Abstract: A fine particle separating apparatus includes a first filter having a first mesh, the first filter having a first section and a second section with the first mesh therebetween and rotatably mounted in the first filter part. A first flow path allows sludge to flow into the first filter, a second flow path allows an effluent from the first filter party to flow therein, and a third flow path is provided to discharge the effluent from the second flow path to the outside. At least a portion of the effluent flowing into the second flow path is provided to the first filter part in a fluid loop along a fourth flow path, and a fifth flow path is defined in the first section to allow the effluent from the fourth flow path to pass through the first filter part. A storage tank and a pump are also provided.

Abstract: Tools, devices and systems that include a generally cylindrical, hollow shaft, and a suction canister are provided with advantageous interconnectivity features and functions that enable ease of manufacturing, lowered manufacturing costs, and allow for a platform of different shaft embodiments and canister embodiments that may be manufactured in different combinations to form an array of unique instruments. The interconnectivity may be irreversible or reversible, and the connection features maintain an air tight seal between the components. Tools, devices and systems are also provided that include collection functionality that can be employed to manipulate the volume of tissue collected while using a tissue collection feature/function. This may be undertaken to restrict total volume of the collection chamber in a way that allows for continuous suction flow rate to take place while collecting the desired amount of tissue.

Abstract: Water treatment structures may have at least a first geotextile fabric layer; a second geotextile fabric layer; a third geotextile fabric layer; a first filler layer with plastic particles, arranged between the first and second geotextile fabric layers; and a second filler layer with plastic particles, arranged between the second and third geotextile fabric layers, wherein the geotextile fabric layers and the filler layers are within a housing, and wherein the structure is configured such that contaminated water proceeds sequentially through the first geotextile fabric layer, the first filler layer, the second geotextile fabric layer, the second filler layer, and the third geotextile fabric layer. Methods of treating wastewater may involve passing wastewater, after optional oxygenating and pre-filtering, through such alternating layers of geotextile, preferably nonwoven, and polymer particles.

Abstract: A lid assembly being attached to a pressure vessel includes a filter access cap having a top portion, a bottom portion, and a tubular portion extending from the top portion to the bottom portion to define a throughhole, the top portion having a radial slot. The lid assembly includes a seal plate assembly connected to the bottom portion of the filter access cap and configured to rotate relative to the filter access cap to assist in releasing a pressure from the pressure vessel, and a relief valve for releasing non-atmospheric pressure when opened. Further, the lid assembly includes a seal stem located in the throughhole, wherein the relief valve is mounted in the seal stem, and an arm operatively engaging the relief valve and having a proximal end pivotally secured to the lid assembly, whereby when the arm is pivoted in a first direction the relief valve can be opened.

Abstract: A water filter cartridge is provided for gravity-feed water filtration applications, and includes a granular filter media made from a mixture of titanium dioxide particles interspersed with granular activated charcoal. The granular filter media is placed in a filter housing having an upper inlet opening and a lower outlet opening. A seal may be disposed around an outer periphery of the housing at its upper region, and may include a flange region that flexes upwardly upon insertion of the sidewall into a filter cartridge opening.

Abstract: A medical fluid delivery system and apparatus for remote machine updating and control are disclosed. An example medical fluid delivery apparatus includes a processor and a dialysis fluid circuit including at least one dialysis fluid pump. The processor is configured to receive a disinfection input to begin a disinfection procedure and cause the at least one dialysis fluid pump to perform a disinfection procedure on the dialysis fluid circuit using a disinfection fluid. The processor is also configured to, after the disinfection procedure is complete, start a disinfection timer. When a dialysis input is received before the disinfection timer reaches zero, the processor enables a dialysis treatment to be performed. When the disinfection timer reaches zero before the dialysis input is received, the processor prevents the dialysis treatment from being performed until the disinfection procedure is performed again.

Abstract: A method for degassing flowable fluids, in particular liquids used for hydrogen storage, uses a device including a desorber (12) that can be filled with fluid to be degassed and through which the fluid can flow. A circulation pump (48) circulates the fluid during a degassing process in the desorber (12). A vacuum pump (38) generates a vacuum in the desorber (12) during a filling step with fluid and for discharging the gas from the desorber (12) during the degassing step. At least one sensor (44a, 44b) measures the pressure in the desorber (12) and/or a dwell time. A control unit ends the degassing process when a predefined pressure is measured by the sensor (44a, 44b) and/or when a predefined dwell time of the fluid in the desorber (12) is measured.

