Sewage aeration device - with gas distributor having porous walls rotating relative to fluid deflectors for finer bubble generation

摘要

A fluid serration device for use in the treatment of effluents is fitted with a disc-shaped or cylindrical gas distributor for oxygen or air which can be rotated relative to a fluid deflection system. The deflecting elements (deflector vanes or nozzles) of the deflection system face a certain part of the gas distributor surface which is preferably porous and exert a shearing force on the emerging gas flow. This produces extremely fine bubbles with no extra energy expenditure. The bubbles are uniformly distributed. Gas distribution is combined with an effective fluid circulation.