Ultrafiltration (UF).
https://www.emergency-wash.org/water/en/technologies/technology/ultrafiltration-uf
👉🏼 PDF: https://app.box.com/s/blq646usjwqrqu1p78m2rhlg9rbfw8da _ Ultrafiltration (UF) is part of the family of pressurised membrane filtration systems that can purify water from undissolved and most dissolved substances. UF is used as a final treatment step and can be applied in the acute response as well as in the stabilisation and recovery phases of emergencies.