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公开(公告)号：US20210331091A1
公开(公告)日：2021-10-28
申请号：US17267444
申请日：2019-07-19
Applicant: Tyson Garret BEAMAN , Garret BEAMAN , Ryan CLARK , John VORWALLER , Robert E. HANFORD , Ovivo Inc.
Inventor： Tyson Beaman , Garret Beaman , Ryan Clark , John Vorwaller , Robert E. Hanford
Abstract: In a wastewater treatment system, a clarifier has a submerged effluent launder, with a sloped, submerged plate that allows clarified liquid to exit through submerged openings. The sloped surface tends to accumulate solids, which can lead to algae growth. Typical internal scum collection system equipment prevents any efficient way to clear the accumulated sludge off the launder surface because of interferences. As disclosed here, a scum discharge area or box is placed external to the clarifier in one embodiment. Scum is wiped from a vertical surface of the launder assembly, above the sloped launder surface, and swept over a scum beach at one position in the clarifier, to drop into a lower trough and the flow out through the clarifier wall to a drop out box or scum discharge area. This allows for a rake-attached, sweeping launder wiper to be moved with the clarifier's rake to remove the accumulation of sludge from the launder's submerged surface, without elaborate moving parts. The sludge is swept back to settle in the clarifier, improving effluent quality by preventing sludge from exiting along with clarified water. In another embodiment the scum discharge box is internal, as a low-profile vertically disposed channel against the inside clarifier wall, leading to an existing scum pipe through the clarifier wall.
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32.发明授权公开(公告)号：US10781125B2
公开(公告)日：2020-09-22
申请号：US16537379
申请日：2019-08-09
Applicant: Ovivo Inc.
Inventor： H. David Stensel , Hiren Trivedi , John Vorwaller , Tyson Beaman
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. It includes anaerobic, anoxic, and aerobic process zones, a high soluble biodegradable COD loaded first reactor in anaerobic or anoxic zones, a granular sludge classifier with recycle of underflow granular sludge to the first reactor, a secondary clarifier to settle flocculent sludge and particulates and recycle of flocculent sludge from the secondary clarifier underflow to an aerobic process zone. Wasting of sludge from the two separate recycle lines controls the bioprocess flocculent and granular sludge concentrations and SRTs. Bypass around and recycle flow to the classifier to maintain desired flow under various influent flow conditions aid control of granule size. On/off mixer operation of anaerobic and anoxic reactors may be used.
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公开(公告)号：US20200238218A1
公开(公告)日：2020-07-30
申请号：US16637035
申请日：2018-08-10
Applicant: OVIVO INC.
Inventor： Clay Brandon RICH , Rick WHISENANT , Clyde Wayne HOLLIMAN , Dennis LIVINGSTON
Abstract: A submerged membrane unit has air diffusers located outside of the membrane area in plan view. The diffusers may be mounted in or below a diffuser case. The diffuser case may have walls to direct bubbles towards the membranes. The diffusers may be drop diffusers, for example as in a single drop diffuser assembly. The membrane unit may have polymeric or ceramic membranes, for example ceramic flat plate membranes. In an example, a rectangular shrouded membrane unit has a diffuser case below it that is rectangular in plan view but trapezoidal in side view, with drop diffusers located in the corners of the diffuser case. In a process of treating high strength wastewater, for example thickening or digesting waste sludge, a membrane unit optionally with ceramic plate membranes is immersed in the wastewater. The membranes are sparged with bubbles produced below but beside the membrane unit in a diffuser case.
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公开(公告)号：US10688419B2
公开(公告)日：2020-06-23
申请号：US15425631
申请日：2017-02-06
Applicant: OVIVO INC.
Inventor： Andrew L. Browning
Abstract: A debris filter has a housing, a filter screen mounted to the housing and disposed so as to extend across a flow path through the housing, a debris extractor mounted to the housing, and a splitter bar also mounted to the housing. The debris extractor and the filter screen are so mounted to the housing as to enable rotation of the filter screen and the debris extractor relative to one another. The debris extractor has a debris intake opening and the debris extractor and the splitter bar are so mounted to the housing that the intake opening is positionable adjacent to or in juxtaposition with the splitter bar with the splitter bar overlapping and shielding the intake opening.
