Ha u khetha mochini o hloekisang metsi ka tlas'a teba, ho na le lintlha tse 'maloa tse lokelang ho nahanoa:

1. **Mofuta oa Sehloeki sa Metsi:**
- Ho na le mefuta e 'maloa e fumanehang ho kenyelletsa Microfiltration (MF), Ultrafiltration (UF), Nanofiltration (NF), le Reverse Osmosis (RO).Ha u khetha, nahana ka theknoloji ea ho sefa, katleho ea sefa, boiketlo ba ho khutlisa cartridge, nako ea bophelo, le litšenyehelo tsa ho nchafatsa.

2. **Sefeela se senyenyane (MF):**
- Ho nepahala ha filthara hangata ho tloha ho li-microns tse 0.1 ho isa ho tse 50.Mefuta e tloaelehileng e kenyelletsa li-cartridge tsa PP filter, li-cartridges tse entsoeng ka carbon filter, le li-cartridges tsa ceramic filter.E sebelisoa bakeng sa ho sefa mahoashe, ho tlosa likaroloana tse kholo tse kang sediment le mafome.

- Mefokolo e kenyelletsa ho se khone ho tlosa lintho tse kotsi joalo ka libaktheria, ho se khone ho hloekisa li-cartridge tsa filthara (hangata li lahloa), le ho nkela sebaka khafetsa ho hlokahalang.

3. **Sefate sa Ultrafiltration (UF):**
- Ho nepahala ha filthara ho tloha ho 0.001 ho isa ho 0.1 microns.E sebelisa theknoloji ea ho arohana ha membrane ea khatello ho tlosa mafome, sediment, colloids, libaktheria le limolek'hule tse kholo tsa manyolo.

- Melemo e kenyelletsa sekhahla se phahameng sa ho khutlisa metsi, ho hloekisa habonolo le ho hlatsoa morao, nako e telele ea bophelo, le litšenyehelo tse tlase tsa ts'ebetso.

4. **Nanofiltration (NF):**
- Ho nepahala ha filthara ho pakeng tsa UF le RO.E hloka motlakase le khatello bakeng sa theknoloji ea karohano ea membrane.E ka tlosa li-ion tsa calcium le magnesium empa e kanna ea se tlose ka botlalo li-ion tse kotsi.

- Mefokolo e kenyelletsa sekhahla se tlase sa ho khutlisa metsi le ho se khone ho sefa lintho tse itseng tse kotsi.

5. **Reverse Osmosis (RO):**
- Ho nepahala ho holimo ka ho fetesisa ho ka bang 0.0001 microns.E ka sefa hoo e batlang e le litšila tsohle ho kenyeletsoa libaktheria, livaerase, metale e boima, le lithibela-mafu.

- Melemo e kenyelletsa sekhahla se phahameng sa desalination, matla a phahameng a mochini, nako e telele ea bophelo, le mamello ho tšusumetso ea lik'hemik'hale le likokoana-hloko.

Mabapi le bokhoni ba ho sefa, boemo hangata ke Microfiltration> Ultrafiltration> Nanofiltration> Reverse Osmosis.Ka bobeli Ultrafiltration le Reverse Osmosis ke likhetho tse loketseng ho latela likhetho.Ultrafiltration e bonolo ebile e theko e tlase empa e ke ke ea sebelisoa ka kotloloho.Reverse Osmosis e loketse litlhoko tsa boleng bo holimo ba metsi, joalo ka ho etsa tee kapa kofi, empa e kanna ea hloka mehato e meng bakeng sa tšebeliso.E kgothaletswa ho khetha ho ea ka litlhoko tsa hau tse khethehileng le likhetho.