Apparatus for gas absorption in a liquid

An apparatus for effecting gas absortpion in a liquid, comprising:

• a container containing a liquid;
• a vertically oriented tubular member positioned in said container such that a top end thereof is positioned below gthe surface of the liquid, said tubular member forming a flow path of said liquid through said tubular member from said top end to a bottom end thereof;
• gas introducing means disposed within said vertically oriented tubular member, said means comprising one or more vertically oriented air foil members having oppositely positioned high and low pressure surfaces, said gas introducing means being connected to a source of gas and operative to release said gas into said flow of liquid;
• a nozzle housing attached to said bottom end of said vertically oriented tubular member including nozzles formed to direct a flow of said liquid and said gas downwardly into said container;
• a pump operatively connected to the bottom end of said nozzle housing such that an impeller thereof is positioned within said vertically oriented tube upstream of said nozzle housing, said pump being operated such that said liquid is drawn vertically downward through said vertically oriented tubular member such that said gas is drawn from said gas introducing means into said downwardly directed liquid flow and such that the rate of flow is greater than an upward movement direction of bubbles of said gas in the liquid.