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WO/1998/001205A1 |
A backwash sealing shoe is provided for a filtration system including a tank having an undivided filtration bed and a plurality of side-by-side headers within the bed, each header in communication with a respective port in a wall of the ...
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WO/1998/000219A1 |
An apparatus (10) for extracting an analyte from a liquid sample, comprises a microcolumn (12) having a microparticulate media therein, the media being sandwiched between two compression layers (18a, 18b). Preferably, the compression lay...
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WO/1997/046493A1 |
A method and a plant for purification and other treatment of circulating water in water-based heating/cooling plants, district heating plants etc. The water is lead into the upper area of a tank (10) containing a "stack of layers" compri...
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WO/1997/044111A1 |
A radial-flow filter (120) employing nonbonded granular particles (56) for filtering impurities from an influent, and that can be backwashed by fluidizing the granular particles (56) to free the impurities therefrom. During a backwashing...
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WO/1997/040907A1 |
A system for supporting fluid-treatment media above a lower surface that reduces media clogging and head loss in granular fluid-treatment media systems by providing a layered porous plate. The porous plate can have multiple layers of fin...
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WO/1997/028881A1 |
A pelletized composition and method of using this composition for removing pollutants from storm water runoff. A bed of the pellets (10) has a useful initial permeability to storm water runoff, and retains a significant proportion of thi...
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WO/1997/028877A1 |
The present invention provides a water purification cartridge (218) with unidirectional fluid flow through the filter media (274). Preferably, the fluid flow is down through the media to prevent fluidization of the media which can have a...
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WO/1997/022398A1 |
A method and an apparatus for filtering liquid or pasty substances and/or separating components of the substances and/or particles present therein. The apparatus comprises a vessel (11) containing the substance (12) to be processed. The ...
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WO/1997/018881A1 |
The invention concerns a reversible flow filter basin (1) containing drainage pipes (2) which lie in a substantially parallel arrangement on the bottom (10) of the filter basin. The drainage pipes are interconnected at least in pairs by ...
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WO/1997/000715A1 |
A separation device provided with an inlet (4, 14) for a fluid to be filtered or separated, an outlet (5, 15) for the resulting filtered fluid, and a filter material (3, 11) arranged in the fluid path between the inlet and the outlet. Th...
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WO/1997/000770A1 |
A process for preparing a composite particulate material includes the steps of providing a particulate primary material (16) having a primary softening temperature; providing a particulate support material (18) having a support softening...
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WO/1997/000110A1 |
Lateral member assembly (10) for use in an underdrain lateral distribution system is made of plastics but is as capable as much heavier and more costly metallic assemblies in supporting a bed of filter media which must be periodically ba...
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WO/1996/038239A1 |
Effluent is pumped into a first multistage, modular, vertical filter that extends from ground level to depth near or at the water table. A fluid accumulator (24), located at the bottom of the filter, accumulates water from the filter sta...
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WO/1996/038214A1 |
A device for filtering a liquid substance comprises a container (1) having an inlet (2) for the substance. In the container there is arranged a rotor (6) having an inner rotor part (7) and at least one disc-like outer filter element (8) ...
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WO/1996/038387A1 |
The invention relates to a method for biological cleaning of water, wherein the water is guided through a filter which comprises mineral wool as filter material, wherein the water has preferably been in contact with plants and/or organis...
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WO/1996/031440A1 |
The invention relates to a replaceable filter cartridge for a use in water filtration device. The cartridge has a substantially frustoconical vessel member defining a vertical axis with the vessel member having a screen-like end wall por...
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WO/1996/028234A1 |
A filtration media retention or separation grid (40) is disclosed which provides slots (42) formed in a plate (44) of material, the slots (42) being formed with an angled opening such that fluid passing through the slots (42), either dur...
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WO/1996/028233A1 |
The invention concerns a method of separating solids from liquids for use with liquids containing solid components (for example, for filtering effluent) and/or for separating emulsions such as oil-water emulsions. It is proposed that a f...
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WO/1996/028252A1 |
A movable separator includes a resilient container (2, 30) containing particles (3, 38) such as ball bearings. The separator is provided in a column (1, 27, 28) between two beds of particulate material (4, 5, 9, 10, 13, 14, 19, 20) for e...
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WO/1996/023571A1 |
A filter means comprising a water line and a filter member (5) which is fitted into a housing (3 or 1) and which alone or together with the housing (3 or 1) forms an elongated space which is open at its one end and closed at its other en...
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WO/1996/022945A1 |
An improved electro-coalescent/magnetic separation (ECMS) system for removing contaminants from water, including desalinization, comprises a device (12) for exposing a stream of water to be treated to an electric field, followed by intro...
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WO/1996/020034A1 |
The invention concerns a device for purifying liquids, in particular polluted water for fighting fires. The device comprises a reservoir divided into a plurality of sections by means of an intermediate base plate (9), a first partition (...
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WO/1996/018447A1 |
An improved vertical filtration unit (40) includes a bell-shaped lower end (62) for the air-lift tube (36), an injection ring (38) for introducing air into the air-lift tube at a considerable volume, and a washbox (84) with a more effici...
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WO/1996/016226A1 |
The present invention relates to an apparatus and a process for screening a fibre suspension such as papermaking stock in a pressurized screen especially in connection with pumping said liquid. The invention also relates to the use of th...
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WO/1996/011045A2 |
A fluidized bed filter is described and claimed. The filter is exemplified for use in an aquaculture system under hydraulic pressure. A preferred embodiment of the filter of the subject invention comprises a closed cylinder (12) having a...
