A system for anchoring an underdrain is disclosed. The underdrain having a top surface, a bottom surface positioned opposite the top surface, a first side, and a second side positioned opposite the first side. A base grout layer is on a floor surface of a water filtration system. A reinforcement structure is within the base grout layer, with a protruding portion of the reinforcement structure extending from the base grout layer. A method includes positioning the underdrain on the base grout, with the protruding portion of the reinforcement structure positioned along at least one of the first side and the second side of the underdrain, and installing a fill grout layer onto the base grout layer, with the fill grout layer covering at least a portion of the protruding portion of the reinforcement structure.
B01D 35/00 - Dispositifs filtrants ayant des particularités non couvertes spécifiquement par les groupes , applications non couvertes spécifiquement par les groupes ; Dispositifs auxiliaires pour la filtration; Structure du carter de filtre
B01D 24/02 - Filtres à substance filtrante non agglomérée, c. à d. à substance filtrante sans aucun liant entre les particules ou les fibres individuelles qui la composent avec le lit filtrant stationnaire pendant la filtration
B01D 35/02 - Filtres adaptés à des endroits particuliers, p.ex. conduites, pompes, robinets
E01F 5/00 - Drainage de l'infrastructure des routes ou du ballast des voies ferrées par des tranchées, canivaux ou conduits
4.
CHEMICAL DOSING OF DYNAMIC MEMBRANE SYSTEMS AND METHODS THEREOF
A solid-liquid separation system configured to produce a filtrate includes an inlet zone configured to receive a solid-liquid slurry; a filter including a dynamic membrane, the dynamic membrane including a liquid-permeable supporting element having a first face, a second face opposite of the first face, and a pore size of greater than 1 micron; a first transfer stream in fluid communication with the filter and configured to transport the filtrate to external from the filter; and a mechanism for adding a chemical additive to the solid-liquid slurry in the solid-liquid separation system.
B01D 15/18 - Adsorption sélective, p.ex. chromatographie caractérisée par des caractéristiques de structure ou de fonctionnement relatives aux différents types d'écoulement
B01D 67/00 - Procédés spécialement adaptés à la fabrication de membranes semi-perméables destinées aux procédés ou aux appareils de séparation
5.
Covers for Liquid Containment Apparatuses and Systems That Include the Same
A cover for a liquid containment apparatus includes: a platform having a top surface, a first end, a second end opposite the first end, and two opposing sides that extend between the first and second ends. The cover also includes: a front wall extending down from the first end of the platform; a back wall extending down from the second end of the platform; side walls extending down from the opposing sides of the platform; and engagement members extending out from a bottom of the side walls in a lateral direction from the platform and which are configured to engage a surface of a substrate. The platform includes a plurality of holes, and the side walls include a plurality of notches that form a weir for distributing liquids. A liquid containment system is also included.
A water treatment system for treating water is provided. The water treatment system includes a basin; a pair of clarifiers disposed in the basin; a pair of collection troughs each arranged at least partially above a corresponding one of the pair of clarifiers; and at least one cover assembly comprising: a frame coupled to the pair of collection troughs, and a cover coupled to the frame, the cover being made of a nylon mesh material.
A water treatment system for treating water is provided. The water treatment system includes a basin; a pair of clarifiers disposed in the basin; a pair of collection troughs each arranged at least partially above a corresponding one of the pair of clarifiers; and at least one cover assembly comprising: a frame coupled to the pair of collection troughs, and a cover coupled to the frame, the cover being made of a nylon mesh material.
The present invention is directed to a clarifier for water treatment including a module. The module includes a planar inclined sheet; a plurality of vertically-oriented supports; and a tensioner. The at least one planar inclined sheet is tensioned between the plurality of vertically-oriented supports and the tensioner is configured to bring the planar inclined sheet to an even centerline.
The present invention is directed to a clarifier for water treatment including a module. The module includes a planar inclined sheet; a plurality of vertically-oriented supports; and a tensioner. The at least one planar inclined sheet is tensioned between the plurality of vertically-oriented supports and the tensioner is configured to bring the planar inclined sheet to an even centerline.
The present invention is directed to a clarifier for water treatment including a module. The module includes a planar inclined sheet; a plurality of vertically-oriented supports; and a tensioner. The at least one planar inclined sheet is tensioned between the plurality of vertically-oriented supports and the tensioner is configured to bring the planar inclined sheet to an even centerline.
A cover for a liquid containment apparatus includes: a platform having a top surface, a first end, a second end opposite the first end, and two opposing sides that extend between the first and second ends. The cover also includes: a front wall extending down from the first end of the platform; a back wall extending down from the second end of the platform; side walls extending down from the opposing sides of the platform; and engagement members extending out from a bottom of the side walls in a lateral direction from the platform and which are configured to engage a surface of a substrate. The platform includes a plurality of holes, and the side walls include a plurality of notches that form a weir for distributing liquids. A liquid containment system is also included.
