Patents Examined by Peter Keyworth
  • Patent number: 11053143
    Abstract: Novel polyaluminum chlorosilicates (PACSi) and sodium aluminum silicate (SAS) products having improved characteristics useful in the treatment of water and wastewater as compared with polyaluminum chlorides (PAC), are provided herein, as well as new processes for their manufacture, and methods of using PACSi as coagulants and flocculants in the treatment of water and/or wastewater.
    Type: Grant
    Filed: February 19, 2016
    Date of Patent: July 6, 2021
    Assignee: USALCO, LLC
    Inventor: James M. Dulko
  • Patent number: 11046598
    Abstract: The present application is relate to a method and system for treating high salinity water, comprising the following steps: step 1, by a first membrane concentration unit, concentrating the raw water; step 2, with the assistance of a crystallization initiation unit, mixing the raw water concentrated, initiating crystallization by a seed crystal, and, discharging precipitated crystals; step 3, with the assistance of a crystallization termination unit, firstly, introducing the resulting water of the crystallization initiation unit, then, terminating crystallization, secondly, discharging precipitated miscellaneous salts; step 4, with the assistance of a mechanical filter unit, the liquid to discharged from the crystallization termination unit flowing through the mechanical filter unit, removing the residual seed crystal and floccules; step 6, with the assistance of a second membrane concentration unit, the concentrated salinity water entering the second membrane concentration unit for concentration.
    Type: Grant
    Filed: August 24, 2020
    Date of Patent: June 29, 2021
    Inventors: Yuebiao Li, Huijie Lin, Hui Li, Guoliang Li, Hongzhi Yan, Changyin Wan, Zhuo Zhang
  • Patent number: 11040902
    Abstract: Methods of employing peroxycarboxylic acid compositions for the prevention of scale formation and in some embodiments the removal of existing scale are disclosed. In particular, the scale inhibition properties of percarboxylic acids of varying chain lengths including C1-C22 provide effective scale inhibition and scale removal or destruction. Methods of employing peroxycarboxylic acid compositions for scale inhibition and/or removal are particularly well suited for treating fluids intended to flow through pipes, namely in the energy industry, water and paper industries, etc. The methods provide suitable scale inhibition replacements and/or additives to known scale inhibitors.
    Type: Grant
    Filed: December 17, 2015
    Date of Patent: June 22, 2021
    Assignee: Ecolab USA Inc.
    Inventors: Ramakrishnan Balasubramanian, Brian Epps, Junzhong Li, Richard Staub, Victor Keasler
  • Patent number: 11039728
    Abstract: A washing appliance includes a treating chamber, a sprayer emitting liquid into the treating chamber, and a recirculation circuit including a centrifugal separator and an electrocoagulation unit both fluidly coupled to the recirculation circuit.
    Type: Grant
    Filed: February 8, 2018
    Date of Patent: June 22, 2021
    Assignee: Whirlpool Corporation
    Inventor: Rodney M. Welch
  • Patent number: 11034597
    Abstract: Described herein is a coagulant blend for use in SAGD water treatment systems. Specifically, a blend of high charge density polyamine and low charge density poly(diallylmethyl ammonium chloride (poly-DADMAC) is used in the warm lime softening treatment process to coagulate and flocculate solids.
    Type: Grant
    Filed: September 19, 2018
    Date of Patent: June 15, 2021
    Inventors: Lee D. Osness, Kevin Lucas, Paul Sameshima, Jason C. Grundler
  • Patent number: 11027995
    Abstract: Methods and systems for treating oil sands tailings streams using multiple dosages of lime are disclosed herein. In some embodiments, the method comprises providing a tailings stream including 3-40% solids by total weight, combining the tailings stream with a first dosage of lime to produce a first mixture having a pH of less than 12.0, and then combining the first mixture with a polymer to produce a second mixture. In some embodiments, the method can further include combining the second mixture with a second dosage of lime to produce a third mixture having a pH greater than 12.0, and dewatering the third mixture in a centrifuge unit and/or a pressure filtration unit to produce a product stream having 55% or more solids by weight.
    Type: Grant
    Filed: November 8, 2018
    Date of Patent: June 8, 2021
    Assignee: Graymont Western Canada Inc
    Inventors: Michael John Tate, Jared Ira Leikam, Jesse Wayne Fox, Nikolas Andrei Romaniuk
  • Patent number: 11027993
    Abstract: Processes of consolidating oil sands tailings which includes fines and process water are disclosed. The processes include mixing the oil sands tailings with a highly water soluble salt or an aqueous solution thereof to destabilize and consolidate solids in the tailings, e.g., to destabilize and consolidate fines in the tailings and separating the consolidated solids from the process water. A water soluble polymer and coarse particles, e.g., sand, can also be used in the treatment of oil sands tailings.
