Patents Examined by Peter Keyworth
  • Patent number: 10501355
    Abstract: The present application provides a method for treating and recycling organic wastewater, comprising: 1) pretreating the organic wastewater; 2) subjecting an effluent obtained after pretreatment in step 1 to a heterogeneous Fenton reaction with Hangjin clay-supported nano-Fe3O4 as a catalyst, separating the catalyst from a reaction solution after completion of the reaction, and subjecting the reaction solution to a reaction to remove COD; 3) subjecting an effluent obtained in step 2 to an anaerobic ammonia oxidation reaction to denitrify by ammonia nitrogen reacting with nitrite nitrogen; 4) subjecting an effluent obtained in step 3 to an aerobic microbial decomposition and ultrafiltration membrane separation to remove COD and ammonia nitrogen; 5) filtering an effluent obtained in step 4 to remove large particles; 6) supplying an effluent obtained in step 5 to an RO system, and using an effluent from the RO system as circulating cooling water, and subjecting concentrated water from the RO system to a softening
    Type: Grant
    Filed: May 3, 2016
    Date of Patent: December 10, 2019
    Inventors: Shouliang Huo, Jingtian Zhang, Beidou Xi, Li Zhang, Chunzi Ma, Zhuoshi He, Qiuling Dang, Hong Yu
  • Patent number: 10494280
    Abstract: A process is disclosed for treating a Bayer process waste comprising a slurry containing bauxite residue and dissolved aluminum. The process comprises supplying the waste to a settling area to cause the bauxite residue to settle out of the slurry, thereby producing a supernatant liquor. The process further comprises neutralizing the supernatant liquor with a solution containing magnesium and calcium to produce a neutralized slurry containing precipitated hydrotalcites and thickening the neutralized slurry to produce a clarified effluent and a compacted slurry containing the precipitated hydrotalcites, part of said compacted slurry being recirculated to the supernatant liquor to be neutralized and/or directly to the neutralizing step. The clarified effluent and the compacted slurry are disposed of separately. Also disclosed is a plant for treating a Bayer process waste.
    Type: Grant
    Filed: October 21, 2013
    Date of Patent: December 3, 2019
    Assignee: Rio Tinto Alcan International Limited
    Inventors: John Victor Anderson, Jean-Marc Rousseaux, Guy Peloquin, Ben O'Brien
  • Patent number: 10479715
    Abstract: The present invention relates to an improved process for treating high sulphate waters. In particular, the present invention relates to an improved process by which ettringite is used to treat high sulphate waste waters by controlled precipitation of sulphate and metal ions.
    Type: Grant
    Filed: April 20, 2015
    Date of Patent: November 19, 2019
    Inventor: Richard George Paxton
  • Patent number: 10472263
    Abstract: Some embodiments provide a chemical balancing system for a pool that includes a salt chlorine generator system. The salt chlorine generator system produces chlorine through an electrolytic process at a salt chlorine generator cell in communication with a flow of water from the pool. A pH monitoring and balancing unit is coupled to the salt chlorine generator system. A power cord connects a power supply to the salt chlorine generator. A controller is in communication with both the salt chlorine generator system and the pH monitoring and balancing unit. The controller is configured to estimate a current pH value of the pool, determine how much pH balancing solution is required to re-balance the pool to a desired pH level, and dispense pH balancing solution until the pH level in the pool reaches the desired pH level.
    Type: Grant
    Filed: August 16, 2016
    Date of Patent: November 12, 2019
    Assignee: Pentair Water Pool and Spa, Inc.
    Inventors: Bruce Johnson, Kevin Doyle, Keith Schulte
  • Patent number: 10472265
    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: March 25, 2016
    Date of Patent: November 12, 2019
    Assignee: Clean Chemistry, Inc.
    Inventor: Wayne E. Buschmann
  • Patent number: 10450208
    Abstract: Various illustrative embodiments of a process for enhanced flocculation and clarification of produced water from oil and gas wells using nanoparticles are provided herein. Certain nanoparticles can increase the settling rate of solids in produced water when used alone or combined with certain conventional flocculents.
    Type: Grant
    Filed: June 1, 2016
    Date of Patent: October 22, 2019
    Inventors: Oleksandr Kuznetsov, Radhika Suresh, Valery Khabashesku
  • Patent number: 10442715
    Abstract: The present invention provides a chromium-containing water treatment method that allows treatment of water that contains chromium (chromium-containing water) at low cost. A chromium-containing water treatment method according to the present invention comprises: a reduction step in which chromium-containing water 11 and a liquid 12 containing 5-50 ppm of hydrogen sulfide are mixed, and the mixture is adjusted to pH 3.5 or lower and ORP 200-400 mV by adding an acid 13 thereto, so as to reduce chromium contained in the water; and a precipitation separation step in which a neutralizing agent is added to a solution 11? obtained via the reduction step so as to adjust the solution 11? to pH 8-9, thereby precipitating and separating, as a hydroxide, the reduced chromium contained in the solution.
