I-Nanofiltration (NF) iwulwelwesi lokuhlukanisa uketshezi olunezinto eziningi ezine-reverse osmosis (RO). Ngokungafani ne-RO, enqaba cishe zonke izincibilikisi ezincibilikisiwe, i-NF yenqaba ama-ion amaningi afana ne-calcium kuyilapho yenqaba ama-ion amonovalent njenge-chloride.
Kumamembraane e-HID sihlinzeka ngomugqa wolwelwesi lwe-nanofiltration (NF) oluthuthukiswayo ukuze lunikeze ukuguquguquka okuphelele nokwenqatshwa futhi olungase lulungiswe ukuze luhlangabezane nezidingo ezithile zezinqubo ezihlukahlukene zokusebenza. Ulwelwesi lwethu lwe-nanofiltration, olutholakala kuma-spiral-wound kanye ne-flat sheet membrane topology, lungase lwenqabe usawoti omningi nama-molecule amakhulu kuyilapho ngokukhetha lwenqaba ukushintsha kwamazinga kasawoti anyakazayo.
Inqubo yokuhlukanisa ye-nanofiltration ibonakala ngolwelwesi oluhlanganisiwe lwefilimu elincanyana elinama-pore osayizi asukela ku-0.1 kuya ku-10nm. Ulwelwesi lwe-NF, ngokungafani nolwelwesi lwe-osmosis (RO), lungase lusebenze ngaphansi kwezingcindezi eziphansi futhi luvumele ukwenqatshwa okukhethekile okusekelwe kukho kokubili usayizi nenkokhiso.
Ulwelwesi lwethu lwe-nanofiltration, olunosayizi wezimbotshana ezisukela ku-0.1 kuya ku-10nm, luvumela amanzi nosawoti othile ukuthi kugeleze phakathi kuyilapho kugcinwa ama-ion amaningi, ama-molecule esisindo esiphansi, ama-carbohydrate, amaprotheni, nezinye izinto eziphilayo. Imikhiqizo ye-HID ye-NFS, NFX, NFW, kanye ne-NFG nanofiltration membrane ikhonjiswe ukuthi inikeza ukumelana okuhle kakhulu nokungalungile, ukukhetha okuphezulu, nokuqina komzimba okudingekayo ukuze kusetshenziswe uhla olubanzi lwezinqubo zokuhlukaniswa kwezimboni ngemva kweminyaka yocwaningo nentuthuko.
Ukwenqatshwa kwe-MgSO4 kanye ne-lactose kuhle ku-NFS, NFX, ne-NFW, kuyilapho i-NFG ngokwengxenye isusa ama-monosaccharides kuma-oligosaccharides. I-Nanofiltration membranes ingase futhi yehlise ngokuphawulekayo ubulukhuni, ama-nitrate, ama-sulfate, ama-tannins, i-turbidity, umbala, i-TDS, namazinga kasawoti aphakathi nendawo emanzini okuphakelayo.
I-Nanofiltration membranes iwukutholwa okusha okunikeza ukukhetha okungcono kwe-ion kune-reverse osmosis membranes, enqaba zonke izinhlobo ze-ion emfudlaneni wokuphakelayo. Lesi sici esihlukile sivumela ukuguquguquka okukhulu ekuthuthukisweni kwenqubo yokuhlukanisa, okungaba nomthelela omkhulu ekusebenzeni nakwezomnotho, ikakhulukazi ezinhlelweni zemboni. Nazi izibonelo ezimbalwa zokuthi ubuchwepheshe bethu be-membrane ye-NF busetshenziswa kanjani:
- I-lactose kanye ne-whey demineralization ekucutshungulweni kobisi
- I-Lactose kanye ne-whey concentration
- Ukususwa kwezinto eziphilayo zemvelo emanzini nokwelashwa kwamanzi angcolile
- Ukunciphisa ubulukhuni ekuhlanzweni kwamanzi
- Ukususwa kwe-sulfate emanzini olwandle nezinqubo zamakhemikhali
- Ukususwa kosawoti emithonjeni yezinqubo ezimbonini ezahlukahlukene
Isikhathi sokuthumela: Jun-12-2022