公开(公告)号：US20220064036A1

公开(公告)日：2022-03-03

申请号：US17233632

申请日：2021-04-19

Applicant: Evoqua Water Technologies LLC

Inventor： Christopher K. Waul ,  Argun Olcayto Erdogan

IPC: C02F3/12 ,  B01F5/02 ,  B01F13/02 ,  B01F15/00

Abstract: A method and system for treating wastewater is disclosed. In one example the method comprises activating a mixing system that imparts a motive force on wastewater in a vessel, measuring at least one property of a first portion of the wastewater at a first time, measuring the at least one property of a second portion of the wastewater at a second time subsequent to the first time, calculating a difference between the at least one property measured at the first time and the at least one property measured at the second time, performing a determination of whether the difference is within a predetermined allowable range of differences, and responsive to a result of the determination, controlling a component of the mixing system.

公开(公告)号：US11148963B2

公开(公告)日：2021-10-19

申请号：US16465215

申请日：2017-11-30

Applicant: Evoqua Water Technologies LLC

Inventor： Lars Nupnau

IPC: C02F1/467 ,  C02F1/00 ,  C02F1/28 ,  C02F1/32 ,  C02F1/70 ,  C02F103/00 ,  C02F103/02 ,  B63J4/00

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

公开(公告)号：US20210309548A1

公开(公告)日：2021-10-07

申请号：US17099112

申请日：2020-11-16

Applicant: Evoqua Water Technologies LLC

Inventor： Timothy Lee Lindemann ,  Michael Casey Whittier

IPC: C02F3/00 ,  C02F3/12 ,  G16H10/40

Abstract: A sequencing batch reactor includes a liquid level sensor configured to measure a level of liquid in the vessel and provide an indication of the level of the liquid to a controller and a sludge detector configured to measure a position of an interface between sludge and solids-lean supernatant in the vessel and to provide an indication of the position of the interface to the controller. The controller is configured to perform a comparison between the level of the liquid and the position of the interface and control an amount of solids-lean supernatant removed from the vessel during the decant stage based on the comparison.

公开(公告)号：US11130077B2

公开(公告)日：2021-09-28

申请号：US16493932

申请日：2018-03-13

Applicant: Evoqua Water Technologies LLC

Inventor： Donald W. Hindman ,  Krishna Kamath

IPC: B01D21/20 ,  F16G13/06 ,  B01D21/24 ,  C02F11/00

Abstract: A settling basin of a wastewater treatment system includes a collector chain including chain links having a plurality of side bars, stepped connecting pins configured to join the plurality of side bars and including a first end including a head portion having a cross-sectional area larger than portions of the plurality of side bars through which the stepped connecting pin extends, end caps configured to receive second ends of the stepped connecting pins, and apertures defined in the end caps and second ends of the stepped connecting pins configured to receive a retaining element that holds the end caps in position on the second ends of the stepped connecting pins.

公开(公告)号：US20210179449A1

公开(公告)日：2021-06-17

申请号：US17268448

申请日：2019-08-14

Applicant: Evoqua Water Technologies LLC

Inventor： Adam M. Redding

IPC: C02F1/28 ,  C01B32/36

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：US20210138368A1

公开(公告)日：2021-05-13

申请号：US17102597

申请日：2020-11-24

Applicant: Evoqua Water Technologies LLC

Inventor： Marco Braschi ,  Roberto Negrini

IPC: B01D33/23 ,  B01D29/07 ,  B01D29/41 ,  B01D33/21 ,  B01D29/01 ,  B01D33/067 ,  B01D33/11

Abstract: The present invention relates to a filtering panel (100) for a disk filter and a disk filter for water purification, comprising a metal filter cloth (16, 116) such as a stainless steel filter cloth, pre-tensioned in both warp and weft directions and fastened to a frame (10, 110) comprising a peripheral portion (11, 111), which is integral with an inner grillwork (12) and which divides the inner area of the peripheral portion (11, 111) into fields (15, 115). The frame (10, 110) comprises a plastic material reinforced with glass fibers or carbon fibres such as polypropylene loaded with fibreglass in an amount of at least 20 weight percent. Each field of the grillwork (12, 112) has an area not exceeding 10% of the inner area of the peripheral portion (11, 111). The pre-tensioning of the filter cloth (16, 116) in both directions is from at least 20% of the yield stress of the cloth (16, 116). Further the present invention relates to a disk filter comprising said filtering panels (100) and method of making said filtering panel (100).