Abstract: This disclosure relates to dialysis systems and methods. In some implementations, a dialysis system includes a dialysis machine with a fluid line and a drain line, a blood line set configured to be connected to the dialysis machine, and a drain apparatus coupled to the dialysis machine. The drain apparatus includes a chamber configured to receive an end of a patient line of the blood line set, an inlet line, an outlet line, and a valve. The inlet line has a first end configured to be coupled to the chamber and a second end configured to be coupled to the fluid line of the dialysis machine. The outlet line has a first end configured to be coupled to the chamber and a second end configured to be coupled to the drain line of the dialysis machine. The valve is configured to control flow of fluid through the outlet line.

Abstract: A potable water filter for an aircraft galley plumbing system is disclosed. In embodiments, the filter includes a body attachable to a mount via a central threaded attachment stud. The stud is surrounded by a filter mount chamber and encloses a central flow channel allowing outflow from the filter body to an outlet port. Potable water enters the mount through an inlet port; an annular “puck” inlet valve extends around the attachment stud, sealing off the filter mount chamber when the filter body is absent and, when the filter body is screwed onto the attachment stud, providing for water flow throughout the filter mount chamber. The filter body houses a solid block of sintered carbon with a hollow core. Water enters the filter chamber via bypass slots in the base of the filter body and flows around and through the carbon filter before flowing down to the outlet port.

Abstract: A device, system, and method for purifying a fluid is provided. The fluid purification device includes a tank, a cover and a release assembly. The tank having a hollow interior. The cover is sealingly coupled to the tank. The release assembly is pivotally coupled to the cover, the release assembly having a relief valve fluidly coupled to the hollow interior, the release assembly being movable between a first position and a second position, the relief valve being movable between an operating position, a released position and a non-operational position.

Abstract: A water filter cartridge is provided for gravity-feed water filtration applications, and includes a granular filter media made from a mixture of titanium dioxide particles interspersed with granular activated charcoal. The granular filter media is placed in a filter housing having an upper inlet opening and a lower outlet opening. A seal may be disposed around an outer periphery of the housing at its upper region, and may include a flange region that flexes upwardly upon insertion of the sidewall into a filter cartridge opening. Optionally, the filter media is arranged in several distinct layers, such as a top media layer that is a mixture of agglomerated nanoparticles of titanium dioxide interspersed with granular activated charcoal, an intermediate media layer in the form of agglomerated nanoparticles of titanium dioxide, and a lower media layer that is another mixture of agglomerated nanoparticles of titanium dioxide interspersed with granular activated charcoal.

Abstract: A water purifier having a small size and compact internal structure and enabling a water discharge part through which water is extracted to be rotated, and a control method of a water purifier.

Abstract: A water purifier includes a filter housing defining an accommodation space therein, a water discharge module including a water purifier body including a housing defining an outer appearance and a filter provided in the housing to filter raw water introduced from the outside and a water discharge nozzle mounted on the water purifier body to supply the water passing through the filter to the outside of the water purifier body, and a tray provided below the water discharge module. The water discharge module includes an elevation unit elevatably mounted on a front surface of the water purifier body so as to be elevated with respect to the water purifier body and a rotator having one side in which the water discharge nozzle is provided, rotatably mounted on the elevation unit, and allowing the water discharge nozzle to vary in position while being rotated with respect to the elevation unit.

Abstract: The present invention relates to a water purifier. In detail, the water purifier includes: a water purifier body including a housing forming an external shape and filters disposed in the housing to filter original water flowing inside from the outside; a dispenser module at least partially protruding forward from the water purifier body and having a dispenser nozzle supplying water passing through the filters to the outside of the water purifier body; and a tray disposed under the dispenser nozzle. The dispenser module is turned to both sides and is moved up/down.

Abstract: A reusable water filter cartridge comprises a housing having a water-permeable base and a body extending from the base. The base and the body define a cavity for receiving filter media. There is a water-permeable lid which is removably securable to the housing via interlocking connectors on the lid and the housing. The lid is securable to the housing by rotating the lid relative to the housing in a first rotational direction to engage the connectors on the lid and the housing with each other. The lid is releasable from the housing by rotating the lid relative to the housing in a second rotational direction which is opposite to the first rotational direction to disengage the connectors on the lid and the housing from each other. Water to be filtered enters the housing via the lid, passes through the filter media contained in the cavity, and exits the housing via the base.

