Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01D—SEPARATION
  • B01D24/00—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof
  • B01D24/02—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof with the filter bed stationary during the filtration
  • B01D24/10—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof with the filter bed stationary during the filtration the filtering material being held in a closed container
  • B01D24/12—Downward filtration, the filtering material being supported by pervious surfaces
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01D—SEPARATION
  • B01D24/00—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof
  • B01D24/02—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof with the filter bed stationary during the filtration
  • B01D24/10—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof with the filter bed stationary during the filtration the filtering material being held in a closed container
  • B01D24/16—Upward filtration
  • B01D24/165—Upward filtration the filtering material being supported by pervious surfaces
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01D—SEPARATION
  • B01D24/00—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof
  • B01D24/02—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof with the filter bed stationary during the filtration
  • B01D24/10—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof with the filter bed stationary during the filtration the filtering material being held in a closed container
  • B01D24/16—Upward filtration
  • B01D24/167—Upward filtration the container having distribution or collection headers or pervious conduits
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01D—SEPARATION
  • B01D24/00—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof
  • B01D24/46—Regenerating the filtering material in the filter
  • B01D24/4631—Counter-current flushing, e.g. by air
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01D—SEPARATION
  • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
  • B01D29/50—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition
  • B01D29/52—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition in parallel connection
  • B01D29/54—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition in parallel connection arranged concentrically or coaxially
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01D—SEPARATION
  • B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
  • B01D35/30—Filter housing constructions
• • C—CHEMISTRY; METALLURGY
  • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
  • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
  • C02F1/00—Treatment of water, waste water, or sewage
  • C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01D—SEPARATION
  • B01D2201/00—Details relating to filtering apparatus
  • B01D2201/04—Supports for the filtering elements
  • B01D2201/043—Filter tubes connected to plates
• • C—CHEMISTRY; METALLURGY
  • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
  • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
  • C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
  • C02F2103/42—Nature of the water, waste water, sewage or sludge to be treated from bathing facilities, e.g. swimming pools
• • C—CHEMISTRY; METALLURGY
  • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
  • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
  • C02F2301/00—General aspects of water treatment
  • C02F2301/02—Fluid flow conditions
  • C02F2301/022—Laminar
• • C—CHEMISTRY; METALLURGY
  • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
  • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
  • C02F2303/00—Specific treatment goals
  • C02F2303/16—Regeneration of sorbents, filters

