Patent ID: 8851457
Filing Date: 2014-10-07
Classification: B01F,C02F,Y02W

Abstract:
1. An aeration method comprising the steps of: providing an aerator that comprises: at least one liquid intake at the bottom end of the gas-liquid mixture chamber providing all liquid intake to the gas-liquid mixture chamber; submerging the gas-liquid mixture chamber into a body of liquid; activating rotation of the shaft to which the at least one impeller is affixed, whereby rotation of the at least one impeller creates the low-pressure zone or vacuum that allows gas introduced into the gas conveyance tube to be drawn into the upper end of the gas-liquid mixture chamber; generating gas bubbles via the rotation of the at least one impeller wherein the gas from the upper end of the gas-liquid mixture chamber is brought into contact with the rotating impeller; forcing the gas bubbles to move downward in a radial and helical motion within the gas-liquid mixture chamber via the rotating action of the at least one impeller; confining the radial and helical downward motion of gas bubbles within the gas-liquid mixture chamber whereby the shearing action of the at least one rotating impeller and incoming liquid entering the bottom end of the gas-liquid mixture chamber produces gas bubbles that are predominantly less than 0.85 millimeters in size; and discharging the gas bubbles via the at least one discharge opening at the bottom of the gas-liquid mixture chamber into the body of liquid with minimum turbulence and wherein incoming liquid is drawn into the gas-liquid mixture chamber by suction created by rotation of the impeller, and the incoming liquid entering at the bottom end of the gas-liquid mixture chamber is of a greater pressure than the internal gas bubble pressure.