Including Oxidation Patents (Class 210/721)
  • Patent number: 10711201
    Abstract: The invention relates to methods for converting algal biomass into a gas or into biocrude comprising (a) gasification or hydrothermal liquefaction of an algal biomass in at least one first reactor, (b) separation of the gas or biocrude produced thereby from the aqueous effluents and the CO2 produced, at the outlet of the first reactor, (c) recovery of the aqueous effluents, and (d) oxidation of the aqueous effluents in at least one second reactor. Continuous processes for culture of algal biomass and conversion of the algal biomass cultivated into a gas or into a biocrude are also disclosed.
    Type: Grant
    Filed: December 21, 2015
    Date of Patent: July 14, 2020
    Inventors: Jonathan Texier, Pierre Castelli, Anne Roubaud
  • Patent number: 10654739
    Abstract: Methods and systems including processing dredge spoils to reclaim soil therefrom. The techniques may include a feed system for receiving dredge spoils, a dewatering system for removing water from the dredge spoils, and a grinder/mixer for grinding the dredge spoils from the dewatering system while mixing the dredge spoils with one or more additional materials.
    Type: Grant
    Filed: August 21, 2015
    Date of Patent: May 19, 2020
    Assignee: Dredge Spoils Reclamation, LLC
    Inventor: Patrick D. Wade
  • Patent number: 10526217
    Abstract: The present application discloses a method for producing acrylate with low pollutant discharge. The method has the advantages of high raw material utilization efficiency, low concentration, low salinity and low toxicity of wastewater pollutant, easy treatment of wastewater and etc.
    Type: Grant
    Filed: April 21, 2017
    Date of Patent: January 7, 2020
    Inventors: Yuexi Zhou, Yudong Song
  • Patent number: 9873624
    Abstract: A process of removing selenocyanate from an aqueous medium contaminated with at least selenocyanate. In the presence of UV light and TiO2 as a photocatalyst, selenocyanate is initially photolyzed to release Se(0). Se(0) is then oxidized to Se(IV) and finally Se(VI) by free radicals generated by the photocatalyst. After the oxidation is complete, a hole scavenger is added and mixed with the aqueous medium to trigger the reduction of Se(VI) to Se(0).
    Type: Grant
    Filed: April 23, 2015
    Date of Patent: January 23, 2018
    Assignee: King Fahd University of Petroleum and Minerals
    Inventor: Muhammad Shariq Vohra
  • Patent number: 9701554
    Abstract: An aeration control valve system may be used with a water treatment system to control aeration and flow of water in accordance with various operating cycles. The aeration control valve system causes air to be pumped or drawn into the water treatment system during an air charge cycle to provide an air charge for aerating the water to facilitate water treatment. The aeration control valve system releases the air during an air release cycle without requiring a backwash cycle. In one embodiment, the aeration control valve system includes a control valve unit configured for connection to a brine tank but instead fluidly coupled to an air intake inlet and an air release outlet for supplying and releasing air, respectively, when the valve cycle actuator is in the brine position and brine tank fill position, respectively.
    Type: Grant
    Filed: March 8, 2016
    Date of Patent: July 11, 2017
    Assignee: R.E. Prescott Co., Inc.
    Inventor: Russell E. Prescott
  • Patent number: 9656230
    Abstract: A continuous process to upgrade heavy crude oil for producing more valuable crude feedstock having high API gravity, low asphaltene content, and high middle distillate yield, low sulfur content, low nitrogen content, and low metal content without external supply of hydrogen and/or catalyst. Heavy crude oil having substantial amount of asphaltene and heavy components is mixed with highly waxy crude oil having large amount of paraffinic components and water to decompose asphaltene compounds and remove sulfur, nitrogen, and metal containing substances under supercritical conditions. Product has higher API gravity, lower asphaltene content, high middle distillate yield, lower sulfur content, lower nitrogen content, and lower metal content to be suitable for conventional petroleum refining process.
    Type: Grant
    Filed: July 23, 2014
    Date of Patent: May 23, 2017
    Inventor: Ki-Hyouk Choi
  • Patent number: 9534273
    Abstract: The present invention is directed to a precious metal recovery process in which an acid sulfidic feed material is subjected to acid pressure oxidation and an alkaline sulfidic feed material is subjected to alkaline pressure oxidation, with the discharge slurries from the pressure oxidation processes being combined to reduce neutralization requirements prior to precious metal recovery.
