WO2021069644A1 - Systeme de traitement et de recyclage des eaux grises, procede de traitement et de recyclage des eaux grises, procede de commande d'un systeme - Google Patents
Systeme de traitement et de recyclage des eaux grises, procede de traitement et de recyclage des eaux grises, procede de commande d'un systeme Download PDFInfo
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- WO2021069644A1 WO2021069644A1 PCT/EP2020/078379 EP2020078379W WO2021069644A1 WO 2021069644 A1 WO2021069644 A1 WO 2021069644A1 EP 2020078379 W EP2020078379 W EP 2020078379W WO 2021069644 A1 WO2021069644 A1 WO 2021069644A1
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- tank
- pressure
- circuit
- treatment
- fluidic
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Classifications
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/24—Feed or discharge mechanisms for settling tanks
- B01D21/2433—Discharge mechanisms for floating particles
- B01D21/2438—Discharge mechanisms for floating particles provided with scrapers on the liquid surface for removing floating particles
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/008—Control or steering systems not provided for elsewhere in subclass C02F
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/006—Regulation methods for biological treatment
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/02—Treatment of water, waste water, or sewage by heating
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/30—Treatment of water, waste water, or sewage by irradiation
- C02F1/32—Treatment of water, waste water, or sewage by irradiation with ultraviolet light
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/444—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by ultrafiltration or microfiltration
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/50—Treatment of water, waste water, or sewage by addition or application of a germicide or by oligodynamic treatment
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/74—Treatment of water, waste water, or sewage by oxidation with air
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/002—Grey water, e.g. from clothes washers, showers or dishwashers
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/002—Construction details of the apparatus
- C02F2201/005—Valves
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/005—Processes using a programmable logic controller [PLC]
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/03—Pressure
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/42—Liquid level
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/04—Flow arrangements
- C02F2301/046—Recirculation with an external loop
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/04—Disinfection
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
- C02F3/342—Biological treatment of water, waste water, or sewage characterised by the microorganisms used characterised by the enzymes used
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
Definitions
- the field of the invention relates to gray water treatment and / or recycling systems, in particular for their reuse for certain domestic applications.
- the field of the invention also relates to the field of gray water treatment and / or recycling processes. More particularly, the field of the invention relates to that of the organization and optimization of the fluid circuit for the treatment of gray water.
- Gray water is polluted domestic water from domestic use such as showers, sinks, washing machines, rainwater or well water. Gray water does not contain, or in negligible quantities, faeces or chemical pollutants such as drugs and hydrocarbons.
- Gray water can be treated for reuse for household uses that do not require absolutely clean water such as flushing toilets, sprinkling, irrigation, washing cars, exterior surfaces or floors.
- gray water is not without its constraints, in particular it is necessary to be able to remove hair and hair from the water, soapy products as well as all dust, microfauna and microflora.
- Gray water pits are known which consist in storing gray water in a specific pit. As gray water is generally lukewarm or hot, this rise in temperature can ensure the rapid development of a bacterial fauna which degrades fats, detergents and soaps. A first drawback of these systems is that the degradation time is too long: between 14 and 21 days. A second drawback is that the polluting load is not completely degraded and does not always reach the regulatory limit threshold.
- the objective of the present invention is to provide a gray water treatment system which is free from the drawbacks of the prior art. Another objective of the invention is to provide a system allowing the treatment of gray water quickly and efficiently. Another objective is to be able to provide a gray water treatment system which is automated and adjustable in particular as a function of a possible failure or as a function of the volume of gray water received.
- the invention relates to a gray water treatment and / or recycling system.
- Said system comprises a first tank for receiving gray water, a second tank for receiving treated water and a treatment fluid circuit between the first tank and the second tank, characterized in that the first tank comprises a member for oxygenating the water in the first tank and a means for delivering enzymes to the first tank.
- the processing fluid circuit comprises a filtration unit, a microfiltration unit comprising at least one microfilter, a disinfection unit, and a membrane ultrafiltration unit.
- the fluidic processing circuit further comprises a plurality of pressure sensors for transmitting pressure information to a control automaton, at least one pressure sensor being located upstream of the filtration unit and at the same time. minus one pressure sensor fluidly arranged between the filtration unit and the ultrafiltration unit, the control automaton controlling the closing of a treatment line as a function of a threshold for crossing a pressure measured at l 'one of the pressure sensors.
