And Additional Treating Agent Other Than Mere Mechanical Manipulation (e.g., Chemical, Sorption, Etc.) Patents (Class 210/631)
  • Patent number: 8734648
    Abstract: Systems and methods are provided for the treatment of caustic wastewater. Specifically, systems and methods are provided for combining refinery spent caustic and ethylene spent caustic solutions and treating the combined spent caustic mixture using a wet air oxidation process.
    Type: Grant
    Filed: September 11, 2008
    Date of Patent: May 27, 2014
    Assignee: Siemens Energy, Inc.
    Inventors: Bryan J. Kumfer, Chad L. Felch, Bruce L. Brandenburg, Richard W. Lehmann
  • Publication number: 20140138311
    Abstract: Disclosed herein are an apparatus and method for reducing nitrate using iron-oxidizing microorganisms, which can easily reduce nitrate using iron-oxidizing microorganisms. The apparatus includes: a nitrate-reducing reactor which is operated under anaerobic conditions and provides a space for reduction of nitrate; and an iron-oxidizing microorganism provided in the nitrate-reducing reactor, wherein the iron-oxidizing microorganism releases divalent iron (Fe2+), the released Fe2+ is converted to Fe3+ by microbial oxidation under anaerobic conditions while releasing an electron, and the released electron is used in the reduction of nitrate into nitrogen gas by the iron-oxidizing microorganism.
    Type: Application
    Filed: June 26, 2013
    Publication date: May 22, 2014
    Inventors: Yong Su CHOI, Jae Shik CHUNG, Hyokwan BAE, Hwa Yeon JEON, Seockheon LEE
  • Publication number: 20140131272
    Abstract: Feed water is processed in an anaerobic digester. A solid-liquid separation device, for example a sludge screw thickener, treats a stream drawn from the digester in a recirculation loop. The solids portion is returned to the digester to increase the solids retention time and the TSS concentration in the digester. A liquid portion with less than 5% of the solids in the stream is removed and optionally treated further. The flow rate to the solid-liquid separation device is preferably greater than the influent flow rate. The solid-liquid separation device may receive digestate at a TSS concentration of 4% or more and return a solids portion having a TSS concentration of over 10%. The feed water is preferably one or more industrial waste streams having a COD concentration of 20,000 to 50,000 mg/L and a TSS concentration from 1-5%. The organic loading rate may be 10-12 kg/COD/m3/day.
    Type: Application
    Filed: March 15, 2013
    Publication date: May 15, 2014
    Applicant: ANAERGIA INC.
    Inventor: Juan Carlos JOSSE
  • Patent number: 8721889
    Abstract: The present invention provides a method for treating wastewater in which the majority of solids and biological oxygen demand compounds are separated from the wastewater feed using a primary separation process, to produce a solids phase and a water phase. The solids phase is irradiated to reduce the level of pathogens such that it is safe to use as a soil substitute and/or additive so that the solids can thus be disposed of in an environmentally-friendly manner. In additional embodiments, the solids that have been disinfected by radiation are mixed with a suitable inert filler material to produce a soil substitute, fertilizer, compost, or other soil additive. The liquid phase is treated in a substantially smaller system than would be required for treating the full-strength wastewater that can include a suspended media biological regeneration reactor system.
    Type: Grant
    Filed: April 16, 2013
    Date of Patent: May 13, 2014
    Assignees: Saudi Arabian Oil Company, Siemens Energy, Inc.
    Inventors: William G. Conner, Osama I. Fageeha, Thomas E. Schultz
  • Patent number: 8715504
    Abstract: Alkaline solutions resulting from extracting sulfide from hydrocarbon fluids can be treated in a combination of one or more electrodialysis cells and a bioreactor. The electrodialysis cell (2) includes an anode (4), a cathode (5), an electric power supply (7) and a first (12) and a second (11) compartment separated from each other by an anion exchange membrane (9). The alkaline solution is fed into the first compartment at the cathode side and the diluate (sulfide-depleted stream) leaving the first compartment has a lowered sulfide content and can be reused as the alkaline extractant solution. The concentrate (sulfide-enriched stream) leaving the second compartment is treated in the bioreactor (3) for removing sulfide and is then returned.
    Type: Grant
    Filed: December 12, 2008
    Date of Patent: May 6, 2014
    Assignee: Paques I.P. B.V.
    Inventors: René Alexander Rozendal, Sjoerd Hubertus Josef Vellinga, Erik van Zessen
  • Publication number: 20140116939
    Abstract: A method for wastewater treatment which comprises (a) separating and/or collecting urine from the wastewater for pretreatment, (b) removing phosphorus from urine using seawater, (c) optionally oxidizing nitrogen from urine, and (d) discharging the phosphorus-removed and/or nitrogen-oxidized urine to a sewer.