    Type: Grant
    Filed: December 11, 2013
    Date of Patent: January 3, 2017
    Inventors: John William Langhans, Jr., Wilson Chung-Yeh Tsu
  • Patent number: 9328008
    Abstract: A supercritical water oxidation treatment system for organic wastewater with a high salinity crystallizes high-salinity wastewater by a low temperature of liquid oxygen, and decreases an inorganic salt content in the wastewater. Under supercritical water conditions, a hydrocyclone (4) separates most precipitated solid salts in the wastewater, so effectively prevents pipes and the tubular reactor (22) after the hydrocyclone (4) from plugging. Inorganic salts are able to be continuously separated from the system by the hydrocyclone (4) at the bottom of a desalination device, In addition, excess oxygen and gaseous products CO2 are recovered by a separation recovery part. The reaction time and the reaction temperature of supercritical water oxidation reaction are lowered due to the installation of a simple post-treatment unit (37). Moreover, the heat of the reactor effluent with a high temperature is recovered in the system, so operation cost of the system is reduced evidently.
    Type: Grant
    Filed: December 5, 2012
    Date of Patent: May 3, 2016
    Inventors: Shuzhong Wang, Donghai Xu, Xingying Tang, Yanmeng Gong, Jie Zhang, Yuzhen Wang
  • Publication number: 20150129507
    Abstract: The present invention is directed to a method for the treatment of an environmental medium contaminated with arsenic, comprising treating such medium with an effective amount of persulfate and zero valent iron.
    Type: Application
    Filed: November 11, 2014
    Publication date: May 14, 2015
    Applicant: PEROXYCHEM LLC
    Inventor: Philip A. BLOCK
  • Patent number: 8980173
    Abstract: Disclosed are systems and methods for monitoring and controlling a real-time oxidation-reduction potential in a hot water system to inhibit corrosion in the hot water system. The method includes defining one or more operational protective zones in the hot water system. One or more of the operational protective zones includes an oxidation-reduction potential probe that is operable to measure a real-time oxidation-reduction potential in the hot water system at operating temperature and pressure. The probe transmits the measured real-time potential to the controller, which assesses and interprets the transmitted potential to determine whether it conforms to an oxidation-reduction potential setting. If the measured potential does not conform the oxidation-reduction potential setting, the controller is operable to feed or remove one or more active chemical species into or from the hot water system and further operable to change at least one system parameter.
    Type: Grant
    Filed: February 21, 2013
    Date of Patent: March 17, 2015
    Assignee: Nalco Company
    Inventors: Jeffrey V. Fox, George T. Totura, Peter Hicks, David A. Grattan, Martin Godfrey
  • Publication number: 20150041404
    Abstract: A method for treating acid mine drainage includes mixing acid mine drainage (20) and alkaline tailings from a gold recovery process (140). The acid mine drainage is thereby neutralized (12).
    Type: Application
    Filed: March 12, 2013
    Publication date: February 12, 2015
    Inventors: Jan Hendrik Phillipus Jacobs, Robert George Freeman
  • Publication number: 20150013987
    Abstract: A process for treating oilfield waste water includes contacting the oilfield waste water with hydrogen peroxide, the oilfield waste water comprising sulfide; oxidizing the sulfide to sulfur; and precipitating the sulfur to form treated water from the oilfield waste water. A process for recycling oilfield waste water includes combining the oilfield waste water and hydrogen peroxide, the oilfield waste water comprising sulfide; oxidizing the sulfide to sulfur; forming a precipitate comprising a colloidal sulfur precipitate, a bulk sulfur precipitate, or a combination comprising at least one of the foregoing; removing the precipitate from the oilfield waste water to form treated water; introducing an additive to the treated water; and disposing the treated water in a subterranean environment.
    Type: Application
    Filed: July 11, 2013
    Publication date: January 15, 2015
    Inventors: Timothy Underwood, Armando Gomez, Larry Gene Hines, Jenifer Lascano
  • Publication number: 20140374104
    Abstract: A method for reducing sulfide in oilfield waste water includes contacting oilfield waste water with an oxidizer in the presence of an iron catalyst. The oilfield waste water includes sulfide that is oxidized to sulfate while avoiding formation of a colloidal or bulk sulfur precipitate. A method for recycling oilfield waste water includes contacting oilfield waste water with an oxidizer in the presence of an iron catalyst, the oilfield waste water comprising sulfide; oxidizing the sulfide to sulfate; avoiding formation of a colloidal sulfur precipitate, a bulk sulfur precipitate, or a combination comprising at least one of the foregoing; clarifying the oilfield waste water by contacting the oilfield waste water with a flocculant to form an aggregate precipitate; separating the aggregate precipitate from the oilfield waste water to form a recycled water; combining an additive with the recycled water; and disposing the recycled water in a downhole environment.
