Utilizing Aluminum, Calcium, Or Iron Containing Agent Patents (Class 210/667)
  • Patent number: 10675592
    Abstract: An acid mine drainage (AMD) treatment means comprising polyethersulfone (PES) having dispersed therein hydroxy-sodalite (H-SOD) so as to form a membrane is described. The PES-H-SOD membrane is suitable for treatment of acid mine drainage (AMD) by providing a filtration means to remove toxic chemicals, including but not limited to heavy metals. The invention extends to a method of manufacturing the acid mine drainage (AMD) treatment means.
    Type: Grant
    Filed: May 30, 2016
    Date of Patent: June 9, 2020
    Assignee: University of the Witwatersrand, Johannesburg
    Inventors: Michael Olawale Daramola, Bongile Silinda, Sandile Aubrey Masondo
  • Patent number: 10065872
    Abstract: The invention relates to a process for the purification of water and/or dewatering of sludges and/or sediments, to the use of a combination of a phyllosilicate and a surface-treated calcium carbonate for water purification and/or dewatering of sludges and/or sediments, as well as to the use of a combination of a phyllosilicate and a surface-treated calcium carbonate for reducing the amount of polymeric flocculation aids in water and/or sludges and/or sediments and to a composite material comprising at least one surface-treated calcium carbonate, at least one phyllosilicate and impurities originated from different sources obtainable by said process.
    Type: Grant
    Filed: April 14, 2014
    Date of Patent: September 4, 2018
    Assignee: Omya International AG
    Inventors: Daniel Edward Gerard, Martine Poffet, Joachim Schoelkopf, Michael Skovby, Patrick Arthur Charles Gane
  • Patent number: 10046990
    Abstract: The invention is directed to an apparatus and methods of its use to generate chlorine dioxide. The apparatus comprises three cation exchange resin chambers in fluidic communication to convert chlorite salt into chlorine dioxide. Unlike previous converters, the invention utilizes an novel method of acidifying some of the chlorite to produce a more effective process. The invention can achieve a 100% theoretical yield which is s significant improvement over the 80% theoretical yield in previous attempts using non-acidifying chemistry. The method also avoids the need for expensive catalysts.
    Type: Grant
    Filed: June 6, 2011
    Date of Patent: August 14, 2018
    Assignee: Ecolab USA Inc.
    Inventor: Felice DiMascio
  • Patent number: 9410101
    Abstract: A process is disclosed for obtaining energy from organic-containing waste materials by (1) precomminuting the waste material and determining its ratio of carbonaceous material and silicatic material; (2) further measuring the constituents in the waste material to determine the ratio of carbonaceous material and silicatic material; (3) maintaining the ratio of carbonaceous material and silicatic material at about 90% to 10%; (4) adding phyllosilicate to the waste material, separating the resulting mixture into solid, liquid and gaseous phases, and pelletizing the solid phase; (5) pyrrolizing the pellets forming a second gaseous phase and a second solids phase; and (6) supplying the second gaseous phase to a tank, and separating the second solids phase into end product carbonaceous and silicatic materials, and recovering the carbonaceous materials.
    Type: Grant
    Filed: December 20, 2012
    Date of Patent: August 9, 2016
    Assignee: COMMERZIALBANK MATTERSBURG IM BURGENLAND AKTIENGESELLSCHAFT
    Inventor: Franz Josef Philipp
  • Patent number: 9388061
    Abstract: A metalloid contaminated liquid water solution purification process providing decrease to safe human consumption-rated levels of metalloid concentration therein, by precipitation without oxidation and without liquid water heating. The process comprises the following steps: injecting a ferric iron coagulant; injection of lime in the liquid solution; precipitating the metalloid; separating the resulting slurry between a liquid and a solid phase, wherein a clarified water solution is obtained; wherein the liquid phase of the solution is economically reclaimed, while the solid phase slurry is disposed of.
    Type: Grant
    Filed: June 26, 2013
    Date of Patent: July 12, 2016
    Assignee: Veolia Water Solutions & Technologies Support
    Inventor: Marc Laliberte
  • Patent number: 9254582
    Abstract: The present invention provides a process for producing granular material useful as a phosphorus removal aggregate and involves the mixing of a pulverized calcium or magnesium oxide material with a dewatered clay waste material in a paddle or ribbon type mixer until reaching a state of a uniform consistency paste like material and then allowing such material to cure for several days while periodically mixing to expose new surface area thereof to the air to facilitate evaporation until the water content of the cured material is less than six percent.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: February 9, 2016
    Assignee: CleanWater Technologies, LLC
    Inventor: Donald Allen Luke
  • Patent number: 9214248
    Abstract: The present invention relates to a method of capturing radioactive species in an aqueous solution and removing the radioactive species for disposal. The method includes the steps of providing a macroporous bead form sequestration resin including a sequestration ligand coupled to a sulfonic acid based polymer resin, subjecting the bead form sequestration resin to radioactive species contained in the aqueous solution to allow the bead form sequestration resin to capture the radioactive species; using an acid to lower a pH of the resin to release the radioactive species; and disposing the radioactive species in a radioactive storage facility.
