Device for storing a liquid that is provided with a floating cover, and use of such a device

An equipment (1) for storing a liquid (L) comprising:

• a storage tank (2) for the liquid (L) having a bottom (4) from which a cylindrical wall (6) closed by a ceiling (5) rises, the tank (2) being provided with washing nozzles (10) protruding from the ceiling (5) of the tank (2), and with at least one liquid (L) supply inlet (8) and at least one liquid (L) outlet (9);
• a cover (3) having a lower face (3a) and an upper face (3b), mounted inside the tank (2) and arranged to float on the liquid (L) present in the tank (2);
• characterized in that the cover (3) is mounted in the tank (2) to delimit with the cylindrical wall (6), a communication space (11) on either side of the cover (3), configured to allow the vertical displacement of the cover (3) when the level of the liquid (L) changes in the tank (2) and in that the equipment (1) includes a system for bearing (12) the cover (3) on the bottom (4) of the tank (2) protruding either from the bottom (4) of the tank or from the lower face (3a) of the cover (3).