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| Number | Title | Issue Date |
| 7264678 | Process for cleaning a surface A process is described wherein a surface, for example the exterior surface of a vehicle, is contacted with a cleaning composition capable of rendering the surface treated hydrophilic and then rinsed with purified rinse water. Preferably the process also involves a p... | 09/04/2007 |
| 7253332 | Method for treating cyanide waste liquid A highly reliable detoxifying method of the cyano matters is provided. The waste-liquor, which contains at least one of free cyano material, a cyano complex and a reducing compound exhibiting volatility in alkaline aqueous solution, is heated under an alkaline condi... | 08/07/2007 |
| 7238278 | Apparatus for purifying water The invention relates to a method for purifying water by forming in an electrolytic cell molecular halogen, hypohalic acid, hypohalite ions or combinations thereof, from halide ions dissolved in the water; and dissolving one or more soluble metal salts in the water ... | 07/03/2007 |
| 7214301 | Filter or filter-element for modified electro-dialysis (MED) purposes Filter or filter-element designated for Modified Electro-Dialysis (MED) purposes characterized in that the filter or filter-element comprises a porous, ceramic, mainly uniform material with functional, preferably ion selective groups grafted onto the inner, porous s... | 05/08/2007 |
| 6673229 | Electrochemical apparatus and process for purification of fluids The invention relates to an apparatus for purifying fluids comprising at least one electrochemical cell having a cathode (3), an anode (5) and an electrolyte (7), said cathode (3) comprising a metal complex, ML, where M represents a metal and L represents... | 01/06/2004 |
| 6391186 | Electrochemical process for removing ions from solution An electrochemical process, for removing or modifying ions in solution, incorporates an electrolytic cell comprising a bipolar bed of conductive and non-conductive cell particulate material spaced between two electrodes across which an electrical voltage ... | 05/21/2002 |
| 6387243 | Separation of metal ions absorbed on a resin and installation for recycling photographic effluents including an exchanger and an electrolytic vessel A method for separating metal ions absorbed on a resin includes: suspending or percolating a cationic exchange resin charged with a polar solvent containing an eluting agent or a mixture of eluting agents containing at least an organic or mineral ligand c... | 05/14/2002 |
| 6284124 | Electrodeionization apparatus and method Electrodeionization apparatus and method. The electrodeionization apparatus includes an ion-depleting compartment in which alternating layers of an electroactive media are positioned. One of the alternating layers is doped to provide a more balanced curre... | 09/04/2001 |
| 6274028 | Electrolytic wastewater treatment method and apparatus A method and apparatus for purifying aqueous effluent streams to reduce chemical oxygen demand thereof, where the method comprises direct oxidation of water-soluble organic material in an electrochemical cell that incorporates stainless steel electrodes, ... | 08/14/2001 |
| 6270650 | Electrolytic cell with porous surface active anode for removal of organic contaminants from water and its use to purify contaminated water A wet oxidation/reduction electrolytic cell, system, and method for the remediation of contaminated water is disclosed. A porous electrode of large surface area produces powerful oxidizing agents in situ without having to add any reagents, oxidizers, or c... | 08/07/2001 |
| 6235189 | Method of supplying dissolved carbon dioxide to plants in an aqueous medium The invention provides a method of supplying dissolved carbon dioxide to plants in an aqueous medium characterized by electrolyzing the water in the aqueous medium by electrodes disposed in the aqueous medium and supplied with electric current. At least o... | 05/22/2001 |
| 6228266 | Water treatment apparatus using plasma reactor and method thereof A water treatment apparatus using a plasma reactor and a method of water treatment are disclosed. The apparatus includes a housing having a polluted water inlet and a polluted water outlet; a plurality of beads filled into the interior of the housing; a p... | 05/08/2001 |
| 6200449 | Water treating apparatus with electro-chemistry process One or more water treating devices each includes a housing for receiving a number of electric conductive particles and a filter plate secured in the housing for supporting the particles in the housing. The waste water to be treated is introduced into the ... | 03/13/2001 |