    Type: Grant
    Filed: November 23, 2011
    Date of Patent: December 15, 2015
    Assignee: Electric Power Research Institute, Inc.
    Inventors: Paul L. Frattini, Roger Howard Asay, Keith Paul Fruzzetti, Susan Elaine Garcia, Leon Yengoyan, Lisa Maxine Edwards
  • Patent number: 9139460
    Abstract: A method of deactivating biomass is set forth. The method includes two stages, a disrupting stage and a rupture stage. The disrupting stage includes the steps of injecting an oxidizer gas into the biomass with minimal or significant elevated pressure and then a depressurizing of the biomass. The steps cause a disruption of cellular membranes of cells present in the biomass. The rupture stage includes the step of injecting the biomass with a rupture gas sufficient to pressurize the biomass to a second elevated pressure following by the depressurizing of the biomass. The injecting and depressurizing steps of the rupture stage can be repeated at least two times in order to rupture the cell membranes and expose residual cell contents.
    Type: Grant
    Filed: March 23, 2011
    Date of Patent: September 22, 2015
    Assignee: University of Utah Research Foundation
    Inventor: P. K. Andy Hong
  • Patent number: 8974672
    Abstract: A self-contained water polishing system includes at least a first containment basin that has an inlet for inflow of water from a collection source and contains calcium carbonate for treatment of water flowing through the system; at least a first polishing basin in communication with the containment basin and that contains at least a first pollutant collection substrate for treatment of water flowing through the system; and a vacuum pumping system in fluid communication with the containment and polishing basins that draws water through the polishing system.
    Type: Grant
    Filed: August 26, 2011
    Date of Patent: March 10, 2015
    Assignee: Wasserwerk, Inc.
    Inventor: Wayne R. Hawks
  • Publication number: 20150053619
    Abstract: Both the hardness and boron content of wastewater may be reduced by contacting the wastewater with liquid sodium silicate (LSS) in an effective amount for such reductions followed by one or both of two additional procedures. The additional procedure may be contacting the wastewater with an Al(3+)-containing compound in an amount effective to at least partially remove silicon from the wastewater, where the contacting is before, during or after the wastewater is contacted with LSS. The second additional or alternative procedure involves, subsequent to contacting the wastewater with LSS, treating the untreated water with an electrocoagulation (EC) apparatus for a period of time effective to at least partially remove silicon from the wastewater. The EC procedure may also further remove boron from the wastewater.
    Type: Application
    Filed: August 21, 2013
    Publication date: February 26, 2015
    Applicant: Baker Hughes Incorporated
    Inventors: Jiasheng Cao, Daryl D. McCracken, Evan Kent Dawson
  • Publication number: 20140367335
    Abstract: The invention is directed to a method for the removal of mercury and selenium from sulfate-containing waste water. The method may include the following steps: a) a mercury- and selenium-contaminated waste water with a known sulfate concentration is provided, b) barium sulfate (BaSO4) is precipitated from the provided waste water by the addition of a predefined amount of Ba2+ ions to the waste water, c) BaSO4 (if necessary together with other solids) is separated obtaining a low-solid waste water, d) the low-solid waste water is fed to an ion exchanger for the removal of mercury obtaining a waste water with a reduced mercury content, e) selenium and/or selenium compounds are removed from the waste water with the reduced mercury content and f) a sulfate-containing solution or solid is added to the waste water with a reduced selenium and/or selenium compound content in order to precipitate barium sulfate.
    Type: Application
    Filed: June 13, 2014
    Publication date: December 18, 2014
    Inventors: Luis Fernando Piedra-Garza, Thomas Lauer, Magdalena Hilger
  • Publication number: 20140319059
    Abstract: Provided herein is a method for reducing down-time in a recreational body of water having a water filtering system and water recirculation system after a potential release of Cryptospridium oocyst and/or Giardia cysts. Also described is a kit for practicing the method for reducing down-time in a recreational body of water that may have a potential release of Cryptospridium oocyst and/or Giardia cysts.
    Type: Application
    Filed: April 25, 2014
    Publication date: October 30, 2014
    Inventor: Michael Joseph Unhoch
  • Publication number: 20140263072
    Abstract: A process for removing suspended particles and at least one ionic species from a feed water stream to produce a product water stream, the process includes the steps of forming agglomerates of the suspended particles in the feed water stream; passing the feed water stream containing agglomerated particles through a bed of particulate sorbent material so as to sorb the ionic species from the feed water onto the sorbent to provide a loaded sorbent and filter the agglomerated particles from the feed water using the bed of particulate sorbent material as a filtration medium to load the bed with the agglomerated particles, and thereby produce the product water stream; removing the filtered particles and the ionic species from the filtration medium; and re-using the regenerated sorbent in step b).
