The invention relates to a facility for filtering saltwater including a perforated slab (6), defining: an upper chamber (10) housing a filtering material resting on said slab (6), and a lower chamber (11) for collecting the filtered water, characterised in that said slab (11) is made of fibrous concrete, optionally prestressed, said concrete having: a compressive strength of 50 to 250 MPa; a bending strength of 5 to 60 MPa; and a Young's modulus of 40 to 60 GPa.
B01D 24/40 - Dispositifs d'alimentation ou d'évacuation d'alimentation
B01D 24/42 - Dispositifs d'alimentation ou d'évacuation d'évacuation du filtrat
2.
DEVICE FOR COATING WITH A FLOCCULATING POLYMER MATERIAL IN THE LIQUID STATE OF BALLAST PARTICLES USED FOR THE TREATMENT OF WATER BY BALLASTED FLOCCULATION, AND CORRESPONDING FACILITY
The invention relates to a device for coating with a flocculating polymer material in the liquid state of ballast particles used for the treatment of water by ballasted flocculation, said device comprising: a chamber; means for introducing said particles into said chamber; means for injecting said polymer in the liquid state into said chamber; means for bringing said particles into contact with said polymer in the liquid state; and means for discharging particles coated with said polymer, these being located on the periphery of said chamber.
B01J 2/00 - Procédés ou dispositifs pour la granulation de substances, en général; Traitement de matériaux particulaires leur permettant de s'écouler librement, en général, p.ex. en les rendant hydrophobes
C02F 1/52 - Traitement de l'eau, des eaux résiduaires ou des eaux d'égout par floculation ou précipitation d'impuretés en suspension
Ultra rapid water treatment process and corresponding installation. The invention relates to an ultra rapid process for treating water within a treatment installation, said process comprising: - a step of injecting at least one adsorbent charge into said water; a step of mixing said water and said at least one adsorbent charge within an agitated zone (21). According to the invention, such a process comprises: - a first step of filtration of the mixture obtained in said mixing step at a rate between 50 and 200 m/h within at least one filtration unit (24) comprising a plurality of flexible fibres; - a step of recirculating said at least one adsorbent charge upstream of said agitated zone (21); the adsorbent charge concentration of the mixture of said water and of said at least one adsorbent charge being between 0.05 and 10 grams of adsorbent charge per litre of water.
Biologically treated wastewater is directed as mixed liquor from the treatment tank to a bottom portion of a downstream filtration tank having at least one submerged membrane module that extends across substantially the entire cross sectional area of the filtration tank Mixed liquor is directed from the bottom of the filtration tank upwardly into the membrane module such that substantially all of the mixed liquor received in the bottom of the filtration tank flows through the membrane module, producing a permeate stream The remaining mixed liquor from the membrane module is recirculated to the treatment tank Once the mixed liquor in the filtration tank makes one pass through the membrane module the mixed liquor is recycled back to the treatment tank and generally not permitted to be recycled back through the membrane module without first returning to the treatment tank.
B01D 61/00 - Procédés de séparation utilisant des membranes semi-perméables, p.ex. dialyse, osmose ou ultrafiltration; Appareils, accessoires ou opérations auxiliaires, spécialement adaptés à cet effet
C02F 1/44 - Traitement de l'eau, des eaux résiduaires ou des eaux d'égout par dialyse, osmose ou osmose inverse
The invention relates to a process that includes a pretreatment for obtaining water of very high quality as feed stock for a subsequent treatment. According to the invention, said pretreatment includes at least: a first filtration step on granular filters; a step of measuring the value of at least one item of information representative of the quality of said water at the outlet of each of said granular filters; a step of comparing said measured value with a predetermined threshold value; and a second filtration step, for filtering said water coming from said granular filters (said second step being implemented when said measured value is above or below said threshold value).
