Process for removing ethers and polycyclic aromatic...

Details Process for removing ethers and polycyclic aromatic... Process for removing ethers and polycyclic aromatic...

C - Chemistry, Metallurgy

02

F

C02F 1/28 (2006.01) B01D 15/00 (2006.01) B01J 20/34 (2006.01)

Patent

CA 2197044

Disclosed is a process for purifying groundwater by initially separating off solid constituents, adsorbing ethers and polycyclic aromatic hydrocarbons to an absorber resin, desorbing the adsorbed compounds with steam and regenerating the adsorbed resin with an acid. The process enables ethers and polycyclic aromatic hydrocarbons to be separated off from polluted groundwater to such a substantial extent that the groundwater can be added to flowing surface waters without problem. The purified water can, if appropriate, be used as cooling water or, after further biological purification, can also be used as drinking water.

Méthode pour purifier de l'eau souterraine par séparation au départ des constituants solides, par adsorption des éthers-oxydes et des hydrocarbures aromatiques polycycliques sur une résine adsorbante, par désorption des composés adsorbés à l'aide de vapeur, et enfin par régénération de la résine à l'aide d'un acide. Le procédé permet de séparer les éthers-oxydes et les hydrocarbures aromatiques polycycliques des eaux souterraines polluées, à un degré tel qu'il devient possible de faire passer sans problème ces eaux dans les eaux mouvantes de surface. L'eau purifiée peut, au besoin, servir comme eau de refroidissement ou, après une purification biologique supplémentaire, comme eau potable.

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