    Type: Application
    Filed: May 28, 2012
    Publication date: May 1, 2014
    Applicant: THE HONG KONG UNIVERSITY OF SCIENCE AND TECHNOLOGY
    Inventors: Guanghao Chen, Hamish Robert Mackey, Feng Jiang, Ho Kwong Chui
  • Patent number: 8702986
    Abstract: A method for sulfurous acid leaching of heavy metals from soils into a contaminated water fraction for subsequent precipitation with alkaline and nutrient reagents for filtration removal to provide a metal free soil and reclaimed water suitable for raising crops and open stream discharge.
    Type: Grant
    Filed: October 5, 2011
    Date of Patent: April 22, 2014
    Assignee: Earth Renaissance Technologies, LLC
    Inventor: Marcus G. Theodore
  • Publication number: 20140102157
    Abstract: A method for efficiently reducing water content of an object to be treated that contains water without requiring a high-temperature environment such as one exceeding the boiling point of water, and a method for efficiently extracting an oil-soluble substance from an object to be treated that contains water and the oil-soluble substance. A method for reducing water content of an object to be treated and/or extracting an oil-soluble substance in the object to be treated into oil is performed by mixing the object to be treated containing water or water and the oil-soluble substance with an oil at a temperature that is lower than the boiling point of water, at which temperature the oil is a liquid.
    Type: Application
    Filed: May 7, 2012
    Publication date: April 17, 2014
    Applicants: KIRISHIMA HIGHLAND BEER CO., LTD.
    Inventor: Masahiro Yamamoto
  • Patent number: 8696908
    Abstract: Various embodiments described herein provide methods and apparatus for releasing treated wastewater into the environment by combining the treated wastewater with a concentrated salty water before discharging the combined water into the environment. The treated wastewater and concentrated salty water may be combined in a ratio that will be less toxic to at least some resident marine life than the treated wastewater alone.
    Type: Grant
    Filed: May 13, 2010
    Date of Patent: April 15, 2014
    Assignee: Poseidon Resources IP LLC
    Inventor: Peter MacLaggan
  • Publication number: 20140083942
    Abstract: Embodiments relate to systems and methods for treating produced water and other contaminated water that can be customized or adapted to particular characteristics of the water and/or its contaminants or other contents while minimizing costs related to treating the water. In an embodiment, a method of treating produced water comprises degrading solid particles in the produced water using beneficial bacteria; filtering solid particles from the produced water; reducing pathogenic bacteria in the produced water by introducing ozone into the produced water; reducing contaminants in the produced water by passing the produced water through at least one filter; reducing salts in the produced water using a reverse osmosis system; and providing treated produced water.
    Type: Application
    Filed: September 25, 2013
    Publication date: March 27, 2014
    Inventor: Michael James Jungbauer
  • Patent number: 8679339
    Abstract: This invention relates to a refuse landfill leachate wastewater treatment system comprising a collection well, an adjustment tank, a filter, a comprehensive treatment system having a multi-stage anoxic/aerobic pool and a membrane biological reactor.
    Type: Grant
    Filed: May 20, 2010
    Date of Patent: March 25, 2014
    Inventors: Zhiping Kuang, Bin Lu, Wei Xiong
  • Publication number: 20140076804
    Abstract: A method precipitating struvite in wastewater uses a magnesium sacrificial anode as the only source of magnesium. A high-purity magnesium alloy cast anode was found to be very effective in recovery of high-quality struvite from water solutions and from supernatant of fermented waste activated sludge (WAS) from a high-purity oxygen wastewater treatment plant. Struvite purity was strongly dependent on the pH and the electric current density. Optimum pH of the solution was in the broad range between 7.5 and 9.3, with struvite purities exceeding 90%. The precipitated struvite accumulated in bulk liquid with significant portions attached to the anode surface from which regular detachment occurred.
    Type: Application
    Filed: September 19, 2013
    Publication date: March 20, 2014
    Inventors: Damian J. Kruk, Jan A. Oleszkiewicz
  • Publication number: 20140061125
    Abstract: The invention discloses a wastewater processing method of hydrolysis-acidification enhanced by addition of zero-valent iron (ZVI), including the following steps: 3˜6 ZVI-filling layers are settled in the middle of an anaerobic hydrolysis-acidification reactor. Excess sludge taken from sewage treatment plant using as seed sludge is added into this anaerobic hydrolysis-acidification reactor for startup and domestication. In the present invention, ZVI are added into this anaerobic hydrolysis-acidification reactor to accelerate organic matters degradation and produce more acetic acids, accompanied with higher COD removal obtained. ZVI can be protected from rust in this anaerobic biological environment due to the air isolation. Also, ZVI can enhance anaerobic hydrolysis of wastewater through reducing refractory pollutants involved in wastewaters.
