公开(公告)号：US20240336507A1

公开(公告)日：2024-10-10

申请号：US18560118

申请日：2022-05-26

Applicant: Evoqua Water Technologies LLC

Inventor： Simon P Dukes ,  Joshua Griffis ,  Li-Shiang Liang ,  Harshita Gogoi ,  Wenxin Du ,  Thomas K Mallmann

IPC: C02F9/00 ,  B01D61/02 ,  B01D61/14 ,  B01D61/16 ,  B01D61/58 ,  C02F1/00 ,  C02F1/44 ,  C02F1/52 ,  C02F1/66 ,  C02F5/00 ,  C02F101/14 ,  C02F103/34

CPC classification number: C02F9/00 ,  B01D61/16 ,  B01D61/58 ,  B01D61/026 ,  B01D61/027 ,  B01D61/029 ,  B01D61/145 ,  B01D2311/04 ,  B01D2311/08 ,  B01D2317/025 ,  B01D2317/08 ,  C02F1/004 ,  C02F1/441 ,  C02F1/442 ,  C02F1/444 ,  C02F1/5236 ,  C02F1/66 ,  C02F5/00 ,  C02F2101/14 ,  C02F2103/34 ,  C02F2301/08

Abstract: A system for the treatment of phosphate-containing wastewater comprises a pretreatment subsystem including a mixing chamber configured to mix a potassium-based salt with the wastewater to precipitate K2SiF6 from the wastewater, a solids-liquid separator to separate the precipitated K2SiF6 from the wastewater and form a pretreated wastewater, and a mixing chamber to dilute the pretreated wastewater with raw wastewater, and a filtration subsystem including a first filtration configured to receive the pretreated wastewater and remove particles to form a first effluent, a second filtration unit remove divalent ions from the first effluent and form a second effluent, and a third filtration unit configured to remove additional dissolved solids from the second effluent and form a third effluent suitable for discharge to the environment.

公开(公告)号：US12017183B2

公开(公告)日：2024-06-25

申请号：US18209457

申请日：2023-06-13

Applicant: Evoqua Water Technologies LLC

Inventor： Michael J. Muse ,  Joshua Griffis ,  Li-Shiang Liang ,  Michael Shaw ,  Simon P. Dukes

IPC: B01D61/48 ,  B01D61/50 ,  B01D63/08 ,  B01D65/00 ,  C02F1/469

CPC classification number: B01D65/003 ,  B01D61/50 ,  B01D63/085 ,  C02F1/4693 ,  C02F1/4695 ,  B01D2313/04 ,  C02F2201/004

Abstract: An electrochemical separation device includes a first electrode, a second electrode, and a cell stack including a plurality of sub-blocks each having alternating depleting compartments and concentrating compartments and each including frame and channel portions disposed between the first electrode and the second electrode. An internal seal formed of a first material is disposed between and in contact with the channel portions between adjacent sub-blocks in the cell stack and configured to prevent leakage between depleting compartments and concentrating compartments in the adjacent sub-blocks. An external seal formed of a second material having at least one material parameter different from the first material is disposed between and in contact with the frames of the adjacent sub-blocks in the cell stack and configured to prevent leakage from an internal volume of the electrochemical separation device to outside of the electrochemical separation device.

公开(公告)号：US20210395911A1

公开(公告)日：2021-12-23

申请号：US16491781

申请日：2018-03-06

Applicant: Evoqua Water Technologies LLC

Inventor： Simon Paul Dukes ,  George Gu ,  Joshua Griffis ,  Michael Shaw

IPC: C25B15/029 ,  C25B1/04

Abstract: A method of operating an electrochemical cell including introducing an aqueous solution into the electrochemical cell, applying a current across an anode and a cathode to produce a product, monitoring the voltage, dissolved hydrogen, or a condition of the aqueous solution, and reversing polarity of the anode and the cathode responsive to one of the measured parameters is disclosed. An electrochemical system including an electrochemical cell including an anode and a cathode, a source of an aqueous solution having an outlet fluidly connectable to the electrochemical cell, a sensor for measuring a parameter, and a controller configured to cause the anode and the cathode to reverse polarity responsive to the parameter measurement is disclosed. Methods of suppressing accumulation of hydrogen gas within the electrochemical cell are also disclosed. Methods of facilitating operation of an electrochemical cell are also disclosed.

