Abstract: The invention describes a filter container, system and method for filtering sewage effluent from a septic tank. The filter container includes a body having a lower end and an upper end, having walls forming a floor positioned at the lower end and sides connected to the floor and positioned to define an inner cavity extending from the lower end to the upper end. The body of the container has a mouth opening positioned at the upper end to provide access to the inner cavity. A lid is positioned on the upper end of the body so as to cover the mouth cavity to thereby close the container. A plurality of pipes connect the container in fluid communication with the septic tank or with another container, the plurality of pipes including at least one inlet pipe for delivering sewage effluent to the inner cavity and at least one outlet pipe for discharging filtered sewage effluent from the inner cavity.

Abstract: At a distal end of a slide bar 4 which is axially slidably inserted in a through hole 1a of a housing 1 is formed a cylindrical filter chamber 7. The filter chamber 7 has a communicating hole 6 communicating with an inlet 3 provided in the housing 1 and a concave 5 formed at an outer peripheral face thereof except an area adjacent to the communicating hole 6 and communicating with an inlet 2 provided in the housing 1. The concave 5 is provided with a plurality of fitting holes 11 extending from the outer peripheral face toward an axis core of the filter chamber and spaced in circumferential and axial directions with respect to one another. Into each of the fitting holes 11 is inserted a screen cartridge 8 which consists of a breaker plate of a perforated plate in a form of a bottomed conical tube and a net member in a form of a bottomed conical tube.

Abstract: Filter elements for draining wastewater into the soil in leach fields comprise net sacks filled with scrap rubber or plastic chips and supplied with fabric filter cloth. Leach fields are constructed by excavating trenches, placing a first row of filter elements at the bottom of the trenches, installing a drain pipe on top of the row of filter elements, placing a second row of filter elements on top of the first row and the drain pipe, overlapping the pieces of filter cloth to provide a barrier to the surrounding soil, and backfilling the trench with soil.

Abstract: A filter box of the type used for separating solid materials from liquid having an outer shell constructed of a liquid impervious material and an inner shell having perforated sides and flooring and being disposed within said outer shell and spaced therefrom so as to define a material collection area between the two shells. Upon loading liquid-laden material into the filter box through the open upper end thereof, liquid and smaller particles pass through the perforated sides and flooring of the inner shell into the collection area leaving the larger solids within the inner shell for removal. One end of the filter box defines a hinge-mounted door for providing access to the interior of the filter box for removal of the larger solids as well as access to one end of the material collection area.

Abstract: A filter assembly including an integral filter cartridge and storage pouch is disclosed herein. The storage pouch is configured to hermetically surround the filter cartridge upon removal of the cartridge from an opening of a liquid drainage conduit of the assembly. The drainage conduit can include a shutter for closing the opening of the drainage conduit upon removal of the filter cartridge.

Abstract: A cartridge based water purification and filtration system which permits cartridge changes without drainage at the input and output ports. Interlocking flanges at the manifold and cartridge lock the cartridge to the manifold and raised surfaces at the cartridge operate the inlet valve with a rotational seating of the cartridge. A spring biased inlet valve depends from a supply manifold input port and cooperates with the filter cartridge to prevent forward flow until the cartridge is seated to the manifold. The check valve includes a split stem which prevents chatter with valve operation. A check valve at the output port cooperates with a sealed bayonet fitting that mates to a concentric outlet port at the cartridge to prevent back flow with cartridge removal.

Abstract: A drainwater treatment system positionable within a horizontal flow passage of a drainage system utilizes a partition which divides the flow passage into an upstream chamber and a downstream chamber. In addition, a mid-panel is supported within the upstream chamber for dividing the interior of the upstream chamber into an upper section and a lower section so that the drainwater enters the upper section before entering the lower section through a first opening provided in the mid-panel. A conduit is also joined between a second opening provided in the mid-panel and the opening of the partition for conducting drainwater from the lower section of the upstream chamber to the downstream chamber so that the drainwater which enters the upper section and then into the lower section is decelerated to flow conditions at which debris and suspended are permitted to separate and settle from the drainwater before being conducted from the lower section and into the downstream chamber through the conduit.

