Patents Assigned to Trevi Systems Inc.
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Patent number: 11839853Abstract: Membranes and filtration modules for producing a concentrated feed stream and a diluted feed stream during operation in a water purification or wastewater treatment system. Filtration modules are provided that include a semipermeable membrane having a first side and a second side, the first side configured to receive a first feed solution stream from a first feed solution source and the second side configured to receive a second feed solution stream from a second feed solution source. The semipermeable membrane may be configured to operate at a hydrostatic pressure on the second side of the membrane from about 1% to about 40% of the hydrostatic pressure on the first side of the membrane, and may in some cases exhibit a salt rejection of from about 60 percent to about 90 percent during operation.Type: GrantFiled: January 20, 2017Date of Patent: December 12, 2023Assignee: Trevi Systems, Inc.Inventors: Qiang Wei, Elliott Baker, John Webley, Gary Carmignani
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Publication number: 20230149854Abstract: A draw solute for the forward osmosis membrane process comprises a random copolymer obtainable by random addition of a monomer containing ethylene oxide and butylene oxide to a compound having one or more hydroxyl groups.Type: ApplicationFiled: April 7, 2021Publication date: May 18, 2023Applicants: Nippon Shokubai Co., Ltd., Trevi Systems Inc.Inventors: Hiroki Tokushima, Akitoshi Matono, John Webley
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Patent number: 11612860Abstract: Draw compounds and draw solutions comprising said draw compounds for use in forward osmosis solvent purification systems. The draw compound may be a linear random, sequential, or block molecular chain consisting of at least one oxide monomer or diol monomer and have a temperature-dependent affinity with a feed solvent. The draw compound may further include a first terminal group and a second terminal group, at least one of the first terminal group and the second terminal group selected from the group consisting of a hydroxyl group, an amine group, a carboxylic group, an allyl group, and a C1 to C14 substituted and unsubstituted alky group. The draw compound may also be a branched random, sequential, or block molecular chain consisting of at least one oxide monomer or diol monomer.Type: GrantFiled: October 19, 2017Date of Patent: March 28, 2023Assignee: TREVI SYSTEMS INC.Inventors: Shaobin Fan, Gary Carmignani, John Webley
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Patent number: 11198097Abstract: Devices, methods, and systems for producing a concentrated feed stream and a diluted feed stream using a solute stream provided to the low pressure side of the semi-permeable membrane during a reverse osmosis process. The process includes providing a semipermeable membrane having a first side and a second side and introducing a first feed solution stream on the first side of the membrane and a second feed solution stream on the second side, wherein the osmotic pressure of the of the first feed solution stream is greater than or equal to the osmotic pressure of the second feed solution stream. The process further includes exerting hydrostatic pressure on the first side of the membrane such that solvent passes from the first side to the second side thereby producing a concentrated first feed solution stream and a diluted second feed solution stream. Devices and systems for performing the processes are provided.Type: GrantFiled: December 15, 2016Date of Patent: December 14, 2021Assignee: TREVI SYSTEMS INC.Inventors: Qiang Wei, John Webley, Elliott Baker, Gary Carmignani
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Publication number: 20210275968Abstract: Membranes and filtration modules for producing a concentrated feed stream and a diluted feed stream during operation in a water purification or wastewater treatment system. Filtration modules are provided that include a semipermeable membrane having a first side and a second side, the first side configured to receive a first feed solution stream from a first feed solution source and the second side configured to receive a second feed solution stream from a second feed solution source. The semipermeable membrane may be configured to operate at a hydrostatic pressure on the second side of the membrane from about 1% to about 40% of the hydrostatic pressure on the first side of the membrane, and may in some cases exhibit a salt rejection of from about 60 percent to about 90 percent during operation.Type: ApplicationFiled: January 20, 2017Publication date: September 9, 2021Applicant: TREVI SYSTEMS INC.Inventors: Qiang WEI, Elliott BAKER, John WEBLEY, Gary CARMIGNANI
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Publication number: 20190224623Abstract: Draw compounds and draw solutions comprising said draw compounds for use in forward osmosis solvent purification systems. The draw compound may be a linear random, sequential, or block molecular chain consisting of at least one oxide monomer or diol monomer and have a temperature-dependent affinity with a feed solvent. The draw compound may further include a first terminal group and a second terminal group, at least one of the first terminal group and the second terminal group selected from the group consisting of a hydroxyl group, an amine group, a carboxylic group, an allyl group, and a C1 to C14 substituted and unsubstituted alky group. The draw compound may also be a branched random, sequential, or block molecular chain consisting of at least one oxide monomer or diol monomer.Type: ApplicationFiled: October 19, 2017Publication date: July 25, 2019Applicant: TREVI SYSTEMS INC.Inventors: Shaobin FAN, Gary CARMIGNANI, John WEBLEY
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Patent number: 9676639Abstract: Improved systems and processes for forward osmosis water purification or desalination are herein disclosed. According to one embodiment a process for purifying contaminated water is provided wherein a contaminated feed solution stream comprising water and with a first osmotic pressure is passed through a semipermeable membrane to a draw side having a draw solution stream with a second osmotic pressure on a draw side of the semipermeable membrane. The diluted draw solution stream is heated, agglomerated and cooled to produce a cooled single phase water rich stream that is purified to produce a water product stream.Type: GrantFiled: October 26, 2015Date of Patent: June 13, 2017Assignee: TREVI SYSTEMS INC.Inventors: Gary Carmignani, Steve Sitkiewitz, John Wilfred Webley
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Publication number: 20160039685Abstract: Improved systems and processes for forward osmosis water purification or desalination are herein disclosed. According to one embodiment a process for purifying contaminated water is provided wherein a contaminated feed solution stream comprising water and with a first osmotic pressure is passed through a semipermeable membrane to a draw side having a draw solution stream with a second osmotic pressure on a draw side of the semipermeable membrane. The diluted draw solution stream is heated, agglomerated and cooled to produce a cooled single phase water rich stream that is purified to produce a water product stream.Type: ApplicationFiled: October 26, 2015Publication date: February 11, 2016Applicant: Trevi Systems Inc.Inventors: Gary Carmignani, Steve Sitkiewitz, John Wilfred Webley
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Patent number: 9216917Abstract: Improved systems and processes for forward osmosis water purification or desalination are herein disclosed. According to one embodiment a process for purifying contaminated water is provided wherein a contaminated feed solution stream comprising water and with a first osmotic pressure is passed through a semipermeable membrane to a draw side having a draw solution stream with a second osmotic pressure on a draw side of the semipermeable membrane. The diluted draw solution stream is heated, agglomerated and cooled to produce a cooled single phase water rich stream that is purified to produce a water product stream.Type: GrantFiled: April 23, 2012Date of Patent: December 22, 2015Assignee: TREVI SYSTEMS INC.Inventors: Gary Carmignani, Steve Sitkiewitz, John Wilfred Webley
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Publication number: 20120267308Abstract: Improved systems and processes for forward osmosis water purification or desalination are herein disclosed. According to one embodiment a process for purifying contaminated water is provided wherein a contaminated feed solution stream comprising water and with a first osmotic pressure is passed through a semipermeable membrane to a draw side having a draw solution stream with a second osmotic pressure on a draw side of the semipermeable membrane. The diluted draw solution stream is heated, agglomerated and cooled to produce a cooled single phase water rich stream that is purified to produce a water product stream.Type: ApplicationFiled: April 23, 2012Publication date: October 25, 2012Applicant: Trevi Systems Inc.Inventors: Gary Carmignani, Steve Sitkiewitz, John Wilfred Webley