- the fluidic processing circuit further comprises a plurality of pressure sensors for transmitting pressure information to a control automaton and / or the first tank comprises a level sensor for transmitting to a control automaton. receiving tank filling information. Said automaton of controls the closing of the fluidic treatment circuit according to the pressure and / or filling information.
- the fluidic treatment circuit comprises at least one pump and / or at least one solenoid valve controlled by said control automaton as a function of the pressure or filling information transmitted.
- the fluidic treatment circuit comprises a pump controlled by said control automaton as a function of the filling information of the receiving tank.
- the oxygenator and the means for delivering enzymes to the first tank can be controlled by the control machine according to the filling information of the first tank.
- the system comprises at least one return fluidic circuit for injecting into the first receiving tank and / or at an inlet of the fluidic circuit for treating the treated water coming from the second receiving tank for treated water. .
- the at least one return fluidic circuit comprises a pump and / or a solenoid valve controlled by the control automaton as a function of the pressure information of the treatment fluidic circuit and / or as a function of the filling information of the first tank.
- the processing fluid circuit comprises or is connected to one or more pumps in parallel.
- the processing fluid circuit comprises at least two microfiltration units and / or at least two disinfection units and / or at least two membrane ultrafiltration units in parallel.
- the system includes a clarifier for removing suspended solids in the first tank, including dumping an overflow into a weir or scraping.
- the invention also relates to a process for treating and / or recycling gray water. Said method comprises the following steps:
- the processing step includes:
- the method further comprises a pressure measurement in the treatment fluidic circuit by at least one pressure sensor located upstream of the filter and a pressure measurement in the treatment fluidic circuit by at least one pressure sensor.
- pressure fluidly arranged between the filter and a membrane ultrafiltration unit; and a transmission of the pressure information to a control automaton controlling the closing of a processing line as a function of a threshold for crossing a pressure measured at one of the pressure sensors.
- the invention also relates to a method of automatically controlling a system according to the present invention by a control automaton configured to perform:
- ⁇ at least one measurement of the pressure of the flow through the fluidic processing circuit
- ⁇ at least one measurement of the filling rate of the first tank; and ⁇ reinjection of a volume of treated water into the treatment fluid circuit or into the first tank as a function of the pressure measurements of the flow rate and / or the measurements of the filling rate.
- the invention also relates to a computer program product downloadable from a communication network and / or recorded on a data medium readable by a computer and / or executable by a computer.
- computer comprising computer program code instructions for implementing the automatic control method according to the invention.
- the invention relates to a data recording medium, readable by a computer, on which is recorded a computer program comprising program code instructions for implementing the automatic control method according to the invention.
- FIG. 1 a schematic view of an embodiment of the treatment system according to the invention
- FIG. 2 a schematic view of the first receiving tank according to one embodiment of the invention
- FIG. 3 a schematic view of the ultrafiltration unit
- FIG. 4 a flowchart representing an execution mode of the method according to the invention.
- FIG. 5 a schematic view of the control automaton and its connections according to one embodiment of the invention.
- FIG. 6 a schematic view of a domestic fluid installation comprising a treatment system according to the invention.
- the system comprises a first receiving tank for gray water and a second receiving tank for treated water.
- the system includes a processing fluid circuit, fluidly between the first tank and the second tank.
- the fluidic circuit comprises an inlet connected to the first tank, an outlet connected to the second tank and at least one pump for transporting the liquid from the tank.
- the fluidic treatment circuit comprises a filtration unit, a microfiltration unit comprising at least one microfilter, a disinfection unit, and a unit for membrane ultrafiltration of the water coming from the first tank.
- the first gray water reception tank 30 is more particularly described below with reference to FIG. 2.
- the first gray water reception tank 30 is a container for storing a liquid.
- the first tank 30 is intended to receive gray water from a domestic or collective installation or that of a building, a building, or even a factory. This list is not exhaustive.
- the first tank 30 is connected to a gray water inlet 31.
- the arrival of gray water 31 allows the discharge of gray water from an installation in the first tank 30.
