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PVC71111221．1001242．2570917、。、。、、。CaCO3、62%、28%37%CaCO3、。TU991A1000－4602201813－0001－062012ZX07404－003、2014ZX07406－002PerformanceEvaluationandMembraneFoulingCharacteristicsofLong-termOperationofPVCAlloyUltrafiltrationMembraneLIANZhen-lei1LIXing1YUHai-kuan1YANGYan-ling1JIHong-jie2CAIChuan-yi21．CollegeofArchitectureandCivilEngineeringBeijingUniversityofTechnologyBeijing100124China2．DongyingWaterworksCompanyDongying257091ChinaAbstractThefirst-stageUFmembraneprocesshasoperatedforsevenyearsinDongyingNanjiaoWaterworks．Inordertostudythefoulingcharacteristicsandcontaminantcompositionofthelong-termul-trafiltrationmembraneacomparisonwasmadebetweentheoldUFmembraneandthenewone．ThetransmembranepressureTMPdifferencefluxchangerunningcosttheorganicandinorganiccom-poundsonthesemembraneswereanalyzed．TheresultsshowedthattheoldmembranehadtheproblemsofthemembranefluxdecreasinggraduallyandlargergrowthrateofTMPanditwasmoreeconomicaltoreplacetheultrafiltrationmembrane．Humicacidsproteinstryptophanandlowmolecularweightorganicmatterwerethemainpollutantscausingmembranefouling．CaCO3AlandSiintheoldmembranewasobviouslyhigherthanthatofthenewmembrane．Chemicalcleaningcouldonlyremove62%ofCaCO328%ofAland37%ofSiontheoldmembrane．Aftercleaningthenumberofmembraneporesin-·1·341320187CHINAWATEＲ＆WASTEWATEＲVol．34No．13Jul．2018creasedandtheamountofpollutantparticlesdecreasedsignificantly．Howeversomeoftheparticlesre-mainedinthemembraneporeswhichwastheimportantreasonleadingtoirreversiblefoulingoftheoldmembrane．Keywordsdrinkingwatertreatmentultrafiltrationmembranelong-termoperationirre-versiblefoulingpollutantcharacteristics“”、1、2。、、3、4。、52～35。55。10×104m3/d7PVC、。11.17PVC0．01μm50ku2m0．014μm2．172m。0．01m2。1.21。4h27h。。。。2进水出水14567839101.曝气泵2.压力传感器3.超滤膜组4.膜池5.空气扩散器6.放空管及阀门7.化洗时回流管8.蠕动泵9.电脑终端10.产水水箱1Fig．1SchematicdiagramofUFdevice1.3UV2540．001cm－1DOC0．01mg/L220～450nm220～550nmSEMEDS。4aNaClO4hbNaClO+NaOH2hHCl2hcNaClO+NaOH·2·3413．watergasheat．com2h2hdNaOH2hHCl2h。100m3/m2·h。22.12.1.12、4。0～27h30．2L/m2·h30．0L/m2·h0．66%30．2L/m2·h28．2L/m2·h6．6%10。32．50L/m2·h25．61L/m2·h21．2%。428．2L/m2·h30．1L/m2·h4．60%、5．20%、1．81%2．19%。。11010090807060通量恢复率/%新膜旧膜方式a方式b方式c方式d初始值清洗后502Fig．2Changeofmembranefluxbeforeandaftercleaning2.1.23、4。0～27h5．11kPa5．85kPa16．55kPa28．50kPa11．44kPa11．49。、Zhang6Ng7。2h15．06kPa5．65kPa2．676h3．5h41．67%。353025201510TMP/kPa0551015202530t/h方式a方式b方式c方式d未清洗旧膜未清洗新膜3Fig．3VariationcharacteristicsofTMPofmembrane37．00kPa5．11kPa27h17．00kPa。2.1.31132～37L/m2·h718～22L/m2·h360min120min。1256/1/7242。