An apparatus for removing debris from water in a channel includes a bar screen assembly having a plurality of spaced apart, elongated filter bars arranged in a parallel relationship. A continuous conveyor carries a plurality of rakes. Each rake includes a plurality of spaced-apart tines interdigitated with the filter bars as the rake is moved along the filter bars by the conveyor to remove debris from the bar screen assembly. A conveyor belt retaining system includes at least one guide engaging an upstream side of an inner run of the conveyor and a counterweight connected to the at least one guide for biasing the inner run in a downstream direction.
B01D 29/64 - Regenerating the filter material in the filter by scrapers, brushes or the like, acting on the cake side of the filtering element
B01D 29/03 - Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups Filtering elements therefor with flat filtering elements self-supporting
B01D 29/44 - Edge filtering elements, i.e. using contiguous impervious surfaces
C02F 1/00 - Treatment of water, waste water, or sewage
An apparatus for removing debris from water in a channel includes a bar screen assembly having a plurality of spaced apart, elongated filter bars arranged in a parallel relationship. A continuous conveyor carries a plurality of rakes. Each rake inchides a plurality of spaced-apart tines interdigitated with the filter bars as the rake is moved along the filter bars by the conveyor to remove debris from the bar screen assernbly. A conveyor belt retaining system includes at least one guide engaging an upstream side of an inner run of the conveyor and a counterweight connected to the at least one guide for biasing the inner run in a downstream direction.
Abstract[0032) A dewatering device for removing entrained solids and debris from a liquid stream includes a housing defining a chamber. An auger has a first end positioned outside the chamber anti a second end positioned inside the chamber. A compaction zone includes a first tube fixed to the housing. A second tube is slidably rnounted on the first tube. A partition is secured to the second tube and has a first longitudinal position in the housing allowing a solids plug to forrn in the compaction zone and a second longitudinal position in the housing preventing the solids plug from forming in the compaction zone. Date Recue/Date Received 2021-01-22
B30B 9/12 - Presses specially adapted for particular purposes for squeezing-out liquid from liquid-containing material, e.g. juice from fruits, oil from oil-containing material using pressing worms or screws co-operating with a permeable casing
B30B 9/18 - Presses specially adapted for particular purposes for squeezing-out liquid from liquid-containing material, e.g. juice from fruits, oil from oil-containing material using pressing worms or screws co-operating with a permeable casing with means for adjusting the outlet for the solid
C02F 11/121 - Treatment of sludgeDevices therefor by de-watering, drying or thickening by mechanical de-watering
A dewatering device for removing entrained solids and debris from a liquid stream includes a housing defining a chamber. An auger has a first end positioned outside the chamber and a second end positioned inside the chamber. A compaction zone includes a first tube fixed to the housing. A second tube is slidably mounted on the first tube. A partition is secured to the second tube and has a first longitudinal position in the housing allowing a solids plug to form in the compaction zone and a second longitudinal position in the housing preventing the solids plug from forming in the compaction zone.
C02F 11/125 - Treatment of sludgeDevices therefor by de-watering, drying or thickening by mechanical de-watering using screw filters
B30B 9/12 - Presses specially adapted for particular purposes for squeezing-out liquid from liquid-containing material, e.g. juice from fruits, oil from oil-containing material using pressing worms or screws co-operating with a permeable casing
B30B 9/14 - Presses specially adapted for particular purposes for squeezing-out liquid from liquid-containing material, e.g. juice from fruits, oil from oil-containing material using pressing worms or screws co-operating with a permeable casing operating with only one screw or worm
A wastewater filter conversion kit for replacing filter elements connected to a shaft includes first and second conveyor segments. Each conveyor segment includes a perforated panel. At least one first tube is secured to a first end of the panel. At least one second tube is secured to a second end of the panel. The least one first tube on the first conveyor segment and the at least one second tube on the second conveyor segment are aligned along a common centerline for receiving the shaft to replace the filter elements on the shaft.
