Process for eliminating nitrogenous organic compounds from salt-containing water

US7566403B2 · kind B2 · utility

Assignee

• LANXESS Deutschland GmbH · DE

Inventors

• Thomas Weiß · Ilvesheim, DE
• Peter-Roger Nyssen · Dormagen, DE
• Horst Bertram · Neunburg vorm Wald, DE
• Gunther Stolp
• Paul Wagner · Mülheim an der Ruhr, DE

Key dates

• Filing date: Dec 21, 2007
• Grant date: Jul 28, 2009
• Expiry date: Dec 21, 2027

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C02F2303/185
• WIPO field: Environmental technology
• WIPO sector: Chemistry

Abstract

The invention relates to a process for eliminating nitrogenous organic compounds from a salt-containing water which contains more than 0.5% by weight of salt in the form of CaCl2 or NaCl, less than 200 ppm of dissolved carbonic acid or carbonates and more than 50 ppm of nitrogenous organic compounds, by treating the water by wet oxidation at a temperature of below 100° C. with chlorine or a chlorine-containing oxidizing agent and feeding this, preferably after additional oxidation with a gaseous oxidizing agent and/or by adsorption with an adsorbent, to an electrolysis for producing chlorine and/or sodium hydroxide solution.