The invention relates to a method for treating water charged with colloidal impurities, either dissolved or suspended, in a treatment plant, wherein said method comprises: the step of contacting said water, in an advanced oxidation area (10), with hydrogen peroxide in the presence of at least one transition-metal salt; a flocculation step that comprises contacting said water, in a flocculation area (12), with at least one flocculation additive and with at least one ballast comprising at least one non-soluble granular material denser than water and used as a biomass carrier; the step of feeding the water and floc mixture thus obtained into a settling area (14); the step of separating the treated water at the upper portion of said settling area (14) from a mixture of sludge and ballast resulting from the settling of said flocs; the step of extracting the sludge and ballast mixture at the lower portion (23) of said settling area (24); and the step of recycling at least a portion of the sludge into said advanced oxidation area (10).
The invention relates to a flotation water treatment plant comprising at least: an inlet zone (31) for the water to be treated, which is coagulated and flocculated beforehand; a mixing zone (32), for mixing pressurized and then depressurized water with said water to be treated; a flotation zone (35) separated from said mixing zone by a wall; a clarified-water take-up zone (36) provided in the lower part of said flotation zone (35). According to the technique shown here, said mixing zone accommodates (32) at least one spray nozzle (40, 91, 92) for spraying said pressurized water, said spray nozzle (40, 91, 92) lying close to a panel (33), at least part of which has perforations (331), said panel separating said inlet zone (31) from said mixing zone (32).
The technique proposed here relates to a water treatment device comprising raw water inlet means (24), treated water discharge means (17, 28) and an essentially parallelepipedal frame (10) having a bottom and a cover element (11), said frame (10) defining at least: a biological treatment zone (12) accommodating a plurality of biological discs (16); and a filtration zone (13) accommodating at least one drum filter (21), at least one part of which has perforations, and sludge collecting means (33), said biological discs (16) and said drum filter (21) both being mounted essentially on the same axis (X) and having approximately the same outside diameters, the device further including means (22) for conveying a partly biologically purified flow coming from said biological treatment zone (12) within said drum filter (21). According to the technique proposed here, such a device includes means for declogging said perforations of said drum filter (21) which comprise at least means for blowing pressurized air on the periphery of said drum filter (21).
C02F 3/08 - Procédés aérobies utilisant des corps de contact mobiles
B01D 33/067 - Structure des tambours filtrants, p.ex. dispositions pour le montage ou pour l'étanchéité
B01D 33/073 - Filtres avec éléments filtrants mobiles au cours de l'opération de filtration à surfaces filtrantes rotatives cylindriques, p.ex. tambours creux agencés pour la filtration à courant dirigé vers l'intérieur
9.
ASSEMBLY OF ULTRAFILTRATION OR MICROFILTRATION MEMBRANE MODULES, AND CORRESPONDING MEMBRANE MODULE, STRUCTURE AND MAINTENANCE METHOD
The technique of the present invention relates to membrane modules for the ultrafiltration or microfiltration of liquids such as water, that include at least one assembly of membrane modules extending essentially in a vertical plane and at least one duct, said modules each including an elongated module body provided at both opposite ends with lower and upper removable end pieces each having at least one tapping for connection to a tapping of said duct. According to this technique, the ducts of this assembly essentially extend in said vertical plane.
B01D 63/04 - Modules à fibres creuses comprenant plusieurs ensembles à fibres creuses
B01D 65/00 - Accessoires ou opérations auxiliaires, en général, pour les procédés ou les appareils de séparation utilisant des membranes semi-perméables
10.
METHOD AND PLANT FOR PROCESSING WATER BY BALLASTED FLOCCULATION AND DEPOSITION
The invention relates to a method for processing water in a plant that comprises the steps of contact water, a ballast and a flocculation agent in a flocculation area (1) for forming a flocculate, introducing the mixture thus formed into a deposition area (11), separating the processes water, extracting the sludge and ballast mixture in the lower portion of the deposition area (1) and feeding it to an agitation area for intermediate mixture (19), extracting the sludge and ballast mixture present therein (19) an submitting it to a sludge/ballast separation step (26) by hydro-cycloning, recycling the underflow in the flocculation area (1) extracting a portion of the sludge for the underflow and recirculating the other portion into the intermediate area (19), characterised in that it comprises the step of continuously measuring at least one parameter representative of the impurity concentration in the water before or during its entry in the flocculation area, and the step of using the results of the measurement thus made in order to continuously derive the ballast amount to be used in order to obtain processed water having a predetermined quality.
