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| Number | Title | Issue Date |
| 8092694 | Secondary filtration device applicable to a three-phase process The present invention describes a device allowing secondary filtration of catalyst particles contained in an effluent from a process comprising a reactor operated in three-phase mode. ... | 01/10/2012 |
| 7967992 | Method and device incorporating granular particles and disc-shaped plastic pellets for filtering water A novel water flow facilitator for granular filter devices that operate under gravity and contain granular particles, further consisting of plastic pellets that are 2 to 100 times, preferably 5 to 20 times larger than the granular particles; the plastic pellets havi... | 06/28/2011 |
| 7871528 | Water filter The water filter including a container, which has a bottom and a cover, wherein several inlets are provided on the border of the cover and an outlet is provided in the centre of the bottom. A spiral channel is located in the container, through which the inlets are c... | 01/18/2011 |
| 7435351 | Filter apparatus backwash removal device and backwash removal method A filter media backwash removal method and device for transporting backwash fluid and solids away from re-entering a housing containing circulating filter media. ... | 10/14/2008 |
| 7425274 | Aquarium filter unit An aquarium filter which is constructed of a housing which includes a module. The module is divided into a plurality of different sections. A separate filter cartridge is to be mounted within each section. Each filter cartridge is to be removable and replaceable in ... | 09/16/2008 |
| 7416667 | Polyurethane oil de-emulsification unit A process for separating an aqueous emulsion including an aqueous phase and an non-aqueous phase into separated aqueous and non-aqueous phases, to provide a recovered non-aqueous phase, and to provide a recovered aqueous phase containing an acceptable level of the n... | 08/26/2008 |
| 7331923 | Insemination device An insemination device including a sperm reservoir including sperm therein, a pump in fluid communication with the sperm reservoir and operative to pump sperm therefrom, and a filter in fluid communication with the pump adapted to filter the sperm to form a sperm fi... | 02/19/2008 |
| 7303683 | Microorganism-removing filter medium having high isoelectric material and low melt index binder A filter medium capable of removing microorganisms from a fluid such as water. The filter medium includes particles of activated carbon, particles of a substantially insoluble inorganic material having an isoelectric point greater than the fluid being filtered. A lo... | 12/04/2007 |
| 7258798 | Potable water treatment plant and method of maintaining same A package plant for treating raw water to yield potable water. The package plant includes an inlet for raw water, followed by an ozonator for disinfecting the water. Next is provided an up flow roughing filter including a chemically active layer, on top. A slow sand... | 08/21/2007 |
| 7247241 | Process for treating lipophilic fluid Process for treating lipophilic fluids employing filters, more particularly, multifunctional filters that are capable of removing as well as adding components to lipophilic fluids being filtered are provided by the present invention. ... | 07/24/2007 |
| 7223347 | Apparatus and method for filtering fluids The present invention provides an apparatus and method for filtering fluids with a compressible filter media within at least a portion of a housing inwardly compressible. ... | 05/29/2007 |
| 7195710 | Systems and methods using multiple solvents for the removal of lipids from fluids This invention is directed to systems and methods for removing lipids from a fluid or from lipid-containing organisms from a fluid, such as plasma. These systems combine a fluid with at least one extraction solvent, which causes the lipids to separate from the fluid... | 03/27/2007 |
| 7156995 | Aeration tank control valve system Mineral contaminants are removed from water in a system in which water is sprayed into an air head at the top of a tank through a diffuser and withdrawn through a pick-up tube. A solenoid valve operates to allows air from a compressor to flow into the top of the tan... | 01/02/2007 |
| 7108794 | Recycled tire pipe fluid purification process and apparatus for liquids including stormwater A method of conveying and purifying fluids including stormwater by passing fluid through an assemblage of tires fastened together by physical and chemical means, and an apparatus for carrying out the same method, are disclosed. The apparatus according to the ... | 09/19/2006 |
| 7033500 | Systems and methods using multiple solvents for the removal of lipids from fluids This invention is directed to systems and methods for removing lipids from a fluid or from lipid-containing organisms from a fluid, such as plasma. These systems combine a fluid with at least one extraction solvent, which causes the lipids to separate from the fluid... | 04/25/2006 |
| 7033498 | Cartridges useful in cleaning dialysis solutions Cartridges useful in regenerating or purifying dialysis solutions are described as well as methods to regenerate or purify spent dialysis solutions. Dialysis systems using the sorbent cartridges of the present invention are further described. ... | 04/25/2006 |
| 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) to the bottom layer (fourth layer), the coarseness of the partic... | 04/18/2006 |
| 7014783 | Flow splitting weir A method of minimizing head loss in a filter system including a plurality of drop pipes, a plurality of filter cells having a maximum influent level, and a distribution box having a maximum influent level, a base, and a plurality of distribution cells. The method in... | 03/21/2006 |
