Nanofiltration (NF) ke mokhoa oa ho arohana ha metsi o nang le lintho tse ngata tse nang le reverse osmosis (RO). Ho fapana le RO, e hanang hoo e batlang e le li-solute tsohle tse qhibilihisitsoeng, NF e hana li-ion tse ngata tse kang calcium ha e ntse e hana li-ion tsa monovalent tse kang chloride.
Ho li-membraane tsa HID re fana ka letoto la li-membrane tsa nanofiltration (NF) tse ntlafalitsoeng ho fana ka phallo e nepahetseng le ho hana 'me li ka fetoloa ho fihlela litlhoko tse ikhethileng tsa lits'ebetso tse fapaneng. Li-membrane tsa rona tsa nanofiltration, tse fumanehang ka spiral-leqeba le li-membrane tsa letlapa le sephara, li ka hana matsoai a mangata le limolek'hule tse kholoanyane ha ka boikhethelo li hana ho fetoha ha maemo a matsoai a mononovalent.
Mokhoa oa karohano oa nanofiltration o khetholloa ke li-membrane tse entsoeng ka manyolo, tse tšesaane-filimi tse nang le boholo ba pore ho tloha ho 0.1 ho ea ho 10nm. Li-membrane tsa NF, ho fapana le li-membrane tsa reverse osmosis (RO), li ka sebetsa ka likhatello tse tlase 'me tsa lumella ho khesoa ha solute ho itšetlehile ka boholo le tefiso.
Li-membrane tsa rona tsa nanofiltration, tse nang le boholo ba pore ho tloha ho 0.1 ho ea ho 10nm, li lumella metsi le matsoai a itseng ho phalla ha li ntse li boloka li-ion tse ngata, limolek'hule tse tlaase tsa boima ba limolek'hule, lik'habohaedreite, liprotheine le lintho tse ling tse phelang. Lihlahisoa tsa HID tsa NFS, NFX, NFW, le NFG nanofiltration membrane li bonts'itsoe li fana ka khanyetso e ntle ka ho fetesisa, khetho e phahameng, le ho tšoarella ha 'mele ho hlokahalang bakeng sa ho sebelisoa mekhoeng e mengata ea karohano ea indasteri kamora lilemo tsa lipatlisiso le nts'etsopele.
MgSO4 le lactose ho lahloa li ntle ho NFS, NFX, le NFW, athe NFG karolo e 'ngoe e tlosa monosaccharides ho li-oligosaccharides. Li-membrane tsa nanofiltration li ka boela tsa fokotsa thata, nitrate, sulfates, tannins, turbidity, 'mala, TDS, le maemo a letsoai a bonolo melapong ea metsi a phepelo.
Li-membrane tsa nanofiltration ke tšibollo e ncha e fanang ka khetho e ntle ea ion ho feta li-membrane tsa reverse osmosis, tse hanang mefuta eohle ea li-ion ka har'a phepelo ea phepelo. Tšobotsi ena e ikhethang e lumella ho fetoha ha maemo ho hoholo ho nts'etsopele ea karohano, e ka bang le tšusumetso e kholo mosebetsing le moruo, haholo-holo lits'ebetsong tsa indasteri. Mehlala e 'maloa ea kamoo theknoloji ea rona ea membrane ea NF e sebelisoang kateng:
- Lactose le demineralization ea whey ts'ebetsong ea lebese
- Lactose le mahloriso a whey
- Ho tlosoa ha lintho tsa tlhaho tsa tlhaho ka ho hloekisa metsi le metsi a litšila
- Phokotso ea boima ba ho hloekisa metsi
- Ho tlosoa ha sulfate metsing a leoatle le mekhoa ea lik'hemik'hale
- Ho tlosoa letsoai ka har'a liindasteri tse fapaneng
Nako ea poso: Jun-12-2022