Method of treatment of waste water obtained in a gasification plant during washing of raw gas

US4632766A · kind A · utility

Assignee

• Krupp Koppers GmbH · DE

Inventors

• Bernhard Firnhaber · Essen, DE
• Adolf Linke · Essen, DE
• Rolf Wetzel · Heiligenhaus, DE

Key dates

• Filing date: Jun 14, 1984
• Grant date: Dec 30, 1986
• Expiry date: Jun 14, 2004

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C02F2103/18
• WIPO field: Environmental technology
• WIPO sector: Chemistry

Abstract

In a method of treating waste water obtained in a direct washing with water of raw gas in a plant for a gasification of gas, the waste water is first settled in a settling tank and a resultant concentrated slime-containing water is subjected to a multi-stage oxidation with air or oxygen only at the temperatures of between 20.degree. C., and 80.degree. C., and the slime-containing water obtained after the oxidation is conveyed to a filtration system or a slime-depositing container.