Patent · US Expired

Method of treating waste water with jet nozzles

US4009100A · kind A · utility

11Cited by

6References

11Claims

0Family size

Assignee

BASF SE

Inventors

Klaus Hess
Richard Stickel · Bad Dürkheim, DE
Otto Nagel
Richard E. Sinn
Hans Daucher · Ludwigshafen, DE

Key dates

Filing date	Jan 27, 1975
Grant date	Feb 22, 1977
Priority date	—
Expiry date	Jan 27, 1995

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02W10/10
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

Method of biologically treating waste water with gasifying nozzles producing a screw-type flow in the activated sludge system. The method provides a maximum partial pressure gradient for the transfer of oxygen to the mixture of waste water and activated sludge.

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