公开(公告)号：US20240317616A1

公开(公告)日：2024-09-26

申请号：US18689667

申请日：2022-08-30

Applicant: EVOQUA WATER TECHNOLOGIES LLC

Inventor： Simon Paul Dukes ,  Joshua W. Griffis ,  Yang Chen ,  George Y. Gu

IPC: C02F1/48 ,  C02F1/24

CPC classification number: C02F1/48 ,  C02F1/24 ,  C02F2303/26 ,  C02F2305/023

Abstract: Systems and methods for treating water containing PFAS are disclosed. Plasma activated excited gas is encapsulated with nanobubbles in water comprising PFAS to be treated. Liquid-phase reaction of the PFAS with the encapsulated plasma activated excited gas at the air-water interface of the nanobubbles is promoted. The PFAS can be concentrated upstream of the plasma reactor. A foam fractionation process may be used in conjunction with the plasma reactor to facilitate PFAS removal.

公开(公告)号：US20240208848A1

公开(公告)日：2024-06-27

申请号：US18580974

申请日：2022-07-13

Applicant: EVOQUA WATER TECHNOLOGIES LLC

Inventor： Simon Paul Dukes ,  Savvas Hadjikyriacou

IPC: C02F9/00 ,  C02F1/02 ,  C02F1/28 ,  C02F1/44 ,  C02F1/72 ,  C02F101/10 ,  C02F101/16 ,  C02F101/36

CPC classification number: C02F9/00 ,  C02F1/02 ,  C02F1/283 ,  C02F1/285 ,  C02F1/44 ,  C02F1/72 ,  C02F2101/101 ,  C02F2101/16 ,  C02F2101/36 ,  C02F2303/16

Abstract: Methods of treating water containing PFAS are disclosed. The methods include dosing water containing PFAS with a removal material, e.g., adsorption media, to promote loading of the removal material, e.g., adsorption media, with PFAS. The methods include producing a slurry stream including the PFAS-loaded removal material. e.g., adsorption media. The methods include subjecting the slurry stream to a supercritical water oxidation (SCWO) process. The SCWO process is driven at least in part by a predetermined calorific value of the removal material, e.g., adsorption media. Systems for treating water containing PFAS are also disclosed. Systems include a contact reactor containing removal material. e.g., adsorption media; a source of water comprising PFAS fluidly connected to an inlet of the contact reactor; a separation system fluidly connected downstream of the contact reactor; and SCWO reactor fluidly connected downstream of the separation system.

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：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：US11414330B2

公开(公告)日：2022-08-16

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: C02F1/467 ,  C02F1/461 ,  C25B9/23 ,  C02F103/08 ,  C25B1/26 ,  C25B15/02 ,  C25B15/031 ,  C25B9/17 ,  C25B15/029 ,  C25B1/30 ,  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：US11802063B2

公开(公告)日：2023-10-31

申请号：US16491753

申请日：2018-03-06

Applicant: Evoqua Water Technologies LLC

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

IPC: 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: 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 applying the current in a pulsed waveform 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 apply the current in a pulsed waveform 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：US20210139351A1

公开(公告)日：2021-05-13

申请号：US16491753

申请日：2018-03-06

Applicant: Evoqua Water Technologies LLC

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

IPC: C02F1/467 ,  C02F1/461 ,  C25B1/30 ,  C25B9/17 ,  C25B15/031 ,  C25B15/029

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 applying the current in a pulsed waveform 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 apply the current in a pulsed waveform 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.