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| Number | Title | Issue Date |
| 7332079 | Floatation process for removal of heavy metal waste and associated apparatus The present invention is a floatation process and associated apparatus for removing heavy metal waste from various effluent water streams. The process and apparatus generally introduces a population of fine diameter air bubbles and one or more flocculating chemicals... | 02/19/2008 |
| 7276154 | Settling grid separator A settling grid separator apparatus and method of use which provides deep dehydration of high flow rate sludge in an environmentally friendly and energy efficient manner. The apparatus and method comprise and utilize an efficient mixing of the sludge with a floccula... | 10/02/2007 |
| 7264729 | Process for reducing contaminants in condensate resulting from the conversion of bauxite to alumina This invention relates to a process for reducing the contaminants in condensate resulting from the conversion of bauxite to alumina. ... | 09/04/2007 |
| 7258800 | Electrocoagulation waste water batch tank treatment system A waste water treatment system and process for treating waste water received in a batch tank. The waste water is discharged in a headwork screen for removing large solids in the water. The solids are into a sludge drying bin. The screened water is transferred into a... | 08/21/2007 |
| 7166290 | Methods for producing oocysts The present invention provides improved methods and compositions for producing oocysts. The oocysts produced according to the invention find use in the manufacture of vaccines. In preferred embodiments, the present invention provides methods and compositions for the... | 01/23/2007 |
| 7160472 | Treatment of a waste stream through production and utilization of oxyhydrogen gas Methods and systems for treating a waste stream in a waste treatment system involve performing a unit process of the waste treatment system by contacting the waste stream with oxyhydrogen-rich gas generated on-site by an oxyhydrogen gas generator that implements wat... | 01/09/2007 |
| 7156999 | Methods and apparatus for treating animal manure A method of treating animal manure yielding a final liquid fraction and solid fractions whereby the final liquid fraction has a suspended solids (SS) content of about 3 g/L or lower comprising subjecting at least a part of said manure to a first biological passive f... | 01/02/2007 |
| 7105094 | Method for the removal of heavy metals from acidic wastewater and chemical solutions A method which uses a process reactor having three separate reaction stages to remove high concentrations of heavy metals from acidic wastewater and chemical solutions. During each of three stages the pH level of the wastewater is increased and sludge and flocculate... | 09/12/2006 |
| 7048854 | Apparatus for the removal of heavy metals from acidic wastewater and chemical solutions An apparatus which uses a process reactor having three separate reaction stages to remove high concentrations of 3000 mg/l heavy metals from acidic wastewater and chemical solutions. During each of three stages the pH level of the wastewater is increased and sludge ... | 05/23/2006 |
| 7014781 | Methods and articles for maintaining hydantoinylated polymers in a biocidally active state A composition and the method for sustaining the biocidal activity of chlorinated polystyrene hydantoin beads. The method comprises supplying a continuous low level halogen concentration to the chlorinated polystyrene hydantoin beads in the water to be treated that f... | 03/21/2006 |
| 6923901 | Non-chemical water treatment method and apparatus employing ionized air purification technologies for marine application Contaminated water, particularly, ballast water, blackwater, galley water, accommodation water, laundry water, fresh water and seawater, is disinfected by admixture of a highly reactive gas stream containing ions of oxygen and nitrogen, formed by exposure of air to ... | 08/02/2005 |
| 6649067 | Flotation method A flotation method in which the gas bubbles for inducing flotation of the solids in the liquid are produced by a chemical reaction, for example a decomposition of hydrogen peroxide to oxygen and water, induced by catalytic action. The catalyst is on the w... | 11/18/2003 |
| 6475384 | Flotation reactor and method for flotation The invention relates to a flotation method and a flotation reactor. The invention provides a method and a device, wherein the formation of the gas bubbles needed for flotation are produced by catalytic reaction of a chemical substance, i.e. H2... | 11/05/2002 |
