Diverse Patents (Class 210/259)
  • Patent number: 6428697
    Abstract: Methods comprise processing wastewater to produce useful products. Preferably wastewater is ash leachate from landfills which is processed using magnetohydrodynamic treatment followed by electrolytic cell treatment to produce sodium hypochlorite. Methods further comprise removal of hazardous substances from wastewater for subsequent storage and processing of wastewater.
    Type: Grant
    Filed: June 23, 2000
    Date of Patent: August 6, 2002
    Inventor: William W. Edgar
  • Patent number: 6428691
    Abstract: The present invention relates to a compact, environmentally benign onsite waste water treatment and disposal system installed secondary to conventional primary treatment process. It is a method and apparatus for the biological purification and natural disposal of liquid wastes using a secondary single pass trickling filter in conjunction with an evapotranspiration absorption (ETA) tertiary disposal bed.
    Type: Grant
    Filed: November 6, 2000
    Date of Patent: August 6, 2002
    Inventor: Charles Wofford
  • Publication number: 20020103453
    Abstract: A first flow path is defined within a first panel that forms a part of an extracorporeal fluid circuit. A second flow path is defined within a second panel that also forms a part of the extracorporeal fluid circuit. The first and second panels are oriented in a fluid processing cartridge for mounting as an integrated unit on a fluid processing machine and for removal as an integrated unit from the fluid processing machine.
    Type: Application
    Filed: May 24, 2001
    Publication date: August 1, 2002
    Applicant: NxStage Medical, Inc.
    Inventors: Jeffrey H. Burbank, James M. Brugger, Dennis M. Treu
  • Publication number: 20020096456
    Abstract: Provided is a wastewater treatment system comprising a cavitation reactor including an inlet into which wastewater is introduced, a main body in which a cavitation reaction occurs to treat the water, and an outlet from which the treated water is discharged. The main body comprises a nozzle for ejecting the introduced water and a target with which the jetted water collide.
    Type: Application
    Filed: November 12, 2001
    Publication date: July 25, 2002
    Inventors: Wan-Mo Kim, Kwan-Mo Kim
  • Patent number: 6419823
    Abstract: An apparatus and methods for sanitizing and cleaning filtration systems is provided. The apparatus includes a chamber fluidly connected to a source of fluid for backwashing the system, and a heat exchanger for increasing the temperature of the fluid. A filter media is positioned within the chamber. The method of sanitization involves backwashing the apparatus to remove debris, then continuing to circulate the backwash fluid through the system while increasing the temperature of the fluid, until the temperature of the water and apparatus is sufficient to deactivate microorganisms. The method may also involve increasing the disinfecting power of the fluid by adjusting the pH of the fluid. The apparatus may be provided with a scavenger to assist in the substantially complete removal of fluid from the chamber during and after a steaming or cleaning process.
    Type: Grant
    Filed: August 22, 2001
    Date of Patent: July 16, 2002
    Assignee: United States Filter Corporation
    Inventors: Harry C. DeLonge, Michael G. Costello, Karen L. Asher
  • Patent number: 6395181
    Abstract: Wastewater can be treated using a combination of a settleable solids separator, such as a vortex separator and a membrane separation system. Removal and segregation of materials that adversely affect operation of the membrane separator earlier in the treatment process can improve water throughput, water quality and the lifespan of system components. Physical separation of settleable solids and floatable materials from the wastewater prior to treatment with a membrane separator can allow higher flow rates to be achieved.
    Type: Grant
    Filed: October 4, 2000
    Date of Patent: May 28, 2002
    Assignee: Great Circle Technologies, Inc.
    Inventor: Steven B. Mullerheim
  • Publication number: 20020060186
    Abstract: A solvent separator includes an introduction member which introduces a mixture including chlorine containing organic solvent and water; a separation unit including a separation member made of a water-repellent and/or lipophilic porous material, which carries out the separation of the mixture; a water drainage member through which water separated by the separation unit is discharged; and a solvent drainage member through which the chlorine containing organic solvent separated by the separation unit is discharged. Also, a method and a device for treating waste liquid are provided by which chlorine containing organic solvent present in waste liquid is selectively separated, decomposed by a photocatalyst, and converted into a harmless substrate.
    Type: Application
    Filed: October 2, 2001
    Publication date: May 23, 2002
    Applicant: Yamaha Corporation
    Inventors: Kunimasa Muroi, Yoichi Nagasaki, Akira Ohsawa, Go Ito, Jun Yamamoto
  • Patent number: 6391198
    Abstract: An oil-water and oil emulsion separation system using a plurality of transport vessels as the separation tanks. The containers or tanks are arranged in series with sludge or oil removed first and thereafter remaining oil is removed and finally a relatively pure aqueous solution is returned to the system. The unit is useful with parts washers or any apparatus with which water is contaminated by free oil or sludge. A floating skimmer is placed in the user's sump and a vacuum draws this into a series of containers in which it is processed and in which sludge and oil are successively separated. A positive displacement pump is used. A manifold having vacuum relief valves for at least one container is also provided. In one embodiment, flow restrictors are placed in at least one manifold.
