The present invention is directed to a drilling fluid reclaimer. The reclaimer has at least one adjustable screen assembly for providing a leveling filter for reclaimed drill fluid. Used drill fluid is placed at the screen assembly at the front the of the screen assembly. The at least one screen is vibrated to separate large particulate matter from liquid drilling fluid. A second screen is provided for additional filtering. Large particulate matter is expelled by a chute at the back of the screen assembly. Drilling fluid passing through the screen is reclaimed for use with a drilling system.

A method for charging and an underwater station that may include a platform and a first contactless charging element for charging a pool cleaning robot mounted on the platform; wherein when the underwater station is positioned in a pool the first contactless charging element is spaced apart from the bottom and sidewalls of the pool.

A pre-coating filter device includes: a filtration tank comprising a raw water inlet through which raw water flows on one side, and a drain port at the bottom; a top cover coupled to the upper part of the filtration tank and comprising a coupling hole through the middle part; a purified water discharge pipe coupled to the coupling hole of the top cover; a purified water storage space unit coupled to the lower part of the top cover and located within the filtration tank, and comprising a communication pipe connected to the central part; a filter coupling plate body coupled to the lower part of the purified water storage space unit and comprising a plurality of coupling holes through; and a pre-coating filter coupled to the coupling hole of the filter coupling plate body.

A pre-coating filter device includes: a filtration tank comprising a raw water inlet through which raw water flows on one side, and a drain port at the bottom; a top cover coupled to the upper part of the filtration tank and comprising a coupling hole through the middle part; a purified water discharge pipe coupled to the coupling hole of the top cover; a purified water storage space unit coupled to the lower part of the top cover and located within the filtration tank, and comprising a communication pipe connected to the central part; a filter coupling plate body coupled to the lower part of the purified water storage space unit and comprising a plurality of coupling holes through; and a pre-coating filter coupled to the coupling hole of the filter coupling plate body.

Disclosed herein are disc filters for dewatering a fiber suspension. According to a first aspect, the disc filter includes a vessel comprising an inlet positioned in a wall of the vessel, the inlet introducing a fiber suspension into the vessel. The disc filter further includes a rotor shaft comprising a shaft axis of rotation positioned in a shaft plane, wherein the shaft plane is a horizontal plane. At least one filter element may be coupled to the rotor shaft. At least one injector may be positioned in the wall of the vessel, the at least one injector introducing a secondary flow of liquid into the vessel. The at least one injector may be located in the wall of the vessel at an injector elevation angle ?.sub.I that is greater than ?44 degrees and less than or equal to +22 degrees relative to the shaft plane.

A wedging apparatus for a vibrating separator including an outer polygonal surface to secure a screen to the vibrating separator, wherein the outer polygonal surface extends substantially along the length of a screening surface of the vibrating separator is disclosed. A screen for a vibratory separator including a frame having a top surface and a bottom surface, and at least one filter element connected to the frame, wherein the bottom surface comprises a wedge engagement profile is also disclosed. A vibrating separator apparatus including a first side wall, a second side wall opposite the first side wall, a bottom wall connecting the first side wall and the second side wall, a first screen having a top surface and a bottom surface, at least one wedging apparatus disposed along the length of the bottom surface of the first screen is also disclosed.

A wedging apparatus for a vibrating separator including an outer polygonal surface to secure a screen to the vibrating separator, wherein the outer polygonal surface extends substantially along the length of a screening surface of the vibrating separator is disclosed. A screen for a vibratory separator including a frame having a top surface and a bottom surface, and at least one filter element connected to the frame, wherein the bottom surface comprises a wedge engagement profile is also disclosed. A vibrating separator apparatus including a first side wall, a second side wall opposite the first side wall, a bottom wall connecting the first side wall and the second side wall, a first screen having a top surface and a bottom surface, at least one wedging apparatus disposed along the length of the bottom surface of the first screen is also disclosed.

A rotary pressure filter apparatus, a sealing device for use with the rotary pressure filter apparatus, and a process of using the apparatus. The rotary pressure filter apparatus is designed to treat a solid-liquid mixture under pressure in successive work zones. A rotary drum moves compartments containing the solid-liquid mixture through the successive zones. The zones are separated by a sealing member, which is designed to reduce pressure fluctuations as the compartments enter a successive zone.

Nanofiltration of aqueous solutions or other water-based fluids in various applications, such as desalination, dialysis, seawater purification, for example, may be enhanced through precisely controlling a filtration cutoff within graphene oxide nanofilters. By initially compressing and constraining the stacked thickness of multiple graphene oxide layers deposited between porous substrates, the interlayer gap size, and thus, the filtration cutoff may be adjusted and optimized.

The present invention is directed to a drilling fluid reclaimer. The reclaimer has at least one adjustable screen assembly for providing a leveling filter for reclaimed drill fluid. Used drill fluid is placed at the screen assembly at the front the of the screen assembly. The at least one screen is vibrated to separate large particulate matter from liquid drilling fluid. A second screen is provided for additional filtering. Large particulate matter is expelled by a chute at the back of the screen assembly. Drilling fluid passing through the screen is reclaimed for use with a drilling system.