| 6350380 | In situ immobilization within density variant bodies of water A method for treating in situ large bodies of water contaminated with heavy metals and having varying density stratas to immobilize the contaminant metals is disclosed. The method, or process for in situ immobilization of metals is focused on treating lar... | 02/26/2002 |
| 5741426 | Method for treatment of contaminated water A method and apparatus for treatment of contaminated water, containing undesired solid, liquid, and/or gaseous materials includes an electro-floculation means for disassociating ions from the undesired solid material and from the contaminated water, and f... | 04/21/1998 |
| 5708108 | Water treatment polymer containing polyoxy-(hydroxymethyl)-1,2-ethanediyl!! macromonomers and methods of use thereof A polymer and method of controlling corrosion and the formation and deposition of scale imparting compounds in water systems is disclosed. The polymer has the general structure: ##STR1## wherein E1 comprises the repeat unit obtained after ... | 01/13/1998 |
| 5702612 | Method and apparatus for flotation separation A flotation method and apparatus for separating a selected constituent from an effluent of an industrial process is provided. The apparatus includes a conditioning tank and a flotation cell. The conditioning tank allows mixing a flotation reagent with an ... | 12/30/1997 |
| 5512171 | Particle separator This invention relates to a separator device for the separation of fine particles from a contaminated liquid. The device utilizes the process of electrolysis to produce small gas bubbles which attach themselves to the fine particles and move the particles... | 04/30/1996 |
| 5510039 | Method for separating off solid materials The method serves for the separation of solid materials out of a suspension and is, as a rule, implemented as a floatation method. The suspension (S) to be clarified is added tangentially from the outside at the periphery of a substantially cylindrical cl... | 04/23/1996 |
| 5275732 | Combined coarse and fine bubble separation system A high rate multi-stage bubble separation process is developed for: (a) initially generating coarse gas bubbles with diameters greater than 80 microns in turbulent hydraulic condition to mix an influent water with chemicals, enzymes, microorganisms, or co... | 01/04/1994 |
| 5240600 | Water and wastewater treatment system A biological treatment system involving the use of a gas dissolving pressure vessel, a pressurized water release assembly, a pretreatment chamber, a bioreactor, an open vessel, a post-treatment unit, a sludge removal unit, and a removable gas collection a... | 08/31/1993 |
| 5176835 | Apparatus for continuous purification of liquids An apparatus and method for the continuous clarifying of liquids containing suspended solid substances comprises a flotation cell with a liquid head height of less than 1 meter, with a ratio between the liquid head and the cell diameter comprised between ... | 01/05/1993 |
| 5167806 | Gas dissolving and releasing liquid treatment system An improved gas dissolving and releasing liquid treatment system involving the use of multi-stages gas dissolving pressure vessel and the use of a pressurized water release assembly and an open vessel is described. The gas dissolving and releasing liquid ... | 12/01/1992 |
| 5160438 | Method and means of sampling large regions of liquid for pollution or biological activity using bubbles A unique bubble production system and method for sampling and cleaning la regions of "dirty" or polluted bodies of water, or for otherwise sampling them for other biological activity. This is achieved by the use of millions to trillions of tiny chemical ... | 11/03/1992 |
| 4913826 | Fat, oil and grease flotation treatment of poultry and food industry waste water utilizing hydrogen peroxide Treatment of poultry processing plant waste water in dissolved air flotation unit and/or grease trap with hydrogen peroxide.... | 04/03/1990 |
| 4769154 | Chlorine oxidation waste water treatment method A method for oxidation treatment of waste water material containing organic solid particles includes forming a discrete batch of waste water material, adjusting the pH of the entire batch to close to 7 or acid-alkaline neutral, and then flowing the batch ... | 09/06/1988 |