B65D 88/36 - Grands réceptacles à couvercles flottants, p.ex. à couvertures ou à toits flottants avec des sections mobiles l'une par rapport à l'autre
B65D 88/38 - Grands réceptacles à couvercles flottants, p.ex. à couvertures ou à toits flottants avec un récepteur d'eau de ruissellement, p.ex. une gouttière
A cover for a liquid containment apparatus includes: a platform having a top surface, a first end, a second end opposite the first end, and two opposing sides that extend between the first and second ends. The cover also includes: a front wall extending down from the first end of the platform; a back wall extending down from the second end of the platform; side walls extending down from the opposing sides of the platform; and engagement members extending out from a bottom of the side walls in a lateral direction from the platform and which are configured to engage a surface of a substrate. The platform includes a plurality of holes, and the side walls include a plurality of notches that form a weir for distributing liquids. A liquid containment system is also included.
B01D 21/24 - Mécanismes d'alimentation ou d'évacuation pour bacs de décantation
B65D 88/38 - Grands réceptacles à couvercles flottants, p.ex. à couvertures ou à toits flottants avec un récepteur d'eau de ruissellement, p.ex. une gouttière
Water treatment equipment, namely, lamella clarifiers
consisting of a series of inclined lamella plates for
settling out and removing particulates from water.
Water treatment equipment, namely, water separators for cleaning and purification purposes featuring lamella clarifiers for removing particulates from water
The present invention is directed to a clarifier for water treatment including a plurality of planar inclined sheets including a flexible polymeric material. Each sheet includes a hydrophobic surface. The present invention is also directed to a clarifier that includes at least one module, each module including: a plurality of vertically-oriented supports and a planar inclined sheet including a flexible polymeric material tensioned between the plurality of vertically-oriented supports. The present invention is also directed to a water collection system of a water treatment system including: a collection trough configured to receive liquid and a buoyant member configured to support the collection trough.
The present invention is directed to a clarifier for water treatment including a plurality of planar inclined sheets including a flexible polymeric material. Each sheet includes a hydrophobic surface. The present invention is also directed to a clarifier that includes at least one module, each module including: a plurality of vertically-oriented supports and a planar inclined sheet including a flexible polymeric material tensioned between the plurality of vertically-oriented supports. The present invention is also directed to a water collection system of a water treatment system including: a collection trough configured to receive liquid and a buoyant member configured to support the collection trough.
The present invention is directed to a clarifier for water treatment including a plurality of planar inclined sheets including a flexible polymeric material. Each sheet includes a hydrophobic surface. The present invention is also directed to a clarifier that includes at least one module, each module including: a plurality of vertically-oriented supports and a planar inclined sheet including a flexible polymeric material tensioned between the plurality of vertically-oriented supports. The present invention is also directed to a water collection system of a water treatment system including: a collection trough configured to receive liquid and a buoyant member configured to support the collection trough.
An underdrain block for filtering water includes a top wall, a bottom wall, and two side walls connecting the top wall to the bottom wall to define an internal chamber. The bottom wall contains a plurality of orifices that allow liquid and solid materials to enter and exit the internal chamber. An underdrain filtering system can be formed by securing an underdrain lateral, which is formed from one or a plurality of underdrain blocks, to a filter floor. Also included is a method of preparing an underdrain lateral for providing even distribution of backwash water along the underdrain lateral and a method of validating even distribution of backwash water across an underdrain lateral.
B01D 24/24 - Filtration vers le bas, le récipient comportant des tuyaux collecteurs ou distributeurs ou des tuyaux perméables
B01D 24/46 - Régénération de la substance filtrante dans le filtre
B01D 24/00 - Filtres à substance filtrante non agglomérée, c. à d. à substance filtrante sans aucun liant entre les particules ou les fibres individuelles qui la composent
B01D 24/14 - Filtration vers le bas, le récipient comportant des tuyaux collecteurs ou distributeurs ou des tuyaux perméables
21.
Filter media retainer and underdrain system having a filter media retainer
A filter media retainer has a plate having a first end wall, a second end wall, and a pair of longitudinal sidewalls connected to opposing sides of the first end wall and the second end wall. The plate has a top surface opposite a bottom surface. A plurality of hopper-shaped compartments are formed on the top surface and have a first sloped wall and a second sloped wall angled toward the first sloped wall in a direction from the top surface toward the bottom surface. The plate further has a top sidewall on the top surface of the plate separating adjacent hopper-shaped compartments from each other. The plate further has at least one first slot extending through at least one of the first sloped wall and the second sloped wall, and at least one second slot extending through the top sidewall.
An underdrain block for filtering water includes a top wall, a bottom wall, and two side walls connecting the top wall to the bottom wall to define an internal chamber. The bottom wall contains a plurality of orifices that allow liquid and solid materials to enter and exit the internal chamber. An underdrain filtering system can be formed by securing an underdrain lateral, which is formed from one or a plurality of underdrain blocks, to a filter floor. Also included is a method of preparing an underdrain lateral for providing even distribution of backwash water along the underdrain lateral and a method of validating even distribution of backwash water across an underdrain lateral.
B01D 39/14 - Autres substances filtrantes autoportantes
B01D 35/00 - Dispositifs filtrants ayant des particularités non couvertes spécifiquement par les groupes , applications non couvertes spécifiquement par les groupes ; Dispositifs auxiliaires pour la filtration; Structure du carter de filtre
C02F 1/00 - Traitement de l'eau, des eaux résiduaires ou des eaux d'égout
23.
