AERATION APPARATUS, SEAWATER FLUE GAS DESULPHURIZATION APPARATUS INCLUDING THE SAME, AND OPERATION METHOD OF AERATION APPARATUS

摘要

An aeration apparatus that is immersed in diluted used seawater, which is water to be treated, and generates fine air bubbles in the diluted used seawater. This aeration apparatus includes: an air supply line L5 that supplies air 122 through blowers 121A to 121D (in an embodiment of the present invention, four blowers) serving as discharge units; a pressure gauge 125 installed in the air supply line L5; and aeration nozzles 123A each including a diffuser membrane 11 having slits for supplying the air, so that when air supply pressure exceeds a predetermined threshold value based on a result of measurement by the pressure gauge 125, supply of the air by the discharge unit is temporarily suspended.