A liquid filtration system comprising a syringe pump comprising a gas chamber and a movable plunger, wherein the gas chamber has an aperture at a first end and the plunger forms a seal within the internal walls of the chamber; a liquid chamber having two openings, the openings positioned at opposite ends of the chamber and the first opening connected to the aperture of the gas chamber; a bioreactor in fluidic communication with the second opening of the liquid chamber; a filter arranged to filter liquid passing between the bioreactor and the liquid chamber, the filter comprising a permeate outlet for removing filtered liquid; wherein, in use, the plunger may be moved in a reciprocating motion causing a corresponding movement of gas which drives liquid alternately between the liquid chamber and the bioreactor such that liquid passes through the filter and filtered liquid may be removed via the permeate outlet.

A filter element comprises a filter media and a restriction indicator device. The restriction indicator device comprises an attachment portion and a movable portion. The attachment portion is attachable to a portion of the filter assembly. The movable portion is movable relative to the attachment portion between a non-buckled position and a buckled position. The movable portion moves from the non-buckled position to the buckled position once a predetermined pressure drop between an upstream side and a downstream side of the movable portion of the restriction indicator device is met.

A disposable dental waste filter device has a body having a tube receiving end having an outlet and a cap receiving end, a cap portion having an inlet and an end for insertion into the cap receiving end, a valve insert assembly for insertion into the body and the cap portion, and a filter assembly positioned within the body.

A disposable dental waste filter device has a body having a tube receiving end having an outlet and a cap receiving end, a cap portion having an inlet and an end for insertion into the cap receiving end, a valve insert assembly for insertion into the body and the cap portion, and a filter assembly positioned within the body.

A filter device for a water-bearing domestic appliance has a flow-through filter housing with waste water inlet, filtered water outlet and filtrate outlet, at least one panel filter and a mounting therefor in the filter housing, wherein the panel filter has a mesh width and an angle to the horizontal, and a filtrate chamber in the filter housing for collecting filtrate. The panel filter, the waste water inlet and the filtered water outlet are arranged relative to one another such that a flow direction for water from the waste water inlet to the filtered water outlet passes through the panel filter. The filtrate chamber is accessible via the filtrate outlet for removing the filtrate from the filtrate chamber, in particular by backwashing. The at least one panel filter is variable in shape to change its mesh width, and/or an angle of the at least one panel filter to the horizontal can be altered by movement of the panel filter, in particular rotation.

A filter device for a water-bearing domestic appliance has a flow-through filter housing with waste water inlet, filtered water outlet and filtrate outlet, at least one panel filter and a mounting therefor in the filter housing, wherein the panel filter has a mesh width and an angle to the horizontal, and a filtrate chamber in the filter housing for collecting filtrate. The panel filter, the waste water inlet and the filtered water outlet are arranged relative to one another such that a flow direction for water from the waste water inlet to the filtered water outlet passes through the panel filter. The filtrate chamber is accessible via the filtrate outlet for removing the filtrate from the filtrate chamber, in particular by backwashing. The at least one panel filter is variable in shape to change its mesh width, and/or an angle of the at least one panel filter to the horizontal can be altered by movement of the panel filter, in particular rotation.

The present invention relates to a filtering panel (100) for a disk filter and a disk filter for water purification, comprising a metal filter cloth (16, 116) such as a stainless steel filter cloth, pre-tensioned in both warp and weft directions and fastened to a frame (10, 110) comprising a peripheral portion (11, 111), which is integral with an inner grillwork (12) and which divides the inner area of the peripheral portion (11, 111) into fields (15, 115). The frame (10, 110) comprises a plastic material reinforced with glass fibers or carbon fibres such as polypropylene loaded with fibreglass in an amount of at least 20 weight percent. Each field of the grillwork (12, 112) has an area not exceeding 10% of the inner area of the peripheral portion (11, 111). The pre-tensioning of the filter cloth (16, 116) in both directions is from at least 20% of the yield stress of the cloth (16, 116). Further the present invention relates to a disk filter comprising said filtering panels (100) and method of making said filtering panel (100).

A separation recovery system for separating and recovering an object to be separated includes a metal porous membrane which has a first principal surface and a second principal surface facing the first principal surface and has a plurality of through-holes extending between the first principal surface and the second principal surface, a supply device which supplies a first fluid containing the object to be separated from the first principal surface of the metal porous membrane toward the second principal surface, and a backwash device which supplies a second fluid containing a plurality of particles larger than a size of the plurality of through-holes of the metal porous membrane in a direction from the second principal surface of the metal porous membrane toward the first principal surface.

A pod assembly for use in a beverage machine is provided. The pod assembly includes a container and a filter disc that is detachably coupled to the container. The container includes a base, a side wall having a lower rim coupling the side wall to an outer perimeter of the base, and a flange coupled to an upper rim of the side wall and extending radially outward from the upper rim. The filter disc includes a central portion with multiple central openings, an inclined portion with multiple secondary openings, and an outer flange situated at a perimeter of the inclined portion and having a substantially square shape.

A recirculating aquaculture system using a biofloc fermenter and aquaponics may include a breeding water tank that breeds farmed fish, a drum filter that filters breeding water drained from the recirculating aquaculture system; an automatic filtration system in which the breeding water of the drum filter is moved and purified; a biofloc fermentation system that supplies and mixes oxygen to backwash water of the automatic filtration system; and a plant cultivation system that cultivates plant with the breeding water mixed with stable and high-concentration oxygen moved from the biofloc fermentation system.