FILTER MEDIA RETAINER AND UNDERDRAIN SYSTEM HAVING A FILTER MEDIA RETAINER
A filter media retainer has a plate having a first end wall, a second end wall, and a pair of longitudinal sidewalls connected to opposing sides of the first end wall and the second end wall. The plate has a top surface opposite a bottom surface. A plurality of hopper-shaped compartments are formed on the top surface and have a first sloped wall and a second sloped wall angled toward the first sloped wall in a direction from the top surface toward the bottom surface. The plate further has a top sidewall on the top surface of the plate separating adjacent hopper-shaped compartments from each other. The plate further has at least one first slot extending through at least one of the first sloped wall and the second sloped wall, and at least one second slot extending through the top sidewall.
A filter system having a filter media retainer seal includes: at least one underdrain block having a top wall, a bottom wall, and a pair of side walls extending between the top wall and the bottom wall; a filter media retainer mounted onto the top wall of the at least one underdrain block; and at least one rib positioned between the underdrain block and the filter media retainer. The at least one rib forms a seal between the underdrain block and the filter media retainer, and prevents filter media from entering the underdrain block. The at least one rib can be monolithically formed to the at least one underdrain block. Alternatively, the at least one rib is monolithically formed to the filter media retainer. The rib is crushable and/or it bites into a surface on the adjoining part to reduce or eliminate the need for a separate sealant.
A method of installing a filter underdrain system includes: positioning a grout pad on a filter floor; positioning an underdrain block onto the grout pad such that the grout pad is displaced when the underdrain block is positioned on the grout pad; and inserting filler grout around the underdrain block.
A filtration system includes a plurality of underdrain blocks arranged in a side-by-side configuration so as to define a gap therebetween, the gap configured to receive grout. Each underdrain block includes a top wall, a bottom wall, and a plurality of side walls connecting the top wall and the bottom wall. A grout bridge is arranged in the gap between adjacent underdrain blocks so as to form a grout seal between the grout bridge and adjacent side walls of the adjacent underdrain blocks. The adjacent sidewalls each include a rib, each rib defining a slot. The grout bridge is arranged in adjacent slots of the adjacent sidewalls of the adjacent underdrain blocks. A method of arranging a filtration system and a grout bridge are also disclosed.
B01D 24/24 - Filtration vers le bas, le récipient comportant des tuyaux collecteurs ou distributeurs ou des tuyaux perméables
B01D 24/00 - Filtres à substance filtrante non agglomérée, c. à d. à substance filtrante sans aucun liant entre les particules ou les fibres individuelles qui la composent
Water filters and waste water purification installations for the treatment, purification, filtration and supply of water and for the treatment of waste water; effluent and sewage equipment for filtering municipal, commercial or industrial water and wastewater, namely, plastic filter underdrain blocks, clay filter underdrain blocks, porous plates for supporting media in filters, filter media, gravel for supporting filter media in filters; piping, agitators, supports and stabilizers for piping and agitators, wash troughs, nozzles, effluent troughs, weirs and baffles, weir pans, gates and guides for controlling water flow, valves, specialty filters, pilot filter equipment, blowers and compressors for supplying backwash air to filters, carriage filters, with or without skimmers all sold as a unit; sludge collection equipment for wastewater treatment, namely, floating siphon sludge collectors, skimmers and scum troughs sold as a unit; Equipment for the treatment of wastewater, namely denitrification systems, dissolved air floatation systems, aeration diffusers, diffuser piping, clarifiers, complete activated sludge processing plants, and structural parts therefor; wastewater treatment and disposal plants in the nature of activated sludge plants, and structural parts therefor for the treatment of liquid and solid contaminants included in municipal and industrial waste water, in International Class 11.
Water filters and waste water purification installations for the treatment, purification, filtration and supply of water and for the treatment of waste water; effluent and sewage equipment for filtering municipal, commercial or industrial water and wastewater, namely, plastic filter underdrain blocks, clay filter underdrain blocks, porous plates for supporting media in filters, filter media, gravel for supporting filter media in filters; piping, agitators, supports and stabilizers for piping and agitators, wash troughs, nozzles, effluent troughs, weirs and baffles, weir pans, gates and guides for controlling water flow, valves, specialty filters, pilot filter equipment, blowers and compressors for supplying backwash air to filters, carriage filters, with or without skimmers all sold as a unit; sludge collection equipment for wastewater treatment, namely, floating siphon sludge collectors, skimmers and scum troughs sold as a unit; Equipment for the treatment of wastewater, namely denitrification systems, dissolved air floatation systems, aeration diffusers, diffuser piping, clarifiers, complete activated sludge processing plants, and structural parts therefor; wastewater treatment and disposal plants in the nature of activated sludge plants, and structural parts therefor for the treatment of liquid and solid contaminants included in municipal and industrial waste water, in International Class 11.
A filtration system has at least one underdrain lateral, a flume, and at least one metering plate. The metering plate includes a plate member with at least one opening configured to receive liquid or gas therethrough at a first flow rate during a backwash function and is configured to receive liquid or gas therethrough at a second, lower flow rate during filtration. A method of metering gas into a filtration system with a metering plate is also disclosed. The metering plate allows gas to flow into each underdrain lateral at two very different flow rates.