    Type: Application
    Filed: May 29, 2014
    Publication date: September 18, 2014
    Applicant: Clean TeQ Holdings Ltd.
    Inventors: Peter Voigt, Nikolai Zontov, John Carr
  • Publication number: 20140251914
    Abstract: A process for treating acid mine drainage containing heavy and base metals and soluble contaminants is provided. In one embodiment, at least a metal cation is added to the acid mine drainage at a pre-select pH to form insoluble heavy and base metal complexes. After the removal of the heavy and base metal complexes, the pH is raised to the alkaline range. Following removal of base metal hydroxides and gypsum, membrane filtration is employed to generate a treated membrane permeate having a reduced concentration of heavy and base metals and soluble contaminants, and a membrane reject stream containing a concentrated brine. The concentrated brine is further treated with additional lime and at least an aluminum salt to remove remaining soluble contaminants, thus producing a treated water stream with reduced levels of contaminants. Carbonation with CO2 is employed at the end of the process to neutralize flows and further precipitate residual aluminum and calcium salts.
    Type: Application
    Filed: March 7, 2013
    Publication date: September 11, 2014
    Inventors: Brandon Ryan Ball, Rahul Shankar Bhaduri, Derek Anderson Eggert, Prakhar Prakash
  • Publication number: 20140246371
    Abstract: A process for removing sulfate includes combining a calcium compound and a fluid comprising sulfate to form a composition; adjusting the pH to be greater than or equal to 12; introducing, to the composition, an electrode comprising aluminum or a noble metal; contacting the composition with a material comprising aluminum if aluminum is absent from the electrode; applying a voltage to the electrode to oxidize the aluminum and to form aluminum ions; contacting the composition with the aluminum ions; and forming a precipitate to remove sulfate from the composition, the precipitate having a crystal structure including calcium, aluminum, and sulfate.
    Type: Application
    Filed: March 1, 2013
    Publication date: September 4, 2014
    Applicant: Baker Hughes Incorporated
    Inventors: Jiasheng Cao, Ronald M. Matherly, Daryl D. McCracken, Evan K. Dawson, Kushal Seth
  • Publication number: 20140175015
    Abstract: A water purification method comprising adding a purification agent to water having a contaminant concentration of 1 ?g/L to 10 g/L, the purification agent containing an adsorbent having an average particle size of 100 nm to 500 ?m, an iron-based flocculant, and an alkaline substance; causing the adsorbent to adsorb at least a part of the contaminants in water; settling the adsorbent with the adsorbed contaminants by the iron-based flocculant; and removing the sediment from water, wherein the purification agent is added in an amount of 0.01 g to 20 g per liter of water, can purify contaminated water conveniently and efficiently.
    Type: Application
    Filed: December 19, 2013
    Publication date: June 26, 2014
    Applicant: FUJIFILM Corporation
    Inventor: Taisei NISHIMI
  • Publication number: 20140124447
    Abstract: Described are chemical formulations that remove heavy metals from waste solutions containing a chelating agent. Also disclosed are methods for removing heavy metals from waste solutions utilizing such chemical formulations.
    Type: Application
    Filed: November 5, 2013
    Publication date: May 8, 2014
    Applicant: THATCHER COMPANY
    Inventors: Mark A. ROSS, Jeffrey A. ZIDEK
  • Publication number: 20140116948
    Abstract: The present disclosure relates, according to some embodiments, to systems and methods for removal of contaminants from water including, but not limited to, industrial wastewater, brackish water, municipal wastewater, drinking waters, and particularly waters obtained from fracking operations.
    Type: Application
    Filed: October 31, 2013
    Publication date: May 1, 2014
    Inventor: Stanley M. MEYER
  • Patent number: 8696911
    Abstract: The invention relates to a continuous process for decontaminating a radioactive liquid effluent comprising one or more radioactive chemical elements to be removed that comprises the following steps: a step of bringing said radioactive liquid effluent into contact, in a first reactor, with solid particles capable of capturing and retaining said radioactive chemical element(s) to be removed, by means of which a suspension of solid particles containing said radioactive chemical element(s) to be removed is obtained; a step of settling said suspension, in a second reactor, by means of which a solid phase is obtained that comprises the solid particles containing said radioactive chemical element(s) to be removed and a liquid phase depleted or devoid of said radioactive chemical element(s) to be removed; a step of separating said solid phase and said liquid phase; characterized in that a portion of said solid phase obtained at the end of the settling step is reinjected into the first reactor for the implementatio
    Type: Grant
    Filed: February 17, 2009
    Date of Patent: April 15, 2014
    Assignee: Commissariat a l'Energie Atomique et aux Energies Alternatives
    Inventors: Vincent Pacary, Yves Barre, Edouard Plasari
  • Patent number: 8673152
    Abstract: Wastewater treatment systems, methods and apparatus for polishing a wastewater stream comprising a plurality of contaminants are provided. One system includes a vessel containing a plurality of natural media filtration agents selected to remove selected ones of the plurality of contaminants from the wastewater stream. In one embodiment, the vessel includes a bed of bauxite residue and at least one other natural media filtration agent. In another embodiment, the vessel includes a bed of compost and at least one other natural media filtration agent. The vessel includes a wastewater inlet that is in fluid communication with one or more of the natural media filtration agents. The vessel includes a wastewater outlet that is in fluid communication with one or more of the natural media filtration agents.
