Utilizing Contact Surfaces Supporting Microorganism (e.g., Trickling Filter, Etc.) Patents (Class 210/615)
  • Patent number: 8382984
    Abstract: The invention relates to a method for biologically treating waste water, using a set of micro-organisms having different metabolic spectra, in order to eliminate carbon and nitrogen, even phosphorus. Some of the micro-organisms are fixed to mobile solid carriers (2) and form a fluidised fixed biomass. Some of the micro-organisms are free to be used in an activated mud treatment. To this end, a first non-aerated treatment zone (21a) is followed by a second aerated treatment zone (21b); the treated effluent is subjected to a solid/liquid separation by flotation (6) at a speed higher than 10 m/H; and part of the mud recovered by flotation is recirculated (8) towards the activated mud treatment, said recirculation being controlled (9, 10, 11) so that the MES concentration of the effluent subjected to the liquid/solid separation remains compatible with the retained flotation.
    Type: Grant
    Filed: July 25, 2008
    Date of Patent: February 26, 2013
    Assignee: Degremont
    Inventor: Laure Graveleau
  • Patent number: 8382985
    Abstract: An apparatus, system, and process for wastewater treatment. The apparatus can include a basin for receiving a liquid to be treated, the liquid having a direction of flow, and a plurality of pendant sheets for supporting the growth of microorganisms, disposed within the basin and in contact with the liquid, wherein the pendant sheets are oriented parallel to the direction of flow of the liquid.
    Type: Grant
    Filed: April 2, 2012
    Date of Patent: February 26, 2013
    Inventor: Corwyn Oldfield
  • Patent number: 8372277
    Abstract: A floating streambed comprising a circulation pump having an inlet hose or pipe, an inlet hose or pipe depth adjuster, and one or more treatment channels comprised of permeable matrix. The floating streambed floats on a water body. Water enters the inlet hose or pipe from the water body and is pumped by the circulation pump into the treatment channels. The treatment channels are comprised of permeable matrix, and water entering the treatment channels flows both horizontally through the treatment channel and into the water body and also vertically downward through the permeable matrix of the treatment channels.
    Type: Grant
    Filed: November 5, 2010
    Date of Patent: February 12, 2013
    Assignee: Fountainhead L.L.C.
    Inventors: Bruce G. Kania, Frank M. Stewart
  • Publication number: 20130032532
    Abstract: A water treatment method and a method for producing ultrapure water are provided in which urea in raw water is sufficiently decomposed, and an organism (bacterial cells) in biological treatment is prevented from flowing downstream. In a water treatment method for performing biological treatment of raw water containing urea, a carbon source is added to the raw water, and the raw water is then supplied to biological treatment means 1 and 2 having a fixed bed formed of an organism-supporting carrier to perform the biological treatment. The biological treatment after the addition of the carbon source to the raw water improves the efficiency of decomposition and removal of urea. The biological treatment means using a fixed bed formed of an organism-supporting carrier decreases the number of bacterial cells flowing downstream.
    Type: Application
    Filed: February 28, 2011
    Publication date: February 7, 2013
    Applicant: Kurita Water Industries, Ltd.
    Inventors: Nobukazu Arai, Nozomu Ikuno
  • Publication number: 20130032533
    Abstract: Integrated membrane treatment systems for treatment of an aqueous solution. In embodiments, components, such as an MBR, are integrated with means to recover energy from the system, for example from an RO concentrate, to operate the other components. In embodiments including biological treatment, RO is integrated with other components, such as an MBR with the ROs ability to remove inorganic nitrogen enabling biological treatment to be performed with only partial nitrification and the MBR operated without active pH control. In embodiments, RO is integrated with a chlorine generator to convert chlorides present in the RO concentrate for an in-situ source of oxidizing biocides for disinfection purposes. Chloramines may be generated in-situ from residual ammonia and chlorides in the RO reject. In embodiments, carrier media is employed in a membrane tank to enhance removal of residual organics by the MBR and to also improve effectiveness of membrane scouring.
    Type: Application
    Filed: August 1, 2011
    Publication date: February 7, 2013
    Inventors: Vyacheslav Libman, Boris Eliosov
  • Publication number: 20130001161
    Abstract: A filter media supporting the biological treatment and filtering of fluids and the method thereof.
    Type: Application
    Filed: June 27, 2012
    Publication date: January 3, 2013
    Inventor: Mark Boner
  • Publication number: 20120325740
    Abstract: This disclosure relates generally to methods, apparatuses, and cellular compositions and cellular products for purifying environmental liquids, such as wastewater and brine, using halophilic bacteria that produce, or can be made to produce, siderophore metal chelators.