- the first tank 30 makes it possible to store a first volume of gray water 1 and to carry out a first treatment thereof.
- the first tank 30 comprises a means for delivering ENZ enzymes into the first volume of gray water 1.
- the means for delivering ENZ enzymes may include an enzyme reservoir.
- the means for delivering ENZ enzymes may include a pump or a dispenser for introducing the enzymes from the enzyme reservoir to the first vessel 30.
- the enzyme reservoir may include a first enzyme for degradation of the enzyme. soaps and / or a second enzyme for the deterioration of detergents and possibly foams.
- composition of the ENZ enzymes may depend on the type of installation to which the system 100 according to the invention will be connected. Indeed, when the system 100 is implemented in offices or other buildings that do not include a washing machine, the enzyme delivery for the deterioration of detergents may or may not be filtered.
- ENZ enzymes advantageously allow the acceleration of the growth of bacteria and thus an effective deterioration of soaps and detergents.
- the enzymes can be formed from globular proteins which act alone, such as lysozyme, or can be in complexes of several enzymes.
- the enzymes comprise one or more polypeptide chains folded to form a three-dimensional structure corresponding to their native state. The amino acid sequence of the enzyme determines the structure of the latter structure. The structure determines the catalytic properties of the enzyme.
- the enzymes can for example be chosen according to the following list: amylase, lipase, oxidoreductase, pectinase or hemicellulase. Any other type of enzyme selected to achieve the desired function can be chosen, for example the function of deterioration of soaps.
- the concentration of the volume of enzyme injected into the first tank 30 can be set to be in a range of [0.01 mg / L; 100 mg / L], preferably between [0.05 mg; 60 mg]
- the first tank 30 includes an OXY oxygenator.
- the oxygenator OXY may include a means of producing oxygen.
- the oxygen production means is connected to the lower part of the first tank 30.
- the oxygenation unit OXY makes it possible to charge the first volume of gray water 1 with oxygen and to increase the concentration of dissolved oxygen in the first volume of gray water 1.
- the increase in dissolved oxygen advantageously favors the development of the bacteria described above. The deterioration efficiency of soaps and / or detergents is thus increased.
- the oxygenation device OXY preferably comprises an air outlet disposed below the liquid level of the first tank.
- the oxygenator OXY comprises an air inlet. The entry of air into the oxygenator OXY is carried out by suction.
- the oxygenation unit OXY preferably comprises a mixing chamber in which the sucked air is mixed with gray water coming from the first tank. Once the air and water are mixed, they are injected into the first volume of gray water 1 through an outlet.
- the oxygenator comprises a submerged aerator.
- the first tank 30 can also include a level sensor 37 of the tank.
- the level sensor 37 of the tank is configured to measure the filling rate of the first tank 30 or the volume present in the first tank 30.
- the level sensor 37 is designed to detect when the volume of the first tank 30 is reaches (one way or the other) a predetermined volume or level.
- the level sensor 37 may include a float switch or a float switch.
- the float detector includes a float attached to a link. The link is hooked to the bottom of the first tank 30. Once the level of gray water 1 reaches the length of the link, the float changes tilt, activating a switch.
- the first tank 30 comprises a clarification member.
- the clarifier is designed to remove suspended matter from the first volume of the first gray water reception tank 30.
- the clarifier comprises means for removing a suspended layer from the first volume of gray water from the first tank.
- the clarifier comprises a weir 38 from an overflow of the first tank 30.
- the weir 38 can lead the suspended matter to a collection container.
- the weir 38 is connected to the sewer.
- the clarifier comprises a squeegee for scraping the suspended part of the first volume of gray water.
- the clarifying member comprises mechanical means for setting the squeegee in motion.
- the clarifier may alternatively include means for sucking the suspended matter from the first volume of gray water.
- the first gray water reception tank 30 may include an agitator.
- the agitator is designed to mix the first volume 1 in the first tank 30.
- the mixing of the first volume advantageously accelerates the effect of enzymes on the deterioration of soaps and detergents.
- the agitator is activated after the operation of scraping the suspended matter so as not to re-mix the suspended matter in the first volume of the first receiving tank.