    Type: Grant
    Filed: May 3, 2013
    Date of Patent: March 18, 2014
    Assignees: Alcoa Inc., Corporate Environmental Solutions LLC
    Inventors: John R. Smith, Jaw K. Fu, Rajat Ghosh, Kevin Kitzman, Jonell Kerkhoff, Robert C. Horger, Dennis L. Fulmer, Aniruddha Bhattacharyya, Andrew C. Middleton, Robin L. Weightman
  • Publication number: 20140069872
    Abstract: Method for removing molybdate from a fluid comprising contacting a fluid containing molybdate with a first reactive solid comprising zero-valent iron and one or more iron oxide minerals in contact therewith; a secondary reagent in contact with the reactive solid, wherein the secondary reagent is ferrous ion; and an added secondary solid, wherein the secondary solid comprises an iron oxide mineral.
    Type: Application
    Filed: September 13, 2013
    Publication date: March 13, 2014
    Applicant: THE TEXAS A&M UNIVERSITY SYSTEM
    Inventor: Yongheng Huang
  • 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
  • Patent number: 8663478
    Abstract: The invention relates to a method for treating water charged with colloidal impurities, either dissolved or suspended, in a treatment plant, wherein said method comprises: the step of contacting said water, in an advanced oxidation area, with hydrogen peroxide in the presence of at least one transition-metal salt; a flocculation step that comprises contacting said water, in a flocculation area, with at least one flocculation additive and with at least one ballast comprising at least one non-soluble granular material denser than water and used as a biomass carrier; the step of feeding the water and floc mixture thus obtained into a settling area; the step of separating the treated water at the upper portion of said settling area from a mixture of sludge and ballast resulting from the settling of said flocs; the step of extracting the sludge and ballast mixture at the lower portion of said settling area; and the step of recycling at least a portion of the sludge into said advanced oxidation area.
    Type: Grant
    Filed: November 27, 2008
    Date of Patent: March 4, 2014
    Assignee: Veolia Water Solutions & Technologies Support
    Inventors: Marielle Coste, Arnaud Bucaille, Sebastien Logette
  • Publication number: 20140054507
    Abstract: Processing of wet biomass feedstock by liquid-phase catalytic hydrothermal gasification must address catalyst fouling and poisoning. One solution can involve heating the wet biomass with a heating unit to a pre-treatment temperature sufficient for organic constituents in the feedstock to decompose, for precipitates of inorganic wastes to form, for preheating the wet feedstock in preparation for subsequent removal of soluble sulfate contaminants, or combinations thereof. Processing further includes reacting the soluble sulfate contaminants with cations present in the feedstock material to yield a sulfate-containing precipitate and separating the inorganic precipitates and/or the sulfate-containing precipitates out of the wet feedstock. Having removed much of the inorganic wastes and the sulfate contaminants that can cause poisoning and fouling, the wet biomass feedstock can be exposed to the heterogeneous catalyst for gasification.
    Type: Application
    Filed: October 31, 2013
    Publication date: February 27, 2014
    Applicants: GENIFUEL CORPORATION, BATTELLE MEMORIAL INSTITUTE
    Inventors: Douglas C. Elliott, James R. Oyler
  • Publication number: 20140014584
    Abstract: Embodiments of the present disclosure provide a system and method for wastewater purification. The system may include a sludge filtration unit, a screen filtration unit, a multi-media filtration unit, and a soluble hydrocarbon filtration unit. The sludge filtration unit may remove impurities from wastewater. Impurities include hydrocarbons, suspended solids, and/or dissolved solids. The screen filtration unit may remove impurities from the wastewater. The multi-media filtration unit may remove impurities from the wastewater. The soluble hydrocarbon filtration unit may remove impurities from the wastewater.