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WO/1996/010453A2 |
A filter (10) is provided comprising a first filter layer (12) made of TiO2 or Ti4O7 particles deposited on a second filter layer (14) by stainless steel particles. The first layer (12) has a smaller pore size than the second layer (14)....
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WO/1996/007483A1 |
A gas entrainment/flotation reactor has a supply pipe (1) that opens into a preliminary chamber (3). A riser pipe (7) is joined to the preliminary chamber (3) and surmounted by a foam skimming pipe (9). A foam collecting device (10) is j...
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WO/1996/006668A1 |
A water filter cartridge including an outer shell, an inlet opening proximate a first end, an outlet opening and a cam extending axially from the first end. Cam is constructed and arranged so as to reset a mechanical flow totalization me...
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WO/1996/004974A1 |
A method for filtering edible oils utilizing a backwashable filter assembly (10). A filter system having at least two filter assemblies (A, B) may be utilized to remove bleaching clay and/or nickel catalyst from oil being processed for h...
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WO/1996/000121A1 |
A filtration apparatus with a filtrate recovery device aims at shortening a period of time required for recovery of a stock solution in a tank, readily peeling sludge such as a filtration assistant or the like from filtration elements an...
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WO/1995/032045A1 |
An oil filter (10) utilizes a thermoplastic material (22) having oil oxidation and acidification arresting additives mounted in a casing (11) between particulate filtering material (19) and a felt pad (21). The thermoplastic material is ...
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WO/1995/031407A1 |
An apparatus for treating water includes a vertically extending contact vessel (60), wherein water is contacted with ozone (53), and a return vessel (61) which contains a column (24) of water of a sufficient height to drive water through...
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WO/1995/029004A1 |
An automatically-regulated, self-flushing method of filtering a liquid suspension includes passing the suspension through a granular filter material. The flow of suspension is halted to relieve the pressure in the system, so facilitating...
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WO/1995/027549A1 |
An apparatus (10) and method for gas backwashing a granular media (14) supported upon a lateral underdrain (12) is disclosed. The lateral underdrain (12) includes a plurality of dispersion apertures (40) therethrough and at least one liq...
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WO/1995/026799A1 |
Air grid systems for distributing a gas within treatment systems such as underdrain filters (50) and contact clarifiers is disclosed. The air grid is supported from above so that it can be lowered into position and thus modified or repai...
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WO/1995/024256A1 |
A water treatment device including an arrangement having mechanisms for mechanically totaling the volume of water filtered and for indicating when the replaceable filter cartridge has reached the end of its useful life. End-of-life indic...
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WO/1995/019937A1 |
A water purification plant comprises a treatment container (1), at atmospheric pressure and a first pump (7) for supplying raw water to the container. The pump is regulated by the water level in the container. Further the plant comprises...
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WO/1995/019213A1 |
A process and apparatus in which effluent is continuously fed via an inlet (3) to the bottom of a vessel (1) and flows in a generally upward direction through a fixed volume of closely packed plastic beads (2) of a submerged density some...
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WO/1995/018663A1 |
An improved strainer device has a screen (24) which receives a solid/mixture from a feed container (16) for separation. To insure that an uneven flow of the mixture over the screen (24) does not occur due to, for example, a non-level mou...
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WO/1995/017939A2 |
The invention concerns a filter for liquids, in particular for swimming-bath or similar water, the filter consisting of a closed tank with a water inlet and a water outlet between which the tank contains a bed of filter material of the r...
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WO/1995/017940A1 |
The invention concerns a filter for liquids, in particular for swimming-bath or similar water, the filter consisting of a closed tank with a water inlet and a water outlet between which at least one filter element or at least one bed of ...
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WO/1995/013123A1 |
A system for distributing both gas and liquid in separate conduits within an underdrain filtration system is disclosed. A tubular liquid conducting conduit (100) also contains a separate air conduit (130). Extending from each conduit are...
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WO/1995/013124A1 |
The invention relates to method and apparatus for reducing reject water flow from filter with moving bed and washing of the sand in sand washer. Wash water flow and pump water flow are kept separate and thereby either of these flows, or ...
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WO/1995/011070A1 |
A deep bed filter system comprising a plurality of filter media beds (101, 102), each having a respective media regeneration sub-system that includes some components associated with an individual filter bed and other components that are ...
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WO/1995/009268A1 |
In a method for the conversion of a fibre suspension, and particularly for increasing the output of a dewatering apparatus especially for recycled fibre pulp, the reject from the dewatering apparatus is treated in a fractionator, where f...
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WO/1995/009038A1 |
The present invention relates to a method and filter device based on adapting the filtration to take place on essentially vertical filter surfaces. The filter elements are advantageously made of mineral fiber. The footprint of a filter p...
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WO/1995/007744A1 |
A method and a treating system for processing a mixture of a liquid is disclosed wherein a multiple filtration is executed at one or more screening means having different filter mediums such as plates, meshes, micro-meshes, sand and/or a...
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WO/1995/006160A1 |
An apparatus for fractionating suspensions includes a tubular strainer (1) turnable about a horizontal axis, and spray means (5, 7) arranged to spray the suspension against the strainer. The strainer has at least two strainer sections (2...
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WO/1995/004585A1 |
The vacuum filtration device has a disposable filter funnel and a disposable filtrate receptacle. The funnel and receptacle are used with a reusable base that is connected to a vacuum source. When the receptacle and funnel are mounted on...
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WO/1995/003110A1 |
A device and method for making a filtering device for a refrigerant circuit including a hollow body (2) with a bottom (4) and an opposite opening (5) sealed with a sealing member (6, 36), said sealing member comprising a fluid outlet (8,...
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