The present disclosure provides improved methods for conducting a wash cycle in a filtration unit. The methods may be used alone or in combination with one another to achieve the improvements described herein. Filtration units adapted for carrying out the novel methods are also provided. Through the use of the methods and filtration units described, significant economic benefits are obtained without a significant increase in the costs of the filtration unit or in the costs of operation of the filtration unit.
Integrated nitrification process using attached growth media, namely, Moving Bed Biofilm Reactor (MBBR), in conjunction with aerated earthen basins (lagoons) for use in wastewater treatment
Chain reaction device used to hold chain and rakes into the bar rack on a vertical unit in the nature of a flexible rake screen for use with water and wastewater equipment
Deflector used to help create the initial movement of solids on the rakes and scrapers during the wiper action, namely, flexible rake screens, used in water and wastewater treatment equipment; pusher used to help create movement of solids on the rakes and scrapers during wiper action, namely, flexible rake screens, used in water and wastewater equipment treatment
Apparatus for removing debris from channeled water that includes a bar screen assembly. The assembly includes a plurality of spaced apart screen bars, each bar having an upstream edge and a downstream edge and distal ends to which U-shaped clips are attached. Each of the clips has a bar engaging portion and a cross member engaging portion that attaches to an associated cross member. The clips operate to space the trailing edge of the screen bars a predetermined distance from associated cross members and allow easy replacement of a bar. A continuous conveyor carries a plurality of rakes having a plurality of spaced apart tines which are adapted to fit between the screen bars as the rake is moved along the bars by the conveyor. The tines of the rake have a length that substantially spans the distance between the leading edge and trailing edge of a bar, so that tips of the rake tines extend to at least the trailing edge of an associated bar. Intermediate clips may be used to support the intermediate section of the screen bars.
E02B 8/02 - Sediment base gatesSand sluicesStructures for arresting waterborne material
B01D 29/44 - Edge filtering elements, i.e. using contiguous impervious surfaces
B01D 29/64 - Regenerating the filter material in the filter by scrapers, brushes or the like, acting on the cake side of the filtering element
E03F 5/14 - Devices for separating liquid or solid substances from sewage, e.g. sand or sludge traps, rakes or grates
B01D 29/03 - Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups Filtering elements therefor with flat filtering elements self-supporting
The present disclosure provides improved methods for conducting a wash cycle in a filtration unit. The methods may be used alone or in combination with one another to achieve the improvements described herein. Filtration units adapted for carrying out the novel methods are also provided. Through the use of the methods and filtration units described, significant economic benefits are obtained without a significant increase in the costs of the filtration unit or in the costs of operation of the filtration unit.
Apparatus for removing debris from channeled water that includes a bar screen assembly. The assembly includes a plurality of spaced apart screen bars, each bar having an upstream edge and a downstream edge and distal ends to which U-shaped clips are attached. Each of the clips has a bar engaging portion and a cross member engaging portion that attaches to an associated cross member. The clips operate to space the trailing edge of the screen bars a predetermined distance from associated cross members and allow easy replacement of a bar. A continuous conveyor carries a plurality of rakes having a plurality of spaced apart tines which are adapted to fit between the screen bars as the rake is moved along the bars by the conveyor. The tines of the rake have a length that substantially spans the distance between the leading edge and trailing edge of a bar, so that tips of the rake tines extend to at least the trailing edge of an associated bar. Intermediate clips may be used to support the intermediate section of the screen bars.
Apparatus for removing debris from channeled water that includes a bar screen assembly. The assembly includes a plurality of spaced apart screen bars, each bar having an upstream edge and a downstream edge and distal ends to which U-shaped clips are attached. Each of the clips has a bar engaging portion and a cross member engaging portion that attaches to an associated cross member. The clips operate to space the trailing edge of the screen bars a predetermined distance from associated cross members and allow easy replacement of a bar. A continuous conveyor carries a plurality of rakes having a plurality of spaced apart tines which are adapted to fit between the screen bars as the rake is moved along the bars by the conveyor. The tines of the rake have a length that substantially spans the distance between the leading edge and trailing edge of a bar, so that tips of the rake tines extend to at least the trailing edge of an associated bar. Intermediate clips may be used to support the intermediate section of the screen bars.
