Abstract: Methods and systems for filtration are disclosed. A feed mixture including at least one liquid component and at least one solid component and a flow of gas may be directed to a filter element and filtrate and gas may be passed through a filter medium from a feed fluid side to a filtrate side. The gas loosens and removes foulants accumulating within and on the upstream surface of the filter medium. The gas and filtrate may be separated from one another after passing through the filter medium.

Abstract: A system and method for scouring membranes in a membrane bioreactor system are disclosed. The system employs scouring devices and controls by which pressurized air creates bursts of bubbles that act to scour the membranes of fouling.

Abstract: A flushable filter for use in filtering water in a chemical dispensing system has a screen selectively placed in a water flow passage with water flowing from one side of the screen therethrough to a separate side and then to a filtered water outlet. In a flush mode, water is directed along and past the one side of the screen to flush filtrates therefrom and to a flush water discharge outlet.

Abstract: A quickly cleanable water processor includes a shell, a water pipe, at least one filtering unit and a cleaning unit. The shell includes a space defined therein, a water inlet, a water outlet and an air inlet. The water inlet and outlet and the air inlet and outlet are in communication with the space. The water pipe is disposed in the shell and made with slots in communication with the water inlet. The filtering unit is detachably provided around the water pipe. The filtering unit includes alternately arranged membrane bags and water-guiding discs. The cleaning unit includes an air pump and an air pipe extended into the shell from the air pump through the air inlet. The air pipe includes apertures through which air reaches the membrane bags from the air pipe.

Abstract: The filter apparatus for an incoming liquid which includes a retentate and a permeate includes a housing with a frame and a hollow drum assembly mounted for rotation within the housing. An inlet assembly delivers the incoming liquid under pressure to the drum assembly. A filter assembly is mounted to the inside of the drum. A trough assembly is mounted so as to be in a fluid-tight relationship to the interior surface of the filter assembly as the drum rotates past the trough assembly. A manifold is fixedly mounted and configured to cover successive columns of openings of the drum wall as the drum rotates. Pressurized gas is directed to the manifold, so that as the drum turns, and retentate is collected on the interior surface of the filter, pressurized fluid from the manifold dislodges the retentate into the trough and out an outlet assembly.

Abstract: A cleaning device for cleaning lubricating oil which circulates in a lubricating oil circuit has an intake to be connected with the lubricating oil circuit, through which a part quantity of the lubricating oil circulating in the lubricating oil circuit is to be fed to the cleaning and a return to be connected with the lubricating oil circuit for the returning of the cleaned lubricating oil into the lubricating oil circuit.

Abstract: A method for producing filtered liquid, in particular sterile water, in a filtration device with at least one membrane unit during in each case a production cycle delimited by membrane backwash cycles of each membrane unit, in the production process at least one respective production liquid volume of a production cycle is temporarily stored before release for consumption until a verification of sterility has been obtained for the temporarily stored production liquid volume. In the device a membrane backwash system and a sterile-air test device are assigned to each membrane unit and at least one temporary store having a capacity corresponding at least to the production liquid volume arising during the production cycle is connected downstream.

Abstract: There is provided a cleaning method for a hydrophobic filtration membrane used for membrane filtration of water to be treated such as seawater, discharged water and ballast water including a jelly-like suspended substance and clogged with the suspended substance in the water to be treated, the filtration membrane being brought into contact with limonene-containing water, or backwashing of the filtration membrane with a cleaning liquid being done, and then, a flow having air taken therein being applied onto a surface of the filtration membrane or a water stream from an eductor nozzle being sprayed onto the filtration membrane. There is also provided a membrane filtration apparatus capable of efficiently performing the above-mentioned cleaning method.

Abstract: A wastewater tertiary media filtration system capable of enhancing filtration performance while including backwashing capabilities that eliminate turbidity spikes by using compressed fluid injected to the interior of submerged filter disks is disclosed. A tertiary wastewater treatment apparatus including a filter tank having an inlet and an outlet with a plurality of pile cloth media filter disks disposed in generally parallel relation between the inlet and outlet. Each filter disk preferably includes opposing filter panels disposed in generally parallel spaced relation and supported by a frame. Each filter panel preferably includes a quantity of pile cloth, or other suitable filtration media, sandwiched between opposing mesh panels. The filter disks may be angularly disposed at approximately 55-degrees relative to horizontal so as to maximize settlement velocity in accordance with the advantages of inclined plate technology.

