Abstract: A device for supplying water containing dissolved gas includes a gas permeable film module that is partitioned into a gas phase chamber having a connection port at a bottom part and a liquid phase chamber by a gas permeable film, a feed unit feeding water to be treated to the liquid phase chamber, a gas supply unit supplying gas to the gas phase chamber, and a vacuum evacuation unit, connected with the gas phase chamber with the connection port, so that the gas is supplied to the gas phase chamber by the gas supply unit while the gas phase chamber is evacuated by the vacuum evacuation unit.

Abstract: A device for,supplying water containing dissolved gas and a process for producing water containing dissolved gas are provided. The device and the process are capable of stably supplying water containing dissolved gas having a low dissolved gas concentration, or low degree of saturation. Oxygen gas is supplied through a gas feeding pipe (31) to a gas phase chamber (13), and a vacuum pump (35) is operated to evacuate the gas phase chamber (13). Raw water is supplied through a raw water pipe (21) to a liquid phase chamber (12). Portion of the oxygen gas in the gas phase chamber (13) permeates a gas permeable film (11) and dissolves in the raw water in the liquid phase chamber (12), and thus water containing dissolved gas is produced. Remaining oxygen gas in the gas phase chamber (13) is sucked by the vacuum pump (35) together with condensed water and is discharged through a discharge pipe (33).