A wastewater filter conversion kit for replacing filter elements connected to a shaft includes first and second conveyor segments. Each conveyor segment includes a perforated panel. At least one first tube is secured to a first end of the panel. At least one second tube is secured to a second end of the panel. The least one first tube on the first conveyor segment and the at least one second tube on the second conveyor segment are aligned along a common centerline for receiving the shaft to replace the filter elements on the shaft.
B01D 33/056 - Construction of filtering bands or supporting belts, e.g. devices for centering, mounting or sealing the filtering bands or the supporting belts
B01D 33/44 - Regenerating the filter material in the filter
B65G 17/08 - Conveyors having an endless traction element, e.g. a chain, transmitting movement to a continuous or substantially-continuous load-carrying surface or to a series of individual load-carriersEndless-chain conveyors in which the chains form the load-carrying surface having a load-carrying surface formed by a series of interconnected, e.g. longitudinal, links, plates, or platforms the surface being formed by the traction element
C02F 1/00 - Treatment of water, waste water, or sewage
A wastewater filter conversion kit for replacing filter elements connected to a shaft includes first and second conveyor segments. Each conveyor segment includes a perforated panel. At least one first tube is secured to a first end of the panel. At least one second tube is secured to a second end of the panel. The least one first tube on the first conveyor segment and the at least one second tube on the second conveyor segment are aligned along a common centerline for receiving the shaft to replace the filter elements on the shaft.
B65G 17/08 - Conveyors having an endless traction element, e.g. a chain, transmitting movement to a continuous or substantially-continuous load-carrying surface or to a series of individual load-carriersEndless-chain conveyors in which the chains form the load-carrying surface having a load-carrying surface formed by a series of interconnected, e.g. longitudinal, links, plates, or platforms the surface being formed by the traction element
C02F 1/00 - Treatment of water, waste water, or sewage
09 - Scientific and electric apparatus and instruments
Goods & Services
process control instrumentation and parts therefore, namely, computer software, hardware and electronic control for controlling the supply of oxygen and chemicals for industrial and municipal water treatment plants
18.
IMPROVED METHODS FOR CLEANING FILTRATION SYSTEM MEDIA
The present disclosure provides improved methods for conducting a wash cycle in a filtration unit. The methods may be used alone or in combination with one another to achieve the improvements described herein. Filtration units adapted for carrying out the novel methods are also provided. Through the use of the methods and filtration units described, significant economic benefits are obtained without a significant increase in the costs of the filtration unit or in the costs of operation of the filtration unit.
A pumped or gravity flow rotating drum screen removes unwanted solids from a flowing fluid. The drum screen may comprise: a housing having a fluid inlet end, a solid discharge end and an area between the two ends, the fluid inlet permitting a flow of influent containing unwanted solids into a hollow portion of a drum screen positioned lengthwise in the area between the two ends of the housing, the screen comprising a filter medium that retains at least a portion of the unwanted solids within the hollow portion of the drum screen and which produces a liquid effluent that is discharged from an outer surface of the drum screen, the retained solids being removable via the solid discharge end; a drive assembly configured to rotate the drum screen about an axis running the length of the drum screen; and one or more stabilization pad assemblies in contact with one or more rings circumscribing the outer surface of the drum screen at one or more locations.
B01D 33/00 - Filters with filtering elements which move during the filtering operation
B01D 33/11 - Filters with filtering elements which move during the filtering operation with rotary cylindrical filtering surfaces, e.g. hollow drums arranged for outward flow filtration
09 - Scientific and electric apparatus and instruments
Goods & Services
Electrical integrated control systems for use in treatment plants for the removal of contaminants included in liquid and gaseous municipal and industrial waste streams, and structural parts therefor
22.
