Utilizing Precipitant, Flocculant, Or Coagulant, Each With Accelerator Or With Each Other Or Plural Precipitants, Flocculants, Or Coagulants Patents (Class 210/723)
  • Patent number: 12151960
    Abstract: A two-step process for recovering useable solids from food processing wastewater and for significantly reducing the pollutants, chemical, bacterial, and viral load. The first step is the addition of pretreatment chemicals such as metal-based coagulant, pH adjuster, oxidant or a combination thereof. The second step is pumping the chemically pretreated wastewater into a foam fractionation system where a gas is introduced into the chemically treated wastewater to create a rising foam that captures and remove solid materials from the remaining wastewater effluent. The solids are recovered for additional post-processing and the effluent is discharged for post-processing or to existing bodies of water.
    Type: Grant
    Filed: November 7, 2022
    Date of Patent: November 26, 2024
    Assignee: AQUA-TERRA CONSULTANTS
    Inventor: Alan Ismond
  • Patent number: 12054400
    Abstract: Methods for making a sulfated polyaluminum chloride (PACS) flocculating agent solution, which may be aqueous, include neutralizing an aqueous sulfate-containing aluminum compound with an aqueous base to produce an aluminum hydroxide precipitate dispersed in a liquid, settling the aluminum hydroxide precipitate to create a supernatant liquid, removing an amount of the supernatant liquid to leave a remainder that contributes a selected concentration of sulfate to the PACS, and bringing the precipitate back into solution thereby forming the PACS flocculating agent.
    Type: Grant
    Filed: June 12, 2015
    Date of Patent: August 6, 2024
    Inventors: Michael R. Oldfield, Peter A. Bertasi, Brian C. Reed, Waldo Miller, Keith Braud
  • Patent number: 11953512
    Abstract: An intelligent experimental device for collaborative mining of associated resources includes a signal transmission mechanism, a pressure maintaining mechanism, a feeding mechanism, and a reaction mechanism. The signal transmission mechanism includes a centralized controller, an annunciator, signal receivers, a power supply, a power cord, signal transmitters, and signal sensing valves. The pressure maintaining mechanism includes ambient and axial pressure oil chambers, ambient and axial pressure pumps, ambient and axial pressure liquid distribution tanks, a comprehensive pressure distribution pipe, and hydraulic transmission pipes. The feeding mechanism includes monitoring analyzers, temperature controllers, solution transfer pipes, seepage pumps, mixture conveying pipes, a comprehensive liquid distributor, an aggregate chamber, a liquid chamber, an oil chamber, a gas chamber, a mixing chamber and an analytical purifier.
    Type: Grant
    Filed: May 19, 2022
    Date of Patent: April 9, 2024
    Assignee: ANHUI UNIVERSITY OF SCIENCE AND TECHNOLOGY
    Inventors: Tong Zhang, Xiang Yu, Yankun Ma, Yanfang Li, Liang Yuan, Zegong Liu
  • Patent number: 11919787
    Abstract: A continuous flow granular/flocculent sludge wastewater process selects for granule biomass capable of nitrogen and phosphorus removal and controls granule size and concentration of granular and flocculent sludge for optimal nutrient, organic, and solids removal in a smaller footprint. A series of biological process zones lead to a secondary clarifier. Mixed liquor sludge, preferably from an aerobic zone, goes through a classifier or separator processing flow from the aerobic zone, to the secondary clarifier. In a sidestream process that can be included a portion of sludge preferably from an aerobic zone goes through a classifier or separator to selectively produce a granular-rich effluent, and the clarifier may also have a separator to further concentrate granular biomass, most of which is cycled back to an initial multi-stage anaerobic process zone. The anaerobic zone is structured and operated to encourage growth of granules in subsequent process zones.
    Type: Grant
    Filed: August 20, 2021
    Date of Patent: March 5, 2024
    Assignee: Ovivo Inc.
    Inventors: Hiren Trivedi, John Vorwaller, Tyson Beaman, Sophia Baker, Sergio Pino-Jelcic, David Stensel
  • Patent number: 11873238
    Abstract: A mineral recovery system for use in a mining operation is described. The mineral recovery system a thickener includes a process water input, an underflow output having an underflow controller configured to adjust outflow of thickened slurry from the thickener, an overflow output configured to dispense clarified water from the thickener; and a flocculant input and a flocculant dilution input, a thickener controller configured to control an operation of the thickener; and a processor executing a mining operations generated model to issue commands to the thickener controller, based on inputs of sensed conditions, wherein the mining operations model incorporates a thickener sub-model and a material sub-model, wherein the mining operations model is employed to predict a future state of a thickener based on inputs of sensed conditions in the thickener and predictions made by the thickener sub-model and the material sub-model in real time.