    Type: Grant
    Filed: June 22, 2001
    Date of Patent: May 21, 2002
    Assignee: Safety-Kleen Systems, Inc.
    Inventors: Brian E. Porter, William J. Shortreed
  • Publication number: 20020056690
    Abstract: An apparatus and method are disclosed for washing manure to remove undesirable elements and produce environmentally desirable processed manure solids and a manure tea by-product. The apparatus is arranged so that the manure, which is transformed into a slurry, passes through the apparatus vertically by gravity during the washing process. The process includes the addition of most preferably nitric acid or alternatively iron salts; and a polymer.
    Type: Application
    Filed: September 18, 2001
    Publication date: May 16, 2002
    Inventor: Paul Wegner
  • Patent number: 6387281
    Abstract: There is disclosed a process for treating sewage or similar organic sludge to produce a pasteurized and dried product comprising the steps of: dividing the sludge into at least one first portion and at least one second portion; drying the first portion so that the first portion has a higher dry solids content than that of the second portion; mixing the fist portion and the second portion to produce a mixture having a dry solids content which is intermediate between that of the first and second portions; adding an alkaline admixture to the mixture in order to pasteurize the mixture and thereby produce the product without employing subsequent drying by aeration.
    Type: Grant
    Filed: March 23, 2001
    Date of Patent: May 14, 2002
    Assignee: R3 Management Limited
    Inventors: Robin Millard, Frederick H. Kurtz
  • Patent number: 6379539
    Abstract: A point of entry water treatment system. Components mounted on a base frame are interconnected and provide a system and method for treating freshwater, including from a lake, river, well or cistern, to provide potable water. A pre-filter removes sediment and reduces turbidity, followed by chlorine disinfection of the water. Finally, the water passes through an activated carbon filter to remove remaining free disinfectant and by-products resulting from the application of the disinfectant. Controls are provided that prevent untreated water or raw disinfectant from being output by the system. The controls also dampen the cycling of the system major components to reduce wear and maintenance.
    Type: Grant
    Filed: March 9, 2000
    Date of Patent: April 30, 2002
    Inventor: Eric Ubelhor
  • Publication number: 20020046969
    Abstract: The present invention relates to a spraying device suitable for spraying cleaning compositions and rinse water onto hard surfaces. More particularly the spraying device may be attached to a hose, for example a conventional garden hose, so that the cleaning composition and rinse water can be applied to outside surfaces, such as vehicles or the outside surface of windows. The spraying device comprises a purifier located inside the cavity of a container and a spray head.
    Type: Application
    Filed: June 6, 2001
    Publication date: April 25, 2002
    Applicant: The Procter & Gamble Company
    Inventors: Eric Richard Bartsch, Henry Cheng Na, John Allen Wooton
  • Publication number: 20020043492
    Abstract: Blood processing systems and methods establish on line communication between a container and a source of blood containing leukocytes and platelets, such as a human donor. The systems and methods create a centrifugal field between the source of blood and the container that separates from the blood an unfinished suspension of platelets having a first physiologic characteristic different than the desired physiologic characteristic. The systems and methods pump the unfinished platelet suspension outside the centrifugal field through a finishing device. The finishing device changes the first physiologic characteristic to the desired physiological characteristic, thereby creating the finished platelet suspension. The systems and methods convey the finished platelet suspension from the finishing device directly into the container. The systems and methods function without interrupting the on line communication between the container and the source of blood.
    Type: Application
    Filed: December 19, 2001
    Publication date: April 18, 2002
    Applicant: Baxter International Inc.
    Inventor: Daniel F. Bischof
  • Publication number: 20020043497
    Abstract: A wastewater absorption field reclamation and maintenance system, wherein effluent (wastewater) is oxygenated such that BOD is not reduced in the effluent, the oxygenated effluent being delivered to the absorption field. As the oxygenated effluent flows to the absorption field, the enhanced oxygen enables aerobic decomposition of organic matter which has reduced the infiltrative capacity of the absorption field.
    Type: Application
    Filed: July 17, 2001
    Publication date: April 18, 2002
    Inventor: Scott D. Wallace
  • Patent number: 6372129
    Abstract: A process and apparatus for effecting the recovery of grease and oils from an aqueous waste stream is disclosed. This is accomplished by a combination of steps which include removing coarse food solids from the waste stream, allowing the oils to separate from the water in a separation zone, removing the oil layer to a storage zone, removing the water layer to a heat recovery zone and transferring heat values from the recovery zone to the separation zone with vapor compression refrigeration. The invention saves energy by recycling the heat of the kitchen waste stream to the separation zone. The recovered oil is useful as a marketable product that can be converted into many useful products. When a fines filter is used in the process, the discharged water can be used for non-agricultural uses such as lawn watering or can be used in water closets and urinals.
