Abstract:
The present invention provides a fluidizing unit (1) for use in a vessel desanding system, comprising a discharge pipe (2) and a supply duct (3), the discharge pipe comprises a discharge inlet (4) and a discharge outlet (5), and the supply duct is formed by a housing (6) arranged around the discharge pipe defining an annular space (7) between an outer surface of said pipe and an inner surface of the housing, the supply duct comprises a pressurized liquid inlet (8) and a pressurized liquid outlet (9), wherein the pressurized liquid outlet, during use, is able to provide a pressurized liquid flow having a substantially elliptic cross-section.
Abstract:
A grit removal system for tanks with a need to remove settled solids (e.g., anaerobic digester tank) is described. The system is especially suitable for a large tank, preferably having a flat floor, and it works well while submerged under a liquid. Specifically, a periphery-driven rack & pinion mechanism drives a shaft to rotate about a center pivot, and scrapes settled solids towards tank periphery, where the solids fall into a pit on the tank floor. A drainage opening inside the pit, when opened by a valve, is used to flush out the solids through a standpipe into a settlement tank for final dewatering and solid disposal. The system is compatible for continuous tank operation, and is useful for stirring tanks requiring periodic sediment removal.
Abstract:
A sand sedimentation tank (10) is provided, the tank (10) comprises a tank body (11), an inlet (12) and an outlet (13), wherein the tank body (11) comprises side walls (14) and a bottom (15), the outlet is arranged in a side wall (11), and the bottom (15) has at least one raised part (16) and/or at least one recessed part (17). A sand separator is further provided, the separator comprises a grading unit (30), a particle collector unit (40), and the sand sedimentation tank (10) connected in series. A method for separating mixture of solid particles is further provided. The solid particles comprise first solid particles and second solid particles, wherein, the density of the first solid particles is lower than the density of the second solid particles; the method comprises: forcing the mixture of solid particles to flow with a solvent, making the second solid particles deposit in the flow process to form a layer (22) of the second solid particles, and forcing the first solid particles to continue flowing with the solvent, wherein, the density of the second solid particles is higher than the density of the solvent.
Abstract:
Eine Anlage (1) zur mechanischen Reinigung von Flüssigkeiten weist einen Behälter (3) zum Abscheiden von Sinkstoffen sowie eine Transportförderein richtung (7) zum Transport der Sinkstoffe zu einer Austragsstelle (9) auf. Der Behälter (3) weist einen Zulauf (15) und einen Ablauf (18) für die Flüssigkeit auf. Im Bereich einer Sohle (5) ist in dem Behälter (3) ein Sammelraum (6) für Sinkstoffe ausgebildet. Der Behälter (3) zum Abscheiden der Sinkstoffe weist wenigstens zwei Kammern (11, 12) auf, wobei wenigstens eine Kammer als belüftete (11) und wenigstens eine als unbelüftete Kammer (12) ausgebildet ist. Bei einem Verfahren zum Abscheiden von Sinkstoffen aus Flüssigkeiten in einem Behälter (3), welcher einen Zulauf (15) und einen Ablauf (18) für die Flüssigkeit und im Bereich einer Sohle (5) einen Sammelraum (6) für Sinkstoffe aufweist, erfolgt die Abscheidung der Sinkstoffe mehrstufig. Wenigstens eine Stufe ist hierbei als belüftete und wenigstens eine weitere Stufe als unbelüftete Stufe ausgeführt.
Abstract:
An apparatus for extracting granular or waxy material (12) from a production vessel (14), typically a separation vessel, is described. The apparatus includes an inlet/outlet (16) for allowing a lance (20) to enter the production vessel (14). The lance introduces a fluid, through a specially shaped nozzle (22), into said production vessel (14) to increase flowability of said granular or waxy material (12) which has settled at the bottom of the vessel (14). The apparatus includes one of more collection vessels (24) connected to the inlet/outlet (16) and is adapted to receive said granular or waxy material (12). In use the production vessel (14), inlet and outlet (16) are maintained under a pressure substantially the same as the working pressure of the production vessel (16) in order that the production vessel (16) can remain in operation during the extraction process. A hydraulic ram (26) for moving the lance (20) and a device (30) for retrieving the apparatus in the event of the lance (20) becoming stuck in the production vessel (14) are also described.
Abstract:
An installation for aqueous granulation of a product, comprising a granulation basin (10) fitted for the injection of granulation water and a sedimentation basin (12) that is separate from the granulation basin (10), in addition to a distributor (26) for the introduction of a mixture of water/granules from the granulation tank(10) into the sedimentation basin (12). The sedimentation basin (12) consists of several concentration vats (30) that are suspended in a support structure. The concentration vats (30) are funnel-shaped and lead into an exit line (32) that is provided with an obturation element (33). The sedimentation basin (12) also has a peripheral wall (34) that is provided with at least one overflow outlet (36).
Abstract:
This invention relates to an apparatus and method for processing a liquid containing coarse dust, other floating matters (inclusive oil), sand and soil and other solid matters, separates and removes them and discharges clean water having predetermined water quality. Furthermore, the present invention relates to an apparatus and method capable of removing "more efficiently" large quantities of floating matters and sand and soil from a liquid containing large quantities of floating matters and sand and soil such as heavy rain water. In the apparatus, a rotary cylinder for generating compulsively and positively a whirling flow inside a processing tank is combined with a rotary separation tank and moreover, a floating matter stay is formed on the rotary cylinder itself or on the wall of the rotary separation tank. Therefore, floating matters and organic matters can be removed highly efficiently while carried on a whirling surface flow and sand and soil are sedimented to the bottom of the rotary separation tank by the whirling flow which is generated compulsively and positively, and can be removed highly efficiently.
Abstract:
A grit removal apparatus includes a cylindrical separation chamber above a cylindrical grit storage chamber, with a centrally disposed opening permitting communication between the chambers. An influent flume introduces a liquid stream, narrowed by a baffle, directly into a lower portion of the outer periphery of the separation chamber, and an effluent flume removes a liquid stream through an opening in an upper portion of the separation chamber wall. Outwardly spiraling vanes extend upwardly from the bottom at the center of the separation chamber, and a vertically oriented cylindrical duct is supported above tile vanes. A tunnel is defined in the separation chamber by the portion of the separation chamber wall under the opening to the effluent flume, an upper wall at the bottom of that opening, and an inner arcuate wail concentric with the separation chamber wall portion.
Abstract:
The present invention relates to a sludge discharging apparatus for a settling pond, the apparatus including a flat bottom surface, an outlet at a side thereof, and a sludge collector for pushing settled sludge toward an end portion of the settling pond close to the outlet for collection while moving on the bottom of the pond. The apparatus of the present invention comprises a sludge moving portion disposed at an end portion of the settling pond to induce the sludge to move toward the outlet by spraying pressurized water on the sludge collected by the sludge collector, and a sludge guiding portion installed at an end portion of the settling pond to guide the sludge moved toward the outlet through the sludge moving portion to be discharged through an entrance of the outlet. According to the present invention, the pressurized water sprayed at the sludge moving portion induces the sludge to move toward the outlet of the settling pond when the sludge is collected on a bottom surface of the settling pond by the sludge collector. Here, the sludge that is moved is guided to move toward the entrance of the outlet by the sludge guiding portion, and thus sludge discharge may be made easier and more accurate.