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.
B01D 61/00 - Procédés de séparation utilisant des membranes semi-perméables, p.ex. dialyse, osmose ou ultrafiltration; Appareils, accessoires ou opérations auxiliaires, spécialement adaptés à cet effet
The present invention relates to tappings, wherein the structure comprises a frame (8, 8a) holding a lower manifold (5), an intermediate manifold (6a) and an upper manifold (7) extending essentially horizontally, each manifold comprising tappings and including connection members (10) for connecting at least some tappings of each of said membranes modules (1) to the tappings of said manifolds (5, 6, 7). According to the invention, said connection members (10) includes tapping Tees (12) provided at least on one of said manifolds (6a), and at least a first set of removable tubular members (9, 10, 11, 13) adapted for connecting the membrane modules of a first type (1) to said manifolds.
B01D 65/00 - Accessoires ou opérations auxiliaires, en général, pour les procédés ou les appareils de séparation utilisant des membranes semi-perméables
C02F 1/44 - Traitement de l'eau, des eaux résiduaires ou des eaux d'égout par dialyse, osmose ou osmose inverse
13.
BIOLOGICAL WATER TREATMENT BY ALTERNATING CONTINUOUS AND SEQUENTIAL AERATION
A water treatment method using a biological reactor to break down the nitrogen-based pollution contained in said water, said reactor comprising a biomass aerated by aeration means, said treatment comprising simultaneous nitrification/denitrification phases, characterized in that said treatment implements two aeration modes: a continuous aeration mode; a sequential aeration mode in which the aeration interruption is triggered when the ammonia concentration reaches a low predetermined threshold while the aeration is activated when the ammonia concentration reaches a high predetermined threshold, the switching from one aeration mode to the other being activated according to the nitrate concentration in said water, said continuous aeration mode being activated when said nitrate concentration reaches a low predetermined threshold, and said sequential aeration mode being activated when said nitrate concentration reaches a high predetermined threshold.
The present invention comprises an apparatus and method for evaporating a liquid to produce a product liquid and a vapor. Liquid is evaporated under the influence of a heat transfer medium in a heat exchanger comprised of a bank of tube plates formed from corrugated sheets. Vapor produced is separated from product liquid by a vapor collector which causes vapor to flow upward and into the collector from a downward-flowing product liquid and vapor stream. Backsplash entrainment into the vapor collector is prevented by an anti-backsplash device disposed between the vapor collector and a reservoir into which product liquid flows.
The invention relates to a water treatment process comprising a first pre-treatment step which produces pretreated water and sludge, wherein said pretreated water undergoes at least one filtration step, at least one of which is a membrane filtration step, and wherein said filtration step produces waste, characterized in that said waste derived from said membrane filtration step undergoes a treatment phase which includes at least one coagulation-flocculation step followed by a second decanting step which produces sludge, wherein said coagulation-flocculation step is preceded by at least one step of adsorption onto said sludge derived from the pretreatment or the decanting step, wherein said adsorption step is aimed at removing the phosphonates contained in said water derived from said membrane filtration step.
The subject of the invention is a biofilm support component intended to be immersed in a biological water purification reactor, comprising a tubular envelope having two end openings that communicate with each other via a channel, said envelope having an inner surface delimiting said channel and an outer surface, said envelope having a series of corrugations that form deformations of said inner surface and of said outer surface, characterized in that said envelope has a length less than or equal to 15 mm and in that the volume of said corrugations that form deformations of said inner surface (131) and the volume of said corrugations that form deformations of said outer surface (132) each represent between 20 % and 29% of the total volume of said envelope.
MEMBRANE REACTOR FOR THE TREATMENT OF LIQUID EFFLUENTS, COMPRISING A MEMBRANE FOR DIFFUSION OF AN OXIDIZING GAS AND A SELECTIVE MEMBRANE, DEFINING A REACTION SPACE BETWEEN SAID MEMBRANES
The subject of the invention is a membrane reactor for the treatment of liquid effluents containing organic pollutants, of the type comprising at least one porous membrane (3) for the diffusion of an oxidizing gas, characterized in that it includes at least one selective membrane (2), (4) of said pollutants, which selective membrane defines, with said porous membrane for the diffusion of an oxidizing gas, a reaction space (31) into which said liquid effluents are injected, said reactor having means (34) for extracting retentates from said reaction space (31) and a space (32) for recovering the treated effluents, which space is separated from said reaction space (31) by said selective membrane or membranes (2), (4).
