System for separating a feed stream comprising at least three liquid phases

The present invention provides a system (1) for separating a feed stream (10) comprising at least three liquid phases into at least three different liquid streams (20,30,40), the system (1) comprising a first separator (2) and a second separator (3), wherein - the first separator (2) comprises: an inlet (21) for receiving the feed stream (10); a first compartment (22) having a first overflow weir (23), a second overflow weir (24) and an underflow weir (25); a second compartment (26) that can receive liquid overflowing the second overflow weir (24) of the first compartment (22), the second compartment (26) having an outlet (27); a third compartment (28) that can receive liquid overflowing the first overflow weir (23) of the first compartment (22), the third compartment (28) having an outlet (29); and - the second separator (3) comprises: an inlet (31) for receiving fluid leaving the outlet (29) of the third compartment (28) of the first separator (2); a first compartment (32) having a first overflow weir (33), a second overflow weir (34) and an underflow weir (35); a second compartment (36) that can receive liquid overflowing the first overflow weir (33) of the first compartment (32), the second compartment (36) having an outlet (37); a third compartment (38) that can receive liquid overflowing the second overflow weir (34) of the first compartment (32), the third compartment (38) having an outlet (39).