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公开(公告)号：US20190169056A1
公开(公告)日：2019-06-06
申请号：US16207908
申请日：2018-12-03
发明人： Daniel P. Bjorklund , Vinod A. Raje , James M. Marlett , Manish Backliwal , Richard Schoen , Gregory Mandigo
IPC分类号： C02F9/00
摘要： Many processes generate wastewater streams rich in sulfate and chloride. These salt components are traditionally not recovered and are discharged to the environment. The invention recovers pure water for recycle/reuse and simultaneously generates valuable pure salts of NaCl and Na2SO4 for beneficial reuse, eliminating the waste stream. Process consists of the sequential crystallization of salt products with an intermediate purification step in which a chemical reactant is added to elevate levels of purity. The process is configured to simultaneously achieve zero liquid discharge.
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公开(公告)号：US20180221827A1
公开(公告)日：2018-08-09
申请号：US15751780
申请日：2016-08-10
发明人： Ravi CHIDAMBARAN
CPC分类号： B01D65/08 , B01D61/025 , B01D61/04 , B01D61/145 , B01D61/58 , B01D2311/04 , B01D2311/2603 , B01D2311/2626 , B01D2311/2649 , B01D2313/345 , C02F1/441 , C02F1/444 , C02F1/469 , C02F2101/30 , C02F2103/08 , C02F2303/04 , C02F2303/16 , C02F2303/20
摘要： A method and apparatus for reduction of biofouling on reverse osmosis membranes is provided. One embodiment provides a charged filter surrounding a cathode that is, in turn, surrounded by an anode. A plurality of these charged filters may be included in a larger filtration system that may be included in a typical reverse osmosis system.
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公开(公告)号：US20180118585A1
公开(公告)日：2018-05-03
申请号：US15567894
申请日：2016-04-22
IPC分类号： C02F1/44 , B01D61/36 , B01D9/00 , B01D71/02 , B01D69/02 , B01D61/58 , B01D63/08 , B01D71/34 , B01D71/36 , B01D71/52
CPC分类号： C02F1/447 , B01D9/0031 , B01D9/0059 , B01D61/025 , B01D61/14 , B01D61/364 , B01D61/366 , B01D61/58 , B01D63/08 , B01D69/02 , B01D71/024 , B01D71/34 , B01D71/36 , B01D71/52 , B01D2311/08 , B01D2311/25 , B01D2311/26 , B01D2311/2673 , B01D2313/146 , B01D2313/36 , B01D2313/38 , B01D2325/38 , C02F1/441 , C02F1/444 , C02F2103/023 , C02F2103/10 , C02F2103/18 , C02F2103/365 , C02F2201/009 , C02F2209/02 , C02F2209/10 , Y02A20/212 , Y02W10/37
摘要： Embodiments provide methods and structures for purification or volume reduction of a brine by an advanced vacuum distillation process (AVMD) to achieve higher flux by passage of vapors through an AVMD distillation unit. In one example, brine is circulated in a tank. The tank may include one or more membrane pouches that are submerged in the circulating brine or placed above the water level of the hot circulating brine. In other embodiments the membrane pouches are outside of the tank that includes the hot circulating brine but still in communication with it. The circulating brine is heated, allowing creation of water vapor. Using a vacuum, the water vapor is drawn through the membrane, where it may be condensed and subjected to further beneficial use. This process can concentrate to levels to generate crystals or solids, which can be separated and utilized.
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公开(公告)号：US11434150B2
公开(公告)日：2022-09-06
申请号：US15567894
申请日：2016-04-22
IPC分类号： C02F1/44 , B01D63/08 , B01D61/36 , B01D61/58 , B01D71/34 , B01D71/36 , B01D71/52 , B01D69/02 , B01D61/02 , C02F103/18 , C02F103/10 , C02F103/02 , B01D61/14 , C02F103/36 , B01D9/00 , B01D71/02
摘要： Embodiments provide methods and structures for purification or volume reduction of a brine by an advanced vacuum distillation process (AVMD) to achieve higher flux by passage of vapors through an AVMD distillation unit. In one example, brine is circulated in a tank. The tank may include one or more membrane pouches that are submerged in the circulating brine or placed above the water level of the hot circulating brine. In other embodiments the membrane pouches are outside of the tank that includes the hot circulating brine but still in communication with it. The circulating brine is heated, allowing creation of water vapor. Using a vacuum, the water vapor is drawn through the membrane, where it may be condensed and subjected to further beneficial use. This process can concentrate to levels to generate crystals or solids, which can be separated and utilized.
