公开(公告)号：US20230150836A1

公开(公告)日：2023-05-18

申请号：US17799436

申请日：2021-02-12

Applicant: Evoqua Water Technologies LLC

Inventor： SCOTT BRANUM ,  MARC GAU ,  CALVIN HORST

IPC: C02F1/00 ,  C02F1/74

CPC classification number: C02F1/008 ,  C02F1/74 ,  C02F2101/101

Abstract: A wastewater treatment management system including a plurality of monitoring stations, a treating station for introducing a treating agent to wastewater, and a principal processing facility for controlling a dose of the treating agent. A system configured to treat a wastewater stream collection system including a source of a treating agent, a metering valve, a sensor, and a controller operatively connected to the metering valve and the sensor. A non-transitory computer-readable medium including instruction that instruct a controller to perform a method of controlling addition of a treating agent into a wastewater stream collection system. A controller for a system configured to treat odor and control corrosion in a wastewater stream collection system that is operatively connectable to a metering valve for administering a treating agent to a wastewater stream collection system.

公开(公告)号：US20230130585A1

公开(公告)日：2023-04-27

申请号：US17914156

申请日：2021-03-23

Applicant: Evoqua Water Technologies LLC

Inventor： SIMON P. DUKES ,  GEORGE GU ,  SAVVAS HADJIKYRIACOU ,  YANG CHEN

IPC: C02F1/469 ,  C02F1/42 ,  B01D69/02

Abstract: Methods of treating a waste stream containing perfluoroalkyl substances (PFAS) are disclosed. The methods include directing the waste stream to a dilution compartment of an electrochemical separation device, directing a treatment stream to a concentration compartment of the electrochemical separation device, and applying a voltage across the electrodes to produce a dilute stream substantially free of the PFAS and a concentrate stream. At least one of the waste stream and the treatment stream comprises a water miscible organic solvent. Methods of concentrating PFAS from a wastewater are also disclosed. PFAS concentration systems are also disclosed. The systems include a column comprising an ion exchange resin and an electrochemical separation device having a dilution compartment fluidly connected to an outlet of the column. Methods of facilitating treatment of a waste stream containing PFAS are also disclosed.

公开(公告)号：US20230018120A1

公开(公告)日：2023-01-19

申请号：US17632431

申请日：2020-07-31

Applicant: Evoqua Water Technologies LLC

Inventor： JOSHUA GRIFFIS ,  BENJAMIN SATTERFIELD ,  SIMON DUKES ,  GEORGE GU ,  YANG CHEN

IPC: C02F1/467 ,  C02F1/32 ,  C25B1/30 ,  C25B15/02

Abstract: A water treatment system comprises an actinic radiation reactor, an electrochemical cell configured to produce hydrogen peroxide and having an outlet in fluid communication between a source of electrolyte and the actinic radiation reactor, and a source of oxygen in communication with an inlet of the electrochemical cell.

公开(公告)号：US11541333B2

公开(公告)日：2023-01-03

申请号：US16648424

申请日：2018-09-17

Applicant: Evoqua Water Technologies LLC

Inventor： Steven Nicolich

IPC: B01D24/48 ,  B01D24/02 ,  B01D24/46 ,  B01D35/143 ,  C02F1/00 ,  C02F103/20 ,  C02F103/42

Abstract: A system for treating water for use in aquatics or recreational facilities is disclosed. The system includes a media filter vessel, a pressure sensor, and a monochromatic light source. A method of treating water for use in aquatics or recreational facilities is also disclosed. The method includes fluidly connecting a media filter vessel to a source of water for use in aquatics or recreational facilities, illuminating a media inside the media filter vessel, observing a monochromatic light source display a first indicator and observing a monochromatic light source display a second indicator. A method of retrofitting a media filter vessel is also disclosed. The method includes installing a pressure sensor on the media filter vessel, installing a monochromatic light source and operably connecting the monochromatic light source to a manual control and to the pressure sensor.

公开(公告)号：US20220402794A1

公开(公告)日：2022-12-22

申请号：US17617300

申请日：2020-01-08

Applicant: Evoqua Water Technologies LLC

Inventor： YANG CHEN ,  SIMON P. DUKES ,  ADRIAAN JEREMIASSE ,  WENXIN DU ,  SAVVAS E. HADJIKYRIACOU ,  THOMAS K. MALLMANN