Abstract: A fusion-welded thermoplastic assembly and a method of fabricating the same includes first and second thermoplastic members fusion-welded together using a third thermoplastic fusion element. The first and second thermoplastic members and the thermoplastic fusion element are heated to a molten state using an infrared heater, and the molten fusion element is fused to each of the first and second thermoplastic elements. Prior to being connected by the fusion element, the first and second thermoplastic members are either brought into contact with one another or is held in such a way that they can be connected to each other using the third thermoplastic fusion element.

Abstract: An antimicrobial microfiltration filter is made from a bundle of polymeric semipermeable hollow fibers treated with an antimicrobial agent and a microporous filter medium which may also be treated with an antimicrobial agent.

Abstract: The invention relates to a filter element for a fluid filter incorporating a web of pleated filtering material that is formed into a circumferentially closed cylindrical filter body, which is coaxially supported by a perforate rigid tube and the axial ends of which are sealingly inserted into corresponding annular receiving cavities provided in a rigid bottom end cap at one end and in a rigid annular end cap at the opposite end of the filter body. The cylindrical filter body has its terminal edges embedded in separate sealing rings of a flexible type of rubber or similar elastomeric material and the filter body is sealingly clamped with the sealing rings, and together with the supporting tube, removably between the rigid bottom end cap and annular end cap, respectively.

Abstract: A structure and method is provided for absorbing excess fat from an environment including one or more fats insolubly combined in an aqueous solution mix. The structure includes a plurality of layers, at least one of which is formed from a preferentially fat-permeable, oleophilic material having a greater affinity for fat than for the aqueous solution. Preferably, the structure includes particular structural and topographic components that effectively enhance the inherent fat-affinity of the oleophilic material. The absorption structure is easily employed by introducing it into an environment such as a soup, broth, etc., having fat residing in an aqueous solution. The structure acts to attract and absorb at least a portion of the fat which can then be extracted from the solution. A process for forming the multi-layer absorption structure is also provided.

Abstract: A sludge filtration system generally including a container, a first filter assembly defining a first filtrate cavity, a first device for evacuating sludge filtrate from the first filtrate cavity, and a device for selectively slidably removing the first filter assembly from the container. The container can be either an open-top box or a vacuum box and is constructed to receive sludge therein. In the preferred embodiment, the system further includes a second filter assembly defining a second filtrate cavity, with the second filter assembly attached to the first filter assembly and preferably extending from the first filter assembly in a direction distal to the bottom of the container. Also preferably, the system includes a device for stabilizing the filter assemblies when they are slidably removed from the container.

Abstract: A combination filter element comprising a bundle of hollow microporous fibers housed within an extruded carbon block, wherein the carbon block is fabricated to balance particle retention capacity against absorption capacity to provide a composite filter with desirable pressure drop, filter life, and particulate and chemical contamination reduction, and a filtration device, in which combination filter element may be employed, having a base portion including a sump which has an inlet and an outlet and a base which has a reception port for receiving the filter element.

Abstract: A fuel filter comprises a head (96) having an inlet (100) and an outlet (102). The head is connected to an element (266) by a nipple portion (186) which has a valve element (196) therein. An actuating projection (222, 272) is engageable with said valve element to open flow through said nipple portion when the correct element is attached hereto. The actuating projection is further supported on a central portion (220, 276) which prevents connection to a nipple portion that extends too far into the element. According to a further embodiment, the filter includes a housing (412) with a removable element (424) mounted therein. The housing has an inlet port (414) in direct fluid communication with a chamber (418). The outlet port (416) is in direct fluid communication with a central standpipe (422). The standpipe has a flow element (442) movable therein for controlling the condition of flow openings (436) in the standpipe.

