Abstract:
The invention relates first of all to a method for removal of clarified liquid from a liquid basin (N), such as a clarification basin or like, with an apparatus, by means of which clarified liquid is being removed by using a liquid exhaust arrangement (2) and a collecting arrangement coupled therewith. The liquid exhaust arrangement comprises one or more exhaust passages (2a1), existing beneath surface (y) of the liquid basin one after another in longitudinal direction (s) of the liquid basin and comprising a profile with an essentially closed cross section, such as a pipe, channel or like, each passage having a perforation (R) to make possible flow of liquid inside the same. Functioning of the liquid exhaust arrangement is being controlled according to the circumstances, such as due to surface alteration in the liquid basin, by adjusting the amount of liquid to be removed by the exhaust passage (2a1) by changing a flow cross section area beneath the surface (y) of the liquid basin of an open overflow edge (2a2y) of exhaust organs (2a2), being coupled with the perforation (R) in the exhaust passage and having a cross section expanding towards outer end thereof, which is carried out by turning (w) the exhaust organs (2a2) with respect to longitudinal axis (p1) of the exhaust passage (2a1). The invention also relates to an apparatus operating according to the method.
Abstract:
A grit removal unit for a wastewater system including a grit removal chamber with a substantially annular vertical wail. A horizontal annular ring above the chamber bottom extends inwardly from the annular vertical wall, with an influent channel extending into the chamber beneath the ring and an effluent channel above the rim and extending out of the chamber. The influent and effluent channels both have inner side wails with a curved portion, with both curved portions extending through an arc of at least 90 degrees within the chamber annular vertical wall.
Abstract:
A lamella settler (1) comprises a basin (10) with an inlet for liquid to be cleaned and a sludge outlet and with a plurality of outlet openings (12) for cleaned liquid. Each of a plurality of outlet flumes (16)connects to one of the plurality of outlet openings (12). A plurality of lamella plates are (18) attached to adjacent flumes (16). By providing a plurality of transverse beams (14)above the basin (10), wherein the outlet flumes (16)are supported by the beams (14), an improved lamella settler is achieved which is easier to manufacture and assemble and which has improved characteristics.
Abstract:
A settler (201) for decanting mineral slurries comprising a tank (203) having a side wall (205), a bottom (207) and a top (209), an outlet (211) for a thickened slurry at the bottom of the tank, a first overflow outlet (213) for withdrawing an overflow stream of a clarified liquid, a slurry inlet means (215) for introducing fresh slurry into the tank, the slurry inlet means (215) having a slurry opening (261) through which fresh slurry joins a body of slurry in the tank, and a stirrer (217) having a vertical axis (239) around which the stirrer rotates or reciprocates, in said settler the slurry opening (261) is displaced laterally relative to said vertical axis of the stirrer and said slurry inlet means (215) comprises mixing means (251). A separation installation comprising the above settler and a method for separating a clarified liquid from a thickened slurry of a mineral slurry.
Abstract:
A device for collecting clarified water intended to be fitted to a basin (1), said device comprising: . at least one mobile float (3) movable in vertical translation and provided with at least one water collection member (4); . means for collecting and discharging (5) the collected water; . means for guiding said mobile float (3) in vertical translation; . means for securing (7) to said basin; characterised in that a vertical central guide bar (6) is disposed according to the central axis of gravity of said device and extends into said means for collecting and discharging (5).
Abstract:
The invention relates to a method of loading a loading space (1) of a vessel with dredging materials. The method comprises a) loading a slurry comprising of dredging materials and water into the loading space (1), and b) generating at least one pressure wave through the slurry inside the loading space (1) to enhance the formation of a settled bed (5) of the dredging materials.
Abstract:
This invention relates to an integrated clarifier and flash tank, and more particularly but not exclusively, to an integrated clarifier and flash tank suitable for use in the sugar production process. The integrated clarifier and flash tank includes a clarifier vessel for receiving the liquid to be clarified, and a flash tank arrangement located at least partially inside the clarifier vessel. The clarifier vessel includes a conical bottom that terminates in an outlet for the removal of solids, and at least one liquid outlet towards an upper end zone thereof. The flash tank arrangement has an inlet for receiving a liquid to be clarified, a flashing compartment inside which flashing of the liquid occurs, and an outlet for discharging the liquid to be clarified into the clarifier vessel.
Abstract:
Es werden ein Verfahren und eine Vorrichtung zum Sedimentieren von Sedimentpartikeln in einem Verfahren zur Gewinnung von Dieselöl aus einem in einem Kreislauf bewegten flüssigen Stoffgemisch, umfassend Öl, kohlenwasserstoffhaltige Reststoffe und Katalysatorpartikel, mittels katalytischer druckloser Verölung (KDV) beschrieben. Dem Stoffgemisch werden Sedimentpartikel entzogen, indem es über eine spiralförmige Leiteinrichtung geleitet wird. Die kohlenwasserstoffhaltigen Reststoffe werden stromabwärts hinter der spiralförmigen Leiteinrichtung in eine Gittereinrichtungeingegeben, die von dem Stoffgemisch umströmt und/oder durchströmt wird.
Abstract:
A mixer settler [1] comprises a settling tank [30], an organic launder [40] provided within the settling tank [30], an aqueous launder [50] provided within the settling tank [30], and an isolated aqueous weir box [70] which is positioned positioned internally or externally relative to an outer profile of the mixer settler [1], the isolated aqueous weir box [70] being at least partially operatively isolated from the settling tank [30] by the aqueous launder [50]. The isolated aqueous weir box [70] comprises an adjustable weir [76] which separates a recycle chamber [72] from an advance chamber [74] therein. The organic launder [40] is operably connected to an organic advance effluent pipe [80], and the aqueous launder [50] is operably connected to the isolated aqueous weir box [70]. The organic launder [40] may be operably connected to an isolated organic weir box [60] which is separate from the isolated aqueous weir box [70], and may further comprise an adjustable weir [66] which separates a collection chamber [62] from an advance chamber [64]. Also disclosed, is a kit for modifying or fabricating a mixer settler [1], as well as a solvent extraction process.
Abstract:
An apparatus for settling sediment from a liquid collected in a drainage pit, including a plurality of spaced apart deflectors which are configured to be inclined in use, the deflectors comprising: an uppermost deflector having an aperture formed in an upper portion thereof so that liquid pooling in the pit can flow through the aperture, a second deflector arranged in use to be at least partially below the uppermost deflector, the second deflector opening into a sediment reservoir at a lower end thereof so that liquid flowing along the second deflector can settle in the sediment reservoir, and a third deflector extending upwardly from the sediment reservoir, the third deflector having an aperture formed in an upper portion thereof so that liquid pooling in the sediment reservoir can flow along the third deflector and through the aperture to exit the pit.