    Type: Application
    Filed: June 24, 2013
    Publication date: December 25, 2014
    Inventor: Kushal Seth
  • Publication number: 20140363364
    Abstract: The present invention relates to a method for purification of produced water and to a system for carrying out the inventive method. Further, the invention relates to a purified produced water product obtainable according to the invention. A unique sequence of unit operations including the addition of dissolved calcium hydroxide and the subsequent precipitation thereof enable a particularly efficient removal of contaminating substances from produced water from the petrochemical industry.
    Type: Application
    Filed: January 7, 2013
    Publication date: December 11, 2014
    Applicant: PURETEQ A/S
    Inventor: Dennis Søgaard
  • Patent number: 8894865
    Abstract: This invention relates generally to processes for extracting iron and/or calcium from geothermal brines.
    Type: Grant
    Filed: November 14, 2012
    Date of Patent: November 25, 2014
    Assignee: Berkshire Hathaway Energy Company
    Inventors: John L. Featherstone, George Furmanski
  • Publication number: 20140332472
    Abstract: The invention discloses a process to implement and maintain water bodies larger than 15,000 m3 for recreational use, such as lakes or artificial lagoons, with excellent color, transparency and cleanness properties at low cost, which comprises the following steps: a.—providing a structure able to contain a large water body larger than 15,000 m3; b.—feeding the structure of step (a) with inlet water having iron and manganese levels lower than 1.5 ppm and turbidity lower than 5 NTU; c.—measuring water pH, ideally it should be within a range lower than 7.8; d.—adding an oxidizing agent to the water contained in the structure of step (a), with which a 600 mV minimal ORP is controlled in water for a minimal period of 4 hours and in maximal cycles of 48 hours; e.—adding a flocculating agent in concentrations within 0.
    Type: Application
    Filed: July 28, 2014
    Publication date: November 13, 2014
    Inventor: Fernando Benjamin FISHMANN TORRES
  • Patent number: 8871097
    Abstract: A method of reclaiming a formate brine may include increasing the pH of a spent formate brine fluid comprising water-soluble polymers; treating the fluid with an oxidizing agent; and removing at least a portion of suspended solids from the fluid. Further, a method of reclaiming a formate brine may include lowering the pH of the spent formate brine fluid comprising water-soluble polymers; increasing the pH of the spent formate brine fluid to initiate precipitation of materials solubilized in the fluid; treating the fluid with an oxidizing agent to break down remaining water-soluble polymer; and recovering at least a portion of the formate brine.
    Type: Grant
    Filed: July 24, 2008
    Date of Patent: October 28, 2014
    Assignee: M-I L.L.C.
    Inventors: Hui Zhang, Robert L. Horton, Charles Svoboda, Frank E. Evans
  • Publication number: 20140263079
    Abstract: The present invention relates to systems and methods of wastewater treatment that rely primarily on the use of water treatment chemicals to clean wastewater without the need to use filtration mechanisms. The present invention generally provides a system that is less complex and less expensive to operate than wastewater treatment systems in the prior art.
    Type: Application
    Filed: March 14, 2013
    Publication date: September 18, 2014
    Applicant: DuBois Chemicals, Inc.
    Inventor: Brent K. McCurdy
  • Publication number: 20140251904
    Abstract: The present invention discloses device that can generate a strong vortex in the vortex chamber which significantly enhances rate of reactions and effectiveness of waste water treatment. The present invention disclose vortex diodes with or without inserts/stabilizers as continuous flow reactors to induce cavitation to generate radicals which reduces Chemical Oxygen Demand (COD), ammoniacal nitrogen and color of waste water effectively in effluent treatments.