Abstract: A wastewater skimmings dewatering unit that includes a drip bucket having a bucket compartment having an open top defined by a threaded lip and a bottom through which a number of drain opening are provided; a locking ring with the center opening and an internally threaded inner edge that is companionately threaded to engage the threaded lip of the drip bucket; a dewatering sack constructed from nylon mesh screening having a top edge that is sized to fit over the threaded lip of the drip bucket such that a sack bottom is suspended above the bottom and held in place by screwing the locking ring onto the threaded lip of the drip bucket.

Abstract: A water- and oil-porous sack contains a hydrophobic, compliant, oil-absorbent, copolymer material arranged in a number of bodies that (a) are generally cylindrical, (b) are porous, (c) have at least one passageway parallel to the axis of the cylinder, and (d) are dimensioned to float on water with the axis parallel to the surface of the water. The material is formed with a binder in a novel extrusion process. The inventive sack is sewn to create a number of pockets, and the seams create fold lines that permit the sack to dip below the water to allow debris to pass. The inventive sacks can be suspended below a storm drain and used in conjunction with known catchbasin inserts.

Abstract: A drain filtering system is disclosed, comprising a filter placed within a basket which is suspended from frame positioned underneath a drain grate atop the inlet to a storm drain. The filter is constructed from materials which filter out heavy metals and hydrocarbons from the water passing through. The filter also has overflow outlets to prevent back-up of storm water during periods of heavy rain. The basket is constructed from a corrosion resistant material, preferably high density polyethylene which can withstand the extreme pressures exerted by waste and water collected within the filter.

Abstract: A storm-drain insert has separate collection systems for trash and oil or other hydrocarbons. A tilted grate separates trash from oily inlet water and directs the trash to a separate basket, and the water flows through a corrugated, flexible canister containing a hydrophobic, compliant, oil-absorbent, copolymer material arranged in a number of bodies having high surface area. Preferably, the material is formed with a binder in a novel extrusion process. The inserts can be suspended in a storm drain adjacent to a curb inlet.

Abstract: A filter arrangement with a cellular structure in which a plurality of filter chambers extend in the direction of the medium to be filtered. There is a filter cloth or fabric attached to each of the two sides of a cell frame which closes the filter chambers on both sides. The filter chambers are each provided with a filling of predominantly active charcoal granules. To achieve a simple and advantageous structure of the filter arrangement, the cellular structure is in the form of a rectangular cell frame each with rectangular filter chambers, preferably made of synthetic resin. Appropriate, right-angled partition walls inside the cell frame and the installation of reinforcement members can result in filter chambers of optimum size.

Abstract: In a method and an apparatus for dewatering and containing radioactive, aqueous waste (44), the latter is introduced into a filtration container (12) and is ultimately disposed of in a disposable container structure (12, 48, 50), which comprises the filtration container (12) holding the dewatered waste (44), as well as an outer container (50) enclosing the filtration container (12). The filtration container is an inner sack (12) having a bottom (13) which is provided with a straining cloth and through which essentially all the dewatering is carried out. After the dewatering operation has been completed, the inner sack (12) is sealed and placed in the outer container (50) in order to be ultimately disposed of. For purposes of cleaning, the filtration water (17) may be recirculated through the waste during the dewatering operation.

Abstract: A cartridge based water purification and filtration system which permits cartridge changes without drainage at the input and output ports. Interlocking flanges at the manifold and cartridge lock the cartridge to the manifold and raised surfaces at the cartridge operate the inlet valve with a rotational seating of the cartridge. A spring biased inlet valve depends from a supply manifold input port and cooperates with the filter cartridge to prevent forward flow until the cartridge is seated to the manifold. The check valve includes a split stem which prevents chatter with valve operation. A check valve at the output port cooperates with a sealed bayonet fitting that mates to a concentric outlet port at the cartridge to prevent back flow with cartridge removal.

