Biogas reactor for the anaerobic treatment of waste water

US5500118A · kind A · utility

Assignee

• Passavant-Werke AG · DE

Inventors

• Hubert Coenen · Essen, DE
• Helmut Hubert · Wiesbaden, DE
• Michael Zumbragel · Katzenelnbogen, DE

Key dates

• Filing date: Jun 15, 1994
• Grant date: Mar 19, 1996
• Expiry date: Jun 15, 2014

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02E50/30
• WIPO field: Biotechnology
• WIPO sector: Chemistry

Abstract

In UASB-type biogas reactors, the biogas is separated from the rising waste water stream by collection hoods arranged in staggered fashion, in which a zero pressure level is maintained, at which the gas transition takes place. In cross-section shapes of existing collection hoods, the zero pressure surface is sharply reduced when the water level is high, and the conversion to gas is correspondingly sharply reduced. Therefore, in accordance with the invention, a rectangular section shape is employed in which the zero pressure surface remains unchanged. The topside of the collection hoods can be formed as a smooth sliding surface in the shape of a roof for the anaerobic sludge sediment.