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| Number | Title | Issue Date |
| 8012359 | Filtration apparatus A radial or crossflow media filter comprising a housing such as a vessel or tank (1), the housing containing filter media (9), a contaminated flow inlet (2) and a discharge outlet (8), the inlet comprising a manifold (5) situated w... | 09/06/2011 |
| 7785479 | Apparatus and method of separating The present invention advances tank-based aquaculture by providing a low cost, high efficiency solid waste separator. The invention combines the simplicity of centrifugal-gravitational separation with the practicality of automatic separator cleaning. Low-pressure ai... | 08/31/2010 |
| 7381336 | Automated water treatment system and method of use An automated method for controlling a solids inventory in a continuous backwashing upflow sand filter system treating a liquid inflow having impurities therein, includes the steps of: monitoring an influent inflow pressure and controlling the air pressure in an air ... | 06/03/2008 |
| 7364707 | Packing element comprising at least one recessed portion of specific volume and method of using thereof A packing element for use in a fluidised bed includes a continuous surface with at least one recessed portion. The recessed portion has a volume in the range of 0.2 to 30% of the volume of the packing element itself. ... | 04/29/2008 |
| 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 pipe (8) extending between the filter vessel... | 08/07/2007 |
| 7201848 | Methods and apparatus for separation of particles The present invention is directed to a method and system that separates first particles from second particles, or white blood cells from red blood cells, by sedimentation in a fluid chamber with debulking of one of the first or second particles or red blood cells th... | 04/10/2007 |
| 7168274 | Combination washer/dryer having common heat source The combination washer/dryer and method for operating a combination washer/dryer. The washer/dryer has a containment drum which receives wash water, and includes a perforated clothes drum which rotates within the containment drum. A heat plenum is provided in heat t... | 01/30/2007 |
| 7147755 | Ultrasonic transducer system The method is for treating a liquid or slurry with an ultrasonic energy. A movable endless member is provided that is permeable to a liquid. A transverse foil is disposed below the member and extends across the member and a transducer is in operative engagement with... | 12/12/2006 |
| 7001506 | Self-cleaning circulatin system and method The present invention provides a system and method for providing a self-cleaning water circulation system which may be utilized for a fish pond, fountain, or the like. Means for automatically cleaning the pump intake to avoid pump failure due to leaves and debris is... | 02/21/2006 |
| 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 containing fluid. A plurality of filter cells are disposed in the reserv... | 02/14/2006 |
| 6945287 | Columnar seal for particle processing system A backflow blocker prevents backflow of gas to a lower pressure first stage of a system for processing particles from a downstream higher pressure second stage of the system. The blocker comprises an upright duct connecting the first stage to the second stage. The d... | 09/20/2005 |
| 6808624 | Replaceable media filtration An improved method for using replaceable filtration media in a rotatable drum. A plurality of media cartridges are installed on the rotatable drum. As the drum rotates, the media cartridges are alternately submerged and lifted from the water. The constant cycle of f... | 10/26/2004 |
| 6797158 | Method and apparatus for acoustically driven media filtration A method and apparatus for acoustically enhanced particle separation uses a chamber through which flows a fluid containing particles to be separated. A porous medium is disposed within the chamber. A transducer mounted on one wall of the chamber is powered to impose... | 09/28/2004 |
| 6790351 | Vertical filter A liquid filtering apparatus is placed in a vessel having a bed of filtration material and an intake for introducing unfiltered liquid, that includes a washbox, an airlifting tube extending from the washbox and including an intake end and means for introducing a pri... | 09/14/2004 |
| 6641737 | Vertical filter A liquid filtering apparatus is placed in a vessel having a bed of filtration material and an intake for introducing unfiltered liquid, that includes a washbox, an airlifting tube extending from the washbox and including an intake end and means for introd... | 11/04/2003 |
| 6517712 | Descending bed filter An improved vertical filtration unit which includes an airlift and a washbox designed for more efficient washing of dirt particles from the filtration material. The washbox consists of a filter media shield, and a washbox skirt for washing of the filtrati... | 02/11/2003 |
| 6517724 | Air charged backwashing bioclarifier The present invention provides a floating media biofilter having an economical structure which allows energy efficient and water conserving backwashing of the floating media. The biofilter includes a filter chamber fluidly connected to a charge chamber wh... | 02/11/2003 |
| 6426005 | Sequential descending bed filters with reject/washwater containing impurities being fed to a separate unit for elimination of impurities A treatment system for treating water/wastewater includes two continuously operating granular media filters that are operated together in series. The water/wastewater to be treated is introduced as an influent into the first of the granular media filters ... | 07/30/2002 |
| 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.... | 05/14/2002 |
| 6361701 | Method and device for continuous filtration of liquids The invention relates to a method and device for the continuous filtration of liquids containing solid matter, in particular for cleaning wastewater, by means of a filter bed consisting of a particulate filtering medium, which is continuously moved throug... | 03/26/2002 |
| 6319413 | Method of filtering liquid using a vertical filter Method of filtering liquid using a vertical filter, which includes media, an airlift, a washbox, a reject box, a filtrate chamber, and an effluent box. The method of filtration and media cleaning is automatic. The filtered liquid is collected by multi-car... | 11/20/2001 |
