AERATION DEVICE, ITS APPLICATION AND WATER TREATMENT PLANT WITH SUCH AERATION DEVICE

摘要

1. Aerator for aeration of water, comprising a distribution system (4) for distributing air below the surface of the water and a compressor (2) with an air inlet and at least one air outlet (23), the compressor (2) being arranged below the level of the water surface by means of the fact that the compressor (2) is provided with a casing preventing the penetration of water into the compressor (2), to prevent water from entering the air inlet, the inlet pipe (3) has an open end for position above the water surface, and the other open end, hermetically connected to the compressor (2), to prevent water from entering the air outlet (23), the air distribution system (4) is hermetically connected to the air outlet (23), and water can be restrained by virtue of its properties or through at least one valve, and the housing is made with the possibility of thermal contact with water to cool the compressor (2), characterized in that the compressor (2) is a centrifugal compressor containing an impeller (21 ) driven by a shaft (17) mounted on air bearings (24), magnetic bearings, or on both bearings. 2. An aerator according to claim 1, characterized in that the air distribution system (4) comprises at least one diffuser (12). 3. Aerator 1 or 2, characterized in that the air distribution system (4) comprises at least two distribution hoses (11) allotted from the compressor (2), each distribution sleeve having at least two diffusers (12) .4. Aerator according to claim 3, characterized in that the distribution sleeve (11) contains a lateral branch (28),