    Type: Grant
    Filed: September 5, 2000
    Date of Patent: April 16, 2002
    Inventor: Steven R. Moody
  • Patent number: 6368500
    Abstract: A system for treatment of collected waste comprises a waste receiving pit; at least one first separator for separating between first waste material having a specific gravity equal or less than that of water and second waste material having a specific gravity above that of water; at least one crusher for receiving said first waste material, substantially crushing at least a particulate portion thereof to a smaller particulate form to obtain treated waste material and producing a liquid product comprising water carrying the treated waste material; at least one acetogenic fermentor for receiving said liquid product and for anaerobic acetogenic fermentation thereof to produce a first fermented effluent; at least one methanogenic fermentor for receiving said first fermented effluent and for anaerobic methanogenic fermentation thereof to produce a second fermented effluent; at least one liquid feed line for feeding at least one of said first or said second effluent into one or more of the system's devices for
    Type: Grant
    Filed: June 15, 2000
    Date of Patent: April 9, 2002
    Assignee: Arrow Ecology & Engineering Overseas (1999) Ltd.
    Inventors: Amir Asa, Israel Faig
  • Publication number: 20020038781
    Abstract: A filtration apparatus includes a laundry waste sump, a primary 50 micron static screen filter, a 9,000 gallon equalization tank, at least one secondary media/carbon filter, a sludge holding tank with a pump to return excess water to the equalization tank, a backwash pump, an air blower, and a clear well tank water source for backwash. An exemplary embodiment of the invention also includes a surge tank between the primary and secondary filters and a surge tank between the secondary filter and the clear well tank.
    Type: Application
    Filed: December 7, 2001
    Publication date: April 4, 2002
    Inventor: James P. Sharkey
  • Patent number: 6361695
    Abstract: A method and system for treating wastewater in an onboard ship sewage treatment system having controlled suspended solids, the method comprising the steps of collecting wastewater in a collection tank and transferring the wastewater to a bioreactor to oxidize organic material contained in the wastewater by adding oxygen-containing gas thereto. The bioreactor is operated to provide a mixed liquor having a solids concentration of at least 5 g/l and the solids concentration is continuously increased in the mixed liquor in the bioreactor to not greater than 30 g/l. When the solids concentration in the mixed liquor reaches at least 15 g/l, a portion of the mixed liquor is removed from the bioreactor. Thereafter, wastewater is added to the bioreactor to decrease the solids concentration of remaining or residual mixed liquor to not less than 5 g/l. The bioreactor is further operated to increase the solids content again.
    Type: Grant
    Filed: September 30, 2000
    Date of Patent: March 26, 2002
    Assignee: Zenon Environmental Inc.
    Inventors: Hidayat Husain, Henry Behmann, Fernando A. Tonelli, Ming Gang Liu
  • Publication number: 20020030013
    Abstract: Claimed are a process and an apparatus for extracting a component dissolved in a liquid by means of liquid-liquid extraction using an extraction liquid which is immiscible or only partially miscible with the liquid, in which process the extraction liquid is dispersed in the liquid in a dispersion apparatus and then coalesced in a coalescer, after which the extraction liquid, the specific weight of which differs by at least 5% from the specific weight of the liquid to be extracted in which the component to be extracted is to be found, is separated from the liquid by gravity in a phase separator, in which process in order to obtain an efficiency per extraction stage of at least 0.
    Type: Application
    Filed: January 4, 2001
    Publication date: March 14, 2002
    Inventors: Berthold Berend Breman, Jan Visser
  • Patent number: 6352643
    Abstract: The present invention provides a method and system for the treatment of wastewater. One embodiment includes an anaerobic reactor and aerobic reactor. A terminal settling tank includes an upflow anaerobic reactor comprising an inlet mounted at the external lowest region of the anaerobic reactor. An introducing mechanism is directly connected to the inlet and located at the lower region in the anaerobic reactor and has a perforated drain pipe therein. A mixer is provided at the main shaft. A discharge is provided for allowing reaction water, which contains some portion of sludge generate by the mixer, to flow into the aerobic reactor. A sludge-accumulator is provided for collecting the sludge, which is settled by gravity during the reaction and produced by the mixer, to the center of the anaerobic reactor.