    Type: Grant
    Filed: December 6, 2016
    Date of Patent: June 8, 2021
    Inventors: Paul C. Painter, Bruce G. Miller, Aron Lupinsky
  • Patent number: 11014024
    Abstract: A skimmer for removing water from a sediment basin to a water removal system may include a float portion, and a first pipe having a first end attached to said float portion and in communication with the water removal system. The first pipe has an orifice formed therein to admit water from below a surface of said sediment basin. A guard is attached to said float portion and said first pipe, said guard fixedly positioning said float portion so that said orifice is located below said surface. The guard has a continuous, vertically-extending side wall having a bottom edge defining a water flow path opening located below said orifice. A flow path into said orifice from the sediment basin extends only through said flow path opening, upwardly to said orifice, then downwardly though said orifice into said first pipe.
    Type: Grant
    Filed: May 15, 2019
    Date of Patent: May 25, 2021
    Assignee: SW Feesaver, LLC
    Inventor: James McCutchen
  • Patent number: 10981813
    Abstract: A method for eliminating harmful algal blooms through optimized utilization of a modified clay method includes building a real-time state index and a standardized value grading system for eliminating a site harmful algal bloom or a harmful algal bloom in accordance with the features of monitored harmful algal bloom organisms and modified clay flocculates; acquiring corresponding grade codes of feature index values of the harmful algal bloom in a to-be-treated water body or harmful algal bloom elimination effect through the real-time site state index and the standardized value grading system; comparing the above grade codes with an expert system to obtain an operation solution for eliminating harmful algal blooms through optimized utilization of the modified clay method. The result is tracked and monitored in real time and the operation solution is optimized and adjusted in time according to the harmful algal bloom elimination effect.
    Type: Grant
    Filed: August 22, 2018
    Date of Patent: April 20, 2021
    Inventors: Xihua Cao, Zhiming Yu, Xiuxian Song, Yongquan Yuan, Zaixing Wu, Liyan He
  • Patent number: 10974979
    Abstract: A composition for cleaning water using an electrolytic chlorine generator includes an oxidizer, a pH reducer, a flocculent, a chelator, and a borate compound. A method of cleaning water treated with an electrolytic chlorine generator includes adding, to a body of water treated with an electrolytic chlorine generator, the composition.
    Type: Grant
    Filed: December 23, 2014
    Date of Patent: April 13, 2021
    Inventors: James Stuart, David Stuart
  • Patent number: 10968121
    Abstract: The present invention relates to a process for the treatment of water from the production well of chemical enhanced oil recovery (CEOR) extraction. In particular, the process relates to the treatment of produced water with a combination of reagents to clarify the water, the reagents being selected from (i) a dithiocarbamate polymer which is water-soluble and has a molecular weight of 00 or more and (ii) a metal ion selected from the group comprising a cation of a transition metal, aluminium and lead, and an apparatus therefor. The use of such reagents in the clarification of produced water from polymer flood from chemical enhanced oil recovery is also disclosed.
    Type: Grant
    Filed: June 24, 2016
    Date of Patent: April 6, 2021
    Assignee: ChampionX USA Inc.
    Inventors: William T. Duttlinger, Jr., Brian Scott Caird
  • Patent number: 10960409
    Abstract: A method and apparatus for the recovery of hydrophobic particles from a slurry comprised of water, the hydrophobic particles, and a hydrophilic component. Slurry is exposed to a gas stream to permit bubbles to adhere to the hydrophobic particles. The slurry generally flows vertically through a vessel at a velocity that maintains gas hold-up at least between 30 and 70% to maintain a bubbly flow without a slurry froth interface so that a portion of the water of the slurry, together with entrained gas bubbles attached to hydrophobic particles, flows out of the vessel with a portion of the water of the slurry and the hydrophilic component remaining in the vessel. Water from the slurry and gas bubbles attached to hydrophobic particles flowing through the vessel is discharged and collected for processing. A portion of the hydrophilic component is extracted as tailings for disposal or subsequent processing.
    Type: Grant
    Filed: September 18, 2017
    Date of Patent: March 30, 2021
    Assignee: 2678380 Ontario Inc.
    Inventors: Glenn A. Kosick, Glenn S. Dobby, Catherine A. McInnes
  • Patent number: 10960121
    Abstract: A method of automatically ensuring against chloramine contamination in purified product water includes supplying input water to the system and purifying the water to generate the purified product water. The purifying includes removing chlorine and chloramine contamination from the water using a carbon filter and supplying chlorine-depleted water to a deionization filter, and deionizing the chlorine-depleted water using said deionization filter. The product water is supplied to a sensor for continuous monitoring of the resistivity of the purified product water by the first sensor, and an alarm is generated indicating possible chloramine breakthrough when the resistivity of the product water falls below a predetermined resistivity level, which is selected to provide a reserve filter capacity before breakthrough would occur. The carbon filter is replaced at least responsively to the alarm to ensure excess capacity of said carbon filter sufficient to prevent chloramine breakthrough in said product water.
    Type: Grant
    Filed: March 19, 2018
    Date of Patent: March 30, 2021
    Assignee: NxStage Medical, Inc.
