| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 210269000 | With rehabilitation means | 21 |
| 20080264851 | Dual compartment, single cabinet water softener - A water softener is composed of a cabinet of a resin bed, a brine tank, and a brine valve. The improved water softener has an outer housing having sides, a bottom, and an open top. A wall is disposed within the housing forming a brine chamber and a resin bed chamber for housing ion-exchange resin beads. Cross-contamination of the resin beads by the brine is prevented. | 10-30-2008 |
| 20110266209 | PLASMA DISCHARGE SELF-CLEANING FILTRATION SYSTEM - The present invention is directed to a novel method for cleaning a filter surface using a plasma discharge self-cleaning filtration system. The method involves utilizing plasma discharges to induce short electric pulses of nanoseconds duration at high voltages. These electrical pulses generate strong Shockwaves that disintegrate and dislodge particulate matter located on the surface of the filter. | 11-03-2011 |
| 20140263023 | Filtration Media and Filter Therefor - A filtration media and a filter assembly therefor is provided. The filtration assembly comprising a tank comprising an upper portion, a bottom portion, a water inlet in the upper portion, a water outlet, and a holding chamber at the bottom portion of the tank, a grate positioned within the tank and separating the holding chamber from the upper portion of the tank, and a filtration media positioned within the upper portion of the tank, the filtration media comprising a filter membrane having a lubricious surface for automatic de-caking of particulate when a pump connected to the tank is turned off, wherein when the pump is turned off the particulate de-cakes from the filtration media and drops through the grate to the holding chamber. | 09-18-2014 |
| 210270000 | Movable means for particle pickup and redeposit | 2 |
| 20100147759 | EXTERNAL DEVICE FOR CLEANING FILTRATION MATERIAL AND ADAPTED FOR APPLICATION TO FILTRATION DEVICE - An external device for cleaning a filtration material and adapted for application to a filtration device, in which the filtration material can be automatically cleaned easily and at low cost without requiring replacement of an existing filtration device with a newly purchased device. An external device for cleaning a filtration material is applied to a filtration device for filtering a supplied unfiltered liquid by layers of a filtration material to remove muddiness in the liquid and discharging the cleaned liquid to the outside. The cleaning device has an upstanding outer tube, a screw conveyor rotatably placed in the outer tube and transferring the filtration material upward from the lower end to the upper end of the outer tube while rub-washing the filtration material, a drive section for rotationally driving the screw conveyor, a control section for controlling rotation of the drive section, an introduction tube that introduces the filtration material into the outer tube, and a discharge tube for discharging the filtration material, having been rub-washed, into a filtration container from the inside of the outer tube. | 06-17-2010 |
| 20120292245 | FILTRATION MEDIA CLEANING APPARATUS - The cleansing apparatus is equipped with: an upright outer cylinder and a screw conveyor is rotatably provided within the outer cylinder. The screw conveyor conveys filtration media introduced through an inlet at the lower end of the outer cylinder upward to an outlet at the upper end of the outer cylinder. A drive section rotationally drives the screw conveyor. A control section controls the rotation of the drive section. A regulating blade regulates the upward movement of the filtration media is above the outlet and is coaxially with the screw conveyor. A cleansing liquid is introduced through an aperture above the regulating blade within the outer cylinder. | 11-22-2012 |
| 210271000 | Surface traversing type | 2 |
| 20160114265 | INTEGRATED UNIT FOR INTAKE AND PRETREATMENT WITH LOCAL BACKWASHING - Locally backwashing portions of filter media allows a simple and effective design of intake and pretreatment units, as well as their integration. An enclosure is used to limit portions of filter media and backwash them locally by suction, utilizing filtered water from adjacent filter media as the back wash water. Wastewater is produced at small amounts that allows efficient sludge treatment. This design enables water pretreatment at the intake unit, simplifying overall plant design and preventing damage to organisms living outside the intake unit. | 04-28-2016 |
| 210273000 | Moving fluid distributor | 1 |
