Method and equipment for the treatment of water contaminated by thermal oil and collection of said oil

Abstract

The invention relates to a method for the treatment of water contaminated by thermal oil and collection of said oil (for example, a eutectic mixture of biphenyl and diphenyl oxide), formed by a cooling phase (2) for cooling (to a temperature between the freezing point of the thermal oil and that of water) the mixture (1) of water and thermal oil, followed by the collection (3) of the part (4) of frozen thermal oil (precipitated or in suspension) by means of mechanical filtering. The remainder of contaminated water is treated in absorption filters and in activated carbon adsorption filters. The equipment required to implement this method comprises a cooling unit, a unit for the separation of phases by means of mechanical filtering for the collection (3) of the frozen thermal oil part (4), a unit (6) of absorption filters and a unit (7) of adsorption filters (activated carbon unit).

Dependencies are inferred from the claim text.