    Type: Application
    Filed: February 14, 2011
    Publication date: December 27, 2012
    Inventor: Ezekiel Kruglick
  • Publication number: 20120312744
    Abstract: A filtration device for an aquarium comprising a filtering chamber for receiving water and a filter medium therein wherein said filter medium comprises fibers having a diameter from 0.1 nm to 3000 nm and an aspect ratio of length to diameter of 5:1 to 10,000 to 1 wherein said fibers provide for colonization of nitrosomonas bacterium and/or nitrobacteria.
    Type: Application
    Filed: July 11, 2011
    Publication date: December 13, 2012
    Applicant: T.F.H. PUBLICATIONS, INC.
    Inventor: Glen S. AXELROD
  • Publication number: 20120312743
    Abstract: Systems and methods for the bioremediation of soluble sulfates from an environmental effluent, include a first chamber including lactic acid bacteria immobilized on a first matrix and a second chamber including sulfate-reducing bacteria immobilized on a second matrix. The methods include providing the lactic acid bacteria a suitable medium for the production of lactic acid, which is directed to the culture of sulfate-reducing bacteria for use as a substrate/electron donor for the reduction of sulfates present in the environmental effluent.
    Type: Application
    Filed: July 28, 2011
    Publication date: December 13, 2012
    Applicant: West Bengal University of Technology
    Inventors: Shaon Ray Chaudhuri, Ashoke Ranjan Thakur
  • Patent number: 8329035
    Abstract: A system and process for treating an industrial wastewater stream is provided using a membrane biological reactor in which granular activated carbon material is introduced into an aeration portion and maintained upstream of a membrane operating system. The size of the granules of activated carbon is selected so that they can be screened or otherwise readily separated from the mixed liquor stream before the mixed liquor enters the membrane operating system tank(s) containing the submerged membranes, thereby preventing abrasion of the membrane by the carbon granules. The aeration portion includes a waste discharge port whereby a portion of spent granular activated carbon can be removed when the effluent concentration of chemical oxygen demand compounds approaches limits typically set by governmental agencies, and replaced by addition of fresh or regenerated granular activated carbon having greater adsorbent capacity.
    Type: Grant
    Filed: May 24, 2011
    Date of Patent: December 11, 2012
    Assignee: Saudi Arabian Oil Company
    Inventor: William G. Conner
  • Patent number: 8323497
    Abstract: Compositions and methods for the removal of selenium species from water containing high-salt concentrations and/or petroleum contaminants are described. The compositions and methods use a selenium-reducing microorganism adapted to adverse environments.
    Type: Grant
    Filed: September 27, 2010
    Date of Patent: December 4, 2012
    Assignee: Aptwater Inc.
    Inventors: Charles Borg, David Friese, Tyze-Kuan Tim Yin
  • Publication number: 20120273414
    Abstract: A system for treating wastewater including at least one water-treatment pathway having at least one wastewater inlet, at least one oxygen-permeable, water-impermeable wall, separating an interior of the pathway from outside air, and at least one treated wastewater outlet and arranged for at least aerobic treatment of the wastewater as it flows from the at least one wastewater inlet to the at least one treated wastewater outlet, at least one wastewater supply conduit, supplying the wastewater to the at least one wastewater inlet of the water-treatment pathway and at least one treated wastewater conduit, supplying treated wastewater from the at least one treated wastewater outlet of the at least one water-treatment pathway.
    Type: Application
    Filed: December 14, 2010
    Publication date: November 1, 2012
    Applicant: EMEFCY LTD.
    Inventors: Ronen Itzhak Shechter, Lior Eshed, Eytan Baruch Levy, Tamar Ashlagi Amiri
  • Publication number: 20120273412
    Abstract: Technologies are generally described for a treatment system and a method for treating waste product. In some examples, the treatment system may include a container effective to receive a waste product. The treatment system may further include one or more filters in communication with the container. The filter or filters may include a polymer carrier material. The polymer carrier material may include at least one of Sphingomonas bacteria, Flavobacteriales bacteria or Chryseobacterium bacteria.
    Type: Application
    Filed: October 27, 2010
    Publication date: November 1, 2012
    Inventors: Zhengfang Ye, Zhongyou Wang, Mohe Zhang
  • Patent number: 8298425
    Abstract: A methodology, and related systems and structures for accomplishing the methodology, of biological remediation of hazardous or undesirable organic matter, wherein a plurality of carrier members are disposed in a localized retaining member, the carrier members releasing or exposing microorganisms to the undesirable organic matter on a staggered basis over an extended period of time, the microorganisms being capable of biologically remediating the undesirable organic matter by utilizing the organic matter as a food source, thereby converting it into environmentally safe bi-products. Carrier members containing nutrients necessary for the survival of the microorganisms and having release times corresponding to the release times of the microorganisms are also provided to insure that the microorganisms remain viable upon release.
