A feed system for a rotary screen separator has a feed housing and at least one feed lid movably attached to the feed housing. The feed housing has a feed chamber, an inlet opening, and at least one outlet opening. The feed chamber defines a proximal portion adjacent to the inlet opening and a distal portion at least a portion of which is adjacent to the at least one outlet opening. A cross-sectional area of at least a portion of the proximal portion is greater than a cross-sectional area of the distal portion. The at least one feed lid is movably attached to the feed housing such that the at least one feed lid covers the at least one outlet opening in a closed position, and does not cover the at least one outlet opening in at least one open position.

A feed system for a rotary screen separator has a feed housing and at least one feed lid movably attached to the feed housing. The feed housing has a feed chamber, an inlet opening, and at least one outlet opening. The feed chamber defines a proximal portion adjacent to the inlet opening and a distal portion at least a portion of which is adjacent to the at least one outlet opening. A cross-sectional area of at least a portion of the proximal portion is greater than a cross-sectional area of the distal portion. The at least one feed lid is movably attached to the feed housing such that the at least one feed lid covers the at least one outlet opening in a closed position, and does not cover the at least one outlet opening in at least one open position.

A screen assembly (10) for a horizontal screen machine has a screen body (12) diverging axially from an inlet end (13). A base wall portion (15) mounts the screen body (12) for rotation and includes eight substantially radial webs (16). An annular wall portion (21) is located adjacent the inner end (13) and includes drain passages (24) adapted to drain discontinuities in a bonding layer comprising a moisture cure polyurethane sealant/adhesive overlying the annular wall portion (21). Wear resistant tungsten carbide elements (26) include a plurality of apertures (27) extending through a wear face to a bonding face. Voids (32) in the discontinuous bonding layer (31) provide fluid interconnection between the apertures (27) and the drain passages (24). A replaceable screen member (33) is releasably secured at an inner ring frame (22) and an outer ring frame (36) of the screen body (12).

A screen assembly (10) for a horizontal screen machine has a screen body (12) diverging axially from an inlet end (13). A base wall portion (15) mounts the screen body (12) for rotation and includes eight substantially radial webs (16). An annular wall portion (21) is located adjacent the inner end (13) and includes drain passages (24) adapted to drain discontinuities in a bonding layer comprising a moisture cure polyurethane sealant/adhesive overlying the annular wall portion (21). Wear resistant tungsten carbide elements (26) include a plurality of apertures (27) extending through a wear face to a bonding face. Voids (32) in the discontinuous bonding layer (31) provide fluid interconnection between the apertures (27) and the drain passages (24). A replaceable screen member (33) is releasably secured at an inner ring frame (22) and an outer ring frame (36) of the screen body (12).

Methods and apparatuses for screening are provided. Embodiments include a screen basket apparatus for screening material, comprising a grid frame having a plurality of openings arranged in a lattice and a plurality of screening cartridge assemblies affixed to the grid frame to cover the respective openings of the grid frame. The screening cartridge assembly includes a case and a screen assembly fitted into the case, and may be affixed to a set of transversal member of the grid frame. The case may be formed of a single injection molded piece integrally formed by injection molding one of a polyurethane or a thermoset polymer. The screening elements together form a generally continuous screening surface across the exterior of the grid frame, which reduces blinding and is resistant to wear and tear.

A cylindrical filtration filter includes a cylindrical filter main body. The filter main body is constituted by at least two split filters. Each of the split filters has an arc shape in cross section. Each of the split filters includes a filter element for filtration and side frame bodies provided along side portions of the filter element. The side frame body of one of the two split filters adjacent to each other includes a first facing surface having an uneven shape. The side frame body of the other split filter includes a second facing surface having an uneven shape complementary to the first facing surface. The first facing surface and the second facing surface are fitted to each other when the filter main body is assembled.

A filter device is configured to filter a liquid. The filter device includes a drum sized to receive the liquid and a plurality of filter panels coupled to the drum to define a plurality of discs. The liquid passes through at least a portion of one of the discs. Each filter panel includes a perimeter frame that defines a panel normal flow area and a filter media coupled to the perimeter frame. The filter media may be adapted to include a plurality of pleats.

A self-contained mobile wet waste material separator and dewatering for waste water treatment facilities to facilitate the dewatering of solid waste debris that accumulates in screening points within the transfer and treatment process. The mobile wet water waste separator has a screen drum separator rotatably mounted on a wheeled trailer with integrated multiple dewatering and transfer continuous conveyor belts. The wet waste material separator and dewatering provides for dewatering of separated solid waste removed from waste treatment wet wells that define intermediate transfer stations within a municipal waste water collection and treatment system via a collection and transfer vacuum truck.

A rotating drum screen system for separating solids from an influent material stream includes a housing having an influent inlet, a solid discharge end and an area between the influent inlet and the solid discharge end. A hollow portion of a drum screen positioned lengthwise in the area between the influent inlet end and the solid discharge end receives influent. The drum screen includes a filter screen that retains at least a portion of the solids within the hollow portion of the drum screen and which produces a liquid effluent that is discharged from an outer surface of the drum screen. The retained solids are removable from the drum screen via the solid discharge end. A head box is disposed within the hollow portion of the drum screen and has a plurality of fluid flow channel dividers dividing and directing an influent stream outwardly against the drum screen.

A rotating drum screen system for separating solids from an influent material stream includes a housing having an influent inlet, a solid discharge end and an area between the influent inlet and the solid discharge end. A hollow portion of a drum screen positioned lengthwise in the area between the influent inlet end and the solid discharge end receives influent. The drum screen includes a filter screen that retains at least a portion of the solids within the hollow portion of the drum screen and which produces a liquid effluent that is discharged from an outer surface of the drum screen. The retained solids are removable from the drum screen via the solid discharge end. A head box is disposed within the hollow portion of the drum screen and has a plurality of fluid flow channel dividers dividing and directing an influent stream outwardly against the drum screen.