| 6126838 | Method of wastewater treatment by electrolysis and oxidization Disclosed is a method for treating highly concentrated wastewater by electrolysis and oxidization, said method being characterized in that the electrolysis and oxidization are carried out in a fluidized bed of a suitable particulate carrier. The electroly... | 10/03/2000 |
| 6126811 | Electrocatalytic method for the deoxygenation of sea water and device for its implementation The invention concerns a method consisting: in passing the sea water through an electrically conductive catalyst (10), arranged in the cathode section of an electrolytic cell (1), comprising a cathode section (3) and an anode section (4) provided with, th... | 10/03/2000 |
| 6096222 | Agent to remove dissolved contaminants from water An apparatus and method for removing hydrocarbon contaminants and heavy metal ion contaminants from wastewater stream comprising the introduction of iron ions into the stream. In one embodiment, the ions are introduced by applying an electrical current th... | 08/01/2000 |
| 5954937 | Method and apparatus for capacitive deionization and electrochemical purification and regeneration of electrodes An electrically regeneratable electrochemical cell (30) for capacitive deionization and electrochemical purification and regeneration of electrodes includes two end plates (31, 32), one at each end of the cell (30). Two end electrodes (35, 36) are arrange... | 09/21/1999 |
| 5770037 | Water processing method A method for treating water with an electrolytic cell including an anode, a cathode, and a three-dimensional carbon electrode provided between the anode and the cathode, the method comprising the steps of supplying the water having an electric resistivity... | 06/23/1998 |
| 5705050 | Electrolytic process and apparatus for the controlled oxidation and reduction of inorganic and organic species in aqueous solutions Improvements on the electrolytic reactor and process of U.S. Pat. No. 5,419,816 and copending U.S. application Ser. No. 08/400,950, filed Mar. 9, 1995, now U.S. Pat. No. 5,609,742, are disclosed for the controlled oxidation and reduction of inorganic and ... | 01/06/1998 |
| 5609742 | Electrolytic process and apparatus for the controlled reduction of inorganic and organic species in aqueous solutions An electrolytic process and apparatus is disclosed for oxidizing or reducing inorganic and organic species, especially in dilute aqueous solutions. The electrolytic reactor includes an anode and cathode in contact with a packed bed of particulate ion exch... | 03/11/1997 |
| 5593563 | Electrodeionization process for purifying a liquid In an electrodeionization apparatus having a cathode compartment and an anode compartment for removing ions from a liquid under the influence of a voltage, the cathode compartment includes electron conductive particles such as metal particles and/or carbo... | 01/14/1997 |
| 5569388 | Method of controlling the growth of microorganism in a liquid with tourmaline crystals A method of electrodepositing removal of ionic material using tourmaline crystal and tourmaline crystal with electrodeposited metal according to the present invention utilize electrodepositing phenomenon whereby to the cathode (negative pole) of tourmalin... | 10/29/1996 |
| 5565107 | Process and apparatus for purifying streams A process for purifying streams which contain organic and/or inorganic impurities is disclosed. The stream to be treated is introduced into a water-containing reaction zone which includes a packed bed of activated carbon to which an electrochemical potent... | 10/15/1996 |
| 5558755 | Method for removing contaminants from an aqueous medium Apparatus and method for removing contaminants from an aqueous medium. The apparatus includes a fluidized bed of metallic particles through which the medium is flowed and through which an electric current is applied by electrodes for agglomerating contami... | 09/24/1996 |
| 5443700 | Method for treating waste water containing oil composed of esters, and treating apparatus thereof A method for treating waster water containing oil composed of esters, which makes reactivation of spent adsorbent possible or unnecessary, and facilitates treatment of waste adsorbent. In order to realize the above method, oil composed of esters is adsorb... | 08/22/1995 |
| 5364527 | Apparatus and process for treating water An apparatus for removing cations/anions from liquids including a container provided with an anode mounted centrally in the container, a cathode surrounding the anode and a layer of ion exchange material mounted between the cathode and anode, the cathode ... | 11/15/1994 |
