Abstract: The present invention provides a multi plate screw press sludge dewatering machine and a helical shaft thereof. The multi plate screw press sludge dewatering machine includes fixed rings, movable rings, the helical shaft, a sludge inlet tank and a sludge discharging tank; the helical shaft adopts a variable diameter variable pitch helical shaft, a lead angle arrangement sequence of a helical blade of the whole helical shaft is gradual reduction from the sludge discharging tank to the sludge inlet tank, and the lead angle arrangement sequence is gradually reduced from 16°-22° to 6°-14°; a pitch of the helical shaft is gradually increased along a direction from the sludge inlet tank to the sludge discharging tank; a diameter of a shaft body of the helical shaft is gradually increased along with a direction of the sludge discharging tank from a ? position of a shaft length; and blockage prevention plates are arranged on two sides of the bottom of the helical blade.

Abstract: According to one aspect, a diffuser apparatus includes a first pipe having a first plurality of openings formed therein, the first pipe defining a first passageway that is adapted to receive a first portion of debris that is discharged from a well; a first housing within which the first pipe extends, the first housing comprising a first wall and a first outlet formed therein; and a first region formed between the first pipe and the first housing, the first region in communication with the first passageway via the first plurality of openings; wherein the first plurality of openings are circumferentially and axially spaced along the first pipe to pass the first portion of the debris from the first passageway to the first region; and wherein the first outlet is sized such that the first portion of the debris exits the first region via the first outlet.

Abstract: According to one aspect, a diffuser apparatus includes a first pipe having a first plurality of openings formed therein, the first pipe defining a first passageway that is adapted to receive a first portion of debris that is discharged from a well; a first housing within which the first pipe extends, the first housing comprising a first wall and a first outlet formed therein; and a first region formed between the first pipe and the first housing, the first region in communication with the first passageway via the first plurality of openings; wherein the first plurality of openings are circumferentially and axially spaced along the first pipe to pass the first portion of the debris from the first passageway to the first region; and wherein the first outlet is sized such that the first portion of the debris exits the first region via the first outlet.

Abstract: Systems, apparatus, methods, and articles of manufacture provide for resuspending and/or collecting blood and/or other types of cells in solution. In one embodiment, cells may be recovered from used surgical sponges and/or other types of surgical articles.

Abstract: Systems and methods for separating fluids from drill cuttings, specifically, shakers that incorporate modifications including vacuum systems and/or partitions and methods of operating such shakers to affect a high degree of fluid separation. The systems and methods are effective across a variety of screen sizes, vacuum flows and vacuum designs. The systems are also particularly effective in assisting in the separation of gases from drilling fluids.

Abstract: The disclosed apparatus for extracting material from liquid comprises a transport member comprising at least one continuous loop configured to pass through a continuous orbit. The material adheres to at least a portion of the continuous loop and a scraping member urges against a portion of the continuous loop to remove at least some of the material. The apparatus can be a harvester that includes a frame. A first conveyor drum for engaging the transport member can be supported at the first end of the frame. A second conveyor drum can be supported adjacent the second end of the frame and also engage the transport member. The continuous loop can extend between the first conveyor drum and the second conveyor drum and frictionally engage at least a portion of each of the respective outer surfaces the drums.

Abstract: An automatic strainer assembly for straining a slurry comprises an inlet for receiving the slurry, a horizontally disposed strainer body in fluid communication with the inlet, and a rotatable strainer member received within the body having an inner surface and an outer surface. The strainer member defines a plurality of passageways for strained fluid to pass therethrough. A scraper is positioned substantially adjacent to and contacting the outer surface of the strainer member for removing material from the outer surface of the strainer member. A collection vessel is positioned substantially below the body for receiving material scraped from the outer surface of the strainer member. A helical member is mounted on an internal shaft or auger is located within the strainer member for contacting the slurry to increase mixing and promote flow of the slurry through the system.