Abstract: A water purifier that includes: a main body including: a filter unit, a cooling unit, and a heating unit; a first water tube through which water purified by the filter unit or water cooled by the cooling unit passes; a second water tube through which water heated by the heating unit passes; a water discharge unit that protrudes from a portion of the main body; and a water discharge cock (i) that downwardly protrudes from the water discharge unit, (ii) that is coupled to the first water tube and the second water tube, and (iii) that is configured to discharge water purified by the filter unit or water cooled by the cooling unit in a first stream and discharge water heated by the heating unit in a second stream, wherein the first stream is separated from the second stream is disclosed.

Abstract: A hydraulic fluid tank arrangement for a working machine is provided, the arrangement including a hydraulic fluid tank; an inlet portion for receiving hydraulic fluid into the hydraulic fluid tank; and an oil filter arranged in fluid communication with the inlet portion; wherein the hydraulic fluid tank arrangement further includes a gas removal device arranged in fluid communication with the oil filter downstream the inlet portion and upstream the oil filter for removing gas from the hydraulic fluid before the hydraulic fluid reaches the oil filter. A method for removing gas from hydraulic fluid contained in a hydraulic fluid tank arrangement is also provided.

Abstract: A method for removing diatomaceous earth and contaminants from a filter, and for filtering liquid using diatomaceous earth is provided. Embodiments of the method can include a washdown process, a backwash process, and a filtering process. Some embodiments can include one or more filter cartridges with cartridge tubes to increase flow during the backwash process. Some embodiments can also include a backwash sprayer to disturb contaminants during the backwash process.

Abstract: A filter device has at least one filter element (17, 19) exchangeably received in a housing (9). The filter element has a filter medium (23) permeable to a flow of the fluid to be purified and has, on at least one end, an end cap (25) that, for the purpose of positioning of the filter element (17, 19) in a functional position, interacts with a fixing body (33) connected to a removable cover (11) of the housing (9). A bypass valve (51) is provided on the fixing body (33). On the fixing body (33), a wall part (57) in the functional position forms a dividing element in the housing separating the housing into a filter element chamber (65) and a bypass chamber (63) situated at the outflow side of the bypass valve (51). The bypass chamber has a protective filter (67) through which the fluid flowing out of the bypass valve (51) can flow.

Abstract: A method for appropriately controlling an aeration volume for activated sludge on which aeration treatment is conducted while DO of an activated sludge mixed liquor in an aeration tank is being adjusted to substantially 0 mg/l (ultralow DO treatment). The method includes the following steps. An aeration volume correlation (G=F(Gr)) between an aeration tank and a measuring device is acquired in advance. A sample of activated sludge mixed liquor taken during ultralow DO treatment operation is temporarily intensely aerated in the measuring device and then aeration is stopped. Based on temporal changes in the measuring device DO value, an oxygen consumption rate Rr and an equilibrium DO value C1 are calculated. An appropriate aeration volume G2* of the testing device is acquired by using an Ea?G relationship formula and the like obtained in advance. An appropriate aeration volume Gr2* of the aeration tank is obtained by using the relationship G=F(Gr).

Abstract: A health meter has a decontamination device for dirty fluid with a metal casing with metal lid, inlet port and outlet port, an open bucket having a docking lid and a plurality of openings, a hollow tube with an opening, a central hollow rod with rod opening connected to an outlet port, a convex reinforcing spacer in the open bucket, a compressible decontamination media and a reinforcing seat in the open bucket. Dirty fluid flows into the metal casing between the open bucket and metal casing through openings in the docking lid into the compressible decontamination media sequentially into the hollow tube and then into the central hollow rod and out the outlet port while an outlet sensor and an inlet sensor communicate with a controller in communication with a network and a plurality of client devices for automatic remote monitoring.

Abstract: An apparatus and method for replenishing urease in a sorbent cartridge for use in sorbent dialysis. The sorbent cartridge is configured to allow an amount of urease to be added to the sorbent cartridge. A urease solution can be injected into the sorbent cartridge to replenish the urease containing module, or solid urease can be added to the sorbent cartridge. The sorbent module can also comprise other, rechargeable, sorbent materials for removing toxins other than urea from spent dialysate.

