公开(公告)号：US20200284018A1

公开(公告)日：2020-09-10

申请号：US16765817

申请日：2018-11-21

Applicant: Ovivo Inc.

Inventor： Hiren Trivedi ,  Michael Snodgrass

IPC: E03F3/02 ,  C02F1/00 ,  C02F1/44

Abstract: Combined Sewer Overflow (CSO) events require certain minimum treatment, before discharge, according to EPA regulations. However, these events are infrequent, and CSO treatment systems remain idle most of the time. Tertiary filtration is typically used to polish off the secondary treated water in order to remove suspended matter, phosphorous, etc. Tertiary systems are usually designed to handle design flows and remain active most of the time. These are two independent unit operations requiring major capital investment and operational expense. According to this invention an interchangeable system is able to switch a tertiary treatment reactor back and forth between two applications ensuring seamless operation, smooth transition and significant cost savings for treatment facilities.

公开(公告)号：US10287186B2

公开(公告)日：2019-05-14

申请号：US15566652

申请日：2016-04-13

Applicant: Ovivo Inc.

Inventor： Gensbittel Dominique

IPC: C02F1/42 ,  B01J47/04 ,  B01J49/07 ,  B01J49/09 ,  B01J49/50

Abstract: In an ion-exchange separation system, a single regeneration column provides for separation of anion and cation resins and the regeneration of both cation and anion resins with a very low level of cross-contamination. After regeneration most of the anion layer in the column is withdrawn, and most of the cation layer is withdrawn, but a portion of each layer adjacent to the interface between the layers remains in the column, to isolate these cross-contaminated portions from the regenerated resins. The withdrawn, regenerated anion and cation resins are placed back into the working vessel.

公开(公告)号：US09896361B2

公开(公告)日：2018-02-20

申请号：US14863678

申请日：2015-09-24

Applicant: Ovivo Inc.

Inventor： Thomas Leland ,  Joy Emory ,  Steve Myers

IPC: C02F3/00 ,  C02F3/12 ,  C02F3/20 ,  C02F3/30

CPC classification number: C02F3/006 ,  C02F3/1257 ,  C02F3/1284 ,  C02F3/20 ,  C02F3/206 ,  C02F3/301 ,  C02F2209/04 ,  C02F2209/14 ,  C02F2209/15 ,  C02F2209/18 ,  C02F2209/40 ,  Y02W10/15

Abstract: An orbital wastewater treatment system includes a tank assembly, at least one impeller, at least one flow-diversion mechanism, at least one actuator, optionally at least one sensor disposed in the tank assembly, and a control unit. The tank assembly has three treatment zones and pairs of passages between the first zone and the second zone and between the second zone and the third zone. The impeller disposed in the tank assembly moves mixed liquor under process about the tank assembly. Multiple flow-diversion mechanisms disposed at the passages between the zones of each pair control process conditions pursuant to a predetermined schedule and/or at least partially in accordance with input from the one or more sensors.

公开(公告)号：US20170253516A1

公开(公告)日：2017-09-07

申请号：US15448088

申请日：2017-03-02

Applicant: Ovivo Inc.

Inventor： Tor Heimdal ,  Ryan Clark ,  Scott Hawkins ,  John Vorwaller

IPC: C02F11/12 ,  B01F5/10 ,  B01F7/22

CPC classification number: C02F11/12 ,  B01F3/1221 ,  B01F5/104 ,  B01F5/108 ,  B01F7/007 ,  B01F7/165 ,  B01F7/22 ,  B01F2003/1285 ,  B01F2215/0052 ,  C02F11/121 ,  C02F2301/046

Abstract: In a sludge thickener water/wastewater treatment system, sludge solids are recirculated with a mixer positioned in the influent column or offset from the center column and within the stilling well, in order to produce essentially constant sludge solids concentration in the sludge withdrawn from the thickener. This solves the problem of thickeners producing inconsistent underflow solids concentration and often exhibiting problems with binding of rake arms due to sometimes very high sludge concentrations. Also, dewatering steps that follow thickening typically require a relatively constant solids concentration for efficient operation.

公开(公告)号：US20170081230A1

公开(公告)日：2017-03-23

申请号：US14859164

申请日：2015-09-18

Applicant: Ovivo Inc.

Inventor： Tor Heimdal ,  John Vorwaller

IPC: C02F11/12 ,  B01D21/06 ,  B01D21/24 ,  B01D21/00

CPC classification number: C02F11/12 ,  B01D21/0003 ,  B01D21/0006 ,  B01D21/06 ,  B01D21/2427 ,  B01D21/245 ,  B01D21/34 ,  C02F2201/004

Abstract: In a wastewater treatment system, a suction duct clarifier is converted to a suction pipe clarifier without penetrating existing concrete at the base of the tank. An elevated sludge collection box is added, positioned on the center column to rotate with rake arms, and a series of sludge riser pipes extend from the rake arms up into the sludge collection box for sludge delivery by hydraulic pressure differential. A sludge discharge downpipe is provided within the center/influent column for delivery of sludge from the collection box, and at the bottom of this pipe, above the tank floor, the discharge pipe exits through an opening in the center/influent column. At the outside of this opening is a sludge transfer box that receives sludge exiting the discharge pipe and conveys it down through the existing floor opening and to the existing under-floor RAS return pipe.

