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7635435 |
Method and apparatus for oil water separation
A method and apparatus for separating immiscible liquids in a dispersion containing an aqueous liquid and at least one dispersed non-aqueous liquid by passing the dispersion through a series of...
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7608183 |
Control valve assembly
A control valve assembly ( 10 ) controls the flow of water to and from a treatment tank ( 16 ) and the regeneration of the treatment material therein. A housing of the valve assembly includes...
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7556730 |
Reclaimed water reuse device
Taught herein is a reclaimed water reuse device, comprising a biological reaction tank, a membrane module, a water pool, an inlet-drainage device, an outlet device, a water-generating device, a...
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7530463 |
Backwashable filtering device
A backwashable filtering device for thermoplastic plastics material is disclosed. The device can filter thermoplastic plastics material through one or more nests of screens in the filtering...
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7481930 |
Filter having a filter layer that forms a protective barrier to prevent clogging of a gravel-less underdrain and method of making the same
A filter having a gravel-less underdrain and a filter layer installed directly on top of the gravel-less underdrain. The filter layer is designed such that when fluid is directed through the filter...
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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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7399419 |
Modular filtration system
A filter system includes a set of modules, each module including screen assemblies and filter media sandwiched between the screen assemblies. A plurality of control assemblies are associated with...
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7381323 |
Filtration apparatus
A filtration apparatus is provided which is easy to maintain, manage and which enables preservation of filtration characteristics due to the fact that filtration is carried out by use of a...
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7370445 |
Sludge removal
A sludge removal apparatus includes a sludge removal head ( 10 ) with a sludge suction duct and an water supply duct with open end portions alongside each other, and a filter ( 32 ) adjacent to the...
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7320760 |
Cleaning efficiency testing method and apparatus for a filter in a filtering system
A method and an apparatus are provided for testing the efficiency of a cleaning procedure for a filter in a filtering system. After the cleaning procedure of the filter, the filter pores contain a...
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7288186 |
Filtrate immersed activation assembly for disk filters
A self cleaning filtration device wherein an activation piston, laterally supported within an activation cylinder is immersed in filtrate within the confines of an immersion chamber. The immersion...
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7276171 |
Method for cleaning separation membrane
When an out-of-basin type separation membrane, which is connected to a biological treatment tank through a circulation passageway for filtering tank water, is cleaned, a part or all of the backwash...
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7270745 |
Liquid filtration apparatus embodying super-buoyant filtration particles
Presented is a liquid filtering apparatus and method that overcomes the disadvantages encountered with prior bed filtration systems by providing a filtering apparatus that incorporates a...
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7258784 |
Solid liquid filtration apparatus and method
A method and system for separating a particulate contaminate from a contaminated liquid medium involves filtering the contaminated liquid medium with a filter element having an afflux surface made...
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7204930 |
Water purification system and method
An oxidation filtration system for cleaning groundwater, the system having an aeration tower and a filtration tank. Within the filtration tank is an upper chamber and a lower chamber. Contained...
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7198713 |
Installation for the removal and the deactivation of organisms in the ballast water
Installation for the removal and the deactivation of organisms in the ballast water, with the following characteristic features:
a first feed pump for conveying the ballast water, an...
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7192528 |
Self-cleaning filter apparatus
A self-cleaning filter system is disclosed that includes an inlet fitting that is adapted to be inserted into an existing filter body. A spray tube having a plurality of outlets that slideably...
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7166230 |
Apparatus and method for separating and filtering particles and organisms from flowing liquids
A device ( 1 ) for separating and filtering particles and organisms from a high volume flowing liquid operating under low pressure. The device ( 1 ) includes a conical or cylindrical shape inlet...
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7156983 |
Swimming pool backwash assembly
A swimming pool backwash control arrangement includes a timing device incorporated with a valve for controlling normal re-circulating flow and backwash flow through a swimming pool filter. The...
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7122116 |
Water treatment system
A water treatment system that includes a water storage tank fluidly connected to a water source through an inlet, a chlorination device fluidly connected to the water storage tank and the inlet, a...
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7055699 |
Self-cleaning mechanical filter
A self-cleaning mechanical filter comprises a mechanism for simultaneously cleaning the internal surface and the external surface of a filter element. The filter is provided with structure for...
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7052599 |
Method and apparatus for reuse of abrasive fluid used in the manufacture of semiconductors
An apparatus and method recycles the abrasive fluid or slurry effluent used in the polishing step in the manufacture of semiconductors. Agglomerations of abrasive grains built up in the slurry...
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7001505 |
Slurry monitoring system
A slurry monitoring system is provided. A filter encompasses a filter chamber containing a purge piston. During a monitor operation, the purge piston is retracted, and slurry enters the filter...
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6998046 |
Filter system and methods of operating the same
A filter system employing a modular filter and at least one high rate pre-treatment system for expeditiously and effectively filtering water. The modular filter includes a reservoir housing for...
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6959818 |
Filter and filter cleaning apparatus and related methods
Apparatus and methods include an improved filter ( 203 ) and cleaning process.
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6958118 |
Self-cleaning water filtration system and method
A self-cleaning water filtration system includes a pre-filter to filter oils and relatively medium sized particles in a water flow, a multi-stage filter to purify and provide a second level of...
