Water purification process

US4028233A · kind A · utility

Assignee

• Hoechst GmbH · DE

Inventors

• Karl-Ernst Quentin
• Ludwig Weil · Munich, DE
• Harald Berger · Kelkheim, DE

Key dates

• Filing date: Mar 7, 1975
• Grant date: Jun 7, 1977
• Expiry date: Mar 7, 1995

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C02F1/52
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

Drinking water is prepared from crude water containing dissolved lypophilic contaminants by adding polymers of ethylene or substituted ethylenes or copolymers of ethylene with less than 50 % by weight of other ethylenically unsaturated monomers which may contain additionally less than 2 mole % of ethylenes carrying a carboxyl function, and separating the polymer substance containing the lipophilic contaminants.