Abstract: A method of improving nitrification in a wastewater treatment plant is provided. The method comprises the steps of a) providing a trickling filter effluent water basin having biological filter media placed on a support platform positioned at least three feet above a bottom of the basin; and (b) contacting the filter media with the wastewater. Nitrification (removal of ammonia by conversion to nitrate) can be improved at least 30% as compared to a trickling filter without the invention.

Abstract: A process for making a hot beverage, such as coffee or tea, includes placing ground coffee or tea into a filter, inserting the filter into a filter basket to support the filter with respect to a reservoir that is to receive a brewed beverage; introducing water into the filter; and repeatedly deforming the filter to alter its shape as water passes through the filter and ground coffee or tea en route to the reservoir. A device for making a hot beverage includes a drive and a filter basket. The filter basket defines a filter basket chamber for receiving an associated filter. The filter basket includes a movable component operably connected to the drive and movable for deforming the associated filter. The movable component is operable between a first operating position where the filter chamber has a first dimension and a second operating position where the filter chamber has a second dimension that is smaller than the first dimension.

Abstract: An automatic strainer assembly for straining a slurry comprises an inlet for receiving the slurry, a horizontally disposed strainer body in fluid communication with the inlet, and a rotatable strainer member received within the body having an inner surface and an outer surface. The strainer member defines a plurality of passageways for strained fluid to pass therethrough. A scraper is positioned substantially adjacent to and contacting the outer surface of the strainer member for removing material from the outer surface of the strainer member. A collection vessel is positioned substantially below the body for receiving material scraped from the outer surface of the strainer member. This collection vessel can include a transport member for returning this scraped material to an initial slurry supply for reprocessing thereof. An outlet is provided in fluid communication with the horizontal strainer body to expel the strained slurry.

Abstract: A horizontal belt filter incorporates a filter web, a belt carrying the web in a substantially horizontal plane, at least one fluid removal member disposed above the web upstream of a rake device. The fluid removal member may comprise a channeling dam in conjunction with at least one fluid guide disposed at an end of the dam and adjacent the web and the belt for receiving liquid runoff channeled to the guide by the dam. The fluid removal member may also comprise a suction bar and associated fluid removal means, and a rake member disposed above the web on a downstream side of the fluid removal member. The fluid removal member may include at least two linear or straight bars each disposed at an acute angle relative to a respective edge of the filter web, the linear bars being connected to one another to form a V-shaped composite bar having an apex at an upstream side of the direction of belt travel.

Abstract: A horizontal belt filter incorporates a filter web, a belt carrying the web in a substantially horizontal plane, at least one fluid removal member disposed above the web, at least one fluid guide disposed at an end of the fluid removal member and adjacent the web and the belt for receiving liquid runoff channeled to the guide by the fluid removal member, and a rake member disposed above the web on a downstream side of the fluid removal member. The fluid removal member may include at least two linear or straight bars each disposed at an acute angle relative to a respective edge of the filter web, the linear bars being connected to one another to form a V-shaped composite bar having an apex at an upstream side of the direction of belt travel.

Abstract: A differential rate rotary thickener; a power detector which is disposed in a sludge receiver tank for thickened sludge thickened in the differential rate rotary thickener; a discriminator which receives an electric signal for a thickened sludge concentration (X) detected by the power detector and which calculates and discriminate the data; a first controller which receives an instruction signal being a discriminated result in the discriminator and which operates an outer cylinder driving machine and a screw driving machine; a ratio setter which receives a discriminated signal of the discriminator and which increases or decreases a chemical feed rate (?) of flocculant stepwise; and a second controller which receives an instruction signal from the ratio setter and which operates a flocculant-feeding pump are provided. Thickening of sludge is performed by controlling the chemical feed rate (?), a rotational speed (S) of a screw, and a rotational speed (C) of an outer cylinder screen.