    Type: Application
    Filed: September 21, 2011
    Publication date: March 6, 2014
    Inventors: Xie Quan, Yaobin Zhang, Yiwen Liu, Huimin Zhao, Shuo Chen, Yang Li
  • Patent number: 8663473
    Abstract: A method enhancing biological digestion of wastewater sludge is provided. The method uses chlorine dioxide to accelerate and improve the efficiency of aerobic or anaerobic digestion.
    Type: Grant
    Filed: June 21, 2012
    Date of Patent: March 4, 2014
    Assignee: BCR Environmental Corporation
    Inventor: Frederick P. Mussari
  • Publication number: 20140030797
    Abstract: Accelerated dechlorination of soil and water contaminated with chlorinated solvents in situ is achieved by delivering ferric ammonium citrate into the soils and/or water. The induction of ferric ammonium citrate into sulfate-rich reducing conditions initiates a combined abiotic and biotic mechanism for the dechlorination of subsurface contaminants. Initial and rapid removal of chlorinated solvents is achieved by way of reductive transformation, a mechanism utilizing the creation of an iron-bound soil mineral (pyrite) followed by stimulating conditions for enhanced biological natural attenuation.
    Type: Application
    Filed: July 25, 2012
    Publication date: January 30, 2014
    Inventor: Michael Scalzi
  • Publication number: 20130341269
    Abstract: The invention relates to a method for desulphuration of the digestate and biogas in a digester (1) of urban and/or agricultural and/or industrial effluent, by biochemical and/or thermochemical processes, the digester consisting of an enclosure (2) which is closed at the top, in which anaerobic digestion of a mass of products to be treated making up the digestate (4) takes place, the digester comprising at least one loop (10) for external recirculation of the digestate; an oxidant is injected at least at one point (13, 14) of the loop (10), the injection conditions being as follows: the speed of circulation of the digestate in the loop (10) must be high enough to prevent the deposition of sulphur on the walls of the pipes; the contact time between the injected oxidant and the recirculated digestate recirculated from the injection point (13, 14) of the oxidant until the reinjection point (11 b) of the digestate must be long enough for all the oxidant to be dissolved in the liquid phase of the digestate; the amo
    Type: Application
    Filed: December 23, 2011
    Publication date: December 26, 2013
    Applicant: DEGREMONT
    Inventors: Caroline Bouchet, Roger Nicol, Claude Prevot
  • Publication number: 20130341267
    Abstract: Disclosed is a process and apparatus that uses multiple stages or unit processes to treat wastewater, such as distillery spent wash which may be molasses spent wash (MSW). The stages include one or more of anaerobic digestion, chemical treatment, electrocoagulation, aerobic treatment, physical separation, and RO or adsorbent based treatment. A chemical treatment for the effluent from an anaerobic digester treating MSW is described. In an electrocoagulation step, a stable cathode is used to also provide electroflotation and hardness precipitation. Aerobic biological treatment and physical separation may be provided by a membrane bioreactor.
    Type: Application
    Filed: September 28, 2010
    Publication date: December 26, 2013
    Applicant: General Electric Company
    Inventors: Vijaysai Prasad, Raiendra Prasad Kalakodimi, Alagarsamy Subbiah, Arjun Bhattacharyya, Narain Madhavan
  • Publication number: 20130334133
    Abstract: The invention discloses systems and methods for producing a gas stream containing ozone and a “carrier” or sweep gas that has an oxygen concentration that is below a predetermined percentage for treatment of organic waste feed stocks in an anaerobic digester. In one embodiment, ozone and unreacted oxygen from an ozone generator are delivered to a pressure swing adsorption cycle, wherein the ozone is adsorbed onto a sieve and the excess oxygen is removed from the cycle. The sweep gas, which has a limited oxygen concentration, is then used to desorb the ozone from the pressure swing adsorption cycle and deliver the ozone to an anaerobic digester, where the ozone is used to treat the feed stock.
    Type: Application
    Filed: June 14, 2012
    Publication date: December 19, 2013
    Applicant: AIR PRODUCTS AND CHEMICALS, INC.
    Inventors: Annemarie Ott Weist, Vipul P. Dholakia, Neil Hannay
  • Publication number: 20130319940
    Abstract: In a wastewater treatment system, feed water is processed by anaerobic digestion, preferably in an anaerobic moving bed bioreactor (AnMBBR). Effluent from the AnMBBR passes through one or more solid-liquid separation units. A solids portions is treated by hydrolysis or suspended growth anaerobic digestion. A liquid portion of the hydrolysis or suspended growth anaerobic digestion effluent is returned to the AnMBBR or blended with effluent from the AnMBBR. The AnMBBR effluent may be treated with an aerobic moving bed bioreactor (MBBR) before the one or more solid-liquid separation steps. Membrane filtration may provide a first solid-liquid separation step. A thickened waste stream may be withdrawn from a recirculation loop flowing from the first solid-liquid separation unit to the MBBR. Optionally, a solids portion separated from the feed water upstream of the AnMBBR may also be treated by hydrolysis or suspended growth anaerobic digestion.