公开(公告)号：US20210086138A1

公开(公告)日：2021-03-25

申请号：US16954517

申请日：2018-12-20

Applicant: Evoqua Water Technologies LLC

Inventor： Michael Gullion ,  Christopher Hall ,  Joshua Hawley

IPC: B01D65/02 ,  C02F1/44 ,  B01D61/14 ,  B01D61/20 ,  B01D61/22 ,  F28F19/02 ,  G01N15/06

Abstract: A conditioning system for a filter module is disclosed. The conditioning system may generally include an inlet, a heat exchanger, a magnetically levitated pump, a channel provided to bypass the heat exchanger, a controller, an outlet, and a base. The system may have components lined with corrosion-resistant materials. A method of conditioning a filter module is also disclosed. The method may generally include measuring TOC in a source of ultrapure water, heating the ultrapure water, rinsing a filter module with the heated water, flushing the filter module with ambient temperature water, and repeating the rinsing with heated water and flushing with ambient temperature water. A method of facilitating conditioning of the filter module is also disclosed. The method may generally include providing a portable filter module conditioning system and providing instructions for installation or use.

公开(公告)号：US20210047218A1

公开(公告)日：2021-02-18

申请号：US16979855

申请日：2019-03-12

Applicant: Evoqua Water Technologies LLC

Inventor： Nathan Antonneau

IPC: C02F9/00

Abstract: A wastewater treatment system including a contact tank, a dissolved air flotation unit, a fermentation unit, and a biological treatment unit is disclosed. A method of retrofitting a wastewater treatment system by arranging the wastewater treatment system such that floated biosolids are fermented in an anerobic environment and fluidly connecting the biological treatment unit to receive at least a portion of the fermented solids is also disclosed. The method optionally includes providing a fermentation unit and fluidly connecting the fermentation unit to a biological treatment unit. A method of treating wastewater including combining the wastewater with activated sludge, floating biosolids from the activated wastewater, fermenting the floated biosolids, and biologically treating the effluent with the fermented solids is also disclosed. A method of facilitating delivery of soluble organic carbon to a biological treatment unit is also disclosed.

公开(公告)号：US20200381761A1

公开(公告)日：2020-12-03

申请号：US16771278

申请日：2018-12-13

Applicant: Evoqua Water Technologies LLC

Inventor： George Y. Gu ,  Savvas Hadjikyriacou ,  Michael J. Shaw ,  Simon P. Dukes

IPC: H01M8/18 ,  H01M8/0245 ,  B01J41/13

Abstract: A flow battery having at least one rechargeable cell is disclosed. The at least one rechargeable cell can include an anolyte compartment, a catholyte compartment, and an anion exchange membrane positioned between the anolyte and catholyte compartments. The anion exchange membrane can have a thickness of less than 100 μm and a steady state diffusivity of less than 0.4 ppm/hr/cm2 with respect to a cation species in an electrolyte of the rechargeable cell. A method of facilitating use of a flow battery including providing the anion exchange membrane is also disclosed. A method of facilitating storage of an electric charge comprising providing the flow battery is also disclosed. A method of producing an anion exchange membrane is also disclosed.

公开(公告)号：US10814280B2

公开(公告)日：2020-10-27

申请号：US15567398

申请日：2016-04-22

Applicant: Evoqua Water Technologies LLC

Inventor： Joshua Griffis ,  Li-Shiang Liang

IPC: C02F1/469 ,  B01D61/46 ,  B01D61/48 ,  B01D61/50 ,  B01D61/52 ,  B01D61/42 ,  B01D25/26

Abstract: A module comprises a cell stack having a plurality of alternating ion depleting compartments and ion concentrating compartments, an inlet manifold configured to facilitate a flow of fluid into the cell stack, and a first flow distribution system, associated with the inlet manifold, including a first ramp to promote the circulation of the flow of fluid into the cell stack.