    Type: Grant
    Filed: November 12, 2021
    Date of Patent: January 16, 2024
    Assignee: Intellisense.Io Ltd
    Inventors: Sam Bose, Denis Rubtsov, Hugh Mcnamara, Boris Wolter, Mark De Geus
  • Patent number: 11773415
    Abstract: The present invention provides a method for efficiently producing ethanol from a lignocellulosic raw material. More specifically, the present invention provides a method for producing ethanol from a lignocellulosic raw material, which comprises a step of performing multiple parallel fermentation while continuously or intermittently adding an additional saccharification enzyme to a fermentation liquid comprising a lignocellulosic raw material, a saccharification enzyme and a yeast so that the physical property value of the fermentation liquid itself is maintained within a preset range.
    Type: Grant
    Filed: September 10, 2019
    Date of Patent: October 3, 2023
    Assignees: ENEOS Corporation, Oji Holdings Corporation
    Inventors: Yuichi Takahashi, Kohei Ide, Masahiro Niwa, Miyuki Kanezawa, Shoichi Ikemizu, Atsushi Furujo, Naoya Azumi, Akira Tsukamoto, Shingo Sekizawa
  • Patent number: 11772993
    Abstract: A system for treating metal-contaminated wastewater includes a primary treatment sub-system, a secondary treatment sub-system, and a tertiary treatment sub-system. The tertiary treatment sub-system includes a reactor tank, a source of ballast material, a source of coagulant, a solids-liquid separator, and a controller configured to recycle ballasted solids from the solids-liquid separator to the reactor tank an amount sufficient to generate metal hydroxide floc in the reactor tank to reduce a concentration of dissolved metal in the reactor tank.
    Type: Grant
    Filed: January 13, 2022
    Date of Patent: October 3, 2023
    Assignee: Evoqua Water Technologies LLC
    Inventors: Rohan Wikramanayake, Raymond G. Pepin, Thomas Miles
  • Patent number: 11661360
    Abstract: A system comprising an agitation and flocculation system and a particulate filter capture system, and optionally a feedback system and/or a water softening. The agitation and flocculation system configured to receive a contaminated aqueous stream and an anhydrite quantity, and comprising means for agitating the aqueous stream and a means for mixing the aqueous stream with the anhydrite, such that a precipitate of calcium sulfate hydrate+contaminant complexes is formed. Also, a system comprising a fixed-bed type cross-flow system and a particulate filter capture system, and a corresponding method of removing per- and polyfluorinated alkyl substances from the contaminated aqueous stream. The method comprising the acts of: providing an anhydrite quantity; contacting and agitating the anhydrite quantity with a contaminated aqueous stream; and collecting the precipitate of calcium sulfate hydrate+contaminant complexes formed from the aqueous stream.
    Type: Grant
    Filed: February 23, 2021
    Date of Patent: May 30, 2023
    Assignee: WP&E TECHNOLOGIES AND SOLUTIONS, LLC
    Inventor: Harikrishnan Parthasarathy
  • Patent number: 11530148
    Abstract: Disclosed are methods of treating wastewater using a membrane bioreactor and achieving a target phosphorus concentration for the membrane permeate stream. These methods include the steps of dosing a wastewater stream with a rare earth clarifying agent and passing the dosed wastewater stream through the membrane to obtain a membrane permeate stream with a permeate concentration that is less than the phosphorus concentration of the influent stream. This permeate concentration also can be equal to or less than a target phosphorus concentration. In the methods as disclosed herein, the rare earth clarifying agent can be chloride salts of one or more rare earth elements and in certain embodiments, the rare earth clarifying agent can be CeCl3 and LaCl3.
    Type: Grant
    Filed: March 31, 2021
    Date of Patent: December 20, 2022
    Assignee: Neo Water Treatment, LLC
    Inventors: Pamela Leigh Cornish, Mason Reames Haneline
  • Patent number: 11377380
    Abstract: Compositions, systems, and methods of using alkaline-producing Aluminate salts in the sludge collection and digestion steps of wastewater processing to reduce acidity and/or build alkalinity, reduce hydrogen sulfide release, and reduce phosphate in the effluent.
    Type: Grant
    Filed: October 16, 2018
    Date of Patent: July 5, 2022
    Assignee: INLAND ENVIRONMENTAL RESOURCES, INC.
    Inventor: Douglas G. Kelley
  • Patent number: 11370749
    Abstract: The present invention relates to a method for the treatment of a suspension of solid particles in water using water-soluble (co)polymers made from the hydrated crystalline form of 2-acrylamido-2-methylpropane sulfonic acid or of at least one of the salts thereof. This method is particularly useful for treating residues resulting from the mining industry.