    Type: Grant
    Filed: September 15, 2015
    Date of Patent: October 15, 2019
    Inventors: Hiroyuki Mitsui, Osamu Nakai, Keisuke Shibayama, Sho Shirai
  • Patent number: 10436686
    Abstract: The invention relates to a method of separating biological particles from the liquid containing same for purification, analysis and optionally diagnostic purposes. The inventive method comprises at least one step involving vertical filtration through a filter having a porosity that is adapted to the type of biological particles to be separated, such that said particles are retained by the filter. The invention is characterised in that: (i) the method involves the use of a filter comprising at least one basic filtration zone, whereby each basic filtration zone has a limited surface area; and (ii) the surface area of each basic filtration zone and the number of basic filtration zones are selected as a function of the type of liquid to be filtered, the type of biological particles to be separated and the volume of liquid to be filtered.
    Type: Grant
    Filed: September 18, 2017
    Date of Patent: October 8, 2019
    Inventor: Patrizia Paterlini-Brechot
  • Patent number: 10427963
    Abstract: A method for inhibiting the formation, deposition and adherence of scale to metallic and other surfaces in the equipment, vessels and/or piping of facilities for the handling of oil and gas produced fluid is disclosed. An effective scale inhibiting amount of alginate is added to a produced fluid containing a scale-forming divalent cation. The alginate effectively cross-links with a scale-forming divalent cation, e.g., calcium, forming an alginate gel for subsequent separation and removal from the produced fluid.
    Type: Grant
    Filed: January 29, 2016
    Date of Patent: October 1, 2019
    Assignee: Chevron U.S.A. Inc.
    Inventors: Mark Charlesworth, Christopher John Kalli, David Glynn Thomas, Wei Shi, Brendan Francis Graham, Zachary Mark Aman, Eric Freemantle May
  • Patent number: 10414673
    Abstract: A method for testing an underwater filtration system as well as the underwater testing device which enables the operation of filtration systems in aquatic conditions. The testing method includes introducing a flow of water into the underwater testing device via a water inlet, said underwater testing device including at least one filter, bringing said flow in the underwater testing device up to said filter, obtaining a filtrate downstream of said filter and discharging said filtrate into the environment via a discharge pipe. The underwater testing device is placed underwater at a depth of at least 500 meters.
    Type: Grant
    Filed: September 19, 2013
    Date of Patent: September 17, 2019
    Inventors: Pierre Pedenaud, Samuel Heng, Didier Bigeonneau, Stéphane Anres, Raymond Hallot, Michel Baylot, Mourad Ben Boudinar, Graeme Skivington
  • Patent number: 10392276
    Abstract: The present invention provides a TiO2-based coagulant and use thereof. The TiO2-based coagulant is obtained by the following steps: uniformly mixing acetylacetone and ethanol and dropwise adding titanium tetrachloride to obtain a solution A; mixing deionized water and ethanol to obtain a solution B; dropwise adding solution B to solution A; stirring to obtain a sol, and then aging the sol to constant weight to obtain the TiO2-based coagulant. The TiO2-based coagulant can be used for treating waste water and algae-laden water. The TiO2-based coagulant exhibits good coagulation effects and high stability, solves the problem of too low effluent pH caused by strong inorganic titanate acidity and is favorable to the subsequent treatment of waste water.
    Type: Grant
    Filed: June 23, 2015
    Date of Patent: August 27, 2019
    Inventors: Shujuan Zhang, Xiaomeng Wang, Minghui Li, Xiaojie Song, Bingdang Wu
  • Patent number: 10384150
    Abstract: Certain aspects of the present disclosure relate to a fluid treatment reactor. Separate input ports for influent and recycled effluent serve to eliminate the need for pH adjustment or carbonate stripping of the influent and recycled effluent flows. The fluid treatment reactor may include a media, a vessel including a top portion and a bottom portion, a solid discharge port, an effluent discharge port, an influent input in fluid communication with the media, and a recycled effluent port in fluid communication with the media.
    Type: Grant
    Filed: April 6, 2017
    Date of Patent: August 20, 2019
    Assignee: ECOLAB USA INC.
    Inventor: Kevin Patrick O'Leary
  • Patent number: 10372144
    Abstract: A flocculation control system that floats particles that attach to nano and/or micro bubbles out of a liquid includes at least one sensing system, at least one processing system, and at least one fluid additive control system. The at least one sensing system is configured to reproduce one or more nano-bubbles with one or more particles suspended in a fluid. The at least one processing system is configured to measure, using outputs of the at least one sensing system, incident angles between the one or more nano-bubbles and the one or more particles suspended in the fluid. And the at least one fluid additive control system is configured to adjust, based on at least the incident angles, an amount of a surfactant being added to the fluid.
    Type: Grant
    Filed: November 30, 2015
    Date of Patent: August 6, 2019
    Assignee: International Business Machines Corporation
    Inventors: Alexe Bojovschi, Rajib Chakravorty, Sridhar Kannam, Xi Liang
  • Patent number: 10371108
    Abstract: A fuel filter for a fuel supply system of an internal combustion engine may include a filter housing, which may have an untreated-side inlet, a treated-side outlet, and an untreated-side return line. The fuel filter may also include a filter element arranged in the filter housing, and a closure element, which in an operationally ready state of the fuel filter may close off the return line. The fuel filter may include an untreated space and a treated space, and may separate in the filter housing the untreated space communicating with an inlet and the return line from the treated space communicating with the outlet. The fuel filter may further include a pressure sensor configured to measure a pressure build-up in the treated space, wherein the fuel filter may be configured to enable the pressure build-up to reach a predetermined threshold at which the engine may be started.