    Type: Application
    Filed: October 11, 2012
    Publication date: September 11, 2014
    Inventors: Vivek Vinayak Ranade, Amol Arvind Kulkarni, Vinay Manoharrao Bhandari
  • Publication number: 20140246376
    Abstract: A process of concentrating a suspension of solid particles in an aqueous medium comprising introducing into the suspension at least one organic polymeric flocculant and addition of an agent system, in which the solid particles in the suspension are flocculated by the action of the at least one organic polymeric flocculant and the so formed flocculated solid particles settle to form a settled layer of solids suspended in the aqueous medium, wherein the agent system comprises: i) at least one oxidising agent; ii) at least one control agent,
    Type: Application
    Filed: October 24, 2012
    Publication date: September 4, 2014
    Applicant: BASF SE
    Inventors: Alexsandro Berger, Stephen Adkins, Stephan Hess
  • Publication number: 20140246375
    Abstract: The present invention relates to a continuous bipolar electrochemically based reactor for the purpose of destroying free cyanide by direct and indirect oxidation and removing its strong complexes like ferrocyanide and ferricyanide by electrocoagulation. The designed reactor consists of four main sections, including electrooxidation, hydraulic mixing, electrocoagulation, and precipitation tank. The order of sections results in having a combination of reactions which separately remove cyanide and its compounds. The designed reactor shows a high flexibility in terms of handling highly variable kinds and concentrations of cyanide in the industrial wastewater effluents.
    Type: Application
    Filed: March 3, 2013
    Publication date: September 4, 2014
    Inventors: Hamed Gharibi, Amir Hossein Mahvi
  • Publication number: 20140238941
    Abstract: A mixing chamber system for removal of contaminants from a liquid, and related systems and methods, are provided. The mixing chamber system includes a length of pipe having a hollow interior. A plurality of perforated discs are stationarily positioned within the hollow interior in at least a portion of the length of pipe, wherein each of the plurality of perforated discs has a curved profile, wherein a middle portion of each of the plurality of perforated discs is offset from a radial edge of each of the plurality of perforated discs, respectively.
    Type: Application
    Filed: February 21, 2014
    Publication date: August 28, 2014
    Inventor: Frederick J. Haydock
  • Patent number: 8801937
    Abstract: A process for treatment of water containing an azole-type anticorrosive for copper, includes adding ferrous ions to the water containing the azole-type anticorrosive for copper and having a pH of 4-8, thereby precipitating an insoluble iron-azole complex, and separating the insoluble iron-azole complex. An amount of the ferrous ions added is 0.5 to 5.0 times, by molar ratio, an amount of the azole-type anticorrosive for copper in the water containing the azole-type anticorrosive for copper. After the insoluble iron-azole complex is separated, remaining total organic carbon (TOC) components are subjected to an ozone treatment.
    Type: Grant
    Filed: October 21, 2009
    Date of Patent: August 12, 2014
    Assignee: Kurita Water Industries Ltd.
    Inventors: Tomoharu Yasuike, Atsushi Nemoto
  • Patent number: 8795536
    Abstract: Process for degrading organic substances in an aqueous composition comprising a step (a) wherein, in a liquid reaction medium, said aqueous composition is reacted with at least one composition comprising hydroxide ions (OH?) and hypochlorite in a molar ratio between hydroxide and hypochlorite higher than or equal to 0.001 and lower than 1.5, in order to oxidize said organic substances.
    Type: Grant
    Filed: January 29, 2009
    Date of Patent: August 5, 2014
    Assignee: Solvay (Societe Anonyme)
    Inventors: Patrick Gilbeau, Ward Blancke
  • Patent number: 8790518
    Abstract: The invention discloses a process to implement and maintain large water bodies with color, transparency, and cleanness characteristics similar to swimming pools or tropical seas, at low cost. The present invention also discloses a structure to contain large water bodies, comprising a system for the removal of impurities and surface oils by means of skimmers and a suction device to clean said structure.
    Type: Grant
    Filed: March 30, 2011
    Date of Patent: July 29, 2014
    Assignee: Crystal Lagoons (Curacao) B.V.
    Inventor: Fernando Benjamin Fischmann Torres
  • Patent number: 8790516
    Abstract: The invention relates to a method for removing arsenic as scorodite from solutions that contain iron and arsenic. In accordance with the method, arsenic is first precipitated as ferric arsenate and subsequently processed hydrothermally into crystalline scorodite.
    Type: Grant
    Filed: February 19, 2010
    Date of Patent: July 29, 2014
    Assignee: Outotec Oyj
    Inventors: Mikko Ruonala, Jaakko Leppinen, Ville Miettinen
  • Patent number: 8772004
    Abstract: A method and device for aggregating algae in an aqueous solution is disclosed. The method can include providing an algae feed comprising a liquid and algae dispersed therein. The algae feed can be aggregated by applying a nanosecond pulsed electric field to the algae feed. The nanosecond pulsed electric field can include a plurality of electric pulses having a pulse duration ranging from 1 to 1,000 nanoseconds. The method can also include separating an aggregated algae stream from the algae feed and feeding the aggregated algae stream to a lipid extraction operation.