A filtration system having an underdrain block and an underdrain wall adaptor. The underdrain wall adaptor includes a vertical end and horizontal base. The vertical end extends from a top wall to a bottom wall of an underdrain block and mates with an end portion of an underdrain block to secure the underdrain wall adaptor to the underdrain block. The horizontal base extends from the vertical end. The invention also includes a method of installing an underdrain wall adaptor. The underdrain wall adaptor controls air and water passage between the flume and the underdrain.
B01D 35/00 - Dispositifs filtrants ayant des particularités non couvertes spécifiquement par les groupes , applications non couvertes spécifiquement par les groupes ; Dispositifs auxiliaires pour la filtration; Structure du carter de filtre
B01D 46/00 - Filtres ou procédés spécialement modifiés pour la séparation de particules dispersées dans des gaz ou des vapeurs
B01D 39/00 - Substance filtrante pour fluides liquides ou gazeux
A filtration system having an underdrain block and an underdrain wall adaptor. The underdrain wall adaptor includes a vertical end and horizontal base. The vertical end extends from a top wall to a bottom wall of an underdrain block and mates with an end portion of an underdrain block to secure the underdrain wall adaptor to the underdrain block. The horizontal base extends from the vertical end. The invention also includes a method of installing an underdrain wall adaptor. The underdrain wall adaptor controls air and water passage between the flume and the underdrain.
B01D 24/00 - Filtres à substance filtrante non agglomérée, c. à d. à substance filtrante sans aucun liant entre les particules ou les fibres individuelles qui la composent
B01D 24/24 - Filtration vers le bas, le récipient comportant des tuyaux collecteurs ou distributeurs ou des tuyaux perméables
B01D 24/46 - Régénération de la substance filtrante dans le filtre
An underdrain filter block for use in draining and backwashing a filtering media in a filter bed including a top wall, a pair of side walls extending from the top wall, a bottom wall extending between the pair of side walls, and a transverse wall extending from one of the pair of side walls to the other of the pair of side walls. The top wall, the pair of side walls, and the bottom wall define an upper portion and a lower portion. The lower portion includes a grout chamber positioned between the bottom wall and the transverse wall and at least one of the bottom wall and said side walls contains an opening.
B01D 24/24 - Filtration vers le bas, le récipient comportant des tuyaux collecteurs ou distributeurs ou des tuyaux perméables
B01D 24/46 - Régénération de la substance filtrante dans le filtre
B01D 24/00 - Filtres à substance filtrante non agglomérée, c. à d. à substance filtrante sans aucun liant entre les particules ou les fibres individuelles qui la composent
B01D 24/02 - Filtres à substance filtrante non agglomérée, c. à d. à substance filtrante sans aucun liant entre les particules ou les fibres individuelles qui la composent avec le lit filtrant stationnaire pendant la filtration
34.
Method and apparatus for monitoring and controlling ozonation and aerated filtration using UV and visible spectral measurement and oxidation reduction potential
The present invention relates to a method and system for monitoring and controlling the process train of ozonation and biologically aerated filtration used in water and wastewater treatment. The process monitoring and control can be achieved by online measurement of UV/Vis absorption at one or multiple wavelengths and oxidation/reduction potential values which are compared to predetermined UV absorption and oxidation/reduction values. The air and ozone dosage of the effluent are then adjusted based on the measured values of UV/Vis absorption and oxidation/reduction potential of the effluent.
An underdrain filter block includes a top wall, a pair of side walls extending from the top wall, a bottom wall extending between the pair of side walls, first and second ribs, and a wall segment extending between the first rib and the second rib to define a grout chamber configured to receive grout during installation of the underdrain filter block.
B01D 24/24 - Filtration vers le bas, le récipient comportant des tuyaux collecteurs ou distributeurs ou des tuyaux perméables
B01D 24/00 - Filtres à substance filtrante non agglomérée, c. à d. à substance filtrante sans aucun liant entre les particules ou les fibres individuelles qui la composent
B01D 24/46 - Régénération de la substance filtrante dans le filtre
36.
Grout support installation method for filter underdrain system
A method of installing a filter underdrain system includes: positioning a grout pad on a filter floor; positioning an underdrain block onto the grout pad such that the grout pad is displaced when the underdrain block is positioned on the grout pad; and inserting filler grout around the underdrain block.
A method of installing a filter underdrain system includes: positioning a grout pad on a filter floor; positioning an underdrain block onto the grout pad such that the grout pad is displaced when the underdrain block is positioned on the grout pad; and inserting filler grout around the underdrain block.
An underdrain system for transferring forces and directing flow includes at least one underdrain block having a top wall, a bottom wall, and two side walls connecting the top wall to the bottom wall to define a block interior. An insert is disposed in the interior of the underdrain block. The insert includes force-transmitting buttresses spaced along an exterior of the insert that contacts the two side walls of the underdrain block and act to transfer downward forces acting on the top wall of the underdrain block and internal fluid forces acting on the insert to the side walls of the underdrain block. The force-transmitting buttresses can also direct hydraulic flow.