    Type: Grant
    Filed: April 30, 2010
    Date of Patent: October 30, 2012
    Inventor: Mark D. Shaw
  • Patent number: 8298426
    Abstract: A counter current supersaturation oxygenation method includes an apparatus, which includes a down flow tube, an upflow tube and a gas diffuser. The gas diffuser preferably includes a porous tube and a support frame. The porous tube is preferably wrapped in a spiral from a bottom of the support frame to a top of the support frame. A non-porous gas supply hose is connected to the porous tube. The gas diffuser is suspended inside the down flow tube at substantially a bottom thereof. One end of the upflow tube is connected to substantially a bottom of the down flow tube. A second embodiment of the apparatus preferably includes a down flow tube, the gas diffuser and a buoyant platform. A stream of liquid becomes oxygenated by passing down the down flow tube. The oxygenated liquid may flow up the upflow tube or down to any appropriate destination.
    Type: Grant
    Filed: August 30, 2011
    Date of Patent: October 30, 2012
    Inventors: Dean E. Farrell, Ronald W. Ketler
  • Publication number: 20120255901
    Abstract: A device for the treatment of waste material in a waste water collection system includes an inner core and an outer portion partially surrounding the inner core such that at least one surface of the inner core is exposed. The inner core has a greater water solubility than the outer portion.
    Type: Application
    Filed: April 8, 2011
    Publication date: October 11, 2012
    Inventors: Vincent J. Thorgersen, John H. Bacon, Eric D. Frazier
  • Patent number: 8273246
    Abstract: A system for treating ammonia-based wastewater is provided. The system includes a first reactor, including: denitrification bacteria for denitrification; a second reactor disposed on the back of the first reactor, wherein the second reactor includes an aerator and aerobic heterotrophic bacteria, and has an HRT of less than 6 hours; a third reactor disposed on the back of the first reactor, wherein the third reactor contains nitrification bacteria carried on the carriers for improving nitrification; and a solid-liquid-separating reactor disposed on the back of the third for separating the solids and liquids in the effluent of the third reactor.
    Type: Grant
    Filed: June 10, 2009
    Date of Patent: September 25, 2012
    Assignee: Industrial Technology Research Institute
    Inventors: Kuan-Foo Chang, Sheng-Hsin Chang, Shwu-Huey Perng, Wang-Kuan Chang, Huey-Song You, Shan-Shan Chou
  • Publication number: 20120234753
    Abstract: The invention relates to a cooling method and cooling system comprising a cooling device (1), in particular a cooling tower (1), for cooling cooling water and at least one consumer (4) to be cooled, wherein the cooling device (1) and the at least one consumer (4) are arranged in a cooling water circuit (1, 2, 3, 4), a filter (11) having immobilized microorganisms, in particular having a microorganism colony, being arranged in the cooling water circuit (1, 2, 3, 4) between the at least one consumer (4) and the cooling device (1) or in a separate circuit (1, 9, 10, 11, 12) connected thereto, in order to specifically filter out nutrients from the cooling water by means of metabolizing and/or storing the nutrients by the microorganisms in the filter (11), wherein the immobilized microorganisms are inoculated and cultivated outside the circuit with autochthonous and/or allochthonous microorganisms from the cooling system and are integrated into the cooling system as a functionally ready collection of microorganism
    Type: Application
    Filed: April 21, 2011
    Publication date: September 20, 2012
    Inventors: Marc Alexander Flettner, Juergen Scheen
  • Publication number: 20120234752
    Abstract: A method of improving nitrification in a wastewater treatment plant is provided. The method comprises the steps of a) providing a trickling filter effluent water basin having biological filter media placed on a support platform positioned at least three feet above a bottom of the basin; and (b) contacting the filter media with the wastewater. Nitrification (removal of ammonia by conversion to nitrate) can be improved at least 30% as compared to a trickling filter without the invention.
    Type: Application
    Filed: March 14, 2011
    Publication date: September 20, 2012
    Inventor: SCOTT DUNN
  • Publication number: 20120228216
    Abstract: A floating water treatment device for biological treatment of water in a body of water, the device comprising: a submerged biomass-carrying system having at least one biomass-carrying element; a water aeration device adapted to aerate the water in the body of water in the vicinity of the biomass-carrying system; and at least one flotation system, having at least one floating element, the at least one flotation system adapted to float on the surface of the body of water and to support the submerged biomass-carrying system and water aeration device from totally submerging into the body of water.
