Nitrogen treatment water generation apparatus, nitrogen treated water generating method, and, freshness retention processing method of fresh seafood to be processed by nitrogen treated water

摘要

Be improved greatly reduce the efficiency of dissolved oxygen in the treated water. A tank containing the treated water by providing a circulation passage for circulating a fluid, an intermediate portion of the circulation passage, the nitrogen gas is connected to the intermediate portion of the circulation channel in order to supply nitrogen gas to the treated water flowing out of the tank By using shear force to the gas-liquid mixed phase of the treated water and nitrogen gas supplied to the supply unit, the nitrogen gas supply unit, to be mixed with treated water and forms a bubble population with very fine bubbles of nitrogen gas The refluxed in the tank, it is dissolved in the treated water in the tank treated water bubble cluster-mixed to and a fluid mixing unit that is provided in the middle portion of the circulation channel, and flows out from the fluid mixing section By dissipating the nitrogen gas without the fine bubbles of oxygen, as well as to float in the process water a minute nitrogen gas oxygen is dissipated, and so as to escape from the treated water.