公开(公告)号：US20250059077A1

公开(公告)日：2025-02-20

申请号：US18848252

申请日：2023-03-14

Applicant: Evoqua Water Technologies LLC

Inventor： Thomas Kenneth Mallmann ,  Simon P. Dukes ,  Joshua Griffis ,  Mohsen Ghafari

IPC: C02F9/00 ,  C02F1/28 ,  C02F1/42 ,  C02F3/12 ,  C02F11/08 ,  C02F11/12 ,  C02F101/10 ,  C02F101/16 ,  C02F101/34 ,  C02F101/36

Abstract: Systems and methods for treating water containing PFAS are disclosed. A bioreactor and a supercritical water oxidation (SCWO) system may be implemented to provide a complete chain of separation and destruction of PFAS to treat contaminated water. Adsorption media may be added to facilitate the removal of PFAS from water.

公开(公告)号：US20240308885A1

公开(公告)日：2024-09-19

申请号：US18509281

申请日：2023-11-14

Applicant: Evoqua Water Technologies LLC ,  Evoqua Water Technologies Limited

Inventor： Joshua Griffis ,  Simon P Dukes ,  Paul Beddoes ,  Peter G Rogers

IPC: C02F1/461 ,  C02F1/467

CPC classification number: C02F1/46104 ,  C02F1/4674 ,  C02F2001/46171 ,  C02F2201/003 ,  C02F2201/007 ,  C02F2201/4614 ,  C02F2201/46145 ,  C02F2209/006 ,  C02F2209/008 ,  C02F2209/40 ,  C02F2301/08 ,  C02F2303/04

Abstract: An electrochlorination system comprises a source of feed fluid, a product fluid outlet, and a plurality of electrochemical cells connected fluidically between the source of feed fluid and the product fluid outlet. The system is configured to operate at least one of the plurality of electrochemical cells at one of a first current density or a first flow rate, and to operate another of the plurality of electrochemical cells at a second current density or second flow rate different from the respective first current density or first flow rate.

公开(公告)号：US20240034648A1

公开(公告)日：2024-02-01

申请号：US18377823

申请日：2023-10-08

Applicant: Evoqua Water Technologies LLC

Inventor： Joshua Griffis ,  George Gu ,  Simon P. Dukes ,  Michael J. Shaw

IPC: C02F1/467 ,  C02F1/461

CPC classification number: C02F1/4674 ,  C02F1/46104 ,  C25B9/23

Abstract: An electrochemical cell including a first chamber having an anode, a second chamber having a cathode, at least one ionic connection between the first chamber and the second chamber, such that liquid electrolyte from the first chamber is prevented from mixing with liquid electrolyte in the second chamber is provided. The first chamber and the second chamber can be arranged in parallel and positioned remotely from each other. An electrochemical system including the electrochemical cell, and first and second sources of saline aqueous solutions is also provided. Water treatment systems are also provided. A method of operating an electrochemical cell including introducing first and second saline aqueous solutions into first and second chambers of the electrochemical cell, and applying a current across the anode and the cathode to generate first and second products, respectively is also provided. A method of facilitating operation of an electrochemical cell is also provided.

公开(公告)号：US11795074B2

公开(公告)日：2023-10-24

申请号：US16491728

申请日：2018-03-06

Applicant: EVOQUA WATER TECHNOLOGIES LLC

Inventor： George Y. Gu ,  Simon Paul Dukes ,  Joshua Griffis ,  Michael J. Shaw

IPC: C02F1/46 ,  C02F1/467 ,  C02F1/461 ,  C25B9/23 ,  C02F103/08 ,  C25B1/26 ,  C25B15/02 ,  C25B15/031 ,  C25B9/17 ,  C25B15/029 ,  C25B1/30 ,  C25B1/04

CPC classification number: C02F1/4674 ,  C02F1/46104 ,  C02F2103/08 ,  C02F2201/4613 ,  C02F2201/4614 ,  C02F2201/46115 ,  C02F2201/46135 ,  C02F2201/46145 ,  C02F2201/46175 ,  C02F2209/04 ,  C02F2209/06 ,  C02F2209/23 ,  C02F2209/30 ,  C02F2209/40 ,  C02F2303/04 ,  C25B1/04 ,  C25B1/26 ,  C25B1/30 ,  C25B9/17 ,  C25B9/23 ,  C25B15/02 ,  C25B15/029 ,  C25B15/031

