| 摘要 |
<p>A first oxidation basin (51-1) includes a diffuser tube (52) that supplies air (29) to sulfur-content absorbing seawater produced when a sulfur content contained in a flue gas is brought into contact with seawater to perform seawater desulfurization, and performs a water-quality restoring treatment of the sulfur-content absorbing seawater. The first oxidization basin (51-1) includes an inlet (53) through which the sulfur-content absorbing seawater (16B) flows into the side of the diffuser tube (52) and an outlet (54) through which the sulfur-content absorbing seawater (16C) that is after being brought into contact with the air (29) is discharged. The diffuser tube (52) includes a main tube (61) that supplies the air (29) and an air tube (62) that extends from the main tube (61). The air tube (62) includes a sub tube (62a) that is connected to the main tube (61) and extends in a certain direction, and a plurality of branch tubes (62b) that is connected to the sub tube (62a) and extends in a direction different from the direction in which the sub tube (62a) extends. The branch tubes (62b) are arranged so as to be generally perpendicular to the flow direction of the sulfur-content absorbing seawater (16B).</p> |