| 6221258 | Method and apparatus for acoustically driven media filtration A method and apparatus for acoustically enhanced particle separation uses a chamber through which flows a fluid containing particles to be separated. A porous medium is disposed within the chamber. A transducer mounted on one wall of the chamber is powere... | 04/24/2001 |
| 6153113 | Method for using ligands in particle separation A system and method are disclosed for separating particles having different sedimentation velocities. The system includes a container containing a binding substance including first particles and ligands attached to the first particles. When the binding su... | 11/28/2000 |
| 6143187 | Fluidized bed filter for an aquarium Improved fluidized bed filters are described and claimed. The filters are exemplified for use in aquarium systems. A preferred embodiment of the filter of the subject invention comprises a cylinder having an inlet port. Water is pumped into the inlet port... | 11/07/2000 |
| 6143186 | Device for continuous filtration of liquids A continuous filter device for liquids has a filter chamber that receives a granular bulk material forming a filter bed. The filter chamber has rectangular inner-walls with a liquid-permeable inlet side and a liquid-permeable outlet side positioned opposi... | 11/07/2000 |
| 6071422 | Particle separation method and apparatus An apparatus and method are disclosed for filtering or separating particles. The apparatus has a centrifuge rotor rotatable about an axis of rotation. A fluid chamber rotates with the rotor. A substance is supplied to the inlet of the chamber. A saturated... | 06/06/2000 |
| 6051146 | Methods for separation of particles A system and method are disclosed for separating particles having different sedimentation velocities. The system includes a fluid chamber for separating the particles form one another. Conduits are provided for flowing liquid carrying particles to the flu... | 04/18/2000 |
| 5951877 | Particle filter method An apparatus and method are disclosed for filtering or separating particles. The apparatus has a motor coupled to a centrifuge rotor rotatable about an axis of rotation. A fluid chamber rotates with the rotor. A substance is supplied to the inlet of the c... | 09/14/1999 |
| 5945005 | Fluid filter using floating media A filter system (110) includes a tank (130) with a conveyer (140) for, preferably continuously, conveying filter media (11) from a filter zone (119) in the tank (130) where the filter media (11) traps predetermined matter (16), such as particulates, to a ... | 08/31/1999 |
| 5939319 | Particle separation method and apparatus An apparatus and method are disclosed for filtering or separating particles. The apparatus has a centrifuge rotor rotatable about an axis of rotation. A fluid chamber rotates with the rotor. A substance is supplied to the inlet of the chamber. A saturated... | 08/17/1999 |
| 5879565 | Cooling tower water treatment system A cooling tower water treatment system removes contaminants include chlorine, calcium carbonate as calcite, and microorganisms from water in the system with redox media in a fluidized bed. The treatment system includes a treatment bed, in the form of a co... | 03/09/1999 |
| 5879567 | Method of purifying aquarium water using a pressurized, tank mounted, fluidized bed filter 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 having an inlet port and an out... | 03/09/1999 |
| 5770080 | Air charged backwashing bioclarifier The present invention provides a floating media bioclarifier having an economical structure which allows energy efficient and water conserving backwashing of the floating media. The bioclarifier includes a filter chamber fluidly connected to a charge cham... | 06/23/1998 |
| 5454938 | Bed height sensing device for biological reactor The invention provides a reactor apparatus including a fluid bed reactor containing a media bed composed of particulate solids and biomass adhered thereto. The reactor apparatus also includes a biomass monitoring system for measuring changes in the size o... | 10/03/1995 |
| 4976934 | Nested, recirculating-fiber filter A recirculating fiber filter (1) and method is provided for removing particulates from moving fluid streams. High aspect ratio fibers (2) are used which readily nest with each other to form the high voidage fiber filter bed. In the method, fibers are cont... | 12/11/1990 |
| 4832850 | Method and device for mass transport and separation through selective barriers The present invention relates to a new technique and device for mass transport operation and physical separation, being substantially quantitative and involving selective barriers. According to the new technique, the mass transport through the selective b... | 05/23/1989 |
| 4793934 | Method for enhancing the separation capacity of a multi-bed filtration system A multi-bed filtration system includes an upstream filter bed in series with a downstream filter bed of nonbuoyant media. Also included is a system for periodically backwashing the nonbuoyant filter bed. Coagulant-treated water is passed through the upstr... | 12/27/1988 |
| 4780219 | System for filtering suspended solids from a liquid A filtration system and method for the removal of suspended solids from a contaminated liquid in which the contaminated liquid is pumped into the top of a vessel and allowed to flow through a bed of polyethylene particles which acts as a filtering medium.... | 10/25/1988 |
| 4743382 | Method and apparatus for separating suspended solids from liquids Liquid which has been partially clarified in the settling zone of a clarifier tank is channelled through a filtration compartment containing a buoyant particulate filtration media. The media particles are periodically agitated so that trapped solids are s... | 05/10/1988 |
| 4693831 | Rise-rate control of pulsed-bed granular medium filters A method for controlling the pulsing of a granular medium filter, based on determination of the rise rate of liquid level above the filtration medium. A pulse system is activated whereby sub-fluidizing pulses of a fluid are directed upwardly through the f... | 09/15/1987 |
