Patents by Inventor Jonn-Ross Andrews
Jonn-Ross Andrews 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).
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Patent number: 11400416Abstract: Provided herein are osmotic desalination methods and associated systems. According to certain embodiments, multiple osmotic membranes may be used to perform a series of osmosis steps, such that an output stream having a relatively high water purity—compared to a water purity of an aqueous feed stream—is produced. In some embodiments, multiple draw streams can be used to produce aqueous product streams having sequentially higher purities of water. Certain embodiments are related to osmotic desalination systems and methods in which forward osmosis is used to produce a first product stream having a relatively high water purity relative to an aqueous feed stream, and reverse osmosis is used to perform a second step (and/or additional steps) on the first product stream. In some embodiments, multiple reverse osmosis steps can be used in series to perform a net desalination process.Type: GrantFiled: November 12, 2019Date of Patent: August 2, 2022Assignee: Gradiant CorporationInventors: Looh Tchuin Choong, Prakash Narayan Govindan, Maximus G. St. John, Steven Lam, Jonn-Ross Andrews, Karim M. Chehayeb
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Publication number: 20210147265Abstract: Described herein are systems and methods for treating an aqueous input stream comprising at least one suspended and/or emulsified immiscible phase (e.g., oil, grease) and, in some cases, one or more additional contaminants, such as solubilized bicarbonate (HCO3?) ions, solubilized divalent cations (e.g., Ca2+, Mg2+), solubilized trivalent cations (e.g., Fe3+, Al3+), organic material (e.g., humic acid, fulvic acid), hydrogen sulfide (H2S), and/or suspended solids. According to certain embodiments, the aqueous feed stream is supplied to a water treatment system comprising a chemical coagulation apparatus and a suspended solids removal apparatus (e.g., a clarifier). Within the chemical coagulation apparatus, an amount of an inorganic coagulant (e.g., aluminum chlorohydrate, polyaluminum chloride), an amount of a strong base (e.g., sodium hydroxide), and an amount of a polyelectrolyte (e.g., polyacrylamide) may be added to the aqueous input stream to form a chemically-treated stream.Type: ApplicationFiled: October 2, 2020Publication date: May 20, 2021Applicant: Gradiant CorporationInventors: Jonn-Ross Andrews, Prakash Narayan Govindan, Maximus G. St. John, Steven Lam
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Patent number: 10696564Abstract: Selective scaling in water treatment systems in which desalination is performed is generally described. According to certain embodiments, the location of the formation of solid scale within a water treatment system is controlled by adjusting one or more system parameters, such as the temperature and/or flow velocity of a saline stream within the water treatment system.Type: GrantFiled: August 20, 2018Date of Patent: June 30, 2020Assignee: Gradiant CorporationInventors: Prakash Narayan Govindan, Steven Lam, Maximus G. St. John, Jonn-Ross Andrews
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Publication number: 20200147554Abstract: Provided herein are osmotic desalination methods and associated systems. According to certain embodiments, multiple osmotic membranes may be used to perform a series of osmosis steps, such that an output stream having a relatively high water purity—compared to a water purity of an aqueous feed stream—is produced. In some embodiments, multiple draw streams can be used to produce aqueous product streams having sequentially higher purities of water. Certain embodiments are related to osmotic desalination systems and methods in which forward osmosis is used to produce a first product stream having a relatively high water purity relative to an aqueous feed stream, and reverse osmosis is used to perform a second step (and/or additional steps) on the first product stream. In some embodiments, multiple reverse osmosis steps can be used in series to perform a net desalination process.Type: ApplicationFiled: November 12, 2019Publication date: May 14, 2020Applicant: Gradiant CorporationInventors: Looh Tchuin Choong, Prakash Narayan Govindan, Maximus G. St. John, Steven Lam, Jonn-Ross Andrews, Karim M. Chehayeb
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Patent number: 10518221Abstract: Provided herein are osmotic desalination methods and associated systems. According to certain embodiments, multiple osmotic membranes may be used to perform a series of osmosis steps, such that an output stream having a relatively high water purity—compared to a water purity of an aqueous feed stream—is produced. In some embodiments, multiple draw streams can be used to produce aqueous product streams having sequentially higher purities of water. Certain embodiments are related to osmotic desalination systems and methods in which forward osmosis is used to produce a first product stream having a relatively high water purity relative to an aqueous feed stream, and reverse osmosis is used to perform a second step (and/or additional steps) on the first product stream. In some embodiments, multiple reverse osmosis steps can be used in series to perform a net desalination process.Type: GrantFiled: July 29, 2016Date of Patent: December 31, 2019Assignee: Gradiant CorporationInventors: Looh Tchuin Choong, Prakash Narayan Govindan, Maximus G. St. John, Steven Lam, Jonn-Ross Andrews, Karim M. Chehayeb
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Patent number: 10345058Abstract: Systems and methods for the removal of scale in humidification-dehumidification desalination apparatuses are generally described.Type: GrantFiled: November 18, 2016Date of Patent: July 9, 2019Assignee: Gradiant CorporationInventors: Maximus G. St. John, Jonn-Ross Andrews, Prakash Narayan Govindan