    Type: Grant
    Filed: September 22, 2000
    Date of Patent: March 5, 2002
    Inventors: Joong-Chun Kwon, Hang-Sik Shin, Byung-Uk Bae, Kyu-Seon Yoo
  • Patent number: 6348155
    Abstract: A system and method for purifying water in large quantities for drinking. The system comprises a housing having a water inlet, filtering means connected to the water inlet for filtering sediment and particulate matter from the water, an inlet pump to keep the water flowing through the housing at a predetermined pressure and a mixed bed multimedia unit connected to the filtering means for removing pollutants and controlling organic growth from the water. There is also an ultra-violet treatment means connected to the mixed bed multimedia unit for subjecting the water in the system to ultraviolet radiation and carbon block filtration means disposed for a final filtering prior to dispensing the water at one or more dispensing. There is also a bottle washing means provided within the housing for cleaning water bottles prior to filling with the purified water. The system can supply drinking water for entire communities, yet is portable enough to be easily transported to disaster areas.
    Type: Grant
    Filed: October 30, 1998
    Date of Patent: February 19, 2002
    Assignee: WaterChef, Inc.
    Inventors: David A. Conway, Thomas J. Smith, Peter Sorensen, Sean Doyle
  • Publication number: 20020017491
    Abstract: A multi-stage apparatus and a process for recycling used engine coolant employs a combination of filtration, dissolved air floatation, centrifugation (hydrocyclone separation), semi-permeable nano filtration, reverse osmosis, and continuous deionization for separating ethylene glycol, with or without propylene glycol, and water from used engine coolant. The engine coolant is pre-filtered through a series of filters. The filters remove particulate contaminates. This filtered fluid is then subjected to dissolved air floatation and/or centrifugation to remove organic petroleum contaminants. Then, it is pressurized prior to being passed through semi-permeable nano filtration. The nano filtration separates the feed stream into a ultra filtration solution and a concentrated waste solution. The concentrate solution is returned to a centrifuged coolant tank for continuous circulation through the nano filtration device.
    Type: Application
    Filed: April 27, 2001
    Publication date: February 14, 2002
    Inventor: Marvin E. Haddock
  • Publication number: 20020003112
    Abstract: A method and system for removing heavy metals from wastewaters is provided wherein the wastewaters are pre-treated with a polymeric metal removing agent to assist in the removal of the heavy metals. The polymeric metal removing agent promotes the precipitation of large particles which may then be filtered by a high flow rate, low pressure filtration system.
    Type: Application
    Filed: June 26, 2001
    Publication date: January 10, 2002
    Inventor: Josh H. Golden
  • Publication number: 20020000416
    Abstract: A method and an apparatus for reducing the moisture content bound by capillary action in fiber cells. To include fine material economically and easily in the process, coarse material is sandwiched on top of fine material and then pressed and dried. The material prepared by grinding and screening is transferred as coarse material to a first spreader hopper, and the screened fine material is transferred over a chute and conveyor belt to a second spreader hopper. The fine material is spread in a thin layer through a vertically adjustable gate from the second spreader hopper onto a spreading, loading and filtering belt, and the coarse material is withdrawn on a transfer conveyor belt running below the first spreader hopper and then is spread through a vertically adjustable gate onto the fine layer, to form a sandwich-like mat.
    Type: Application
    Filed: April 9, 2001
    Publication date: January 3, 2002
    Inventor: Friedrich B. Bielfeldt
  • Patent number: 6334941
    Abstract: An apparatus for producing deionized water, which has an ion exchanger accommodated in demineralizing compartments of an electrodialyzer having cation exchange membranes and anion exchange membranes alternately arranged between an anode and a cathode, wherein the ion exchanger is a composite ion exchanger comprising a first porous ion exchanger having a mixture of 60 to 95 wt % of cation exchange resin particles and 5 to 40 wt % of anion exchange resin particles bonded to each other and a second porous ion exchanger having a mixture of 60 to 95 wt % of anion exchange resin particles and 5 to 40 wt % of cation exchange resin particles bonded to each other.
    Type: Grant
    Filed: April 9, 1998
    Date of Patent: January 1, 2002
    Assignee: Asahi Glass Company Ltd.
    Inventor: Junjiro Iwamoto
  • Patent number: 6328884
    Abstract: The invention relates to a device for degerminating and filtering water passing through a sanitary appliance. The device includes a housing through which water can flow, and a filtering device located inside of the housing. The filtering device has a backup cage and a filter cloth bag connected thereto, and essentially surrounds the entire luminous element of a UV lamp. Both the backup cage and the filter cloth bag are made from a plastic material which allows the radiation emitted by the UV lamp to pass through it or which conducts the radiation in the manner of a light conductor.
    Type: Grant
    Filed: May 17, 2000
    Date of Patent: December 11, 2001
    Assignee: Hansa Metallwerke AG
    Inventor: Horst Kunkel
  • Publication number: 20010045391
    Abstract: A method of treating sewage or waste water for removing nitrogen and phosphorus as well as organic materials in the sewage or waste water, and an apparatus therefor are provided. The method applies intermittent aeration and dynamic flow to an equipment having at least a pair of reaction basins with intermittent aeration means, a clarifier with sludge transfer means, and a filter for passing liquid without passing solid between the reaction basins. According to the method, the efficiency of removing nutrient salts is excellent and stable even in the treatment of waste water having low content of influent organisms and low C/N ratio.