    Type: Grant
    Filed: June 25, 2010
    Date of Patent: July 8, 2014
    Assignee: Old Dominion University Research Foundation
    Inventors: Gary C. Schafran, Juergen F. Kolb, Aron Stubbins, Karl H. Schoenbach
  • Patent number: 8753518
    Abstract: In one aspect the invention provides a system for treating a wastestream, particularly a radwaste, for safe disposal and, in final processing converting it into one or both forms including an aqueous form for safe discharge to the environment and a solidified form for safe disposal. In another aspect the invention provides the capacity to employ a step where a specific target element strategy can be set up synchronizing sorbent substance choices and multiple recycle options to remove target substances from wastestream as a part of its Sorption or Powder Sorbent Isotopic Reduction step (II). Other steps cooperate with Sorption step (II) including Oxidation (I), Solid-Liquid separation (III), and Selective Ion Exchange (IV) to deliver the wastestream to final processing.
    Type: Grant
    Filed: September 25, 2011
    Date of Patent: June 17, 2014
    Assignee: Diversified Technologies Services, Inc.
    Inventors: Dennis A. Brunsell, Charles E. Jensen, Larry E. Beets
  • Publication number: 20140151296
    Abstract: Systems and methods for removing organic contaminants from water may be used, for example, to treat produced water from a steam assisted heavy oil recovery operation. The treated produced water may be re-used to create steam. Alternatively, the produced water may be a blowdown stream treated to facilitate further treatment in a thermal crystallizer. The treatments may include pH adjustment or separating de-solubilized organics or both. Other treatments may include one or more of oxidation, sorption and biological treatments. The treatments may be used alone or in various combinations. One exemplary combination includes reducing the pH of produced water, separating de-solubilized organics from the produced water, and oxidizing the produced water or contacting the produced water with activated carbon.
    Type: Application
    Filed: March 14, 2013
    Publication date: June 5, 2014
    Applicant: General Electric Company
    Inventors: Brian Christopher MOORE, Hope MATIS, William Leonard KOSTEDT, IV, David M. POLIZZOTTI, Matthew Alan PETERSEN, Jeffrey Lynn SCHWORM, Anthony Yu-Chung KU
  • Publication number: 20140151301
    Abstract: Provided is a method for treating an arsenic-containing aqueous solution by water treatment employing a titanium dioxide photocatalyst that is excellent in both photocatalytic activity and solid-liquid separation performance. The method according to the present disclosure includes the steps of adding catalyst particles to the aqueous solution; oxidizing trivalent arsenic by irradiating the aqueous solution with light having a wavelength of 200 nanometers or more and 400 nanometers or less while stirring the catalyst particles in the aqueous solution; and stopping the stirring and separating the catalyst particles from the aqueous solution by sedimentation. Each catalyst particle is composed only of a titanium dioxide particle and a zeolite particle, the titanium dioxide particle is adsorbed on the outer surface of the zeolite particle, the zeolite particle has a silica/alumina molar ratio of 10 or more, and the catalyst particles are contained in the aqueous solution at a concentration of 0.
    Type: Application
    Filed: February 4, 2014
    Publication date: June 5, 2014
    Inventors: Yuko MARUO, Daisuke INO
  • Publication number: 20140144844
    Abstract: A method of treating contaminated water effluent from a well drilling operation. The method comprises decomposing organic contaminants in the effluent by bubbling a gas containing ozone through the effluent; adding a coagulant to increase the particle size of solid particles contained in the effluent; adding a flocculant to increase the particle size of solid particles contained in the effluent, thereby forming floes suspended in the effluent; and filtering the floes from the effluent to produce a filtrate and flocculated solids. The method may further comprise adding the coagulant into a stream of effluent flowing within a first conduit under controlled shear conditions, and adding the flocculant into a stream of effluent containing pin floes flowing within a second conduit under controlled shear conditions. The method may further comprise delivering the effluent containing the suspended floes into a filter through a conduit floating in the effluent contained in the filter.