Abstract: A subsurface wave action harnessing system includes a seabed mounting plate adapted for securing to a seabed, a wing having generally opposed first and second wing surfaces extending between a first and second wing ends, the second wing end being pivotably mounted to the seabed mounting plate such that pivoting motion about a pivot axis generally parallel to the mounting plate is imparted to the wing by subsurface wave action acting on the first and second wing surfaces, and a drive arm pivotably connected to the wing to convert the pivoting motion into reciprocal motion. An electrical generator, water purifier or other wave action load can be driven by the drive arm.

Abstract: System and method for removal of metals from aqueous solutions. Contactors for contacting aqueous solutions are formed of sorbents of metal oxides processed from metal containing solutions. Metal containing solutions are mixed with heated aqueous oxidizing solutions and processed in a continuous process reactor or batch processing system. Combinations of temperature, pressure, molarity, Eh value, and pH value of the mixed solution are monitored and adjusted so as to maintain solution conditions within a desired stability area during processing. This results in metal oxides having high or increased pollutant loading capacities and/or oxidation states. Contactors formed of sorbents processed according to processes of the invention capture or removing target pollutants from drinking water or other residential or industrial aqueous streams.

Abstract: The present invention provides a system for sludge treatment which transfers sludge into a dewatering device while maintaining the sludge density at a predetermined level constant suitable for dewatering the sludge even when the density of the precipitated sludge varies, thus improving the sludge treating efficiency and sludge dewatering efficiency, and reducing the amount of a coagulant to be used. In the system for sludge treatment, a sludge concentration device is installed in a mixing flocculation tank. Thus, the sludge is mixed with the coagulant and flocculated in the mixing flocculation tank to produce flocs and a supernatant, while the supernatant is directly discharged from the mixing flocculation tank. Furthermore, the amount of the supernatant is controlled to maintain the desired density of the flocs to be transferred to the dewatering device. Thus, the dewatering device can be stably operated.

Abstract: A dry change water filter assembly is provided. The filter assembly includes a filter head including a water by-pass valve, and a filter body configured to removably attach to the filter head. The water by-pass valve is actuated by at least one of attaching the filter body to the filter head and removing the filter body from the filter head.

Abstract: To provide a solid-liquid separator in which a treatment object such as sludge can be transported without clogging, liquid can be efficiently separated from the treatment object, and a maintenance operation can be easily conducted. Movable plates 12 and fixed plates 13 are disposed alternately, two screws 21, 22 are disposed in recess sections 14, 15 formed in the movable plates 12 and fixed plates 13, parts of blade sections 25, 26 of the two screws 21, 22 overlap each other, the two screws 21, 22 are rotary driven, and the liquid is discharged from the gap between the movable plates 12 and fixed plates 13, while the treatment object is being transported. When the movable plates 12 are replaced, the two screws 21, 22 are lifted up and then the movable plates 12 are pulled up and replaced.

Abstract: Systems and methods for extracorporeal processing of blood or other body fluid for the treatment of conditions, such as sepsis, autoimmune disease, or toxemia related to kidney failure, liver failure, or drug overdose are provided. In an extracorporeal treatment system, a fraction of a body fluid is passed into a treatment fluid, at least a portion of which is then passed through a sorbent suspension reactor for treatment by a sorbent suspension. The treatment fluid circuit can be maintained at a fixed volume, which enables accurate fluid balance between the patient and the extracorporeal circuit. Some or all of the treatment fluid, optionally also containing nutrients and/or therapeutic agents, is returned to the patient. In a peritoneal dialysis system, dialysate is passed into a patient's peritoneal cavity, recovered from the cavity, passed through a sorbent suspension reactor in accordance with the invention, and returned to the cavity.

Abstract: A self-cleaning/self-purging ceramic, telflon-copolymer composite filter capable of continuous and/or intermittent cleaning and suitable for installation within a reaction or precipitation vessel. The filter can be cleaned either continuously or intermittently by ultra sound vibration and/or backpressure within the filter system. This invention is appropriate for use in industrial, pharmaceutical, commercial and municipal processing and/or wastewater treatment applications where the removal of undesired contaminants is desired.

