METHOD FOR TRANSPORTING LIVE FISH AND SHELLFISH WITH HIGH DENSITY

摘要

PROBLEM TO BE SOLVED: To provide a method for transporting live fish and shellfish with high density, capable of increasing a surviving ratio of the live fish and shellfish, by adsorbing and eliminating nitrogen in air with granular zeolite or a separating membrane to concentrate oxygen in the air, and discharging the concentrated oxygen into a transportation tank as bubbles, so as to modify water in the tank into highly oxygen-dissolving water.;SOLUTION: In this method, the raw material air (1) is passed through a dehumidifying and dust-removing unit (3) by a compressor (2), the nitrogen is adsorbed and eliminated by a nitrogen adsorber (4) to concentrate the oxygen, then the concentrated oxygen is passed through a buffer tank (5), further the oxygen from the buffer tank (5) is contacted with a negative ion generator (12) and discharged into the transportation tank (7) as bubbles through air blow pipes (8), so that the highly oxygen-dissolving water is obtained in the transportation tank (7). The oxygen from the buffer tank (5) may be supplied to a cooling and pressure-accumulating tank (9) equipped with a water-circulating pump (10) on an output side thereof, pressurized therein, and discharged into the transportion tank (7) as the bubbles through the air blow pipes (8). Further, the water in the transportion tank (7) polluted with excretions discharged from the live fish and shellfish is recovered to a purification tank (11) by a recovery pump (13), then purified, and returned to the transportation tank (7).;COPYRIGHT: (C)2005,JPO&NCIPI