WASTEWATER TREATMENT APPARATUS WITH DUAL-LEVEL CONTROL, DUAL-LEVEL CONTROL SYSTEM AND TREATMENT PROCESS
A dual-level control system for operating a wastewater treatment apparatus may include at least a primary level of control including a measurement of a process control variable to arrive at a dissolved oxygen (DO) set point and a primary mode of operating parameters including primary aeration chain timer and primary aeration chain grouping designed to achieve the DO set point when the DO set point falls within a predetermined range of values; and at least a secondary level of control to arrive at a secondary mode of operating parameters including secondary aeration chain timer and secondary aeration chain grouping designed to achieve a desired concentration of effluent total nitrogen when the DO set point either falls to or below a minimum value or rises to or above a maximum value. The process control variable may be, for example, an effluent concentration of NH3, N03, alkalinity, ORP, or a combination thereof. A wastewater treatment apparatus and a process of automatically operating a biological wastewater treatment process are also disclosed.
The disclosed method and apparatus separates solid impurities from a fluid containing solid impurities. The method and apparatus allow the introduction of influent comprising a fluid containing solid impurities into a plurality of channels and allowing at least a portion of the solid impurities initially present in the influent to settle on upward-facing surfaces of a plurality of plates forming the channels or slide down the upward-facing surfaces, while permitting fluid, which has been depleted of at least a portion of solid impurities, to flow upward toward the top edges of the plurality of plates. The influent is introduced into the plurality of channels in a manner that inhibits a disrupting or disturbing of the solid impurities, which have separated from the influent.
A method and an apparatus for treating a liquid containing impurities may include a filtering chamber configured to permit granular media to interact with liquid containing impurities, thereby removing impurities from the liquid to produce filtrate; a filtrate section for receiving the filtrate; a gas supplying system for delivering gas to the granular media in the filtering chamber for transport of a portion of the granular media to a granular media washer; a reject section in fluid communication with the granular media washer for receiving a reject mixture comprising liquid and impurities from the granular media washer; and a control unit that is configured to determine whether the portion of the granular media is being transported properly based on an amount of reject mixture in the reject section.
B01D 35/00 - Filtering devices having features not specifically covered by groups , or for applications not specifically covered by groups Auxiliary devices for filtrationFilter housing constructions
C02F 1/00 - Treatment of water, waste water, or sewage
B01D 24/14 - Downward filtration, the container having distribution or collection headers or pervious conduits
B01D 24/46 - Regenerating the filtering material in the filter
B01D 24/48 - Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof integrally combined with devices for controlling the filtration
B01D 24/36 - Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof with the filter bed fluidised during the filtration
C02F 103/02 - Non-contaminated water, e.g. for industrial water supply
25.
Care-free pumped or gravity flow rotating drum screen with stationary stabilization pad assemblies
A pumped or gravity flow rotating drum screen removes unwanted solids from a flowing fluid. The drum screen may comprise: a housing having a fluid inlet end, a solid discharge end and an area between the two ends, the fluid inlet permitting a flow of influent containing unwanted solids into a hollow portion of a drum screen positioned lengthwise in the area between the two ends of the housing, the screen comprising a filter medium that retains at least a portion of the unwanted solids within the hollow portion of the drum screen and which produces a liquid effluent that is discharged from an outer surface of the drum screen, the retained solids being removable via the solid discharge end; a drive assembly configured to rotate the drum screen about an axis running the length of the drum screen; and one or more stabilization pad assemblies in contact with one or more rings circumscribing the outer surface of the drum screen at one or more locations.
