To provide a method for controlling a delivery angle of an aerator capable of continuously supplying a large quantity of fine air bubbles having a homogenous size to a degree of tens of μm with reduced consumption energy and controlling the delivery angle from the aerator and to provide an aerator therefor.
In an aerator 1 to supply fine air bubbles to a solution 23 to be treated by delivering gas-liquid two phase flow which is formed by incorporating a gas phase into a liquid, the aerator is provided with a delivery flow forming tank 9 immersed in the solution 23 to be treated, of which the delivery port 7 opens to the bottom part 5, a liquid supply means 13 which supplies the liquid to the delivery flow forming tank 9 in the jetting direction to form swirling flow which swirls within the tank along the peripheral walls 3 of the delivery flow forming tank 9, a gas supply means 17 which introduces air into the liquid within the delivery flow forming tank 9 and a core body 19 which is arranged in the swirling axis direction of the swirling flow in the proximity of the delivery port of the delivery flow forming tank 9 and which forms a thin layered shape of the supplied air on the surface of the outer periphery.
KADOTA TOKUMITSU
NONAKA MICHIRO
NONAKA MICHIRO