Lokacin zabar na'urar tsarkake ruwa ta ƙarƙashin nutsewa, akwai wasu sigogi da za a yi la'akari da su:

1. **Nau'in Mai Tsaftace Ruwa:**
– Akwai nau'ikan da dama da ake da su, ciki har da Microfiltration (MF), Ultrafiltration (UF), Nanofiltration (NF), da Reverse Osmosis (RO). Lokacin zaɓa, yi la'akari da fasahar tacewa, ingancin tacewa, sauƙin maye gurbin kaset, tsawon rai, da farashin maye gurbin.

2. **Tace ƙananan ƙwayoyin cuta (MF):**
- Daidaiton tacewa yawanci yana tsakanin microns 0.1 zuwa 50. Nau'ikan da aka saba amfani da su sun haɗa da harsashin tacewa na PP, harsashin tacewa na carbon da aka kunna, da harsashin tacewa na yumbu. Ana amfani da shi don tacewa mai kauri, cire manyan barbashi kamar laka da tsatsa.

– Rashin amfani sun haɗa da rashin iya cire abubuwa masu cutarwa kamar ƙwayoyin cuta, rashin iya tsaftace katunan tacewa (wanda galibi ana iya zubarwa), da kuma buƙatar maye gurbinsu akai-akai.

3. **Tacewa ta Ultrastrate (UF):**
- Daidaiton tacewa yana tsakanin microns 0.001 zuwa 0.1. Yana amfani da fasahar raba membrane na bambancin matsin lamba don cire tsatsa, laka, colloids, ƙwayoyin cuta, da manyan ƙwayoyin halitta.

– Fa'idodin sun haɗa da yawan ruwan da ake sha, sauƙin tsaftacewa da wankewa, tsawon rai, da kuma ƙarancin kuɗin aiki.

4. **Tace Nano (NF):**
– Daidaiton tacewa yana tsakanin UF da RO. Yana buƙatar wutar lantarki da matsin lamba don fasahar raba membrane. Yana iya cire ions na calcium da magnesium amma bazai iya cire wasu ions masu cutarwa gaba ɗaya ba.

– Rashin amfani da shi ya haɗa da ƙarancin saurin murmurewa daga ruwa da kuma rashin iya tace wasu abubuwa masu cutarwa.

5. **Juyawan Osmosis (RO):**
– Mafi girman daidaiton tacewa na kimanin microns 0.0001. Zai iya tace kusan dukkan ƙazanta, gami da ƙwayoyin cuta, ƙwayoyin cuta, ƙarfe masu nauyi, da maganin rigakafi.

– Fa'idodin sun haɗa da yawan ruwan gishiri, ƙarfin injina mai yawa, tsawon rai, da kuma jure wa tasirin sinadarai da halittu.

Dangane da ƙarfin tacewa, matsayin yawanci shine Microfiltration > Ultrafiltration > Nanofiltration > Reverse Osmosis. Ultrafiltration da Reverse Osmosis duk zaɓuɓɓuka ne masu dacewa dangane da abubuwan da ake so. Ultrafiltration yana da sauƙi kuma mai araha amma ba za a iya cinye shi kai tsaye ba. Reverse Osmosis yana da dacewa ga buƙatun ruwa masu inganci, kamar yin shayi ko kofi, amma yana iya buƙatar ƙarin matakai don amfani. Ana ba da shawarar a zaɓi bisa ga takamaiman buƙatunku da abubuwan da kuke so.