| 4724045 | Pulp decolor process A process for the decolorization of alkaline pulp such as that derived from paper waste water wherein the waste water is contacted with a strong mineral acid, contacted with a coagulated agent and then the solid coagulum is separated and neutralized to li... | 02/09/1988 |
| 4681682 | Air flotation clarifier A clarifier is provided with an elongated settling tank having an inlet at one end, an outlet at the opposite end, a generator producing air saturated liquid released near the inlet end of the tank to float lighter sludge to the top of the tank, suction h... | 07/21/1987 |
| 4620980 | Process for the continuous clarification of fresh fruit juice This invention relates to a process for the clarification of juices and other similar beverages such as wine, beer, cider, etc. . . . which comprises a flotation stage. All known clarification processes used in the commercial production of beverages are d... | 11/04/1986 |
| 4439290 | Process for the separation of oil-in-water emulsions by electrolysis Process for the continuous separation of oil-in-water emulsions, which may contain surfactants, for example oil- and surfactant-containing effluents, by electrolysis, which comprises electrolysing such emulsions at a pH value of 5 to 10 and under a potent... | 03/27/1984 |
| 4417985 | Treatment of waters with broad spectrum contaminants Industrial waters containing dissolved or suspended contaminants are treated by turbulently mixing the contaminated water with a composition comprising a discontinuous phase of gas in the form of spherical bubbles having a narrowly distributed size of at ... | 11/29/1983 |
| 4267050 | High solubility gas flotation in liquid-solid separation BOD-containing water is purified by oxygenation. The resulting sludge is subjected to flotation with a gas having a solubility in water higher than that of air. The preferred source of high solubility gas is the vent gas from the oxygenation zone or stack... | 05/12/1981 |
| 4219416 | Process for recovering molybdenum and tungsten from mining wastewater A process for removal of heavy metals in their anionic state, particularly tungsten and molybdenum, from industrial mining wastewater by chemical precipitation of the heavy metal values, followed by gas flotation.... | 08/26/1980 |
| 4219417 | Wastewater flotation utilizing streaming potential adjustment A flow of wastewater is adjusted to near zero streaming potential by injecting a non-coagulant mineral acid or base into the wastewater. The potential is measured in streaming detector units. The thus adjusted flow enters a basin where it is subjected to ... | 08/26/1980 |
| 4214987 | Two stage wastewater flotation In a first stage, a flow of wastewater is adjusted to near zero streaming potential by injecting a mineral acid into the wastewater. The thus adjusted flow enters a basin where it is subjected to a decreasing gradient of small bubbles to form and separate... | 07/29/1980 |
| 4194972 | Method for breaking an oil-in-water emulsion A method is disclosed for breaking an oil-in-water emulsion. Briefly, the method of this invention includes the following general steps. A porous ferrous ion producing anode is established. A supply of the oil-in-water emulsion is located on one side of t... | 03/25/1980 |
| 4179347 | System for electrocatalytic treatment of waste water streams A continuous system for disinfecting waste water streams, such as sewage and streams containing organic matter and removing suspended solids therefrom is disclosed. A waste water stream is passed into an electrolytic cell open to the atmosphere and betwee... | 12/18/1979 |
| 4101409 | Electrolytic flotation apparatus A method for treating a liquid wherein the liquid to be treated is caused to flow through a tank equipped with at least one electrode assembly in the base thereof for the generation of gas bubbles by electrolytic action, whereby suspended materials, usual... | 07/18/1978 |
| 4071447 | Dewatering of wastewater treatment wastes Wastewater treatment wastes, such as skimmings or sludges, are processed so as to reduce the water content by approximately two thirds and increase the impurities content thereof. The wastes are passed over a dense supply of very fine bubbles. These fine ... | 01/31/1978 |
| 4031006 | Vortex coagulation means and method for wastewater clarification Raw wastewater to be clarified is routed in an apparatus which directs the wastewater in an improved upwardly directed vortex path that is above and open to a source of dense microbubbles. Impurities within the wastewater are urged toward the periphery of... | 06/21/1977 |
