| 摘要 |
<p>PURPOSE:To enable effective aeration of a river by highly dense supply of diffusing air over the entire width of the river. CONSTITUTION:A part of the bank 1 of a river is cut to extend the width of the river, and an air diffusion pipe 3 is stretched over the entire width of the river. Lots of air diffusion holes 7 are formed in the whole circumference or a part of the circumference of the wall of the pipe 3. Air introduced into the pipe 3 from an air supply source 5 is discharged from the holes 7 to aerate water in the river. The range of aeration covers the whole width of the river, and air is discharged from lots of the holes 3, so that highly dense aeration can be conducted.</p> |