    Type: Application
    Filed: April 26, 2001
    Publication date: November 29, 2001
    Inventor: Sang Bae Han
  • Patent number: 6322693
    Abstract: A waste processing system comprising a mixing tank system with an agitation system; a separation system, and a slurry tank system having a shearing system. The present invention also relates to a method of processing waste which includes the steps of: (a) mixing waste with a carrier liquid, b) separating the mixture into at least two portions, the first portion being solid debris and the second portion being processable waste c) shearing and slurrifying the processable waste, and injecting the processed mixture into a wellbore.
    Type: Grant
    Filed: February 18, 1999
    Date of Patent: November 27, 2001
    Assignee: Sun Drilling Products Corporation
    Inventor: Ricky Southall
  • Patent number: 6319417
    Abstract: A filter is provided which uses a particle barrier with its “dirty” side flow path connected in series with a centrifuge. The “dirty” side flow path has an inlet and an outlet for delivering fluid with particles suspended therein under pressure against the “dirty” surface of the particle barrier. The barrier has a plurality of fluid passages through it which are sized to collect particles suspended in the fluid on the “dirty” surface of the barrier while passing some of the fluid through the barrier. A centrifuge serially connected to the outlet draws fluid containing suspended particles across the “dirty” surface to wash collected particles from the “dirty” surface of the barrier wall.
    Type: Grant
    Filed: March 21, 2000
    Date of Patent: November 20, 2001
    Inventor: Scott A. Rodibaugh
  • Patent number: 6312588
    Abstract: An apparatus for the purification of water contaminated by micro-organisms and chemicals by means of a three stage process is taught. The apparatus consists of a prefiltration stage, an ozonation stage, and a post filtration stage. The contaminated water is initially drawn from a reservoir through a filter through a bed consisting of a porous media, calcium bentonite, zeolite, activated carbon and a second porous media. The filtered water is then passed into a ozonation chamber wherein gaseous ozone is introduced so as to oxidize contaminants. The reduction/oxidation condition in the ozonation chamber serve to control the cycle time. Once the water is disinfected it is passed through a second filter consisting of a porous media and activated carbon before being dispensed into a clean water carafe.
    Type: Grant
    Filed: November 5, 1999
    Date of Patent: November 6, 2001
    Assignee: Fantom Technologies Inc.
    Inventors: Wayne Ernest Conrad, Helmut Gerhard Conrad, Ted Szylowiec, Richard Stanley Phillips
  • Patent number: 6312592
    Abstract: Clarifier for liquids laden with suspended matter, comprising: an outer, first, cylindrical tank (4), a central, second, cylindrical tank (1) for collecting the filtered liquid, roughly coaxial with the first; an intermediate tank (2), formed between the outer tank (4) and the central tank (1) and roughly coaxial therewith; structure (19) for the feed of pressurized backwash liquid to the filter medium (14); a hood (26) for recovering the washing liquid after it has passed through the filter medium (14); a rotary bridge (8) which can rotate above the collection of cylindrical tanks (1, 2, 4), a compartment for introducing the liquid that is to be clarified, this compartment being positioned between the intermediate tank (2) and the central tank (1) and feeding the outer tank (4) centrally with liquid laden with suspended matter, the said compartment being itself fed with liquid that is to be clarified from the outside via a number of inlets (3).
    Type: Grant
    Filed: July 13, 2000
    Date of Patent: November 6, 2001
    Inventor: Roumen Kaltchev
  • Patent number: 6312595
    Abstract: A water filtering system includes a first filtering device connected between an inlet pipe and a fluid volume meter. A second filtering device is connected to the fluid volume meter and has a ceramic tube received therein. A third filtering device is connected to the second filtering device and has activated carbon particles received therein. The third filtering device is connected to a fourth filtering device which has a plurality of units received therein. Each unit has three partitions and two of which receive two magnetic members.
    Type: Grant
    Filed: July 6, 2000
    Date of Patent: November 6, 2001
    Inventor: Kuang-Hui Chien
  • Patent number: 6303025
    Abstract: A water purification system including a rectilinear housing having a plurality of vertical baffles spaced therein. The ends of each of the baffles are located a certain distance below the housing upper edge or above the housing floor to allow for the flow of washwater therethrough from a housing inlet to a housing outlet. A rectilinear array of media, e.g. corrugated plastic, is located between the baffles for harboring bacteria, and an air supply means is provided therebeneath. A feeder mechanism is also provided on an exterior wall of the housing for feeding supplemental bacteria into the housing to make up for bacteria depleted through the operation and use of the system.