B01D 33/00 - Filters with filtering elements which move during the filtering operation
B01D 33/11 - Filters with filtering elements which move during the filtering operation with rotary cylindrical filtering surfaces, e.g. hollow drums arranged for outward flow filtration
A pumped or gravity flow rotating drum screen removes unwanted solids from a flowing fluid. The drum screen may comprise: a housing having a fluid inlet end, a solid discharge end and an area between the two ends, the fluid inlet permitting a flow of influent containing unwanted solids into a hollow portion of a drum screen positioned lengthwise in the area between the two ends of the housing, the screen comprising a filter medium that retains at least a portion of the unwanted solids within the hollow portion of the drum screen and which produces a liquid effluent that is discharged from an outer surface of the drum screen, the retained solids being removable via the solid discharge end; a drive assembly configured to rotate the drum screen about an axis running the length of the drum screen; and one or more stabilization pad assemblies in contact with one or more rings circumscribing the outer surface of the drum screen at one or more locations.
Water treatment equipment and parts therefor for use in treatment plants for the removal of contaminants included in liquid and gaseous municipal and industrial waste streams, namely, biological waste water processing and treatment equipment
Water treatment equipment and parts therefor, namely, headworks and separation equipment, equipment for removal of grit, grease and solids and solids handling equipment, for use in treatment plants for the removal of contaminants included in liquid and gaseous municipal and industrial waste streams
Water treatment equipment and parts therefor for use in treatment plants for the removal of contaminants included in liquid and gaseous municipal and industrial waste streams, namely, filtration equipment
Equipment and parts therefor for use in treatment plants for the removal of contaminants included in liquid and gaseous municipal and industrial waste streams, namely, water filtration equipment
31.
Method and apparatus for separating solid impurities from a fluid
The disclosed method and apparatus separates solid impurities from a fluid containing solid impurities. The method and apparatus allow the introduction of influent comprising a fluid containing solid impurities into a plurality of channels and allowing at least a portion of the solid impurities initially present in the influent to settle on upward-facing surfaces of a plurality of plates forming the channels or slide down the upward-facing surfaces, while permitting fluid, which has been depleted of at least a portion of solid impurities, to flow upward toward the top edges of the plurality of plates. The influent is introduced into the plurality of channels in a manner that inhibits a disrupting or disturbing of the solid impurities, which have separated from the influent.
The disclosed method and apparatus separates solid impurities from a fluid containing solid impurities. The method and apparatus allow the introduction of influent comprising a fluid containing solid impurities into a plurality of channels and allowing at least a portion of the solid impurities initially present in the influent to settle on upward-facing surfaces of a plurality of plates forming the channels or slide down the upward-facing surfaces, while permitting fluid, which has been depleted of at least a portion of solid impurities, to flow upward toward the top edges of the plurality of plates. The influent is introduced into the plurality of channels in a manner that inhibits a disrupting or disturbing of the solid impurities, which have separated from the influent.
A method and a computer program product perform a backwash process, which facilitates a reduction in a reject rate associated with a water treatment tank. If a backwash process is needed, an upper burst solenoid is operated to start an airlift flow in a first airlift path at a first position and at a first point in time, at a bottom portion of the water treatment tank, and a lower burst solenoid is operated to start an airlift flow in a second airlift path at a second position and at a second point in time. The second position is below the first position and the second point in time is after the first point in time. The airlift flow in the first and second airlift paths enables suitable water flow within the water treatment tank.
An apparatus for treating a liquid containing impurities may comprise: a filtering chamber for receiving liquid containing impurities, the filtering chamber containing granular media and configured to permit the granular media to interact with the liquid containing impurities, thereby removing impurities from the liquid to produce filtrate; a filtrate section in communication with the filtering chamber for receiving the filtrate, the filtrate section being in communication with a first outlet for outflow of the filtrate; a gas supplying system for delivering gas to the granular media in the filtering chamber for transport of a portion of the granular media to a granular media washer; and a reject section in communication with the granular media washer for receiving a reject mixture comprising liquid and impurities from the granular media washer. The reject section may be in communication with a second outlet for outflow of a portion of the reject mixture.