Abstract: A health meter has a decontamination device for dirty fluid with a metal casing with metal lid, inlet port and outlet port, an open bucket having a docking lid and a plurality of openings, a hollow tube with an opening, a central hollow rod with rod opening connected to an outlet port, a convex reinforcing spacer in the open bucket, a compressible decontamination media and a reinforcing seat in the open bucket. Dirty fluid flows into the metal casing between the open bucket and metal casing through openings in the docking lid into the compressible decontamination media sequentially into the hollow tube and then into the central hollow rod and out the outlet port while an outlet sensor and an inlet sensor communicate with a controller in communication with a network and a plurality of client devices for automatic remote monitoring.

Abstract: A portable drinking water filter system, such as a pitcher, having a sleeve and a floatable body including a filter opening configured to receive a water filter, the floatable body having a seal extending outward from an outer surface of the floatable body. The floatable body is disposed in a sleeve cavity such that a body seal engages the sidewall and restricts water from passing between the floatable body and the sidewall. The seal is configured to create friction with the sidewall, wherein the friction created when the floatable body rises in the sleeve is different than when the floatable body lowers in the sleeve. The friction created when the floatable body rises in the sleeve is greater than when the floatable body lowers in the sleeve, allowing the floatable body to auto-retract toward a cavity base without burping.

Abstract: A desalination apparatus and a method of desalinating thereof, wherein the desalination apparatus comprises a perforated vessel and at least one engineered semi-permeable membrane that covers perforations on the perforated vessel, wherein the desalination apparatus forms a purified water from saline water when submerged in the saline water to a depth of 50-250 m to create sufficient pressure differential on both sides of the engineered semi-permeable membrane, wherein low-saline water flows through the engineered semi-permeable membrane and collected within an internal cavity of the desalination apparatus. Various embodiments of the desalination apparatus and the method of desalinating are also provided.

Abstract: An energy-saving filtering system and a hollow fiber membrane module for the same are disclosed. According to the filtering system of the present invention, pretreated feed water flows into the case of the hollow fiber membrane module by gravity, and the filtrate passing through the hollow fiber membrane is discharged from the hollow fiber membrane module by gravity.

Abstract: A filter for gravity-fed applications, having filter media with a hollow center, the filter being generally prone to a degradation or cessation in fluid flow due to air entrapment or air lock within the filter housing cavity, which develops during filtering. A diffuser element is introduced to pierce the entrapped air bubble, the diffuser element being an elongated structure connected to the filter housing top end cap and extending through the entrapped air bubble to the filter media.

Abstract: An aircraft potable water supply system allows unused water to be recovered for later use. The system prevents cross contamination of potable water, waste water and foul water, drains down the entire system upon aircraft shutdown and refills the system in preparation for a resumption of service.

Abstract: A fluid filtering apparatus and method may include keyed components to ensure that a correct filter element is being installed into a filter base, and to automatically actuate a fluid valve as the filter element is rotated into place on the base. Tool-less replacement of the element is provided. An embodiment of the element may include inner and outer substantially tubular-shaped media packs disposed about an axis, with one end of each of the inner and outer media packs being attached to an end cap of the element in a manner defining a fluid flow space between the inner and outer media packs for receiving a flow of fluid directed in parallel through the inner and outer media packs. A housing of the filter apparatus may include a flow tube configured to fit into the space between the inner and outer media packs.

Abstract: The present invention provides an aeration lateral system designed to be site specific for new septic disposal areas or retro fitting to existing septic disposal areas to break up the biological clogging sludge mat at the interface of the wastewater and imported sand or native soil fill under or adjacent to disposal areas of a typical septic system. The lateral system provides uniform or other site specific distribution of fluids about the bio-mat of a wastewater disposal area, with lateral spacing and hole spacing varying based on the type of disposal area being utilized. The lateral system can also be utilized to provide continuous low volume air supply system to a wastewater disposal area or peat filter module. The air lateral installation includes methods to minimize airflow disturbance of the soil and methods to prevent air leakage.

Abstract: The present invention refers to a triphasic separator for the separation of oil-water-gas mixtures used in the field of oil extraction from land or sea wells, suitable in particular, but not exclusively, for installation on the seabed in subsea wells.