    Type: Application
    Filed: March 7, 2011
    Publication date: September 13, 2012
    Applicant: J.P. AquaKnit Ltd
    Inventors: Jonah GAVRIELI, Pinhas Hascalovici, Emil Hascalovici
  • Patent number: 8246830
    Abstract: Provided is a biological nitrogen removal method which includes, causing to flow a support having, on the surface portion thereof, a two-layered microbial film which holes, in the outer layer, nitrite type nitrifying bacteria or aerobic bacteria and nitrite type nitrifying bacteria as a dominant species and, in the inner layer, anaerobic ammonia oxidizing bacteria as a dominant species while being surrounded with the nitrite type nitrifying bacteria; and thereby carrying out denitrification of the water to be treated by making use of the anaerobic ammonia oxidation reaction. In the biological nitrogen removal method, a feed rate of the support (total surface area of the support per unit capacity of the reaction tank) is adjusted so that an amount of nitrous acid produced by the nitrite type nitrification reaction through the action of the nitrite type nitrifying bacteria reaches a level to inhibit a nitrate type nitrification reaction.
    Type: Grant
    Filed: June 23, 2011
    Date of Patent: August 21, 2012
    Assignee: Metawater Co., Ltd.
    Inventor: Shigeki Takeda
  • Patent number: 8236174
    Abstract: Disclosed is a system for treating wastewater. The system includes a microorganism clad structure positioned in a body of wastewater such that the microorganism clad structure is at least partially submerged in the body of wastewater. The apparatus also includes an aeration device, such as a propeller-type, surface mounted aeration device, supplying a horizontal flow of oxygenated water to the microorganisms attached to the microorganism clad structure such that the microorganisms may carry out a biological process.
    Type: Grant
    Filed: February 6, 2012
    Date of Patent: August 7, 2012
    Assignee: Aeration Industries International LLC
    Inventors: Daniel Durda, G. Shawn Brown, Cory Mortenson
  • Patent number: 8216477
    Abstract: An apparatus for removing organics from water has an upwardly open and downwardly closed column having a tubular side wall and a floor and a generally closed chamber on the floor of the column and forming with the side wall an upwardly open annular space. The column has an outlet opening into the annular space. A pump forces water containing organics into the chamber and thereby fills the column with water that then flows out of the column through the outlet. An aerator pump moves at least some of the water containing organics out of the chamber, mixes the pumped-out water with bubbles, and pumps the water and bubbles back into a downwardly and horizontally closed but upwardly open flow space in the column above the chamber. A skimmer clears the organics from the surface of the water above the flow space.
    Type: Grant
    Filed: October 20, 2009
    Date of Patent: July 10, 2012
    Assignee: DELTEC GmbH
    Inventor: Wolfgang Weidl
  • Patent number: 8216471
    Abstract: An integrated bioreactor and its applications as well as a method for treatment of highly-concentrated organic wastewater using the same. The integrated bioreactor with a concentric columnar structure includes an inner layer and an outer layer, in which the inner layer is an upflow anaerobic sludge blanket (UASB) and the outer layer is a moving bed biofilm reactor (MBBR). The effluent of the MBBR is recycled into UASB via a reflux pump mounted between a water tank and the integrated bioreactor. A water outlet of the UASB is arranged with an on-line pH monitor and a mechanical agitation device is arranged on the top of a bottom water distributor. The bioreactor is low in cost, features friendly maintenance, stable operation, and high degree of automation, and can be applied under low temperature.
    Type: Grant
    Filed: September 28, 2011
    Date of Patent: July 10, 2012
    Assignee: Nanjing University
    Inventors: Hongqiang Ren, Ke Xu, Lili Ding, Jicheng Xie, Xinkun Ren
  • Patent number: 8211306
    Abstract: A biotrickling filter treatment method includes the steps of: arranging waste tires in an organic treatment area to form at least one waste tire array; forming biological membranes on the waste tire array; and circulating wastewater in the organic treatment area to pass through the waste tire array and ventilating the organic treatment area. The biotrickling filter treatment tank includes an organic treatment area, a waste tire array and a sprayer unit. The waste tire array is formed from a plurality of waste tires on which to form biological membranes and is provided in the organic treatment area. The sprayer unit is aligned with the waste tire array to spray wastewater on the waste tires for wastewater treatment.
    Type: Grant
    Filed: December 9, 2009
    Date of Patent: July 3, 2012
    Inventor: Hsu-Hsien Sun
  • Publication number: 20120160767
    Abstract: In order to provide a means that can process organic wastewater via a membrane-separation activated sludge process that is stable over a long period of time, by reducing the quantity of biological polymers that can cause permeability problems, an additive is provided that is added to the activated sludge when treating organic wastewater via a membrane-separation activated sludge process. Said additive contains microorganisms that decompose polysaccharides.
