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7473356 |
Wastewater treatment system by superconducting magnetic separation
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...
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7470372 |
Fluid treatment device
A device for the treatment of an influent with a porous media. The influent passes radially through the porous media and into an internal volume of the device. The treated influent then passes...
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7413649 |
Treatment apparatus with modular chemical containing units having one-way valve assemblies
A fluid treatment system that includes at least one treatment module (“pod”) with rigid and impermeable inner and outer surfaces, and an annular center passage which is designed to provide an...
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7344640 |
Urban runoff water treatment methods and systems
The apparatus and methods of the present invention enable efficient and appropriate treatment of Urban Water Runoff, so that the treated Urban water Runoff can be can be introduced into public...
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7341662 |
Distribution and collection headers for a filter bed
A filtration vessel has an inlet for inflow into the filtration vessel of liquid media to be filtered, a body of filter media in the filtration vessel, and a drain to receive filtered liquid media...
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7294258 |
Device for chemically/physically treating drinking water
The invention relates to a device for physically treating drinking water, in particular, for reducing the formation of limestone. The invention device comprises at least one water inlet ( 3 b ) and...
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7252761 |
Filtration installation for filtering the water of a water pool
A filtration installation for a swimming pool ( 2 ) comprising a filter vessel ( 4 ) containing a filter bed ( 5 ), an inlet pipe ( 6 ) extending between the pool and the filter vessel, a return...
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7192521 |
Filter having a media retaining plate
A filtration system that includes a plurality of underdrain blocks arranged to define a plurality of laterals. Each underdrain block defines an interior and an exterior and has an orifice that...
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7163621 |
Fluidizable device
A device for the treatment of an influent with a nonbonded media, and when the media becomes spent, the media is fluidized with a backwash fluid. Concentric inner and outer perforated cylinders...
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7157001 |
Carbon filtration process and apparatus for removing PCB's and other compounds from wastewater
Process and apparatus for treating wastewater from a sewer system including the steps of: (A) removing solids contained in the influent to create solids-depleted preliminary effluent (PrE) and to...
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7147782 |
Method and apparatus for metal removal by ion exchange
The present invention provides a method for selectively removing metal ions of interest from a solution ( 12 ), such as the wastewater from a chemical mechanical polishing process. The method...
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7138056 |
Filter underdrain system for backwash flow and method for measuring same
A filter underdrain system and a method for measuring the water flow through the underdrain filter system. The apparatus includes panel members assembled to form a perforate grid on the filter base...
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7090771 |
Filtration system underdrain
The invention is directed to a filter underdrain for supporting a filter media between at least two dividers forming at least one cell, which includes at least one porous plate for supporting the...
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7063787 |
Filter media retaining cap and hold down grid
The invention recites a filtration tank including a chamber for holding liquid to be filtered, the filtration tank includes a fluid inlet for providing liquid to the chamber. The filtration tank...
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7048857 |
Method and apparatus for metal removal ion exchange
The present invention provides a method for selectively removing metal ions of interest from a solution ( 12 ), such as the wastewater from a chemical mechanical polishing process. The method...
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7045067 |
Method and apparatus for increasing filter contaminant loading capacity
The filter contaminant loading capacity of a depth granular media filter is increased by imposing a so-called “back-slip” on the filter bed. At intervals between normal backwashing, a volume of...
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7029578 |
Water treatment system
A system suitable for the elimination of Cryptosporidium oocysts from water includes a filter bed comprising four layers of inert particulate material such that, from the top layer (first layer)...
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6972091 |
Ion exchange resin plant
An ion exchange resin plant for the demineralizing or softening water with an arrangement that allows the plant to operate continuously. The plant tank is divided into to two separate compartments...
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6966987 |
Tangentially fed media filter method and apparatus
A water treatment device for purifying process water by filtration comprising a housing containing a filter media, having a bottom gravel bed and an upper silica bed, and a fluidizer for...
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6942795 |
Modular filter system and method of repairing and/or replacing components thereof
A modular filter system and a method of repairing and/or replacing one or more components thereof. The modular filter system includes a traveling backwash hood assembly and a plurality of filter...
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6936176 |
Transportable water treatment system
A transportable water treatment system comprising: an inlet adapted to receive water having a pressure of between 10 to 60 psig, a primary regenerable filter connected so as to receive water that...
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6921481 |
Automatic backwash filter system
The invention is directed to an automatic backwash filter system that includes at least one influent port for introducing a fluid to the filter; a plurality of partitions forming a plurality of...
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6843920 |
Ion exchange system using U-tube principle
This invention is a liquid separation system using ion exchange resin, adsorbent resin and catalytic resin based on U-tube principle. It is shown that relatively low fluid velocity is sufficient to...
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6841069 |
High rate filter and high rate filtration method using the filter
The present invention relates to the raw water-filtering technical field, and is to provide a high speed filtering apparatus which can filter a great amount of raw water containing suspended...
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6830684 |
Integrated liquid and gas distribution device for underdrain block laterals
The invention recites a filter comprising a block including an outer wall defining an inner chamber and a block exterior, and a conduit having a conduit wall, a first conduit end, a second conduit...
