公开(公告)号：US20180257961A1

公开(公告)日：2018-09-13

申请号：US15760400

申请日：2016-09-16

Applicant: Evoqua Water Technologies, LLC

Inventor： Joseph D. Gifford ,  Joshua Griffis ,  Simon P. Dukes ,  Li-Shiang Liang ,  Michael J. Shaw ,  Frederick C. Wilkins

IPC: C02F1/467 ,  C25B3/04 ,  C02F1/461 ,  C25B1/26 ,  C25B15/08 ,  C25B15/02

Abstract: 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.

公开(公告)号：US20180147509A1

公开(公告)日：2018-05-31

申请号：US15316379

申请日：2015-06-05

Applicant: Evoqua Water Technologies, LLC

Inventor： Marco Braschi ,  Roberto Negrini

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

CPC classification number: B01D33/23 ,  B01D29/012 ,  B01D29/07 ,  B01D29/413 ,  B01D33/067 ,  B01D33/11 ,  B01D33/21 ,  B01D33/50 ,  B01D2201/127 ,  B07B1/4618

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：US09975065B2

公开(公告)日：2018-05-22

申请号：US14763191

申请日：2013-03-14

Applicant: Evoqua Water Technologies LLC

Inventor： Matthew J. Vareika ,  Steven E. Woodard ,  Joseph P. Gwarjanski

IPC: B01D21/24 ,  F16K21/18 ,  C02F1/48 ,  C02F3/12 ,  B01D21/00 ,  B01D21/30 ,  C02F1/00

CPC classification number: B01D21/2433 ,  B01D21/0018 ,  B01D21/2427 ,  B01D21/307 ,  C02F1/488 ,  C02F3/1263 ,  C02F2001/007 ,  C02F2305/12 ,  Y02W10/15

Abstract: The present disclosure is directed to systems and methods for removing waste materials from the surface of liquid in a liquid treatment system. In one example a surface wasting system comprises a chamber including a sump, an outer conduit coupled by a first seal to an upper wall of the chamber, an inner conduit axially disposed within the outer conduit, the inner conduit in contact with a surface of a liquid in a treatment vessel of the liquid treatment system, an expandable waterproof bellows having a lower end coupled to the outer conduit above the first seal and an upper end coupled to the inner conduit, the waterproof bellows forming a second seal between the outer conduit and the inner conduit, and a float coupled to the inner conduit and configured to vertically displace the inner conduit responsive to a change in a level of liquid in the sump.

公开(公告)号：US20180119295A1

公开(公告)日：2018-05-03

申请号：US15561275

申请日：2016-02-17

Applicant: EVOQUA WATER TECHNOLOGIES LLC

Inventor： Joshua W. Griffis ,  Li-Shiang Liang ,  Paul Beddoes ,  Andrew Green ,  Simon P. Dukes ,  Jacob Telepciak

IPC: C25B1/26 ,  C25B9/08 ,  C25B11/03 ,  C25B11/04

Abstract: An electrochemical cell includes a cathode and an anode disposed in a housing. Each of the cathode and anode portions extending radially outward from a region proximate a central axis of the housing. A surface area of an active surface of the anode is greater than a surface area of an internal surface of the housing. A surface area of an active surface of the cathode is greater than a surface area of an internal surface of the housing.

公开(公告)号：US09944546B2

公开(公告)日：2018-04-17

申请号：US14603098

申请日：2015-01-22

Applicant: EVOQUA WATER TECHNOLOGIES LLC

Inventor： Juchui Ray Lin

IPC: C02F1/46 ,  C08F212/14 ,  C08F226/06 ,  C08F12/18 ,  C02F1/469 ,  B01D67/00 ,  H03K5/01 ,  B01D61/44 ,  C08J5/22 ,  H03K5/00

CPC classification number: C02F1/4693 ,  B01D61/44 ,  B01D67/0002 ,  B01D69/10 ,  B01D71/28 ,  B01D2323/40 ,  B01D2325/16 ,  B01D2325/42 ,  C02F1/4695 ,  C02F2103/08 ,  C02F2201/46 ,  C08F12/18 ,  C08F212/14 ,  C08F226/06 ,  C08J5/2206 ,  C08J2327/06 ,  C08J2379/06 ,  H01M8/1018 ,  H01M8/227 ,  H01M2008/1095 ,  H01M2300/0082 ,  H01Q3/30 ,  H01Q3/34 ,  H01Q3/36 ,  H01Q3/38 ,  H03K5/01 ,  H03K2005/00286 ,  C08F212/36

Abstract: Embodiments of the present invention provide for anion exchange membranes and processes for their manufacture. The anion exchange membranes described herein are made the polymerization product of at least one functional monomer comprising a tertiary amine which is reacted with a quaternizing agent in the polymerization process.