Abstract: A method and apparatus is provided for removing fluids, particularly entrained and/or adherent fluids, from drill cuttings created during the well drilling process. An apron assembly collects drill cuttings and deposits such cuttings on a central rotor having multiple distinct chambers. A first chamber is loaded with drill cuttings. The central rotor thereafter cycles to a second position wherein a pressure seal is formed around the loaded first chamber. An air knife or similar device is used to blast compressed gas at the cuttings in the sealed chamber and force the cuttings against a screen. Solid components of the cuttings remain in the sealed chamber, while liquid components pass through the screen and are collected using an auger assembly. Following such separation, the rotor is cycled again, allowing dried cuttings to empty from the first chamber. The process is repeated for each chamber of the rotor.

Abstract: A filter for use in a washing appliance is disclosed. The filter includes an inlet, an outlet, a filter chamber and a mesh strainer placed between the inlet and outlet. The mesh strainer strains water or liquid flowing into the filter as the water flows into the inlet and out of the outlet. The mesh strainer filters out particulate matter from the flow through the filter. The liquid flowing into the filter flows across the mesh to clean the filter and dislodge at least some of the particulate matter trapped in the mesh. The filter chamber includes at least one baffle within it. The baffle divides the filter chamber into an upper portion and lower portion. The particulate matter washed off collects in the lower portion of the filter chamber due to rotational flows created in the filter due to the filter chamber boundaries and the baffles.

Abstract: A rotary disc filter device comprises a rotary drum and a plurality of disc-shaped filter members secured about the drum. Each disc-shaped filter member has a filtering material disposed on the outside thereof. A guide bar extends longitudinally across the disc-shaped filter members and has a movable carriage mounted thereon. One or more nozzles are operatively connected to the carriage for delivering cleaning fluid onto the filtering materials. The guide bar is rotates between a cleaning position and an adjustment position. When the guide bar is in the cleaning position, the nozzle is disposed adjacent to one of the disc-shaped filter members such that the nozzle is positioned to deliver cleaning fluid onto the filtering material. When the guide bar is in the adjustment position, the carriage is movable along the guide bar without interference from the disc-shaped filter members.

Abstract: A method for purifying fluids and a sedimentation tank, the sedimentation tank includes: a perforated plate spaced from an upper and of the sedimentation tank dividing the sedimentation tank into an upper chamber and a lower chamber; an inlet adapted to inlet fluid into the tank; a first outlet, positioned above the perforated plate for outletting a clarified fraction of the fluid; a second outlet positioned at a bottom of the tank, for outletting a concentrated sludge fraction of the fluid; a pump; and a washing mechanism, positioned at least partially above the perforated plate; wherein the pump is adapted to provide a washing fluid to the washing mechanism when a level of fluid in the sedimentation tank is below a predefined level; and wherein the washing mechanism washes an upper surface of the perforated plate by the washing fluid.

Abstract: A filter for removing at least some impurities (e.g. foreign matter of any nature including a solid, a liquid or a gas) from water or wastewater. A vibrator operably associated with at least a portion of the filter for imparting a vibrational force to enhance any one or more of numerous aspects of the filtration process including: (i) installation of the filter and/or various components thereof; (ii) servicing of the filter and/or components thereof; and, (iii) operation of the filter during a filtration cycle and a cleaning cycle.

Abstract: The present invention is directed to a novel method for cleaning a filter surface using a plasma discharge self-cleaning filtration system. The method involves utilizing plasma discharges to induce short electric pulses of nanoseconds duration at high voltages. These electrical pulses generate strong Shockwaves that disintegrate and dislodge particulate matter located on the surface of the filter.

Abstract: A variable wash flow filter assembly includes a wash velocity control cone movable between a minimal position and a maximum position.

Abstract: The disclosed self-cleaning filtration system and self-cleaning filter solves various problems by replacing a standard filter cartridge with an adapter screwed in place of the cartridge, a filter of limited size with a motor for rotating an inlet cover plate and an outlet cover plate over a body with a plurality of longitudinal channels inside of a circumferential filtration media where the different parts of the media are used alternately in forward and backward flow. In another embodiment, instead of entry and drain openings, the oil is placed directly in contact with each longitudinal channel with the exception of the channel in fluidic communication with the drain opening. The self-filtration system includes a self-cleaning filter used in tandem with an adapter, a decanter, and a series of hoses.