Abstract: An electrochemical cell including a first chamber having an anode, a second chamber having a cathode, at least one ionic connection between the first chamber and the second chamber, such that liquid electrolyte from the first chamber is prevented from mixing with liquid electrolyte in the second chamber is provided. The first chamber and the second chamber can be arranged in parallel and positioned remotely from each other. An electrochemical system including the electrochemical cell, and first and second sources of saline aqueous solutions is also provided. Water treatment systems are also provided. A method of operating an electrochemical cell including introducing first and second saline aqueous solutions into first and second chambers of the electrochemical cell, and applying a current across the anode and the cathode to generate first and second products, respectively is also provided. A method of facilitating operation of an electrochemical cell is also provided.

公开(公告)号：US11673096B2

公开(公告)日：2023-06-13

申请号：US16630226

申请日：2018-07-11

Applicant: Evoqua Water Technologies LLC

Inventor： Michael J. Muse ,  Joshua Griffis ,  LI-Shiang Liang ,  Michael Shaw ,  Simon P. Dukes

IPC: B01D61/48 ,  B01D65/00 ,  B01D61/50 ,  B01D63/08 ,  C02F1/469

CPC classification number: B01D65/003 ,  B01D61/50 ,  B01D63/085 ,  C02F1/4693 ,  C02F1/4695 ,  B01D2313/04 ,  C02F2201/004

Abstract: An electrochemical separation device includes a first electrode, a second electrode, and a cell stack including a plurality of sub-blocks each having alternating depleting compartments and concentrating compartments and each including frame and channel portions disposed between the first electrode and the second electrode. An internal seal formed of a first material is disposed between and in contact with the channel portions between adjacent sub-blocks in the cell stack and configured to prevent leakage between depleting compartments and concentrating compartments in the adjacent sub-blocks. An external seal formed of a second material having at least one material parameter different from the first material is disposed between and in contact with the frames of the adjacent sub-blocks in the cell stack and configured to prevent leakage from an internal volume of the electrochemical separation device to outside of the electrochemical separation device.

公开(公告)号：US10800678B2

公开(公告)日：2020-10-13

申请号：US15760400

申请日：2016-09-16

Applicant: Evoqua Water Technologies, LLC

Inventor： Joseph D. Gifford ,  Joshua Griffis ,  Simon P. Dukes ,  Li-Shiang Liang ,  Michael J. Shaw ,  Frederick C. Wilkins

IPC: C02F1/467 ,  C25B1/26 ,  C25B15/02 ,  C02F1/461 ,  C25B15/08 ,  C25B3/04 ,  C02F103/00 ,  C02F103/02 ,  C02F103/08

Abstract: An electrochlorination system comprising an electrochemical cell including a housing having an inlet, an outlet, and an anode-cathode pair disposed within the housing, a source of a chloride-containing aqueous solution having an outlet fluidly connectable to the inlet of the electrochemical cell, and a source of an oxidizing agent fluidly connectable to the source of chloride-containing aqueous solution upstream of the electrochemical cell.

公开(公告)号：US12180103B2

公开(公告)日：2024-12-31

申请号：US16287203

申请日：2019-02-27

Applicant: Evoqua Water Technologies LLC

Inventor： Gary C Ganzi ,  Joshua Griffis ,  Simon Dukes ,  Li-Shiang Liang ,  Darren Adrian Dale ,  Michael Shaw ,  Paul Beddoes ,  George Gu

IPC: C02F9/00 ,  C02F1/44 ,  C02F1/467 ,  C02F1/20 ,  C02F1/461 ,  C02F1/469 ,  C02F1/66 ,  C02F1/74 ,  C02F101/10 ,  C02F101/16 ,  C02F103/08

Abstract: A water treatment system for producing potable water and water for irrigation from saline water, the system includes an electrodialysis apparatus including one or more monovalent selective membranes and having an inlet fluidly connectable to a source of water to be treated, a diluate outlet, and a concentrate outlet, a nanofiltration apparatus positioned downstream of the electrodialysis apparatus and having an inlet fluidly connectable to the diluate outlet of the electrodialysis apparatus, a permeate outlet, and a retentate outlet, and an electrolyzer in fluid communication with one of the concentrate outlet and the retentate outlet, and configured to generate a product stream including one or more of chlorine gas, hypochlorite ion, sodium hydroxide, sulfuric acid, hydrochloric acid, or sodium hypochlorite.