Definitions

• aspects and embodiments disclosed herein are generally directed to water treatment systems, and more specifically, to water treatment systems for use in aquatics or recreational facilities and methods of operating same.
• a regenerative media filter vessel comprises a first inlet fluidly connectable to a feed source including water to be filtered, a first outlet fluidly connectable to a filtered water use, a second inlet fluidly connectable to a source of a gas, a second outlet fluidly connectable to a drain, a tube sheet comprising a plurality of tube elements having internal volumes fluidly connected to the first outlet, a gas distributor fluidly connected to the second inlet, the gas distributor positioned below the plurality of tube elements and above the first inlet, and a fluid flow diffuser formed integral with the gas distributor and extending fully across a horizontal cross-section of the vessel, the fluid flow diffuser separating the vessel into a lower portion including the first inlet and the second outlet, and an upper portion including the tube sheet and the first outlet.
• the fluid flow diffuser includes a plate having a plurality of fluid flow apertures defined therein, the plurality of fluid flow apertures providing fluid communication between the lower portion of the vessel and the upper portion of the vessel.
• the plurality of fluid flow apertures are sized and arranged to create a laminar flow of the water to be filtered from the first inlet into the upper portion of the vessel.
• the gas distributor includes a plurality of conduits fluidly connected to the second inlet, each of the plurality of conduits including a plurality of gas flow apertures configured to direct the gas into the upper portion of the vessel.
• the plurality of gas flow apertures are configured to direct the gas into the upper portion of the vessel as bubbles.
• the plurality of gas flow apertures are sized and arranged to provide a substantially uniform distribution of gas flow across the cross-section of the vessel. In some embodiments, the plurality of gas flow apertures are sized to flow the gas into the vessel at a rate that prevents filter media and/or solids within the vessel from entering the gas distributor.
• the plurality of gas flow apertures are defined in upper portions of walls of the plurality of conduits.
• the plurality of gas flow apertures are defined in side portions of walls of the plurality of conduits.
• the plurality of conduits of the gas distributor divide the fluid flow diffuser into a plurality of subsections.
• the plurality of conduits each include upper portions extending above the fluid flow diffuser and lower portions extending below the fluid flow diffuser.
• a water filtration system comprises a regenerative media filter vessel including a housing, a feed liquid inlet, a filtered liquid outlet, a gas inlet, and a tube sheet including a plurality of tube elements having internal volumes fluidly connected to the filtered liquid outlet, the tube sheet disposed within an upper portion of the regenerative media filter vessel, a gas distributor fluidly connected to the gas inlet and disposed within the regenerative media filter vessel above the feed liquid inlet and below the tube sheet, the gas distributor including a conduit and a plurality of gas flow apertures defined in a wall of the conduit and configured to prevent flow of filter media and/or particulates from within the vessel into the gas distributor during a gas scouring operation, a fluid flow diffuser plate coupled to the gas distributor and including a plurality of fluid flow apertures configured to cause feed liquid from the feed liquid inlet to maintain a laminar flow upon passing through the fluid flow apertures into the upper portion of the regenerative media filter vessel, and
• a water filtration system comprises a regenerative media filter vessel comprising a housing, a water inlet, a water outlet, a gas inlet, and a tube sheet including a plurality of tube elements having internal volumes fluidly connected to the water outlet, a combined gas distributor and fluid flow diffuser plate fluidly connected to the gas inlet and disposed within the regenerative media filter vessel above the water inlet and below the tube sheet, the gas distributor comprising a conduit and a plurality of gas flow apertures defined in a wall of the conduit, the fluid flow diffuser plate including a plurality of fluid flow apertures and extending across a diameter of the regenerative media vessel, and at least one pump configured to direct water through the regenerative media filter vessel, a distribution of the fluid flow apertures in the fluid flow diffuser plate selected to provide a uniform fluid flow distribution of water across the tube sheet.
• a water filtration system comprising a regenerative media filter vessel comprising a housing, a fluid inlet, and a fluid outlet, a horizontally oriented fluid flow diffuser plate disposed with the vessel between the fluid inlet and the fluid outlet, a gas flow distribution conduit defined in the fluid flow diffuser plate and including a plurality of gas flow apertures configured to deliver a substantially uniform distribution of gas bubbles across a cross-section of the regenerative media filter vessel, and a source of gas fluidly connectable to the gas flow distribution conduit.
• a regenerative media filter comprising a housing having an upper portion and a lower portion, a horizontally oriented fluid flow diffuser plate disposed within the housing between the upper portion and the lower portion and including a plurality of fluid flow apertures, and a gas flow distributor conduit defined in the fluid flow diffuser plate and including a plurality of gas flow apertures configured to deliver a substantially uniform distribution of gas bubbles across a cross-section of the housing.
• a combined fluid flow diffuser and gas flow distributor for a regenerative media filter.
• the combined fluid flow diffuser and gas flow distributor comprises a fluid flow diffuser plate including a plurality of fluid flow apertures configured to be disposed within a housing of a regenerative media filter between and upper portion and a lower portion of the housing of the regenerative media filter, and a gas flow distributor conduit defined in the fluid flow diffuser plate and including a plurality of conduits fluidly connectable to a source of gas and a plurality of gas flow apertures defined in each of the plurality of conduits configured to deliver a substantially uniform distribution of gas bubbles across a cross-section of the upper portion of the housing.
• the plurality of fluid flow apertures provide fluid communication between the lower portion of the vessel and the upper portion of the vessel.
• the plurality of gas flow apertures are configured to direct the gas into the upper portion of the housing as bubbles for scrubbing a tube sheet disposed within the housing.
• the plurality of gas flow apertures are sized to flow the gas into the housing at a rate that prevents filter media and/or solids within the housing from entering the gas flow distributor conduit.
• the plurality of gas flow apertures are defined in upper portions of the gas flow distributor conduit.
