Clarifier or sedimentation basin comprises pure water drain channel connected with outlet line and comprising an uniform cover wall, holes in a wall for the entry of pure water from the basin into the drain channel, and parallel side walls

摘要

The clarifier or sedimentation basin includes pure water drain channel (1), which has an upwardly and/or downwardly extending trapezoidal and/or semi-circular cross section. Holes are arranged in parallel side walls (3, 4) of the drain channel and exhibit an outwardly projecting flange (5, 6). A cover wall (7) exhibits outwardly arranged projection (8, 9) over the holes. The projection and the flange are extended downwardly at the beginning of the holes or on the level the holes or under the holes. Screw connections are present between the cover wall and the flange. The clarifier or sedimentation basin includes pure water drain channel (1), which has an upwardly and/or downwardly extending trapezoidal and/or semi-circular cross section. Holes are arranged in parallel side walls (3, 4) of the drain channel and exhibit an outwardly projecting flange (5, 6). A cover wall (7) exhibits outwardly arranged projection (8, 9) over the holes. The projection and the flange are extended downwardly at the beginning of the holes or on the level the holes or under the holes. Screw connections are present between the cover wall and the flange. The cross section is tapered or extended on the basis of the cover wall. The drain channel has downwardly curved uniform bottom wall and parallel side walls below the tapering or extension. The side walls have tilting or curvatures. A control member of a controlling mechanism is used to control the water level in the basin and arranged in an outlet line connected with the channel. The drain channel rotates partly parallel to the wall of a round basin or is arranged radially from the wall to the center of the basin. The drain channel is completely submerged with the holes into the water in the basin.