Patent · US Expired

Process for the purification of waste water

US5407576A · kind A · utility

10Cited by

7References

12Claims

0Family size

Assignee

PKA Pyrolyse Kraftanlagen GmbH · DE

Inventors

Bernd Wolf · Niederkirchen, DE
Claus Frischkorn · Linnich, DE
Peter Dolderer · Eßlingen, DE

Key dates

Filing date	Nov 20, 1992
Grant date	Apr 18, 1995
Priority date	—
Expiry date	Nov 20, 2012

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S210/912
WIPO fieldEnvironmental technology
WIPO sectorChemistry

Abstract

In a process for removing organic impurities and heavy metals from industrial, commercial or communal waste water, loaded drinking water, refuse dump drainage water or aqueous special wastes, the wet pyrolysis residues produced during the extraction of usable gas in the pyrolytic processing of refuse are introduced into one or more aerated filter basins (17) or filtration reactors (26) connected in parallel or in series. The waste water, loaded drinking water, refuse dump drainage water or liquid special wastes to be filtered or purified are pumped through the pyrolysis residue until its capacity for physical adsorption is exhausted.

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