An apparatus for treating a liquid containing impurities may comprise: a filtering chamber for receiving liquid containing impurities, the filtering chamber containing granular media and configured to permit the granular media to interact with the liquid containing impurities, thereby removing impurities from the liquid to produce filtrate; a filtrate section in communication with the filtering chamber for receiving the filtrate, the filtrate section being in communication with a first outlet for outflow of the filtrate; a gas supplying system for delivering gas to the granular media in the filtering chamber for transport of a portion of the granular media to a granular media washer; and a reject section in communication with the granular media washer for receiving a reject mixture comprising liquid and impurities from the granular media washer. The reject section may be in communication with a second outlet for outflow of a portion of the reject mixture.
B01D 24/00 - Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof
36.
METHOD AND COMPUTER PROGRAM PRODUCT FOR TREATING LIQUID CONTAINING IMPURITIES
A method and a computer program product performs a backwash process, which facilitates a reduction in a reject rate associated with a water treatment tank. A determination is made as to whether or not the water treatment tank is in need of a backwash process, and if so, the following functions are performed. An upper burst solenoid is operated to start an airlift flow in a first airlift path at a first position and at a first point in time, at a bottom portion of the water treatment tank. A lower burst solenoid is operated to start an airlift flow in a second airlift path at a second position and at a second point in time, at a bottom portion of the water treatment tank, the second position being below the first position and the second point in time being after the first point in time. The airlift flow in the first and second airlift paths enables suitable water flow within the water treatment tank.
A method and an apparatus for treating a liquid containing impurities may include a filtering chamber configured to permit granular media to interact with liquid containing impurities, thereby removing impurities from the liquid to produce filtrate; a filtrate section for receiving the filtrate; a gas supplying system for delivering gas to the granular media in the filtering chamber for transport of a portion of the granular media to a granular media washer; a reject section in fluid communication with the granular media washer for receiving a reject mixture comprising liquid and impurities from the granular media washer; and a control unit that is configured to determine whether the portion of the granular media is being transported properly based on an amount of reject mixture in the reject section.
C02F 1/00 - Treatment of water, waste water, or sewage
B01D 35/00 - Filtering devices having features not specifically covered by groups , or for applications not specifically covered by groups Auxiliary devices for filtrationFilter housing constructions
B01D 21/24 - Feed or discharge mechanisms for settling tanks
A flexible aeration panel is described, which does not include a rigid support plate. The flexible aeration panel can include a first perforated, flexible sheet sealed to a second non-perforated flexible sheet at their peripheral edges, thereby defining one or more cavities that are in fluid communication with at least one gas inlet. The flexible aeration panel can be configured to produce preferably evenly spaced bubbles of gas when positioned in a liquid body. Applications include, but are not limited to, aeration of wastewater, lakes, streams, water basins and the like.
A sand washing apparatus may be used for separating organic material from a mixture comprising sand and organic material. The apparatus may comprise: a wash chamber for accepting a mixture comprising sand and organic material, the chamber including a lower portion; and an agitator comprising a screw having two or more flights extending into the lower portion. A method for recovering sand from a mixture comprising sand and organic material may comprise the steps of: introducing a mixture comprising sand and organic material into a water-filled chamber having a net flow of water in an upwardly direction; allowing organic material from the mixture to ascend in a net upwardly direction and allowing sand from the mixture to descend in a net downwardly direction; subjecting at least a portion of the descending sand to a turbulence; and recovering sand that has descended past the turbulence.