    Type: Application
    Filed: September 29, 2010
    Publication date: June 28, 2012
    Applicants: National University Corporation Nagoya Institute of Technology, ASAHI KASEI CHEMICALS CORPORATION
    Inventors: Daisuke Okamura, Katsutoshi Hori
  • Publication number: 20120152832
    Abstract: A system and method are provided for removal of undesirable substances from a body of liquid. The system can include an aeration structure having a continuously inclined surface configured to provide an interaction of air bubbles against substantially an entire length of the continuously inclined surface while the air bubbles are moving toward a top of the body of liquid. The continuously inclined surface can be substantially submerged in the body of liquid. A bio-film of diverse bacteria colonies is disposed on the continuously inclined surface, and a high surface area-to-volume structure is located in proximity to the aeration structure, upon which a bio-film of bacteria colonies can be formed.
    Type: Application
    Filed: December 22, 2009
    Publication date: June 21, 2012
    Inventors: Kraig Johnson, Lawrence D. Reaveley, Fred Jaeger, Hua Xu, Robert Okey
  • Publication number: 20120152827
    Abstract: The invention provides a bioretention system comprising one or more chambers and a high flow bypass system with top and bottom weirs for water filtration and storm water flow management. The invention also provides methods that are useful for managing storm water flow and inhibiting the flow of pollutants, debris, and other contaminants into drainage systems.
    Type: Application
    Filed: August 21, 2011
    Publication date: June 21, 2012
    Applicant: Kristar Enterprises, Inc.
    Inventor: Douglas Paul Allard
  • Publication number: 20120132587
    Abstract: Disclosed is a system for treating wastewater. The system includes a microorganism clad structure positioned in a body of wastewater such that the microorganism clad structure is at least partially submerged in the body of wastewater. The apparatus also includes an aeration device, such as a propeller-type, surface mounted aeration device, supplying a horizontal flow of oxygenated water to the microorganisms attached to the microorganism clad structure such that the microorganisms may carry out a biological process.
    Type: Application
    Filed: February 6, 2012
    Publication date: May 31, 2012
    Inventors: Daniel Durda, G. Shawn Brown, Cory Mortenson
  • Publication number: 20120125839
    Abstract: A hollow fiber membrane module, a hollow fiber membrane module unit, and a water treatment method. The module or the module unit enable the efficient contact of microorganisms on the surface of a membrane with a gas. The module and the unit have excellent durability. The hollow fiber membrane module is formed so that the end parts of sheet-form hollow fiber membranes are formed in a substantially rectangular shape and the end face of the anchoring member on a side where the hollow fiber membranes open is formed in a substantially circular shape. The hollow fiber membrane module unit is formed in such a manner that a plurality of modules is disposed. The water treatment method is used to purify treated water with the microorganisms adhered onto the outer surfaces of the hollow fiber membranes by using the module or the unit.
    Type: Application
    Filed: November 10, 2011
    Publication date: May 24, 2012
    Inventors: Kenji WATARI, Satoshi Takeda
  • Publication number: 20120118819
    Abstract: A method for facilitating growth of microbial communities for in-situ bodies of flowing water for the sake of bio-remediating contaminated water and/or producing useful biomass.
    Type: Application
    Filed: November 11, 2010
    Publication date: May 17, 2012
    Inventor: Israel Amichay Bachar
  • Publication number: 20120097608
    Abstract: A wastewater treatment system is provided comprising a biological reactor having a separation subsystem, a suspension system and a membrane operating system. The separation subsystem is constructed and arranged to maintain adsorbent material in the biological reactor with a mixed liquor. The suspension system is positioned in the biological reactor and is constructed and arranged to maintain adsorbent material in suspension with mixed liquor. The membrane operating system is located downstream of the biological reactor and is constructed and arranged to receive treated mixed liquor from the biological reactor and discharge a membrane permeate.
