Abstract: An apparatus for treating slurries, in particular biogenic or industrial slurries, can include at least one treatment rotor which is arranged or can be arranged in the slurry and which rotates or is rotatable about an axis of rotation (R), with treatment elements which project outward, as seen from the axis of rotation (R), and between which interspaces are formed, at least some of the treatment elements having, at—at least one, preferably each—adjacent interspace, in each case at least one treatment edge, preferably at least two treatment edges spaced apart from one another, each of these treatment edges running from the inside outward, as seen from the axis of rotation. Methods for treating slurries are also disclosed, including methods using the apparatus for treating slurries.

Abstract: A filter element has a preferably multilayer structure of a pleated filter medium (3) with a plurality of individual filter pleats (5, 7). Due to an alternating sequence of filter pleats (5) with a first pleat height (h1) and filter pleats (7) with a second pleat height (h2), more effective filter surfaces are available than with filter pleats with a uniform pleat height. Upon throughflow by a fluid to be filtered, a lower surface load for the filter medium (30 and lower passage speed of the fluid are present during filtration. A static loading of the filter medium (3) during operation of the filter is then reduced. A hydraulic circuit has such a filter element (1).

Abstract: A fuel filter for a vehicle may include an upper case with a fuel inlet at a first side; a lower case provided in a structure having a fuel outlet and bonded to a second side of the upper case; and a main filter disposed in an inner space by bonding the upper case and the lower case and filtering fuel, wherein a first auxiliary filter assembly filtering the fuel toward an inner diameter of the main filter is mounted on a first surface of the main filter and a second auxiliary filter assembly filtering the fuel toward a second surface of the main filter is mounted on the second surface of the main filter.

Abstract: A filter cartridge has first and second housing sections joined at a peripheral shoulder to define an interior space. The first housing section includes radially spaced inner and outer side walls connected by a first transition portion to define an annular space. A lock ring is secured to the housing within the annular space. The lock ring includes at least one engagement structure within the annular space.

Abstract: 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.

Abstract: Disclosed herein is a filter for use in connection with a swimming pool or spa. A device is provided that has a tube inlet at the top of a vessel. A lower end of the device is connected directly to an outlet of the filter. The device is designed to divert all or the majority of the fluid to move to the top of the filter before exiting the vessel.

Abstract: A filter device includes a housing with an end part and a side wall and containing an axially arranged array of filter elements, such as ceramic elements. An inlet in the end part supplies fluid to the filter elements and an outlet in the side wall is provided for transporting filtered fluid from the housing, the side wall of the filter device being provided with a cleaning duct for supplying cleaning fluid to the filter elements via the side wall. The cleaning duct 6 includes a distal channel portion 15 having a relatively small diameter D1 and a proximal portion 16 adjacent the side wall having a relatively large diameter D2. A number of partitions 36, 37 extend in the proximal portion from a position at or near the sidewall towards the distal channel portion 15 at an angle (?) to a center line 20 of the cleaning duct 6.

Abstract: A method for treating dialysate solutions used in dialysis wherein dialysate is treated in an early part of a dialysis treatment session by external infusion of bicarbonate solution into the dialysate circuit to eliminate the need for bicarbonate requirements in concentrates used for preparation of precursor dialysate (priming) solutions and/or for a solid bicarbonate layer in a sorbent cartridge. Dialysate is treated in a latter part of a dialysis treatment session by introduction of sterile dilution water to reduce sodium concentration in the dialysate. The method provides a more efficient and reduced use of dialysate fluids, electrolytes, sorbent cartridge materials, equipment scale, or any combinations of these, while maintaining purity standards and applicable physiological ranges for bicarbonate, sodium, and other dialysate solution components over the course of a dialysis treatment session.

Abstract: A pleated media pack includes a section of media configured into a tube defining an interior volume and an open opening at one end. A ratio of the pleat depth to a diameter of the opening is greater than 0.2. At least some of the pleats at one end of the media pack are inverted. In some examples, the pleats include major pleats alternating with minor pleats.

Abstract: A pleated media pack includes a section of media configured into a tube defining an interior volume and an open opening at one end. At least some of the pleats at both ends of the media pack are inverted. In some examples, the pleats include major pleats alternating with minor pleats.

Abstract: A parallel assembly (2; 11; 51) of chromatography column modules (3a,b,c; 13a,b,c; 53a,b,c, 90a, b), the assembly having one common assembly inlet (15; 55) and one common assembly outlet (17; 57), each column module comprising a bed space (29) filled with chromatography medium and each column module comprises integrated fluid conduits which when the column module is connected with other column modules are adapted to connect the bed space (29) of the column module with the assembly inlet (15; 55) and the assembly outlet (17; 57), wherein the total length and/or volume of the fluid conduit from the assembly inlet to one bed space together with the length and/or volume of the fluid conduit from the same bed space to the assembly outlet is substantially the same for all bed spaces and modules installed in the parallel assembly.