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6821435 |
Water purifying system
The invention relates to a system for water purification comprising at least two units, of which the first unit comprises at least one filter unit ( 1 ) which consists of a container ( 2 )...
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6821445 |
Rainwater-treating apparatus in combined sewer system and backwashing method therefor
The present invention is aimed at treating rainwater in a combined sewer system, while enabling removal of a majority of pollution substances even if a large amount of entering rainwater. The...
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6797166 |
Underdrain apparatus
A filter underdrain apparatus and a method for manufacturing such apparatus. The apparatus includes a cover member, a water orifice member and a bottom member, each being individual pieces. The...
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6740237 |
Low profile extruded underdrain
An improved underdrain block for an underdrain system supporting a filter media bed in a liquid filtration system is provided. The underdrain blocks are preferably made of an extrudable polymeric...
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6733670 |
Apparatus and method for rehabilitating a traveling bridge filter underdrain
A porous media support plate module may be used to construct a new filter underdrain or to rehabilitate an existing filter underdrain. A porous plate replacement module may be inserted between two...
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6616852 |
Modular filter system
A modular filter system having a mechanism for performing a filter to waste step on the last cell of a multi-cell system following backwashing. A method of operating a modular filter system in...
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6605211 |
One-piece underdrain for swimming pool filters
The present invention relates to pool filters. An underdrain design is disclosed that primarily relies on a peripheral ring rather than lateral projections to transfer the water to the sand. The...
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6596160 |
Periodic ozone treatment system for a showering tower type water cooling system
A periodic ozone treatment system for a showering tower type water cooling system worked once daily for a period of 10˜30 minutes essentially comprises: an ozone dissolving tank to prepare high...
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6582595 |
Compact water conditioning apparatus
The present invention relates generally to a water conditioning apparatus that is compact and easily recharged without removal from the installation location. In one embodiment, the present...
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6488842 |
Filtering device
A filtering device includes a container having an inlet for introducing liquid to be treated, an annular multi-layered prepacked screen assembly provided in the container and having an outlet for...
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6471857 |
Filter apparatus with sand filter bed
A filter apparatus removes foreign substances contained in raw water by passing the raw water through a filter layer ( 8 ) made up of a particulate filter medium disposed in a filter tank ( 1 )....
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6461501 |
Ornamental pond skimmer and filter apparatus
There is provided herein a new skimmer apparatus and a new filter mechanism for use in ornamental ponds and the like. According to a first preferred embodiment there is provided a skimmer apparatus...
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6428690 |
Filter module with improved backwash capability
A filtering system with an improved backwashing capability includes influent and effluent means, and uses plastic beads as the filtering medium. The system further includes a plurality of backwash...
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6423216 |
Biological oxidation filter system
A biological oxidation filter system can be used as a pretreatment process in water treatment, or for processing sewage or wastewater by reproducing the purification mechanisms in nature...
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6419823 |
Apparatus and method for sanitizing and cleaning a filter system
An apparatus and methods for sanitizing and cleaning filtration systems is provided. The apparatus includes a chamber fluidly connected to a source of fluid for backwashing the system, and a heat...
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6413423 |
Liquid treatment apparatus with backwash flow control valve
Apparatus for treating water utilizes a single flow control valve that has only one moving part to divert treated water from several water treatment units to backwash another water treatment unit.
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6387283 |
Descending bed, continuously regenerating type filter with an adjustable length wash chamber
An apparatus for continuously filtering a suspension includes a filter-medium washer provided with length-adjustable walls.
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6383376 |
Method and apparatus for filtering a liquid
A filter comprises a main tank and at least two separate beds of particulate filter media contained in respective conical recipients integrated within the main tank so as to minimize the overall...
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6358407 |
High turbidity wastewater purification system
A device and method for the filtration and purification of suspended solids from high turbidity wastewater or other fluids using a slow circulating fluid stream flow inside a vessel of fluid...
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6325931 |
Filtration system having a low profile extruded underdrain
An improved underdrain block for an underdrain system supporting a filter media bed in a liquid filtration system is provided. The underdrain blocks are preferably made of an extrudable polymeric...
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6322704 |
Radial-flow fluidizable filter
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6322705 |
Method and a device for the purification of fluids
A water-based heating or cooling plant incorporating a filtration device and a pipeline network for bleeding water from the heating or cooling plant to the filtration device, the filtration network...
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6319400 |
Deep bed filtration system
A deep bed filter principally used for filtration of contaminated aqueous fluid comprises a layer of polymeric cylindrical particles in combination with a layer of anthracite particles and a layer...
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6312592 |
Clarifier for liquids laden with suspended matter
Clarifier for liquids laden with suspended matter, comprising: an outer, first, cylindrical tank (4), a central, second, cylindrical tank (1) for collecting the filtered liquid, roughly...
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6312611 |
Apparatus for distributing gas and liquid during concurrent gas/liquid backwash in filter underdrain flumes
A concurrent backwash distribution apparatus for a filter having a filter tank and a plurality of underdrain laterals includes a baffle positioned in a common main conduit to define an auxiliary...
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