    Type: Application
    Filed: April 22, 2010
    Publication date: January 16, 2014
    Inventors: Steven Wayne Cone, Robert Wayne Hayes
  • Publication number: 20140014586
    Abstract: The present invention provides systems and methods for removing an oxidizable target contaminant from a fluid, and methods for their use. In embodiments, these systems and methods include an oxidizing agent, wherein adding the oxidizing agent to the oxidizable target contaminant forms an oxidized species that precipitates as an insoluble precipitate in the fluid; a substrate that forms a removable complex with the insoluble precipitate, thereby sequestering the oxidizable contaminant, and a removal system for removing the removable complex from the fluid.
    Type: Application
    Filed: December 13, 2012
    Publication date: January 16, 2014
    Inventors: David S. Soane, Robert P. Mahoney, Ian Slattery
  • Publication number: 20140001120
    Abstract: In an apparatus for treating wastewater, e.g sewage water, the water passes through a standard treatment process stream to promote production of dissolved reactive phosphate ions (PO4). Iron (or aluminum) ions are generated by electrochemical means and added to the process stream at one or more locations to produce metal-P coagulant solids removed in part by pump-out, with the substantial remaining P removed by mineralization and filtration in a biological filter such as a sand filter or leach field. In another apparatus, the water passes through a standard aerobic treatment process stream to promote production of dissolved reactive phosphate ions. Iron (or aluminum) ions are generated by electrochemical means and added to the process stream at one or more locations to produce a flocculant of Fe—P minerals that are separated out by sedimentation, physical filtration or magnetic means.
    Type: Application
    Filed: June 28, 2013
    Publication date: January 2, 2014
    Applicant: ROWANWOOD IP INC.
    Inventors: E. Craig JOWETT, Yanqing Xu
  • Publication number: 20130292335
    Abstract: The present invention provides processes for removing nitrogen species from fresh water or high salinity water recirculated aquaculture systems. The processes are based on physico-chemical treatments which are performed at ambient temperatures and at low p H values thus keeping the total ammonia nitrogen concentrations below a value which is considered detrimental for the growth or survival rate of cultured fish/shrimp.
    Type: Application
    Filed: November 17, 2011
    Publication date: November 7, 2013
    Inventors: Ori Lahav, Youri Gendel, Noam Mozes, Ayana Benet Perlberg, Yuri Hanin
  • Publication number: 20130118985
    Abstract: A method for removing heavy metals from contaminated water, comprising collecting metal salt precipitates from a water softening process, drying said precipitates, contacting water having a concentration of one or more heavy metals with said precipitates, and collecting water having a reduced concentration of said heavy metal(s).
    Type: Application
    Filed: January 2, 2013
    Publication date: May 16, 2013
    Applicant: KING ABDULAZIZ CITY FOR SCIENCE AND TECHNOLOGY
    Inventor: King Abdulaziz City for Science and Technology
  • Patent number: 8361342
    Abstract: The present invention relates to a compacted solid product for water purification comprising:—at least a first layer comprising at least a coagulant/flocculant system comprising at least one polyvalent inorganic salt, at least one water-soluble cationic polymer and at least one high-molecular-weight anionic polymer,—at least a second layer comprising at least one disinfectant that releases active chlorine on contact with water, characterized in that said coagulant/flocculant system moreover comprises a sodium alginate. The invention also relates to the method for preparing such a product.
    Type: Grant
    Filed: October 4, 2007
    Date of Patent: January 29, 2013
    Assignee: Eurotab
    Inventors: Paul Branlard, Gilles Rubinstenn
  • Publication number: 20120318743
    Abstract: The invention comprises water desalination methods and a system for such, which includes treatment of water in cation and anion ion exchange columns, and regenerating the columns after treatment of the water to set them up again for a further treatment cycle, and also providing recoverable by-products during the regeneration of the ion exchange columns instead of waste.
    Type: Application
    Filed: February 23, 2011
    Publication date: December 20, 2012
    Inventor: Ockert Tobias Van Niekerk
  • Patent number: 8236180
    Abstract: Disclosed is a boron adsorbent having an excellent adsorbing ability against boron contained in a solution, which is inexpensive and has high general versatility. Also disclosed is a boron removal method which can remove boron efficiently in a simple manner. An amide derivative represented by the general formula (1) is added to a boron-containing water under alkaline conditions to cause the adsorption of boron to the amide derivative. Then, a cation source having two or more valencies is added to the water to cause the aggregation of the amide body. The aggregated amide body is removed from the water. In the general formula (1), m represents 1 or 2; X represents —CH2OH, —CHO or —COOH; n represents an integer of 2 to 5; X are independent from each other and n are independent from each other when m represents 2; and Y represents a monovalent hydrocarbon group having 6 to 16 carbon atoms when m is 1, and represents a divalent hydrocarbon group having 8 to 18 carbon atoms when m is 2.
    Type: Grant
    Filed: May 21, 2008
    Date of Patent: August 7, 2012
    Assignee: Kowa Company, Ltd.