| 20140238924 | CLEANING APPARATUS FOR FILTRATION LAYER IN SEAWATER INFILTRATION INTAKE - To provide a cleaning apparatus suitable for removing clogging substances trapped in a surface layer of a sand filtration layer. A cleaning apparatus equipped with drive wheels serving as a driving device configured to move across a surface of a sand filtration layer. A pump and a jet nozzle are provided as an agitation device configured to agitate a surface layer portion of the sand filtration layer only at a desired depth, and which blows the clogging substances upward into the seawater in a turbid water intake pit together with a filtration sand. A perforated pipe for suctioning turbid water, a pump, an ejector, and a discharge pipe for dilute turbid water are provided as a suction and discharge device configured to suction turbid water blown upward into seawater in the water intake pit by the agitation device, and discharge it to outside of the turbid water intake pit. Prevents clogging by performing a timely cleaning of the sand filtration layer, thereby making it possible to maintain a high-speed seawater infiltration rate for seawater. Impact on the surrounding environment is reduced, because the apparatus suctions turbid water containing clogging substances which is blown upward into the turbid water intake pit, and discharges it to outside of the system. | 08-28-2014 |
| 210274000 | Including means to apply gas to bed | 5 |
| 20100300954 | Flume system for a filter system including at least one filter having a filter bed that is periodically washed with liquid, gas or a combination thereof - A filter system having a filter bed for filtering water or wastewater, where the filter bed is periodically washed between service runs by directing washing liquid and washing gas upwardly through the filter bed. The filter system includes a filter bed and at least one flume. The flume is in fluid communication with the filter bed. Preferably, the flume is configured such that no washing liquid and washing gas interface is present in the flume. The flume may be configured such that during washing of the filter bed between service runs the flume receives a washing gas and directs the washing gas upwardly through the filter bed to assist in cleaning the filter bed between service runs. The flume may further be configured such that during washing the only liquid directed from the flume to the filter bed is residual liquid that may be present in the flume from a prior service run. | 12-02-2010 |
| 20130240433 | APPARATUS AND METHOD FOR REMOVING IMPURITIES FROM WATER OR WASTEWATER - A filter for removing at least some impurities (e.g. foreign matter of any nature including a solid, a liquid or a gas) from water or wastewater. A vibrator operably associated with at least a portion of the filter for imparting a vibrational force to enhance any one or more of numerous aspects of the filtration process including: (i) installation of the filter and/or various components thereof; (ii) servicing of the filter and/or components thereof; and, (iii) operation of the filter during a filtration cycle and a cleaning cycle. | 09-19-2013 |
| 20130306542 | Underdrain for a filter system for filtering water or wastewater and a method of washing the filter system - An apparatus for use in a filter system for filtering water or wastewater. The apparatus includes at least one underdrain lateral. The at least one underdrain lateral has at least an inner chamber, a first outer chamber and a second outer chamber. The first outer chamber and the second outer chamber are preferably in fluid communication with the inner chamber. The inner chamber, the first outer chamber and the second outer chamber are preferably formed by an inner liner and an outer liner. The outer liner is a separate piece from the inner liner and surrounds the inner liner. The inner chamber is preferably configured to simultaneously receive a liquid and a gas during a washing procedure including simultaneous use of a liquid and gas to clean a filter bed to create a liquid and gas interface in the inner chamber. | 11-21-2013 |
| 20150314221 | CLEANING SYSTEM FOR SAND FILTRATION LAYER - To reduce the size, scale of construction, and running cost of an apparatus for cleaning a sand filtration layer. A cleaning system which removes clogging sediments from a sand filtration layer | 11-05-2015 |
| 20160023129 | One-way drier filter - A one way drier filter includes: an input end cap with an input opening provided thereon; an output end cap with an output opening provided thereon; a cylinder shell having an inner space, wherein an input end and an output end of the cylinder shell are respectively covered by the input end cap and the output end cap; a granular molecular sieve provided in the inner space of the cylinder shell for dehydrating refrigerating fluid; parallel punched nets; filtering nets; glass fibers; a spring mounted at the input end of the cylinder shell; a hot air pump connected to an air inlet of the output end cap through an air tube; an air inlet valve mounted on the air inlet of the output end cap; and an air outlet valve mounted on an air outlet of the input end cap. | 01-28-2016 |