    Type: Application
    Filed: May 28, 2013
    Publication date: December 5, 2013
    Applicant: ANAERGIA INC.
    Inventors: Juan Carlos JOSSE, Michael David THEODOULOU, Sasha ROLLINGS-SCATTERGOOD
  • Publication number: 20130299422
    Abstract: A treatment agent for salt-containing organic waste liquid, the treatment agent including: Scuticociliatida, wherein the treatment agent treats salt-containing organic waste liquid; and a treatment method for salt-containing organic waste liquid, the treatment method including: bringing Scuticociliatida and salt-containing organic waste liquid into contact with each other to treat the salt-containing organic waste liquid.
    Type: Application
    Filed: July 16, 2013
    Publication date: November 14, 2013
    Inventor: Hiroyasu Doi
  • Patent number: 8580115
    Abstract: A method of cleaning filtration modules for the treatment of raw water, or wastewater, or activated sludge, is provided by circulating particles in untreated water. The deposits located on the filter membrane outer surfaces are removed by the mechanical action of the particles, without significantly damaging the membrane. Initially, untreated water, wastewater, or activated sludge is chemically-mechanically pretreated. Then the untreated water or wastewater polluted with biologically active material is discharged into a membrane bioreactor system having a filtration unit including at least one filtration tank. At least one submerged filtration membrane module is present in the filtration tank. The untreated water or wastewater in this filtration tank is filled with particles and circulates inside the filtration tank. The particles are non-porous, biologically resistant polymer particles.
    Type: Grant
    Filed: April 23, 2009
    Date of Patent: November 12, 2013
    Assignee: Microdyn-Nadir GmbH
    Inventors: Stefan Krause, Reinhard Voigt, Peter Cornel
  • Patent number: 8579544
    Abstract: A method for the combined chemical oxidation/assisted bioremediation of contaminated materials, comprising contacting a contaminated material with at least one metal chelate and at least one peroxide compound.
    Type: Grant
    Filed: October 18, 2010
    Date of Patent: November 12, 2013
    Assignee: SOLVAY (Societe Anonyme)
    Inventors: Noel Boulos, Alastair McNeillie, Jason Muessig
  • Patent number: 8568591
    Abstract: A new approach is proposed that contemplates systems and methods to support an environmentally-friendly, “green” thermophilic anaerobic digestion system. The system includes a thermophilic anaerobic digester as well as various independent modular anaerobic units to generate bio-methane from certain organic energy sources, including but not limited to, among other things, green municipal waste, restaurant and organic waste and effluents from industries such as breweries, grocery stores, food processing plants, granaries, wineries, pulp and paper mills, ethanol and biodiesel plants, fat and animal rendering, agricultural field crops, organic sludge accumulation within lagoons and waterways, marine organic matter and animal manure.
    Type: Grant
    Filed: August 29, 2012
    Date of Patent: October 29, 2013
    Inventor: Robert Knoop
  • Patent number: 8568590
    Abstract: A method for recovering phosphate from sewage treatment plants using multi-stage anaerobic digestion includes the treatment of organic acid digest with calcium hydroxide, calcium oxide, and similar compounds to raise pH to near neutral values and precipitate calcium phosphate compounds such as brushite and similar amorphous compounds. The method includes the formation of calcium phosphates on weak-acid ion exchange columns and membranes in contact with organic acid digest. The system includes removal of the calcium phosphate compounds formed by sedimentation, either static or against an upwelling flow, centrifugation, or filtration.
    Type: Grant
    Filed: May 6, 2010
    Date of Patent: October 29, 2013
    Inventor: Phillip Barak
  • Publication number: 20130270181
    Abstract: Selenium in the form of a reduced species such as selenocyanate is oxidized to produce an oxidized selenium species such as selenate or selenite, and then a biological reduction process is used to remove selenium from the oxidized selenium species. In an example, a chemical oxidant is added to a wastewater containing selenocyanate to produce selenate and selenite. The partially treated wastewater is then fed to a reactor containing a fixed media supporting a biofilm with selenium reducing organisms. The selenium in the selenate and selenite is reduced to an insoluble form of selenium, such as elemental selenium, which precipitates from the wastewater.
    Type: Application
    Filed: March 15, 2013
    Publication date: October 17, 2013
    Inventors: Timothy Michael PICKETT, Yanguo MA, Jill SONSTEGARD, James Scott KAIN, Dinh-Cuong VUONG, David Brian FRASER
  • 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: 20130256226
    Abstract: [Object] In relation to the treatment of organic wastewater in which organic wastewater is separated from biosludge by solid liquid separation using a separation membrane and the permeate water is subjected to RO membrane separation treatment and further in which normal solid liquid separation treatment is suspended and the membrane is cleaned by passing a cleaning liquid through the membrane from the permeate water side to the concentrated water side, the invention prevents a decrease in the flux of RO membranes due to TOC components eluted from the sludge during membrane cleaning and thereby reduces the frequency of chemical cleaning of the RO membranes as well as increases water recovery rate, thus allowing the treatment to be performed stably and efficiently. [Solution] After membrane cleaning, the solid liquid separation is resumed in such a manner that the pH of the obtainable permeate water is adjusted to not less than 9.