| 5288373 | Process of removing cyanide from waste water A process for removing cyanide from liquid waste by electrolysis is disclosed. The method includes combining waste water and NaCl to an electrolyser cell, the cell having positive and negative electrode plates. The NaCl concentration in the cell is mainta... | 02/22/1994 |
| 5256264 | Process and apparatus for the in-situ decontamination of ground water containing heavy metals A process and apparatus for the in-situ decontamination of ground water polluted with heavy metal ions, wherein a ground water peak (26) is built up by means of gasification (24) in a well pipe (10), and a current is produced in the ground water. The curr... | 10/26/1993 |
| 5183565 | Apparatus and process for treating water The invention relates to an apparatus for removing cations/anions from liquids, having a container material between a cathode and the layer of ion exchange material between the anode and the cathode and a free liquid-filled space as a treatment space betw... | 02/02/1993 |
| 4929359 | Treatment of concentrated industrial wastewaters originating from oil shale and the like by electrolysis polyurethane foam interaction Highly concentrated and toxic petroleum-based and synthetic fuels wastewaters such as oil shale retort water are treated in a unit treatment process by electrolysis in a reactor containing oleophilic, ionized, open-celled polyurethane foams and subjected ... | 05/29/1990 |
| 4802991 | Method and apparatus for water purification A method and apparatus for water purification, wherein ions are released from electrodes during electrolysis and combine with impurities to form a floc which, in turn, absorbs other impurities. A moving bed of solid, non-conductive particles surrounding t... | 02/07/1989 |
| 4383901 | Method for removing metal ions and other pollutants from aqueous solutions and moist gaseous streams This invention concerns the electrochemical removal of metal ions and certain other contaminating ions from aqueous solutions and moist gas streams. Direct current from an external source is caused to flow through electrically conductive particulate eleme... | 05/17/1983 |
| 4329211 | Simplified maintenance electrocoagulator An improved method and apparatus for electrocoagulating waste water or fluids to remove colloidal suspensions therein is described. The apparatus includes at least one module having a plurality of closely spaced, flat electrodes defining a plurality of fl... | 05/11/1982 |
| 4280886 | Method for treatment of sewage The present invention relates to a method for removing suspended matter, organic matter, foaming matter and nitrogen compounds in sewage and to an apparatus for the method. The suspended matter and the organic matter are removed by means of first fine bub... | 07/28/1981 |
| 4218315 | Oxidation and adsorption method for removing contaminating substances from liquids The specification describes an oxidation and adsorption method for removing contaminating materials (pollutants) from aqueous liquids. The liquids are first subjected to an electrochemical treatment for the purpose of coagulation or agglomeration and part... | 08/19/1980 |
| 4131526 | Process and apparatus for removal of contaminants from water Oxidizable contaminants in waters, such as feed waters and waste waters wherein they are present in relatively large or small proportions, are removed therefrom by alternating current electrolysis in an electrolytic cell containing catalyst-containing par... | 12/26/1978 |
| 4130483 | Sewage treating and conversion process Aqueous sewage is conducted in series through two filter beds with which the sewage reacts within settling tanks. The tanks are charged with particulate coke formed from the coking of a high sulphur coal with steam. The gaseous products of the coking oper... | 12/19/1978 |
| 4094755 | Water purification method An improved method and apparatus for continuously agglomerating solids of colloidal size of larger suspended in a liquid is disclosed. The process comprises passing the liquid between spaced electrode plates in the presence of a fluidized bed of conductiv... | 06/13/1978 |
| 4053378 | Water purification method and apparatus An improved method and apparatus for continuously agglomerating solids of colloidal size or larger suspended in a liquid is disclosed. The process comprises passing the liquid between spaced electrode plates in the presence of a fluidized bed of conductiv... | 10/11/1977 |
| 4048030 | Electrolytic cell for treatment of water The specification describes an electrolytic cell for the treatment of water, comprising a closed container with a lower inlet opening and an upper outlet opening for the water and a cathode and an anode. In the interior of the electrolytic cell particles ... | 09/13/1977 |
