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| Number | Title | Issue Date |
| 7442353 | Heat recirculating cooler for fluid stream pollutant removal A process by which heat is removed from a reactant fluid to reach the operating temperature of a known pollutant removal method and said heat is recirculated to raise the temperature of the product fluid. The process can be utilized whenever an intermediate step rea... | 10/28/2008 |
| 7438877 | Fast, high capacity hydrogen sulfide scavengers Selective, irreversible removal of hydrogen sulfide (H2S) and other sulfhydryl compounds from a gas stream, such as sour natural gas and sour hydrocarbon liquids is achieved with a scavenging agent having hydroxyalkyl functionality and alkylamine function... | 10/21/2008 |
| 7438815 | Inhibiting ammonia emissions and odors from animal wastes with oil Lipids, such as plant oils and animal fats, are effective for treatment of animal wastes to inhibit both the emission of ammonia and other odors, and the discharge of particulate matter, microorganisms, and endotoxins, therefrom. Inhibition of ammonia volatilization... | 10/21/2008 |
| 7429329 | Hybrid chemical/mechanical dewatering method for sewage treatment plants A hybrid chemical/mechanical dewatering sewage treatment plant and method employing rapid sludge chemical dewatering technology in conjunction with slower conventional mechanical dewatering solids agglomeration and disposal methods to meet operating constraints and ... | 09/30/2008 |
| 7427357 | Process and apparatus for anaerobic treatment of sulfur compound-containing wastewater An object of the present invention is to provide a process for a high-performance upflow anaerobic sludge treatment (methane fermentation treatment) targeting an organic wastewater containing an inorganic sulfur compound and an apparatus therefor. The invention rela... | 09/23/2008 |
| 7419607 | Anti-biofilm forming structure and method of manufacturing the same A biofilm resistant fluid handling system is provided having at least one structural component adapted to retain or deliver fluid. The at least one structural component is formed from a biofilm resistant material comprising polymeric resin and an inorganic carrier c... | 09/02/2008 |
| 7416668 | Wastewater chemical/biological treatment plant recovery apparatus and method A chemical/biological wastewater treatment plant method and apparatus employing rapid sludge chemical dewatering technology in conjunction with an environmental biological system for treating the separated treated wastewater by land applying it for plant consumption... | 08/26/2008 |
| 7410589 | Hog manure treatment method The invention relates to a method of treating manure such that odor from the manure is significantly reduced or eliminated and producing therefrom recyclable water, value-added biosolids and ammonia. Specifically, the manure is combined with lime at high pH. The mat... | 08/12/2008 |
| 7374682 | Method and apparatus for the methane fermentation treatment of wastewater containing sulfur compound A method and apparatus for the anaerobic methane fermentation treatment of a wastewater containing a sulfur compound. An oxidizing agent is added to an organic wastewater to oxidize the sulfur compound contained therein to molecular sulfur before the anaerobic treat... | 05/20/2008 |
| 7361283 | Extraction and treatment of heavy metals Contaminated waste streams or soil or sludge is subjected to a first treatment stage with an acid liquor at a pH below 2 and at a solids content from 5 to 30%; then the liquid and solid phases from the first treatment stage are separated; the solids from the first t... | 04/22/2008 |
| 7320753 | Anaerobic digester system for animal waste stabilization and biogas recovery An ambient anaerobic digester system for anaerobic digestion of animal waste with biogas production and recovery is provided. The anaerobic digester system includes a substantially flexible bladder for anaerobically digesting the animal waste with biogas production ... | 01/22/2008 |
| 7316782 | Filter apparatus for removing sulfur-containing compounds from liquid fuels, and methods of using same A fuel filter for removing fuel impurities, particularly thiophenes, includes a hollow housing having a filter element therein. The filter element includes a substrate, which may include a nonwoven fiber web, a plurality of particles, or both of these. Where particl... | 01/08/2008 |
| 7300593 | Process for purifying a lipophilic fluid A process for purifying dry cleaning solvents from a mixture containing used dry cleaning solvents and contaminants, such as laundry soils, fabric treating agents. ... | 11/27/2007 |
