摘要 |
PROBLEM TO BE SOLVED: To provide an underwater discharge device generating highly reactive activated species in large amounts.SOLUTION: The underwater discharge device is provided with: a container (19) for storing water; a power source (70, 70a, 70b, 70c, 70d); and an electrode pair (64, 64a, 64b, 65, 65a, 65b, 170, 178) which is connected to the power source (70, 70a, 70b, 70c, 70d) and causes discharge in water to generate a hydroxide radical in the water inside the container (19). The device is further provided with: an ultrasonic generation part (94) converting into the hydroxide radical, the hydrogen peroxide in a liquid generated by change of the hydroxide radical generated by irradiating the water in the container (19) with ultrasonic waves; and an ion generation part (60) generating copper or iron ions in water. |