Abstract: The present invention relates to a mineral filtering apparatus in which the raw water is passed through a plurality of filtering processes, such as automatically filtrating without pressure, multiply filtering, ions exchange, sterilization, deodorizing, and releasing mineral substance. The filtering apparatus generally comprises a cover, an inlet water box, a first filtering unit, a filtering box, a second filtering unit, a storing reservoir, a mineral substance barrel that is disposed within the reservoir, an outlet filtering core that is disposed within the reservoir, a spout, a bottom bracket, and a water pan. The storing reservoir is provided with a mineral stone barrel with which the water soluble mineral substance is released. When the raw water flows from top to bottom, it can be treated with filtrating, deodorizing, ions exchange, sterilizing, magnetizing processes such that the treated water is clean and suitable for direct drinking.

Abstract: A filter for removing particulate matter from water flowing into an inlet, such as a catch basin is disclosed. The filter may comprise an envelope of filter material adapted to receive an inlet cover device, such as a catch basin grate. The inlet device may be inserted within the envelope and placed in an opening of the inlet. Water, for example, may then be double filtered before entering the inlet. A roll filter comprising porous material is also disclosed that may be used in combination or alone when filtering runoff entering a curb drain or other inlet.

Abstract: An oil absorption filter for extracting free oil from the used wash water of a laundry has platforms which extend in parallel and laterally across a tank, but do not reach across the total length of the tank so as to provide an avenue of fluid flow between the platforms.. Multiple entrances are provided into the tank to resulting in a slow flow of used wash water into the tank so as to encourage free oil to separate from the used wash water. Hydrophobic socks are vertically arranged in rows and placed through holes in the platforms. A partitioned pumping chamber is provided with an entrance proximate to the bottom of the tank which is the only avenue of entry for oil-filtered water to access the pumping chamber. A sump pump connected electrically connected to a level float pumps the oil filtered water out of the pumping chamber and out of the oil filter.

Abstract: A portable liquid-solid separator tank having a bed with a drain, surrounding sides and a dividing wall. A grate overlays the interior of the vessel, bed, and sides, and forms the dividing wall. A filter overlays the grate, extending up the sides and covering the top and the dividing wall. The separator, which may be vacuum loadable, is filled with a sludge which is then separated from the liquid it contains by gravity and hydrostatic pressure which force the liquid through the filter. Liquid is drained out of the bottom of the vessel and the solids are transported within the vessel. The solids are removed through a gate that may be provided in the tank, or by using a hydraulic lift system in much the same manner as a garbage truck empties a municipal dumpster. The filter is removed with the solids and usually discarded.

Abstract: A reusable fluid absorbing device for separating water from oil includes a water-permeable liner bag disposed within a rigid housing container. The rigid housing container includes at least one throughhole that fluidly couples the interior of the housing container to the exterior of the housing container. A removable end cap provides access to the housing compartment interior, allowing for removal and replacement of the liner bag. The liner bag is sealed shut and made from water-permeable material. A water-absorbing mixture of material is disposed within the water-permeable liner bag.

Abstract: A cover for a sewage shaft comprising a shaft lid (1) including apertures (2) for the passage of sewage, a filtering element (3) spanning the region of the apertures (2) being arranged at the lower side of this lid, wherein the filtering element (3) projects into the apertures (2) and, at its upper side, ends substantially flush with the upper side of the shaft lid (1).

Abstract: A porous fluorocarbon membrane has a porous support completely impregnated with tetrafluoroethylene/vinylidene fluoride copolymer. There is a process for producing this membrane by impregnating a porous support with a copolymer solution in a readily-boiling solvent and a precipitating mixture of alcohol and water followed by curing for partial hardening of the solution and subsequent drying at elevated temperature. A cartridge filter includes protective and supporting cylindrical perforated hollow housings, containing a fluorocarbon membrane or two superimposed flourocarbon membranes. Membranes and a cartridge filter find extensive use in separation of gases and aggressive media.