B01D 53/22 - SÉPARATION Épuration chimique ou biologique des gaz résiduaires, p.ex. gaz d'échappement des moteurs à combustion, fumées, vapeurs, gaz de combustion ou aérosols par diffusion
B01D 61/36 - Pervaporation; Distillation à membranes; Perméation liquide
B01D 63/00 - Appareils en général pour les procédés de séparation utilisant des membranes semi-perméables
The subject of the invention is a method of treating water by flocculation (4)/settling (5), comprising a step (3) for injecting a ballast and a step (7) for recirculating said ballast, characterized in that it includes a step (11) for continuously measuring the concentration of said ballast and a step of comparing said measurement with reference values. The subject of the invention is also a water treatment plant for implementing the method.
A method of manufacturing a water treatment apparatus having one or more chambers comprising the step of: filling at least one chamber with ion exchanger resin; wherein at least one ion exchanger resin is dry. Preferably, the dry ion exchange resin has a water content of 0-40 wt%, preferably 0-20 wt%, and more preferably 0-10 wt%, such that the volume of the dry ion exchange resin is 25-50 vol% less than the volume of the same ion exchange resin in a moist or wetted form. One form of suitable water treatment apparatus is an EDI apparatus comprising a plurality of chambers to form a stack, for the purification of the water. The present invention provides an easier method of filling of chambers compared with the use of wetted or moist resins, and 'over filling' of the cells of water treatment apparatus, in order to achieve results desired, and a greater flexibility of performance parameters.
C02F 1/42 - Traitement de l'eau, des eaux résiduaires ou des eaux d'égout par échange d'ions
C02F 1/469 - Traitement de l'eau, des eaux résiduaires ou des eaux d'égout par des procédés électrochimiques par séparation électrochimique, p.ex. par électro-osmose, électrodialyse, électrophorèse
B01J 39/00 - Echange de cations; Utilisation d'une substance comme échangeur de cations; Traitement d'une substance en vue d'améliorer ses propriétés d'échange de cations
B01J 47/00 - Procédés d'échange d'ions en général; Appareillage à cet effet
20.
REAGENT INJECTOR FOR EQUIPPING A WATER TREATMENT REACTOR, COMPRISING A NOZZLE ASSOCIATED WITH A DISPERSING MEMBER, AND CORRESPONDING WATER TREATMENT DEVICE
The invention concerns a reactant injector for equipping a water treatment reactor, comprising a nozzle associated with a dispersing member, and a corresponding water treatment device. The invention concerns an injector (2) of a reagent into a reactor (2) of a water treatment device, characterized in that said injector (2) comprises at least one nozzle (21) for injecting a jet of said agent, said nozzle being associated with a member for dispersing (22) said jet.
B05B 17/00 - Appareils de pulvérisation ou d'atomisation de liquides ou d'autres matériaux fluides, non couverts par les autres groupes de la présente sous-classe
B05B 9/00 - Appareillages de pulvérisation pour débiter des liquides ou d'autres matériaux fluides, n'impliquant pas de mélange avec des gaz ou des vapeurs
21.
AERATING DEVICE FOR A WATER FILTERING SYSTEM WITH IMMERSED MEMBRANES, INCLUDING A FLOOR PROVIDED WITH MEANS FOR INJECTING A GAS AND AT LEAST ONE PRESSURE BALANCING SYSTEM
The invention concerns an aerating device for a water filtering system with immersed membranes (9) designed to be installed substantially beneath said membranes (9). The invention is characterized in that it comprises a floor (1) separating an upper chamber wherein said membranes are immersed and a lower chamber comprising means for feeding a liquid to be treated and means for feeding an aerating gas, said floor being provided with plural strainers (2) and with at least one system (5) for balancing pressures between said upper and lower chambers, and in that each strainer (2) includes a substantially tubular element (13) passing through said floor and having in its upper part at least one orifice (4), and an air chamber forming element (3) mounted atop said upper part.
