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| Number | Title | Issue Date |
| 8152998 | Screenless granular media filters and methods of use A liquid filtering apparatus is placed in a vessel having a bed of filtration material, the bed comprising at least two different sizes of filter media wherein the filtration material is stratified using upper and lower spaced apart inverted cones so that the unfilt... | 04/10/2012 |
| 7909992 | Separation apparatus A separation apparatus comprising, a series of compartments for holding particulate separation material, arranged so as to allow fluid to flow through the compartments in a primary direction from a first compartment in the series to a last compartment in the series,... | 03/22/2011 |
| 7862715 | Apparatus for removing undesirable components from a contaminated solution containing both desirable and undesirable components A method and apparatus for separating purifying media from a treated fluid. The method includes transporting the purifying media and the treated fluid along a substantially horizontal direction while a substantial quantity of purifying media fall along a substantial... | 01/04/2011 |
| 7678268 | Wastewater treatment system The invention is directed to a method and apparatus for treating wastewater. The wastewater treatment system includes a bioreactor including activated carbon and a first biological population. The wastewater treatment system may also include a membrane bioreactor an... | 03/16/2010 |
| 7563366 | System for removing BOD and suspended solids through an activated sludge process and a ballasted flocculation process A method and system for treating water or wastewater to remove both soluble BOD and suspended solids. The method entails directing first and second water or wastewater streams to a treatment system including an activated sludge system and a ballasted flocculation sy... | 07/21/2009 |
| 7459076 | Flow-through aerobic granulator A continuous flow reactor or method promotes aerobic granule formation. The reactor may comprise three or four zones that may comprise one or more of an aerobic zone, an alternately aerobic and anoxic zone or discrete aerobic and anoxic zones, and a settling zone. T... | 12/02/2008 |
| 7435864 | Method and device for the production of alkylates Disclosed is a device for the production of alkylate(s) by sulfuric acid alkylation of at least one isoparaffin such as isobutane with at least one olefin, such as butylenes. The device includes a mixing chamber for preparing a mixture of the isoparaffin with recycl... | 10/14/2008 |
| 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 for take off from the filtration vessel. The inlet is configured to i... | 03/11/2008 |
| 7334415 | Cooling system and method for using cooling system A cooling system is provided having a first heat exchanger for heating a cooling liquid, a second heat exchanger, which preferably comprises an evaporator, for cooling the cooling liquid, and a pump for guiding the cooling liquid through the first and second heat ex... | 02/26/2008 |
| 7326347 | Dynamic up-flow zeolite system and method Systems and methods are provided for the removal of a contaminate from an aqueous medium using a zeolite-based sorption column. The systems and methods include an optimized relationship between the hydraulic loading, zeolite mesh size, distribution of zeolite mesh s... | 02/05/2008 |
| 7273555 | Process for continuous ion exchange A process for continuous countercurrent ion exchange comprises piping a contaminated feed stream into a closed loop ion exchange contactor. The contactor is an ion exchange bed that has three or more reaction segments. The segments are comprised of at least an adsor... | 09/25/2007 |
| 7264715 | Apparatus for treating organic wastewater and sludge A process and an apparatus for efficiently recovering magnesium ammonium phosphate (MAP) crystals of high purity and good quality in the technique of removing phosphorus and the like as MAP crystals from wastewater containing high concentration organic substance, ph... | 09/04/2007 |
| 7261811 | Liquid-solid circulating fluidized bed waste water treatment system for simultaneous carbon, nitrogen and phosphorus removal Biological nutrient removal (BNR) in municipal wastewater treatment to remove carbonaceous substrates, nutrients and phosphorus, has recently become increasingly popular worldwide due to increasingly stringent regulations. Biological fluidized bed (BFB) technology, ... | 08/28/2007 |
| 7235183 | Glycerine foots salt separation system The present invention provides a method and apparatus for the recovery of salt from a glycerine process, allowing the salt to be used in a brine solution. A salt settling tank is positioned inline between the foots from a crude still bottom and a foot still. Salt se... | 06/26/2007 |
| 7175766 | Apparatus and method for performing tertiary treatment of sewage based on porous filtering media Provided is an apparatus and method for performing tertiary treatment of sewage based on porous filtering media. The apparatus for performing tertiary treatment of sewage based on porous filtering media includes a reaction tank for receiving effluent wastewater from... | 02/13/2007 |
| 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 contain a column of media therebetween. The influent is passed radially ... | 01/16/2007 |
| 7097766 | Sand filter with rotating vanes The present invention is a media-based fluid filtration system that extends the time between backwashing operations and prevents the agglomeration of filtered particles at the top of the media bed through the use of a plurality of rotating vanes and associated tines... | 08/29/2006 |
| 7094325 | EDI and related stacks and method and apparatus for preparing such Apparatus and method are disclosed for introducing ion exchange or other particulates into compartments of an already-assembled electrodeionization or comparable stack by modulating a flow of slurry into the compartments with slugs of gas such as air. The air propel... | 08/22/2006 |