    Type: Application
    Filed: December 16, 2011
    Publication date: October 3, 2013
    Applicant: KURITA WATER INDUSTRIES LTD
    Inventor: Yu Tanaka
  • Patent number: 8545700
    Abstract: The invention includes a method for the optimization of the soluble CO2 concentration in the aeration basin of an activated sludge system, which significantly improves the specific growth rate of the nitrifying bacteria. The result is a reduction in capital and energy costs for municipalities. The rate of nitrification is a product of the nitrifying bacteria biomass concentration and the specific growth rate of the bacteria. In the activated sludge system, the biomass concentration is maintained at high concentrations by reducing the wasting rate. The specific growth rate is a function of the ammonium concentration and the environmental conditions. Here, the inventors show that growth of nitrifying bacteria is inhibited when the soluble CO2 concentration is elevated beyond certain parameters. Elevated soluble CO2 concentration also reduces the pH, which also impacts the rate of growth of nitrifying bacteria.
    Type: Grant
    Filed: February 24, 2010
    Date of Patent: October 1, 2013
    Assignee: University of South Florida
    Inventors: Peter George Stroot, Raymond Anthony Morris
  • Patent number: 8540877
    Abstract: A ballasted sequencing batch reactor system for treating wastewater including one or more sequencing batch reactors. A weighting agent impregnation subsystem is configured to mix biological flocs and weighting agent to form weighted biological flocs. A weighting agent recovery subsystem is configured to recover weighting agent from the weighted biological flocs and reintroduce the recovered weighting agent to the weighting agent impregnation subsystem.
    Type: Grant
    Filed: September 26, 2012
    Date of Patent: September 24, 2013
    Assignee: Siemens Water Technologies LLC
    Inventor: Steven E. Woodard
  • Patent number: 8535429
    Abstract: The present invention provides a method and apparatus for the treat en of process gas from an anaerobic digestion system or a landfill gas system. In one embodiment, the system comprises a caustic scrubber including a vertical column having a top and a bottom and including a counter current flow system, wherein a process gas stream flows up vertically through the column in counter current flow to a caustic liquid solution that flows downward through the column. The caustic liquid solution removes at least one acid from the process gas stream, wherein treated gas that is substantially free of acids bubbles out through an opening at the top of the vertical column.
    Type: Grant
    Filed: October 18, 2011
    Date of Patent: September 17, 2013
    Assignee: Clean Energy Renewable Fuels, LLC
    Inventor: Jeffrey J. Grill
  • Publication number: 20130233795
    Abstract: In an anaerobic treatment method in which contaminated water is introduced into an acidification tank to decompose polymer components in the contaminated water into organic acids, and the effluent from the acidification tank is introduced into a methane production tank containing non-biological fluidized carriers so as to convert the acids into methane, the treatment is carried out stably and continuously by preventing the occurrence of floating of carriers in the methane production tank. The CODcr concentration of polymer components other than organic acids in the acidification tank effluent to be introduced into the methane production tank is controlled to be not more than 300 mg/L. This control prevents the occurrence of acid production reactions in the methane production tank and the consequent proliferation of microorganisms, and thereby suppresses sticking of carriers as well as the occurrence of floating and blockage by the carriers.
    Type: Application
    Filed: November 18, 2011
    Publication date: September 12, 2013
    Inventors: Hideaki Shinto, Takaaki Tokutomi
  • Patent number: 8529771
    Abstract: A process for working up alkaline process wastewater from the nitration of aromatic compounds to mono-, di- and trinitroaromatics, said alkaline process wastewater having a pH of 7.5 to 13, comprising the steps of a) acidifying the alkaline process wastewater by adding concentrated sulfuric acid which originates from the workup of the aqueous, sulfuric acid-containing phase obtained in the nitration to a pH below 5, which forms a mixture A consisting of organic phase which separates out and acidic aqueous phase, b) contacting the mixture A with fresh sewage sludge, and c) removing the sewage sludge.
    Type: Grant
    Filed: December 13, 2010
    Date of Patent: September 10, 2013
    Assignee: BASF SE
    Inventors: Ruediger Fritz, Renate Hempel, Michael Zoellinger, Anne-Kathrin Merten, Doris Zschieschang, Ina Homann, Annett Gersdorf, Holger Allardt, Reiner Reetz, Elvira Flegel
  • Publication number: 20130220921
    Abstract: The present invention provides a method for treating wastewater in which the majority of solids and biological oxygen demand compounds are separated from the wastewater feed using a primary separation process, to produce a solids phase and a water phase. The solids phase is irradiated to reduce the level of pathogens such that it is safe to use as a soil substitute and/or additive so that the solids can thus be disposed of in an environmentally-friendly manner. In additional embodiments, the solids that have been disinfected by radiation are mixed with a suitable inert filler material to produce a soil substitute, fertilizer, compost, or other soil additive. The liquid phase is treated in a substantially smaller system than would be required for treating the full-strength wastewater that can include a suspended media biological regeneration reactor system.