    Type: Grant
    Filed: March 19, 2018
    Date of Patent: June 28, 2022
    Assignee: SPCM SA
    Inventors: Cédrick Favero, Johann Kieffer, Frédéric Daguerre
  • Patent number: 11319233
    Abstract: The invention pertains to methods of reducing dissolved elements such as arsenic, selenium and mercury in aqueous solutions using, for example, various barium compounds to partition said elements to a solid phase. Such methods are particularly useful for reducing such elements at various points in coal and oil-fired power plants prior to final waste water treatment.
    Type: Grant
    Filed: August 16, 2019
    Date of Patent: May 3, 2022
    Inventor: Steven Feeney
  • Patent number: 11202974
    Abstract: A mineral recovery system for use in a mining operation is described. The mineral recovery system includes a mining operations model generated based on inputs of sensed conditions, wherein the mining operations model incorporates a thickener sub-model and a material sub-model. The mineral recovery system includes a thickener controller to issue commands based on the mining operations model. The mineral recovery system includes a thickener having a process water. The thickener also includes an underflow output provided with an underflow controller to adjust outflow of thickened slurry from the thickener based on issued commands. The thickener further includes an overflow output to dispense clarified water from the thickener.
    Type: Grant
    Filed: January 30, 2018
    Date of Patent: December 21, 2021
    Assignee: INTELLISENSE.IO LTD
    Inventors: Sam Bose, Denis Rubtsov, Hugh McNamara, Boris Wolter, Mark de Geus
  • Patent number: 11198619
    Abstract: A method for efficiently preparing ferrate based on nascent state interfacial activity. The method is as follows: (a) preparing nascent iron solution; (b) adding an oxidizing agent to the iron solution of step (a); (c) adding alkali solution or alkali particles to the mixed solution of step (b), mixing by stirring, and carrying out solid-liquid separation; (d) adding a stabilizing agent to the liquid separated out in step (c), and thus obtaining ferrate solution. The yield is 78-98%. The prepared ferrate solution is stable and can be stored for 3-15 days.
    Type: Grant
    Filed: January 17, 2019
    Date of Patent: December 14, 2021
    Assignee: Harbin Institute of Technology
    Inventors: Jun Ma, Yulei Liu, Lu Wang, Qingliang Liu, Xiaodan Zhao
  • Patent number: 11180384
    Abstract: A pulsed electromagnetic irradiation system for water treatment including raw water supply unit in fluid communication with a reaction vessel, a multimode cavity in which the reaction vessel is partially positioned. A magnetron generator is positioned adjacent the multimode cavity and is electromagnetically coupled with liquid within the reaction vessel. A stirring motor is positioned adjacent a bottom surface of multimode cavity and operatively coupled with the reaction vessel to stir the liquid within reaction vessel. A parabolic arm air cooled condenser is terminally connected to the reaction vessel to be in fluid communication with the reaction vessel. A gravity vacuum funnel, where the gravity vacuum funnel is in communication with a first air/water cooled condenser. The first air/water cooled condenser outputs fresh water to a fresh water storage unit.
    Type: Grant
    Filed: March 22, 2021
    Date of Patent: November 23, 2021
    Assignee: King Abdulaziz University
    Inventor: Iqbal Ahmed Moujdin
  • Patent number: 11130691
    Abstract: Techniques are described for preparing a water filtration composition that includes activated carbon having an ash content of at least 10 wt. % and particles of a solubilizing agent. The solubilizing agent forms a water-soluble complex with cations (e.g., calcium ions). This increases the solubility of calcium ions and other scale-forming ions in water, thus suppressing scale formation on interior surfaces of water processing infrastructure. The activated carbon and the solubilizing agent are processed to have particle sizes in a same range, thus enabling the activated carbon and the solubilizing agent to be thoroughly mixed together.
    Type: Grant
    Filed: December 5, 2018
    Date of Patent: September 28, 2021
    Assignee: Cabot Corporation
    Inventors: Mei Xin, William K. Barron, Timothy Wruble
  • Patent number: 11117841
    Abstract: Provided herein is technology relating to organic fertilizers and particularly, but not exclusively, to organic and/or biodegradable flocculants, methods of preparing organic fertilizers using an organic and/or biodegradable flocculant, and systems for treating water using an organic and/or biodegradable flocculant to prepare an organic fertilizer.
    Type: Grant
    Filed: July 23, 2019
    Date of Patent: September 14, 2021
    Assignee: S2G VENTURES FUND II, L.P.
    Inventors: Steven C. Slater, Mauricio Avila-Segura, Margaret F. Phillips, Lisa Leilani Z. Durand, Gary F. Zimmer
  • Patent number: 11034597
    Abstract: Described herein is a coagulant blend for use in SAGD water treatment systems. Specifically, a blend of high charge density polyamine and low charge density poly(diallylmethyl ammonium chloride (poly-DADMAC) is used in the warm lime softening treatment process to coagulate and flocculate solids.