B03B 5/62 - Washing granular, powdered or lumpy materialsWet separating by hydraulic classifiers, e.g. of launder, tank, spiral or helical chute concentrator type
09 - Scientific and electric apparatus and instruments
Goods & Services
Ultrasonic sensors and control units used for the monitoring and control of sand movement in sand filtration systems used in water and wastewater treatment
Wastewater treatment apparatus, namely, washing and dewatering screw press to separate putrescible organic matter from screenings for wastewater treatment purposes
The disclosed process and system are used for the denitrification of wastewater. The system comprises: an influent concentration analyzer for measuring an influent dissolved oxygen concentration, an influent nitrate concentration, and an influent nitrite concentration; and a feed chemical controller for providing a feed chemical at a controlled rate. The feed chemical controller is responsive to one or more output signals provided by an automated control loop that accepts input signals from the influent concentration analyzer, which input signals relate to at least two of the influent nitrate concentration, the influent nitrite concentration, and the influent dissolved oxygen concentration.
The present disclosure describes an improved system and method for treating wastewater or other liquid. Furthermore, the present disclosure provides a control program for operating the system and method. In one embodiment, the treatment process utilizes a biological nutrient removal activated sludge process utilizing a continuously sequencing reactor (CSR).
The disclosed modular filter may include a filter medium and an external frame structure. The filter medium may form a chamber having a front side, a back side, and a periphery. The filter medium may also have a plurality of fibers. The external frame structure has at least one aperture mounted on at least one of the front side and back side of the chamber in which the external frame structure has a thickness greater than the lengths of the plurality of fibers.
B01D 29/01 - Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups Filtering elements therefor with flat filtering elements
B01D 29/05 - Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups Filtering elements therefor with flat filtering elements supported
B01D 39/04 - Organic material, e.g. cellulose, cotton
B01D 33/21 - Filters with filtering elements which move during the filtering operation with rotary plane filtering surfaces with hollow filtering discs transversely mounted on a hollow rotary shaft
B01D 33/23 - Construction of discs or component sectors thereof
B01D 33/50 - Regenerating the filter material in the filter by flushing, e.g. counter-current air-bumps with backwash arms, shoes or nozzles
B01D 29/54 - Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition in parallel connection arranged concentrically or coaxially
B01D 29/64 - Regenerating the filter material in the filter by scrapers, brushes or the like, acting on the cake side of the filtering element
The disclosed system and apparatus can be used to improve the operation of a membrane bioreactor (20) wastewater treatment system. The system may include one or more membrane filtration modules (40) having a proximal end and a distal end in which each module houses one or more membrane filters. The system and method can be configured to include the steps of interrupting the introduction or flow of feed liquid, allowing at least a portion of the feed liquid present in the one or more membrane filtration modules to drain therefrom, and to resume the introduction or feed of the feed liquid. Optionally, the system and method can include the step of allowing at least a portion of the recovered permeate to backfiush the one or more membrane filters.
The disclosed method and apparatus involves the use of sequential filters for the purification of liquid. The sequential filters may each produce rejects that can be processed separately in their respective treatment apparatus, which can be fine-tuned to the specific reject that it treats. Alternatively, the first reject may be treated while the second reject may not be treated. The rejects (whether treated or not) may be combined into a combined flow and then be recycled in the sequential filters.
B01D 24/00 - Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof
C02F 9/00 - Multistage treatment of water, waste water or sewage
A disclosed sand washing apparatus may be used for separating organic material from a mixture comprising sand and organic material. The apparatus may comprise: a wash chamber for accepting a mixture comprising sand and organic material, an agitator, a collection chamber, and a conveyor configured to transport sand away from the collection chamber. The disclosed method for recovering sand from a mixture comprising sand and organic material may comprise the steps of: introducing the mixture into a chamber, allowing organic material to ascend while allowing sand to descend, subjecting a portion of the descending sand to a turbulence that creates a lifting action, and recovering sand that has descended past the turbulence.
