公开(公告)号：US12024442B2

公开(公告)日：2024-07-02

申请号：US17268448

申请日：2019-08-14

Applicant: Evoqua Water Technologies LLC

Inventor： Adam M. Redding

IPC: C02F1/28 ,  B01J20/20 ,  C01B32/36 ,  C02F101/36

CPC classification number: C02F1/283 ,  B01J20/20 ,  C01B32/36 ,  C02F1/288 ,  C01P2006/16 ,  C02F2101/36

Abstract: Modified activated carbon is disclosed for use in water treatment. In at least some embodiments, activated carbon may be treated with a positively-charged surfactant, i.e. a quaternary ammonium-based surfactant, to promote the removal of poly- and perfluorolkyl substances from water.

公开(公告)号：US20240190734A1

公开(公告)日：2024-06-13

申请号：US18554908

申请日：2022-05-17

Applicant: EVOQUA WATER TECHNOLOGIES LLC

Inventor： Calvin D. HORST ,  Michael Sumner MURPHY

IPC: C02F1/68 ,  C02F1/00

CPC classification number: C02F1/685 ,  C02F1/008 ,  C02F2209/006 ,  C02F2209/40 ,  C02F2303/02

Abstract: Methods of monitoring a chemical dosing subsystem for treating a fluid in a waste collection system are disclosed. The methods include deploying at least one sensor to the waste collection system, transmitting to an external controller data for a measured parameter of the fluid or treating agent, and comparing a treatment regimen determined responsive to the data to a reference protocol to determine whether the chemical dosing subsystem requires adjustment. Methods of treating a fluid in a waste collection system having a chemical dosing subsystem are also disclosed. Waste treatment management systems including a chemical dosing subsystem, a sensing subsystem, and an external controller are also disclosed. Methods of retrofitting a waste treatment management system are also disclosed.

公开(公告)号：US20240132389A1

公开(公告)日：2024-04-25

申请号：US18515814

申请日：2023-11-21

Applicant: Evoqua Water Technologies LLC

Inventor： Gary C. GANZI ,  Frederick C. WILKINS

IPC: C02F9/00 ,  B01D61/02 ,  B01D61/08 ,  B01D61/46 ,  B01D61/54 ,  B01D61/58

CPC classification number: C02F9/00 ,  B01D61/027 ,  B01D61/08 ,  B01D61/46 ,  B01D61/54 ,  B01D61/58 ,  B01D2311/06 ,  B01D2311/08 ,  B01D2311/12 ,  B01D2311/2642 ,  B01D2311/2649 ,  B01D2311/2684 ,  B01D2317/025 ,  B01D2317/08 ,  C02F1/004

Abstract: Water treatment systems including electrically-driven and pressure-driven separation apparatus configured to produce a first treated water suitable for use as irrigation water and a second treated water suitable for use as potable water from one of brackish water and saline water and methods of operation of same.

公开(公告)号：US20240043294A1

公开(公告)日：2024-02-08

申请号：US18484955

申请日：2023-10-11

Applicant: Evoqua Water Technologies LLC

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

IPC: C02F1/467 ,  C02F1/461

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

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：US11845677B2

公开(公告)日：2023-12-19

申请号：US17554251

申请日：2021-12-17

Applicant: Evoqua Water Technologies LLC

Inventor： Clinton W. Hulme

IPC: C02F1/44 ,  C02F1/02 ,  C02F103/02

CPC classification number: C02F1/441 ,  C02F1/02 ,  C02F2103/026 ,  C02F2201/005 ,  C02F2209/02 ,  C02F2209/03 ,  C02F2209/42

Abstract: A water purification system is disclosed which, includes a reverse osmosis (RO) system or component that is connectable to a city or other outside water feed that is capable of responding to and compensating for low or no feed water pressure coming into the RO system to ensure the outgoing supply of purified water is provided consistently and at a minimum water pressure. This can be accomplished without the need for communication with another device or system-wide facility, such as a hospital, or a pharmaceutical or semiconductor manufacturing system, requiring a constant water supply.