An underdrain system for transferring forces and directing flow includes at least one underdrain block having a top wall, a bottom wall, and two side walls connecting the top wall to the bottom wall to define a block interior. An insert is disposed in the interior of the underdrain block. The insert includes force-transmitting buttresses spaced along an exterior of the insert that contacts the two side walls of the underdrain block and act to transfer downward forces acting on the top wall of the underdrain block and internal fluid forces acting on the insert to the side walls of the underdrain block. The force-transmitting buttresses can also direct hydraulic flow.
An underdrain system for transferring forces and directing flow includes at least one underdrain block having a top wall, a bottom wall, and two side walls connecting the top wall to the bottom wall to define a block interior. An insert is disposed in the interior of the underdrain block. The insert includes force-transmitting buttresses spaced along an exterior of the insert that contacts the two side walls of the underdrain block and act to transfer downward forces acting on the top wall of the underdrain block and internal fluid forces acting on the insert to the side walls of the underdrain block. The force-transmitting buttresses can also direct hydraulic flow.
A method of distributing gas and liquid through an underdrain system includes: a) positioning an underdrain system on a filter floor, the underdrain system comprising at least one underdrain block and filter media positioned on top of the underdrain block; b) distributing gas sufficiently evenly through the underdrain system at a rate of less than 2 scfm/ft2 by distributing a liquid at a rate of less than 2 gpm/ft2 concurrently with the gas; c) increasing the distribution rate of the liquid, or increasing the distribution rate of the liquid and the distribution rate of the gas; d) stopping the distribution of gas; e) further increasing the distribution rate of the liquid; and f) decreasing the distribution rate of the liquid. A method of distributing gas and liquid during an upflow filtration mode is also included.
E03F 3/04 - Canalisations ou accessoires spécialement adaptés aux égouts
E01F 5/00 - Drainage de l'infrastructure des routes ou du ballast des voies ferrées par des tranchées, canivaux ou conduits
B01D 29/00 - Filtres à éléments filtrants stationnaires pendant la filtration, p.ex. filtres à aspiration ou à pression, non couverts par les groupes ; Leurs éléments filtrants
B01D 35/00 - Dispositifs filtrants ayant des particularités non couvertes spécifiquement par les groupes , applications non couvertes spécifiquement par les groupes ; Dispositifs auxiliaires pour la filtration; Structure du carter de filtre
42.
Gas-liquid distribution technique for water or wastewater filters using underdrains
2 concurrently with the gas; c) increasing the distribution rate of the liquid, or increasing the distribution rate of the liquid and the distribution rate of the gas; d) stopping the distribution of gas; e) further increasing the distribution rate of the liquid; and f) decreasing the distribution rate of the liquid. A method of distributing gas and liquid during an upflow filtration mode is also included.
A filter system having a filter media retainer seal includes: at least one underdrain block having a top wall, a bottom wall, and a pair of side walls extending between the top wall and the bottom wall; a filter media retainer mounted onto the top wall of the at least one underdrain block; and at least one rib positioned between the underdrain block and the filter media retainer. The at least one rib forms a seal between the underdrain block and the filter media retainer, and prevents filter media from entering the underdrain block. The at least one rib can be monolithically formed to the at least one underdrain block. Alternatively, the at least one rib is monolithically formed to the filter media retainer. The rib is crushable and/or it bites into a surface on the adjoining part to reduce or eliminate the need for a separate sealant.
B01D 29/11 - Filtres à éléments filtrants stationnaires pendant la filtration, p.ex. filtres à aspiration ou à pression, non couverts par les groupes ; Leurs éléments filtrants avec des éléments filtrants en forme de sac, de cage, de tuyau, de tube, de manchon ou analogue
44.
METHOD AND APPARATUS FOR MONITORING AND CONTROLLING OZONATION AND AERATED FILTRATION USING UV AND VISIBLE SPECTRAL MEASUREMENT AND OXIDATION REDUCTION POTENTIAL
The present invention relates to a method and system for monitoring and controlling the process train of ozonation and biologically aerated filtration used in water and wastewater treatment. The process monitoring and control can be achieved by online measurement of UV/Vis absorption at one or multiple wavelengths and oxidation/reduction potential values which are compared to predetermined UV absorption and oxidation/reduction values. The air and ozone dosage of the effluent are then adjusted based on the measured values of UV/Vis absorption and oxidation/reduction potential of the effluent.
A filter system for filtering particles from a liquid includes an underdrain assembly having an underdrain defining at least one underdrain chamber and a media retainer assembly. The media retainer assembly includes an upper filter media retainer plate defining a plurality of hopper-shaped cavities and a lower filter media retainer plate defining a plurality of hopper-shaped cavities corresponding to the plurality of hopper-shaped cavities on the upper plate. The plates are in a nested arrangement such that the hopper-shaped cavities on the upper plate are in alignment with the corresponding plurality of hopper-shaped cavities on the lower plate to define a plurality of passages therebetween and allow for the passage of the liquid while preventing the passage of a filter media. During a backwash operation, the upper and lower plates are relatively moveable such that the backwash fluid releases any particles lodged in the passages between the plates.