Abstract: A micromechanical filter for microparticles is suitable in particular for filtering pathogenic bacteria and viruses, and comprises a substrate and a perforated membrane permanently connected to the substrate, for filtering out microparticles from a medium while flowing through the membrane, and furthermore a device for removing the filtered-out microparticles from the surface of the membrane. The device for removing the microparticles is embodied, for example, as a heating device, in order to burn the microparticles located on the surface of the membrane. It can also be embodied as an actuator structure for deforming the membrane or as a microinjector for generating a flow parallel to the surface of the membrane.

Abstract: An object is to provide a method and a device for cleaning a filter cloth of a filter press dewaterer that are capable of restoring a filter cloth by effectively cleaning the filter cloth while saving the amount of water used for cleaning without using an acid which requires wastewater treatment. The method is for cleaning a filter cloth of a filter press dewaterer, which dewaters a slurry containing a calcium component, with any one of water, steam, and a mixture thereof. The filter cloth is cleaned by spraying, on the filter cloth to which a tension of 10 to 2000 N/5 cm is applied, any one of: water with a temperature of 100 to 140° C. and a pressure of 50 to 200 kg/cm2; steam with a temperature of 100 to 140° C.; and a mixture thereof.

Abstract: An apparatus of produced water treatment, to be adopted in an in-situ recovery method of producing bitumen from oil sand, the apparatus capable of removing the oil from produced water, the produced water of being left by separating the bitumen from bitumen-mixed fluid having been recovered from the oil sand, the apparatus having: a vessel for receiving the produced water; a submerge type filtration membrane module, installed in the vessel, for filtering the produced water in the condition of the membrane being submerged in the produced water; and a bubble generator for generating bubbles to be forwarded toward the submerged filtration membrane in the produced water.

Abstract: A filter for use with overhead sprinkler irrigation systems is disclosed. The filter includes a hollow cylindrical body, a removable screen, and a manually-actuated plunger adjacent the screen. The plunger is positioned for reciprocal movement through a debris outlet between an open, debris-discharging position, and a closed filtering position. The plunger defaults to the closed filtering position by pressurized water flowing through the body. The water is simultaneously filtered through the screen and passes out a clean water outlet while debris accumulates within the body. The plunger may be manually retracted to the open, debris-discharging position at any time, whereby accumulated debris is flushed out of the body through the debris outlet by residual water flowing therethrough.

Abstract: A system and method for removing and managing water in liquid hydrocarbons is disclosed. The system and method utilize a water absorbent filter, such as one that utilizes super absorbent polymers, cellulose, cotton or other suitable material to remove water from the system that is either present as free water or as dissolved moisture within the liquid hydrocarbon. The super absorbent polymer filter can be regenerated through the introduction of a dried liquid hydrocarbon, through the use of an air drying system, or a combination of both.

Abstract: Apparatus for increasing a concentration of large particles in a mixture which includes the large particles and smaller particles, including a flow chamber, a filtrate accepting chamber, a filtering component separating the flow chamber from the filtrate accepting chamber, the filtering component including a plurality of pores passing therethrough, characterized by further including means for generating a flow of the fluid in the flow chamber, with a flow component in a direction parallel to a surface of the filtering component sufficient to substantially prevent particles from adhering to the filtering component and clogging the pores.

Abstract: A self-cleaning discharge system used with a wastewater treatment system. The wastewater treatment system includes a tank for collecting wastewater while the wastewater typically includes solid particles. The discharge system comprises a housing, a filter positioned in the housing, an effluent discharge apparatus positioned inside the filter, and a venturi effect flushing system positioned proximate to the bottom of the housing. The housing includes a perimeter and at least one intake aperture positioned in the perimeter to accept the wastewater. The filter is shaped to substantially restrict flow of particles into the filter and to the discharge apparatus. The discharge apparatus is in fluid communication with the wastewater in the tank and includes a discharge path to position to transport filtered wastewater outside of the tank. The venturi effect system is in fluid communication with the housing and the tank to return the particles restricted by the filter to the tank.

Abstract: The invention discloses a kind of porous membrane filtration component for treating water, specifically it discloses a kind of suspending porous hollow fiber membrane bundle for treating highly turbid waste water. The component includes some porous hollow fiber membrane yarns and casting heads arranged at both ends of respective yarns, wherein the connections between the said casting heads and membrane filtration module are flexible connections, at least one end of the flexible connection the cast header is connected with a hollow tube or cord, and the membrane bundle hangs on the said membrane filtration module, suspending freely. The invention provides a suspending porous hollow membrane bundle that can effectively remove contaminants adhered to the surface of the membrane yarns, makes its membrane yarns difficult to rupture, has a longer service life, and produces water with steady quality.