    Inventors: Goetz Friederichs, Dennis M. Treu, Jeffrey H. Burbank, Yuriy N. Tatashin
  • Patent number: 10941351
    Abstract: Provided are a layer-separation method of a spent caustic solution, and a recycling method of an additive, and more particularly, a layer-separation method of a spent caustic solution including: injecting an additive and an acidic compound to the spent caustic solution occurring from a refinery process to break down a red oil emulsion and to perform layer-separation into an upper layer fraction and a lower layer fraction, wherein the additive is an aliphatic hydrocarbon compound having a water solubility of 0.1 to 10 g/L at 20° C.
    Type: Grant
    Filed: October 30, 2017
    Date of Patent: March 9, 2021
    Assignees: SK Innovation Co., Ltd., SK Incheon Petrochem Co., Ltd.
    Inventors: Sung Ho Lee, Dong Hyun Kim, Jae Yang Song, Joong Min Park, Sung Wook Jun
  • Patent number: 10941063
    Abstract: In some embodiments, a method may include treating water comprising sulfur based contaminants. The method may include contacting a portion of water comprising a quantity of hydrogen sulfide with a first oxidant. The method may include producing sulfur solids as a result of contacting the hydrogen sulfide in the portion of water with the first oxidant. In some embodiments, the method may include separating the sulfur solids from the water. The first oxidant may include hydrogen peroxide. In some embodiments, oxidation of contaminated fluids may be accelerated by adding an acid in combination with a second oxidant to the contaminated fluids. In some embodiments, oxidation of contaminated fluids may be accelerated by adjusting a pH of the contaminated fluids after addition of an oxidant to the contaminated fluids. In some embodiments, the pH may be adjusted to less than 7.
    Type: Grant
    Filed: October 29, 2019
    Date of Patent: March 9, 2021
    Assignee: Clean Chemistry, Inc.
    Inventor: Wayne E. Buschmann
  • Patent number: 10934192
    Abstract: The invention relates to a method of removing and/or recovering metals from a dilute metal containing solution. In particular, the invention concerns a method for recovering copper from a dilute copper-iron bearing mining water, particularly from a copper-iron bearing mining wastewater.
    Type: Grant
    Filed: December 19, 2017
    Date of Patent: March 2, 2021
    Assignee: Aalto University Foundation sr
    Inventors: Mari Lundström, Kirsi Yliniemi
  • Patent number: 10927025
    Abstract: A produced water treatment system includes a skim oil unit, a particulate removal unit, a liquid/liquid separation unit, and a flash concentration unit including a burner for providing hot flue gas into a bath vessel. One or more tubes extending into the bath vessel may be fed hot flue gas by the burner and provide a path for the hot flue gas to flow into the bath vessel. The one or more tubes may include a distribution tube comprising a plurality of ports for hot flue gas to exit the flow path into the bath vessel. At least a portion of a flow path for hot flue gas generated by the burner may extend above a waterline of a bath vessel. Portions flanking the portion of the flow path extending above the waterline may be positioned below the waterline to be thereby submerged during operation. The skim oil unit may include a heated dissolved air floatation system. The heat may be provided by the flash concentration unit.
    Type: Grant
    Filed: August 30, 2019
    Date of Patent: February 23, 2021
    Assignee: W-Industries of Louisiana, LLC
    Inventors: Brandon Gaspard, Brennon Vinet
  • Patent number: 10919793
    Abstract: The present invention relates to a filtering device for a water treatment system comprising a biological treatment device adapted to provide a sludge from wastewater or filtrated wastewater, and/or the biological treatment device being fluidic connectable to or in fluidic connection with the filtering device for receiving filtrated wastewater from the filtering device and for delivering sludge to the filtering device. The filtering device is a cake filtration device comprising a fluid penetrable support structure and the support structure is provided as one or more tubular elements having a filtration cake provided on the inside of the fluid penetrable support structure.
    Type: Grant
    Filed: December 29, 2015
    Date of Patent: February 16, 2021
    Assignee: Grundfos Holding A/S
    Inventors: Tom Jæger, Dominik Marek Dominiak, Marcel Gausmann
  • Patent number: 10918779
    Abstract: The present invention relates to removal of protein bound deleterious substances from an extracorporeal biological fluid by changing the affinity of the substance to the protein. The invention relates to the use of displacer substances for removal of deleterious substances. The present invention also relate to a method of removal, a system, a cleaning fluid comprising the displacer substances for removal of deleterious substances.
    Type: Grant
    Filed: October 2, 2018
    Date of Patent: February 16, 2021
    Assignee: Gambro Lundia AB
    Inventors: Torbjorn Linden, Husam Mohammed
  • Patent number: 10919790
    Abstract: A method for removing selenium according to the present invention comprises: a valence change step of adding an oxidant to a wastewater from a facility that gasifies a fuel containing selenium in a reducing atmosphere, and oxidizing the selenium to change the valence of the selenium, and a solid-liquid separation step of adding a flocculant to the wastewater, forming a floc containing the selenium for which the valence has been changed in the valence change step, and subjecting the floc to solid-liquid separation.
    Type: Grant
    Filed: June 28, 2013
    Date of Patent: February 16, 2021
    Inventors: Susumu Okino, Kazuhide Kamimura, Tetsuya Ito, Morikata Nishida, Hiroyuki Nakamura