Patent ID: 6722314
Filing Date: 2004-04-20
Classification: A01K

Abstract:
A method for improving farming conditions in closed circuit fish farming, comprising:a) recycling at least part of the water of at least one rearing pond, said recycled water undergoing one or more purification treatments, before being reinjected into the pond in question; b) mixing the recycled water with new water makeup; c) ozonating at least part of the recycled water and ozonating at least part of the new water makeup before mixing it with the recycled water, wherein a single ozonator is present as the sole ozonator in the circuit and operates according to the following procedures: said ozonator produces a main flow of ozonated gas; a predetermined portion of the main flow of ozonated gas is directed to a calibrated orifice, in order to direct a constant flow toward the recycled water; the output of said ozonator being adjusted on the basis of the flow rate of the new water to be ozonated.