| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide an aeration device constituted so as to perform efficient aeration without using power by utilizing the power of radially scattered jet water before the scattered jet water falls on the surface of the water. SOLUTION: In an aeration device constituted so that sewage is sucked by the changeover of the rotary direction of a vertical shaft having stirring blades 3 in the vicinity of a free surface to be ejected and scattered radially from the surface of the water to be brought into contact with air and the aeration action generated by the sending of air into water by the falling of scattered water to the surface of the water and sewage stirring action performing only the stirring of water without sending air into water are selectively performed, the aerator 1 arranged to a float 10 and the water wheel 5 disposed at the outer peripheral part of the float 10 to receive the pressure of jet water by the aerator 1 to rotate and performing the aeration of sewage are equipped.</p> |