    Type: Grant
    Filed: September 2, 2016
    Date of Patent: August 6, 2019
    Assignee: Mahle International GmbH
    Inventor: Michael Braunheim
  • Patent number: 10365012
    Abstract: Provided is a faucet device for an aircraft lavatory unit, wherein a second joint and a third joint are joined by inserting the third joint of a heater module into a second joint of a valve module, and screw members are used to fasten a first case and a second case. As a result, the valve module and the heater module are joined in series via the second joint and the third joint. A first connector of a controller module is joined to a third connector of the valve module and a second connector of the controller module is joined to a fourth connector of the heater module. The first joint of the valve module is joined to a water supply pipe. A fourth joint of the heater module and a faucet main body are joined via a pipe.
    Type: Grant
    Filed: March 11, 2014
    Date of Patent: July 30, 2019
    Assignee: The Yokohama Rubber Co., LTD.
    Inventor: Takashi Koyama
  • Patent number: 10364585
    Abstract: The present application relates to an innovative and optimized method and system for maintaining water quality in water bodies such as excavated inland structures and floating structures with bottoms comprising flexible membranes, using a simplified economic filtration system and degreasing system that requires much smaller filtration equipment than conventional centralized filtration systems and provides for consumption of significantly lower amounts of energy. The method of the invention allows activating a chemical application system, mobile suctioning device, and/or degreasing system based on information regarding turbidity, the color of the bottom of the water body, and amount of greases on the surface water layer of the water body, to adjust the water quality parameters within their limits.
    Type: Grant
    Filed: August 11, 2015
    Date of Patent: July 30, 2019
    Inventor: Fernando Benjamin Fischmann
  • Patent number: 10357599
    Abstract: A system for acquiring or measuring information relating to a state of dialysance, identifying a dialyzer apparatus, or identifying a membrane filter device during the operation of the dialyzer apparatus in a dialysis treatment of a patient. The dialyzer apparatus includes a housing having an internal volume portion and a membrane filter device arranged within the internal volume portion. The housing allows transmission of radiation. A sensor device connected to the housing of the dialyzer apparatus includes a signal receiving device designed to receive a radiation signal from the housing, the signal characteristic of the state or the identification of the dialyzer apparatus or of the membrane filter unit of the dialyzer apparatus.
    Type: Grant
    Filed: March 27, 2014
    Date of Patent: July 23, 2019
    Assignee: B. Braun Avitum AG
    Inventors: Christof Strohhoefer, Silvie Krause
  • Patent number: 10336631
    Abstract: A wastewater treatment method and a wastewater treatment apparatus securely and readily remove selenium, which is considered harmful, by removing not only 0-valent selenium, 4-valent selenium, and 6-valent selenium, but also -2-valent selenium. In the wastewater treatment method and the wastewater treatment apparatus for treating wastewater including selenium, -2-valent selenium included in the wastewater is oxidated by using an oxidant, or -2-valent selenium included in the water is removed by using a remover.
    Type: Grant
    Filed: October 6, 2014
    Date of Patent: July 2, 2019
    Inventor: Masaru Chiyomaru
  • Patent number: 10338631
    Abstract: A portable digital optical camera-based system and method can be used to test water and coagulant samples in a chamber. The chamber has a substantially square shaped horizontal cross section and a least one see-through wall. The system and method can comprise a light source and a contrast plate that are configured to be manually placed, at least partially, into the water and coagulant samples through an aperture at the top of the chamber. The camera is configured to be located outside the chamber and to view an illuminated region in the chamber though the see-through wall. The system and method further comprise a mixing paddle that can be programmed to operate at different speeds during different time segments. The system and method can measure, store, and display time-series data of floc particle count, floc volume concentration, equivalent average spherical floc particle diameter, and computed average floc particle volume of the water and coagulant samples.
    Type: Grant
    Filed: May 2, 2017
    Date of Patent: July 2, 2019
    Assignee: Clearcorp
    Inventors: Roger M. Jorden, Frank Hage
  • Patent number: 10335715
    Abstract: A water skimmer has a float portion supporting a drain portion for draining water from a sediment basin. The drain portion includes a first pipe connect via flexible couplings to a second pipe and then to a water removal system. Water enters the first pipe's orifice through a removable, restrictive orifice saddle. The first pipe is bolted to the float portion using a guard and brackets that hold first pipe just below the water surface to receive water with less sediment. The guard also blocks floating debris while allowing water to flow to the weir under its bottom edge. As the water level rises and falls, the flexible couplings and float portion help maintain first pipe horizontal.
    Type: Grant
    Filed: May 16, 2014
    Date of Patent: July 2, 2019
    Assignee: SW Feesaver, LLC
    Inventor: James McCutchen