Patent · US Expired

Process and device for biological treatment of a suspension in a bioreactor with integrated hydraulic top scum treatment

US7186335B2 · kind B2 · utility

2Cited by

3References

20Claims

0Family size

Assignee

LINDE-KCA-DRESDEN GmbH · DE

Inventors

Gerhard Langhans · Dresden, DE
Matthias Herms · Dresden, DE
Thomas Buechner · Rabenau, DE

Key dates

Filing date	Jul 6, 2004
Grant date	Mar 6, 2007
Priority date	—
Expiry date	Nov 8, 2024

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02E50/30
WIPO fieldEnvironmental technology
WIPO sectorChemistry

Abstract

A process and a device for biological treatment of a suspension in a bioreactor, wherein the suspension is circulated, at least some of the suspension is routed through a vertically aligned guide zone in the bioreactor so that a vertical flow of the suspension is produced. The top scum in the area of the suspension fill level is controlled by feeding a fluid, especially in the form of a free liquid jet, into the bioreactor via at least one nozzle at the fill level, such that the surface of the suspension and/or the top scum floating on the surface of the suspension is forced into rotary flow.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.