Biologically active composition for purifying waste water and outgoing air

US4681851A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Jorg Baumgarten · Wuppertal, DE
• Werner Frommer
• Theo Mann · Langenfeld, DE
• Imre Pascik · Monheim, DE
• Hans-Georg Rast · Odenthal, DE
• Dietmar Schapel · Cologne, DE

Key dates

• Filing date: Sep 22, 1986
• Grant date: Jul 21, 1987
• Expiry date: Sep 22, 2006

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02W10/10
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

Waste water and/or outgoing air are purified by contact with a polyurethane hydrogel containing surface active coal, a polymer having cationic groups and cells having enzymatic activity and being capable of growth.