    Type: Grant
    Filed: February 17, 2000
    Date of Patent: October 16, 2001
    Inventor: Jon E. Houchens
  • Patent number: 6303024
    Abstract: An electronic controller for controlling the fill, settle and draw operations of three settling tanks which are used with a reverse osmosis unit. The three settling tanks provide a pair of liquid level input signals which indicate the water level within each of the three settling tanks. A bounce eliminator circuit eliminates oscillations from the input signals, providing at its outputs steady state liquid level signals which are active low. The liquid level signals are supplied to a programmable logic device which has a state machine. The state machine sequentially controls the fill, draw and settle operations of the three settling tanks. The programmable logic device provides logic signals which are active low and which activate fill and draw valves associated with each of the three tanks.
    Type: Grant
    Filed: July 18, 2000
    Date of Patent: October 16, 2001
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Roman Kruchowy, Mark C. Miller, Mark A. Silbernagel
  • Patent number: 6287459
    Abstract: A drainwater treatment system positionable within the vertical passageway of a drainage system utilizes a catch basin for accepting drainwater which flows downwardly into the drainage system and a filter-supporting section disposed alongside the catch basin. The filter-supporting section accepts drainwater which flows therein from the catch basin and permits drainwater to flow downwardly therethrough. First and second filters containing a hydrophobic material are positioned within the filter-supporting section for filtering contaminants from the drainwater flowing downwardly therethrough, and an overflow is associated with the catch basin and the filter-supporting section through which drainwater is permitted to exit the treatment system and bypass the first and second filters when the flow rate of drainwater into the system exceeds the rate at which drainwater is permitted to flow downwardly through the first and second filters.
    Type: Grant
    Filed: November 16, 1999
    Date of Patent: September 11, 2001
    Assignee: Remedial Solutions, Inc.
    Inventor: J. Kelly Williamson
  • Patent number: 6280622
    Abstract: A system and method are disclosed for separating particles having different sedimentation velocities. The system includes a container containing a binding substance including first particles and ligands attached to the first particles. When the binding substance is mixed with a liquid carrying at least second and third particles, the ligands bind the first and second particles together to form groups of bound particles. The groups of bound particles are separated from the third particles in a fluid chamber configured to be mounted on a centrifuge rotor. One of the disclosed methods includes forming a saturated fluidized bed of particles to retain the particles groups in the fluid chamber. Another of the disclosed methods includes removing at least some of the first particles after the binding substance is mixed with the liquid carrying second and third particles.
    Type: Grant
    Filed: May 16, 2000
    Date of Patent: August 28, 2001
    Assignee: Gambro, Inc.
    Inventors: Raymond P. Goodrich, Todd Curtis Green
  • Patent number: 6280638
    Abstract: The invention discloses an improved apparatus for continuous purification of liquids, dewatering and drying of the separated non-filtering solids. The apparatus is intended to be applied for the purification of industrial or household waste liquids, as well water form natural sources, by separating and drying of non-filtering solids. The apparatus can be applied successfully for dewatering and drying of various slurries without the emitting of vapours, dust and other detrimental substances in the atmosphere. The apparatus includes a belt filter (1) with an incorporated filter sector and an elastic thermos-filter press (35). The belt filter ensures a continuous purification of water from different sources by separating the non-filtering solids and detrimental ion components comprised in the water, and ensures their bacterial sterility. The separated non-filtering solids are permanently accumulated in the belt filter, and are mixed with the water fed to be purified forming together a slurry.
    Type: Grant
    Filed: August 11, 1999
    Date of Patent: August 28, 2001
    Inventor: Belcho Alexandrov Belchev
  • Patent number: 6274037
    Abstract: A coolant purification system for purifying and removing particles from the coolant used in machining operations. The system uses a rare earth magnetic separator in combination with bag-type filters and deep level filters that are arranged in sequences so that the filters that tend to clog more frequently due to the removal of small particles will not be clogged by particles that are easily removed by coarser filters of this system.
    Type: Grant
    Filed: April 1, 1999
    Date of Patent: August 14, 2001
    Assignee: Yamaha Hatsudoki Kabushiki Kaisha
    Inventor: Kazuaki Mori
  • Patent number: 6270658
    Abstract: To bring maximum sterility in a stationary drinking water supply installation with a water tank, the invention provides a method for filling a drinking water installation in which, after filling a tank with fresh water, the water is circulated at least over a filter. The invention also provides an apparatus for drinking water supply from a drinking water tank with a supply pipe connectable to a fresh water source and which has a three-way valve (6) with an inlet (4) connected to the fresh water intake (3), as well as a second inlet (22) and a supply pipe (5) leading to the tank (2). There is also a return pipe (21) leading from the water tank (2) to the second inlet (22) of the three-way valve (6) and a circulating pump (9) in the water circuit formed by the return pipe (21) and supply pipe (5).
