Provided is a wash press that separates liquids and solids from a waste stream. The wash press includes a tank having a semi-cylindrical shape. The tank has an inlet at a top of the tank for receiving a waste stream, a screen disposed in a portion of a bottom of the tank to permit liquid to pass therethrough, and an outlet for permitting solid materials separated from the liquid to pass therethrough. A rotor extends through the tank for transporting and dewatering the waste material entering the tank. The rotor includes a plurality of helical flights interconnected by paddle members to permit agitating the waste material. The wash press also includes a removable cover that enables the rotor to be lifted vertically, and a removably attached screen to facilitate replacement/repair of the same.

Disclosed are methods for concentrating solids and removing solids from a filter medium. The method includes the step of concentrating first particles of a first solid by removing a fluid stream through a filter medium in a filter. At least some of the first particles become blocking particles that block pores of the filter medium. The method also includes the step of inserting second particles of a second solid into the filter. These second particles scrape, vibrate, agglomerate, or a combination thereof along the filter medium, thus dislodging at least a portion of the blocking particles.

A system for treating wash waste liquid is described, configured for coupling to a wash module of a continuous Tunnel washing machine for the field of Preclinical Pharmaceutical Research, said wash module (12) comprising a wash chamber (25), characterized in that it comprises: a wash tub (22) with a side wall (31) substantially cylindrical in shape, with a tangential liquid suction outlet (33) and a substantially conical bottom, with a wash waste drain point (35) at the vertex of the cone, said tangential suction being adapted to generate a rotational motion of the liquid in said tub, said tub being positioned under said wash chamber (25), so as to receive said wash liquid by gravity; a centrifugal wash pump (21) with an open impeller, adapted to take in liquid from said tangential liquid suction outlet (33); an in-line filter (26) with an internal filter cartridge of the “wedge-wire” type, adapted to filter the liquid coming from said centrifugal pump (21) and deliver it back, filtered, into said wash chamber (25), and comprising a flush valve (27) for discharging the filtering waste.

The cooling device for a power source for a ship propulsion device that pumps up cooling water, from which foreign matters with sizes that cause clogging of a cooling water route have been removed, supplies the cooling water to a cooling water passage (30), and discharges the cooling water to outside after cooling a power source (10) includes: a filtration device (40, 40A, 40B) provided in the cooling water route to filtrate foreign matters remaining in the cooling water, and the filtration device is of a cartridge type that incorporates a filter (45, 72) for filtration disposed in a main water passage (P1) and a valve member (46, 66) configured to open and close a bypass water passage (P2) and that is configured such that in a case in which clogging occurs in the filter, the valve member opens to cause the cooling water to flow via the bypass water passage.

A plant growing system has a number of modular units arranged together on a flat surface in side of a growing room. The modular units have rigid boxes therein with vertical holes therethrough inside of which is located a growing soil. Water and nutrients are pumped from a reservoir to a distributor located in a growing soil of the rigid boxes as called for by moisture sensors, which activates a controller to turn ON a delivery pump. When moisture and nutrients need to be removed from an impermeable flexible liner located below the modular units, the controller turns ON a return pump, which pumps the excess water and nutrients back to the reservoir.

A plant growing system has a number of modular units arranged together on a flat surface in side of a growing room. The modular units have rigid boxes therein with vertical holes therethrough inside of which is located a growing soil. Water and nutrients are pumped from a reservoir to a distributor located in a growing soil of the rigid boxes as called for by moisture sensors, which activates a controller to turn ON a delivery pump. When moisture and nutrients need to be removed from an impermeable flexible liner located below the modular units, the controller turns ON a return pump, which pumps the excess water and nutrients back to the reservoir.

There are provided a rainwater filtering device and a monitoring system therefor. The rainwater filtering device includes: a filtering unit including a strainer therein; a first overflow preventing unit supported by a compression rod and installed above the filtering unit; a pre-treating unit installed in front of an inlet of the filtering unit in order to pre-treat rainwater introduced into the filtering unit; and a second overflow preventing unit supported by a compression rod and installed above the pre-treating unit.

Embodiments of this application relate to the field of lithium battery production technologies and disclose a slurry filtering apparatus and a coating system. The slurry filtering apparatus may include a rotating filter element and a gravity filter. The gravity filter may be provided with a feed port and a first discharge port. A height of the feed port on the gravity filter may be greater than that of the first discharge port on the gravity filter. The rotating filter may be connected to the feed port and is configured to provide a positive-pressure filtered slurry to the gravity filter. The first discharge port may be configured to convey a slurry filtered by the gravity filter to a coating apparatus.

A food processing apparatus includes a pressure vessel defining a compartment having an inlet end for receiving food product and an outlet end for discharging food product, an open-top screen mounted within the compartment and movable relative to the compartment between a first position, for food processing, and a second position, to facilitate cleaning, a rotatable auger mounted such that at least a portion of the auger is within the screen, the auger being operable to advance food product within the compartment from the inlet end of the pressure vessel toward the outlet end, and a transfer mechanism including a conduit in communication with the compartment, a fluid discharge positioned substantially within the conduit, and a pressurized fluid source in communication with the fluid discharge and operable to propel a fluid through the fluid discharge to move food product through the conduit.

The present invention provides a multi plate screw press sludge dewatering machine and a helical shaft thereof. The multi plate screw press sludge dewatering machine includes fixed rings, movable rings, the helical shaft, a sludge inlet tank and a sludge discharging tank; the helical shaft adopts a variable diameter variable pitch helical shaft, a lead angle arrangement sequence of a helical blade of the whole helical shaft is gradual reduction from the sludge discharging tank to the sludge inlet tank, and the lead angle arrangement sequence is gradually reduced from 16°-22° to 6°-14°; a pitch of the helical shaft is gradually increased along a direction from the sludge inlet tank to the sludge discharging tank; a diameter of a shaft body of the helical shaft is gradually increased along with a direction of the sludge discharging tank from a ⅓ position of a shaft length; and blockage prevention plates are arranged on two sides of the bottom of the helical blade. The helical shaft in the present invention is specially designed, so that the pitch is more reasonable, a helical angle is gentler, frictional resistance when sludge passes through the helical shaft may be effectively reduced, and phenomena of shaft blockage and shaft sticking of the sludge may be reduced.