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6951614 |
Method and device for filtering liquids, especially drinks
A method for filtering liquids, especially drinks, is by a filtering device having at least two filter lines. Each filter line has at least one filter unit with at least one preliminary filter and...
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6887372 |
Portable drilling water filter with self-cleaning system
A drilling water filter ( 1 ) with a self-cleaning system including a filter container ( 2 ), a cover ( 3 ) and a filter element ( 6 ) that can be inserted in the flow arm between an inlet ( 4 )...
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6878293 |
Automatic valve assembly for water circulation systems
A filtration and backwash system for a water source such as a swimming pool is provided including a fluid source, a pump, a filter and a specially designed five-port valve which is easily adaptable...
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6878294 |
Running method and treatment system for spiral wound membrane element and spiral wound membrane module
A spiral wound membrane element allowing back wash reverse filtration at 0.05 MPa to 0.3 MPa is employed for a spiral wound membrane module. Air injection of injecting air of not more than 0.3 MPa...
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6796776 |
Pumping system and method with improved screen
A system and method for reducing the collection of debris in a fluid pumping system. The system and method may be used in pools, spas, or other applications in which fluids are circulated through a...
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6783667 |
Screen unit for viscous mass
A screen unit for removing solid particles from a viscous mass, for example molten plastic. The screen unit includes a housing provided with a supply channel and a discharge channel for the viscous...
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6752920 |
Integral valved filter
A self cleaning filter includes a body ( 15 ), inlet ( 1 ), outlet ( 14 ), flush inlet ( 12 ) and waste outlet ( 2 ). Elements ( 7 ) provide filtration while compressed but are cleaned...
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6730219 |
Filter for liquid products
The filter has a framework with an inlet end, a solids outlet end and an outlet for a separated product between the ends. A fabric filter extends in the framework from end to end and is supported...
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6709575 |
Extended life combination filter
A filtering system ( 10 ) is provided for filtering working fluid from a machine ( 12 ) and includes a cleanable filter ( 16 ) and a centrifuge ( 82 ) where filter capacity is too low for a...
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6662636 |
Method of reducing fouling in filters for industrial water system analytical devices
The invention is in a method of analyzing the water of an industrial water system wherein an analytical device is used to measure some parameter capable of being measured in the water of said...
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6638422 |
Liquid filtration apparatus and method embodying filtration particles having specific gravity less than liquid being filtered
A liquid filtering apparatus which incorporates a filter bed medium having a specific gravity lower than that of the process liquid being filtered. Process liquid is pumped through one or more...
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6607660 |
Liquid filtration device with backwashing feature
A liquid filtration device having a backwashing feature in which liquid flow through the device is reversed with a plate being rotated under the filtration cartridges to allow reverse liquid flow...
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6596158 |
Waste water filtration tank
A waste water filtration tank receives waste water under hydrostatic pressure. The tank collects solids using a filter screen. When the screen becomes clogged with collected solids, liquid is...
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6585886 |
Aerobic microbiological wastewater treatment reactor
A wastewater treatment reactor includes an upper chamber 4 biomass therein and a lower chamber including a combination filtering/aerating unit 6 having a gas inlet 9 and a discharge outlet ...
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6579447 |
Self-cleaning pre-filter system
A self-cleaning prefilter system generally includes a system inlet 11, a sediment filter 13 having a selectively openable drain port 18, a chemical injector 21, a pressure accumulator 28 ...
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6562246 |
Pressurized backflush system
A filter backflushing system including an accumulator containing a pressurized bladder which propels a supply of backwash fluid contained within the accumulator in a reverse direction through a...
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6524471 |
Backwash control system for a filter unit used in a machine tool system
A filter unit in a fluid circuit associated with a machine tool that uses machining fluid is maintained by counting the number of times the machine tool is operated and automatically servicing the...
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6497814 |
Apparatus for cleaning a swimming pool water filter
A water pump normally used in a system circulating pool water through a filter cartridge 26 is used to clean the filter cartridge by coupling a 3-way or inline valve 32 and a tee 36 in the...
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6485649 |
Method and device for the production of pure water
Input water is preheated in a heat exchanger ( 2 ), pumped ( 4 ) through another heat exchanger ( 5 ) into a heating unit ( 6 ). The heating unit heats the water to a temperature of above 100° C.,...
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6423212 |
Microbial resistant water purification and collection system
A microbial resistant water purification and collection system includes a reverse osmosis filter assembly 19 having a filter inlet in selective fluid communication with a system inlet and a...
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6402962 |
Self-cleaning filter with bypass
A self-cleaning filter with a bypass port is provided for a washing machine that recirculates water back to the wash tub. The filter includes a housing with a filter element disposed therein. The...
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6402954 |
Method and apparatus for monitoring and cleaning a fluid filter system
A method and apparatus for optimizing the filtration of process fluid. The system provides establishing a peak flow rate of permeate through a filter and then engaging a filtering cycle in which...
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6378706 |
In-situ modular cleanable filter
A filter housing ( 14 ) has a first inlet ( 16 ) for receiving a first fluid such as oil from a machine such as an internal combustion engine ( 12 ), a first outlet ( 20 ) returning the first fluid...
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6283305 |
Filter apparatus with backwashing mechanism
For uniformly, satisfactorily, and automatically removing foreign matter that has accumulated on the filter, the apparatus includes a housing having an inflow portion and an outflow portion, a...
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