초록 ▼

A process for the aeration of off-water or the like media in an aeration tank with the aid of an aeration face arranged below the water surface as well as an aeration device for carrying out this process in practice are described. The device comprises a rigid, self-supporting supporting body provide

A process for the aeration of off-water or the like media in an aeration tank with the aid of an aeration face arranged below the water surface as well as an aeration device for carrying out this process in practice are described. The device comprises a rigid, self-supporting supporting body provided with throughholes or being of porous material and covered with an elastic diaphragm; air is supplied to the supporting face of the body at the center of gravity or a gravity line thereof into a deflecting region and from there to the periphery of the body which is slightly raised vis-a-vis the central region of the body, from where the air escapes with decreasing pressure into the water to be aerated. The aeration face can be adapted to be swivelled, and the cross-sectional area of the supporting body can be of pyramid, wedge, circular or frustoconical configuration or it can be vaulted in a concave or convex manner. Basic shapes of the supporting body are a circular or a polygonal, preferably rectangular configuration.

대표청구항 ▼

A process for the intermittent aeration of a liquid such as waste water or the like medium in an aeration tank by means of an aeration device arranged below the surface of the liquid and comprising at least one supporting body having first perforations therein, an air-supply, and an elastic diaphrag

A process for the intermittent aeration of a liquid such as waste water or the like medium in an aeration tank by means of an aeration device arranged below the surface of the liquid and comprising at least one supporting body having first perforations therein, an air-supply, and an elastic diaphragm covering the supporting body, said diaphragm being of air-tight material and having a second perforations in the form of punctures, slots or holes in parts thereof out of register with said first perforations, as well as a frame structure locking the supporting body in position, said supporting body being rigid, self-supporting and air being directed substantially vertically onto said supporting body in at least deflecting reach thereof, and substantially in the center of gravity thereof or in series along a gravity line, the air being deflected toward the periphery of said body, said periphery being disposed slightly higher vis-a-vis said center of gravity, said air then being passed between said diaphragm and said supporting body with decreasing pressure into the water to be aerated, in an aerating plane being inclined with regard to the water surface at an angle of up to ±90° and is adapted to be swivelled for adjusting that angle. A device for the intermittent aeration of a liquid in an aeration tank, comprising: a rigid supporting body bearing an aeration face having first perforations therein, of random shape, a diaphragm of air-tight material covering said supporting body and having a second perforations in parts thereof out of register with said first perforations, a frame structure adapted for locking said supporting body in a chosen position in the aeration tank, said supporting body having a center of gravity and a periphery being disposed slightly higher than said center of gravity, an air supply adapted for feeding air directed substantially vertically relative to said supporting body and substantially in the center of gravity thereof, so as to enter a deflecting zone adapted to direct said air toward said periphery and to pass said air between said diaphragm and said supporting body with decreasing pressure into the water to be aerated, said aerating face extending in a plane being inclined with regard to the water surface at an angle of up to ±90°, and swivelling means associated with said supporting body and adapted for swivelling said body to adjust said angle, the static resistance of said supporting body being determined, besides the choice of material and the dimensionally of its thickness, by the magnitude of the displacement of the level thereof, situated at an angle of up to ±90°between the deepest point or deepest limit in the center of gravity or on a gravity line, respectively, the inclination of said angle being determined by the cross-sectional area of said aeration face, leading from said deepest point or limit to said periphery.