    Type: Grant
    Filed: September 19, 2018
    Date of Patent: June 15, 2021
    Assignee: CONOCOPHILLIPS COMPANY
    Inventors: Lee D. Osness, Kevin Lucas, Paul Sameshima, Jason C. Grundler
  • Patent number: 10710913
    Abstract: A substrate treatment unit applies surface treatment to a semiconductor substrate by using a chemical solution. The chemical solution in which metal is dissolved by substrate treatment is discharged into a storage tank and stored. A polyacid supplying unit supplies polyacid of a deletion complex with a deficient portion into the storage tank. The polyacid of deletion complex with a deficient portion is mixed into a used chemical solution containing the metal, and a pH value of the mixed solution is adjusted to between 2 and 3 to capture the metal dissolved in the chemical solution in the deficient portion of the polyacid. In addition, a counter cation is put into the chemical solution so that the polyacid in which the metal is captured is precipitated to be separated from the chemical solution, and thus the metal contained in the chemical solution during the treatment of the semiconductor substrate can be removed to enable the chemical solution to be reclaimed.
    Type: Grant
    Filed: April 7, 2016
    Date of Patent: July 14, 2020
    Assignee: SCREEN Holdings Co., Ltd.
    Inventor: Ayumi Higuchi
  • Patent number: 10669172
    Abstract: A composition and method for dispersing sulfur, cleaning sulfur deposits, and minimizing foaming in an aqueous system is disclosed. The method may include adding a first sulfur dispersant to process water containing sulfur and dispersing the sulfur. The first sulfur dispersant may include a C5-C25 alkyl polyglycoside. A second sulfur dispersant may also be added to the process water. The second sulfur dispersant may include a polymer of acrylic acid and 2-acrylamido-2-methylpropane sulfonic acid.
    Type: Grant
    Filed: August 21, 2018
    Date of Patent: June 2, 2020
    Assignee: ECOLAB USA INC.
    Inventors: Dinesh Mantri, David Rodman, Jasbir S. Gill
  • Patent number: 10532298
    Abstract: The present disclosure relates to a method for separation of solid particles from a waterbody. Preferably, the present disclosure relates to a method, wherein a combination of chemicals including coagulant(s) and flocculant(s) are employed for said separation of solid particles, wherein suitable examples of solid particles are living organisms and non-living matter, wherein living organisms include autotrophs such as phototrophs, which are either microscopic or macroscopic in nature (algae). The disclosure thus particularly relates to method of chemical coagulation and flocculation for separating solid particles, preferably either algae or bacteria or both from a waterbody. The present disclosure also provides for an alternate method, wherein the aforesaid method of coagulation and flocculation is combined with electro-coagulation and/or pH modulation strategies for separation of said solid particles in any sequence.
    Type: Grant
    Filed: December 2, 2015
    Date of Patent: January 14, 2020
    Assignee: RELIANCE INDUSTRIES LIMITED
    Inventors: Avinash Sinha, Sairam Malladi, Ninad Pramod Gujarathi, Ashwin Govindaji Gajra
  • Patent number: 10486996
    Abstract: A mixing apparatus has a chemical moving part, a motor, a paddle, and a plate. The chemical moving part is configured to receive and output a chemical in a pipe. The motor is configured to rotatably drive a shaft coupled to the motor at a first end of the shaft. The shaft defines a central rotational axis. The paddle is connected to a second end of the shaft and configured to rotate with the shaft. The plate is configured to secure the motor to the pipe and has a first side facing the motor and a second opposite side facing a projection of the paddle. The first side defines a first length extending in a direction perpendicular to the shaft and the second side defines a second length extending in a direction perpendicular to the shaft. The first length is greater than the second length.
    Type: Grant
    Filed: March 1, 2019
    Date of Patent: November 26, 2019
    Assignee: Ecolab USA Inc.
    Inventors: Seung-Nyung Huh, Jin Nyung Huh
  • Patent number: 10238992
    Abstract: The present invention is directed to systems and methods for evaluating performance, performing process control, optimization and design of gravity separation process systems that are used to separate immiscible liquid dispersions (e.g., water-in-oil, oil-in-water mixtures) and emulsions for two-phase (liquid-liquid) or three-phase (gas-liquid-liquid) systems. According to one aspect, the design, simulation and control of such systems is performed using computational fluid dynamics (CFD) software that is configured for determining the separation efficiency of separators on the basis of the true geometry and multidimensional flow field and for a distribution of droplet sizes with the influence of the emulsion concentration on the rheology of the oil-in-water or water-in-oil dispersion.