    Inventor: Katsumi Yabusaki
  • Publication number: 20120193293
    Abstract: Disclosed is a wastewater treatment method such that, after iron tetrachloride is added to wastewater containing arsenic and vanadium so as to make the molar ratio of the iron to arsenic in this wastewater 20 and iron tetrachloride is added to this wastewater so as to make the molar ratio of iron to vanadium 10-80, the pH is adjusted to 5.8-8.6, and solid-liquid separation is carried out.
    Type: Application
    Filed: January 20, 2011
    Publication date: August 2, 2012
    Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventor: Yoshiaki Obayashi
  • Publication number: 20120160770
    Abstract: A method of reducing a sulfate concentration in wastewater comprises directing the wastewater stream to a precipitation reactor and mixing the wastewater stream with a calcium source and a calcium salt seed material to precipitate calcium sulfate. The precipitated calcium sulfate is then separated from a treated effluent and directed to a settling tank where the precipitated calcium sulfate is separated into heavier calcium sulfate precipitants and lighter calcium sulfate precipitants. The heavier calcium sulfate precipitants and the lighter calcium sulfate precipitants are separately recirculated to the precipitation reactor. A predetermined mass ratio of solids is maintained in the precipitation reactor.
    Type: Application
    Filed: June 23, 2011
    Publication date: June 28, 2012
    Applicant: VEOLIA WATER SOLUTIONS & TECHNOLOGIES SUPPORT
    Inventors: Kashi Banerjee, Charles D. Blumenschein, Robert G. Cook, John C. Schrader
  • Publication number: 20120097614
    Abstract: A method for treating low barium frac water includes contacting a frac water stream with a radium selective complexing resin to produce a low radium stream, passing the low radium stream through a thermal brine concentrator to produce a concentrated brine; and passing the concentrated brine through a thermal crystallizer to yield road salt.
    Type: Application
    Filed: July 25, 2011
    Publication date: April 26, 2012
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: James Manio Silva, Hope Matis, William Leonard Kostedt, IV
  • Publication number: 20120018383
    Abstract: The disclosure relates generally to the use of zeolite to assist in dispersion of components in aqueous mineral slurries to release and separate individual components of the slurry, which may then be recovered from the slurry and, in particular, to the use of zeolite in the recovery of bitumen from an oil sands slurry, water recovery from the slurry, and the subsequent consolidation of residual mineral solids.
    Type: Application
    Filed: January 28, 2010
    Publication date: January 26, 2012
    Applicant: Sortwell & Co.
    Inventor: Edwin T. Sortwell
  • Patent number: 8088710
    Abstract: The present invention is directed to a method of preparing compositions enriched in compounds containing carbon chains of varying degrees of unsaturation using argentation chromatography. The present method utilizes an argentized cationic resin or a conditioned argentized alumina to separate compounds containing saturated or mono-unsaturated carbon chains from compounds having polyunsaturated carbon chains present in a starting composition. The invention is particularly useful for preparing a composition enriched in polyunsaturated fatty acid alkyl esters from mixtures of fatty acid esters in a starting composition derived from vegetable oils. The present invention is also directed to a method of preparing a conditioned argentized alumina adsorbent having increased selectivity for compounds containing one or more polyunsaturated carbon chains.
    Type: Grant
    Filed: December 16, 2009
    Date of Patent: January 3, 2012
    Assignee: Archer Daniels Midland Company
    Inventors: Thomas P. Binder, Doug Geier, Ahmad K. Hilaly, Robert D. Sandage, John G. Soper
  • Patent number: 8080163
    Abstract: Exemplary systems and methods for treating contaminated water are described. In one instance a method supplies metal salt reagents to a moving media filter in the presence of contaminated water. The method also introduces a waste stream resulting from the moving media filter upstream of the moving media filter effective to lower an average contaminant concentration of effluent water from the moving media filter.
    Type: Grant
    Filed: January 26, 2007
    Date of Patent: December 20, 2011
    Assignees: Blue Water Technologies, Inc., Idaho Research Foundation, Inc.
    Inventors: Gregory Moller, Remembrance Newcombe
  • Patent number: 8066884
    Abstract: The present invention relates to a process for the purification of water by adding surface-reacted natural calcium carbonate or an aqueous suspension comprising surface-reacted calcium carbonate and having a pH greater than 6.0 measured at 20° C., to the medium, wherein the surface-reacted calcium carbonate is a reaction product of natural calcium carbonate with carbon dioxide and one or more acids and the use of the surface-reacted natural calcium carbonate for this process.