Abstract: The invention relates to an apparatus and a method for purifying liquid. The apparatus comprises an air-tight container (301) and a heater (305). The air-tight container is configured to store the liquid, wherein at least a portion of the container consists of a filter membrane (303). The heater is configured to heat the liquid such that the liquid is driven out of the container through the filter membrane. The heater can actively increase the pressure in the container by heating the liquid and/or gas in the container. Sometimes, a portion of the liquid stored in the air-tight container may be vaporized, which increases the pressure in the container as well. Under the increased pressure, the liquid can be easily driven out of the container while being purified via the filter membrane. Since the filtration is actively driven by heating, the filtration efficiency of the apparatus can be controlled and improved according to various applications.

Abstract: A liquid supply system includes a container containing a liquid, a tank coupled to the container to receive the liquid from the container, and a dispensing mechanism coupled to the tank to receive the liquid to be dispensed. The dispensing mechanism comprises a filter configured to filter the liquid before dispensing. The filter comprises a first gas collection space configured to collect gas accompanying the liquid. The tank is controllably coupled to the first gas collection space of the filter to vent the collected gas from the filter to the tank.

Abstract: A skimmer device for removal of debris and other contaminants from the surface of a body of liquid; said device including a central debris and contaminant collection element supported by outrigger buoyancy elements; said buoyancy elements ballasted by controlled charging of each of said elements with a volume of ballast liquid, and wherein an adjustment of buoyancy is provided by varying a volume of residual air retained in said buoyancy elements.

Abstract: The arrangement for connection of a medical device, particularly a dialysis device, to a permeate line for the supply of permeate into the device is characterized by an adapter comprising a first supply line section with a terminal coupling member for connection to the water line, a pressure sensor and two successively arranged shut-off valves, and two second supply line sections that branch off from the first supply line member by means of a branching member. Both second supply line sections are connected to two different lines of the device in such a manner that disinfection fluid flows through both second supply line sections in a disinfection process of the device.

Abstract: Provided are a process and device for reducing radioactive material of an object containing the radioactive material to a safe level in a living environment. Included are a step of performing at least a step of carrying out a heating process on the object, into which radioactive material is absorbed and/or adsorbed from an environment or which absorbs and/or adsorbs radioactive material from an environment, in a state where temperature is less than or equal to the critical temperature of water and pressure is greater than or equal to the saturated vapor pressure of water, or a step of abruptly releasing the pressure; and a step of separating, after the above step, into liquid and solid.

Abstract: Disclosed is a system to separate, enrich, and/or purify a cellular population from a biological tissue, such as a tissue sample. For example, an adipose tissue sample can be acquired and disrupted. The disrupted tissue sample can then be separated and purified. The separated components can include multipotent, pluripotent, or other cell populations.

Abstract: A flow loop for hemodialysis, hemodiafiltration and hemofiltration for the treatment of pathological conditions such as End Stage Renal Disease (ESRD) that has a controlled compliant flow path for preparing fluids required for a hemodialysis therapy session from water. The controlled compliant flow path modifies water into any one of a solution for priming a hemodialysis system, a physiologically compatible solution for contacting blood, a physiologically compatible solution for infusion to a subject, and a solution for blood rinse back to a subject. The controlled compliant flow path has a means for selectively metering in and metering out fluid from the flow path.

Abstract: Apparatus and method are disclosed for integrated waste foam/gas evacuation from an electrocoagulation unit. The electrocoagulation unit has a primary electrocoagulation reaction chamber with processing electrodes maintained therein. A flotation chamber is integrated above the reaction chamber and a vacuum hood is affixed over the flotation chamber. A vacuum nozzle device is connectable with a vacuum source and received through the hood and in the flotation chamber, a height adjustable foam intake provided at one end of the nozzle.

Abstract: A bottle comprises a cap, a reservoir having an open top closeable by the cap, and a filter holder that houses a filter, the filter holder being coupled to the cap such that a liquid in the reservoir is filtered by the filter as the liquid is being consumed, and the filter is fluidly decoupled from the reservoir when the cap is disengaged from the reservoir. Preferred filters can be constructed out of high reactivity carbon mixture, activated carbon, iodinated resin, combinations thereof, or any other suitable compositions for filtering water or other liquids, and can be molded into any suitable size and shape. Preferred filter holder can have a top portion and a bottom portion that couple together via a snap fitting, mating threads, or any suitable means, which allow access to the filter, and which have numerous vents that allow liquid to freely flow through the filter.