    Type: Grant
    Filed: May 3, 2016
    Date of Patent: March 26, 2019
    Assignee: SAUDI ARABIAN OIL COMPANY
    Inventor: Olanrewaju Malcolm Oshinowo
  • Patent number: 10196279
    Abstract: A method for efficiently preparing ferrate based on nascent state interfacial activity. The method is as follows: (a) preparing nascent iron solution; (b) adding an oxidizing agent to the iron solution of step (a); (c) adding alkali solution or alkali particles to the mixed solution of step (b), mixing by stirring, and carrying out solid-liquid separation; (d) adding a stabilizing agent to the liquid separated out in step (c), and thus obtaining ferrate solution. The yield is 78-98%. The prepared ferrate solution is stable and can be stored for 3-15 days.
    Type: Grant
    Filed: January 22, 2015
    Date of Patent: February 5, 2019
    Inventors: Jun Ma, Yulei Liu, Lu Wang, Qingliang Liu, Xiaodan Zhao
  • Patent number: 9714389
    Abstract: A method of treating a first batch of oil sludge containing entrapped oil residue comprises the steps comprises the steps of bringing into contact the first batch of oil sludge to a liquid composition of an emulsion with or without a carrier, wherein the emulsion comprises an alkylpolyglucoside surfactant in 2 to 40% by weight of total composition; a co-surfactant in 1 to 30% by weight of total composition selected from the group consisting of C3 to C18 alcohols, C3 to C18 alkyl lactates, lecithins, C3 to C18 fatty acids and any mixtures thereof; an oil phase in 15 to 90% by weight of total composition; and an aqueous phase in 0.5 to 20% by weight of total composition; homogenizing the liquid composition with the first batch of oil sludge; and fluidizing the oil sludge that the oil residues are substantially dissociated from the solid object forming a liquid phase including the liquid composition and the separated oil.
    Type: Grant
    Filed: April 22, 2013
    Date of Patent: July 25, 2017
    Assignee: BCI SABAH INTERNATIONAL PETROLEUM SDN. BHD.
    Inventors: Chun Hwa See, Wasan Saphanuchart, Ming Hoong Looi, Yang Loong Chong
  • Patent number: 9661856
    Abstract: Citral, cinnamaldehyde, carvacrol, and allspice oil were found to be highly effective antimicrobials, producing statistically significant reductions in Escherichia coli populations within minutes. In addition, synergy was observed between silver ions and these essential oils, thereby lessening the amount of the plant antimicrobial required to produce the same effect. Based on these observations, compositions including these agents and there use as an antimicrobial treatment that is safe for human consumption, are active in the presence of organic matter, are provided.
    Type: Grant
    Filed: August 26, 2013
    Date of Patent: May 30, 2017
    Assignee: The Arizona Board of Regents on Behalf of The University of Arizona
    Inventors: Kelly R. Bright, Sadhana Ravishankar, Damian H. Gilling
  • Patent number: 9630122
    Abstract: A system for removing salt from a process stream being fed into a flash separator introduces a swirling motive fluid into the fluid column of the separator. The swirling motive fluid comes into contact with salt components residing in the fluid of the column to create a salt slurry. Means to limit the upward movement of the swirling motive fluid can be provided. The salt slurry is then removed and can be sent to a brine generation vessel. Saturated brine from the vessel is transported back to the fluid column to replace the motive fluid in the column.
    Type: Grant
    Filed: February 29, 2016
    Date of Patent: April 25, 2017
    Assignee: Cameron Solutions, Inc.
    Inventors: Joseph Min-Hsiun Lee, Gary W. Sams
  • Patent number: 9416033
    Abstract: The present invention provides a low energy alternative to conventional thermal/evaporation processes for “zero liquid discharge” treatment of strong saline brines. The products of the process include a salt-free liquid and solid salt. In particular, an antisolvent can be mixed with liquids containing high total dissolved solids. The mixture can be chilled, whereby solid salt is precipitated and separated from the mixture at near ambient temperature leaving a mixed liquor. The antisolvent can be selected from a class of organic compounds that form solutions with salt brines that exhibit a critical solution temperature lower than a critical solution temperature of the salt brines alone. The mixed liquor can be heated to a temperature above its lower critical solution temperature to produce an antisolvent liquid phase for recycle to the process. Finally, a reduced salinity aqueous phase can be polished by reverse osmosis or other conventional technology to produce clean water for discharge or beneficial use.
    Type: Grant
    Filed: December 6, 2012
    Date of Patent: August 16, 2016
    Assignee: Drake Water Technologies, Inc.
    Inventor: Ronald N. Drake
  • Patent number: 9409801
    Abstract: A method is described use of hydrocolloids for removal of organic and inorganic pollutants from a continuous stream of liquid where chemical composition of the water inhibits the reactants for linking/cross linking hydrocolloids. The method is comprising the steps of enabling said reactants present in the liquid stream and bring them to reaction with the hydrocolloid already brought to attachment with pollutants, where after flock formation allows for separation. Applications of the method are also described.