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公开(公告)号：US20210269338A1
公开(公告)日：2021-09-02
申请号：US17323491
申请日：2021-05-18
摘要： We provide methods, systems, and apparatus for treatment of high chemical oxygen demand wastewater using anaerobic treatment with ceramic membranes. We also provide post-treatment using microbial fuel cells.
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公开(公告)号：US10538445B2
公开(公告)日：2020-01-21
申请号：US15671625
申请日：2017-08-08
IPC分类号： B01D1/00 , B01D3/00 , C02F1/04 , C02F1/44 , C02F1/52 , C02F1/56 , C02F1/66 , C02F9/00 , C02F11/00 , B01D9/00 , C02F11/12
摘要： We provide a process for treatment of produced water, including but not limited to water produced by a “steam flood” process for extraction of oil from oil sands, including the removal of color from the water. This removal may be accomplished through addition of color-removal polymers and flocculents. This process may also be useful for other water treatment processes including reverse osmosis and filtration.
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公开(公告)号：US20190092667A1
公开(公告)日：2019-03-28
申请号：US16201397
申请日：2018-11-27
IPC分类号： C02F3/34 , C02F1/00 , C02F1/467 , C02F1/66 , C02F3/10 , C02F101/10 , C02F103/18 , C02F103/10 , C02F101/16 , C02F101/20
CPC分类号： C02F3/34 , C02F1/001 , C02F1/4676 , C02F1/66 , C02F3/06 , C02F3/10 , C02F3/105 , C02F3/30 , C02F9/00 , C02F2101/101 , C02F2101/106 , C02F2101/163 , C02F2101/20 , C02F2103/10 , C02F2103/18 , C02F2303/16 , C02F2305/06 , Y02W10/15
摘要： A process for removal of selenium and nitrate from waste water includes both electrochemical and bioprocessing treatment. Embodiments include use of activated walnut shell a growth media for selenium-reducing bacteria.
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公开(公告)号：US20170233272A1
公开(公告)日：2017-08-17
申请号：US15433894
申请日：2017-02-15
CPC分类号： C02F3/34 , C02F1/001 , C02F1/4676 , C02F1/66 , C02F3/06 , C02F3/10 , C02F3/105 , C02F3/30 , C02F9/00 , C02F2101/101 , C02F2101/106 , C02F2101/163 , C02F2101/20 , C02F2103/10 , C02F2103/18 , C02F2303/16 , C02F2305/06 , Y02W10/15
摘要： A process for removal of selenium and nitrate from waste water includes both electrochemical and bioprocessing treatment. Embodiments include use of activated walnut shell a growth media for selenium-reducing bacteria.
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公开(公告)号：US20240286939A1
公开(公告)日：2024-08-29
申请号：US18583350
申请日：2024-02-21
IPC分类号： C02F3/30 , C02F3/00 , C02F101/10
CPC分类号： C02F3/301 , C02F3/308 , C02F2003/003 , C02F2101/105 , C02F2209/06 , C02F2209/18 , C02F2209/22
摘要： An enhanced granular sludge bed (AGBR) process for wastewater treatment, including use of fluidized bed media and process control by regulating redox reaction conditions, is provided. Further embodiments may relate to multiple stage biological processes with fluidized bed media for simultaneous removal of carbon and nutrient from wastewater.
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公开(公告)号：US20230159358A1
公开(公告)日：2023-05-25
申请号：US18056985
申请日：2022-11-18
发明人： Ravi Chidambaran
CPC分类号： C02F1/467 , C02F1/50 , C02F2303/20 , C02F2101/306
摘要： A method for mitigating formation of biofilm in a water system using predictive analysis of biofilm growth. An electrical current to the water system is used to deactivate bacteria and mitigate biofilm formation. The method also allows for optional dosing of the water system with biocide. A system is also used for mitigating formation of biofilm in a water system, made of a bacterial deactivator, a biofouling sensor, a biofouling potential analyzer, and a controller to synthesize data from the analyzer and sensor to model and predict biofouling events and operate the bacterial deactivator based upon the modeling and prediction.
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