    Type: Application
    Filed: June 15, 2010
    Publication date: April 26, 2012
    Inventors: William G. Conner, Mohammed A. Al-Hajri, Thomas E. Schultz, Michael Howdeshell, Chad L. Felch, Matthew Patterson, Samuel Shafarik, Curt Cooley
  • Patent number: 8163181
    Abstract: A process has steps of one or more of aerobic treatment to remove COD and nitrify a waste stream, anoxic treatment to denitrify a waste stream, anoxic treatment to remove selenium and anaerobic treatment to remove heavy metals and sulphur. The process may be used to treat, for example, FGD blow down water. The process may further include one or more of (a) membrane separation of the waste stream upstream of the anoxic digestion to remove selenium, (b) dilution upstream of the biological treatment step, (c) physical/chemical pretreatment upstream of the biological processes or dilution step to remove TSS and soften the waste stream, or (d) ammonia stripping upstream of the biological treatment steps or dilutions step. These processes may be provided in a variety of suspended growth or fixed film reactors, for example a membrane bioreactor or a fixed film reactor having a GAC bed.
    Type: Grant
    Filed: August 13, 2010
    Date of Patent: April 24, 2012
    Assignee: Zenon Technology Partnership
    Inventors: Jeffrey Gerard Peeters, William A. Bonkoski, Pierre Lucien Cote, Hidayat Husain, Timothy Michael Pickett
  • Patent number: 8163174
    Abstract: A submerged biofiltration purifying apparatus includes a settling zone being a 3D space having open top, bottom, and two lateral sides; one or more filtering zones coupled to the two lateral sides of the settling zone, and each being a 3D space with open sides and having soft contact media connected thereto; and one or more bubble aeration units connected to bottoms of the filtering zones. The soft contact media allow biological films to grow thereon. The bubble aeration units generate air bubbles that guide sewage to flow toward the soft contact media, so that organic substances in the sewage are adsorbed to the biological films. The soft contact media are arranged at a specific angle for the sewage to naturally diffuse toward two lateral sides of the settling zone and recycle. And, purified water settles in the settling zone again to remove remaining suspended solids to achieve sewage purification.
    Type: Grant
    Filed: January 28, 2010
    Date of Patent: April 24, 2012
    Inventor: Jun-Nan Lin
  • Patent number: 8142658
    Abstract: Processes for microbial digestion of organic material, and preparation of substrates for microbial digestion, suitable for the production of biomethane, from municipal and industrial waste water or from municipal or agricultural waste. In addition, a method for identifying a composition of matter that is suitable for microbial digestion, more particularly anaerobic digestion and/or mixed aerobic and anaerobic digestion. Also, a system and process for detoxifying organic wastes, such as those which may be present in waste water from industrial processes.
    Type: Grant
    Filed: May 27, 2009
    Date of Patent: March 27, 2012
    Assignee: 6Solutions, LLC
    Inventor: Cecil T. Massie
  • Publication number: 20120067818
    Abstract: Present invention relates to a method and apparatus for purification of water, said method comprises the steps of feeding the water into a reactor (4) through one or more inlet tubes (1) or inlet zones and feed water an substrate through carrier elements for bio film (5) which have a large protected surface (>200 m2/m3 carrier elements) and large pore volume (>60%), and that the carrier elements are fluidised for the removal of waste sludge, wherein the ratio of charge of the elements (5) by normal duty corresponds to an amount corresponding to 90%-100%, more preferred 92%-100%, and most preferred 92%-99% of the vet volume of the reactor (4), said carrier elements (5) is kept substantially at rest or hindered movement between the times surplus sludge is removed, and that the carrier elements being fluidised for removal of surplus sludge, said carrier elements (5) having a specific gravity in the area of 0.8-1.4, more preferred 0.90-1.1 and most preferred 0.93-0.
    Type: Application
    Filed: June 3, 2010
    Publication date: March 22, 2012
    Inventors: Thorbjorn Westrum, Terje Andersen, Jon G. Siljudalen, Bjorn Rusten
  • Patent number: 8137557
    Abstract: A liquid aeration apparatus includes a vessel having sidewalls, a closed bottom end and, a liquid outlet being provided at or near the upper end. The sidewalls define a cross-sectional interior open area with a vertical depth. An air diffuser is positioned within the interior open area of the vessel. A liquid intake conduit is positioned with an inlet end located at or near the upper end of the vessel and an outlet located near the bottom end of the vessel.
    Type: Grant
    Filed: May 1, 2009
    Date of Patent: March 20, 2012
    Inventor: Richard Ladouceur
  • Publication number: 20120055870
    Abstract: The invention relates to a carrier element for an aerobic biological water treatment system. The carrier element has a first end and a second end at a distance from each other, the maximum diameter of the first end being larger than the maximum diameter of the second end. It also has biofilm growing surface structures that extend from the first end to the second end and from inner part of the element towards periphery of the element and at least two support structures that encircle the growing surface structures at the periphery of the element and connect the growing surface structures to each other. The support structures define the outer boundary surface of the carrier element, whereby the support structures are spaced from each other so that apertures allowing access to the biofilm growing surface structures are formed between the support structures. The invention relates also to a water treatment system employing the carrier elements.