| 6969469 | Method of using waste tires as a filter media The present invention is a method of using crumb rubber from recycled tires as a filter media. The use of crumb rubber as a media differs from conventional sand or anthracite filters in several ways. The crumb rubber media is compressible which allows the porosity b... | 11/29/2005 |
| 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 filtration to the water flow, and a self-cleaning filter to provide a thi... | 10/25/2005 |
| 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 has flown through the inlet, the primary regenerable filter configured... | 08/30/2005 |
| 6712898 | Perlite products with controlled particle size distribution Expanded perlite products having controlled particle size distribution, methods of producing the expanded perlite products, and methods of use thereof are provided. The expanded perlite product has, for example, a low ratio of standard deviation of particle size dis... | 03/30/2004 |
| 6656587 | Composite particles Buoyant, sphere-like materials on the order of about 10 to about 300 microns and surrounded, at least in part, by (1) a variable blend of a ferromagnetic and paramagnetic material and (2) an absorbing or adsorbing material are effective vehicles for isola... | 12/02/2003 |
| 6630071 | Process for the treatment of waste water containing heavy metals A process for the treatment of waste water containing heavy metals in which sulphur components and/or metals are biologically reduced to precipitate the metals as water-insoluble metal species, which are separated from the waste water. The biological redu... | 10/07/2003 |
| 6599429 | Water treatment product and method A water treatment product which is a particulate material having a specific surface area of at least 1.0 m2 /g, or an artefact formed by bonding together such particulate material, and having an insoluble ferric iron coating. Perferably, the pa... | 07/29/2003 |
| 6464884 | Portable water treatment unit A portable water treatment unit is provided for purifying contaminated water, especially in the aftermath of a natural disaster that compromises a region's water supply. The treatment unit is configured to treat water drawn into the unit. The treatment un... | 10/15/2002 |
| 6464770 | Perlite products with controlled particle size distribution Expanded perlite products having controlled particle size distribution, methods of producing the expanded perlite products, and methods of use thereof are provided. The expanded perlite product has, for example, a low ratio of standard deviation of partic... | 10/15/2002 |
| 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 |
| 6419843 | Sewer apparatus An improved sewer apparatus comprising a maintenance hole and an influent line for carrying sewage to the maintenance hole, a vortex form disposed substantially within the maintenance hole which accepts the sewage from the influent line, the vortex form h... | 07/16/2002 |
| 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 |
| 6325943 | Method of treating water using aerator and level-responsive vent valve A water treatment apparatus provides treatment of water to remove, for example, hydrogen sulfide and iron, dissolved or dispersed in ground water. The system is provided with water from a conventional well and pump and includes a venturi-type aerating dev... | 12/04/2001 |
| 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 for bleeding water from the heating or cooling plant to t... | 11/27/2001 |
| 6197204 | Zinc oxide fluid treatment The concentration of dissolved arsenic in water is reduced by contacting the water containing the arsenic with zinc oxide.... | 03/06/2001 |
| 6190548 | Multi-chambered treatment filter An enclosed, elongated structure for placement in the ground to filter and biologically pretreat wastewater after it leaves a septic tank and before it enters a drain field. The structure includes an upstream chamber or compartment connected to an inlet a... | 02/20/2001 |
| 6187194 | Packaged aeration and filtration system An aeration and filtration system for eliminating waste products in a fluid body having a surface floor is disclosed. The aeration and filtration system includes a support bed disposed above the surface floor of the fluid body and a filter bed of porous m... | 02/13/2001 |
| 6177016 | Water purification methods with in situ generation of metal hydroxide flocculants The present invention is directed to methods for purifying wastewater, including water which may or may not contain fatty acids or oils, by producing in situ a hydrophobic flocculant including a water-insoluble metal hydroxide. In the preferred methods, m... | 01/23/2001 |
| 6165366 | Process for removing mercury from industrial and clinical waste water A process is described for the removal of mercury present at levels of 1-5000 ppb in waste water discharged from clinical research laboratories, industries and hospitals. The process involves preoxidation of the influent waste water with very small amount... | 12/26/2000 |
| 6161308 | Slimes treatment The invention relates to a method of producing a thickened slimes fraction blended with a tailing fraction for delivery to a discharge or disposal point (38). The method includes the steps of forming a bed of tailings fraction on a de-watering screen (28)... | 12/19/2000 |
| 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 |
| 6139745 | Purification apparatus A purification apparatus and method for enabling the purification of the lake and pond waters, is installed as a fluidized bed sewage system directly on the raw water area. The apparatus takes in the raw waters in the lake and pond and purifies the water.... | 10/31/2000 |