B03B 5/62 - Washing granular, powdered or lumpy materialsWet separating by hydraulic classifiers, e.g. of launder, tank, spiral or helical chute concentrator type
B03B 5/66 - Washing granular, powdered or lumpy materialsWet separating by hydraulic classifiers, e.g. of launder, tank, spiral or helical chute concentrator type of the hindered settling type
A disclosed sand washing apparatus may be used for separating organic material from a mixture comprising sand and organic material. The apparatus may comprise: a wash chamber for accepting a mixture comprising sand and organic material, an agitator, a collection chamber, and a conveyor configured to transport sand away from the collection chamber. The disclosed method for recovering sand from a mixture comprising sand and organic material may comprise the steps of: introducing the mixture into a chamber, allowing organic material to ascend while allowing sand to descend, subjecting a portion of the descending sand to a turbulence that creates a lifting action, and recovering sand that has descended past the turbulence.
B03B 5/62 - Washing granular, powdered or lumpy materialsWet separating by hydraulic classifiers, e.g. of launder, tank, spiral or helical chute concentrator type
B03B 5/66 - Washing granular, powdered or lumpy materialsWet separating by hydraulic classifiers, e.g. of launder, tank, spiral or helical chute concentrator type of the hindered settling type
A flexible aeration panel is described, which does not include a rigid support plate. The flexible aeration panel can comprise a first perforated, flexible sheet sealed to a second non-perforated flexible sheet at their peripheral edges, thereby defining one or more cavities that are in fluid communication with at least one gas inlet. The flexible aeration panel can be configured to produce preferably evenly spaced bubbles of gas when positioned in a liquid body. Applications include, but are not limited to, aeration of wastewater, lakes, streams, water basins and the like.
A flexible aeration panel is described, which does not include a rigid support plate. The flexible aeration panel can comprise a first perforated, flexible sheet sealed to a second nonperforated flexible sheet at their peripheral edges, thereby defining one or more cavities that are in fluid communication with at least one gas inlet. The flexible aeration panel can be configured to produce preferably evenly spaced bubbles of gas when positioned in a liquid body. Applications include, but are not limited to, aeration of wastewater, lakes, streams, water basins and the like.
A process and system for denitrification of wastewater. The process includes the steps of measuring an influent flow rate, measuring influent concentrations of nitrates, nitrites, and dissolved oxygen in the wastewater, and using the influent concentrations to determine a nominal amount of methanol to be provided for denitrification. The invention also contemplates the measurement of effluent concentrations of nitrates and nitrites (i.e., NOx), and optionally using the effluent concentrations to adjust the nominal amount of methanol being provided.
A process and system for denitrification of wastewater. The process includes the steps of measuring an influent flow rate, measuring influent concentrations of nitrates, nitrites, and dissolved oxygen in the wastewater, and using the influent concentrations to determine a nominal amount of methanol to be provided for denitrification. The invention also contemplates the measurement of effluent concentrations of nitrates and nitrites (i.e., NOx), and optionally using the effluent concentrations to adjust the nominal amount of methanol being provided.
06 - Common metals and ores; objects made of metal
07 - Machines and machine tools
08 - Hand tools and implements
17 - Rubber and plastic; packing and insulating materials
19 - Non-metallic building materials
Goods & Services
(1) Air piping manifold.
(2) Blowers, sludge removers.
(3) Rakes.
(4) Aeration chains made of hose and float assemblies which support fine bubble diffusers; overflow weirs used in wastewater treatment.
(5) Partition walls.
Modular filtration system for the treatment of water and wastewater in municipal and industrial applications, comprised of dual continuously self-cleaning, up flow sand filters and a rejects treatment device
09 - Scientific and electric apparatus and instruments
Goods & Services
AERATION CHAINS MADE OF HOSE AND FLOAT ASSEMBLIES WHICH SUPPORT FINE BUBBLE DIFFUSERS; AIR PIPING MANIFOLD, BLOWERS, PARTITION WALLS, SLUDGE REMOVERS, RAKES AND OVERFLOW WEIRS USED IN WASTEWATER TREATMENT [ ELECTRICAL CONTROL PANEL FOR WASTEWATER TREATMENT EQUIPMENT ]