Abstract: A method and apparatus for monitoring an underdrain in a filter system for filtering water or wastewater. At least one diagnostic condition relating to the performance of the underdrain is monitored to determine if the underdrain is operating in an acceptable manner.

Abstract: A filter apparatus, particularly for filtering coolant/lubricant from a machining, including a filter tank having an inlet for the liquid to be filtered, an outlet for the filtered liquid and a belt of filter medium adapted to circulate within the filter tank and having a top side and a bottom side. The liquid to be filtered is introduced below the bottom side and is discharged between the top side and the bottom side. The filter material of the bottom side separates the unfiltered liquid from the filtered liquid and prevents floating particles in the liquid from reaching the outlet for the filtered liquid.

Abstract: The present invention relates to a method of removing blood from an extracorporeal blood circuit following termination of a blood treatment session, wherein blood is concurrently removed both from an arterial conduit portion and from a venous conduit portion of the extracorporeal blood circuit. It further relates to a method for recognizing and/or eliminating air inclusions in or from an extracorporeal blood circuit and a treatment apparatus as well as a tube system.

Abstract: The invention relates to a method for extracting solids (23; 123) from a suspension (22; 122) containing the solids (23; 123) and suspension liquid (32; 132) in a continuously or virtually continuously operating filter device (10; 110) using a filtering material (26; 126), on the one side of which, the high-pressure side (30; 130), a higher pressure prevails than on its other side, the low-pressure side (42; 142), and which passes successively through a plurality of working zones (I-V; I-IV) of the filter device (10; 110) in a working direction (U), the suspension (22; 122) being supplied to the filtering material (26; 126) on its high-pressure side (30; 130) in a first working zone (I) and being filtered, the suspension liquid (22; 122) flowing through the filtering material (26; 126) on account of the difference in pressure between the high-pressure side (30; 130) and the low-pressure side (42; 142) while at least some of the solids (23; 123) are deposited on the filtering material (26; 126).

Abstract: A method of cleaning a permeable, hollow membrane (6) in an arrangement of the type wherein a pressure differential is applied across the wall of the permeable, hollow membrane (6) immersed in a liquid suspension provided in a vessel (5), said liquid suspension being applied to the outer surface of the permeable hollow membrane (6) to induce and sustain filtration through the membrane wall. The method of cleaning comprising the steps of: suspending the filtration process; while continuing to supply the liquid suspension to the vessel (5); aerating the membrane (6) by flowing gas into the vessel (5) to produce a flow of gas bubbles around the membrane (6) to dislodge at least some of the retained particulate material from the membrane surface; removing liquid containing dislodged particulate material from the vessel (5) during the aerating step and recommencing the filtration process.

Abstract: An apparatus and a method of rejuvenating capillary filters (2) using both gas agitation of the liquid about the surface of capillary filters (2) and backflushing the capillary filters (2) is disclosed. The gas agitation loosens residue on the surface of the capillary filters (2) and the backflush further loosens residue in an inside-out direction through the walls of capillary filters (2). The agitation of the liquid aids in dispersion, suspensions and transportation of the releases residue form the capillary filters (2).

Abstract: A water treatment apparatus includes a raw water supply tube, mixed raw water stream jet nozzles each communicating at one end thereof with the raw water supply tube and having at the other end thereof a raw water outlet from which mixed stream of raw water and air is jetted out, a filtering tank housing a filter layer disposed below the mixed raw water stream jet nozzles with a predetermined distance between the surface of the filter layer and the raw water outlet of the mixed raw water stream jet nozzles, a filtered water takeout tube provided in the filtering tank for taking out water filtered through the filter layer, a reverse stream cleaning water supply tube provided in the filtering tank for supplying reverse stream cleaning water to the filter layer, filter layer cleaning jet nozzles each communicating at one end thereof with a filter layer cleaning water supply tube and having at the other end thereof a cleaning water outlet from which cleaning water is jetted out, and an overflow outlet provided in

Abstract: The present disclosure is directed to a filter support having a surface with a plurality of perforations therein. At least one spray bar may be substantially fixed adjacent to the surface of the filter support. A spray bar may include a plurality of nozzles for directing a pressured fluid toward the filter support. The filter support may further include a motor for causing the filter support to move in a cyclical manner while the spray bar directs pressurized fluid toward the filter support.