| 7300594 | Process for purifying a lipophilic fluid by modifying the contaminants A process for purifying a lipophilic fluid employing a functionalized fabric treating agent. The functionalized fabric treating agent is capable of delivering fabric treating benefits in a non-aqueous fabric article treatment process and is designed for easy removal... | 11/27/2007 |
| 7285217 | Removing odoriferous sulfides from wastewater A synergistic composition is provided for controlling odor from waste products. The composition comprises a combination of nitrate salt, sulfide-consuming compound, pH-elevating compound, sulfide-oxidizing, nitrate-reducing bacteria, and sulfide-oxidizing enzyme. Th... | 10/23/2007 |
| 7273561 | Method for determining the chemical dosage required to reduce sulfides in wastewater to acceptable levels An apparatus and method of determining chemical dosage required to reduce sulfides in wastewater includes providing a headspace apart from the wastewater. The temperature of the wastewater and the concentration of sulfide gas in the headspace are measured. Dissolved... | 09/25/2007 |
| 7264648 | Removing siloxanes from a gas using a segmented filtration system customized to the gas composition A plurality of different layers of filter media are used to remove siloxanes from a gas stream. Based on an analysis of the specific gas stream to be filtered, a filter media having an average pore size enabling the preferential removal of a specific class of contam... | 09/04/2007 |
| 7255796 | Method of preventing hydrogen sulfide odor generation in an aqueous medium The present invention relates to a fast acting chemical treatment for preventing the generation of hydrogen sulfide odor by the microbial metabolic activities of sulfate reducing bacteria. Specifically, the invention relates to a method for preventing hydrogen sulfi... | 08/14/2007 |
| 7201847 | Wastewater treatment method utilizing white rot and brown rot fungi A method of treating wastewater sources such as sewer systems or those from pulp and paper mills which contain biomass waste involves adding white rot fungi in the presence of glucose. While glucose may be directly added to the wastewater source, it has been found t... | 04/10/2007 |
| 7186341 | Methods and apparatus for reducing nitrate demands in the reduction of dissolved and/or atmospheric sulfides in wastewater A method and apparatus for treating wastewater streams by adding, either separately or as a mixture, a nitrate containing compound and an alkaline material in an amount sufficient to achieve a lower concentration of atmospheric hydrogen sulfide and dissolved sulfide... | 03/06/2007 |
| 7179389 | Method of using a composition for treatment in a waste treatment or sewage system The use of a composition effective in treatments for a waste treatment or sewage system is provided. The process of preparing such composition includes contacting hydrogen peroxide, glycolic acid, and water. The process can additionally include contacting with one o... | 02/20/2007 |
| 7166227 | Method of treating digested sludge A method of treating, in wastewater purification, sludge containing organic matter, divalent iron and phosphorus, in which the sludge that is treated is made to contain dissolved iron and phosphorus at a molar ratio Fe:P of above 1... | 01/23/2007 |
| 7163629 | System and method for enhanced wastewater treatment Enhanced wastewater treatment utilizing directed energy to promote degradation of sludge is disclosed. The directed energy is delivered in a stream circulating to and from an anaerobic digester. The directed energy incorporates mechanical shear energy, ultrasonic en... | 01/16/2007 |
| 7160712 | Odor control Disclosed herein is a method for treating odors in wastewater treatment bodies. The pH of the body is preferably established above about 6 and most preferably above about 7, usually by adding a base to the body. The oxidation reduction potential of the body is estab... | 01/09/2007 |
| 7140433 | Diamine terminated primary amine-aldehyde sulfur converting compositions and methods for making and using same A new class of sulfur scavenging or converting compositions is disclosed comprising diamine terminated, amine-aldehyde adducts, where the adducts are substantially bimolecular amine-aldehyde adducts and the composition is substantially free of trimer and/or triazine... | 11/28/2006 |
| 7138049 | Apparatus for reducing nitrate demands in the reduction of dissolved and/or atmospheric sulfides in wastewater A method and apparatus for treating wastewater streams by adding, either separately or as a mixture, a nitrate containing compound and an alkaline material in an amount sufficient to achieve a lower concentration of atmospheric hydrogen sulfide and dissolved sulfide... | 11/21/2006 |
