| VEOLIA WATER SOLUTIONS & TECHNOLOGIES SUPPORT Patent applications |
| Patent application number | Title | Published |
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| 20120111805 | Device and Method for Cleaning a Filter Cloth - A rotary disc filter device comprises a rotary drum and a plurality of disc-shaped filter members secured about the drum. Each disc-shaped filter member has a filtering material disposed on the outside thereof. A guide bar extends longitudinally across the disc-shaped filter members and has a movable carriage mounted thereon. One or more nozzles are operatively connected to the carriage for delivering cleaning fluid onto the filtering materials. The guide bar is rotates between a cleaning position and an adjustment position. When the guide bar is in the cleaning position, the nozzle is disposed adjacent to one of the disc-shaped filter members such that the nozzle is positioned to deliver cleaning fluid onto the filtering material. When the guide bar is in the adjustment position, the carriage is movable along the guide bar without interference from the disc-shaped filter members. | 05-10-2012 |
| 20120000842 | Rotary Disc Filter and Module for Constructing Same - A rotary disc filter device includes a rotary drum and one or more disc-shaped filter members secured about the drum. Each disc-shaped filter member includes a filter and a filter support comprising a series of modules. The modules each include a base that is secured to the rotary drum and a support arm projecting outwardly from the base. The modules are interconnected and disposed around the rotary drum. | 01-05-2012 |
| 20110259832 | METHOD AND PLANT FOR THE TREATMENT OF WASTEWATER WITH A VIEW TO ELIMINATING THE ADVERSE ENDOCRINE EFFECT AND/OR THE TOXIC OR GENOTOXIC EFFECT THEREOF - The invention relates to a process for the treatment of a municipal and/or industrial wastewater with a view to combating the endocrine disrupting effect and/or the toxic effect and/or the genotoxic effect thereof and to remove the pathogenic microorganisms therefrom, comprising a step of oxidation via ozone and a step of disinfection via UV radiation with a wavelength between 185 and 350 nm, characterized in that said ozone oxidation step is carried out in a static mixer at a low dose of ozone below the ozone demand of said water. The ozone oxidation step is immediately followed by said UV-radiation disinfection step. The process comprises a step of controlling the dose of ozone used in the water during the oxidation step and includes the measurement of at least one parameter that is representative of the quality of the water. This said measurement is carried out on the water to be treated and/or on the water that has undergone the ozone oxidation step and before its UV-radiation disinfection. | 10-27-2011 |
| 20110210065 | Device and Method for Treating Water Involving a Filtration Through At Least One Submerged Membrane - The invention relates to a device and a method for treating water to be treated, said method involving a filtration through at least one membrane coupled to an activated sludge reaction chamber, characterised in that added particles are present in at least one volume of activated sludge in contact with the membrane and in that variations in a flow generated in said volume of activated sludge parallel to the membrane are applied, enabling the creation of a level of average turbulent intensity greater than that corresponding to a constant flow in the immediate proximity of the membrane. | 09-01-2011 |
| 20110192801 | Method for Treating a Liquid by Flotation Induced by Floating Particles - A method or process for removing suspended solids from water. The method entails utilizing floating particles that include a flocculant material secured or coated to the floating particles. The floating particles are directed into a lower portion of a treatment zone and as the floating particles with the attached flocculant material move upwardly through the water, suspended solids attach or agglomerate on the floating particles. Once at the surface level of the water being treated, the floating particles can be removed and a cleaning process can be implemented where the suspended solids attached or agglomerated around the floating particles can be removed and the cleaned floating particles can be recycled and used for further water treatment. | 08-11-2011 |
| 20110192795 | Water Treatment Method Including Powdered Activated Carbon Recycling - The invention relates to a water treatment method with a view to purifying the same or making it drinkable, characterised in that the method includes the following steps: a step of injecting powdered activated carbon (PAC) into said water in order to obtain a water to be treated/PAC mixture; a step of feeding said water to be treated/PAC mixture into a contacting agitated area in order to obtain an agitated water to be treated/PAC mixture; a step of filtering said water to be treated/PAC mixture within a membrane filtration unit in order to produce treated water and a PAC-rich concentrate; a step of recirculating said PAC-rich concentrate upstream from and/or within said agitated area, the PAC concentration of said mixture ranging from 1 to 10 g/l; wherein said water to be treated/PAC mixture is maintained in said agitated area for a contact duration of between 2 and 20 minutes; and the method further comprises an ozonation step of the water to be treated that comprises injecting ozone in the water to be treated before injecting PAC in order to obtain a water to be treated/ozone mixture having an ozone concentration of between 0.5 and 3 mg/l. | 08-11-2011 |
