連續(xù)膜過(guò)濾技術(shù)的應(yīng)用研究.pdf

1、分類號(hào)：TQ0288密級(jí)：?jiǎn)挝淮a：10058天津工業(yè)大學(xué)碩士研究生學(xué)位論文Y797幺8；；學(xué)號(hào)：0230210104連續(xù)膜過(guò)濾技術(shù)的應(yīng)用研究(申請(qǐng)碩十學(xué)位)研究生：李臻指導(dǎo)老師：呂曉龍研究員專業(yè)：材料學(xué)天津工、Ik大學(xué)材料科學(xué)與化學(xué)工程學(xué)院膜科學(xué)與技術(shù)研究所中空纖維膜材料與膜過(guò)程教育部重點(diǎn)實(shí)驗(yàn)室二00四年十二月ABSTRACTWithinthedevelopedanddevelopingcountriesshortageoffresh

2、waterisnowoneofthemainthreatstosustainabledevelopmentAvailablewaterresourcesareunderthreatduetopollutionoroverabstractionwhilstdomesticandindustrialconsumersdemandaneverhigherwaterqualityandtherighttoanuninterruptedsuppl

3、yofwaterInrecognitionoftheseproblems，extensiveuseofpoorqualitywaterresources(suchascontaminated／turbidwatersandsewage)israpidlybecominganecessityinordertosecureresourcesforthefutureinChinaSothemembranefiltrationtechnolog

4、yespeciallythePVDFhollowfibermembraneanditsContinuousMemhraneFiltration(CMF)systemmadeinChinaismoreandmoreimportantinmanyfieldsThe“membranesoftware”isakeyproblemforexamplehowtosecurethegoodquaiityandquantityofCMF’sproduc

5、tandeffectivemembranecleaningunderdifferentinfluenceandoperatingconditionsWestudiedthetechnicaloptimizationofCMFmanufacturedbvTMMETCsuchasthefrequencyofbackwashinginline，aircleaningtechnologyandmethodofchemicalcleaningle

6、adtoloweroperatingandmaintenancecostandlargerapplicationfieldofCMFsysteminmanyfull—scalestudyAtTianjinSeawaterDesalinationBasement，theoptimumoperationparametersofCMFwere35minutesofrunningtime30secondsofair—watercleaningt

7、ime，25secondsoflargefluxbackwashtimeand15secondsof出ainThecleaningwithairwaterwasthemosteffective，whenthepressureofcompressedairtankwasmorethan05MPaThecleanagentspreparedwimNaCl0HClandinfluenceofCMFwasveryeffectiveforthem

8、embranefoulingofCMFusedforseawaterreverseosmosispretreatmentThequalityofCⅣ匝’sproductwasconsistent，regardlessofut)setsintheseawaterqualityTheturbiditywasbetween006～007NTUTheSDIoscillatedbetween02TherecoveryofCMFwasmoretha

9、n96％勱fenergYcostwas03kwh／mjAtBeixiachewagtewatertreatmentplant，theappropriatelongestperiodofchemicalcleaningwas60daysBecausePVDFhollowfibermembraneischaracteristicofgoodchemicalstabilityandanti—fouling，usingacid，alkalian

10、doxidativesolutionwithmulti—stagewatercleaningprocesstocleanmembranewasveryeffectiveforremovingorganicfoulingTherewasaremarkabledecreaseofTMPinCMFsystem，Inthecourseofrunning，CMFworkedsteadilyThemeanturbiditywas007NTUandt

11、heremovingofCODcrwas35％Theenergycostwas028kwh／m3andruncostwas019RMB詹，AtShayingwagtewatertreatmentplantofShenglioilfield，theoptimumoperationparametersofCMFwere20minutesofrunningtime，30secondsofairlwatercleaningtimewithdos

12、ingNaClOandHCI30secondsoflargefluxbackwashtimeand10secondsofdrainThemosteffectivechemicalcleaningwagtouseNaOH，NaCIO，HCIpreparedwithtapwaterinturntoremovemembranefoulingfor40minutesrespectivelyThemeanturbidityofCMF’sprodu