Abstract: An Archimedes screw plant for separating slurry includes a tubular sifting device; a slurry feeding device; a device for evacuating the liquid fraction; and a device for evacuating the substantially dry separated solid. The device includes an upper compaction chamber of the separated solid where a solid plug of product is formed. In addition, the tubular sifting device has an upper opening being provided with an auxiliary contrast element for forming said solid plug of product.

Abstract: A system comprises an input, a brine chamber, a water softening chamber, and an output. One or more valves are configured to selectively prevent fluid communication of water from the input into the brine chamber; and to selectively permit communication of brine from the brine chamber to the water softening chamber when water is not being communicated through the input. The output is configured to output water softened in the water softening chamber. The one or more valves may include a first valve and a second valve. The first valve may be responsive to water being communicated through the input. The second valve may be responsive to either manual actuation or a fluid level in the brine chamber. The system may further include a cartridge that is removably coupled with the water softening chamber. The cartridge may contain salt and may further define the brine chamber.

Abstract: An upflow reactor is provided that includes a reactor tank, conduits, a waste water distributor, at least one first flotation separator and an optional second flotation separator for separating reactor water, biomass, and biogas, a collection device, and a gas separator for separating biomass and biogas. The first flotation separator includes one or more gas domes that are connected to the collection device and have outlets, the cross-sectional area or geometry of which can be controlled using movable covers.

Abstract: A vent assembly is described for use in an extracorporeal fluid unit. A vent structure adjacent to a micro-porous membrane forms the assembly. The vent structure is porous and changes color when the vent structure becomes wet, thereby providing a visual indication that the vent structure has been exposed to liquid.

Abstract: A filtration system includes a filter assembly removably coupled with a manifold. The coupling of the filter assembly coupled with the manifold aligns an intake port of the filter assembly with an inlet tube of the manifold and communicates a flow tube of the filter assembly with an exit tube of the manifold. The filter assembly pushes a shut-off valve of the manifold from its normally closed position to its open position. Liquid then flows into the filter assembly from the inlet tube of the manifold and filtered liquid flows into exit tube of the manifold from the flow tube of the filter assembly. The filter assembly further pushes a pressure relief valve of the manifold from its normally open position to its closed position.

Abstract: A filtration container assembly generally includes an outer container having a first end and a second end and defining an inner cavity, and a plunging assembly configured to be received within the outer container inner cavity, wherein the plunging assembly includes an inner sleeve having a first end and a second end and an outer wall defining an inner bore, wherein the outer wall is continuous from the first end to the second end, and a filtration assembly coupled to the inner sleeve at the second end.

Abstract: A filtration container assembly generally includes an outer container having a first end and a second end and defining an inner cavity, and a plunging assembly configured to be received within the outer container inner cavity, wherein the plunging assembly includes an inner sleeve having a first end and a second end and an outer wall defining an inner bore, wherein the outer wall is continuous from the first end to the second end, and a filtration assembly coupled to the inner sleeve at the second end.

Abstract: Wastewater system design, installation, maintenance and use are described and provided. In embodiments, design, installation, and maintenance of pressure gradients in a septic system serve to transport treatment tank gases, or other gases, downstream, towards or into a leach field, bio-filter, drain field, or other environment. Such transport may promote the displacement of gases or the remediation of gases.

Abstract: An ozone generator generates ozone gas; a gas-liquid mixer mixes the ozone gas and a liquid; a liquid storage tank separates an introduced gas-liquid mixture into gas and a liquid; a circulation path circulates gas among the ozone generator, the gas-liquid mixer and the liquid storage tank; and an opening and closing control means controls a flow of gas flowing out through a gas outlet port of the liquid storage tank in accordance with a stored liquid amount in the liquid storage tank. As a result, the stored liquid amount of the liquid stored in the liquid storage tank can be adjusted.

Abstract: A fuel filter system, especially for Diesel engines includes filter housing (1) having a fuel inlet (27) and a fuel outlet (29) and a dehydrating filter medium (23) between the inlet and the outlet for the fuel to pass through. The filter housing (1) has a collection chamber (35) for the water trapped by the filter medium from which collection chamber the water can be supplied to a water absorbing and evaporating device (49) via a controlled dispenser (45). The components of the evaporating steam are releasable into the environment through the evaporating steam outlet (51). The water absorbing and evaporating device (49) has a valve arrangement (59, 61) by which the evaporating water outlet (51) can be closed depending on an inadmissible amount of non-evaporated water (55) collected in the evaporating device (49).