    Type: Application
    Filed: May 2, 2012
    Publication date: May 29, 2014
    Inventors: Francis C. Miller, Steve Addleman
  • Publication number: 20140144845
    Abstract: Embodiments of the invention provide a method and system for providing a regeneration stage in a water treatment system. The method can include entering a first air bleed state to allow pressurized, deoxygenated air to exit the water treatment system, entering a second air bleed state to equalize a first air pressure of remaining deoxygenated air inside the water treatment system with a second air pressure outside the water treatment system, entering a backwash state to expel remaining deoxygenated air and particulates from inside the water treatment system, and entering an air draw state to allow oxygenated air to enter the water treatment system.
    Type: Application
    Filed: January 6, 2014
    Publication date: May 29, 2014
    Applicant: Pentair Residential Filtration, LLC
    Inventors: Andrew Tischendorf, Michael M. Lindfors, Kyle Paull
  • Patent number: 8734653
    Abstract: A mercury remediation method and apparatus for reducing mercury levels in water to a nanogram per liter level that uses four treatment steps: (1) chelation; (2) oxidation; (3) reduction; and (4) air stripping, vapor/liquid separation. There is a fifth step in the process, which does not involve the wastewater. It is to scrub the stripper air of the volatile mercury in an off-gas adsorption unit or to condense volatile mercury in a cryogenic mercury trap.
    Type: Grant
    Filed: November 30, 2011
    Date of Patent: May 27, 2014
    Inventor: Terrence W. Aylesworth
  • Patent number: 8728325
    Abstract: Advanced oxidation process namely ozonation and Fenton's (hydrogen peroxide/Fe:2+) were utilized to degrade kinetic hydrate inhibitor (KHI). The oxidized solution after scavenging oxygen can be successfully disposed to the injection well. This facilitates use of KHI more frequently and in higher concentrations for future projects oil & gas operations. It also offers an alternative that competes efficiently with thermodynamic hydrate inhibitor (THI) or complements THI.
    Type: Grant
    Filed: March 1, 2012
    Date of Patent: May 20, 2014
    Assignee: ConocoPhillips Company
    Inventors: Altaf Hussain, Isik Riza Turkmen, Joel Minier Matar, Samir Gharfeh, Samer Adham
  • Patent number: 8721898
    Abstract: Disclosed is an improved water treatment cavitation reactor cone. The tank operates on a continuous flow of fluids which are subjected to ultrasonic waves in combination with a high level of injected ozone. The treatment tank includes a tangential inlet that induces a rotating flow into the tank thereby increasing the mixing of the ozone within the effluent. The effluent is further treated with DC current. The treatment tank provides a cost efficient and environmentally friendly process and apparatus for cleaning and recycling fluids as contaminated as frac water, used to stimulate gas production from shale formations, as well as other types of fluids having various levels of contaminants such as aerobic and anaerobic bacteria and suspended solids. The calcium carbonate scaling tendency is reduced to an acceptable level without the use of acids, ion exchange materials, or anti scaling chemicals which is of economical and environmental significance and benefit.
    Type: Grant
    Filed: April 23, 2010
    Date of Patent: May 13, 2014
    Assignee: Ecosphere Technologies, Inc.
    Inventors: Dennis McGuire, Sanjeev Jakhete
  • Publication number: 20140124453
    Abstract: Methods and systems for treating contaminated flow-back water produced by hydraulic fracture are provided. The method involves precipitating metals from the flow-back water stream in a first reaction using at least one oxidizing agent, at least one pH adjusting agent, a source of sulfate and carbonate ions, and at least one co-precipitation agent. The precipitated metals may be dewatered using a first filter and may be used as an additive to drilling mud. The flow-back water may be further purified in a second reaction by addition of at least one pH adjusting agent and hydrated lime to precipitate salts. The precipitated salts may be dewatered using a second filter and may be used as an accelerating additive to concrete. The purified flow-back water may be stabilized by the addition of at least one pH adjusting agent to provide a water stream that may be reused in the hydraulic fracture drilling process.
    Type: Application
    Filed: November 8, 2012
    Publication date: May 8, 2014
    Inventor: Michael Presutti
  • Publication number: 20140116954
    Abstract: Methods of removing one or more oxyanions from an aqueous fluid can comprise increasing the pH of an aqueous fluid containing one or more oxyanions and contacting the aqueous fluid with aluminum metal.