Abstract: A portable berm for use in and out of doors. The berm includes a impervious flexible synthetic floor which has a berm wall formed about its periphery. The berm wall comprises a plurality of elongated plastic strips which are attached to the floor along their inner and outer edges each forming a cavity which extend around the floor. A plurality of openings are formed in the strips adjacent at least their edges. An adsorbent and absorbent hydrophobic material which allows water to pass through but absorbs chemical contaminants is positioned within the cavities to extend about the floor.

Abstract: A filter/drier for receiving and discharging a flow of refrigerant having a header with an inlet passage forming a plenum and an outlet passage through the header. A louvered baffle plate has peripheral tabs crimped over an annular flange on the header to form a subassembly. A cup-shaped shell containing desiccant, with a layer of fibrous filter material over the desiccant, is assembled over the header subassembly and sealed to the header by weldment. The peripheral spaces between the crimped baffle tabs provide exclusive flow dispersion to an annular collector space in the header which communicates with the outlet passage.

Abstract: An in-tank fuel filter includes a body having upper and lower panels comprising an outer shell or layer of extruded mesh, layers of spun bonded and melt blown filtration media and a fitting for mounting the filter to an in-tank fuel pump inlet. The outer layer of the body is extruded mesh material that has the general appearance of a woven fabric but includes connections at every filament intersection. This outer layer protects the finer, inner filtration layers which include a first layer of spun bonded material, a layer of melt blown filtration media defining smaller pore sizes and a second layer of spun bonded material. The mounting fitting is made of a fuel compatible material and may either be a multiple part device or be in-situ molded on one of the filter panels. Separating ribs or a stuffer may be disposed in the interior of the filter to prevent its collapse and improve fuel withdrawal through the mounting fitting.

Abstract: An antimicrobial filter cartridge having a perforated core member wrapped with a first microporous membrane, which is in turn overwrapped with second and third microporous membranes. The membranes are covered with a criss-cross wrapping of antimicrobial treated yarn. The filter cartridge is sized so as to fit tightly into a cartridge housing of a fluid filtration system. Fluid passing through the cartridge housing will be filtered by the filter cartridge to remove microorganisms from the water and which prevents the growth of bacterial and other microorganisms on the filter media.

Abstract: A storm drain filter (10) functioning to remove selected substances from water flowing through a municipal storm drain. The storm drain filter (10) has an absorption filter (18) functioning to absorb selectable substances from a liquid. The absorption filter (18) comprises an absorption filter frame (18A) enclosing an absorption filter absorbing material (18B) between pairs of at least two absorption filter longitudinal retainers (18C) and at least two absorption filter transverse retainers (18D). The at least two absorption filter longitudinal retainers (18C) and at least two absorption filter transverse retainers (18D) function to retain the absorption filter absorbing material (18B) within the absorption filter frame (18A). A tray (16) functions to support the absorption filter (18). The tray rear (16B) comprises at least one orifice (16BA) functioning to permit liquid to flow therethrough.

Abstract: A blood purification membrane having a membrane thickness of 10 to 35 .mu.m, an inner diameter of 100 to 300 .mu.m, a porosity of 50 to 85%, a water permeability (ultrafiltration rate) at 37.degree. C. of not less than 20 ml/m.sup.2 .multidot.Hr.multidot.mmHg and a sieving coefficient of albumin of not more than 0.01, a substantially homogeneous interior structure, and a smooth surface structure. A process for producing the membrane and a module are also provided.

Abstract: A method for using a heretofore industrial waste material for the utilitarian purpose of controlling and containing a liquid on a hard surface. The method includes the steps of accumulating an industrial waste material in the form of paper dust in a bindery for use as a loose filler for a container, forming a container from a fabric having a porosity sufficient for passage of the liquid therethrough, substantially entirely filling the container with the paper dust as accumulated at the bindery, and thereafter closing the container after it has been substantially filled with the accumulated paper dust from the bindery. Additionally, the method includes placing the container on the surface after closing in order to control and contain the liquid on the hard surface thereby.