B01D 24/22 - Filtration vers le bas, la substance filtrante étant supportée par des surfaces perméables
B01D 24/02 - Filtres à substance filtrante non agglomérée, c. à d. à substance filtrante sans aucun liant entre les particules ou les fibres individuelles qui la composent avec le lit filtrant stationnaire pendant la filtration
B01D 24/46 - Régénération de la substance filtrante dans le filtre
B01D 24/24 - Filtration vers le bas, le récipient comportant des tuyaux collecteurs ou distributeurs ou des tuyaux perméables
A filter system for filtering particles from a liquid includes an underdrain assembly having an underdrain defining at least one underdrain chamber and a media retainer assembly. The media retainer assembly includes an upper filter media retainer plate defining a plurality of hopper-shaped cavities and a lower filter media retainer plate defining a plurality of hopper-shaped cavities corresponding to the plurality of hopper-shaped cavities on the upper plate. The plates are in a nested arrangement such that the hopper-shaped cavities on the upper plate are in alignment with the corresponding plurality of hopper-shaped cavities on the lower plate to define a plurality of passages therebetween and allow for the passage of the liquid while preventing the passage of a filter media. During a backwash operation, the upper and lower plates are relatively moveable such that the backwash fluid releases any particles lodged in the passages between the plates.
B01D 29/01 - Filtres à éléments filtrants stationnaires pendant la filtration, p.ex. filtres à aspiration ou à pression, non couverts par les groupes ; Leurs éléments filtrants avec des éléments filtrants plats
B01D 24/00 - Filtres à substance filtrante non agglomérée, c. à d. à substance filtrante sans aucun liant entre les particules ou les fibres individuelles qui la composent
B01D 39/14 - Autres substances filtrantes autoportantes
A dual parallel underdrain lateral for use in a filtration system having a filtration media includes a primary conduit extending along the underdrain lateral, which has a plurality of metering orifices for providing gas and liquid thereby; a secondary conduit, where the secondary conduit has a plurality of dispersion apertures in an upper side thereof to deliver the gas and liquid from the secondary conduit to the filtration media; and at least one gas conduit extending along the underdrain lateral, where the at least one gas conduit is connected to a gas source and is configured to provide the gas from the gas source directly to the primary conduit, or the secondary conduit, or any combination thereof.
An underdrain filter block for use in draining and backwashing a filtering media in a filter bed includes a top wall, a pair of side walls extending from the top wall, a bottom wall extending between the pair of side walls, and a transverse wall extending from one of the pair of side walls to the other of the pair of side walls. The top wall, the pair of side walls, and the bottom wall define an upper portion and a lower portion. The lower portion includes a grout chamber positioned between the bottom wall and the transverse wall and at least one of the bottom wall and said side walls contains an opening.
A filter system for filtering a liquid containing particles including a single media retainer plate having a top and bottom surface, and defining at least one hopper-shaped compartment having a sloped wall defining a slot spanning the top and bottom surfaces is disclosed. The plate also includes at least one baffle extending from the bottom surface and filter media disposed on the top surface. During a filtering operation of the filter system, the filter media captures the particles, such as dirt, from the liquid as the liquid passes through the filter media to an underdrain system. During a backwash operation of the filter system, the baffle is adapted to direct a backwash fluid in a vertical direction through the slot so that the backwash fluid actuates the filter media to scour the top surface of the plate and prevent the build-up of biological scaling on the plate.
B01D 29/01 - Filtres à éléments filtrants stationnaires pendant la filtration, p.ex. filtres à aspiration ou à pression, non couverts par les groupes ; Leurs éléments filtrants avec des éléments filtrants plats
B01D 39/14 - Autres substances filtrantes autoportantes
A filter system for filtering a liquid containing particles including a single media retainer plate having a top and bottom surface, and defining at least one hopper-shaped compartment having a sloped wall defining a slot spanning the top and bottom surfaces is disclosed. The plate also includes at least one baffle extending from the bottom surface and filter media disposed on the top surface. During a filtering operation of the filter system, the filter media captures the particles, such as dirt, from the liquid as the liquid passes through the filter media to an underdrain system. During a backwash operation of the filter system, the baffle is adapted to direct a backwash fluid in a vertical direction through the slot so that the backwash fluid actuates the filter media to scour the top surface of the plate and prevent the build-up of biological scaling on the plate.
A process for optimizing the carbon feed in a denitrification filter. The process utilizes in-line or off-line measurements of process variables in combination with feed forward and feedback control and increases or decreases the amount of carbon added based on a calculated reset rate determined on a periodic basis. The calculated reset rate may be a percentage of a theoretical value of the necessary carbon feed rate needed to remove the desired amount of nitrate-nitrogen. When the effluent nitrate-nitrogen is at a desired level and no rate change is necessary, the carbon feed rate is set to an average of one or more of the last filter runs. The process may also include a step wherein the carbon addition is increased immediately after backwashing to reestablish the biomass needed to produce the desired effluent in a step to regain process efficiency once that boost reestablishes the biomass.