    Type: Grant
    Filed: January 19, 2011
    Date of Patent: August 9, 2016
    Assignee: SORBWATER TECHNOLOGY AS
    Inventor: Atle Mundheim
  • Patent number: 9375768
    Abstract: The present invention is directed to a method of oxidizing an organic compound present in soil, groundwater, process water or wastewater comprising contacting such organic compound with a persulfate and ferrous lactate.
    Type: Grant
    Filed: March 21, 2013
    Date of Patent: June 28, 2016
    Assignee: PEROXYCHEM LLC
    Inventors: Elena Pisanova, John Rovison
  • Patent number: 9272972
    Abstract: A system for removing salt from a rich mono ethylene glycol (MEG) stream being fed into a flash separator isolates the fluid residing in the brine column of the separator from the MEG and introduces a swirling motive fluid into the column. The swirling motive fluid comes into contact with salt components residing in the isolated fluid of the column to create a salt slurry. The salt slurry is then removed and sent to a brine generation vessel. Saturated brine from the vessel is transported back to the column to replace the motive fluid in the column.
    Type: Grant
    Filed: June 17, 2014
    Date of Patent: March 1, 2016
    Assignee: Cameron Solutions, Inc.
    Inventors: Joseph Min-Hsiun Lee, Gary W. Sams
  • Patent number: 9199885
    Abstract: In order to render sewage sludge suitable for beneficial purposes, it must be disinfected and stabilized. EDC deactivation is rapidly becoming a desirable result of any sludge or biosolids treatment process. Disclosed herein is a process of treating sewage sludge so as to stabilize the sludge that involves the presence of an iron-containing compound during dewatering of the sludge. Process embodiments described also achieve biosolid samples that have reduced EDC activity, Other embodiments disclosed involve use of a combination of iron salts ferrate and ferric chloride that are added to wastewater sludge in the dewatering step before heat drying. The biosolids resulting from sludge treated with aniron-containing compound are able to resist putrefaction for more than two to three weeks.
    Type: Grant
    Filed: March 17, 2014
    Date of Patent: December 1, 2015
    Assignee: The Administrators of the Tulane Educational Fund
    Inventors: Robert S. Reimers, Andrew J. Englande, Jr., Norman K. Murray, Yue Xu
  • Patent number: 9175175
    Abstract: A method is provided for making thermochromic pigments in microcapsules having unusually small particle sizes.
    Type: Grant
    Filed: October 16, 2014
    Date of Patent: November 3, 2015
    Assignee: Chromatic Technologies, Inc.
    Inventors: Terrill Scott Clayton, Timothy J. Owen, Lyle Small
  • Publication number: 20150083669
    Abstract: Some waters have high sulfate contents, such as acid mine drainage (AMD), which makes them unsuitable for use in fracturing fluids and difficult to dispose. Such waters may be treated with a solution of barium chloride to react with the sulfate ion of the sulfates and precipitate the sulfates as barium sulfate. Not all of the sulfates needs to be removed for the reclaimed water to be useful in formulating a fracturing fluid. The by-product of the reaction is almost pure barium sulfate, which is an inert, commercially valuable material that may be used in drilling fluids, paint and other industries.
    Type: Application
    Filed: September 19, 2014
    Publication date: March 26, 2015
    Applicant: BAKER HUGHES INCORPORATED
    Inventors: Ronald M. Matherly, Jiasheng Cao
  • Publication number: 20150076075
    Abstract: Coagulation/flocculation apparatus for the treatment of a hydraulic flow of any type of liquid, upstream of a physical separation element, in particular upstream of a flotation unit, or of a filtration unit, in particular a membrane filtration unit, which apparatus comprises at least one coagulator with injection of coagulant, followed by a flocculator, which are successively passed through by the hydraulic flow, in which apparatus: the coagulator comprises a reactor (1) for injection of coagulant under high energy, followed by a low-energy coagulation reactor (2); an intermediate high-energy element (3) is placed between the coagulation reactor (2) and the flocculator (4); and the flocculator is a static flocculator of piston type (4) having the same width as the physical separation element (5) located downstream.
    Type: Application
    Filed: January 3, 2013
    Publication date: March 19, 2015
    Inventors: Patrick Vion, Guillem Grau
  • Publication number: 20150076078
    Abstract: This disclosure describes providing techniques to remove suspended solids from a process stream. This disclosure describes a method for adding a chemical, a cationic flocculant to the process stream, in which the chemical induces flocs of suspended solids. The process removes the flocs of suspended solids by using a device. This creates two streams, a liquids and dissolved solids stream and a suspended solids stream.
