Did You Know...
...Daniel Webster invented a "bull plow" to pull out tree stumps. It didn't catch on because it was huge and required four oxen to pull it!
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| Number | Title | Issue Date |
| 7431833 | Flowable material vessel A vessel is provided for treating flowable materials and methods of use wherein the vessel has a substantially cardioid cross-sectional configuration with a central cusp defining two upper rounded lobes. A front and rear wall enclose the ends of the sidewall with on... | 10/07/2008 |
| 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 |
| 7326346 | High capacity regenerable sorbent for removal of arsenic and other toxic ions from drinking water The present invention is directed to a sorbent comprising a disordered polyvalent metal oxide on the surface of an inert substrate. The substrate can be a layered silicate, such as vermiculite, an aluminosilicate such as montmorillonite, or a nonlayered silicate suc... | 02/05/2008 |
| 7309423 | Wastewater treatment and dispersal system A wastewater treatment and dispersal system wherein wastewater will stand until it has a BOD of less than about 125 mg/l. The dispersal field may comprise inner and outer conduits, an inner conduit and a permeable outer cover, or a trough and an enclosure. ... | 12/18/2007 |
| 7300577 | Wastewater treatment and dispersal system A wastewater treatment and dispersal system wherein wastewater will stand until it has a BOD of less than about 125 mg/l. The dispersal field may comprise inner and outer conduits, an inner conduit and a permeable outer cover, or a trough and an enclosure. ... | 11/27/2007 |
| 7288191 | Sludge treatment apparatus A sludge treatment method allowing an improvement in a phosphorus recovery rate and sludge volume reduction by efficiently eluting phosphorus in the sludge. The sludge treatment method includes: a step of foaming a sludge-containing liquid by blowing an ozone-contai... | 10/30/2007 |
| 7198715 | Device for separating fluid mixtures A device for separating fluid mixtures, in particular for separating water from oil, includes a vacuum container (10) with several sub-chambers (26, 44, 40). At least one liquid constituent of the fluid mixture can be transported from the vacuum contai... | 04/03/2007 |
| 7186334 | Combined chlorine and ozone generator sterilization system Water sanitizing apparatus is provided for pools, spas hot tubs and other similar bathing facilities that integrates an ozone generator and a chlorine generator in one unit, in addition to exposing a flow of water to be purified to ultraviolet radiation from the ozo... | 03/06/2007 |
| 7186339 | 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 ... | 03/06/2007 |
| 7183235 | High capacity regenerable sorbent for removing arsenic and other toxic ions from drinking water The present invention is directed to a sorbent comprising a disordered polyvalent metal oxide on the surface of an inert substrate. The substrate can be a layered silicate, such as vermiculite, an aluminosilicate such as montmorillonite, or a nonlayered silicate suc... | 02/27/2007 |
| 7160457 | Digester cover An anaerobic digester for use in wastewater treatment systems having a fixed cover including a central tower for controlling gas and foam. A constant operating level is maintained in the digester by utilization of an overflow weir located in the tower. The fixed cov... | 01/09/2007 |
| 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 |
| 7118669 | Wastewater treatment and dispersal system A wastewater treatment and dispersal system wherein wastewater will stand until it has a BOD of less than about 125 mg/l. The dispersal field may comprise inner and outer conduits, an inner conduit and a permeable outer cover, or a trough and an enclosure. ... | 10/10/2006 |
| 7077208 | Method and system for directing fluid flow An apparatus having various conduits moves liquid by passing gas up through it. A collector conduit transports the liquid to the bottom of the unit. A gas-lift conduit mixes the liquid and gas at the bottom and transports the mixture upwards, owing to the rising act... | 07/18/2006 |
| 7048781 | Chemically-impregnated silicate agents for mercury control The present invention is directed to a contaminant removal agent comprising a polyvalent metal sulfide on the surface of an inert substrate. The substrate can be a layered silicate, such as vermiculite, an aluminosilicate such as montmorillonite, or a nonlayered sil... | 05/23/2006 |
| 7032255 | Waste holding tank for a mobile toilet system and mobile toilet system A waste holding tank for a mobile sanitary toilet system includes a base section, a bowl section supported by the base section and a waste holding tank. The tank includes a housing defining a tank interior and a tank exterior. A vent opening is located at a first lo... | 04/25/2006 |
| 7022225 | Water ozonation mixing and degassing system An apparatus and system for mixing and separating ozonated water is provided. The apparatus is especially useful as a component of a system for cycling sanitizing ozonated water to a body of water such as a pool, spa or pond. The apparatus generally includes a separ... | 04/04/2006 |
| 6966993 | Method and plant for thickening sludge derived from water treatment by flocculation-decantation with ballasted floc A method is provided for thickening sludge produced through a ballasted flocculation process. The sludge and granular material from the ballasted flocculation process are directed to a sludge separator where the sludge is separated from the granular material. Therea... | 11/22/2005 |
| 6962654 | Methods and apparatus for supplying high concentrations of dissolved oxygen and ozone for chemical and biological processes A method and apparatus for supplying dissolved gases (such as oxygen, ozone, chlorine etc.) for chemical and biological processes is described. The methods and apparatus described are particularly suitable for use in the biodegradation of organic matter (such as in ... | 11/08/2005 |
| 6942840 | Method for removal and stabilization of mercury in mercury-containing gas streams The present invention is directed to a process and apparatus for removing and stabilizing mercury from mercury-containing gas streams. A gas stream containing vapor phase elemental and/or speciated mercury is contacted with reagent, such as an oxygen-containing oxid... | 09/13/2005 |
| 6929744 | Sludge treatment at a mesophilic temperature A method of treating sewage sludge comprises incubating raw sludge at a temperature in the mesophilic range to reduce the pathogen content of the sludge. ... | 08/16/2005 |
