資源描述：
《基于ptfe中空纖維膜的膜吸收脫氨-研究》由會(huì)員上傳分享，免費(fèi)在線(xiàn)閱讀，更多相關(guān)內(nèi)容在教育資源-天天文庫(kù)。
1、萬(wàn)方數(shù)據(jù)浙江理工大學(xué)碩士學(xué)位論文基于PTFE中空纖維膜的膜吸收脫氨研究度和吸收液流速對(duì)氨氮傳質(zhì)性能的影響規(guī)律。實(shí)際廢水的中試結(jié)果與實(shí)驗(yàn)室結(jié)果基本一致，去除氨氮效果良好。關(guān)鍵詞：PTFE；中空纖維膜；膜吸收；氨氮；傳質(zhì)萬(wàn)方數(shù)據(jù)浙江理工大學(xué)碩士學(xué)位論文基于PTFE中空纖維膜的膜吸收脫氨研究StudyonmembraneforstrippingammoniabyusingP耶EhollowfibermembraneAbstractAmmoniaisacommonkindofwaterpollutant,whichisofseriousharmtoh
2、umanhealthandtheecologicalenvironment．Thediversityandcomplexityofammoniawastewaterfromdifferentindustriesbringgreattroubletoammoniaremoval．Traditionalmethodsfarammoniaremovalsuchasphysicalandchemicalmethods，biobgicaldenitrification,whichhaveshortcomings，suchashighenergycomu
3、mptiort,bigcoveringareaandbwefficiency．Membraneabsorptionisanewseparationtechnologycombiningchemicalabsorptionmethodandmembraneseparationtechnology,whichisenergysavhg．coverhgasrmllarea,etc．Thechoiceofmembranematerialshasgreatinfluencesontheremovaleffectofmembraneabsorption,
4、mostofthemembranematerialsalepolypropylene儼P)，polyvinylidenefluoride(PVDF)．HoweverPTFEhasbeenthemostpromisingmembranematerialsduetoitssuperiorhydrophobicity,chemicalresistanceandthermalstability．Inrecentyears,ourresearchgrouphasfabricatedPTFEhollowfibermembranesthrough‘bast
5、e—extrusion-stretching-sintering”method．Inthispaper,PTFEholbwfibermembraneswerepreparedthrough‘baste—extrusion-sintering”method．sixkindsofPTFEhollowfibermembraneswithdifferentstructuresweremadebychangingextrusionheadsizesandslretehingratios，theeffectsofextrusionheadsizesand
6、stretchingratiosonthestructureofPTFEhollowfibermembraneswereinvestigated．Self-mademembranemoduleswerepreparedtocarryoutammoniaremovalexperimemsviamembraneabsorption．Theeffectsofmembranestructure(wallthickness,poresize)andmembranemoduledesign(packingdensity,membranelengtKpla
7、cementmode，runningmode)ontheammoniamasstransferperformancewereinvestigated．Resultsshowthatthemasstransfercoefficientandtheremovalrateincreasewiththedecreaseofwallthicknessandtheincreaseoftheporediameter．Itexistsabestpackingdensitytoi／laketheammoniamaSStransfercoefficiemlarg
8、est,whichalsocanachievehighammoniaremoval．TheammoniamassIransfercoefficientdecreas
