Equipment for injecting a gas into a cesspool

Floating equipment for injection of a gas into liquid effluents or waste water, comprising the following elements:

• a driving device, intended to be disposed over the liquid, provided with a vertical output shaft (8), equipped at its end with a propeller (6) immersed in the liquid;
• and
• a pre-mixing device (5) comprising an injection device (7) positioned above or below a mobile aerator (9) with inclined blades, the propeller being situated at the end of the shaft, under a pre-mixing reactor,
• wherein said equipment comprises an assembly of at least two plates (11) with a substantially parallelepiped or trapezoidal form, located below the waterline, said plates being fixed at one end to a body and joined completely or partly to the constituent elements of the injection equipment and the injection device (7) as well as floating elements enabling the equipment to be floating, the plates being directed towards the drive axis of the propeller.