| 6911570 | Method for fixating sludges and soils contaminated with mercury and other heavy metals The invention relates to a method, composition and apparatus for stabilizing mercury and other heavy metals present in a particulate material such that the metals will not leach from the particulate material. The method generally involves the application of a metal ... | 06/28/2005 |
| 6905601 | Method and device for anaerobically fermenting organic material Method for anaerobically fermenting biodegradable organic material, whereby this material is mixed with a quantity of already fermented material as an inoculum for the active anaerobic fermentation and this mixture is introduced at the top into a fermentation chambe... | 06/14/2005 |
| 6902668 | Chemical dispensing apparatus An chemical dispensing apparatus, which has a dispenser head member and a chemical holding container for holding chemical, the dispenser head member having a flow entry means for directing fluid flow into the chemical holding container and a flow exit means for dire... | 06/07/2005 |
| 6881331 | Assembly for purifying water An ozone-based water purification system is disclosed. In this system, a mixing venturi injects ozone and a liquid sanitizer into a stream of water to be treated. Following ozone and sanitizer injection, the stream of water is passed to a contact region where the oz... | 04/19/2005 |
| 6881332 | Sewage treatment apparatus In the present invention, solid contents 38, which are collected by a solid-liquid separation device 33 in a solid-liquid separation tank 14 and charged into a decomposing treatment tank 11, are decomposed to water and CO2 by t... | 04/19/2005 |
| 6875351 | Methods and apparatus for oil demulsification and separation of oil and suspended solids from produced water Methods and apparatus for demulsifying oil in water by dilution and impact, and for separation of the oil and suspended solids by dissolved gas floatation, are described. A produced water treating system is also described. The produced water treating system may incl... | 04/05/2005 |
| 6866788 | Method and device for purifying aqueous effluents by catalytic oxidation The invention concerns a method for purifying aqueous effluents, in particular polluted water, by catalytic oxidation using a three-phase reactor comprising two communicating chambers. The invention is characterised in that it consists in: maintaining the catalyst s... | 03/15/2005 |
| 6866775 | Apparatus for treating metal-working fluid An apparatus for treating metal-working fluid comprises: a heating vessel for receiving and holding metal-working fluid for treatment; a heater for heating the metal-working fluid in the heating vessel; an agitator for agitating the metal-working fluid within the he... | 03/15/2005 |
| 6827820 | Degassing centrifugal apparatus, process for pumping and degassing a fluid and process for producing paper or board The invention relates to a degassing centrifugal apparatus such as a pump and to a process for pumping and degassing a fluid. The apparatus has a rotatable hollow rotor connected to a stationary fluid inlet at one end and a stationary liquid outlet at the opposite e... | 12/07/2004 |
| 6811690 | Method and apparatus for mixing fluids, separating fluids, and separating solids from fluids An apparatus is provided for separation of suspended solid particles from fluids, for separation and mixing of fluids, and for dissolving gases in aqueous fluids. The apparatus employs a grooved ring to divide the fluid stream and impart a high velocity on each of t... | 11/02/2004 |
| 6808637 | System for producing ozone water and control method thereof An ozone water producing system and control method, which is flexibly used indoor or outdoor irrespective condition of a flow channel, is provided for reconstituting polluted water as environmentally friendly. The ozone water generating system is maintained in an op... | 10/26/2004 |
| 6790349 | Mobile apparatus for treatment of wet material A waste treatment apparatus for the treatment and processing of wet material is provided. The apparatus comprises an inlet hopper adapted for receipt of the wet material. A pre-conditioning unit is provided having an input and an output end wherein the wet material ... | 09/14/2004 |
| 6780331 | Ozonation of contaminated liquids under high pressure Contaminated liquids are treated by ozonation in a pressurized environment. Ozone is injected into a contaminated liquid to form a gas/liquid mixture. The mixture is injected into a mixing chamber for providing turbulent gas/liquid contact. The mixture is flowed fro... | 08/24/2004 |
| 6730224 | Advanced aerobic thermophilic methods and systems for treating organic materials An improved method for the aerobic thermophilic treatment of organic material of the type in which air is passed through organic matter contained in a reactor, in which at least a portion of the air that has passed through the organic matter in the reactor being cap... | 05/04/2004 |
| 6716351 | Enhanced biogas production from nitrogen bearing feed stocks A system comprising a first anaerobic digester (12), an ammonia recovery vessel (16) and a second anaerobic digester (14). Microorganisms in the first digester are primarily hydrolyzers and acetogens, while those in the second digester are prima... | 04/06/2004 |
| 6710142 | Method of extracting gaseous fluid There is provided a method for extracting a gaseous fluid which comprises extracting the gaseous fluid through fluid extraction ports set up on the top face portion of a vertical-type agitation tank equipped inside with an agitator, wherein two fluid extraction port... | 03/23/2004 |
| 6669843 | Apparatus for mixing fluids An apparatus is provided for separation of suspended solid particles from fluids, for separation and mixing of fluids, and for dissolving gases in aqueous fluids. The apparatus employs a grooved ring to divide the fluid stream and impart a high velocity o... | 12/30/2003 |
| 6666967 | Defoaming and air-water treating device An object of the present invention is to efficiently remove foam produced in water by the aeration. Further, another object of the present invention is to improve water and air. Said objects can be attained by providing a foam removing apparatus consistin... | 12/23/2003 |
| 6638428 | Method of preventing formation of bubbles during filtration operations Formation of bubbles is prevented during filtration operation by placing an oil on top of a solution-to-be filtered, where the oil is not admixable with the solution and has a lower specific gravity than the solution. The oil seals the solution from air s... | 10/28/2003 |