    Type: Application
    Filed: May 14, 2010
    Publication date: March 8, 2012
    Inventors: Petri Pajuniemi, Mikko Siivonen
  • Publication number: 20120055868
    Abstract: Process for the purification of an aqueous stream coming from the Fischer-Tropsch reaction which comprises: —feeding said aqueous stream containing the organic by-products of the reaction to a distillation column, obtaining two output streams: —an aqueous stream (i) exiting from the column head, enriched with alcohols having from 1 to 20 carbon atoms, preferably from 1 to 9 carbon atoms, and other optional volatile compounds; an aqueous stream (ii) exiting from the column bottom, enriched with organic acids having from 1 to 10 carbon atoms, preferably from 2 to 6 carbon atoms; —subjecting said aqueous stream (ii) to an anaerobic biological treatment obtaining a purified aqueous stream (iii); wherein said anaerobic biological treatment is carried out with a hydraulic retention time lower than 15 hours, preferably ranging from 4 hours to 10 hours, more preferably ranging from 5 hours to 8 hours.
    Type: Application
    Filed: February 18, 2010
    Publication date: March 8, 2012
    Applicant: ENI S.p.A.
    Inventors: Giuliana Franzosi, Pietro Cesti, Roberto Paglino, Lino Carnelli, Roberta Miglio
  • Publication number: 20120055869
    Abstract: A screen configuration is provided for the extraction of wastewater from a wastewater reactor, while precluding the entry of biological support media. The screen may be formed as a tubular structure, and may be drum-like or have wings in a T-shaped configuration. A flow modifier within the screen may include one or more tubes extending into the screen and forming annular sections around the tubes. Flow through the screen, then, is directed around the inner flow modifier tubes and through the tubes. The resulting pressures and flow velocities are such that slot velocities through openings in the screen are generally constant along the length of the screen, and the flow is more efficiently distributed. The screen may be reduced in length as compared to conventional wastewater treatment screens.
    Type: Application
    Filed: February 17, 2010
    Publication date: March 8, 2012
    Applicant: Headworks Bio Inc.
    Inventors: Jack Collie Gardiner, Gerald Seidl, Stephen A. Smith
  • Patent number: 8114292
    Abstract: The invention concerns a novel isolated microorganism characterized in that it is capable of: i) transforming Kjeldahl nitrogen, ammonia nitrogen and/or nitrogen oxides into gas nitrogen; and ii) transforming carbonaceous matter into carbon dioxide; both transformation processes being carried out in aerobic condition. The invention also concerns a method for treating wastewater using said microorganism.
    Type: Grant
    Filed: April 20, 2007
    Date of Patent: February 14, 2012
    Assignee: Eco Solution
    Inventor: Alexandre Da Costa
  • Patent number: 8114277
    Abstract: The water to be treated might be river water which needs to be clarified, or might be septic tank effluent which needs to have its BOD and dissolved organics content diminished, and its ammonium oxidized. Treatment is done by passing the water through a block of soft open-cell foam. The block of foam is rectanguloid in its basic form. The block of foam is housed in a watertight box. The rectanguloid form enables minimal hydraulic heads, and is simple and cheap to manufacture and install.
    Type: Grant
    Filed: December 24, 2007
    Date of Patent: February 14, 2012
    Inventor: E. Craig Jowett
  • Patent number: 8110107
    Abstract: The wastewater treatment tank results in high quality effluent meeting what is referred to as “Secondary Treatment Standard. The tank deploys in combination an Facultative Aerobic Bacterial Generators (FABG) that includes a plurality of surrounding horizontally extending bacteria supporting filters disposed in a vertical array along with a second vertical filter media disposed between the FABG and the outlet port. A facultative bacteria generator and additional bacteria supporting filters are also deployed adjacent the FABG and between the second vertical filter media.
    Type: Grant
    Filed: February 20, 2009
    Date of Patent: February 7, 2012
    Inventor: Daniel E. Wickham
  • Patent number: 8110108
    Abstract: Disclosed is a system for treating wastewater. The system includes a microorganism clad structure positioned in a body of wastewater such that the microorganism clad structure is at least partially submerged in the body of wastewater. The apparatus also includes an aeration device, such as a propeller-type, surface mounted aeration device, supplying a horizontal flow of oxygenated water to the microorganisms attached to the microorganism clad structure such that the microorganisms may carry out a biological process.
