The present invention relates to a filtering apparatus (1) for the filtration of liquids, in particular water. It comprises, inside a container (11), a first chamber (50) intended to receive liquid to be filtered, a second chamber (54) intended to receive filtered liquid, a first porous wall (51) and a second porous wall (53) which delimit a filtration chamber (40) between them. The first porous wall (51) divides the first chamber (50) from the filtration chamber (40) and the second porous wall (53) divides the second chamber (54) from the filtration chamber (40), so that the filtration chamber (40) is interposed between the first chamber (50) and the second chamber (54). A granular filter material (4) is housed in the filtration chamber (40) and is enclosed between the first porous wall (51) and the second porous wall (53). The first chamber (50) receives the liquid to be filtered at a first height (H1) which is at a higher altitude than the second height (H2) at which the second chamber (54) discharges the filtered liquid. The first chamber (50), the filtration chamber (40) and the second chamber (54) are flanked to each other and, in a section between the first height (H1) and the second height (H2), are all intersected by a plurality of horizontal planes (P) parallel to each other. In use, the liquid to be filtered passes from the first chamber (50) to the second chamber (54) substantially by gravity and through the filtration chamber (40) with a flow path having a horizontal component.

A cleaning system for filter beds uses the existing permanent infrastructure of a water filtration plant. Treatment fluids of opposite pH are introduced into a pair of filter cells that are separated by a gullet. Each filter cell contains a filter bed. One filter cell receives an acidic treatment fluid and the other receives an alkaline treatment fluid. After treatment is complete, the treatment fluids from each filter cell are simultaneously drained into the gullet, where mixing and neutralization occur. The resulting spent treatment fluid has an intermediate pH that allows it to be safely drained into a wastewater sewer.

A filtration device comprising a media basket, a baseplate, and a canister. The media basket is affixed to the baseplate. The canister has a cavity therein and is detachably coupled with the baseplate to enclose the media basket. The media basket contains a porous filtration material that efficiently removes contaminants from liquid. The device is configured to establish a first siphon to convey liquid from outside the device into the canister cavity through a canister pipe when a liquid level outside the filtration device is higher than the top of the weir in the canister pipe and configured to establish a second siphon to convey liquid from canister cavity through the top of a center riser pipe and out an outlet pipe when the first siphon has been established and the liquid level outside the filtration device is higher than the top of the center riser pipe.

A filtration system includes a plurality of underdrain blocks arranged in a side-by-side configuration so as to define a gap therebetween, the gap configured to receive grout. Each underdrain block includes a top wall, a bottom wall, and a plurality of side walls connecting the top wall and the bottom wall. A grout bridge is arranged in the gap between adjacent underdrain blocks so as to form a grout seal between the grout bridge and adjacent side walls of the adjacent underdrain blocks. The adjacent sidewalls each include a rib, each rib defining a slot. The grout bridge is arranged in adjacent slots of the adjacent sidewalls of the adjacent underdrain blocks. A method of arranging a filtration system and a grout bridge are also disclosed.

Systems, devices, and methods for providing nutrient removals in an up flow filtration storm water system for treating water to very high clean levels using filtration media. A filtration media can be supported by a screen above a floor in a vault allows for incoming storm water to pass into a void space above the floor into the screen and filtration media and then out an outlet to the vault. The filtration media can include recyclable and/or natural particles. Layers of river rocks can be placed on top of and below the filtration media. The captured debris can drop to the floor. The long lasting filtration media can be cleaned by being backwashed.

A tissue processing apparatus, a filter and a method for processing tissue therefrom #! The problem to be solved is to provide a portable apparatus for processing harvested fat to form a good quality graft that does not clog syringes, and the problem is solved by providing an apparatus as in the present invention with a filter that is inclined to the base of the apparatus and comprises of plurality of elongated protrusion that are structured at an angle on the surface of the filter and blocks the fibres when the harvested fat moves on the inclined surface of the filter, thereby filtering the harvested fat and avoiding clogging of syringes.

A tissue processing apparatus, a filter and a method for processing tissue therefrom #! The problem to be solved is to provide a portable apparatus for processing harvested fat to form a good quality graft that does not clog syringes, and the problem is solved by providing an apparatus as in the present invention with a filter that is inclined to the base of the apparatus and comprises of plurality of elongated protrusion that are structured at an angle on the surface of the filter and blocks the fibres when the harvested fat moves on the inclined surface of the filter, thereby filtering the harvested fat and avoiding clogging of syringes.

A flow cap may include an outer ring, an inner ring, an inlet portion, and an outlet portion. The inlet portion may include first portions of the outer and inner rings, and a plurality of arms extending between the first portions of the outer and inner rings, wherein the arms at least partially define an inlet aperture configured to provide flow communication between an inlet port of a filter base and an interior portion of a filter element. The outlet portion may include second portions of the outer and inner rings, and a plate including an outlet aperture providing flow communication between an outlet port of the filter base and an exterior portion of the filter element. The outlet portion may also include a wall, wherein the plate and the wall prevent flow communication between fluid entering the inlet portion and fluid entering the outlet portion.

Systems and methods for treating a stream comprising hydrocarbons and an aqueous-based liquid are provided. The systems and methods may utilize a media composite comprising a mixture of a cellulose-based material and a polymer. In certain systems and methods, the media composite is capable of being backwashed. The stream comprising the hydrocarbons and aqueous-based liquid may be separated by contacting the stream with the media composite. In certain system and methods, the stream comprising the hydrocarbons and aqueous-based liquid may be coalesced by contacting the stream with the media composite.

A filter assembly includes a housing and a first filter, a second filter, and a heat exchanger all positioned in the housing. The filter assembly also includes a first inlet and a first outlet and defines a first liquid flow path. The first liquid flow path may extend within the housing between the first inlet and the first outlet through the first filter and along a first side of the heat exchanger. The filter assembly further includes a second inlet and a second outlet and defines a second liquid flow path. The second liquid flow path may extend within the housing between the second inlet and the second outlet through the second filter and along a second side of the heat exchanger.