Split feed for the anaerobic biological purification of wastewater

US4559142A · kind A · utility

Assignee

• Linde GmbH · DE

Inventor

• Manfred Morper · Gauting, DE

Key dates

• Filing date: Feb 10, 1984
• Grant date: Dec 17, 1985
• Expiry date: Feb 10, 2004

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S435/801
• WIPO field: Environmental technology
• WIPO sector: Chemistry

Abstract

In the anaerobic biological purification of wastewater containing organic substances, some of which have a low rate of metabolism in anaerobic microorganisms, e.g., undissolved and/or partly macromolecular substances, the low-rate substances are separated from the wastewater into a secondary stream, e.g., by mechanical, adsorptive or precipitating means, before introducing the mainstream of the wastewater to be purified into the reactor operated under anaerobic conditions. The low-rate substances separated in concentrated form are treated, e.g., in a separate anaerobic reactor, or in an aerobic reactor situated downstream of the anaerobic reactor.