2。10．0535/m350．0812/m3·3·．watergasheat．comPVC7341310．36%、870．1068/m323．93%2．31、、。5～752660117851100。1Tab．1Operationparametersofultrafiltrationmembrane157/min320/360120/15090/120/·a－1624/·a－1—12/L·m－2·h－128～32/32～3718～21/22～2615～18/18～2212。2Tab．2Operationcostestimation·m－31570．0070．020．0230．0020．00270．00330．00030．0030．010．00170．0130．020．00450．00450．00450．0160．0160．0160．0220．0220．030．81/kW·h2．35/m3、22000/t5800/t1～5758007800/t。2.22.2.1DOC、UV254、SUVA3。DOCUV254NaClONaOHDOCUV254DOCUV254NaClONaOHDOCUV2546．47mg/L0．074cm－11．96mg/L0．032cm－1。SUVA＞3L/mg·mSUVA＜3L/mg·m、。3Tab．3ComponentofnewandoldmembraneeluentUV254/cm－1DOC/mg·L－1SUVA/L·mg－1·m－1NaOH+NaClO0．0321．961．6330．0746．471．144HCl0．0080．213．810．0260．396．6670．0130．353．7140．0450．656．923EEMEEMC、A、T、BCNaOHC997．17NaOHNaOH。NaClONaOH、489．45、514．62327．92NaClONaOH。、、。2.2.24。CaCO364．13%31．21%0．39%2．43%0．19%CaCO3、。·4·3413．watergasheat．comCaCO361．78%28．21%36．63%、、91011。12、、、。4Tab．4Contentofelementsinsidemembrane%CaCO3SiO2KClAl2O331．21066．770．191．8264．132．4332．580．390．4724．51～25．611．54～1．9871．70～73．750．28～0．380．36～0．462.2.34SEM。Saha13。CaCO3。a.新膜b.旧膜c.方式ad.方式be.方式cf.方式d4SEMFig．4SEMdiagramofinnersurfaceofmembranehole。3①1011．4921．2%41．67%0．1068/m3。②DOC6．47mg/L、997．17、489．45、514．62327．92。③CaCO364．13%330．39%2．43%61．78%、28．21%36．63%CaCO3、CaCO3、。④。1HuangWWangLZhouWZ．Effectsofcombinedo-zoneandPACpretreatmentonultrafiltrationmembranefoulingcontrolandmechanismsJ．JMembrSci20175331278－289．2ShiXFGalitTNicholasPetal．FoulingandcleaningofultrafiltrationmembranesAreviewJ．JournalofWaterProcessEngineering20141121－138．3．J．20174981－7．YangHaiyanWangCanZhaoYanetal．IdentificationoffoulantsandfoulingmechanismsforultrafiltrationofDongjiangＲiverwaterJ．JournalofHarbinInstituteofTechnology20174981－7inChinese．·5·．watergasheat．comPVC734134HilalNOgunbiyiOOMilesNJetal．Methodsem-ployedforcontroloffoulinginMFandUFmembranesAcomprehensivereviewJ．SepSciTechnol200540101957－2005．5．J．2011315107－111．WangLinHuKewuFengZhaominetal．Ｒesearchpro-gressinultrafiltrationmembranestechnologyforwater-worksJ．MembraneScienceandTechnology2011315107－111inChinese．6ZhangJChuaHCZhouJetal．Factorsaffectingthemembraneperformanceinsubmergedmembranebioreac-torsJ．JMembrSci2006284154－66．7NgTCNgHY．Characterisationofinitialfoulinginaerobicsubmergedmembranebioreactorsinrelationtophysico-chemicalcharacteristicsunderdifferentfluxcon-ditionsJ．WaterＲes201044132336－2348．8．J．2014301828－30．YuShuhuaCaiChuanyiYuHaikuanetal．Evaluationoffive-yearoperationeffectofNanjiaoWaterworksinDongyingJ．ChinaWater＆Wastewater2014301828－30i