    Type: Application
    Filed: April 16, 2013
    Publication date: August 29, 2013
    Applicants: SIEMENS ENERGY, INC., SAUDI ARABIAN OIL COMPANY
    Inventors: William G. CONNER, Osama I. FAGEEHA, Thomas E. SCHULTZ
  • Publication number: 20130220920
    Abstract: A method of conditioning mixed liquor in a membrane bioreactor includes dispersing a treatment additive in the mixed liquor. The treatment additive includes a water soluble block copolymer. Methods for improving flux in a membrane bioreactor and clarifying wastewater are also provided.
    Type: Application
    Filed: November 18, 2010
    Publication date: August 29, 2013
    Inventors: Sijing Wang, Stephen Robert Vasconcellos, Jianqiu Wang
  • Publication number: 20130213883
    Abstract: Low strength wastewater such as municipal sewage is treated using an anaerobic digester. In some examples, a wastewater stream is separated into a solids rich portion and a solids lean portion. The solids lean portion is treated, for example to remove nitrogen. The solids rich portion is treated in an anaerobic digester, preferably with influent or recuperative thickening. In another example, the wastewater stream is fed to an anaerobic digester and solid-liquid separation stages downstream of the di-gester return active bacteria and undigested organics to the digester. Both cases may use a process train comprising treatment in an anoxic tank followed by a nitritation tank with a portion of the effluent from the nitritation tank recirculated to the anoxic tank to provide nitritation and denitritation.
    Type: Application
    Filed: August 12, 2011
    Publication date: August 22, 2013
    Applicant: ANAERGIA INC.
    Inventors: Juan Carlos Josse, Andrew Benedek, Diana Mourato-Benedek
  • Publication number: 20130206687
    Abstract: Waste water may be treated by introducing activated carbon into a biological oxidation system as a slurry wherein: (1) the slurry is stable as compared to a conventional activated carbon slurry; (2) the activated carbon within the slurry retains at least 85% of its absorptive capacity; and (3) the activated carbon is immediately available for absorbing organic compounds when introduced into the biological oxidation system. The method is particularly useful for treating upset conditions. These slurries may also be used for treating other types of water to remove compounds that can be absorbed by activated carbon. Exemplary of such water types are process water and run-off water.
    Type: Application
    Filed: August 20, 2012
    Publication date: August 15, 2013
    Applicant: BAKER HUGHES INCORPORATED
    Inventors: Sidney A. Dunn, Roy Hernandez-Mena, Leonard E. Walther
  • Publication number: 20130206688
    Abstract: There is provided a process of reducing concentration of contaminants in a contaminated wastewater stream, such as contaminated wastewater output from a refinery, such as an oil-refinery; the process comprising: first, passing the contaminated wastewater stream into an electrocoagulation reactor for coagulating dispersed particles, filtering the wastewater stream after electrocoagulation for removing the coagulated dispersed particles, and providing a first stream of treated wastewater after the first filtration; second, passing the first stream of treated wastewater into a Spouted Bed Bio-Reactor (SBBR) containing a micro-organism or bacterium immobilized in polyvinyl alcohol (PVA) gel, filtering the first stream after treatment by the SBBR and providing a second stream of treated wastewater after the second filtration; and third, passing the second stream of treated wastewater into an adsorption column containing granular activated carbon (GAC) and providing a third stream of treated wastewater.
    Type: Application
    Filed: November 14, 2012
    Publication date: August 15, 2013
    Inventors: Muftah Hassan El-Naas, Sulaiman Abdulrazak Al-Zuhair
  • Patent number: 8491789
    Abstract: Disclosed herein are systems and process integrating the chemical-free oxidation of a photocatalytic decontamination process with a biological decontamination system to eliminate the THM and HAA precursors in drinking water. In one embodiment, a system may comprise a source providing fluid media contaminated with toxic natural organic matter, and a photocatalytic decontamination subsystem configured to oxidize the toxic natural organic matter via a photocatalytic process into non-toxic natural organic matter having a molecular weight low enough for biodegrading said non-toxic matter. The system may include a biological decontamination subsystem configured to immediately receive the contaminated fluid output from the photocatalytic decontamination subsystem, and employing a biological agent to biologically degrade the low-molecular weight non-toxic natural organic matter in the contaminated fluid to a concentration sufficient to prevent the formation of trihalomethanes or haloacetic acids.