Abstract: Device and process for separation of absorbent/floating material from product mixes by means of float/sink separation with a float/sink separator which exhibits a separator tank filled with a liquid separating medium, in which context there are provided devices for generation of a surface flow in the separating medium, which propel the absorbent/floating material as a floating fraction from a pickup point of the product mix to an output point for the floating fraction, along the surface of the separating medium, at such a speed as to inhibit absorption of the separating medium.

Abstract: A fine solids separator 10 including a hollow housing 12 having a generally cylindrical wall 11. Located within the housing 12 is a cylindrical screen member 15 that is preferably formed of expanded metal mesh. The screen member 15 encloses a chamber 22 to which a flocculated sewage is delivered by means of an inlet duct 23. Located within the chamber 22 is an impeller 26 which at least aids circulation of liquid within the chamber 22 about the longitudinal axis of the chamber 22. Liquid leaves the chamber 22 via the screen member 15 and an outlet 25 extending from an outlet chamber 24 located between the member 15 and housing 12.

Abstract: An arrangement comprising a filter cylinder (1) composed of an approximately horizontally extending alternately superposed array of fixed plates (8) having circular or approximately circular openings, and annular floating plates (9) having geometrically similar openings (13) slightly larger in diameter than the openings in the fixed plates and also having circular outer peripheries, with small filtration clearances defined, the row of openings in the fixed plates defining a cylindrical space having a fixed inner peripheral contour (3), it being arranged that when the row of openings in the floating plates is positioned outside the cylindrical space, at least two equi-level regions in the lower portion of the outer periphery of the floating plate are exposed beyond the outer edge of the fixed plate, a screw (2) extending through the cylindrical space, and eccentric shafts (12) contact-wise supporting the exposed outer peripheral portions of the floating plates and eccentrically rotated, so as to swing the floa

Abstract: An object of the present invention is to provide a compact solid-liquid separator having a high water surface loading which can limit pollutant's outflow even when flocs are insufficiently pelletized.

Abstract: A screw press type filter which comprises an alternately superposed arrangement of annular fixed plates (10) and annular movable plates (11), a filter cylinder (2) defining a fixed cylindrical space (12) by a row of openings of the fixed plates with both end portions of a screw (5) passed through this cylindrical space extending to inlet and outlet chambers (1, 3), and mechanisms (15, 16) for turning the movable plates in accordance with the rotation of the screw also provided, wherein the volumes of the spaces between adjacent ridges of the screws in the filter cylinder are reduced gradually from an inlet toward an outlet so that such a volume decrease corresponds to a gradual decrease in the water content of an object material being processed.

Abstract: A process and device for the filtration of solid-liquid mixtures, in particular, solid-liquid suspensions with readily sedimenting substances, uses a filtration device such as a rotary filter optionally operating at an overpressure and in a pressure vessel. The process primarily comprises producing a movement in addition to the natural or usual filtration movement of the or in the mixture. Conveniently, a filtration device and, in particular, with rotary filters in a pressure vessel, includes a partly open feeding device, in particular, a feeding pipe for the supply of mixture or suspension, and a device for additionally influencing the natural or usual filtration movement of or in the mixture or suspension for generating an additional flow of the mixture.

Abstract: The invention relates to a process for the separation, in particular filtration of liquids and solids from solid-liquid mixtures, such as from a mineral, ore, coal or sludge suspensions of contaminated earth. The processing space of the filtration apparatus is submitted to overpressure and includes a collector container for solid-liquid mixture, a pressure filter, a discharge system and container for condensate and solid matter. The separation or filtration takes place at an overpressure and at an elevated temperature, preferably 40.degree. C. to 300.degree. C., conveniently 60.degree. C. to 200.degree. C., preferably about 150.degree. C. The pressure filter device communicates with a source for a heated medium.