C02F 1/40 - Dispositifs pour séparer ou enlever les substances grasses ou huileuses, ou les matières flottantes similaires
C02F 1/00 - Traitement de l'eau, des eaux résiduaires ou des eaux d'égout
C02F 3/00 - Traitement biologique de l'eau, des eaux résiduaires ou des eaux d'égout
G06Q 50/00 - Systèmes ou procédés spécialement adaptés à un secteur particulier d’activité économique, p.ex. aux services d’utilité publique ou au tourisme
An underdrain flume plate for use in a filter including at least one central opening having an upstanding flange to interface with a cut-out in an underdrain lateral to form a passageway for connecting the lateral to the flume. The flume plate may also include at least one raised channel at each end of the plate with a solid or cut-away top surface, and/or holes and/or slots for connection of the flume plate to anchor rods and may be configured to overlap one another when placed side by side. The present invention also includes a method of installing underdrain laterals in a filter, including arranging a grid of anchor rods on a filter floor such that anchor rods are provided on both sides of the flume, and providing at least one underdrain flume plate adapted for attachment to the anchor rods such that the flume plate covers the flume.
An underdrain block including a top wall, a bottom wall, and a pair of sidewalls defining a hollow interior and having a longitudinal axis, wherein the sidewalls, top wall, or both comprise at least one external detail. A handle is detachably connected to the external detail for transportation and positioning of said underdrain block. The external detail may comprise one of a protrusion or a receptacle for receiving a protrusion and the handle may include the other of a protrusion or a receptacle for receiving a protrusion. Also, a method of installing an underdrain block lateral comprising at least one underdrain block including the steps of attaching a handle to external details on the underdrain block, lifting the underdrain block lateral by the handle, positioning the underdrain block lateral into the underdrain system, and detaching the handle from the external details of the underdrain block.
An underdrain flume plate for use in a filter including at least one central opening having an upstanding flange to interface with a cut-out in an underdrain lateral to form a passageway for connecting the lateral to the flume. The flume plate may also include at least one raised channel at each end of the plate with a solid or cut-away top surface, and/or holes and/or slots for connection of the flume plate to anchor rods. The present invention also includes a method of installing an underdrain lateral with at least one flume plate.
B01D 24/42 - Dispositifs d'alimentation ou d'évacuation d'évacuation du filtrat
B01D 24/02 - Filtres à substance filtrante non agglomérée, c. à d. à substance filtrante sans aucun liant entre les particules ou les fibres individuelles qui la composent avec le lit filtrant stationnaire pendant la filtration
A method and system for removing nitrogen from a downflow denitrification media filter which optimizes the bump timing increasing productivity. The method comprises measuring the influent and effluent nitrate concentrations and determining total nitrate-nitrogen accumulation. A bump of the filter is initiated based on a comparison of the total nitrate-nitrogen accumulation with a predetermined accumulated nitrate-nitrogen value. The method may utilize a processor, having a memory, which is capable of communicating with, receiving input from and sending output to, and controlling the filter and any in-line measurement tools. The method may include a bump timing factor to adjust the bump interval when the actual operating conditions are substantially different from the operating conditions that were present when the predetermined accumulated nitrate-nitrogen value was determined. A method for predicting the bump interval and determination of an estimated time until the next bump are also included.
An underdrain filter block for use in draining and backwashing a filtering media in a filter bed includes a top wall, a pair of side walls extending from the top wall, a bottom wall extending between the pair of side walls, and a transverse wall extending from one of the pair of side walls to the other of the pair of side walls. The top wall, the pair of side walls, and the bottom wall define an upper portion and a lower portion. The lower portion includes a grout chamber positioned between the bottom wall and the transverse wall and at least one of the bottom wall and said side walls contains an opening.
An underdrain filter block for use in draining and backwashing a filtering media in a filter bed includes a top wall, a pair of sale walls extending from the top wall, a bottom wall extending between the pair of side walls, and a transverse wall extending from one of the pair of side walls to the other of the pair of side walls The top wall, tho pair of side walls, and the bottom wall define an upper portion and d lower portion. The lower portion includes a grout chamber positioned between the bottom wall and the transverse wall and at least one of the bottom wall and said side walls contains an opening
An underdrain filter block for use in draining and backwashing a filtering media in a filter bed includes a top wall, a pair of side walls extending from the top wall, and a bottom wall extending between the pair of side walls. The top wall, the pair of side walls, and the bottom wall define an upper portion and a lower portion. The lower portion includes a grout chamber having a plurality of openings defined by at least one of the bottom wall and the pair of side walls.
An underdrain filter block for use in draining and backwashing a filtering media in a filter bed includes a top wall, a pair of side walls extending from the top wall, a bottom wall extending between the pair of side walls, and a transverse wall extending from one of the pair of side walls to the other of the pair of side walls. The top wall, the pair of side walls, and the bottom wall define an upper portion and a lower portion. The lower portion includes a grout chamber positioned between the bottom wall and the transverse wall and at least one of the bottom wall and said side walls contains an opening.
An adjustable anchor rod arrangement for use with an underdrain system that includes the a pair of spaced apart legs and an elongated member adjustably attached to the legs, wherein the legs are adjustable along a longitudinal axis of the elongated member and the elongated member is adjustable along a longitudinal axis of the legs.
