Process and apparatus for the treatment, in particular purification of water containing halogenated ethylenes

US5785866A · kind A · utility

Assignee

• Osterreichisches Forschungszentrum Seibersdorf GmbH · AT

Inventors

• Peter Gehringer · Wien, AT
• Emil Proksch · Wien, AT
• Walter Szinovatz · Staprijk, AT
• Helmut Eschweiler · Wien, AT

Key dates

• Filing date: Jul 17, 1996
• Grant date: Jul 28, 1998
• Expiry date: Jul 17, 2016

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C02F1/78
• WIPO field: Environmental technology
• WIPO sector: Chemistry

Abstract

Process and apparatus for treating water containing halogenated ethylenes, preferably ground water, for use and consumption by humans and animals, in which the water is exposed to the action of ozone and to high energy, in particular ionizing radiation. In a preliminary treatment, ozone is added to and/or mixed with water of essentially drinking water quality except for the above-mentioned halogenated ethylene constituents and harmful substances. The circulating water is then irradiated with electrons. The ozone concentration immediately after leaving the irradiated region is at least 0.1 ppm.