| 7115201 | Method of treating mine drainage A method of treating mine drainage water including the step of adding a scale control agent to the mine drainage water and, optionally, adding an oxidizing agent to the mine drainage water and/or precipitating and settling the metals in their hydroxide form from the... | 10/03/2006 |
| 6984324 | Wastewater treatment A method for the treatment of sewage sludge which comprises the step of applying to the sludge a biologically effective amount of a composition which contains a lignosulfonate and sludge digesting microbes, preferably from the genus bacillus. The method may b... | 01/10/2006 |
| 6932909 | Method of treating mine drainage A method of treating mine drainage water including the step of adding a scale control agent to the mine drainage water and, optionally, adding an oxidizing agent to the mine drainage water and/or precipitating and settling the metals in their hydroxide form from the... | 08/23/2005 |
| 6919027 | Method for treating bio-organic and wastewater sludges An improved process of treating sludge to provide a stable product for use as a beneficial soil or fertilizer for agricultural lands which includes the steps of: (a) mixing sludge with at least one alkaline material in an amount sufficient to raise pH of the mixture... | 07/19/2005 |
| 6916426 | Method of waste treatment A method of treating an animal waste slurry so as to efficiently extract nutrients, and which can be performed in a zero-discharge system, comprises flocculating the slurry, processing, e.g. filtering, the flocculated slurry to separate liquid from solid material, d... | 07/12/2005 |
| 6908554 | Organic waste treatment method The present invention is a method of recycling animal waste into a useable soil nutrient. The method involves separating the solid and liquid fraction of an animal waste slurry and separately treating both fractions with effective amounts of activated naturally occu... | 06/21/2005 |
| 6893565 | System and process for treating carbonaceous wastes The present invention is generally directed to a process and system for treating animal waste. More particularly, the present invention is directed to a process and system for treating animal waste effluent with ozone to decompose the organic material within and imp... | 05/17/2005 |
| 6875347 | Fluid treatment system apparatus and method A fluid treatment system for reducing odor, bacteria, and biological oxygen demand from a fluid having at least one tube, a control box, and a pump. The at least one tube has a plurality of conductors in electrical communication with the control box. The control box... | 04/05/2005 |
| 6824691 | Process for treating liquid manure Process for treating liquid manure, comprising the introduction of homogenized liquid manure into a tank, into which are introduced some polymers/copolymers that bring about an interchange to produce the flocculation of colloidal substances and solids in suspension,... | 11/30/2004 |
| 6773604 | Method for reducing hydrogen sulfide emissions from wastewater A cost-effective method for reducing the dissolved sulfide content in a wastewater stream and thereby hydrogen sulfide emissions therefrom involving the steps of adding a transition metal salt to the wastewater stream at the upper reaches of a wastewater collection ... | 08/10/2004 |
| 6773609 | Advanced water treatment system and advanced water treatment method An improved method for water treatment which comprises subjecting a water to be containing a hazardous material such as a dioxin or PCB to an ozone treatment contacting the water with fine bubbles of ozone having an average diameter of 0.5 to 3 microns; and a combin... | 08/10/2004 |
| 6773595 | Compartmentalized facultative lagoon and method of creating and maintaining such a lagoon Compartmentalization of contents of a facultative lagoon into two separate zones improves the economic efficiency of the lagoon for emission control by eliminating macroscopic mixing between the zones, while allowing odor-causing compounds from the anaerobic zone to... | 08/10/2004 |
| 6764600 | Lagoon for hog waste and the method of treatment thereof The present invention relates to a lagoon partitioned for hog waste treatment, and the method of waste treatment in said lagoon. More particularly, the present invention relates to a lagoon for hog waste, which is partitioned into zones separated by walls, comprisin... | 07/20/2004 |
| 6761825 | Method for removing odors in sterilized water The invention herein provides a method of treating water in situ to both sterilize the water and remove unwanted odors and tastes produced during sterilization. The water is preferably intended for drinking. The water is sterilized by a sterilizing treatment such as... | 07/13/2004 |
