Patents by Inventor Marinus Cornelis Maria Van Loosdrecht
Marinus Cornelis Maria Van Loosdrecht has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
-
Patent number: 11834355Abstract: The invention relates to a method and system for phosphate recovery from a stream such as waste flow, sewage or another sludge stream. The method comprises the steps of: providing an incoming stream comprising an initial amount of phosphate; dosing/controlling iron salt to the stream such that precipitates are formed in the stream, wherein the precipitates comprise vivianite like structures comprising more than 60% of the initial amount of phosphate in the incoming stream, and preferably also the steps of: separating the vivianite like structures from the stream; and recovering the phosphates from the separated vivianite like structures.Type: GrantFiled: March 14, 2018Date of Patent: December 5, 2023Assignee: Kemira OyjInventors: Philipp Karl Wilfert, Leendert Date Korving, Peter Carlo Rem, Geert-Jan Witkamp, Marinus Cornelis Maria Van Loosdrecht, Achim Lulian Dugulan, Kees Goubitz, Simon Peter Maria Berkhout
-
Publication number: 20200010342Abstract: The invention relates to a method and system for phosphate recovery from a stream such as waste flow, sewage or another sludge stream. The method comprises the steps of: providing an incoming stream comprising an initial amount of phosphate; dosing/controlling iron salt to the stream such that precipitates are formed in the stream, wherein the precipitates comprise vivianite like structures comprising more than 60% of the initial amount of phosphate in the incoming stream, and preferably also the steps of: separating the vivianite like structures from the stream; and recovering the phosphates from the separated vivianite like structures.Type: ApplicationFiled: March 14, 2018Publication date: January 9, 2020Inventors: Philipp Karl Wilfert, Leendert Date Korving, Peter Carlo Rem, Geert-Jan Witkamp, Marinus Cornelis Maria Van Loosdrecht, Achim Lulian Dugulan, Kees Goubitz, Simon Peter Maria Berkhout
-
Patent number: 10160680Abstract: A process is provided, comprising: (a) supplying ammonium-containing wastewater to a reactor containing granular sludge comprising granules having a core of anammox bacteria and an outer rim of ammonia oxidizing bacteria; (b) subjecting the wastewater to ammonium oxidation at a temperature between 5 to 25° C., a dissolved oxygen concentration between 0.4 mg/L to 4.0 mg/L, and a hydraulic retention time between 0.5 hours to 1.5 days, obtaining a nitrogen gaseous stream and a dispersion of granular and non-sludge in treated wastewater; and (c) separating the dispersion into a granular sludge stream and a stream of treated wastewater and non-granular sludge, and (d) recycling the granular sludge to the reactor while discharging the non-granular sludge, wherein the granular sludge has a reactor retention time at least ten times the hydraulic retention time, and wherein the retention time of non-granular sludge is no more than three times the hydraulic retention time.Type: GrantFiled: April 3, 2014Date of Patent: December 25, 2018Assignee: PAQUES I.P. B.V.Inventors: Tim Lucas George Hendrickx, Tommaso Lotti, Marinus Cornelis Maria Van Loosdrecht, Jans Kruit
-
Patent number: 10041095Abstract: The invention relates to a process for producing a microbial storage compound, in particular polyhydroxyalkanoate, using micro-organisms capable of accumulating such microbial storage compound, wherein such micro-organisms are selected and the microbial storage compound is accumulated by carrying out the so-called feast phase of the selection step and the accumulation of the microbial storage compound in selected micro-organisms in the same reactor and carrying out the so-called famine phase of the selection step in a separate, smaller, reactor.Type: GrantFiled: May 22, 2015Date of Patent: August 7, 2018Assignee: PAQUES I.P. B.V.Inventors: Hendrik Dijkman, Yang Jiang, Jelmer Tamis, Leonie Marang, Robbert Kleerebezem, Marinus Cornelis Maria Van Loosdrecht
-
Patent number: 9963829Abstract: An invention in the field of papermaking that relates in particular to sizing paper. Problems with state of the art methods are that the sizing chemicals used are typically expensive; may be available only in limited supply; are produced using methods that are damaging to the environment; and whose production is far from carbon-neutral. It is an object of the present invention to provide an alternative to the methods of the prior art and to overcome one or more of the above mentioned disadvantages.Type: GrantFiled: April 14, 2016Date of Patent: May 8, 2018Assignee: TECHNISCHE UNIVERSITEIT DELFTInventors: Marinus Cornelis Maria Van Loosdrecht, Lin Yuemei, Tommaso Lotti
-
Patent number: 9884779Abstract: Biological wastewater treatment of wastewater is performed by oxidizing organic carbon with sulfur or a sulfur compound as an electron carrier, and reducing the sulfur or sulfur compound to sulfide. The sulfide is oxidized with nitrate or oxygen. If necessary, ammonia is oxidized to nitrate and then reduced to nitrogen gas. The process is effective for saline waste water facilities, as well as non-saline waste water facilities.Type: GrantFiled: December 2, 2011Date of Patent: February 6, 2018Assignee: THE HONG KONG UNIVERSITY OF SCIENCE AND TECHNOLOGYInventors: Guanghao Chen, Ho Kwong Chui, Hui Lu, Di Wu, Tianwei Hao, Feng Jiang, Marinus Cornelis Maria Van Loosdrecht
-
Publication number: 20170198314Abstract: The invention relates to a process for producing a microbial storage compound, in particular polyhydroxyalkanoate, using micro-organisms capable of accumulating such microbial storage compound,wherein such micro-organisms are selected and the microbial storage compound is accumulated by carrying out the so-called feast phase of the selection step and the accumulation of the microbial storage compound in selected micro-organisms in the same reactor and carrying out the so-called famine phase of the selection step in a separate, smaller, reactor.Type: ApplicationFiled: May 22, 2015Publication date: July 13, 2017Applicant: Paques I.P. B.V.Inventors: Hendrik DIJKMAN, Yang JIANG, Jelmer TAMIS, Leonie MARANG, Robbert KLEEREBEZEM, Marinus Cornelis Maria VAN LOOSDRECHT
