Methods and apparatus for controlled scrubbing and aeration of liquid medium

1. An apparatus for controlled ventilation and aeration of a liquid medium, the apparatus comprising:

a) a dome supported by a flotation device;

b) a lower housing supported by said flotation device, said lower housing connected to said dome, wherein a sealed space is defined under said dome and above the flotation liquid;

c) one or more orifices, said orifices configured in said dome;

d) an aeration apparatus positioned within said sealed space and partially submerged in the flotation liquid, wherein said aeration apparatus comprises one or more parallel shafts, at least one first disc positioned axially on one of said shafts, at least one second disc positioned axially on another of said shafts, wherein said second disc is interleaved relative to said first disc, and wherein a surface of said first disc rotates in a direction opposite a surface of said second disc relative to each other resulting in a mixing area therebetween;

at least one blower, said blower disposed in a position enabling an effect therefrom on the barometric pressure in said sealed space;

and wherein said one or more orifices, each orifice further comprises a dampening apparatus configured to adjust the air flow through said orifice from said blower.

2. The apparatus of claim 1 , wherein said one or more orifices disposed in a position above an interior liquid line within said dome.

3. The apparatus of claim 2 , wherein said one or more orifices, each orifice further comprises a vent tube to vent air flow from said blower through said orifice to above a liquid line.

4. The apparatus of claim 1 , wherein said one or more orifices disposed in a position above a liquid line.

5. The apparatus of claim 3 , wherein said blower maintains a specified pressure under said dome enabling said interior liquid line to be disposed in a position below said liquid line.

6. The apparatus of claim 3 , further comprising at least one strake carried by said first disc, each of said at least one stake defining a channel with end caps, and at least one strake carried by said second disc.

7. The apparatus of claim 6 , wherein said at least one strake strikes the liquid at said interior liquid line extracting gas from the liquid decreasing the dissolved gas in the liquid.

8. The apparatus of claim 7 , wherein said at least one strake pulls the liquid into a scrubbing area to extract the gas in the liquid to form gas depleted liquid.

9. The apparatus of claim 8 , wherein said blower evacuates the extracted gas outside said dome through said orifice to above a liquid line via said vent tube.

10. The apparatus of claim 9 , wherein said first disc carries gas from within said dome into said mixing area and said second disc carries the gas depleted liquid into said mixing area producing a shear force between the gas and the gas depleted liquid increasing the dissolved gas in the liquid.

11. The apparatus of claim 10 , wherein said strake on said first disc carries gas down into said mixing area and said strake on said second disc carries the gas depleted liquid up into said mixing area producing a shear force between the gas and the gas depleted liquid increasing the dissolved gas in the liquid.

12. The apparatus of claim 10 , wherein an increase in said barometric pressure under said dome via said blower enhances contact between said gas and said liquid within said sealed space.

13. The apparatus of claim 1 , wherein said dampening apparatus further comprises a valve mechanism configured to adjust air flow through said orifice.