    Type: Grant
    Filed: April 22, 1998
    Date of Patent: August 7, 2001
    Assignee: Digmesa AG
    Inventor: Heinz Plüss
  • Patent number: 6264836
    Abstract: A method and apparatus for decontaminating a fluid, particularly water and wastewater, uses pulsed ultraviolet (UV) light in an automatic pump driven configuration that separately and in real time adjusts each UV reactor module for both water flow and UV power (average and peak intensity) to accommodate a wide range of influent conditions, thereby producing the quality of water discharge desired by the operator. Process control is configured on the basis of a UV transmission-based feedback control loop and on a truly active and independent adjustment of each reactor module, as opposed to the relatively passive and dependent adjustment techniques of the prior art.
    Type: Grant
    Filed: January 21, 2000
    Date of Patent: July 24, 2001
    Inventor: Robert M. Lantis
  • Patent number: 6258265
    Abstract: An apparatus and associated methods for purifying water are provided.
    Type: Grant
    Filed: October 15, 1999
    Date of Patent: July 10, 2001
    Inventor: James Phillip Jones
  • Patent number: 6245228
    Abstract: A water treatment device for purifying small quantities of non-potable water for drinking purposes. The device includes: a primary container, a secondary product container, and a cylindrical filter cartridge. The primary container is filled with untreated water, and brought into contact with a disinfecting agent. The filter cartridge is then attached to the primary container and the secondary container is attached to an outlet port of the filter cartridge, the entire arrangement is then inverted to allow water to flow from the primary container into the inlet port of the filter cartridge. A physicochemical time switch is installed near the inlet port of the filter cartridge and blocks the flow of water from the primary container into the filtering elements until an appropriate amount of time has lapsed for the disinfecting agent to effectively disinfect the water. The physicochemical time switch is either a water dissolvable barrier or an expandable compartment filled with hydrophilic polymeric crystals.
    Type: Grant
    Filed: February 28, 2000
    Date of Patent: June 12, 2001
    Inventor: Maher I. Kelada
  • Patent number: 6245226
    Abstract: A pretreatment system and a pretreatment method for recycling exhaust water, for purifying exhaust water to a water quality acceptable to ordinary water-purification equipment, has advantages of small space occupation, low energy consumption, and lower cost. By providing a mixing piping with coarse interior, a series of closed micro continuous stirred tank reactors can be established inside the pipe to form plenty of turbulent regions for thoroughly mixing the chemical and the exhaust water. Flocculent gels that carry pollutants and particles of the exhaust water then can be removed by a filtering unit, for purifying the exhaust water. Also, by providing a modified silt density index, the pollution of a sample water can be clearly scaled and monitored.
    Type: Grant
    Filed: July 1, 1999
    Date of Patent: June 12, 2001
    Assignee: Industrial Technology Research Institute
    Inventors: Chen-Chang Chang, Shih-Cheng Lin, Hsing-Fen Tsai
  • Patent number: 6228258
    Abstract: The Sewage Treatment System with Chlorinator (“STSC”) processes sewage for buildings not connected to a municipal sewer system. It employs a two stage process for cleaning sewage in a single, light-weight, easy-to-install unit. Sewage is initially cleaned in the aerobic tank, which is divided into an inner chamber and an outer chamber by a funnel-shaped clarifier hanging down in the aerobic tank, with the opening in the bottom of the clarifier held above the bottom of the aerobic tank. Air droplines hang down in the outer chamber of the aerobic tank, so that sewage in the outer chamber is aerated, stimulating aerobic microorganisms which digest the sewage. The sewage in the outer chamber then moves into the inner chamber inside the clarifier where gravity separates solids from the effluent. This cleaned effluent is then drained to the post-treatment tank for the second cleaning stage, where it is chlorinated and stored for discharge.
    Type: Grant
    Filed: July 23, 1999
    Date of Patent: May 8, 2001
    Inventors: Hubbard H. Donald, George E. Johnson
  • Patent number: 6224752
    Abstract: A wastewater treatment system having an aeration tank (20) is provided with an operations control center (12) that includes a controller (64) and an aerator pump (50) mounted atop a base (58), which is in turn mounted atop a platform (56). A plurality of electrical lines (66) extend from the controller through respective conduits (90, 92, 94, 96). The conduits extend through and are sealingly engaged by holes in the base and the platform. A compression fitting (136) and coupler (154) are included to provide a fluid-tight seal. This arrangement is advantageous because it prevents corrosive gases from entering the operations control center and corroding the terminals thereof. Also described is a wastewater treatment system that includes a pretreatment tank (244), an aeration tank (20), and a pump tank (202) secured together by a connector that includes bands (260, 262) and spacing means (264, 268) for maintaining a fixed-spaced relationship between the tanks.
    Type: Grant
    Filed: April 23, 1999
    Date of Patent: May 1, 2001
    Assignee: Aqua Partners, Ltd.