Abstract: A composite structure comprises a porous filter medium, a substrate provided with at least one drainage pathway, and a support and drainage medium sandwiched between the porous filter medium and the substrate. The porous filter medium, the support and drainage medium, and the substrate are bonded free of any adhesive.

Abstract: A neutral dischargeable effluent is developed by reaction between an acidic, spent photographic fixer liquid and an alkaline, spent photographic developer liquid; the spent fixer liquid contains iron in solution, the iron being introduced in a de-silvering pretreatment of the spent fixer liquid. The two liquids are fed into a treatment chamber and are allowed to react in the treatment chamber to form a neutral liquid and precipitated iron-containing solids; the solids settle in the treatment chamber and the neutral liquid rises upwardly through a synthetic organic polymer fiber filter pad into a discharge chamber above the filter pad; fine sticky particles suspended in the rising neutral liquid are retained by the filter pad; a neutral effluent is discharged from the discharge chamber.

Abstract: A waste water filtering apparatus includes a vertically extending filter housing having a plurality of filter tubes disposed therein. At least one of the filter tubes has an opening in the bottom end thereof and is closed at the top wherein waste water to be filtered flows in through the interior of the filter tube and out through openings in the walls of the filter tube into the interior of the filter housing. A second filter tube is provided with a closed bottom end and an open outlet end in flow communication with a discharge outlet from the filter housing. The second filter tube is in spaced parallel relation with the first filter tube whereby water flowing in the interior of the housing flows into the second filter tube and flows upwardly and out of openings in the top end of the filter tube which is in flow communication with the outlet discharge of the filter.

Abstract: A filter (32) is provided for a medical sterilization container (10) having a port (18,22,24) allowing fluid communication between the interior of container (10) and the surrounding environment. A peripheral frame (44) is adapted to cooperate with the port (18,22,24). A plurality of cross-members (54) span an aperture (48) formed by a frame (44). A filter medium (58) is disposed across the aperture (48) so as to be interposed between the interior of the container and the cross-members (54).

Abstract: A removable filter assembly includes a relatively thin support grate positioned on top of an inlet grate, a filter fabricated from a geotextile material is positioned on the support grate and has an appropriate filter size for removing suspended particulate materials from ground water before the ground water passes into the catch basin, and a covering grate positioned above the filter for protecting the filter from contact damage caused by passing vehicular traffic. The cover includes depending sides for positioning the covering grate and blocking flow. In one embodiment, the support grate has a plurality of spaced apart pads around the exterior thereof, and the filter is placed on the support grate and over the pads. The pads extend into holes in the covering grate to trap the filter therebetween. The covering grate also has a depending peripheral flange that depends downwardly to circumscribe the support grate and an upper portion of the inlet grate.

Abstract: A filter for removing particulate matter from water flowing into an inlet, such as a catch basin is disclosed. The filter may comprise an envelope of filter material adapted to receive an inlet cover device, such as a catch basin gate. The inlet device may be inserted within the envelope and placed in an opening of the inlet. Water, for example, may then be double filtered before entering the inlet. A roll filter comprising porous material is also disclosed that may be used in combination or alone when filtering runoff entering a curb drain or other inlet.

Abstract: A liquid filter, such as an oil or gas filter, is provided which has a cup-shaped cylindrical filter housing to be mounted in a vertical orientation, with a releasable cover closing the filter housing. A liquid inlet passage and a liquid outlet passage are provided at the housing. A replaceable, substantially hollow cylindrical filter insert is vertically arranged in the housing. The filter insert being formed of a filter material member arranged between an upper and a lower disc. A collar, which is impervious to solid contaminants removed by the filter material member, extends from the lower disc upwardly along a part of the height of the filter insert, surrounding an outer circumference of the filter insert member. In this manner a collection chamber is formed for the filtered solid particles at the lower disc.

