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| Number | Title | Issue Date |
| 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 |
| 7132088 | Granular moving-bed apparatus A granular moving-bed apparatus is introduced to have an inlet louvered wall, an outlet louvered wall opposing to the inlet louvered wall, a granular path formed in between, a plurality of serial roof-shaped flow-corrective elements located along the granular path, ... | 11/07/2006 |
| 7114668 | Constructed wetlands system, treatment apparatus and method A system, apparatus and method for treating water in a landscape pond so as to enhance the water clarity, where the water to be treated is delivered to a treatment pond to reduce the particulate matter and nutrient level of the water. The treatment pond includes a n... | 10/03/2006 |
| 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 |
| 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 |
| 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 |
| 6550264 | Air conditioner discharge water saver system A gravity-assisted water saving system, and a method for its use, that can be utilized to collect the condensate from an air conditioning system, sanitize it, and then divert it for constructive use. It has a chamber with an inclined bottom surface, a dim... | 04/22/2003 |
| 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 |
| 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 |
| 6403384 | Device and method for analyzing a biologic sample A device and method for separating a fluid component from a non-fluid component of a sample comprises a plurality of microspheres disposed in abutting relation and forming therebetween a plurality of capillary channels, whereby when the microspheres are d... | 06/11/2002 |
| 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 |
| 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 |
| 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 |
| 6334956 | Adsorption or desorption of dissolved constituents in liquids and apparatus therefor To adsorb, on solid adsorbent particles, constituents dissolved in liquid, or to desorb (extract), from solid desorbent particles, soluble constituents in liquid, in a container a packed bed formed from granular material is mixed with adsorbent particles ... | 01/01/2002 |
| 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 |
| 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 |
| 5976365 | Biomass growth control apparatus for fluid bed biological reactor A reactor apparatus including a fluid bed reactor wherein liquid to be processed is conducted upwardly therein through a solid bed to fluidize the bed, the bed including particulate solids having biological material supported thereon, and the liquid formi... | 11/02/1999 |
| 5895567 | Biological waste fluid cleaner The invention relates to an apparatus for cleaning organic waste material from waste fluid. This comprises a container at least partially filled with carrier elements, a waste fluid feed debouching into the container close to a vertical end, a fluid outle... | 04/20/1999 |
| 5885462 | Process for reducing the concentration of multivalent cations in aqueous solutions The process consists in passing the liquid to be purified and a superabsorbent, preferably of polyacrylic type, through a column, the upward speed of the liquid being chosen such that, in the column, the superabsorbent which is merely swollen is in a stat... | 03/23/1999 |
| 5755959 | Device for supplying a suspension to a filter at different levels within the filter and in proportions such that a uniformly distributed flow of suspension is achieved across the filter area A suspension is delivered to a filter bed comprised of granular filter medium in a continuously working filter at the lower part of the bed and is then permitted to flow upwards through the bed. With the intention of optimizing the capacity of the filter,... | 05/26/1998 |
| 5746913 | Continuous sand filter A continuous sand filter has a tank provided therein with a first separation container and a second separation container. The continuous filtration of the waste water is carried out in the first separation container and the second separation container. Th... | 05/05/1998 |
| 5711874 | Water treating apparatus A water treating apparatus consisting of a water path having entrance(s) and exit(s) and ceramic grain(s) movably inserted in said water path is provided in the present invention. When water is put in said water path of said water treating apparatus, said... | 01/27/1998 |
| 5707514 | Water treating method and apparatus treating waste water by using ion exchange resin A water treating apparatus is provided which can treat waste water for use as raw water in an ultrapure water producing system without addition of various kinds of chemicals. The apparatus includes a first water tank for receiving acid waste water, a seco... | 01/13/1998 |
| 5698106 | Filtration process and apparatus It is possible to filter a suspension or emulsion in a filter bed of particulate filter medium by allowing the suspension to flow upwards through the filter bed simultaneously as the medium flows downwards through a filtering tank wherein filtration takes... | 12/16/1997 |
| 5681472 | Method and apparatus for separating gaseous bubbles and sand from a liquid flow A filtering process for and apparatus separating air bubbles and granular filter medium from a filtrate contaminated by the filter medium and bubbles when passing through a filter bed formed by the filter medium for treatment of a suspension or liquid sol... | 10/28/1997 |
| 5582722 | Continuous self-cleaning filtration unit An improved vertical filtration unit includes a bell-shaped lower end for the air-lift tube, an injection ring for introducing air into the air-lift tube at a considerable volume, and a washbox with a more efficient scrubbing arrangement for washing dirt ... | 12/10/1996 |
| 5580445 | Continuous ion exchange apparatus Disclosed is a novel continuous ion exchange apparatus capable of performing both ion exchange treatment and regeneration treatment within a single column by the use of ion exchange resin(s) whose ion exchange abilities can be regenerated by acid or alkal... | 12/03/1996 |
| 5543037 | Dynamic filtration filter apparatus with level control and deflector plate A filter apparatus of the dynamic mass granular filter type, for filtering contaminants from a liquid includes a vessel which contains a first chamber, a second chamber and a conduit pipe which connects the two chambers. The first chamber includes a sump ... | 08/06/1996 |
| 5520804 | Deep bed filtration system A deep bed filter system comprising a plurality of filter media beds, each having a respective media regeneration sub-system that includes some components associated with an individual filter bed and other components that are shared with all filter beds i... | 05/28/1996 |
| 5462654 | Dynamic moving bed filter apparatus A filter apparatus of the dynamic mass granular filter type, for filtering contaminants from a liquid includes a vessel which contains a first chamber, a second chamber and a conduit pipe which connects the two chambers. The first chamber includes a sump ... | 10/31/1995 |
| 5454959 | Moving bed filters A moving bed filter in which the liquid to be filtered is introduced into an internal chamber centrally disposed in the filter bed. The liquid flows through the filter bed to filtration nozzles which are disposed near the outer periphery of the filter bed... | 10/03/1995 |
| 5330652 | Fluidized bed reactor and distribution system This invention provides a fluidized bed reactor with improved method and apparatus for inhibiting and clearing clogging of the fluid distribution network in such reactor. In particular, at least one channel or reservoir of fluid is provided over at least ... | 07/19/1994 |
| 5277829 | Deep bed sand filter A deep bed upflow filter (10) for removing suspended solids from an influent stream to provide a clean filtrate, comprising an upright vessel (12) having a vertical axis (14), top and bottom ends (16,18) and contiguous upper (20), lower (22), and intermed... | 01/11/1994 |
| 5213683 | Apparatus for charging and discharging of chromatography column bed A chromatography column having a media supply and product/buffer inlet assembly positioned at the inlet of a dispersion section at the top of the column and an outlet assembly positioned at the collection section at the bottom of the column for receiving ... | 05/25/1993 |
| 5173194 | Filtration method and apparatus having a filtrate collection chamber within the filter bed A filtration apparatus includes a vertical column of filter media contained in and defined by a liquid-impervious vessel. A filtrate collection chamber is fixedly and centrally located in the media column. The collection chamber has liquid impervious top ... | 12/22/1992 |