A backwash distribution apparatus for a filter having a filter tank and a plurality of underdrain laterals includes a first and second separator device positioned in a common main conduit to define first and second auxiliary flumes. The first and second auxiliary flumes are in fluid communication with the common main conduit and the underdrain laterals. The first separator device has at least one flume liquid metering orifice preferably located near the bottom of the first separator device so that it may be below a gas liquid interface in the first auxiliary flume. The second separator device has either a weir edge or a plurality of metering orifices (or both) for passing backwash liquid from the common main conduit into the second auxiliary flume. The second separator device creates an adequate liquid pool in the common main conduit to prevent short circuiting of gas into a liquid opening for the common main conduit and also to provide low velocity flow of backwash liquid therein, while also providing uninhibited flow of backwash gas. The second separator also controls the distribution of backwash liquid and/or gas inside the common main conduit. A method for gas backwash in the presence of liquid according to the invention is also disclosed.
Water filters and waste water purification installations for the treatment, purification, filtration and supply of water and for the treatment of waste water, effluent and sewage
An adjustable anchor rod arrangement for use with an underdrain system that includes the a pair of spaced apart legs and an elongated member adjustably attached to the legs, wherein the legs are adjustable along a longitudinal axis of the elongated member and the elongated member is adjustable along a longitudinal axis of the legs.
A backwash distribution apparatus for a filter having a filter tank and a plurality of underdrain laterals includes a first and second separator device positioned in a common main conduit to define first and second auxiliary flumes. The first and second auxiliary flumes are in fluid communication with the common main conduit and the underdrain laterals. The first separator device has at least one flume liquid metering orifice preferably located near the bottom of the first separator device so that it may be below a gas liquid interface in the first auxiliary flume. The second separator device has either a weir edge or a plurality of metering orifices (or both) for passing backwash liquid from the common main conduit into the second auxiliary flume. The second separator device creates an adequate liquid pool in the common main conduit to prevent short circuiting of gas into a liquid opening for the common main conduit and also to provide low velocity flow of backwash liquid therein, while also providing uninhibited flow of backwash gas. The second separator also controls the distribution of backwash liquid and/or gas inside the common main conduit. A method for gas backwash in the presence of liquid according to the invention is also disclosed.
09 - Appareils et instruments scientifiques et électriques
11 - Appareils de contrôle de l'environnement
Produits et services
Instrumentation for monitoring and executing denitrification processes, namely, flowmeters, concentration sensors, operator interface consoles, video display monitors, electronic valve actuators and computers Equipment and systems used to control denitrification of wastewater, namely, filter media, support gravel, underdrain blocks, weirs, valves, backwash pumps, air blowers, piping and tanks for carbon storage
09 - Appareils et instruments scientifiques et électriques
Produits et services
Instrumentation and controls for the automatic monitoring and control of municipal water treatment systems, namely, software for monitoring and control of filter systems; mechanical, pneumatic and electronic control panels; electrical controllers for valve actuators; water flow meters; water turbidimeters; water pH meters; level transmitters; head loss transmitters; video monitors; computer printers; and replacement parts and components therefor
09 - Appareils et instruments scientifiques et électriques
11 - Appareils de contrôle de l'environnement
37 - Services de construction; extraction minière; installation et réparation
42 - Services scientifiques, technologiques et industriels, recherche et conception
Produits et services
instrumentation for monitoring and executing water and wastewater treatment processes, namely, mechanical, pneumatic and electronic control panels, controllers, transmitters, gauges, receivers, tables, samplers, regulators, rate set stations, indicators, turbidimeters, pH meters, consoles, consolettes, programmable logic controllers, programmers, power supplies, cables, computers, monitors, printers, electric valve actuators, data recorders, ultrasonic flow transmitters, autodialers, venturi flow elements, permutubes, insert tubes, flumes, and parts and components therefor equipment for filtering municipal, commercial or industrial water and wastewater, namely, plastic filter underdrain blocks, clay filter underdrain blocks, porous plates for supporting media in filters, filter media, gravel for supporting filter media in filters, piping, agitators, supports and stabilizers for piping and agitators, wash troughs, nozzles, effluent troughs, weirs and baffles, weir pans, gates and guides for controlling water flow, valves, specialty filters, pilot filter equipment, blowers and compressors for supplying backwash air to filters, carriage filters, with or without skimmers; sludge collection equipment for wastewater treatment, namely, floating siphon sludge collectors, skimmers and scum troughs; blenders, namely, plow blenders for wastewater sludge treatment; and parts and components therefor installation and repair of instrumentation used by others to monitor and execute water and wastewater treatment processes, installation and repair of water and wastewater treatment equipment used by others instrumentation testing and design services for others, pilot filter testing services for others, and water and wastewater treatment equipment testing and design services for others
porous caps for supporting granular filter media above modular filter bottom components, such as underdrain blocks in wastewater treatment filters for commercial, industrial and municipal use
sludge collection systems for removing sludge from waste water treatment settling tanks, comprising drive assemblies, weirs, skimming mechanisms, floating bridges, collection headers and accompanying valves and controls
modular filter bottom components; namely, underdrain blocks for supporting and backwashing granular media in wastewater treatment filters for municipal, commercial and industrial use