Abstract: Disclosed is an apparatus for refining waste water. The apparatus includes a housing having an inlet for receiving the waste water and an outlet for delivery of refined water; a cylindrical drum member rotatably mounted in the housing, the drum member having a radial thickness t between inside and outside surfaces thereof, a multiplicity of circularly cylindrical passages being formed in the drum member, the passages having a passage diameter d of approximately 0.75 inch, at least a portion of each passage terminating with the outside surface at a corner radius r of not more than approximately 0.002 inch; a vent for admitting air into the housing; and a drive for rotating the drum to a peripheral speed of at least 1000 feet per second, whereby molecules of the waste water are physically separated from the contaminants for forming the refined water, the refined water flowing from the outlet.

Abstract: A solid-liquid separator comprising a number of stationary rings arranged with spaces left therebetween, a number of floating rings each disposed movably in the spaces between the stationary rings and a screw conveyor provided in the inner space of the stationary and floating rings. The screw conveyor is driven in rotation to convey sludge water introduced into the space, and while being conveyed, only a water portion thereof is discharged to the exterior through the minute gaps between the floating and stationary rings. The motion of the floating ring prevents clogging of the solid portion in the minute gaps.

Abstract: A rotary filtering apparatus basically comprises a tank having inner surfaces comprising an upper part which is cylindrical and a lower part which is conical, wherein a diameter thereof decreases toward the lower part of the tank. A sintered metallic filter is centrally disposed in the tank, and a filter rotating mechanism is provided for rotating the sintered metallic filter in one direction. A fluid supply unit supplies polluted water (W1) to the inside of the tank, and a nozzle unit supplies high-pressure water (H) to the tank. A fluid suction unit draws clean water (W2) out of the central portion of the sintered metallic filter. A storage tank is mounted to the lower part of the tank, for storing therein particles separated from the polluted water (W1).

Abstract: A filtration apparatus specifically intended for removing particulate contaminants from commercial laundry waste water has at least one porous mesh-like filter bag coupled between an inlet manifold for receiving waste water containing particulate contaminants and an outlet manifold for discharging the particulate contaminants separated from the waste water. The filter bag is agitated by a paddle, so as to prevent the mesh-like material of the filter bag from being clogged. Also disclosed is a method for filtering waste water containing particulate contaminants.

Abstract: The invention is directed to a filter device for the removal of coarse components from a liquid component used in the manufacture of plastic materials. The filter device has a hollow housing in which a rotor is mounted. The rotor is provided with agitator blades which comb out any dead-flow zones.

Abstract: Sieve bend for separating particles of differing size in a liquid slurry. The bend structure defines a passage having an inlet end and a discharge end, with a throat of decreasing cross sectional area at the discharge end of the passage, and a sieve screen for receiving slurry flowing from the discharge end of the passage. The throat is formed in part by a movable member, with means for adjusting the position of the movable member to vary the cross sectional area of the throat and means for temporarily moving the movable member to an open position to clear debris from the throat. The sieve screen is mounted in a housing associated with the bend structure, and the housing is vibrated in a resonant manner to dislodge material from the screen. A repulping box is positioned midway along the screen for supplying additional liquid to the slurry as it passes over the screen.

Abstract: In the inventive method and apparatus for the continuous discharge of water and fine particles from a suspension, particularly fibrous pulp, the pulp or suspension is thickened without forcing the removal of water through a relatively thick, uncontrollably gathered fiber mat. In the method, the suspension to be thickened is fed into a filtering chamber, the suspension is continuously mixed for equalizing consistency differences, the liquid is continuously removed from the suspension through a filter and the thickness of a fiber mat which forms on the filter surface is controlled by subjecting the mat to shear stresses. In a thickening apparatus for practicing this method, at least one of co-operating surfaces--i.e. the filtering surface (8) and its counter-surface (10)--is provided with loosening members (12) for non-mechanically limiting the thickness of a fiber mat forming on the filtering surface and thereby preventing the uncontrolled formation of such a mat on the filtering surface (8).