The invention concerns a water treatment device comprising a reactor (1) and means for injecting (2) at least one reagent into said reactor, characterized in that it comprises means for supporting said injection means mobile relative to said reactor (1) between an active position whereby the injecting means (2) are arranged inside said reactor and a retracted position whereby the injecting means (2) are brought outside said reactor.
A water treatment component for use in a host water treatment apparatus, the component (2) having a pre-determined lifetime following which the component ceases to operate. The present invention provides a component (2) and accompanying host apparatus (4) forming a system which is able to ensure that water treatment components are not used past their expected lifetime of operation, which may then damage the expected water treatment function expected by the user. Where the host apparatus (4) can display the lifetime of the component, or the remaining operational lifetime of the component (2), this could also provide the user with greater awareness of expected function of the water treatment system. The component (2) has means adapted to cooperate with the host apparatus so as to relay information about the component to the last apparatus (4).
The invention concerns a method for aqueous phase oxidation of effluents which consists in subjecting said effluents to oxidation in the presence of at least one oxidizing agent, at a temperature ranging between about 20°C and about 350°C, under pressure ranging between about 1 bar and about 160 bar, so as to mineralize part of the organic matter and in oxidizing total ammonia nitrogen contained in said effluents, said oxidation being performed inside a phase-separated reactor wherein a gas phase is arranged above the liquid phase constituted by the effluents, said method including at least one step of heating said effluents. The invention is characterized in that said heating step is essentially performed inside said reactor by the heat of the reaction oxidizing the organic matter, said heating step being preceded by a step of concentrating said effluents.
A method and system for treating water or wastewater (50) to remove both soluble BOD and suspended solids. The method entails directing first and second water or wastewater streams to a treatment system including an activated sludge system (12) and a ballasted flocculation system (10). The first water or wastewater stream is directed to the activated sludge system which includes at least one reactor (16) and a clarifier (18). The second water or wastewater stream is directed to a ballasted flocculation system (10).
The invention relates to a water treatment plant comprising means (1) for supplying water to be treated towards at least one mixing zone (3), means for injecting at least one flocculating agent (3.2) into said mixing zone, means (3.1) for injecting into said mixing zone at least one ballast-forming fine granular material which is denser than water, a settling zone (5), means (9) for discharging the mixture of granular material and sludge formed in said settling zone towards at least one unit (10) for separating the granular material and the sludge of said mixture, means (7) for discharging the clarified water from said settling zone, means (11) for discharging the excess sludge separated by said at least one separating unit, and first means for recycling the granular material separated by said at least one separating unit towards said mixing zone, characterized in that said plant includes at least one device (20) for trapping said granular material that is provided on said means for discharging the sludge originating from said at least one granular material/sludge separating unit.
The subject of the invention is a device for disinfecting water by irradiating it with at least one lamp (2) radiating in the ultraviolet range, characterized in that said lamp or lamps (2) emit radiation with a wavelength of 282 nm.
C02F 1/32 - Traitement de l'eau, des eaux résiduaires ou des eaux d'égout par irradiation par la lumière ultraviolette
A61L 2/10 - Procédés ou appareils de désinfection ou de stérilisation de matériaux ou d'objets autres que les denrées alimentaires ou les lentilles de contact; Accessoires à cet effet utilisant des phénomènes physiques des radiations des ultraviolets
28.
METHOD FOR REMOVING ORGANIC MATTER FROM WATER AND A DEVICE FOR CARRYING OUT SAID METHOD
The invention relates to a method for removing organic or synthetic organic matter from water consisting in treating water by bringing it into contact with an anionic or cationic surface charge powder material and to a device for carrying out said method. A water treating method comprising a further step consisting in removing natural or synthetic micropollutants or residual organic molecules is also disclosed.