    Inventor: T. Gig Drewery
  • Patent number: 6200472
    Abstract: The Three Stage Sewage Treatment System (“TSSTS”) processes sewage for buildings not connected to a municipal sewer system. It employs a three stage process for cleaning sewage in a single, light-weight, easy-to-install unit. Sewage is initially cleaned anaerobically in the pre-treatment tank as gravity acts to separate solids from the effluent. Sewage then flows into the aerobic tank for further cleaning by aerobic microorganisms and continued gravity separation of solid contaminants from the effluent. The aerobic tank is divided into an inner chamber and an outer chamber by a funnel-shaped clarifier. In the TSSTS, the clarifier is a separate piece with a lip around the top of the funnel-shaped main body. The lip of the clarifier rests atop the sidewalls of the aerobic tank, and the clarifier hangs down in the aerobic tank, with an opening in the bottom of the clarifier held above the bottom of the aerobic tank.
    Type: Grant
    Filed: March 30, 1999
    Date of Patent: March 13, 2001
    Inventors: Hubbard H. Donald, George E. Johnson
  • Patent number: 6197188
    Abstract: A filtration system for concentrating radioactive debris particulate provides efficient filtration, concentration and transport to collection canisters of radioactive particles from a refueling cavity, spent fuel pool, or other water volume where small particles must be removed from the water. The system includes a flushing pump module that draws contaminated water from a cut zone enclosure. The flushing pump module has a separator that removes large size particulate from the contaminated water. A solid media filter module receives the contaminated water from the flushing pump module and removes medium size particulate from the contaminated water. The solid media filter module has a structure for ejecting the medium size particulate and passing the ejected particulate to a concentrate handling module having a purge tank and a slurry transfer pump. A disposal canister station receives the medium size particulate from the slurry transfer pump and fills disposal canisters for transport and storage.
    Type: Grant
    Filed: March 10, 1999
    Date of Patent: March 6, 2001
    Assignee: GE Nuclear Power LLC
    Inventor: Edward F. Lamoureux
  • Patent number: 6193895
    Abstract: A multipurpose vehicle coolant recycling device is described. The multipurpose vehicle coolant recycling device includes a pump for pumping coolant through said recycling device, a processing tank for receiving used coolant, a fresh coolant tank for receiving fresh coolant, a filter for removing particulates from coolant, a coolant outlet hose constructed for attachment to a cooling system of a motor vehicle, a coolant inlet hose constructed for attachment to a cooling system of a motor vehicle, and a plurality of control valves for directing flow of coolant through the recycling device. The plurality of control valves are adjustable between a first configuration, a second configuration, a third configuration, and a fourth configuration. The first configuration is constructed for directing coolant from the fresh coolant tank through the pump and through the coolant outlet hose, and directing coolant from a cooling system of a motor vehicle through the coolant inlet hose and into the processing tank.
    Type: Grant
    Filed: August 31, 1999
    Date of Patent: February 27, 2001
    Assignee: Century Mfg. Co.
    Inventors: William S. Dea, Todd Moore
  • Patent number: 6190545
    Abstract: A drainwater treatment system positionable within a horizontal flow passage of a drainage system utilizes a partition which divides the flow passage into an upstream chamber and a downstream chamber. In addition, a mid-panel is supported within the upstream chamber for dividing the interior of the upstream chamber into an upper section and a lower section so that the drainwater enters the upper section before entering the lower section through a first opening provided in the mid-panel. A conduit is also joined between a second opening provided in the mid-panel and the opening of the partition for conducting drainwater from the lower section of the upstream chamber to the downstream chamber so that the drainwater which enters the upper section and then into the lower section is decelerated to flow conditions at which debris and suspended are permitted to separate and settle from the drainwater before being conducted from the lower section and into the downstream chamber through the conduit.
    Type: Grant
    Filed: November 16, 1999
    Date of Patent: February 20, 2001
    Assignee: Remedial Solutions, Inc.
    Inventor: J. Kelly Williamson
  • Patent number: 6187190
    Abstract: The present invention relates generally to an apparatus and method for separating high molecular weight molecules from low molecular weight molecules. More specifically, the invention relates to the use of microdialysis for removal of the salt (low molecular weight molecules) from a nucleotide sample (high molecular weight molecules) for ESI-MS analysis. The dialysis or separation performance of the present invention is improved by (1) increasing dialysis temperature thereby increasing desalting efficiency and improving spectrum quality; (2) adding piperidine and imidazole to the dialysis buffer solution and reducing charge states and further increasing detection sensitivity for DNA; (3) using low concentrations (0-2.5 mM NH4OAc) of dialysis buffer and shifting the DNA negative ions to higher charge states, producing a nearly 10-fold increase in detection sensitivity and a slightly decreased desalting efficiency, (4) conducting a two-stage separation or (5) any combination of (1), (2), (3) and (4).
    Type: Grant
    Filed: December 30, 1999
    Date of Patent: February 13, 2001
    Assignee: Battelle Memorial Institute
    Inventors: Richard D. Smith, Chuanliang Liu