.1　。(、、),·21·田家宇,等:超滤膜/混凝生物反应器去除饮用水中有机物的效能第25卷　第5期、。DOC、UV254(5.734±0.597)mg/L(0.075±0.003)cm-1;UF-MCBR,(3.242±0.785)mg/L(0.034±0.002)cm-1,44.0%54.5%。,UF-MCBR。2.1.2　TOCCODMnTOCCODMn。TOC、CODMn(6.339±0.943)mg/L(4.18±0.31)mg/L。UF-MCBRTOC49.0%,CODMn58.5%。,UF-MCBRTOCCODMn,UF。2.1.3　UF-MCBR(BOM),、BDOCAOC,2。2　UF-MCBRBOMFig.2　BOMremovalbyUF-MCBR2,BDOCAOC(1.068±0.265)mg/L(445.5±208.5)μg/L,UF-MCBR72.8%58.3%,(0.295±0.120)mg/L(209.0±148.5)μg/L。UF,,UF-MCBR。2.2　UF-MCBR2.2.1　DOCUF、MBR、UF-MCBRDOC3。3　UF、MBRUF-MCBRDOCFig.3　DOCremovalbyUF,MBRandUF-MCBRUFDOC,11.1%,[12]。MBRDOC17.3%。MBR6.2%DOC。UF-MCBRDOC44.0%,UFMBR。MBR,UF-MCBRDOC26.7%,。2.2.2　UF-MCBR、4。4　UF-MCBR、Fig.4　ComparisonofDOCandUV254ininfluent,mixedliquorandeffluentofUF-MCBR4,DOCUV254,。,UF40.7%DOC48.3%UV254。2.2.1UFDOC11.1%,UF-MCBR,UF·22·第25卷　第5期　　　　　　　　　　　　　　中国给水排水　　　　　　　　　　　　。,UF,5。,,UF-MCBRUF。。,Al16%,Al。,Al,,、,,UF。5　UF-MCBRUFFig.5　SEMpicturesofUFmembraneinUF-MCBRandnewone,300～6000u;,300～2000u,。300～6000u,UF-MCBR。UF0.01μm,100ku,。6UF-MCBR、。,HoB、HoN、HoA、WHoAHiM547.0%、53.7%、45.6%、39.5%、22.3%;,UF537.0%、42.8%、52.7%、39.8%19.0%。4UF,;(19.0%),。6　UF-MCBR、Fig.6　FractionationofDOMininfluent,mixedliquorandeffluentofUF-MCBR3　结论①　10mg/L,UF-MCBRDOCUV25444.0%54.5%,TOCCODMn49.0%58.5%,BDOCAOC72.8%58.3%。②　、UF-MCBR,DOC,11.1%、6.2%26.7%。③　UFUF300～6000u,UF-MCBRUF()HoB、HoN、HoA、WHoAHiM37.0%、42.8%、52.7%、39.8%19.0%。:[1]　MurrayCA,ParsonsSA.RemovalofNOMfromdrink-ingwater:Fenton'sandphoto-Fenton'sprocesses[J].Chemosphere,2004,54(7):1017-1023.[2]　PolanskaM,HuysmanK,KeerCV.Investigationofmi-crobiallyavailablephosphorus(MAP)inflemishdrink-ingwater[J].WaterRes,2005,39(11):2267-2272.[3]　,,.BAF/O3[J].,2008,24(1):77-79,83.[4]　.[J].,2006,22(8):23-25.[5]　XuB,GaoNY,SunXF,etal.Characteristicsoforgan-icmaterialinHuangpuRiverandtreatabilitywiththeO3(下转第28页)·23·田家宇,等:超滤膜/混凝生物反应器去除饮用水中有机物的效能第25卷　第5期:[1]　,,.[J].,2002,28(9):27-29.[2]　,,.[J].,2006,24(125):47-48.[3]　,.[J].,2003,23(5):18-20.[4]　.[J].,1997,16(6):33-35.[5]　MogensHenze,PoulHarremoes.[M]..:,1999.[6]　,.[J].,2002,24(2):81-84.[7]　Maurer,Boller.Modelingofphosphorusprecipitationinwastewatertreatmentplantswithenhancedbiologicalphosphorusremoval[J].WaterSciTechnol,1999,39(1):147-163.[8]　Elisabeth.Phosphorusremovalfromwastewater:experi-mentalandtheoreticalsupportforalternativemecha-nisms[J].WaterRes,1997,31(2):328-338.[9]　EmilRydin,EugeneeB.Aluminumdoserequiredtoin-activephospha