A separating system and method, of which the separating system includes a lower vessel including an inlet configured to receive a mixed fluid comprising a solid and a liquid. The lower vessel is configured to separate at least some of the solid from the liquid so as to produce a partially-separated fluid. The system also includes a first screen vessel configured to receive at least a portion of the partially-separated fluid, the first screen vessel including a first shell, and a first screen that is positioned within the first shell and at least partially removable therefrom, and a second screen vessel spatially oriented parallel to the first screen vessel and configured to receive at least a portion of the partially-separated fluid. The second screen vessel includes a second shell and a second screen that is positioned within the second shell and is at least partially removable therefrom.

In a rake system, a reamer element is attached to a reamer arm, which is movable backward and forward. A pivot axle of the reamer arm is formed on the distal end of a control arm, which is pivotable around a further pivot axle. During forward movement of the reamer arm, the reamer element pushes raked material collected by the rake to a discharge edge at the upper end of the rake. During backward movement of the reamer arm, the control arm is lifted, and the reamer element is moved back at a distance from the rake.

A system includes a casing internally defining a filtering cavity and having an inlet leading into the filtering cavity and configured to be hydraulically connected downstream of a discharge pump and to receive a fluid containing microplastics. The casing also has an outlet configured to deliver the fluid contained in the filtering cavity, from which the microplastics have been substantially removed. A filtering assembly contained in the filtering cavity is crossed by the fluid entering the casing through the inlet and exiting through the outlet, thus internally trapping the microplastics. A compacting assembly is situated in the filtering cavity and configured for collecting and compacting the solid particles trapped by the filtering assembly. A pre-filtering assembly is configured to be fluidically connected upstream of a discharge pump to trap any foreign bodies that may be present in the microplastic-containing fluid.

Systems and methods involving filtration are disclosed. A filtration device includes a first opening, a second opening, and a vortical filter, the vortical filter comprising a rib. The rib may be configured to generate vortices to keep the filtered particles in suspension and to provide a flow path extending from the first opening to the second opening. The filtration device may filter particle from the fluid by cross-flow filtration along the flow path across a filter media surrounding at least a portion of the circumference of the vortical filter. The filtration device may be effective at filters greater than 90% of microplastics by mass when post-filtered to 10 microns when measured using the method of either of Example 1 or Example 2. The filtration device may be effective at filtering particles from the fluid at high flow speeds, such as flow speeds greater than 50 cm/sec or greater than 100 cm/sec.

A filter assembly for filtering a fluid used in an appliance for washing laundry or textile articles and including a filtering element including a filtering surface and enclosing an inlet chamber adapted to receive the fluid and including a first inlet chamber portion associated with a first filtering surface portion of the filtering surface, and a second inlet chamber portion associated with a second filtering surface portion of the filtering surface; a housing adapted to house the filtering element; an outlet chamber defined by a volume between the filtering element and the housing for receiving the filtered fluid resulting from the passage of the fluid from the inlet chamber through the filtering surface of the filtering element; an inlet in fluid connection with the first inlet chamber portion, through which fluid is supplied to the first inlet chamber portion; an outlet; a scraper device operable to rotate about a rotation axis to remove filtered contaminants from the first filtering surface portion during rotation of the scraper device, and to move the removed filtered contaminants away from the first inlet chamber portion; a collection region for collecting the removed filtered contaminants and moved away from the first inlet chamber portion; and a fluid connection device for selectively enabling and disabling a fluid connection between the first and second inlet chamber portions.

Systems and methods involving filtration are disclosed. A filtration device includes a first opening, a second opening, and a vortical filter, the vortical filter comprising a rib. The rib may be configured to generate vortices to keep the filtered particles in suspension and to provide a flow path extending from the first opening to the second opening. The filtration device may filter particle from the fluid by cross-flow filtration along the flow path across a filter media surrounding at least a portion of the circumference of the vortical filter. The filtration device may be effective at filters greater than 90% of microplastics by mass when post-filtered to 10 microns when measured using the method of either of Example 1 or Example 2. The filtration device may be effective at filtering particles from the fluid at high flow speeds, such as flow speeds greater than 50 cm/sec or greater than 100 cm/sec.

A microplastic filter includes a housing including an inlet configured to receive water. The microplastic filter also includes a fine filter disposed to rotate within the housing and configured to filter residues from the water. The microplastic filter further includes an inside wiper disposed within the fine filter. The inside wiper includes a center post disposed along a rotational axis of the fine filter and a helical curved wall spirally extending between the center post and the fine filter, where the helical curved wall is configured to guide a portion of the water to backflow through the fine filter and force away at least some filtered residues from pores of the fine filter to prevent fouling or clogging of the fine filter. In addition, the microplastic filter includes an outside wiper spirally disposed around the fine filter and configured to dislodge other filtered residues from the fine filter as the fine filter rotates.