Aerator apparatus

An apparatus for the circulation and mixing of water, said apparatus being placeable in an operative position in a parent body of water having lower regions comprising:

• an axial flow impeller means for drawing water substantially beneath the water surface and from the lower regions of said parent body of water for maximum efficiency in the circulation of said water;
• an impeller conduit for conducting the flow of water during rotation of said impeller means from an impeller inlet to an impeller outlet;
• said impeller means being mounted within said impeller conduit;
• means for rotating said impeller means and drawing said water through said apparatus;
• intake means in communication with said impeller inlet for directing water drawn by said impeller means into said impeller conduit means;
• a discharge area in communication with said impeller outlet for directing a maximum water flow from said impeller conduit into the surrounding parent body of water, said discharge area having directing means to restrict cavitation in said water flow and direct said water outward in a substantially horizontal flow underneath the surface of said parent body of water;
• and,
• an enclosed chamber disposed generally circumferentially about said discharge area and having a common wall with said discharge area and said impeller conduit, said common wall having an axial portion and a portion diverging outwardly forming an inverted cone portion above said axial portion, ports being formed on each of said axial portion and said inverted cone portion for increased turbulence and mixing of said cleansing agent with said water, said enclosed chamber being pressurizable with a cleansing agent, said cleansing agent being injectable under pressure into said discharge area through each of said ports, causing turbulence and increased mixing of said water.

An underwater apparatus for the circulation and aeration of waste water in a parent body of water having bed regions comprising:

• an axial flow impeller means for drawing water from the bed region of said parent body of water for maximum efficiency in the circulation of said water;
• a cylindrical impeller conduit means of minimal inside diameter and minimal length for maximizing the velocity and flow of water during rotation of said impeller means from an impeller inlet to an impeller outlet;
• said impeller means being mounted within said impeller conduit means;
• means for rotating said impeller means and drawing said water through said apparatus;
• intake means adjacent said impeller inlet for directing water from the bed regions of the parent body of water drawn by said impeller means into said impeller conduit means;
• a discharge area adjacent said impeller outlet, said discharge area having a channelling means for restricting cavitation and increasing water flow, said channelling means comprising an outwardly flaring upper discharge wall and an outwardly flaring lower discharge wall for directing water flow from said conduit into the parent body of water in a substantially horizontal flow underneath the surface of said parent body of water;
• and,
• an enclosed chamber disposed circumferentially about said discharge area and having a common wall with said discharge area and said impeller conduit, said enclosed chamber being pressurizable with a cleansing agent, said common wall including an impeller conduit wall and said outwardly flaring lower discharge wall and having a plurality of discrete equidistant ports circumferentially spaced about each of said impeller conduit wall and said outwardly flaring lower discharge wall, said cleansing agent being injectable under pressure into said discharge area through each of said ports, said cleansing agent thereby being injected into said water at at least two different angles for increased turbulence and increased mixing of said water.

An apparatus for the circulation and aeration of waste water in a parent body of water having bed regions comprising:

• an axial flow impeller means for drawing water from said bed regions of the parent body of water for maximum efficiency in the circulation of said water;
• a cylindrical impeller conduit of minimal inside diameter and length for efficiently conducting the flow of water during rotation of said impeller means from an impeller inlet to an impeller outlet;
• said impeller means being mounted within said impeller conduit drawing said water through said apparatus;
• intake means adjacent said impeller inlet for directing water drawn by said impeller means into said impeller conduit means, said intake means including a partially enclosed intake area for directing the flow of waste water into said intake area from a desired direction;
• a discharge area adjacent said impeller outlet, said discharge area being partially enclosed and having an opening for directing water from said conduit and said discharge area in a substantially horizontal flow and in a desired direction into the surrounding parent body of water;
• and,
• said intake means and said discharge area complementing one another to effectively control the circulation of said waste water in said parent body of water and maintain a desired flow pattern.