    Type: Grant
    Filed: March 19, 2008
    Date of Patent: November 29, 2011
    Assignee: Omya Development AG
    Inventors: Patrick A. C. Gane, Joachim Schōlkopf, Daniel Gantenbein
  • Patent number: 8057683
    Abstract: The present invention relates to the removal of endocrine disrupting compounds from an aqueous medium by adding surface-reacted natural calcium carbonate or an aqueous suspension comprising surface-reacted calcium carbonate and having a pH greater than 6.0 measured at 20° C., to the medium, wherein the surface-reacted calcium carbonate is a reaction product of natural calcium carbonate with carbon dioxide and one or more acids, the use of the surface-reacted natural calcium carbonate for the removal of endocrine disrupting compounds, as well as to a combination of a surface-reacted natural calcium carbonate and activated carbon for the removal of endocrine disrupting compounds.
    Type: Grant
    Filed: March 19, 2008
    Date of Patent: November 15, 2011
    Assignee: Omya Development AG
    Inventors: Patrick A. C. Gane, Joachim Schölkopf, Daniel Gantenbein, Daniel E. Gerard
  • Patent number: 8017018
    Abstract: A phosphorus removal system is operable to remove phosphorus from an influent. The system includes a first section receiving the influent and discharging a first flow. A first coagulant inlet is positioned upstream of the first section and is in fluid communication with the influent to introduce a first coagulant selected to precipitate phosphorus. A second section receives the first flow and discharges a second flow, and a third section receives the second flow and discharges an effluent. A second coagulant inlet is positioned downstream of the first section and upstream of the third section to introduce a second coagulant selected to precipitate phosphorus.
    Type: Grant
    Filed: November 5, 2009
    Date of Patent: September 13, 2011
    Assignee: Siemens Industry, Inc.
    Inventors: Eric Allen Lawrence, Joseph E. Zuback
  • Patent number: 7967988
    Abstract: A method and a apparatus for treating a liquid volume containing latex waste, the method comprising providing a treatment apparatus comprising at least a first vessel, and a filtration system in liquid communication with the first vessel; delivering a portion of the liquid containing waste latex to the first vessel; adding a first reagent to the portion of liquid containing waste latex to cause the formation of waste latex flocs of a first size; adding a second reagent to the portion of liquid containing waste latex to cause growth of the waste latex flocs of the first size into separable waste latex flocs; separating the separable waste latex flocs within the filtration system into a waste latex sludge and a first filtrate; and dewatering the waste latex sludge to produce a waste latex solid and a second filtrate. The filtrates may be reusable in a latex manufacturing process.
    Type: Grant
    Filed: January 2, 2008
    Date of Patent: June 28, 2011
    Assignee: Innovative Environmental Products, Inc.
    Inventor: Francis C. Miller
  • Publication number: 20110127220
    Abstract: The invention relates to a method for treating water charged with colloidal impurities, either dissolved or suspended, in a treatment plant, wherein said method comprises: the step of contacting said water, in an advanced oxidation area, with hydrogen peroxide in the presence of at least one transition-metal salt; a flocculation step that comprises contacting said water, in a flocculation area, with at least one flocculation additive and with at least one ballast comprising at least one non-soluble granular material denser than water and used as a biomass carrier; the step of feeding the water and floc mixture thus obtained into a settling area; the step of separating the treated water at the upper portion of said settling area from a mixture of sludge and ballast resulting from the settling of said flocs; the step of extracting the sludge and ballast mixture at the lower portion of said settling area; and the step of recycling at least a portion of the sludge into said advanced oxidation area.
    Type: Application
    Filed: November 27, 2008
    Publication date: June 2, 2011
    Applicant: OTV SA
    Inventors: Marielle Coste, Arnaud Bucaille, Sebastien Logette
  • Publication number: 20110100918
    Abstract: The present invention relates to a water purifier of tap water. According to the present invention, a metal having a higher ionization tendency is ionized by exposing the metal to water to be purified. The metal having a higher ionization tendency is selected based on iron (Fe) and limited to metals having a higher ionization tendency as compared with iron (Fe). Electrons generated when a metal is ionized into water react with heavy metal ions that have already existed in the water to reduce the heavy metal ions. The heavy metal ions react with the electrons and are converted into heavy metal components. The heavy metals are pulled by magnets with a strong magnetism and removed from the water safely. When using a water purifier according to the present invention, users can drink water useful to the human body safely and hygienically since mineral components dissolved into water are not removed at all while removing the heavy metals although small quantities of heavy metals are dissolved into water.
    Type: Application
    Filed: August 11, 2008
    Publication date: May 5, 2011
    Inventors: Hak-Sub Shim, Duk-Soo Lee
  • Patent number: 7901582
    Abstract: A phosphorus recovery method and a phosphorus recovery system which can make equipment size small, and can be added easily also to an existing wastewater treatment facility, and can recover phosphorus by low cost, are provided. A phosphorus compound adsorption material includes a nitrogen containing compound which has an amino group at an end of molecular structure, a carrier supporting the nitrogen containing compound, and zinc ion or iron ion fixed to the nitrogen containing compound. After passing water to be treated containing phosphorus to an adsorption tower filled up with this phosphorus compound adsorption material to make phosphorus stick to the phosphorus compound adsorption material, a drug solution for desorption is supplied to the adsorption tower, and phosphorus is desorbed in liquid and is recovered.