    Type: Grant
    Filed: January 18, 2011
    Date of Patent: February 7, 2012
    Assignee: Aeration Industries International LLC
    Inventors: Daniel Durda, G. Shawn Brown, Cory Mortenson
  • Patent number: 8092678
    Abstract: A method of wastewater treatment is described. The method includes: (i) receiving wastewater; (ii) performing a first type of treatment on wastewater to produce wastewater having a first property which is capable of changing; (iii) preventing the first property from changing; (iv) performing a second type of treatment on wastewater; and wherein the first property includes at least one property selected from a group consisting of biochemical oxygen demand (“BOD”) level, dissolved oxygen level, solid content and nutrient level.
    Type: Grant
    Filed: July 15, 2008
    Date of Patent: January 10, 2012
    Assignee: Protech Services, Inc.
    Inventor: Christopher Ott
  • Publication number: 20110315628
    Abstract: A dynamic filter member comprising a mass of lipophilic, hydrophobic fibers and bioremediating microbes, said filter member having a sufficient volume of interstitial areas such that water flow through said filter member is substantially unimpeded.
    Type: Application
    Filed: June 23, 2011
    Publication date: December 29, 2011
    Inventors: Mark D. Shaw, J. Tad Heyman
  • Patent number: 8083944
    Abstract: Described herein is a Submerged Attached Growth Reactor (SAGR) which provides nitrification (ammonia removal) from wastewater in cold to moderate climates. The system described herein is novel in that the SAGR reactor includes more than one influent distribution point. Specifically, in addition to the first influent distribution point at the front end of the reactor, there is provided at least one additional distribution point(s) downstream of this first distribution point for introduction of influent into the reactor. As a result of this arrangement, when a second low carbonaceous biochemical oxygen demand (CBOD), high nitrogen influent is distributed into the reactor at a location downstream of the initial influent entry point, a second (or more) population of bacteria (mainly nitrifying bacteria) is established and/or maintained in a physically discrete part of the overall treatment reactor.
    Type: Grant
    Filed: January 19, 2011
    Date of Patent: December 27, 2011
    Assignee: Nelson Environmental Inc
    Inventors: Martin Hildebrand, Merle Kroeker, Byron Heppner
  • Publication number: 20110303605
    Abstract: A method for removing a target compound from a liquid can include arranging two active surfaces so as to be separated by a distance. The active surfaces can be placed within a flow of the liquid and can be capable of supporting an electrical charge, biological growth, and/or enzymes and proteins. The method can further include developing a population of microorganisms concentrated on the active surfaces where the population of microorganisms is configured to or capable of transformation of the target compounds. The method can further include developing enzymes or proteins concentrated on the active surfaces where the enzymes or proteins are configured to or capable of transformation of the target compounds. The method can further include applying a potential difference between the two active surfaces. The microorganisms and the potential difference can be sufficient in combination and/or with specific nutrients to remove the target compound from the liquid and maintain the population of microorganisms.
    Type: Application
    Filed: May 13, 2009
    Publication date: December 15, 2011
    Inventors: Jack Adams, Jan Dean Miller, Nicol Nuku Newton, Madhuri Nanduri, Mike Peoples
  • Patent number: 8070948
    Abstract: A description is given of a sewage treatment plant, in particular a small sewage treatment plant, having at least one activation tank for wastewater and/or having at least one secondary clarification tank for wastewater, wherein the activation tank and/or the secondary clarification tank are charged with shaped bodies which are freely floating in the wastewater, which is distinguished in that it has at least one filtration appliance for wastewater purification, which filtration appliance comprises at least one ceramic-based membrane for separating off microorganisms.
    Type: Grant
    Filed: February 17, 2007
    Date of Patent: December 6, 2011
    Assignee: ItN Nanovation AG
    Inventors: Gerhard Braun, Kay Gunther Gabriel
  • Patent number: 8066879
    Abstract: An apparatus and method for passively generating a current flow in a body of water is disclosed. The passive water circulating apparatus has an aeration plate having a central opening; a plurality of flotation members joined to the aeration plate, the plurality of flotation members being adapted and disposed for maintaining buoyancy of the aeration plate above a water surface; an uplift tube member having a central orifice in fluid communication with the central opening of the aeration plate; a concentrator member disposed at an end of the uplift tube opposite the aeration plate, the concentrator member having a bottom opening in fluid communication with an upper opening, the bottom opening being wider than the upper opening and the upper opening being connected to the uplift tube member; and a plurality of bio-substrates suspended from the concentrator member below the bottom opening, the plurality of bio-substrates providing a substrate for growth of microbes.
    Type: Grant
    Filed: June 17, 2009
    Date of Patent: November 29, 2011
    Assignee: Absolute Aeration
    Inventors: James Rhrodrick Key, Ricky Eugene Roberts, Griscom Bettle, III