| 20110180487 | Optimized Water Treatment Installation and Process - The invention relates to a process for treating water in an installation comprising a plurality of filtration units, said process comprising at least one step of filtration of said water in said filtration units under initial filtration conditions, and an optional step of modification of the value of at least one controlled parameter within a tolerance interval. According to the inventions, such a process comprises: a step of determining the value of at least one piece of information representative of the clogging capacity of the water to be filtered; a first step of comparing said value of at least one piece of information representative of the clogging capacity with a predetermined threshold value; a step of determining limits of said tolerance interval for said at least one controlled parameter as a function of said first comparison step, said step of determining the value of said at least one piece of information representative of the clogging capacity of the water to be filtered being obtained by making said water to be filtered pass, under conditions different from said initial filtration conditions, through at least one of said filtration units constituting a control filtration unit. | 07-28-2011 |
| 20110147304 | Biological and Ballasetd Flocculation Treatment of Wastewater - A method for treating wastewater comprises biologically treating the wastewater in a fixed-biomass biological reactor and then treating the wastewater in a ballasted flocculation system. The ballasted flocculation system produces a clarified effluent and sludge containing inert granular material having biomass accumulated thereon and suspended solids. The inert granular material having biomass accumulated thereon is separated from the suspended solids and then cleaned with a cleaning solution. After separating the biomass from the cleaned inert granular material, the cleaned inert granular material is recycled for use in the ballasted flocculation system. | 06-23-2011 |
| 20110062081 | Process for Treating Waste From a Membrane Filtration Plant - The subject of the invention is a water treatment process, comprising a first pretreatment step that produces pretreated water and sludge, said pretreated water then undergoing at least one membrane filtration step that produces waste and a permeate, said permeate being conveyed to a potabilization system characterized in that said first pretreatment step comprises a first coagulation/flocculation step, and in that said waste resulting from said membrane filtration step undergoes a treatment phase that includes at least one second coagulation/flocculation step followed by a settling step that produces sludge, said settling step being preceded by at least one step of adsorption onto at least one portion of said sludge resulting from the pretreatment and/or onto a portion of said sludge originating from said settling step, said adsorption step targeting a reduction of the phosphonates contained in said waste resulting from said membrane filtration step, said process resulting in treated waste and in excess sludge. | 03-17-2011 |
| 20110062079 | PROCESS FOR TREATING WATER BY A NANOFILTRATION OR REVERSE OSMOSIS MEMBRANE SYSTEM ENABLING HIGH CONVERSION RATES DUE TO THE ELIMINATION OF ORGANIC MATTER - The invention relates to a process for treating freshwater, sea water, brackish water or water exiting a drinking water treatment plant containing organic matter, with a view to the potabilization thereof, recycling thereof, desalination thereof, or with a view to the purification thereof for an industrial application, said process comprising at least a first step ( | 03-17-2011 |
| 20110023715 | METHOD FOR TREATING WASTEWATER OR PRODUCED WATER - A method or process for treating wastewater containing high organics, silica, boron, hardness, and suspended and dissolved solids. The method includes degasifying the wastewater for the removal of dissolved gases and thereafter chemically softening the wastewater. After the chemical softening step, the wastewater is directed through a media filter or membrane which removes additional solids and precipitants. Thereafter the wastewater is directed through a sodium ion exchange that further softens the wastewater. The effluent from the ion exchange is directed through a cartridge filter and the effluent from the cartridge filter is directed through one or more reverse osmosis units. At a selected phase of the process, prior to the wastewater reaching the reverse osmosis unit or units, the pH of the wastewater is raised and maintained such that the pH of the wastewater reaching a reverse osmosis unit is at a pH greater than 10.5. | 02-03-2011 |