The invention relates to a device for treating a gaseous effluent loaded with odorant compounds, comprising a reactor (1) through which said effluent can pass in transit in the presence of a washing solution, characterized in that said reactor (1) integrates a three-dimensional mesh (14) capable of promoting interfacial exchanges between said effluent and said washing solution.
B01D 53/18 - Unités d'absorption; Distributeurs de liquides
B01J 19/32 - Eléments de remplissage en forme de grille ou d'éléments composés de plusieurs pièces pour constituer une unité ou un module dans l'appareil de transfert de chaleur ou de matière
30.
WASTEWATER TREATMENT METHOD COMPRISING DECANTATION AND FINE SCREENING STAGES ET DEVICE FOR CARRYING OUT SAID METHOD
The invention relates to a wastewater treatment method for reducing the content thereof in suspended materials, in particular in parasites, comprising a decantation stage consisting in transferring said waters to a decanter at a treating rate greater than 10 m/h, wherein said decantation stage is followed by a fine screening stage carried out with the aid of a screen whose mesh size ranges from approximately 5 micrometers to approximately 25 micrometers
The inventive water treating method and arrangement successively combine at least one step consisting in biological treating at least one part of pollution contained in said waters by a fixed biomass, wherein a bio-cleaned flow logically obtainable at the and of said step, prior to the entry thereof to a next step, contains less than 2 mg/l of MES, and at least one stage for carrying out a flocculation-decantation by ballasted flocs consisting in transferring biologically treated flow to a mixing area (2), preferentially at a velocity gradient ranging from 10 s-1 to 1000 s-1, wherein at least one type of denser than water insoluble granulated material is injected and suspended matters are aggregated around said granulated material particles, in transferring the flow issued from the mixing area (2) to a decantation area, wherein the clarified flow and decantation sludges mixed with the granulated material are separated, in extracting granulated material from the decantation sludges, in recycling major part thereof is in the mixing area (2) and in removing the decantation sludges separated form the granulated material.
B01D 21/01 - Séparation par sédimentation de particules solides en suspension dans des liquides en utilisant des agents de floculation
B01D 21/06 - Bacs de décantation à racloirs mobiles à racloirs rotatifs
32.
WATER TREATMENT METHOD COMPRISING A RAPID SETTLING STEP FOLLOWED BY A FILTRATION STEP THAT IS PERFORMED DIRECTLY ON THE MICRO- OR ULTRA-FILTRATION MEMBRANES AND CORRESPONDING DEVICE
The invention relates to a water treatment method comprising a liquid/solid separation step (1) followed by at least one filtration step (2). The invention is characterised in that the liquid/solid separation step (1) comprises a settling step which is performed at a surface velocity of more than 15 m/h and in that the filtration step (2) is performed directly on at least one microfiltration or ultrafiltration membrane.
A control apparatus for a liquid dispense system having at least one liquid outlet and at least one flow control device for controlling the dispense of liquid from said outlet(s) during a dispense operation, said control apparatus comprising:-operating means for controlling the operation of the at least one flow control device to permit dispense of a desired volume of liquid from said outlet(s) during a dispense operation; recording means for recording one or more parameters of the liquid dispense system and/or the operating means during said dispense operation to create a dispense profile for said dispense operation, at least one of said recorded parameters being indicative of the flow rate of liquid at the outlet(s); and control means for controlling the operation of the operating means during a subsequent dispense operation based upon the recorded dispense profile. By recording the dispense profile of a first dispense operation, such dispense profile can be repeated, if desired, for subsequent dispense operations to dispense the same volume of liquid in a repeatable manner.
The invention concerns a gravitational separation device for water treatment for separating particles suspended in a liquid phase, said device comprising a circular tank (1), at least one channel supplying (2) water to said tank provided at the periphery thereof, a plurality of orifices (3) provided in the floor (4) of said channel, means forming deviating plates (6a) provided beneath said orifices, apron-forming means (7) provided spaced apart form the inner wall (1a) of the tank (1), means for evacuating (5) said liquid phase and means for evacuating (8a, 8b) said separated particles. The invention is characterized in that said apron-forming means (7) slope towards the inside of the tank at an angle α between 5° and 80° relative to the vertical.
brevets