-
Publication number: 20160230345Abstract: An invention in the field of papermaking that relates in particular to sizing paper. Problems with state of the art methods are that the sizing chemicals used are typically expensive; may be available only in limited supply; are produced using methods that are damaging to the environment; and whose production is far from carbon-neutral. It is an object of the present invention to provide an alternative to the methods of the prior art and to overcome one or more of the above mentioned disadvantages.Type: ApplicationFiled: April 14, 2016Publication date: August 11, 2016Inventors: Marinus Cornelis Maria Van Loosdrecht, Lin Yuemei, Tommaso Lotti
-
Publication number: 20160052811Abstract: The invention relates to a process for biological removal of nitrogen from wastewater comprising: (a) providing a stream of wastewater comprising ammonium; (b) continuously supplying the stream of wastewater to a reactor containing granular sludge comprising granules having a core of anammox bacteria and an outer rim of ammonia oxidizing bacteria; (c) subjecting the wastewater in the reactor to ammonium oxidation under ammonium oxidizing conditions comprising a temperature in the range of from 5 to 25° C., a concentration of dissolved oxygen in the wastewater in the range of from 0.4 mg/L to 4.0 mg/L, and a hydraulic retention time of the wastewater in the reactor in the range of from 0.5 hours to 1.Type: ApplicationFiled: April 3, 2014Publication date: February 25, 2016Applicant: Paques I.P. B.V.Inventors: Tim Lucas George HENDRICKX, Tommaso LOTTI, Marinus Cornelis Maria VAN LOOSDRECHT, Jans KRUIT
-
Publication number: 20130256223Abstract: Biological wastewater treatment of wastewater is performed by oxidizing organic carbon with sulfur or a sulfur compound as an electron carrier, and reducing the sulfur or sulfur compound to sulfide. The sulfide is oxidized with nitrate or oxygen. If necessary, ammonia is oxidized to nitrate and then reduced to nitrogen gas. The process is effective for saline waste water facilities, as well as non-saline waste water facilities.Type: ApplicationFiled: December 2, 2011Publication date: October 3, 2013Inventors: Guanghao Chen, Ho Kwong Chui, Hui Lu, Di Wu, Tianwei Hao, Feng Jiang, Marinus Cornelis Maria Van Loosdrecht
-
Publication number: 20080223789Abstract: A material for removing oxo-anions and metal cations from a liquid. This material is characterized in that it comprises hyperthermophilic ferritin. The present invention also relates to a method for removing at least one of oxo-anions and metal cations from a liquid. This method is characterized in that a material comprising hyperthermophilic ferritin is used as filter material. It is especially preferred that said liquid is comprised of water. The invention also relates to the use of hyperthermophilic ferritin for removing metal cations and oxo-anions from a liquid.Type: ApplicationFiled: March 12, 2008Publication date: September 18, 2008Applicant: Technische Universiteit DelftInventors: Muhammad Nahidul Hasan, Marinus Cornelis Maria Van Loosdrecht, Wilfred Raymond Hagen
-
Patent number: 6566119Abstract: The invention relates to a method of acquiring granular growth of a microorganism in a reactor containing a liquid medium. Surprisingly, according to the invention, aerobic microorganisms also can be induced to granular growth by maintaining specific culture conditions. During a first step an oxygen-containing gas is supplied and the reactor contents are kept in turbulence. In a second step, after a short settling period, the top part of the reactor medium is discharged.Type: GrantFiled: October 14, 1999Date of Patent: May 20, 2003Assignee: Technische Universiteit DelftInventors: Joseph Johannes Heijnen, Marinus Cornelis Maria Van Loosdrecht
-
Patent number: 6383390Abstract: The invention relates to a method of treating ammonia-comprising waste water in which the bicarbonate ion is the counter ion of the ammonium ion present in the waste water. According to the invention half the ammonium is converted into nitrite, yielding an ammonia and nitrite-containing solution, and in the second step the nitrite is used as oxidant for the ammonia. In the method according to the invention the conversion of half the ammonia into nitrite occurs automatically, providing a method which requires fewer controls. Also, the method according to the invention requires no external additive.Type: GrantFiled: September 22, 1999Date of Patent: May 7, 2002Assignee: Technische Universiteit DelftInventors: Marinus Cornelis Maria Van Loosdrecht, Michael Silvester Maria Jetten
-
Patent number: 5863435Abstract: A method is described for the biological treatment of ammonium-rich wastewater in at least one reactor which has a temperature of at least 25.degree. C., which involves the wastewater being passed through the said reactor(s) with a population, obtained by natural selection in the absence of sludge retention, in the suspended state of nitrifying and denitrifying bacteria to form, in a first stage with the infeed of oxygen, a nitrite-rich wastewater and by the nitrite-rich wastewater thus obtained being subjected, if required, in a second stage without the infeed of oxygen, to denitrification in the presence of a carbon source such as methanol, in such a way that the contact time between the ammonium-rich wastewater and the nitrifying bacteria is at most about two days, and the pH of the medium is controlled between 6.5 and 8.Type: GrantFiled: August 21, 1997Date of Patent: January 26, 1999Assignee: Grontmij Advies & Techniek B.V.Inventors: Joseph Johannes Heijnen, Marinus Cornelis Maria van Loosdrecht