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Publication number: 20190106334Abstract: Selective scaling in water treatment systems in which desalination is performed is generally described. According to certain embodiments, the location of the formation of solid scale within a water treatment system is controlled by adjusting one or more system parameters, such as the temperature and/or flow velocity of a saline stream within the water treatment system.Type: ApplicationFiled: August 20, 2018Publication date: April 11, 2019Applicant: Gradiant CorporationInventors: Prakash Narayan Govindan, Steven Lam, Maximus G. St. John, Jonn-Ross Andrews
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Publication number: 20190009218Abstract: Provided herein are osmotic desalination methods and associated systems. According to certain embodiments, multiple osmotic membranes may be used to perform a series of osmosis steps, such that an output stream having a relatively high water purity—compared to a water purity of an aqueous feed stream—is produced. In some embodiments, multiple draw streams can be NI used to produce aqueous product streams having sequentially higher purities of water. Certain embodiments are related to osmotic desalination systems and methods in which forward osmosis is used to produce a first product stream having a relatively high water purity relative to an aqueous feed stream, and reverse osmosis is used to perform a second step (and/or additional steps) on the first product stream. In some embodiments, multiple reverse osmosis steps can be used in series to perform a net desalination process.Type: ApplicationFiled: July 29, 2016Publication date: January 10, 2019Applicant: Gradiant CorporationInventors: Looh Tchuin Choong, Prakash Narayan Govindan, Maximus G. St. John, Steven Lam, Jonn-Ross Andrews, Karim M. Chehayeb
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Patent number: 10144654Abstract: Selective scaling in water treatment systems in which desalination is performed is generally described. According to certain embodiments, the location of the formation of solid scale within a water treatment system is controlled by adjusting one or more system parameters, such as the temperature and/or flow velocity of a saline stream within the water treatment system.Type: GrantFiled: November 17, 2015Date of Patent: December 4, 2018Assignee: Gradiant CorporationInventors: Prakash Narayan Govindan, Steven Lam, Maximus G. St. John, Jonn-Ross Andrews
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Publication number: 20170144906Abstract: Described herein are systems and methods for treating an aqueous input stream comprising at least one suspended and/or emulsified immiscible phase (e.g., oil, grease) and, in some cases, one or more additional contaminants, such as solubilized bicarbonate (HCO3?) ions, solubilized divalent cations (e.g., Ca2+, Mg2+), solubilized trivalent cations (e.g., Fe3+, Al3+), organic material (e.g., humic acid, fulvic acid), hydrogen sulfide (H2S), and/or suspended solids. According to certain embodiments, the aqueous feed stream is supplied to a water treatment system comprising a chemical coagulation apparatus and a suspended solids removal apparatus (e.g., a clarifier). Within the chemical coagulation apparatus, an amount of an inorganic coagulant (e.g., aluminum chlorohydrate, polyaluminum chloride), an amount of a strong base (e.g., sodium hydroxide), and an amount of a polyelectrolyte (e.g., polyacrylamide) may be added to the aqueous input stream to form a chemically-treated stream.Type: ApplicationFiled: November 30, 2016Publication date: May 25, 2017Applicant: Gradiant CorporationInventors: Jonn-Ross Andrews, Prakash Narayan Govindan, Maximus G. St. John, Steven Lam
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Patent number: 9556041Abstract: Selective scaling in water treatment systems in which desalination is performed is generally described. According to certain embodiments, the location of the formation of solid scale within a water treatment system is controlled by adjusting one or more system parameters, such as the temperature and/or flow velocity of a saline stream within the water treatment system.Type: GrantFiled: November 19, 2015Date of Patent: January 31, 2017Assignee: Gradiant CorporationInventors: Prakash Narayan Govindan, Steven Lam, Maximus G. St. John, Jonn-Ross Andrews
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Publication number: 20160137526Abstract: Selective scaling in water treatment systems in which desalination is performed is generally described. According to certain embodiments, the location of the formation of solid scale within a water treatment system is controlled by adjusting one or more system parameters, such as the temperature and/or flow velocity of a saline stream within the water treatment system.Type: ApplicationFiled: November 17, 2015Publication date: May 19, 2016Applicant: Gradiant CorporationInventors: Prakash Narayan Govindan, Steven Lam, Maximus G. St. John, Jonn-Ross Andrews
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Publication number: 20160130157Abstract: Selective scaling in water treatment systems in which desalination is performed is generally described. According to certain embodiments, the location of the formation of solid scale within a water treatment system is controlled by adjusting one or more system parameters, such as the temperature and/or flow velocity of a saline stream within the water treatment system.Type: ApplicationFiled: November 19, 2015Publication date: May 12, 2016Applicant: Gradiant CorporationInventors: Prakash Narayan Govindan, Steven Lam, Maximus G. St. John, Jonn-Ross Andrews
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Patent number: 9221694Abstract: Selective scaling in water treatment systems in which desalination is performed is generally described. According to certain embodiments, the location of the formation of solid scale within a water treatment system is controlled by adjusting one or more system parameters, such as the temperature and/or flow velocity of a saline stream within the water treatment system.Type: GrantFiled: November 10, 2014Date of Patent: December 29, 2015Assignee: Gradiant CorporationInventors: Prakash Narayan Govindan, Steven Lam, Maximus G. St. John, Jonn-Ross Andrews