IPC: C02F9/00 ,  C02F1/00

Abstract: A system for treating a source of water contaminated with PFAS is disclosed. The system includes a PFAS separation stage having an inlet fluidly connectable to the source of water contaminated with PFAS, a diluate outlet, and a concentrate outlet and a PFAS elimination stage positioned downstream of the PFAS separation stage and having an inlet fluidly connected to an outlet of the PFAS separation stage, the elimination of the PFAS occurring onsite with respect to the source of water contaminated with PFAS, with the system maintaining an elimination rate of PFAS greater than about 99%. A method of treating water contaminated with PFAS is also disclosed. The method includes introducing contaminated water from a source of water contaminated with a first concentration of PFAS to an inlet of a
PFAS separation stage, treating the contaminated water in the PFAS separation stage to produce a product water substantially free of PFAS and a PFAS concentrate having a second PFAS concentration greater than the first PFAS concentration, introducing the PFAS concentrate to an inlet of a PFAS elimination stage; and activating the PFAS elimination stage to eliminate the PFAS in the PFAS concentrate. A method of retrofitting a water treatment system as described herein is also disclosed. The method includes providing a PFAS elimination module as described herein and fluidly connecting the PFAS elimination module downstream of a PFAS separation stage.

公开(公告)号：US20220371914A1

公开(公告)日：2022-11-24

申请号：US17608011

申请日：2020-04-28

Applicant: Evoqua Water Technologies LLC

Inventor： PETER M. KEIS ,  ROBERT BRUCE TEMPLE ,  TRAVIS L. GABLE

IPC: C02F1/00 ,  B01D61/46 ,  B01D61/52 ,  B01D61/54 ,  C02F1/42

Abstract: A docking station at a service site fluidly connectable to a mobile water treatment system having one or more deionization units comprises a fluid inlet configured to receive processed water from the mobile water treatment system and a fluid outlet configured to deliver the processed water to a point of use. The docking station also comprises a monitoring system configured to monitor at least one water quality parameter of the processed water, and a processor configured to receive the monitored water quality parameter and communicate with a central monitoring system disposed remotely from the station regarding the monitored water quality parameter.

公开(公告)号：US11505659B2

公开(公告)日：2022-11-22

申请号：US17109497

申请日：2020-12-02

Applicant: Evoqua Water Technologies LLC

Inventor： Marty Wilkes

IPC: C08J3/28 ,  B01J47/04 ,  B01J47/06 ,  B01J41/05 ,  B01J39/05 ,  B01J47/016 ,  B01J39/18 ,  B01J41/12 ,  C02F1/42 ,  C02F101/10 ,  C02F101/12 ,  C02F103/02 ,  C02F103/34

Abstract: A method of producing treated ion exchange resin material includes exposing an enclosed vessel containing ion exchange resin and a pre-treatment solution to high energy radiation. The treated ion exchange resin material has reduced organic impurities or total organic carbon (TOC).

公开(公告)号：US20220259044A1

公开(公告)日：2022-08-18

申请号：US17470254

申请日：2021-09-09

Applicant: Evoqua Water Technologies LLC

Inventor： Philip Tinsley Dempster

IPC: C01B13/11 ,  A61L2/26 ,  A61L2/20 ,  A61L9/015 ,  C02F1/78

Abstract: An ozone generation system which is adaptable for supplying ozone to different medium and small application processes. The system has a source of feed gas, a corona discharge cell receiving the feed gas from the feed gas source and generating ozone for the application process, a flow controller measuring and managing the flow of the feed gas from the feed gas source to the corona discharge cell; and a regulator receiving gas from the corona discharge cell and sending the gas to the application process. The regulator maintains pressure in the corona discharge cell independent of the application process pressure.

公开(公告)号：US20220135455A1

公开(公告)日：2022-05-05

申请号：US17575057

申请日：2022-01-13

Applicant: Evoqua Water Technologies LLC

Inventor： Rohan Wikramanayake ,  Raymond G. Pepin ,  Thomas Miles

IPC: C02F3/12

Abstract: A system for treating metal-contaminated wastewater includes a primary treatment sub-system, a secondary treatment sub-system, and a tertiary treatment sub-system. The tertiary treatment sub-system includes a reactor tank, a source of ballast material, a source of coagulant, a solids-liquid separator, and a controller configured to recycle ballasted solids from the solids-liquid separator to the reactor tank an amount sufficient to generate metal hydroxide floc in the reactor tank to reduce a concentration of dissolved metal in the reactor tank.

公开(公告)号：US20210394884A1

公开(公告)日：2021-12-23

申请号：US17461990

申请日：2021-08-30

Applicant: Evoqua Water Technologies LLC

Inventor： Vadim Zolotarsky

IPC: B63J4/00 ,  C02F1/00 ,  C02F1/467 ,  C02F1/68

Abstract: Techniques and systems for neutralizing discharge waters from ballast and/or cooling water biocidal treatment and disinfection systems are provided. The systems utilize oxidation reduction potential control to regulate the dechlorination of a biocidal agent to allowable discharge levels in ship buoyancy systems and ship cooling water systems.