Abstract: A vertical membrane module unit is allowed to be installed even at a place with a low ceiling. A housing containing a vertical membrane module unit is held by a housing holder. The housing holder holds the housing tiltably such that the housing can be positioned with the longitudinal direction of the membrane module unit being substantially vertical when treated water is extracted, and the housing can be positioned with the longitudinal direction of the membrane module unit being substantially horizontal when the membrane module unit is removed from the housing.

Abstract: The invention relates to a filter for fluids, in particular water, having a filter surface and a rotary spray arm contained in said filter, said arm conducting a flushing medium against the filter surface. To achieve an increase in the throughput capacity of the filter and to improve the flushing of the filter surface, the filter is equipped with a fluid-proof drum motor, which drives at least one spray arm.

Abstract: A self-cleaning assembly comprising an enclosed casing 1 with a movable piston 31 and filters 32,33 therein. The preferred assembly has a casing 1 with a dirty water inlet 5, a first outlet 6 for clean filtered water and a second outlet 7 for the removal of sludge from the casing. The filter assembly is constructed and arranged to provide, in its normal operating mode, a liquid flow path through the filter 32,33 in a first direction between the dirty water inlet 5 and the clean water outlet 6 and, in a cleaning mode, to provide a liquid flow path in a second direction between the dirty water inlet 5 and the sludge outlet 7. In the cleaning mode, the movable member 31 compresses the filters 32,33 during the liquid flow in the second direction and contaminant is released therefrom for removal from the filter assembly via the second outlet 7. In an alternative embodiment, the sludge outlet 7 is omitted and sludge is removed from the casing via the outlet 6.

Abstract: A variable wash flow filter assembly includes a wash velocity control cone movable between a minimal position and a maximum position.

Abstract: The present invention concerns a system for filtering a liquid, comprising a pump designed to be immersed in a reservoir intended to contain a liquid in order to pump it, the pump being provided with a filter able to filter the liquid admitted into the pump. According to the invention, the filtration system comprises a device intended to reduce the clogging of the filter during the functioning of the pump. Thus, the filtration system functions for longer before it is necessary to proceed with its cleaning or replacement.

Abstract: A Reactor (1) for solid phase synthesis comprises a vessel (2), a plurality of filters (3) arranged in the vessel (2) and a plurality of filtrate outlets (4) for evacuating the filtrate out of the filters (3). Each filter (3) is connected to one filtrate outlet (4). The reactor (1) comprises means (3, 4) for delivering a gas into the vessel (2) in a region of the vessel (2) near to the bottom (24) of the vessel (2) and beside the filters (3).

Abstract: An object of the invention is to provide a wastewater treatment system using a superconducting magnetic separator that can wash the magnetic filter efficiently. The system comprises in a bore of a superconducting magnet a removably built-up multiunit magnetic filter consisting of a plurality of single-unit magnetic filters. The multiunit magnetic filter has a total longitudinal length at least equal or greater than that of the superconducting magnet. During excitation of the superconducting magnet, a single-unit magnetic filter is removed from the upstream side (sewage side) of the multiunit magnetic filter by pushing in another single-unit magnetic filter from the downstream side (clean water side), and washed and returned to the downstream side again.

Abstract: An apparatus for separating solid matter from a liquid stream, where the apparatus includes a generally cylindrical separation panel surrounding an interior space, which is oriented so as to have a substantially vertical longitudinal axis. The separation panel has a plurality of vertically and horizontally spaced openings which are adapted to remove solid material larger than a predetermined size from liquid passing through the separation panel. The apparatus also includes a chamber surrounding the separation panel and providing a chamber portion into which the liquid passes after passing through the separation panel. The apparatus may further include an inlet positioned below the separation panel, through which the liquid stream is delivered from a bottom opening of the separation panel to the interior space and which is arranged such that the liquid circulates about the axis so as to pass the separation panel, and an outlet extending from the chamber portion.

Abstract: Provided are a treatment apparatus for removing fluorine content from water to be treated and a method of treating water to be treated using the same. Water to be treated, containing fluorine, is introduced into a treatment tank over a first path. Slaked lime is added to the water to be treated over a second path. Calcium chloride is added to the water to be treated over a third path. Thus, the fluorine contained in the water to be treated combines with calcium forming slaked lime or calcium chloride, thus yielding calcium fluoride, which is immobilized. When a filter film immersed in the water to be treated is used for filtration, the calcium fluoride contained in the water to be treated is concentrated.