公开(公告)号：US20180021722A1

公开(公告)日：2018-01-25

申请号：US15550175

申请日：2016-02-12

Applicant: Evoqua Water Technologies LLC

Inventor： Michael Sumner Murphy ,  James Paul Harshman ,  Eric Carl Hansen

IPC: B01D53/34 ,  C02F3/00 ,  C02F3/04 ,  B01D53/84

CPC classification number: B01D53/346 ,  B01D53/84 ,  B01D2252/103 ,  B01D2257/304 ,  C02F3/006 ,  C02F3/043 ,  C02F3/107 ,  C02F2101/101 ,  C02F2209/001 ,  C02F2209/003 ,  C02F2209/06 ,  C02F2209/15 ,  C02F2209/265 ,  C02F2209/40 ,  C02F2209/44 ,  C02F2303/02 ,  Y02A50/2358 ,  Y02W10/15

Abstract: A biofilter irrigation system comprises a cylindrical vessel having a central axis, a media bed positioned within the vessel, a spray head system positioned above the media bed, the spray head system comprising a central hub positioned at the central axis of the vessel, at least one arm extending distally from the central hub toward a wall of the vessel and configured to rotate about the central axis, and a plurality of nozzles connected to the at least one arm. The biofilter irrigation system further comprises a fluid outlet positioned below the media bed.

公开(公告)号：US09782725B2

公开(公告)日：2017-10-10

申请号：US15116964

申请日：2015-04-02

Applicant: EVOQUA WATER TECHNOLOGIES LLC

Inventor： Li-Shiang Liang ,  Joseph D. Gifford ,  Vivian Leow Hwee Teng ,  Keng Hoo Yeo ,  Chin Hiang Tan

IPC: B01D17/06 ,  B01D61/46 ,  B01D63/08 ,  C02F1/46 ,  B01D61/48 ,  B01D61/42 ,  B01D61/50 ,  C02F1/469 ,  C02F1/461

CPC classification number: B01D61/48 ,  B01D17/06 ,  B01D61/42 ,  B01D61/50 ,  B01D2313/04 ,  B01D2313/083 ,  B01D2313/14 ,  B01D2313/20 ,  B01D2313/54 ,  B01D2315/10 ,  C02F1/46104 ,  C02F1/4693 ,  C02F1/4695 ,  C02F2201/4611 ,  C02F2201/46115

Abstract: Electrochemical purification apparatuses for treating water and methods of assembling the devices are provided. The apparatuses may be cross-flow electrochemical devices. The devices may be assembled and sealed through masking and application of a potting material. The devices may comprise various structures configured to improve the current efficiency of the device, reduce leakage, and improve the distribution of potting material to the assembly.

公开(公告)号：US09751029B2

公开(公告)日：2017-09-05

申请号：US14419282

申请日：2013-03-15

Applicant: Evoqua Water Technologies LLC

Inventor： William H. Selle

IPC: B01D21/20 ,  B01D21/04 ,  B29C70/06 ,  F16C3/02

CPC classification number: B01D21/20 ,  B01D21/04 ,  B29C70/06 ,  F16C3/02 ,  Y10T29/49826

Abstract: Disclosed are apparatus and methods for treating wastewater. In one example there is provided a wastewater treatment system. The wastewater treatment system comprises a settling basin having a first sidewall and a second sidewall, a first headshaft mount disposed on the first sidewall, a second headshaft mount disposed on the second sidewall, a headshaft comprising a shaft extending between and engaging the first headshaft mount and the second headshaft mount and including a bull sprocket and a collector headshaft sprocket.

公开(公告)号：US09725346B2

公开(公告)日：2017-08-08

申请号：US14898340

申请日：2014-06-17

Applicant: Evoqua Water Technologies LLC

Inventor： Michael Casey Whittier ,  Timothy Lindemann ,  Nathan Antonneau

IPC: C02F3/30

CPC classification number: C02F3/307 ,  C02F2203/004

Abstract: A system and method of treating wastewater having at least one undesirable biological species is provided. In accordance with embodiments, a wastewater treatment system is provided comprising a main biological treatment train including at least one first unit operation configured to perform an anaerobic ammonium oxidation process, and at least one subsystem configured to increase a concentration of anammox bacteria in the at least one first unit operation, the treatment system arranged to reduce the concentration of total nitrogen in the wastewater.

公开(公告)号：US20170129792A1

公开(公告)日：2017-05-11

申请号：US15355927

申请日：2016-11-18

Applicant: The Texas A&M University System ,  Evoqua Water Technologies LLC

Inventor： Yongheng Huang ,  Michael Wismer ,  Lew Andrew Reyes ,  Xiangyi Qiao ,  Simon Dukes ,  Frank Sassaman ,  David Berger

IPC: C02F1/70 ,  C02F1/52 ,  C02F1/72 ,  C02F1/00 ,  C02F1/28

CPC classification number: C02F1/705 ,  B01J20/0225 ,  B01J20/0229 ,  B01J21/02 ,  B01J23/745 ,  B01J37/0201 ,  C02F1/001 ,  C02F1/281 ,  C02F1/5245 ,  C02F1/66 ,  C02F1/74 ,  C02F2101/103 ,  C02F2101/106 ,  C02F2101/20 ,  C02F2103/06 ,  C02F2103/18 ,  C02F2103/365 ,  C02F2209/005 ,  C02F2209/40

Abstract: A system containing a reactor vessel including zero valent iron media, a source of a conditioning additive, a source of a reaction additive, and a process control subsystem is disclosed. A method for reducing a concentration of one or more contaminants in contaminated water including contacting zero valent iron media with a conditioning additive, contacting contaminated water with conditioned zero valent iron media, and introducing a reaction additive is also disclosed. The conditioning additive and reaction additive may each contain an aluminum salt.