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公开(公告)号：US09862628B2
公开(公告)日：2018-01-09
申请号：US15027231
申请日：2014-10-03
CPC分类号： C02F3/201 , B01D61/18 , B01D63/082 , B01D65/02 , B01D65/08 , B01D2313/26 , B01D2315/06 , B01D2321/185 , B01F3/0412 , B01F3/04269 , B01F13/0255 , B01F13/0277 , B01F13/0283 , B01F2003/04148 , B01F2003/04234 , B01F2003/04312 , B01F2215/0422 , C02F3/1273 , C02F3/1284 , C02F2303/16 , C02F2303/20 , Y02W10/15
摘要： In a submerged membrane bioreactor (MBR or SMU), diffusers are used to eject air bubbles, primarily to facilitate the movement of mixed liquor past the membrane surfaces, cleaning and scouring the surfaces of the membranes with the mechanical energy of the combined air/liquid/solids movement. Oxygen transfer from the bubbles into the mixed liquor is often a secondary goal, for supplying oxygen to biological processes. The invention involves the use of a specific bubble diffuser, oriented at a selected upward angle, to enable a single style diffuser to accomplish simultaneous generation of mid-size and fine bubble aeration, with adjustment of the tilt angle varying the percentages of mid-size and fine bubble aeration. The angle selection, along with the number of diffusers and air volume selected, allows achievement of target liquid movement through the MBR.
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公开(公告)号：US09776892B2
公开(公告)日：2017-10-03
申请号：US14083945
申请日：2013-11-19
发明人： Dominique Gensbittel
IPC分类号： C02F1/42 , B01J49/85 , B01D15/36 , B01J41/05 , B01J47/022 , B01J49/07 , C02F101/10 , C02F103/04
CPC分类号： C02F1/42 , B01D15/363 , B01J41/05 , B01J47/022 , B01J49/07 , B01J49/85 , C02F2001/422 , C02F2101/10 , C02F2101/108 , C02F2103/04 , C02F2301/08 , C02F2303/16
摘要： A process is described for treating water, in particular for obtaining ultrapure water, in which a decationized water stream is passed at least through a first strong base anion exchange bed and a second strong base anion exchange bed, which is arranged downstream, in particular directly downstream, of the first strong base anion exchange bed. Furthermore, a water treatment system and a counter-current ion exchange unit for carrying out such a process are described.
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公开(公告)号：US20240279084A1
公开(公告)日：2024-08-22
申请号：US18584863
申请日：2024-02-22
申请人： Ovivo Inc.
IPC分类号： C02F1/52 , C02F1/44 , C02F101/36
CPC分类号： C02F1/52 , C02F1/44 , C02F2101/36 , C02F2305/04
摘要： PFAS (Per- and polyfluoroalkyl substances) contained in water are remediated by a process in which colloidal as aphrons (CGAs) are generated under shear and with surfactants, either added to the liquid or inherent in the PFAS. Preferably a pump is used to generate the CGAs, to move CGAs and liquid through the system, and to induce gas or air into the pump. The resulting foam that rises to the surface is comprised of various small bubbles, producing a very large surface area effective in attracting PFAS by surface adsorption, and when the foam is removed a small volume of liquid highly concentrated in PFAS can be efficiently destroyed by various known destruction techniques. The method is effective to remove PFOS.
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公开(公告)号：US20240091677A1
公开(公告)日：2024-03-21
申请号：US17947613
申请日：2022-09-19
申请人： OVIVO INC.
发明人： Trevor Robert AUMAN
CPC分类号： B01D24/001 , B01D39/2086 , B01D2101/02 , B01D2239/10
摘要： A method for manufacturing wastewater filtration plates uses a flowable composition including pre-ceramic raw material. The flowable composition is extruded to form a thin plate preform. Carbon-containing material is included in the flowable composition and/or added to the surface of the thin plate perform during or after extrusion thereof. The carbon-containing material is preformed carbon filaments or carbon-fiber precursor material. The thin plate preform is subjected to elevated temperatures to convert the pre-ceramic raw material into porous ceramic with carbon filaments embedded therein or disposed on the surface of the finished ceramic plate.
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公开(公告)号：US20220219122A1
公开(公告)日：2022-07-14
申请号：US17571016
申请日：2022-01-07
申请人： Ovivo Inc.
发明人： Michael Snodgrass
摘要： Spacers are attached to membranes of an array of flat plate ceramic membranes. The spacers limit bending of the membranes which can be caused by buildup of solids on the faces of adjacent membranes.
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26.发明申请公开(公告)号：US20210380441A1
公开(公告)日：2021-12-09
申请号：US17445548
申请日：2021-08-20
申请人： Ovivo Inc.
发明人： Hiren Trivedi , John Vorwaller , Tyson Beaman , Sophia Baker , Sergio Pino-Jelcic , David Stensel
摘要： 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.
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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
申请人： Tyson Garret BEAMAN , Garret BEAMAN , Ryan CLARK , John VORWALLER , Robert E. HANFORD , Ovivo Inc.
发明人： Tyson Beaman , Garret Beaman , Ryan Clark , John Vorwaller , Robert E. Hanford
摘要： 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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28.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
申请人： Ovivo Inc.
发明人： H. David Stensel , Hiren Trivedi , John Vorwaller , Tyson Beaman
摘要： 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：US10688419B2
公开(公告)日：2020-06-23
申请号：US15425631
申请日：2017-02-06
申请人： OVIVO INC.
发明人： Andrew L. Browning
摘要： 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
申请人： Ovivo Inc.
摘要： 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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