Abstract: This present invention relates to a method of dehydrating a wet sludge. The wet sludge which is subjected to a preliminary dehydration by gravity dehydration or the like, is pelletized by a pelletizer, and obtained pellets of the sludge are subjected to compression dehydration with a pair of endless filter fabrics.

Abstract: The present invention relates to a method and apparatus for the continuous discharge of water from suspension, especially from fibrous pulp, whereby pulp is caused to thicken without having the water to be removed through a thick uncontrollably gathered fiber mat.In accordance with the invention the suspension to be thickened is fed into a filtering chamber, the suspension is formed as a layer that is continuously being mixed for equalizing the consistency differences, the liquid is continuously removed from the suspension and the thickness of the fiber mat being formed on the filter surface is controlled by subjecting said mat to shear stresses.The above described method is realized by an apparatus, in which at least one of the co-operating surfaces, the filtering surface (8) and its counter surface (10), is provided with means (12) for non-mechanically limiting the thickness of a fiber mat on the filtering surface, whereby a uncontrolled formation of a fiber mat on the filtering surface (8) is prevented.

Abstract: A fluid filter is disclosed which includes a casing defining a fluid chamber with inlet and outlet apertures to and from the chamber to respectively conduct unfiltered fluid to the chamber and filtered fluid from the chamber. A flow path is defined within the chamber and a filter is interposed in the flow path substantially normal to the direction of flow of the fluid in the chamber. The filter includes a screen having a covering of a filter aid, such as diatomaceous earth, on an upstream side of the screen. The filter is regenerated by reciprocating the screen relative to the casing in a path corresponding to the path defined by the direction of flow.

Abstract: Filter apparatus where two or more chambers are each provided with an inlet 23, 26, 29, 32, and outlets 25, 28, 31, 34 and means 2, 27, 30, 33, for removing substances retained in the filter. It is desirable that the filter apparatus be suitable for separating liquid components of a mixture of liquids.

Abstract: In known worm centrifuges comprising a solid bowl and a sieve bowl, a cleaning and predewatering of the solids/liquid mixture occurs in the solid bowl when dewatering solids/liquid mixtures and an after-dewatering of the solids occurs in the following sieve bowl. In general, a relatively good cleaning and dewatering effect is achieved with such previously-known worm centrifuges comprising a solid bowl. According to the invention, the after-dewatering effect in the sieve bowl can be quite substantially increased in that the conveyor worm is provided with agitator elements in the region of the sieve bowl, the agitator elements immersing into the solids layer. As a result thereof, in particularly, a circulation of the solids layer is achieved in the sieve bowl in a very advantageous manner and, as a result thereof, the after-dewatering of the solids before discharge from the worm centrifuge is very substantially improved.

Abstract: The sampling device for chemical, in particular biochemical process technics, consists of a sterilizable container in which a magnetic stirring system is accommodated whose agitator beam may be adjusted in height also in operation. Fluid flows through a tangential inlet near the bottom to be discharged through an outlet provided in the upper end wall. Beneath the filter membrane there is an extremely small dead space through which the filtrate gets to the filtrate outlet. The lower end of the agitator arm is designed as a pointed flow break-away edge which, in case of rotation, generates an alternating pressure field migrating over the membrane. The device is particularly characterized by short response times and by a long service life due to the fact that without a substantial shearing, the filter membrane is kept free from deposits.

Abstract: A method and device is disclosed for the release and separation of substances such as parasites or parasite eggs from meat. In the method, meat is agitated with pepsin and filtered through a series of at least two filters, the last of which retains the parasites or parasite eggs. The device includes a reactor which tapers downwardly, and which has in its lower part an outlet valve connected via a conically widening part with a separator device. The separator device includes a cylindrical connecting piece which accepts holder rings for holding one or more filters or sieves in releasable connection.

Abstract: A filter bag is provided with an integral flap for agitating a liquid which is being filtered to thereby inhibit particulate matter from collecting on the filter bag and clogging it during a filtering operation.