    Type: Grant
    Filed: July 30, 2010
    Date of Patent: July 23, 2013
    Inventors: Brian E. Butters, Anthony L. Powell
  • Patent number: 8480901
    Abstract: Provided herein are methods and products for biomass digestion, which includes the production of biogas, U.S. Environmental Protection Agency classified Class A Biosolids, and pathogen reduced organic liquid fertilizer. Through the digestion of waste materials using sequential phases in an efficient digestion process, enhanced biomass conversion efficiency and improved output of products (in quantity and/or quality) are obtained with a significant reduction in dwell time in each phase.
    Type: Grant
    Filed: January 9, 2012
    Date of Patent: July 9, 2013
    Assignee: Landmark Structures I, LP
    Inventor: Detlev K. Johnson
  • Patent number: 8480903
    Abstract: The present invention provides systems and methods for in-situ remediation of soil and groundwater having contaminants such as but not limited to organic compounds perhaps providing adsorption, chemical oxidation, and even biodegradation of contaminants with novel treatments such as but not limited to mixtures of granular activated carbon, calcium peroxide, sodium persulfate, and nitrate perhaps in various concentrations.
    Type: Grant
    Filed: November 16, 2012
    Date of Patent: July 9, 2013
    Inventor: Jesse Clinton Taylor, III
  • Publication number: 20130168314
    Abstract: Disclosed is a method for treating wastewater containing at least one copper complex, comprising: 1) providing the wastewater containing the at least one copper complex, wherein the at least one copper complex is chosen from EDTA-Cu2+ complex and ammonia-Cu2+ complex; 2) adjusting pH of the wastewater containing the at least one copper complex to be within a range from 2.0 to 3.0, and adding ferrous sulfate to convert copper in the wastewater into a form of cuprous ions; and 3) adjusting pH of the wastewater obtained in step 2) to be within a range from 8.0 to 10.5, so that the cuprous ions in the wastewater are converted into precipitates of cuprous hydroxide and/or precipitates of cuprous oxide.
    Type: Application
    Filed: December 28, 2012
    Publication date: July 4, 2013
    Applicants: PEKING UNIVERSITY FOUNDER GROUP CO., LTD., ZHUHAI FOUNDER PCB DEVELOPMENT CO., LTD., ZHUHAI FOUNDER TECH. MULTILAYER PCB CO., LTD.
    Inventors: PEKING UNIVERSITY FOUNDER GROUP CO. LTD., ZHUHAI FOUNDER TECH. MULTILAYER PCB CO., LTD., ZHUHAI FOUNDER PCB DEVELOPMENT CO., LTD.
  • Patent number: 8465646
    Abstract: To provide an apparatus for treating a nitrate waste liquid that includes a denitrification tank (12A) which accommodates active sludge that adsorbs or takes in the radioactive substance in a nitrate waste liquid (11) and in which an anaerobic microorganism that reduces the nitric acid to nitrogen gas grows, and a reaeration tank (14) in which a denitrification-treated liquid (24) treated in the denitrification tank (12A) is aerated and mixed with active sludge.
    Type: Grant
    Filed: February 6, 2009
    Date of Patent: June 18, 2013
    Assignee: Mitsubishi Heavy Industries, Ltd.
    Inventors: Naoki Ogawa, Katsushi Shibata, Kazuhiko Kuroda, Hiromitsu Nagayasu, Kuniaki Takahashi, Yoshimi Kawato, Yoshihiro Meguro
  • Patent number: 8460549
    Abstract: An apparatus for treating an aqueous medium containing microorganisms comprises an intake for receiving the aqueous medium containing microorganisms. A pressure differential inducer is associated to the intake so as to receive the aqueous medium containing microorganisms with a desired level of gas saturation. The pressure differential inducer is actuatable to expose the aqueous medium containing microorganisms with a desired level of gas saturation to accelerations so as to cause cell wall rupture of the microorganisms. An outlet is associated with the pressure differential inducer for outletting the treated aqueous medium containing ruptured microorganism cells and contents. The treated aqueous medium containing ruptured cell wall of the microorganisms is disposed of and/or recycled.
    Type: Grant
    Filed: May 17, 2006
    Date of Patent: June 11, 2013
    Assignee: WM International Limited
    Inventors: Harold E. Haney, Robert Freeman, Rodrigo Lobo Morales, Daniel Gagnon
  • Patent number: 8454831
    Abstract: A method for treating wastewater comprises biologically treating the wastewater in a fixed-biomass biological reactor and then treating the wastewater in a ballasted flocculation system. The ballasted flocculation system produces a clarified effluent and sludge containing inert granular material having biomass accumulated thereon and suspended solids. The inert granular material having biomass accumulated thereon is separated from the suspended solids and then cleaned with a cleaning solution. After separating the biomass from the cleaned inert granular material, the cleaned inert granular material is recycled for use in the ballasted flocculation system.
