SEAWATER FISH RAISING WATER QUALITY MANAGEMENT METHOD AND DEVICE

摘要

PROBLEM TO BE SOLVED: To prevent the disease of seawater fish and to manage the water quality of the raising water of the seawater fish by chlorine not accompanying the death of the seawater fish by applying a DC voltage to seawater, generating the chlorine from seawater salt contents and controlling a chlorine concentration in the seawater introduced to a raising water tank in a specified range. SOLUTION: For instance, the raising water tank 1 is the circular shape with diameter of 8m and an upper part is covered with an air permeable vinyl sheet in a chevron shape. In the meantime, the water intake port 2 for a water supply system is installed clean offshore, water is tentatively stored in a sand taking well 4 by the water supply pipe 3 of a siphon type and it is pulled into the breeding water tank 1 through a main pipe 6 by a water feeding pump 5. A branched pipe 7 branched from the main pipe 6 is present in the middle of the main pipe 6 and a part of the seawater flowing through the main pipe 6 is pulled into a reaction tank 8. A return pipe 9 is disposed to the reaction tank 8, and by returning processed seawater inside the reaction tank 8 to the main pipe 6 at the downstream position of the branched pipe 7 of the main pipe 6, the water quality is managed.