    Type: Application
    Filed: September 15, 2014
    Publication date: March 19, 2015
    Inventor: Charles C Gallop
  • Publication number: 20150060367
    Abstract: The present invention provides a coagulation processing method capable of adding a sufficiently-dissolved coagulant aqueous solution to being processed water and materializing high-efficiency coagulation processing, a coagulation processing unit, and a water processing apparatus. A coagulation processing unit includes a coagulant aqueous solution storage tank 1 to have a stirrer 5 and store a coagulant aqueous solution, a particle size distribution measurement device 50 to measure the particle size distribution of the coagulant aqueous solution in the coagulant aqueous solution storage tank 1, a coagulation tank 11 to mix being processed water with an added coagulant aqueous solution and form a coagulation, a coagulation removing section 9 to remove the coagulation from the being processed water containing the coagulation, and a control section 6 to control the stirrer 5 so that a median size in the particle size distribution of the coagulant aqueous solution may be not more than 1.
    Type: Application
    Filed: July 31, 2014
    Publication date: March 5, 2015
    Inventors: Satoshi ISHII, Kenji OKISHIRO, Hiroshi SASAKI
  • Publication number: 20150060369
    Abstract: A mobile water re-use system can include a chemical treatment apparatus, at least one weir tank in fluid communication with the chemical treatment apparatus, and two or more settling tanks in fluid communication with each other and at least one of the settling tanks in fluid communication with the weir tank. The weir tank can have a first end, a second end, an internal chamber, and a plurality of baffles that induce turbulent flow of fluid through the internal chamber. The settling tanks can provide, promote, facilitate, result in, and/or induce laminar flow of fluid through at least a portion of the internal chamber. Weir tanks, settling tanks, and method of treating flowback and produced water are also described.
    Type: Application
    Filed: August 28, 2014
    Publication date: March 5, 2015
    Inventors: James Chance Richie, Anthony Gutta
  • Patent number: 8968572
    Abstract: In a device and a process for purifying water which is contaminated with sulphate ions and heavy metal ions, the water is collected in a water reservoir and a substance having basic activity in water is fed to the water reservoir in such a manner that a precipitant having heavy metal ions is precipitated from the water, wherein at least a subquantity of water is taken off from the water reservoir and is separated into pure water which is substantially freed from sulphate ions and heavy metal ions and dirty water which is enriched with sulphate ions and heavy metal ions. The dirty water is at least in part recirculated to the water reservoir, as a result of which a concentration of sulphate ions in the water reservoir is achieved such that a precipitant having sulphate ions is precipitated from the water.
    Type: Grant
    Filed: January 7, 2008
    Date of Patent: March 3, 2015
    Assignee: Siemens Aktiengesellschaft
    Inventor: Michael Riebensahm
  • Patent number: 8945394
    Abstract: Disclosed herein are systems and methods for removing fine particulate matter from a fluid, comprising a separator that separates an inflow fluid stream into an overflow fluid path and an underflow fluid path, where the underflow fluid path is treated with a tethering material that attaches to the coarse particulate matter to form tether-bearing anchor particles and where the overflow fluid path is treated with an activating material so that the activating material interacts with the fine particulate matter to form activated particles. After these treatments, the underflow fluid path containing the tether-bearing anchor particles is commingled with the overflow fluid path containing the activated particles, so that a removable complex is produced that can be removed in a settling facility, thereby removing the fine particulate matter from the fluid.
    Type: Grant
    Filed: July 29, 2010
    Date of Patent: February 3, 2015
    Assignee: Soane Energy, LLC
    Inventors: Patrick D. Kincaid, Robert P. Mahoney, David Soane
  • Patent number: 8906239
    Abstract: The suspended solids content of a Bayer process stream is reduced by contacting the stream with silicon-containing polymers.
    Type: Grant
    Filed: February 1, 2012
    Date of Patent: December 9, 2014
    Assignee: Cytec Technology Corp.
    Inventors: Qi Dai, Donald Paul Spitzer, Howard I. Heitner, Huann-Lin Tony Chen
  • Publication number: 20140353252
    Abstract: A method of supplying engineered water for drilling or hydraulic fracturing of wells, where the water comes from either fresh sources or is recycled from drilling or hydraulic fracturing operations whereby the water is treated for example with a mechanical vapor recompression unit or other treating apparatuses and methods to significantly reduce the concentration of constituents that are deleterious to drilling or hydraulic fracturing chemistries while keeping desirable constituents, such as semi-volatile antimicrobial constituents. The final composition of the engineered water is designed to contain constituents that are optimal for drilling or hydraulic fracturing operations.
