Ultra-sefa (UF) ndi njira yolekanitsa ya membrane yomwe imatsuka ndikulekanitsa njira.Anti-ipitsa PVDF ultrafiltration nembanemba ntchito polima zinthu polyvinylidene fluoride monga waukulu filimu zopangira, PVDF nembanemba palokha ali amphamvu makutidwe ndi okosijeni kukana, pambuyo kusinthidwa wapadera zinthu ndipo ali hydrophilicity wabwino, mu ndondomeko ya nembanemba mwa sayansi micropore kapangidwe ndi micropore dongosolo kulamulira, micropore. pore kukula kufika pa mlingo ultrafiltration.Mtundu uwu wa zinthu zopangidwa ndi nembanemba uli ndi ubwino wa pores yunifolomu, kulondola kwakukulu kwa kusefera, kulowa kwa madzi ambiri pagawo la unit, kukana kwa okosijeni ndi kulimba kwamphamvu kwambiri.