Oxygen water for fish and shellfish and its production system, fish and shellfish breeding device, fish and shellfish breeding method, fish and shellfish transport method and fish and shellfish oxygen ice

摘要

PROBLEM TO BE SOLVED: To provide fish-and-shellfish oxygen water useful for breeding and transporting the fish-and-shellfish.SOLUTION: The state of the fish-and-shellfish oxygen water is maintained for 35 days or longer such that a dissolved oxygen concentration is 25 ppm or higher under the opened atmosphere, and the fish-and-shellfish oxygen water is produced by a producing system including: a mixing device 10 for mixing oxygen and water; and pressurizing means. A mixing unit G of the mixing device 10 includes: a supply hole; a discharge hole; a flow passage for making the supply hole communicate with the discharge hole; and a plurality of cylindrical-column-shaped pins P protruded from the flow passage and subjected to super vibrations accompanying the contact with supplied water. The supply hole is arranged near the center of the mixing unit G, the discharge hole is arranged near the outer circumference edge thereof, a plurality of annular rows formed of a plurality of pins P arranged on concentric virtual circles are arranged from the center of the mixing unit toward the outer circumference edge, and the pins P are radially arranged from the center of the mixing unit toward the outer circumference edge. Water containing oxygen is supplied from the supply hole to the flow passage by the pressurizing means, the water containing oxygen passes through the flow passage while contacting the pins P, and oxygen and water are mixed by the super vibrations of the pins P and discharged from the discharge hole.