Process and apparatus for purification of wastewater

US5472611A · kind A · utility

Assignee

• Reinhart von Nordenskjold · DE

Inventors

• Reinhart von Nordenskjold · Haar, DE
• Peter Kroner · Birkenfeld, DE

Key dates

• Filing date: Oct 29, 1993
• Grant date: Dec 5, 1995
• Expiry date: Oct 29, 2013

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S210/906
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

The specification discloses a process and apparatus for the purification of wastewater in several successive stages wherein the wastewater is aerated in a first region and is then subjected to intermediate clarification in a second region and including a post-clarification aeration in a third region and post-clarification sedimentation in a fourth region. In order to provide a simple, space-saving, low-cost yet reliable wastewater treatment arrangement, the apparatus is arranged to include all four regions in one basin by providing separating walls in the basin. These regions can be preceded by other processing stage regions and followed by filtering or storage regions. In order to allow adjustment for varying loads and for changing relationships between hydraulic and biochemical loads, the separating walls between the regions are arranged to be movable to permit changes in the relative volumes of the regions.