Ib qho ntawm feem ntau cov ntaub ntawv ultrafiltration membrane yog polyvinylidene fluoride (PVDF). Cov khoom no nthuav tawm cov tshuaj lom neeg zoo thiab oxidation tsis kam, ua kom ntev - lub sijhawm ua haujlwm ruaj khov hauv cov tshuaj chlorine- muaj lossis cov dej tsis sib haum, ua rau nws siv dav hauv kev kho dej hauv nroog thiab kev lag luam. PVDF membranes feem ntau yog hloov nrog hydrophilicity kom txo tau cov membrane fouling thiab txhim kho flux stability.
Lwm cov khoom siv yog polyethersulfone (PES) lossis polysulfone (PSF). Cov ntaub ntawv no muaj lub zog txhua yam thiab zoo thermal stability, nrog rau cov qauv membrane thiab ruaj khov kev ua tau zoo, ua rau lawv haum rau precision filtration daim ntaub ntawv nrog cov dej zoo. Txawm li cas los xij, lawv lub ntuj hydrophilicity yog qhov tsis muaj zog, feem ntau yuav tsum tau hloov kho qhov chaw lossis cov khoom ntxiv los txhim kho lawv cov khoom tiv thaiv.
Kuj tseem muaj qee cov ntaub ntawv tshiab lossis hloov kho, xws li PAN (polyacrylonitrile), CA (cellulose acetate), thiab ceramic ultrafiltration membranes. Ceramic daim nyias nyias yog tsim los ntawm cov ntaub ntawv inorganic xws li alumina thiab zirconium oxide, muaj zog heev -kub tsis kam, acid thiab alkali tsis kam, thiab muaj peev xwm los tiv thaiv fouling, ua rau lawv haum rau qhov chaw muaj kev lag luam, tab sis ntawm tus nqi siab dua. Zuag qhia tag nrho, kev xaiv cov khoom siv ultrafiltration membrane yuav tsum muaj qhov sib npaug ntawm kev ua tau zoo, nqi, thiab kev siv ib puag ncig kom tau raws li qhov xav tau ntawm cov kev kho dej sib txawv.