Tank arrangement and method for handling biomass

A bleeding, cooling and/or freezing arrangement for handling biomass, such as fish, comprising a first bleeding, cooling and/or freezing tank (1, 2, 3), having a biomass inlet (5), at least one water inlet (15), and a biomass outlet (16);

• a separator (7) for biomass and water coupled to the biomass outlet (16);
• at least one recirculating arrangement, the recirculating arrangement comprising a recirculating first pump (9) coupled to the separator (7) at an upstream side of the recirculating first pump (9), and a return water inlet (11) to the first tank (1, 2, 3) coupled at a downstream side of the recirculating first pump (9);
• an air pressure source (4) coupled to the first tank (1, 2, 3), wherein the arrangement further comprises a second pump (13) coupled to the separator (7) at an upstream side of the second pump, and a second bleeding, cooling and/or freezing tank (1, 2, 3) coupled to a downstream side of the second pump (13).