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    Internal electrical connections for concentric tubular electrochemical cells
    101.
    发明申请
    Internal electrical connections for concentric tubular electrochemical cells 有权

    公开(公告)号：US20210107812A1

    公开(公告)日：2021-04-15

    申请号：US16603017

    申请日：2018-04-13

    Applicant: Evoqua Water Technologies LLC

    Inventor： Andrew Green ,  Li-Shiang Liang ,  Joshua Griffis ,  Paul Beddoes

    IPC: C02F1/461 ,  C02F1/467

    Abstract: Self-cleaning electrochemical cells, systems including self-cleaning electrochemical cells, and methods of operating self-cleaning electrochemical cells are disclosed. The self-cleaning electrochemical cell can include a plurality of concentric electrodes disposed in a housing, a fluid channel defined between the concentric electrodes, and an electrical connector positioned at a distal end of a concentric electrode and electrically connected to the electrode. The electrical connectors may be configured to provide a substantially even current distribution to the concentric electrode and minimize a zone of reduced velocity occurring downstream from the electrical connector. The electrical connector may be configured to cause a temperature of an electrolyte solution to increase by less than about 0.5° C. while transmitting at least 100 W of power.

    Antioxidant Protection for Ion Exchange Resins
    104.
    发明申请
    Antioxidant Protection for Ion Exchange Resins 有权

    公开(公告)号：US20210001323A1

    公开(公告)日：2021-01-07

    申请号：US16969548

    申请日：2019-02-12

    Applicant: Evoqua Water Technologies LLC

    Inventor： Gregory Bachman ,  Marty Wilkes

    IPC: B01J49/60 ,  B01J49/53 ,  C02F1/42 ,  B01J47/14

    Abstract: Methods of stabilizing virgin ion exchange resin material are provided. The methods include cleansing the virgin ion exchange resin material with a preparation comprising a non-ionic detergent. The methods include cleansing the virgin ion exchange resin material with a preparation comprising an alcohol solvent. The methods include rinsing virgin ion exchange resin material with deoxygenated water. the methods include introducing the cleansed/rinsed virgin ion exchange resin material into a gas impermeable vessel and hermetically sealing the vessel. The methods include introducing an oxygen scavenging material into the gas impermeable vessel, and hermetically sealing the vessel. A method of facilitating water treatment in a site in need thereof by providing a cleansed virgin ion exchange resin material in deoxygenated water is also disclosed.

    Ballasted solids treatment system and method
    105.
    发明授权
    Ballasted solids treatment system and method 有权

    公开(公告)号：US10829402B2

    公开(公告)日：2020-11-10

    申请号：US16307671

    申请日：2017-06-07

    Applicant: Evoqua Water Technologies LLC

    Inventor： Timothy Lindemann ,  Michael Casey Whittier

    IPC: C02F9/00 ,  C02F3/12 ,  C02F1/48 ,  C02F1/52 ,  C02F1/56 ,  C02F11/04 ,  C02F1/28 ,  C02F11/147 ,  C02F11/145 ,  C02F11/127 ,  C02F103/32 ,  C02F103/34

    Abstract: Disclosed are apparatus and methods for treating wastewater. In one example a system for treating wastewater treatment is provided. The system comprises a biological reactor having an inlet in fluid communication with a source of wastewater and an outlet, the biological reactor configured to treat wastewater from the source of wastewater and output a biologically treated wastewater from the outlet, a solids-liquid separation system having an inlet in fluid communication with the outlet of the biological reactor and configured to separate the biologically treated wastewater into a solids-lean effluent and a solids-rich waste activated sludge (WAS), a treatment subsystem comprising a digester, an inlet in fluid communication with a WAS outlet of the solids-liquid separation system, and an outlet for providing ballasted and digested WAS, and a ballast feed system configured to deliver ballast to one of the biological reactor and the treatment subsystem.

    Fluid flow distribution device
    110.
    发明授权
    Fluid flow distribution device 有权

    公开(公告)号：US10441920B2

    公开(公告)日：2019-10-15

    申请号：US15910653

    申请日：2018-03-02

    Applicant: Evoqua Water Technologies LLC

    Inventor： Bruce Gregory Biltoft ,  Zhiyi Cao ,  Jen Thai Law ,  Huw Alexander Lazaredes

    IPC: B01D63/02 ,  B01D65/02

    Abstract: In a first membrane filtration module comprises a membrane module comprising a plurality of permeable hollow membranes; a fluid distribution device adapted to removably surround at least a portion of the membranes of the membrane module, the fluid distribution device comprising a plurality of through-hole openings for distributing a fluid, and the fluid distribution device adapted to distribute a flow of fluid along a surface of the permeable hollow membranes. In a second membrane filtration device comprises a membrane module comprising a plurality of permeable hollow membranes, each of the permeable hollow membranes having a surface; and a gas distribution device: adapted to distribute gas bubbles to the surface of the permeable hollow membrane, adapted to removably surround at least a portion of the plurality of permeable hollow membranes, and defining a plurality of through openings for distributing the gas bubbles to the membranes.

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