| 210275000 | Backwash or blowback means | 7 |
| 20100237003 | CERAMIC WATER PURIFICATION DEVICE - A ceramic water purifying device is provided. The device includes a silver treated packed particle bed in one embodiment. The device may also include feldspar or bottled glass. | 09-23-2010 |
| 20110174719 | Apparatus and Method for Securing Underdrain Filter Block - 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. | 07-21-2011 |
| 20130220913 | FLUID FILTERS WITH MECHANICALLY COMPACTED FILTER BEDS COMPRISING GRANULAR FILTER MEDIA AND APPARATUSES AND METHODS RELATING THERETO - A fluid filter, with a media body that comprises granular filter media and is capable of transitioning from a compacted state to an expanded state, may allow for multiple filtration cycles with regeneration of the granular filter media via backwashing cycles. Two or more of such filters may also be used in filtration apparatuses that is configured for continuous filtration including during backwashing of one of the filters. | 08-29-2013 |
| 20140021121 | FILTER MEDIA RETAINER ASSEMBLY - 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. | 01-23-2014 |
| 20140332458 | REGENERATIVE FLUID FILTRATION MICRO-CELL - Aspects of the present disclosure involve systems, methods, products, and the like, for a filtration system that incorporates a plurality of back-washable filter cells into a cell manifold for filtering contaminants from a fluid. Each of the filter cells of the filter system are a small fluid filtration unit that includes a contained granular filtration media that can independently perform regenerative filtration functions of filtration and backwash. In one particular embodiment, the cell manifold is a cylindrical-shaped manifold into which the plurality of filter cells are housed. During operation, the filter system passes fluid through one or more of the filter cells of the cell manifold during a filter cycle, and distributes fluid for backwashing the cells in a backwash cycle. The filter cells of the filtration system utilize a counter-point compaction of the granular media that radially displaces outwardly the granular media. | 11-13-2014 |
| 20150343335 | Apparatus and Method for Securing Underdrain Filter Block - 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. | 12-03-2015 |
| 210279000 | With embedded fluid distributor | 1 |
| 20160096750 | SEALING STRUCTURE AND FLUID TREATMENT UNIT - A fluid treatment unit and a sealing structure which is preferably for the fluid treatment unit are provided. The sealing structure includes: a cylinder with an opening formed at one end thereof, the cylinder comprising an inner wall surface and an outer wall surface, and an outer thread being provided on the outer wall surface; a sealing cover which is capable of hermetically cooperating with the inner wall surface of the cylinder to seal the opening; a support cover which is capable of being connected with the cylinder by thread engagement; when the support cover and the cylinder are relatively rotated in order to achieve a threaded connection of the support cover and the cylinder, the support cover is capable of supporting the sealing cover and impelling it to move in parallel so as to allow the sealing cover to reach a position at which it seals the opening. | 04-07-2016 |
| 210280000 | With agitator | 1 |
| 20160101991 | EDUCTOR CIRCULATED NUTSHELL MEDIA WATER FILTER - This patent application covers a nutshell media filter with an external, horizontally mounted media retention screen, a concentric flow inlet distributor, a vessel false bottom, the use of an educator to circulate filter media, use of jackshaft/pillow block bearing to drive the circulation pump, and a plug flow displacement step in the media cleaning cycle. | 04-14-2016 |
| 210281000 | With access opening to normally closed casing | 1 |
| 20100270228 | Methods, Compositions And Devices For Maintaining Chemical Balance Of Chlorinated Water - A composition-of-matter for use in water treatment, composed of a water-insoluble matrix and one or more amidohydrolase, such as cyanuric acid amidohydrolase, incorporated in or on the matrix, is disclosed. Also disclosed are devices containing same and methods utilizing same for water treatment. The water treatment is effected by an enzymatically-catalyzed reduction of the concentration of an amide-containing compound, such as cyanuric acid, found in chlorinated water of swimming polls, spas and other similar structures. | 10-28-2010 |