    Type: Grant
    Filed: March 18, 2009
    Date of Patent: March 8, 2011
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Hidetake Shiire, Nobuyuki Ashikaga, Satoshi Haraguchi, Tokusuke Hayami, Tatsuoki Kono, Akiko Suzuki, Shinetsu Fujieda, Katsuya Yamamoto
  • Patent number: 7892435
    Abstract: Systems and methods are disclosed that promote the remediation of contaminated materials that are produced during industrial processes. These systems and methods include heating a material, transferring heat from the material to an industrial process. During this transfer, contaminants may be introduced into the material. These methods may remove the contaminant by treating the material with a surface modified nanoceramic through nanofiltration and/or active sites adsorption/reaction. The surface modified nanoceramic may remove at least part of the contaminant in the material. No cooling required prior to removing the contaminant from the material, which can lead to great energy saving and pollution reduction.
    Type: Grant
    Filed: May 21, 2008
    Date of Patent: February 22, 2011
    Assignee: Honeywell International Inc.
    Inventors: Tao Pan, Weijun-William Wang, Linan Zhao, Hongda Li
  • Publication number: 20110036772
    Abstract: A process for removing phosphorus from wastewater wherein an iron or aluminum salt is added to the wastewater. The iron or aluminum salt results in the precipitation of certain iron or aluminum species that include phosphorus adsorption sites. These iron or phosphorus species are settled and become a part of sludge produced in the course of the wastewater treatment process. By recycling substantial portions of the sludge, the concentration of these iron or aluminum species in the wastewater is increased. This increased concentration results in the presence of large quantities of unused phosphorus adsorption sites that attract and adsorb phosphorus, resulting in phosphorus being removed from the wastewater.
    Type: Application
    Filed: October 26, 2010
    Publication date: February 17, 2011
    Applicant: I. KRUGER INC.
    Inventors: Kashi Banerjee, Charles D. Blumenschein, John Charles Schrader
  • Publication number: 20110023715
    Abstract: A method or process for treating wastewater containing high organics, silica, boron, hardness, and suspended and dissolved solids. The method includes degasifying the wastewater for the removal of dissolved gases and thereafter chemically softening the wastewater. After the chemical softening step, the wastewater is directed through a media filter or membrane which removes additional solids and precipitants. Thereafter the wastewater is directed through a sodium ion exchange that further softens the wastewater. The effluent from the ion exchange is directed through a cartridge filter and the effluent from the cartridge filter is directed through one or more reverse osmosis units. At a selected phase of the process, prior to the wastewater reaching the reverse osmosis unit or units, the pH of the wastewater is raised and maintained such that the pH of the wastewater reaching a reverse osmosis unit is at a pH greater than 10.5.
    Type: Application
    Filed: October 14, 2010
    Publication date: February 3, 2011
    Applicant: VEOLIA WATER SOLUTIONS & TECHNOLOGIES SUPPORT
    Inventor: LNSP Nagghappan
  • Patent number: 7850854
    Abstract: A method and apparatus for adsorbing perchlorate in a fluid and successively destroying it. Perchlorate in the fluid is removed by adsorption on an adsorbent in a column. The adsorbent is then regenerated by desorbing perchlorate, and the perchlorate in the regenerant is then chemically destroyed.
    Type: Grant
    Filed: November 6, 2007
    Date of Patent: December 14, 2010
    Assignee: PURE O TECH, Inc.
    Inventors: Mirat D. Gurol, Vladimir Zlotopolski
  • Patent number: RE44570
    Abstract: In one embodiment, a reactive filtration method includes continuously regenerating a reactive filter media while simultaneously filtering contaminants from fluid flowing through the filter media. In one embodiment, regenerating the reactive filter media comprises mixing metal granules with the filter media and agitating the mixture. In another embodiment, regenerating the reactive filter media comprises introducing a metal in the fluid flowing through the filter media and agitating the filter media. In one embodiment, a method for removing phosphorus, arsenic or a heavy metal from water includes introducing a metal salt reagent into the water at a molar ratio of 5:1 to 200:1 to the phosphorous or the arsenic in the water and passing the water through a bed of moving sand.
    Type: Grant
    Filed: May 11, 2012
    Date of Patent: November 5, 2013
    Assignee: Board of Regents of the University of Idaho
    Inventors: Gregory Moller, Kevin Marshall Brackney, Roger Alan Korus, Gerald Michael Keller, Jr., Brian Keith Hart, Remembrance Louisa Newcombe