METHOD FOR MANUFACTURING CARBONATED WATER

摘要

PROBLEM TO BE SOLVED: To suppress degasification of a carbon dioxide and to manufacture and maintain a predetermined carbon dioxide concentration for a long period by a simple operation at a low cost. SOLUTION: A method for manufacturing a carbonated water comprises the steps of supplying carbon dioxide gas into a gas dissolving unit 4 while circulating water in a bathtub 1 via the dissolving unit 4 by a circulating pump 2, and dissolving the gas in water. The method further comprises the steps of a starting step of generating the carbonated water of the desired gas concentration by applying the predetermined gas pressure at a starting time of circulating water to manufacture the carbonate water, and a concentration maintaining step of circulating the carbonated water by applying the predetermined gas pressure to maintain the desired gas concentration of the carbonated water generated by the starting step.