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公开(公告)号：US10143944B2
公开(公告)日：2018-12-04
申请号：US15146770
申请日：2016-05-04
Applicant: Ovivo Inc.
Inventor： Gary D. Haggard, Sr. , Brendan Kelly
Abstract: Underdrain units in a sand medium or dual medium filtration system include efficient air, water and combined air/water cleaning. Air, water or both are delivered in backflow direction from a very low position on the underdrain unit, as well as water from a higher position, so as to effectively remove blocking contaminants on the outside the underdrain unit and in the surrounding filter media.
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Patent Agency Ranking
公开(公告)号：US09861912B2
公开(公告)日：2018-01-09
申请号：US15158176
申请日：2016-05-18
Applicant: Ovivo Inc.
Inventor： Gary D. Haggard , Jeffrey C. Kauppila
CPC classification number: B01D21/245 , B01D21/06 , B01D21/18 , B01D21/183
Abstract: Rapid removal of settled solids in secondary clarifiers is critical in sewage treatment plants having nutrient removal permits, especially phosphorus, to prevent solids from surfacing after going aerobic and releasing phosphorus. Release of phosphorus could impact the plant's permit limit. This is addressed by the described design of rake blade flights and squeegees that quickly move solids on the clarifier floor to the sludge pickup tubes, usually in one revolution. In a preferred form the blade flights are curved and may be spiral in shape, causing gathered sludge to advance outwardly toward the pickup tube at each flight, usually in one revolution. Previous blade flights included angled linear sections that progressively move the sludge in incremental movements with each revolution of the clarifier mechanism.
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公开(公告)号：US20170253512A1
公开(公告)日：2017-09-07
申请号：US15448499
申请日：2017-03-02
Applicant: Ovivo Inc.
Inventor： James Goldhardt , Haydon Christiansen
CPC classification number: C02F3/28 , B01F11/0082 , B01F2215/0052 , B01F2215/0431 , B01F2215/0454 , B01F2215/0481 , C02F11/04
Abstract: A reciprocating motion disk for mixing wastewater in a tank of a treatment plan is optimized for geometry, along with cycling speed and stroke length, to cause effective mixing velocity throughout the tank.
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公开(公告)号：US09695077B2
公开(公告)日：2017-07-04
申请号：US14859164
申请日：2015-09-18
Applicant: Ovivo Inc.
Inventor： Tor Heimdal , John Vorwaller
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.
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公开(公告)号：US20170144087A1
公开(公告)日：2017-05-25
申请号：US15425631
申请日：2017-02-06
Applicant: OVIVO INC
Inventor： Andrew L. Browning
CPC classification number: B01D29/688 , B01D29/035 , B01D29/682 , B01D2201/082
Abstract: A debris filter has a housing, a filter screen mounted to the housing and disposed so as to extend across a flow path through the housing, a debris extractor mounted to the housing, and a splitter bar also mounted to the housing. The debris extractor and the filter screen are so mounted to the housing as to enable rotation of the filter screen and the debris extractor relative to one another. The debris extractor has a debris intake opening and the debris extractor and the splitter bar are so mounted to the housing that the intake opening is positionable adjacent to or in juxtaposition with the splitter bar with the splitter bar overlapping and shielding the intake opening.
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公开(公告)号：US20160090317A1
公开(公告)日：2016-03-31
申请号：US14866735
申请日：2015-09-25
Applicant: Ovivo Inc. , The University of Akron
Inventor： Lu-Kwang Ju , Hiren K. Trivedi
Abstract: Phagotrophic algae are used in connection with aerobic or anaerobic digestion of solids, especially waste activated sludge (WAS), to more efficiently digest solids and to meet, over a shorter period of time, volatile solids standards and specific oxygen uptake rate requirements as well as pathogen reduction requirements.
Abstract translation: 吞噬藻类用于固体，特别是废活性污泥（WAS）的需氧或厌氧消化，以更有效地消化固体，并在更短的时间内满足挥发性固体标准品和比吸氧速率要求以及 病原体减少要求。
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