公开(公告)号：US20250128976A1

公开(公告)日：2025-04-24

申请号：US18433131

申请日：2024-02-05

Applicant: Ovivo Inc.

Inventor： Nathaniel Stein ,  Sergio Pino-Jelcic

IPC: C02F11/04 ,  C02F101/10 ,  C02F101/16 ,  C02F101/30

Abstract: A system and method are disclosed for control of feast and famine conditions in continuous-flow biological nutrient removal processes to drive intensification of the activated sludge wastewater treatment process. For control of feast conditions, an upfront anaerobic zone is equipped with a biosensor to monitor real-time soluble biodegradable carbon uptake rate. Readings from the biosensor are received in a controller, which makes adjustments to operation of the anaerobic zone when readings deviate beyond said threshold limits. In one aspect return activated sludge to the anaerobic zone is modulated via an automated flow control device. Famine conditions in downstream process zones are also monitored and controlled.

公开(公告)号：US12077456B2

公开(公告)日：2024-09-03

申请号：US17051356

申请日：2019-03-28

Applicant: Ovivo Inc.

Inventor： Philippe Rychen ,  Dominik Saladin ,  Sylvain Keav

IPC: C02F1/32 ,  C02F1/42 ,  C02F1/70 ,  C02F103/04

CPC classification number: C02F1/325 ,  C02F1/42 ,  C02F1/705 ,  C02F2103/04 ,  C02F2201/002 ,  C02F2201/3223 ,  C02F2201/3228 ,  C02F2301/024

Abstract: The invention relates to an apparatus for providing ultrapure water, in particular ultrapure water for use in semiconductor fabrication.
This apparatus comprises at least one cylindrical reactor with an inner cylindrical shell, an outer cylindrical shell and a channel-like volume between inner shell and outer shell.
According to the invention



said inner cylindrical shell houses at least one UV emission device,
said outer cylindrical shell comprises at least one means for reflecting UV radiation, and
said channel-like volume is provided for flowing water through the reactor.

公开(公告)号：US11919787B2

公开(公告)日：2024-03-05

申请号：US17445555

申请日：2021-08-20

Applicant: Ovivo Inc.

Inventor： Hiren Trivedi ,  John Vorwaller ,  Tyson Beaman ,  Sophia Baker ,  Sergio Pino-Jelcic ,  David Stensel

IPC: C02F1/52 ,  C02F1/00 ,  C02F3/02

CPC classification number: C02F1/52 ,  C02F3/02 ,  C02F2001/007 ,  C02F2301/046

Abstract: A continuous flow granular/flocculent sludge wastewater process selects for granule biomass capable of nitrogen and phosphorus removal and controls granule size and concentration of granular and flocculent sludge for optimal nutrient, organic, and solids removal in a smaller footprint. A series of biological process zones lead to a secondary clarifier. Mixed liquor sludge, preferably from an aerobic zone, goes through a classifier or separator processing flow from the aerobic zone, to the secondary clarifier. In a sidestream process that can be included a portion of sludge preferably from an aerobic zone goes through a classifier or separator to selectively produce a granular-rich effluent, and the clarifier may also have a separator to further concentrate granular biomass, most of which is cycled back to an initial multi-stage anaerobic process zone. The anaerobic zone is structured and operated to encourage growth of granules in subsequent process zones.

公开(公告)号：US11707704B2

公开(公告)日：2023-07-25

申请号：US17175451

申请日：2021-02-12

Applicant: Ovivo Inc.

Inventor： Dustin Voorhees

IPC: B01D29/48 ,  B01D29/56 ,  B01D29/60 ,  B01D37/04 ,  B01D39/16 ,  C02F1/00 ,  C02F101/30

CPC classification number: B01D29/48 ,  B01D29/56 ,  B01D29/605 ,  B01D37/045 ,  B01D39/16 ,  C02F1/001 ,  C02F1/008 ,  C02F2101/30 ,  C02F2201/006 ,  C02F2209/42 ,  C02F2303/14

Abstract: In a wastewater treatment plant a rag seeding tank is included in a process drain to collect hair and fibers which have passed through headworks of the plant. The hair and fibers tend to join together into large masses downstream of the headworks and can be damaging to process zones, particularly membrane zones. The rag seeding tank includes cartridges filled with surfaces that fibers and hair will attach to, so that hair/fiber rags grow in the seeding tank and are removed therefrom rather than causing problems downstream.

公开(公告)号：US20220356007A1

公开(公告)日：2022-11-10

申请号：US17733597

申请日：2022-04-29

Applicant: Ovivo Inc.

Inventor： Artak Daviti Mirzoyan ,  Haydon Christiansen ,  Eric Hunter

IPC: B65D90/54 ,  B65D90/08 ,  E04H7/06

Abstract: A sealing system for a covered tank, particularly a fixed gas-sealing tank in a wastewater treatment system, includes a thrust ring positioned just inside the tank rim, secured to a series of radial beams for the cover. Preferably supported on corbels anchored to the interior tank wall, the thrust ring has an outwardly extending generally horizontal flange that overlies the edge of the tank rim. To this flange and to the top of the tank rim is secured a flexible membrane seal, around the periphery of the tank. The membrane seal is easily installed, reliable as a seal, and can be efficiently replaced when needed.