公开(公告)号：US11827550B2

公开(公告)日：2023-11-28

申请号：US18109263

申请日：2023-02-14

Applicant: Evoqua Water Technologies LLC

Inventor： Brandon Martin Olson

IPC: C02F3/12 ,  C02F3/00 ,  C02F3/30

CPC classification number: C02F3/1263 ,  C02F3/006 ,  C02F3/301 ,  C02F3/302 ,  C02F2209/006 ,  C02F2209/008 ,  C02F2209/04 ,  C02F2209/22 ,  C02F2209/44

Abstract: A method of operating a sequencing batch reactor process includes introducing wastewater to be treated into the sequencing batch reactor and subjecting the wastewater to treatment in the sequencing batch reactor in an aerated anoxic mode in in which a quantity of oxygen is supplied at a level insufficient to meet a biological oxygen demand of the wastewater, but sufficient to cause simultaneous nitrification and denitrification reactions to occur in the wastewater.

公开(公告)号：US11814305B2

公开(公告)日：2023-11-14

申请号：US16975125

申请日：2019-02-22

Applicant: Evoqua Water Technologies LLC ,  Evoqua Water Technologies Limited

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

IPC: C25B15/02 ,  C25B1/04 ,  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：US20230357059A1

公开(公告)日：2023-11-09

申请号：US18026119

申请日：2021-09-10

Applicant: Evoqua Water Technologies LLC

Inventor： TIMOTHY LINDEMANN

IPC: C02F1/48 ,  C02F1/52 ,  C02F1/28

CPC classification number: C02F1/481 ,  C02F1/488 ,  C02F1/52 ,  C02F1/28 ,  C02F2303/18

Abstract: Systems and methods for water treatment involving use of a magnetic ballast material to facilitate settling operations are provided. Magnetic ballast material is recovered downstream of clarification with a magnetic drum for reuse. At least one in-line magnetic recovery device augments the recovery of magnetic ballast material.

公开(公告)号：US20230331607A1

公开(公告)日：2023-10-19

申请号：US18026821

申请日：2021-09-16

Applicant: Evoqua Water Technologies LLC

Inventor： NICHOLAS A. BARCZEWSKI

IPC: C02F3/30

CPC classification number: C02F3/302 ,  C02F2209/08 ,  C02F2209/40 ,  C02F2209/22 ,  C02F2209/006 ,  C02F2103/001

Abstract: Methods of treating wastewater with a sequencing batch reactor (SBR) system having a plurality of SBRs are disclosed. The methods include operating each of the reactors in a batch flow mode, which includes controlling dissolved oxygen in the reactor to a concentration insufficient to meet a biological oxygen demand of the wastewater, but sufficient to cause simultaneous nitrification and denitrification reactions. The methods include determining an anticipated flow rate, selecting one or more reactor(s) capable of receiving wastewater in a continuous flow mode, and responsive to the anticipated flow rate being greater than one tolerated by the reactors, operating the selected reactor(s) in a continuous flow mode. Sequencing batch reactor systems including a plurality of SBRs, each having an aerator, a loading subsystem, and a controller are also disclosed.

公开(公告)号：US20230331595A1

公开(公告)日：2023-10-19

申请号：US17270852

申请日：2019-08-23

Applicant: Evoqua Water Technologies LLC

Inventor： Yang Chen ,  Simon P. Dukes

IPC: C02F1/467 ,  C02F1/00 ,  C02F1/461

CPC classification number: C02F1/4672 ,  C02F1/008 ,  C02F1/46109 ,  C02F2101/36

Abstract: Electrochemical treatment for the removal of poly- and perfluorolkyl substances from water is disclosed. An electrochemical cell may include a Magnéli phase titanium oxide electrode.