    Type: Application
    Filed: September 12, 2012
    Publication date: December 4, 2014
    Applicant: 212 Resources
    Inventors: Stephen Earl Hester, Leslie Douglas Merrill, Christopher R. Lloyd
  • Patent number: 8894733
    Abstract: Disclosed is a method for recycling a cerium oxide abrasive. The method may include adding a strong alkali solution to a slurry waste of the cerium oxide abrasive, adding sodium fluoride to the slurry waste, and separating a cerium oxide particle included in the slurry waste from other kinds of particles.
    Type: Grant
    Filed: March 11, 2011
    Date of Patent: November 25, 2014
    Assignee: LG Chem, Ltd.
    Inventors: Won-Jae Moon, Sang-Oeb Na, Hyung-Young Oh
  • Patent number: 8889010
    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: Grant
    Filed: July 25, 2011
    Date of Patent: November 18, 2014
    Assignee: General Electric Company
    Inventors: James Manio Silva, Hope Matis, William Leonard Kostedt, IV
  • Patent number: 8883013
    Abstract: The present invention relates to a treatment installation of aqueous fluid, in particular to ensure elimination of organic micropollutants and natural organic matter, comprising a single reactor (10) for treatment of aqueous fluid by contact with a fluidized bed of coagulated and flocculated powdered activated carbon, operating in ascending flow, said reactor being equipped with injection means of new powdered activated carbon, coagulant and polymer, arranged to define three distinct operating zones in the reactor: a first arranged zone (A) at the base of the reactor to ensure intake and homogeneous distribution of the aqueous fluid pre-treated by contact with coagulant and polymer, a second zone, surmounting the first, constituted by the fluidized bed of coagulated and flocculated powdered activated carbon (B), and a third zone (C), arranged in the top part of the reactor for separation and recovery of the purified aqueous liquid.
    Type: Grant
    Filed: June 9, 2010
    Date of Patent: November 11, 2014
    Assignee: Saur
    Inventor: Jean Perot
  • Publication number: 20140311970
    Abstract: A rotating screen has one or more panels arranged into a cylinder, or drum. The panels have openings in a micro-screening range, for example 100 microns or less. Wastewater to be screened is fed to the interior of the drum. The drum rotates constantly but the rotation may be discontinuous and the speed of rotation may be variable. The drum may be cleaned by an air knife. If the wastewater contains oil and grease, a short hot water spray may be provided before cleaning with the air knife. Optionally, an internal auger conveys solids down the length of the drum to an outlet. The rotating screen may be used for primary treatment of wastewater. The rotating screen may be used produce screenings with a dried solids concentration of 5% or more, for example 6-7%. The primary sludge may be treated in an anaerobic digester.
    Type: Application
    Filed: December 4, 2012
    Publication date: October 23, 2014
    Inventors: Michael David Theodoulou, Juan Carlos Josse
  • Patent number: 8864994
    Abstract: Disclosed is a method for extracting high acyl gellan from the fermentation broth containing gellan gum with a low production cost and high quality of products, comprising the following steps: (1) Treatment of the fermentation broth with an enzyme; (2) flocculation of the treated fermentation broth with acid; (3) wash of the fiber-like material; and (4) drying and milling.
    Type: Grant
    Filed: June 2, 2010
    Date of Patent: October 21, 2014
    Assignee: Zhejiang DSM Zhongken Biotechnology Co., Ltd.
    Inventors: Xuegang Wang, Rongming Wu, Zhiming Zhang, Jialiang Wang, Huaiyuan Xu, Yubin Shen, Liqiang Yang
  • 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
  • Patent number: 8834725
    Abstract: A process for treating acid mine drainage containing heavy 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 metal complexes. In one embodiment, the metal cation is a trivalent metal ion, e.g., ferric iron such as in ferric sulfate. In another embodiment, a divalent metal ion such as in ferrous sulfate is used. After the removal of the heavy metal complexes, the effluent water is treated with at least a phosphate additive to remove remaining soluble contaminants, thus producing a treated water stream with reduced levels of contaminants.
    Type: Grant
    Filed: January 31, 2011
    Date of Patent: September 16, 2014
    Assignee: Chevron U.S.A. Inc.
    Inventors: Rahul Shankar Bhaduri, Alexander Kuperman, Michael Dubrovsky
  • Publication number: 20140245930
    Abstract: Embodiments provided herein relate to removing liquid from soil or other moisture rich media. In some embodiments, a method for solidifying sludge is provided and involves providing a sludge, fluidizing the sludge to form a fluidized sludge, adding a gelling agent to the fluidized sludge in an amount sufficient to form a slurry, and adding a dewatering agent to the slurry in an amount sufficient to dewater the slurry, thereby solidifying the sludge.
    Type: Application
    Filed: November 2, 2011
    Publication date: September 4, 2014
    Applicant: EMPIRE TECHNOLOGY DEVELOPMENT LLC
    Inventor: Bing Chen