Gas dissolution method

Abstract

To provide a method for dissolving gas into water flow, which does not need a complicated device, is low in cost and is fuss-free in maintenance.SOLUTION: In a gas dissolution method, gas dissolution device is used, which comprises a gas supply source 10 and a dissolving part 500 is used, dissolves gas into water flow from a water-stream source 100 and in which the dissolving part comprises a tube part 600 through which water stream from the water-stream source is passed, where a vertical downstream wall pointing to a downstream side of water stream is formed in the tube part, so that the water stream flows around along the downstream wall to form a negative pressure region, and also comprises a gas supply passage 700 penetrating through the negative pressure region from a peripheral wall of the tube part, where the gas supply passage is connected to the gas supply source. The gas dissolution method supplies gas in the gas supply source through the gas supply passage to the negative pressure region.SELECTED DRAWING: Figure 1

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