    Type: Grant
    Filed: March 8, 2011
    Date of Patent: June 4, 2013
    Assignee: Veolia Water Solutions & Technologies Support
    Inventors: Phillippe Sauvignet, Kashi Banerjee, Charles D. Blumenschein
  • Publication number: 20130134092
    Abstract: Disclosed herein are systems and processes for treating a Waste Stream comprising biosolids, the Waste Stream provided at varying flow rates and solids concentrations so as to achieve an SOUR of 1.5 mg O2/g/hr or less and an ORP of at least +300 mV. The system includes a biosolids manipulation device to adjust the volume of suspended solids as a percent of the total volume of the Waste Stream to five (5) percent or less; a chemical oxidant feed device to dose the Waste Stream with an oxidant such as chlorine dioxide, ozone, or similar oxidant, and a treatment vessel associated with said chemical oxidant feed device through which said Waste Stream flows, wherein said chemical oxidant feed device and said treatment device are configured so as to achieve a dose rate between 25 and 200 parts per million of the Waste Stream and substantially complete mixing of the oxidant within 30 seconds of dose delivery in the treatment vessel.
    Type: Application
    Filed: April 27, 2011
    Publication date: May 30, 2013
    Applicant: BCR ENVIRONMENTAL CORPORATION
    Inventors: Frederick P. Mussari, Aaron Zahn
  • Patent number: 8449773
    Abstract: A process for converting organic waste materials into usable products and products thereof is disclosed. According to the process, organic waste materials are contacted with an oxidant to form a product and then an amount of the oxidant is removed from the product to form a reactor-ready feedstock. The oxidant is removed by various means, including washing, photolysis, catalytic means, oxidation of the oxidant, reduction of the oxidant, and heat. The reactor-ready feedstock may then be introduced into a reactor, such as a digester or incubator, and the reactor-ready feedstock is converted by microorganisms into biofuel or other products.
    Type: Grant
    Filed: July 6, 2010
    Date of Patent: May 28, 2013
    Assignee: Brigham Young University
    Inventors: Jaron C. Hansen, Lee D. Hansen
  • Patent number: 8444861
    Abstract: A method and apparatus for treating slurries of organic solids is disclosed. A slurry of organic solids is admixed with hydrogen peroxide, followed by exposure to microwave irradiation resulting in the heating of the mixture and enhanced hydrolysis of the organic solids. The treated slurry of organic solids can then be further treated in a variety of downstream processes, including solid separation, digestion and fermentation. The supernatant portion of the treated slurry of organic solids can be a source from which to recover compounds such as nutrients (for example nitrogen, phosphate, potassium, magnesium, calcium) or industrial organic compounds (such as acetic acid, propionic acid, butyric acid), or as a source of readily biodegradable organic compounds for supplementing a biological wastewater treatment process, digester or fermenter.
    Type: Grant
    Filed: August 11, 2006
    Date of Patent: May 21, 2013
    Inventors: Kwang Victor Lo, Ping Liao, Wayne Wong, Weigang Miles Yi, Weng I Chan, Frederic A. Koch, Donald S. Mavinic
  • Publication number: 20130112617
    Abstract: A redox water biological nutrient removal treatment method utilizing sulfurous acid to act as either an oxidizing or a reducing solution via pH adjustment for water conditioning and bacterial treatment.
    Type: Application
    Filed: November 7, 2011
    Publication date: May 9, 2013
    Applicant: Earth Renaissance Technoloogies, LLC
    Inventors: Marcus G. Theodore, Terry R. Gong
  • Patent number: 8425775
    Abstract: A method of in situ treatment of fracture fluid that is contaminated with a heavy metal may include passing a flow of contaminated fracture fluid through a reactor vessel. The reactor vessel may contain a plurality of biofilm retaining structures. Each of the structures may at least be partially coated with a biofilm. Additionally, the biofilm may include a plurality of bacteria retained in a matrix and the matrix may include DNA, protein and carbohydrates produced by the bacteria.
    Type: Grant
    Filed: June 22, 2010
    Date of Patent: April 23, 2013
    Assignee: Allegheny-Singer Research Institute
    Inventors: James Christopher Post, Garth David Ehrlich, John William Costerton
  • Patent number: 8425776
    Abstract: A method of in situ treatment of wastewater that is contaminated with a heavy metal may include passing a flow of contaminated wastewater through a reactor vessel. The reactor vessel may contain a plurality of biofilm retaining structures. Each of the structures may at least be partially coated with a biofilm. Additionally, the biofilm may include a plurality of bacteria retained in a matrix and the matrix may include DNA, protein and carbohydrates produced by the bacteria.
    Type: Grant
    Filed: June 22, 2010
    Date of Patent: April 23, 2013
    Assignee: Allegheny-Singer Research Institute
    Inventors: James Christopher Post, Garth David Ehrlich, John William Costerton