Plant for the separation of undesirable substances from alimentary liquids,
in particular from wine, which comprises a unit (3) with hydrophobic membranes
(4) having holes (5) for trapping gas (G), supplied with wine to
be treated (V) by means of first circulation means (6) and with an extraction
fluid (L) having an alcoholic content substantially similar to that of the wine
to be treated (V), by means of second circulation means (7). The two fluids
pass along the two sides (4,4";) of the membranes (4), allowing
the removal of the undesirable volatile substances which pass through the latter.
The extraction fluid (L) is made to circulate by the second means (7) inside
a purification circuit (8) which comprises a unit (9) for separation
of the volatile substances, consisting preferably of an ion-exchange column. The
process implemented in particular by the abovementioned plant envisages a step
involving preparing the wine to be treated (V) inside a container (2), a
subsequent step involving conveying to the abovementioned unit (3) and then
a step involving removal of the undesirable volatile substances contained therein
by means of evaporation, diffusion and consequent evaporation thereof which causes
them to pass through the membranes (4) so as to be then evacuated by the
extraction fluid (L) by means of ion-exchange resins, distillation, adsorption
onto polymers or other system.
