GAS INTRODUCTION DEVICE AND GAS INTRODUCTION METHOD

摘要

PROBLEM TO BE SOLVED: To micronize bubbles in a solution when a gas is introduced into the solution.SOLUTION: A gas introduction device 10 includes: a discharge part 110; a pipeline 130; and an ultrasonic wave application part 140. The discharge part 110 is made of a porous material. The pipeline 130 is connected with the discharge part 110 and guides a gas to the discharge part 110. The ultrasonic wave application part 140 applies ultrasonic vibrations to the discharge part 110. The frequency of the applied ultrasonic vibrations is, for example, 20 kHz or higher. The gas introduction device 10 may include a first container 160 for retaining a solution to which the gas is introduced.