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AQUA Evoqua Water Technologies

113 patents

Page 4 of 6
GRANT
Utility
Structures for normalizing multi-planar flow distribution within an electrochemical separation system
26 Oct 20
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.
Joshua Griffis, Li-Shiang Liang
Filed: 21 Apr 16
GRANT
Utility
Reduced volume electrochlorination cells and methods of manufacturing same
19 Oct 20
An electrochemical cell includes a cathode and an anode disposed in a housing.
Joshua W. Griffis, Li-Shiang Liang, Paul Beddoes, Andrew Green, Simon P. Dukes, Jacob Telepciak
Filed: 16 Feb 16
GRANT
Utility
Biological contact and dissolved air flotation treatment of storm water
12 Oct 20
A wastewater treatment system includes a first sub-system having a biological treatment unit and a second sub-system having a dissolved air flotation unit.
Nathan Antonneau
Filed: 13 Jun 17
GRANT
Utility
In-situ delivery systems for reaction product abatement in electrochemical cells
12 Oct 20
An electrochlorination system comprising an electrochemical cell including a housing having an inlet, an outlet, and an anode-cathode pair disposed within the housing, a source of a chloride-containing aqueous solution having an outlet fluidly connectable to the inlet of the electrochemical cell, and a source of an oxidizing agent fluidly connectable to the source of chloride-containing aqueous solution upstream of the electrochemical cell.
Joseph D. Gifford, Joshua Griffis, Simon P. Dukes, Li-Shiang Liang, Michael J. Shaw, Frederick C. Wilkins
Filed: 15 Sep 16
APP
Utility
Reduced Volume Electrochlorination Cells and Methods of Manufacturing Same
7 Oct 20
An electrochemical cell includes a housing having an inlet, an outlet, and a central axis and an anode-cathode pair disposed concentrically within the housing about the central axis and defining an active area between an anode and a cathode of the anode-cathode pair.
Paul Beddoes, Li-Shiang Liang, Andrew Green, Jacob Telepciak, Joshua W. Griffis, Simon P. Dukes
Filed: 22 Dec 19
APP
Utility
Simultaneous Nitrification/Denitrification (SNDN) in Sequencing Batch Reactor Applications
9 Sep 20
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 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.
Brandon Martin Olson
Filed: 13 Sep 18
APP
Utility
Treatment of Liquid Streams containing High concentration of Solids utilizing Ballasted Floc Technology
12 Aug 20
A high-solids wastewater treatment system is disclosed.
Paul Hoeferlin, Michael R. Riffe, Frank L. Sassaman
Filed: 16 Aug 18
GRANT
Utility
Use of porous glass media for a biofilter to remove odorous compounds from an air stream
3 Aug 20
A system for removing undesirable compounds from contaminated air includes a biofilter having porous glass media.
Timothy Frank Matheis
Filed: 18 Oct 18
GRANT
Utility
Concentration of wastewater to reduce flow rate, cost, and footprint of treatment system
27 Jul 20
A system to remove contaminants from contaminated water contains a pre-concentrating subsystem, a contaminant removal subsystem or a biological subsystem configured to remove two or more contaminants, and a permeate blending subsystem.
Michael R. Riffe, Frank L. Sassaman, Michael W. Wismer
Filed: 7 Nov 18
APP
Utility
Sand Filter LED Status Light
22 Jul 20
A system for treating water for use in aquatics or recreational facilities is disclosed.
Steven Nicolich
Filed: 16 Sep 18
APP
Utility
Electrochemical System with Concentration Recirculation In Cyclic Batch Mode
8 Jul 20
A method of operating an electrochemical device includes periodically discharging a volume of concentrate reject in a timed batch cycle and replacing the concentrate reject with feed water.
Li-Shiang Liang
Filed: 3 May 17
APP
Utility
System and Method of Deionization of Water
8 Jul 20
A method of treating water in a water treatment system after a replacement of an ion exchange bed includes introducing water to be treated into the ion exchange bed of the water treatment system to produce treated water, calculating a current exchange daily average flow rate of water through the water treatment system, calculating a cumulative daily average flow rate of water through the water treatment system, and determining an estimated number of days remaining to exhaustion of the ion exchange bed based on the current exchange daily average flow rate and the cumulative daily average flow rate.
Erich G. Hoefferle, Isabel Rozario, Stephen Mildner
Filed: 16 Mar 20
GRANT
Design
One piece side rail cover shifter rail for filter press
29 Jun 20
Jeffrey Scott Chrispell, Robert Ruurd Bosgraaf
Filed: 11 Sep 16
GRANT
Utility
Addition of alkaline materials to biotrickling filter or bio-filter make-up water
29 Jun 20
A system for removing undesirable compounds from contaminated air includes a biofilter having an alkaline material introduction system and a fuzzy-logic based controller.
James Vaughan Harshman
Filed: 3 Nov 15
APP
Utility
Water Treatment of Sodic, High Salinity, or High Sodium Waters for Agricultural Application
24 Jun 20
A method of providing water suitable for irrigation use includes feeding pre-treated water to an electrodialysis apparatus, treating the pre-treated water in the electrodialysis apparatus by selectively removing either one or both of monovalent anionic and monovalent cationic species from the pre-treated water while retaining either one or both of multivalent anionic and multivalent cationic species to produce a treated water stream having a lower ratio of monovalent ions to multivalent ions than the pre-treated water, and directing the treated water into an irrigation water distribution system.
Gary C. GANZI, Fredreick C. WILKINS, Li-Shiang LIANG, Paul T. RICE
Filed: 7 May 18
APP
Utility
Wastewater Treatment System and Method
17 Jun 20
Systems and methods for treating wastewater including a contact tank configured to mix influent wastewater with activated sludge to form a mixed liquor, a dissolved air flotation unit having an inlet and an outlet, the inlet of the dissolved air flotation unit in fluid communication with an outlet of the contact tank, and a membrane bioreactor including a biological treatment vessel having an inlet in fluid communication with the outlet of the dissolved air flotation unit and an activated sludge outlet in fluid communication with an inlet of the contact tank.
Orest Zacerkowny, Argun O. Erdogan
Filed: 5 Apr 18
GRANT
Utility
Digester cover left-in-place ballast ring
15 Jun 20
A sludge digester including a vessel and floating cover.
Matthew P. Bronk, Douglas N. Muller, Thomas Mangione
Filed: 14 May 18
GRANT
Utility
Side stream treatment for overflow
1 Jun 20
A system and method of treating wastewater.
Sergio Andres Pino-Jelcic
Filed: 23 Jun 15
GRANT
Utility
Fine mesh fish larvae protection system for traveling water screens
1 Jun 20
A traveling water screen comprises a basket having a frame including an upper portion, a lower portion, and side portions, a coarse screen secured to the frame, a fine screen overlay attachable to the coarse screen, and a bucket portion secured to a lower portion of the frame, comprising an inner wall surface, and at least one deflector secured to the inner wall surface.
Bruce Herman, Stephen Thomas, Sean McGaughran
Filed: 28 Jul 16
GRANT
Utility
Low energy system and method of desalinating seawater
25 May 20
A low energy water treatment system and method is provided.
Gary C. Ganzi, Li-Shiang Liang, Frederick C. Wilkins
Filed: 5 Sep 16
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