Patent DE-202005015471-U1 (DE)
Title: Murky water clarifier comprises round/rectangular basin, inlet for feeding murky water into basin, discharge for collecting clarified water from basin, and bottom sludge discharge for collecting sludge deposited at the bottom of basin
IPC: C02F11/121
Filed: 2005-09-29
Abstract: The murky water clarifier comprises a round/rectangular basin (2), an inlet for feeding murky water into the basin, a discharge for collecting the clarified water from the basin, and a bottom sludge discharge for collecting sludge deposited at the bottom of the basin, a swimming sludge discharge for collecting the sludge from the water surface in the basin, a gutter (5) with a spill-over rim and an auger (7), and displacement mechanism (4) for shifting the water surface. The spill-over rim and the auger are parallel to the water surface. The murky water clarifier comprises a round/rectangular basin (2), an inlet for feeding murky water into the basin, a discharge for collecting the clarified water from the basin, and a bottom sludge discharge for collecting sludge deposited at the bottom of the basin, a swimming sludge discharge for collecting the sludge from the water surface in the basin, a gutter (5) with a spill-over rim and an auger (7), and displacement mechanism (4) for shifting the water surface. The spill-over rim and the auger are parallel to the water surface. The augers are arranged acute-angled or rectangular at both sides of the gutter and each end of the augers is respectively adjacent to the different ends of the gutter. A dipping wall (8) is arranged at the adjacent ends of the gutter and auger. The wall extends transverse over the spill-over rim (6) and exhibits a through-passage opening (9) arranged at the end of the auger. The dipping wall extends from the end of the gutter adjacent to the auger. The auger with its worm shaft is arranged at the level of the water surface and/or a swimming sludge support wall is arranged parallel to the auger along the displacement direction of the gutter and adjacent to the water surface in front of the auger. A relative displacement of the water surface and the arrangement from gutter and auger are caused around the center of the basin by the displacement mechanism and are carried out parallel to a wall of the basin by the displacement mechanism. The gutter and auger extend over the entire radius of the round basin or over the entire width of the rectangular basin. The vertical location of the spill-over rim is adjustable. The gutter is pivotably-mounted around a swivel axis parallel to the gutter axis. The spill-over rim is arranged at a gutter wall pivotably-mounted at the gutter. The height of the spill-over rim is adjustable by an automatic regulation mechanism having the gutter with different lift volumes at the two sides of the swivel axis. The regulation mechanism is connected with a sensor for swimming sludge recognition. The gutter is arranged radially far from the auger with respect to the center of the basin. The clarifier exhibits a control and/or regulation mechanism connected to the auger and/or the gutter. The gutter and the auger are controlled in such a way that the gutter is set in operation and the auger is out of operation and vice-versa. The control mechanism is connected with a device for measuring the wind force and/or wind direction. A horizontally tiltable feed plate is located at the displacement mechanism for delivering swimming sludge from the swivelling area of the feed plate into the gutter. The arrangement from gutter and feed plate are parallel to each other. Feed plates are arranged at both sides of the gutter. The feed plate exhibits a curvature and/or a bending in the displacement direction. The pivotal-mounting of the feed plate is arranged at the radially internal or external side of the gutter. The gutter and/or the auger and/or the dipping wall and/or the swimming sludge support wall and/or the feed plate are held at the displacement mechanism and is/are shiftable parallel to the water surface by the displacement mechanism. The displacement mechanism is a circular scraper, chain scraper, a mechanism for producing a directed water flow, or circular scraper bridge. A vertically tiltable swimming sludge brake is located in the basin and is tiltable from a usage position that is held at the height of the water surface with a brake plate transverse to the displacement direction of the gutter. A guidance device is arranged to the gutter for leading the swimming sludge brake when it impinges on the guidance device. The guidance device comprises a slider partially led around the gutter or an intended extension of the gutter and/or the swimming sludge brake exhibiting a sliding element that is displaceable along the guidance device. The slider comprises a holder and/or skid plate and/or slide block. The slider exhibits a coefficient of friction with respect to the swimming sludge brake, which falls below the coefficient of friction of steel. The sliding element is a roll that is unreelable along the guidance device or is a slide piece, which exhibits a coefficient of friction with respect to the guidance device, which falls below the coefficient of friction of steel. The swimming sludge brake exhibits a roll in the backward traversing direction and/or the guidance device exhibits a roll in the forward traversing direction, on which the guidance device and/or the swimming sludge brake is unreelable. The guidance device in the backward traversing direction runs out to a bevel acute-angled to the water surface. The sliding element exhibits a bar extending in the displacement direction and/or a holder at proximity to the gutter in the displacement direction and with a curved gap from the gutter increasingly transverse to the traversing direction. The holder of the swivel axis of the swimming sludge brake is curved-away. The two sliding elements are arranged to the gutter, which are spaced from one another transverse to the displacement direction of the gutter. The sliding element exhibiting further distance from the swivel axis of the swimming sludge brake stays far away in front of the gutter in the displacement direction than that of the sliding element exhibiting a shorter distance from the swivel axis. The holder for guiding the sliding element is arranged to the swimming sludge brake in the backward displacement direction, whose distance from the swimming sludge brake reduces while getting closer to the swivel axis. The sliding element carries a rotatable roll at the end. The swimming sludge brake exhibits a mechanism for automatic reverse swivelling of the swimming sludge brake from the alternate position into the usage position. The mechanism for automatic reverse swivelling is a spring mechanism and/or a gravitational force mechanism.