| 7045057 | Preparation of homogeneously loaded ion exchangers A process for preparing an ion-exchangeable media within a moving-bed or simulated moving-bed device, which can create a true or simulated media flow, comprising the steps of packing the bed with ion-exchangeable media and passing a solution, containing a mixture of... | 05/16/2006 |
| 7033493 | Method and apparatus using super absorbent polymers for dehydration of oil Water is separated from an emulsion of water and oil by passing the emulsion through a bed of superabsorbent polymer granules which break the emulsion and absorb water from the mixture of water and oil. An apparatus for separating water from an emulsion of water and... | 04/25/2006 |
| 7024814 | Fish or fish bait life preservation apparatus and method A novel system, apparatus and method of operation for use in watercraft, terrestrially bound motor vehicles and fixed based land applications where water from a live well or bait tank is withdrawn, filtered, climactically controlled and conveyed through a water cond... | 04/11/2006 |
| 6962019 | Enhanced filtration and water conditioning system for a bait tank An enhanced filtration and water conditioning system for a novel bait tank suitable for use in recreational boats, dockside and land based personal and commercial applications wherein water from the tank may be climactically controlled, filtered, purged of sediment,... | 11/08/2005 |
| 6915896 | Cleaning drain apparatus for an auger assembly A drain apparatus for the intake end of an auger is disclosed. The drain apparatus comprises a bearing with radial arms, a cover with a cover portion, a drain and a drain cap for removably closing the opening of the drain. The drain apparatus facilitates a clean in ... | 07/12/2005 |
| 6866788 | Method and device for purifying aqueous effluents by catalytic oxidation The invention concerns a method for purifying aqueous effluents, in particular polluted water, by catalytic oxidation using a three-phase reactor comprising two communicating chambers. The invention is characterised in that it consists in: maintaining the catalyst s... | 03/15/2005 |
| 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 |
| 6780312 | Filtration apparatus A filtration apparatus comprising a container that houses a filtration tank to which contaminated water is supplied, a cleansing tank, and a screw conveyor disposed within said cleansing tank is provided. Filtration media is housed within the cleansing tank and the ... | 08/24/2004 |
| 6716344 | Liquid-solids circulating fluidized bed A continuous Liquid-Solids Circulating Fluidized Bed (LSCFB) preferably for use as an ion exchanger consists of two fluidized bed columns, a fluidized bed adsorber (downer) operating in conventional fluidized bed mode for adsorption of ions of interest and a fluidiz... | 04/06/2004 |
| 6712962 | Ion chromatography system for exchanging an ion exchanger in a suppressor and a suppressor means An ion chromatography system having a suppressor means which is provided with a main body for accommodating an ion exchanger ready for measuring; a chamber for accommodating a virgin ion exchanger, and an automatic exchanging means which discharges a used ion exchan... | 03/30/2004 |
| 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 |
| 6527960 | Jet pump treatment of heavy oil production sand A process for separating oily films from sand particles carried in a solvent free water stream includes the use of a jet pump scrubber in a density classification tank to treat such oily coated particles at controlled operating temperatures above 65° C. ... | 03/04/2003 |
| 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 |
| 6517708 | Apparatus for separating oxides of heavy isotopes of hydrogen from water A process and apparatus for treating the heavy hydrogen isotope content of the contaminated water by contacting the contaminated water with a molecular separation material including a support medium carrying a plurality of hydration sites having associate... | 02/11/2003 |
| 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). The apparatus is made up of: a partition wall (2) provided insid... | 10/29/2002 |
| 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 height and weight of the filter. A transport pipe is provide... | 05/07/2002 |
| 6322704 | Radial-flow fluidizable filter A radial flow fluidized unit (RFFU) (250) employing non-bonded media particles (56) for removing impurities from an influent, that can be backwashed and/or regenerated by fluidizing the media particles (56) to free the impurities therefrom. During a fluid... | 11/27/2001 |
| 6296761 | Water treatment process An improved water softening process is provided which also reduces anion content. A first stream of water is passed through an anion-exchange unit to remove undesirable anions and raise the pH. The first stream of water is then provided to reactor/clarifi... | 10/02/2001 |
| 6228257 | Apparatus for contacting fluids and solids Methods and apparatus for contacting solids and fluids are provided, where the fluids are allowed to traverse a downward path through a plurality of vertically arranged chambers in which said solids are located. The solids may be transferred upwardly thro... | 05/08/2001 |
| 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 |
| 6077426 | Filter filled with loose bulk material A filter with a horizontally fed filter chamber having loose bulk material as the filter medium has a wall on the upstream side and downstream side to hold back the loose bulk material in the filter chamber. The filter chamber includes a compressed air-li... | 06/20/2000 |
| 5833867 | System and method for backwashing multiple filtration vessels A filter media washing system for washing contaminants from filter media of a plurality of filtration vessels. Each filtration vessel has a filtration screen subdividing the filtration vessel into a filter media containing chamber and a filter media-free ... | 11/10/1998 |