Abstract: Methods for extracting oil from a multiphasic liquid are provided. The method can comprise: introducing the multiphasic liquid to a plurality of nanoparticles, and allowing oil in the multiphasic liquid to be adsorbed by the polymeric shell. The nanoparticles comprise a core and a polymeric shell. The method can further comprise removing the nanoparticles from the multiphasic liquid, and/or recovering the oil adsorbed by the polymeric shell after removing the nanoparticles from the multiphasic liquid. The multiphasic liquid can comprise oil and water (e.g., oil and sea water, such as sea water in an area of an oil spill), stomach fluid and a food-grade oil (e.g., olive oil, vegetable oil, canola oil, or a mixture thereof), or other multiphasic liquids having an oil component.

Abstract: A method or process for treating wastewater containing high organics, silica, boron, hardness, and suspended and dissolved solids. The method includes degasifying the wastewater for the removal of dissolved gases and thereafter chemically softening the wastewater. After the chemical softening step, the wastewater is directed through a media filter or membrane which removes additional solids and precipitants. Thereafter the wastewater is directed through a sodium ion exchange that further softens the wastewater. The effluent from the ion exchange is directed through a cartridge filter and the effluent from the cartridge filter is directed through one or more reverse osmosis units. At a selected phase of the process, prior to the wastewater reaching the reverse osmosis unit or units, the pH of the wastewater is raised and maintained such that the pH of the wastewater reaching a reverse osmosis unit is at a pH greater than 10.5.

Abstract: An edge closure system is presented herein wherein a portion of the closure edge of the filter bags leading to the outlet pipe aperture are provided with mating snapping closures, allowing to sealingly close the length of the edge of the fabric leading to the outlet pipe aperture simply by engaging the male and female components of the snapping closures. Moreover, an outlet pipe closure system is also presented herein using a combination of a tongue mounted internally to one of the sides of the fabric forming the bag in a manner to be wrappable around at least a corresponding portion of the outlet pipe, and a fabric hood mounted externally and overlapping both sides of the bag at the outlet pipe aperture, which cooperates with the tongue to seal the interface between the outlet pipe and the bag when held in position.

Abstract: In a filter element, plates are provided in a manner of covering ends of an outer cylinder and an inner cylinder. A packing having a substantially hollow annular plate shape is provided on the plate. A filtering material is provided between the outer cylinder and the inner cylinder. The packing is abutted against a surface of the case in parallel with the plate and a cylindrical outflow portion having a surface parallel to the inner cylinder.

Abstract: A substrate for positioning a separation membrane and a collection membrane for separating and collecting plasma is disclosed. The substrate includes an inner flexure disposed proximate to a first peripheral portion of the substrate and an outer flexure disposed surrounding at least a portion of the inner flexure. The inner flexure is formed from a plurality of first slots in the substrate and the outer flexure is formed from a plurality of second slots in the substrate.

Abstract: A parallel assembly (2; 11; 51) of chromatography column modules (3a,b,c; 13a,b,c; 53a,b,c, 90a, b), the assembly having one common assembly inlet (15; 55) and one common assembly outlet (17; 57), each column module comprising a bed space (29) filled with chromatography medium and each column module comprises integrated fluid conduits which when the column module is connected with other column modules are adapted to connect the bed space (29) of the column module with the assembly inlet (15; 55) and the assembly outlet (17; 57), wherein the total length and/or volume of the fluid conduit from the assembly inlet to one bed space together with the length and/or volume of the fluid conduit from the same bed space to the assembly outlet is substantially the same for all bed spaces and modules installed in the parallel assembly.

Abstract: Described are water-on-water valves for use in reverse osmosis filtration systems. The water-on-water valves are regulated by the pressure in a product line, which contains fluid from a product line of the filter module and/or the product side of a water-on-water storage tank. Exemplary valves are shuttle valves that are regulated by the pressure downstream of the product side of a reverse osmosis filter module. The valves may comprise a piston within a housing, and an end of the piston may have an enlarged diameter relative to the maximum diameter of the remainder of the piston. The body of the piston may have sections of differing diameters, where the smaller diameter sections form flow channels, or the body may a diameter that is substantially the same along its length in conjunction with gratings and flow channels.

Abstract: A parallel assembly (2; 11; 51) of chromatography column modules (3a,b,c; 13a,b,c; 53a,b,c, 90a, b) connected in a rigid housing (21; 61), the assembly having one common assembly inlet (15; 55) and one common assembly outlet (17; 57), each column module comprising a bed space (29) filled with chromatography medium and each column module comprises integrated fluid conduits which when the column module is connected with other column modules in the rigid housing are adapted to connect the bed space (29) of the column module with the assembly inlet (15; 55) and the assembly outlet (17; 57), wherein the total length and/or volume of the fluid conduit from the assembly inlet to one bed space together with the length and/or volume of the fluid conduit from the same bed space to the assembly outlet is substantially the same for all bed spaces and modules installed in the parallel assembly.

Abstract: A liquid treatment system includes: a filter casing including a structural wall, a first screen formed though the structural wall, and a second screen formed though the structural wall; and a liquid treatment cartridge configured for placement in the filter casing between the first and second screens. The liquid treatment cartridge includes a cartridge casing having an upper end and a lower end, and an inflatable seal surrounding the cartridge casing at an intermediary position between the upper end and lower end. A method of servicing a groundwater treatment installation includes: vertically displacing a liquid treatment cartridge within a filter casing having a structural wall, a first screen formed though the structural wall, and a second screen formed though the structural wall.