• the combined fluid flow diffuser and gas flow distributor further comprises particulate deflectors disposed over each of the plurality of gas flow apertures.
• the plurality of gas flow apertures are defined in side portions of the gas flow distributor conduit.
• the gas flow distributor conduit divides the fluid flow diffuser plate into a plurality of subsections.
• the gas flow distributor conduit includes an upper portion extending above the fluid flow diffuser plate and a lower portion extending below the fluid flow diffuser plate.
• FIG. 1 illustrates an embodiment of a regenerative media filter
• FIG. 2 is a plan view of a combined gas flow distributor and fluid flow diffuser disposed within a housing of a regenerative media filter
• FIG. 3 is partially cut away view of an embodiment of a regenerative media filter
• FIG. 4 is an isometric view of a combined gas flow distributor and fluid flow diffuser for a regenerative media filter
• FIG. 5 is an elevational view of a combined gas flow distributor and fluid flow diffuser for a regenerative media filter
• FIG. 6 is a schematic cross-sectional view of another embodiment of a regenerative media filter.
• the systems and methods may provide filtration of the aquatic and/or recreational water by treatment with a media filter.
• Media filters typically function as particle removal filters by using a structure, for example, a porous structure, on which a medium may be coated.
• a regenerative media filter may comprise a tube sheet containing a plurality of porous tube elements and a perlite or diatomaceous earth (DE) media.
• Media filters generally employ a special grade medium to treat water.
• the special grade medium may be contained in a vessel or other container.
• the media filter may be a pressure-fed or high-rate media filter.
• the water to be treated may be fed to the media filter vessel, for example, by one or more pumps.
• the water may be distributed by a water distribution head before coming into contact with the special grade medium in the vessel.
• the special grade medium acts as a substrate and catches solid contaminants contained in the water.
• the filtered water is discarded from the vessel and may be returned to the source for further use in the aquatic or recreational facility.
• the vessel may include one or more vents that can be opened manually or automatically to regulate pressure within the vessel during one or more modes of operation.
• the media filter may be a regenerative media filter, an activated carbon filter, or a walnut shell filter.
• the media filter may comprise any suitable particulate media for filtering aquatic and/or recreational water.
• the media filter may comprise perlite or DE media.
• the media filter may be, for example, a DEFENDER® media filter (distributed by Evoqua Water Technologies LLC).
• the media filter may comprise a structure coated with the media.
• the media filter may comprise plastic tubes, optionally porous plastic tubes. A plurality of plastic tubes may be arranged on a tube sheet, for example, concentrically.
• the tubes may comprise a metal, such as stainless steel.
• the porous tubes may be coated with perlite or DE.
• the porous tubes may be used to prevent the substrate from passing into the filtrate of the media filter.
• the water to be treated may pass through the coating and then through the structure.
• the coating layer may provide for very fine filtration media, such that the media filter may filter liquids to a small particle size.
• the media filter may be configured to filter liquids to less than 10 pm.
• the media filter may be configured to filter liquids to less than about 10 pm, less than about 5 pm, less than about 3 pm, or less than about 1 pm.
• the media filter vessel may generally be connectable, and in use fluidly connected, to a source of water.
• a water filtration system for treating water for use in aquatics or recreational facilities.
• the water filtration system may comprise a media filter vessel connectable to a source of water.
• the water filtration system may comprise one or more lines, pipes, valves, or pumps positioned to distribute the water within the system and optionally to return the treated water to the aquatic or recreational facility after treatment.
• water filtration systems of the invention may include gas lines configured to distribute pressurized gases, such as compressed air, to one or more pneumatic components of the system.
• the water to be treated may include water for human or veterinary applications.
• the water may be used for recreational purposes, such as swimming.
• the water may be associated with a pool, spa, hot tub, water park, water fountain, aquarium, zoo, animal reserve, and the like.
• the regenerative media filter vessel may be positioned in the vicinity of the source of the water.
• the regenerative media filter vessel may be remote from the source of the aquatic and/or recreational water.
• the water to be treated may have a concentration of organic contaminants.
• the organic contaminants may include one or more of animal waste, food particles, and foreign matter such as mold, mildew, moss, and/or algae.
• While embodiments described herein generally refer to aquatic and recreational facilities water, such an application is exemplary. It should be understood that the systems and methods disclosed may be employed for filtration of any fluid to be filtered with a particulate media filter. For instance, systems and methods disclosed herein may be employed for filtration of potable water, aquaculture, irrigation, stormwater management, water for use of oil and gas processing, and other applications.
• the plurality of conduits of the gas distributor 205 are formed separately from the plurality of fluid diffuser portions or subsections 225 and the plurality of conduits of the gas distributor 205 are coupled to or connected to the plurality of fluid diffuser portions or subsections 225 by welding, with an adhesive (for example, epoxy) or with nuts and bolts or other forms of fasteners.
• the plurality of conduits of the gas distributor 205 each include upper portions extending above the fluid flow diffuser and lower portions extending below the fluid flow diffuser.

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• Chemical & Material Sciences (AREA)
• Chemical Kinetics & Catalysis (AREA)
• Life Sciences & Earth Sciences (AREA)
• Hydrology & Water Resources (AREA)
• Engineering & Computer Science (AREA)
• Environmental & Geological Engineering (AREA)
• Water Supply & Treatment (AREA)
• Organic Chemistry (AREA)
• Aeration Devices For Treatment Of Activated Polluted Sludge (AREA)

Applications Claiming Priority (2)

Publications (1)

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Family Applications (1)

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Family Cites Families (7)

• 2024
  • 2024-04-18 EP EP24793491.2A patent/EP4673243A1/de active Pending
  • 2024-04-18 CN CN202480024703.XA patent/CN120916823A/zh active Pending
  • 2024-04-18 AU AU2024257504A patent/AU2024257504A1/en active Pending
  • 2024-04-18 KR KR1020257038716A patent/KR20260026477A/ko active Pending
  • 2024-04-18 WO PCT/US2024/025213 patent/WO2024220685A1/en not_active Ceased
• 2025
  • 2025-10-01 MX MX2025011727A patent/MX2025011727A/es unknown

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