    Type: Application
    Filed: October 23, 2013
    Publication date: May 1, 2014
    Applicant: The Water Company
    Inventors: Brian B. ELSON, Michael Fallbach
  • Patent number: 8709259
    Abstract: The present invention is a wastewater treatment method using dried BOF slag and hydrogen peroxide, wherein hydrogen peroxide is oxidized to generate hydroxyl radicals that reacts with soluble metal contaminants in the sludge such that these contaminants can be adsorb on the catalyst particles and/or eliminated from the wastewater stream by separation techniques. The process can use catalytic oxidation for soluble metals removal. In addition, catalytic oxidation can produce a filtered water saturated with Oxygen and higher in pH resulting in enhanced precipitation of soluble metals when softening agents, such as Sodium Carbonate, are added in a subsequent processing step. Another embodiment of the present invention is a method using ferrous sulfate for removing soluble metals in wastewater, followed by Catalytic Oxidation to remove soluble Fe without addition of metal salts, and removing sulfates by adding Barium Carbonate.
    Type: Grant
    Filed: December 2, 2011
    Date of Patent: April 29, 2014
    Inventor: Frederick Douglas, Sr.
  • Patent number: 8685253
    Abstract: A method of removing color bodies from a fermentation broth includes precipitating a color-forming impurity (color body) by adjusting the fermentation broth to a pH greater than about 13; filtering our precipitated color-forming impurities from the broth; and bleaching a second color impurity by treating the broth with an oxidizing agent.
    Type: Grant
    Filed: September 24, 2010
    Date of Patent: April 1, 2014
    Assignee: BioAmber S.A.S.
    Inventor: Olan S. Fruchey
  • Patent number: 8663496
    Abstract: The invention relates to a double-layered compacted solid water-purification product, comprising at least one first layer and at least one second layer, characterized in that the first layer comprises at least one flocculating system and at least one dispersion system, the second layer comprises at least one disinfectant which liberates free chlorine on contact with water and at least one excipient for the disinfectant, whereby said excipient releases the disinfectant into the water at a controlled rate such that the combination of excipient and disinfectant releases 0.1 to 100 mg/l of free chlorine per hour. The invention further relates to the method for production of such a product.
    Type: Grant
    Filed: July 18, 2005
    Date of Patent: March 4, 2014
    Assignee: Eurotab
    Inventors: Paul Branlard, Philippe Desmarescaux, Murielle Moneron
  • Publication number: 20130341283
    Abstract: The invention relates to a method for precipitating pentavalent calcium arsenate from an acidic solution, in which arsenic is at least partially in trivalent form. The acidic solution is neutralised before being routed to an arsenic oxidation stage,and a poorly soluble calcium-arsenic compound is precipitated from the solution, in which all the arsenic is pentavalent.
    Type: Application
    Filed: March 7, 2012
    Publication date: December 26, 2013
    Applicant: OUTOTEC OYJ
    Inventor: Teppo Riihimäki
  • Publication number: 20130319939
    Abstract: A modular system for reclamation of a fluid includes a cavitation reactor operative to mechanically oxide the fluid and an ion precipitation system that receives the oxidized fluid from the cavitation reactor and thereafter introduces one or more ions at various locations to initiate precipitation of select materials. The system and associated methodology further includes injecting dissolved air and emulsion breaking chemistry into the fluid before cavitation, coalescing emulsified particulates from the fluid and saturating the fluid in an air saturation chamber that is operable to form a microbial filter.
    Type: Application
    Filed: May 30, 2013
    Publication date: December 5, 2013
    Inventor: David Bower
  • Patent number: 8597521
    Abstract: This invention relates to a method for selective removal of silica and silicon containing compounds from solutions that include silica and silicon containing compounds, including geothermal brines.
    Type: Grant
    Filed: June 24, 2010
    Date of Patent: December 3, 2013
    Assignee: Simbol Inc.
    Inventor: Stephen Harrison
  • Patent number: 8580122
    Abstract: A hybrid chemical/mechanical water treatment plant and method employing rapid sulfur dioxide chemical disinfection and dewatering technology in conjunction with lime and oxidization/reduction agents to removal pharmaceuticals and personal care products from waters to meet operating constraints and environmental permitting restrictions and siting limitations for water treatment.
    Type: Grant
    Filed: May 19, 2011
    Date of Patent: November 12, 2013
    Assignee: Earth Renaissance Technologies, LLC
    Inventor: Marcus G. Theodore
  • Publication number: 20130284678
    Abstract: An apparatus and methods for measuring the concentration of an additive are disclosed. The apparatus comprises a treatment stream (1) and a dosing stream (2). An additive is added to the dosing stream using a metering device (3). In some embodiments, the dosing stream is mixed after adding the additive using a first mixing device (4). Downstream from the metering device and the mixing device, the concentration of the additive in the dosing stream is measured using a monitor flow cell (5). In some embodiments, the dosing stream and treatment stream are combined (6) and mixed using a second mixing device (7). The concentration of the additive in the treatment stream can be calculated as a function of the volumetric flow rate ratio of the dosing stream to the treatment stream and the measured concentration of the additive in the dosing stream.