Abstract: A filtration apparatus comprises a tiltably mounted container having a liquid permeable filter bottom, a wall opposite such bottom, and an inverted neck extending inwardly from that opposite wall. A power shaft extends through the inverted neck into the container and carries a mixing implement in the container. A guide bearing for the power shaft is located in the inverted neck. A drive for the mixing implement is supported on the container wall opposite the filter bottom for driving the power shaft. A lifting mechanism connected to said power shaft is also supported by that opposite wall for axially displacing the power shaft and mixing implement in said container. A support bearing at one side of the container and the frame has an apertured part rotatable with the tiltable container. Conduits are conducted through the apertured part for angular movement with the container, thereby avoiding a tangling of lines.

Abstract: A particulate solids conveying and draining device, for mounting in a solids outlet wall, comprising a funnel-shaped rotor with particulate solids scooping members attached thereto. Each particulate solids scooping member comprises a paddle scooping portion leading to a liquid draining, particulate solids spilling, rib portion. In operation, the rotor is rotated so that the particulate solids scooping members scoop a slurry of the particulate solids and, on rotation, drain liquid therefrom through liquid return ports to the center of the funnel-shaped rotor and back to the slurry. When particulate material reaches its angle of repose on a particulate solids scooping member, it tumbles across and off the rotor on the other side of the outlet wall to that at which the slurry is situated.

Abstract: A gas filter is formed from two uniformly spaced nesting screens extending along a serpentine path, with the space between them filled with granular filtering material. Each screen has laterally spaced areas curved in one direction lengthwise of the serpentine path and alternating with laterally spaced areas curved in the opposite direction and integrally joined thereto to thereby provide the screen with a continuous curvature from end to end of the serpentine path.

Abstract: In process for the separation of liquids from suspensions by means of at least one filter layer, on one side of which a suspension is fed and solids accumulate, and on the other side of which separated liquid is carried away, there is given an improved clearing of the feed side filter surface (ZFF) and thus a lengthened operation time until maintenance of the filter layer, through a flow movement (P.sub.1, P.sub.2) in the suspension chamber (SPR) with movement components oscillating in the normal direction in relation to the filter surface (ZFF), preferably through a suspension flow oscillating between filter surfaces (ZFF) lying opposite each other. An apparatus for the separation of liquids from suspensions makes possible such an improved operation through the suspension-drive device (AV.sub.1) with a plurality of surface elements (FE.sub.1, FE.sub.2) in the direction of movement and which can be flowed around transversely thereto (FIG. 5).

Abstract: Method and apparatus for the liquid treatment of filter cakes formed as a layer on a moving filter web. The method comprising removing portions of the cake from the web by agitators having vanes which break up part of the cake on the filter and move the portions into a cover over the agitators where treatment liquid is injected to treat the portions removed from the web. The treated portions are then returned to the moving web at substantially the same place from whence they were removed.

Abstract: A continuous rotary vacuum drum filter with improved suspension means for an oscillatable agitator frame structure operating in the filter vat to keep pulp solids in suspension, featuring a non-rigid stress compensating suspension connection between the agitator frame structure and the supporting torsion bearings comprising a hinge linkage connection between a torsion bearing housing and the respective end of the agitator structure arranged whereby the hinge axis extends at right angles to the oscillatory axis of the agitator structure. A removable hinge pin is provided to permit disconnection of the torsion bearings from the agitator structure and actuating means are pivotally connected to the hinge linkage for oscillating the agitator structure.

Abstract: A rotary filter apparatus includes a tank for containing a slurry to be filtered. A rotary drum is mounted for rotation about a horizontal axis. The drum has a filter surface which extends into the slurry, so that the filtrate may be withdrawn from the interior of the drum. An agitator in the bottom of the tank includes a vane mounted below the drum for rotation about a horizontal axis. The vane is driven to reciprocate through a driven angle about its rotational axis.