Abstract: A portable vacuum loadable liquid-solid separator tank having a bed with a drain, surrounding sides and a dividing wall. A grate overlays the interior of the vessel, bed, and sides, and forms the dividing wall. A filter overlays the grate, extending up the sides and covering the top and the dividing wall. The separator is filled with a sludge which is then separated from the liquid it contains by gravity and hydrostatic pressure which force the liquid through the filter. Liquid is drained out of the bottom of the vessel and the solids are transported within the vessel. The solids are removed through a gate that may be provided in the tank, or by using a hydraulic lift system in much the same manner as a garbage truck empties a municipal dumpster. The filter is removed with the solids and usually discarded.

Abstract: A drinking straw that purifies water by forced movement of water through the straw. The straw is composed of: 1) a filter plug made of a fibrous structure, the filter plug having sides, a first end, a second end, and a firmness sufficient to avoid collapse of the fibrous structure under a specified pressure drop; 2) a water purification material integrated in the fibrous structure; and 3) a liquid impervious wrapper covering the sides of the filter plug, the wrapper defining openings at the first and second ends of the filter plug.

Abstract: A multiwell filtration device having at least two liquid receiving reservoirs is disclosed in which at least one of the side walls includes one or more openings for passing liquid therethrough. A filtration membrane is sealingly adhered to the side wall covering the openings of each reservoir. The reservoirs are adapted to be positioned within the wells of a multiwell plate, which receives the filtrate passing from the reservoir through the membranes. The desired orientation of the reservoirs in the multiwell plate is retained before, during or after filtration to promote efficient automated sample handling techniques.

Abstract: A bag type device (2) for extracting water from oil includes a bag (3) with an outer layer of felt (20) lined by at least one layer (22) of water absorbing laminate. The interior of the bag is composed of a plurality of slit sheets of water absorbing laminate forming a plurality of finger-like strips (35) depending from adjacent the top of the bag. The strips are preferably longer than the length of the bag. The bag and the water-absorbing layers within the bag are supported by a wire ring (30) stitched into a hem around the open upper end of the bag. As oil is passed through the bag, the finger-like strips provide an increased surface area for absorption of water from the oil. The strips can expand inwardly and toward the oil flow to prevent back-pressure build up within the bag.

Abstract: A filter jug to contain water or other liquid, the jug comprising a first compartment to receive liquid and a second compartment to hold filter liquid to be poured from an outlet of the second compartment and a filter chamber through which liquid must pass from the first compartment to the second compartment.

Abstract: The invention relates to a filter cartridge for a filter for filtering liquid or gaseous media comprising two front disks and a substantially hollow cylindrical filter member arranged inbetween the two front disks, with the medium to be filtered flowing through the filter member, with at least one of the front disks provided with a central aperture whereby the filter cartridge is axially mountable onto a medium inlet pipe or outlet pipe with at least one seal sealingly positioned inbetween, and wherein the filter cartridge is detachable from the pipe for replacement. The filter cartridge is designed as a replacement filter cartridge for replacing common filter cartridges having metal parts, wherein the filter consists of paper and/or cotton and/or felt and/or thermally usable plastic non-woven fabric, wherein the front disks and formed of thermally consumable plastic and the seal is formed of a flexible thermally consumable material.

Abstract: A filter for removing particulate matter from water flowing into an inlet, such as a catch basin is disclosed. The filter may comprise an envelope of filter material adapted to receive an inlet cover device, such as a catch basin grate. The inlet device may be inserted within the envelope and placed in an opening of the inlet. Water, for example, may then be double filtered before entering the inlet. A roll filter comprising porous material is also disclosed that may be used in combination or alone when filtering runoff entering a curb drain or other inlet.

Abstract: A unit for the dehydration of sludges, particularly for purification plants including a support structure (10) supporting a vibration causing device (24), at least a collection reservoir (11) of sludges positioned above the support structure (10) and having at least one discharge outlet (12) on the bottom, at least a bag-shaped filtering container (14) having an opening engageable to the discharge outlet (12) feeding means (25) to feed the sludges into the collection reservoir (11), collecting means (23) to collect the filtered liquids from the filtering container (14), and at least a control unit (34) to control at least the feeding means (25).