Process for removing ethers and/or polycyclic aromatic hydrocarbons from water containing them

US6270676A · kind A · utility

Assignee

• Degussa-Huels AG · DE

Inventors

• Gerda Grund · Coesfeld, DE
• John Kahsnitz · Haltern, DE

Key dates

• Filing date: Feb 10, 1997
• Grant date: Aug 7, 2001
• Expiry date: Feb 10, 2017

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C02F2103/06
• WIPO field: Environmental technology
• WIPO sector: Chemistry

Abstract

A process for the removal of ethers and/or PAH's from water, such as contaminated groundwater, is provided that proceeds by initially separating off solid constituents and then adsorbing ethers and polycyclic aromatic hydrocarbons to an adsorber resin, then, as needed, desorbing the adsorbed compounds with steam and regenerating the adsorber resin with an acid, to provide purification of highly polluted groundwater to such a substantial extent that the groundwater can be added to flowing surface waters without problem, and, if desired, used as cooling water or, after further biological purification, as drinking water.