    Type: Application
    Filed: December 14, 2011
    Publication date: October 31, 2013
    Inventors: Luke J. Daly, Craig S. Alig
  • Publication number: 20130270189
    Abstract: Systems and methods for treating contaminated impound water are disclosed which include a pretreatment stage wherein contaminated water is oxidized, pH adjusted, treated with a coagulant, and treated with a polymer to form a flocculent comprising bulk solids and fine particles. The oxidizing step may include two or more stages, one of which is a treatment with ferrous iron generated from iron filings or steel wool. Bulk solids are removed, and the liquid portion containing fine particles is applied to a low pressure microfiltration unit to remove the fine particles resulting in a microfilter effluent. The microfilter effluent may be directly fed to a reverse osmosis (R/O) unit. The R/O reject may be recycled to another R/O unit (second pass). The R/O permeate may be blended as needed with the microfiltration effluent to provide the final discharge effluent with reduced contaminant levels and maximized throughput.
    Type: Application
    Filed: March 15, 2013
    Publication date: October 17, 2013
    Applicant: WATER SOLUTIONS, INC.
    Inventor: Stephen D. Allen
  • Patent number: 8557118
    Abstract: In one embodiment, a grey water treatment system includes an oxidation reactor for oxidizing grey water. The grey water treatment system also includes a biological reduction and precipitation system with microbes designed to remove one or more target components from the oxidized grey water.
    Type: Grant
    Filed: February 2, 2010
    Date of Patent: October 15, 2013
    Assignee: General Electric Company
    Inventors: James Scott Kain, Dinh-Cuong Vuong, David Brian Fraser, Timothy Michael Pickett
  • Publication number: 20130248456
    Abstract: Disclosed is an improved water treatment process that operates on a continuous flow of fluids that are subjected to hydrodynamic waves, acoustic ultrasonic waves in combination with injected ozone and electro chemical treatment. The treatment system provides a cost efficient and environmentally friendly process and apparatus for cleaning and recycling fluids as contaminated as coal slurry, as well as other types of fluids having various levels of contaminants such as aerobic and anaerobic bacteria and suspended solids. The volatile organic compounds are reduced to an acceptable level without the use of acids, ion exchange materials, or anti scaling chemicals which is of economical and environmental significance and benefit.
    Type: Application
    Filed: December 6, 2012
    Publication date: September 26, 2013
    Inventor: Dennis McGuire
  • Patent number: 8529155
    Abstract: The present invention relates to a method for making pure salt comprises recapturing post-drilling flowback water from hydro-fracturing; removing oil from the flowback water; filtering the flowback water using an ultra filter with a pore size of about 0.1 microns or less to remove solid particulates and large organic molecules, such as benzene, ethylbenzene, toluene, and xylene, from the water; concentrating the flowback water to produce a brine that contains from about 15 wt % to about 40 wt % of salt relative to the total weight of the flowback brine; performing one or more chemical precipitation process using an effective amount of reagents to precipitate out the desired high quality commercial products, such as, barium sulfate, strontium carbonate, calcium carbonate; and crystallizing the chemically treated and concentrated flowback brine to produce greater than 99.5% pure salt products, such as sodium and calcium chloride.
    Type: Grant
    Filed: March 15, 2012
    Date of Patent: September 10, 2013
    Assignee: FracPure Holdings LLC
    Inventors: Frank A. DiTommaso, Peter N. DiTommaso
  • Patent number: 8518269
    Abstract: A low cost method and system for treating water, which will be used in an industrial process, is provided. A system of the invention generally includes at least one containing means, at least one coordination means, at least one chemical application means, at least one mobile suction means, and at least one filtration means. The coordination means can control the necessary processes depending on the system needs (e.g., water quality or purity). The method and system of the invention purifies the water and eliminates suspended solids without the need of filtering the totality of the water volume, but only filtering a small fraction of up to 200 times less than the flow filtered by a conventional water treatment filtration system.
    Type: Grant
    Filed: August 1, 2011
    Date of Patent: August 27, 2013
    Assignee: Crystal Lagoons (Curacao) B.V.
    Inventor: Fernando Fischmann T.