Abstract: The invention relates to a device (1) for providing a melt, in particular a plastic melt. Said device (1) comprises a feed unit (2) for material components, at least one purification unit (4) for the flowing melt, in particular a rotatable screening disc (5), and at least one sensor unit (17; 18; 19; 20; 21) for detecting one or more process parameters. The operation of the purification unit (4) can be influenced with the aid of said sensor unit, based on the filter-specific process data. The inventive device is configured in such a way that at least the type and dosage of the process materials that are supplied via the feed unit (2) and/or the processing parameters of said process materials can be controlled using the detected (17; 18; 19; 20; 21) process parameters and/or the filter-specific process data.

Abstract: There is a method of capturing, removing or collecting the particulate matter from a fluid containing a toxic liquid reaction and particulate matter produced from the reaction. The method includes partly or completely disposing a screen into the toxic fluid. Mixing the toxic fluid allowing the particulate matter to contact the screen. Moving the screen to capture the particulate matter on the screen. Removing the particulate matter from the screen by washing or scraping. There is also a cleaning apparatus to capture, remove or collect particulate matter from a toxic fluid. A cleaning apparatus contains at least a screen and a structure securing the screen. The cleaning apparatus can optionally include a scraping or washing means, a drive means, a flow inducer and a housing structure.

Abstract: A filtering device includes: a fluid-collecting tube; a plurality of positioning trays sleeved around the fluid-collecting tube and stacked one above the other; and a plurality of membranes alternating with the positioning trays. Each of the membranes is sandwiched between an adjacent pair of the positioning trays. Each of the positioning trays includes first and second engaging members. Each adjacent pair of the positioning trays are coupled to each other and are rotatable relative to each other between a first relative position and a second relative position. The first engaging member of each of the positioning trays is engageable with the second engaging member of an adjacent one of the positioning trays.

Abstract: An automated self-cleaning filter device consisting of a controller that operates with a circuit board, microprocessor and electronic components that manipulate valves and pump(s). The aforementioned controller selects the proper position, i.e., open, closed for valves and i.e., on or off, for pump or pumps; the controller also commands and controls the periods of time necessary to achieve proper cleaning of the filter element. The device contains a hollow manifold that can be dimensioned to receive cylindrical, square or rectangular filter element within the central opening. The aforementioned manifold resides inside a sealed housing and supplies liquid to a plurality of nozzles directing pressurized fluid in streams, which face the outer surface of the filter element.

Abstract: Methods and systems for filtration are disclosed. A feed mixture including at least one liquid component a flow of gas may he directed to a filter element and filtrate and gas may be passed through a filter medium from a feed fluid side to a filtrate side. The gas loosens and removes foulants accumulating within and on the upstream surface of the filter medium. The gas and filtrate may be separated from one another after passing through the filter medium.

Abstract: The invention relates to a filter element consisting of a molded body of porous concrete, which element is arranged in the water stream of a purification system. In particular, the filter element (10) is a molded pervious concrete layer arranged as a partition between a lower compartment (9) and an upper compartment (11) of a treatment chamber (8), wherein the water inlet (12) opens into the lower compartment (9) and a water outlet (17) issues from the upper compartment (11). The pervious concrete filter layer may contain one or more additives to enhance adsorption of pollutants, such as heavy metal ions, phosphorous, hydrocarbons or other target soluble pollutants.

Abstract: A fluid filter, particularly suitable for high pressure and high volume use, comprises a cylindrical housing (201) having an attachment plate (209) at an inlet end (202) to which is attached a plurality of bundles (303) of fibres (211), with the fibres being left unsecured at their distal end adjacent an outlet (203) of the housing. Between the bundles is provided a balloon (212) which can be distended in order to crush the fibres around the periphery of the housing. In use, a fluid to be filtered is introduced into the inlet end, adjacent to where the fibres are secured. In order to flush the filter the pressure within the balloon is released, and a flushing fluid is passed through the housing in the same direction.

Abstract: A filter module provided with a housing (3) having an inlet (6) for a liquid to be filtered and an outlet (10) for filtered liquid, with a first filter element (7-9, 12) accommodated in the housing (3), in the form of a porous mass provided with a central through-opening, to which the inlet (6) connects, and with a second filter element (1) accommodated in the housing (3) in the form of a number of lengths of tube-shaped filtering membrane (2), which together define a cylinder shape, which cylinder shape, at at least one extremity, between the open-ended filter membranes (2), is filled up with a sealing material, to which extremity the outlet (10) connects. The inlet (6) connects to the central through-opening of the first filter element (7-9, 12), which is surrounded by the second filter element (1), which has the form of a tubular casing obtained by winding from tube-shaped filtering membrane (2).