- the first tank 30 further comprises a fluid outlet 33.
- the fluid outlet 33 advantageously allows the flow of the first volume of gray water 1.
- the fluid outlet 33 of the first tank 30 may include a fluid flow means such as an outlet pipe.
- the fluidic outlet 33 is fluidly connected to the processing fluidic circuit or to the pumping line.
- System 100 includes at least one pumping line.
- the pumping line comprises at least one pumping means designed to move a flow rate Q from the first tank 30 through the fluid outlet 33 to the second tank 20 through the processing fluid circuit 10.
- the pumping line preferably comprises a fluidic pump 12 making it possible to suck and deliver a liquid.
- upstream or “downstream” with reference to another element will be used to refer to a means arranged respectively before or after this element in the direction of fluid flow.
- the pumping line includes an inlet valve 11 disposed upstream of the fluidic pump 12.
- the inlet valve 11 is a shut-off valve.
- the pumping line may also include a non-return valve 13.
- the non-return valve 13 advantageously makes it possible to prevent the return of the liquid present in the fluidic treatment circuit 10 to the first tank 30 for receiving gray water, in particular when the pump 12 is is not activated.
- the pumping line also comprises an outlet valve 14.
- the outlet valve 14 of the pumping line is arranged downstream of the fluidic pump 12.
- the outlet valve 14 is preferably a solenoid valve, that is to say a solenoid valve. electrically controlled valve.
- the non-return valve 13 is preferably arranged downstream of the pump 12 or between the pump 12 and the outlet valve 14. Such an arrangement advantageously makes it possible to prevent the liquid from returning to the pump 12, in particular when the valve is closed. outlet 14.
- the system 100 comprises two, three or at least three pumping lines as described above, arranged in parallel.
- a plurality of pumping lines in parallel advantageously makes it possible to modulate the flow rate Q in the fluidic treatment circuit.
- Each pumping line can be activated or deactivated using the inlet valves and / or the outlet valves 14.
- the flow rate of each pumping line can be modulated using the power of the pump 12 or the output valves. outlet valves 14. Filtering
- the fluidic processing circuit 10 is more particularly described below with reference to FIG. 1.
- the fluidic treatment circuit 10 is fluidly connected to the pumping line (s). The fluidic treatment circuit 10 therefore receives fluid inlet gray water from the fluid outlet 33 of the first tank.
- the processing fluid circuit 10 comprises a FIL filtration unit.
- the FIL filtration unit allows a first filtering of the flow Q.
- the FIL filtration unit is preferably designed for colloidal elements such as hair or hair present in gray water.
- the FIL filtration unit also allows filtration of smaller elements.
- the FIL filtration unit can include a paper filter or a sand filter. More preferably, the FIL filtration unit comprises a glass media filter.
- the glass media filter comprises a matrix of glass granules.
- the glass media filter retains any particles that are too large to pass through it.
- the quality of filtration can be improved by adding a flocculant.
- the flocculant advantageously makes it possible to reduce the spaces between the granules.
- the glass granules are granules with a polished surface. The polished surface of the granules advantageously reduces the risk of bacteria forming in the FIL filtration unit.
- the filtration fineness is between 50 ⁇ m and 10 ⁇ m. preferably, the filtration fineness is around 30pm.
- fineness of filtration is understood to mean the average value of the interstices between the granules.
- the fineness of filtration can be measured by measuring the dimensions of the largest particles making up the filtrate at the end of the filtration.
- the fluidic treatment circuit 10 comprises a microfiltration unit.
- the microfiltration unit includes at least one microfilter MF1, MF2, MF3.
- the fineness or porosity of said at least one microfilter MF1, MF2, MF3 is less than that of the FIL filtration unit.
- the microfiltration unit is preferably arranged downstream of the FIL filtration unit.
- the microfiltration unit advantageously makes it possible to filter the flow rate Q in the fluidic circuit with a filtration fineness lower than that of the filtration unit FIL.
- the microfiltration unit allows advantageously to separate the microparticles from the liquid which have not been filtered by the FIL filtration unit.
- the at least one microfilter MF1, MF2, MF3 allows separation of the liquid and the microparticles by sieving.
- the at least one microfilter MF1, MF2, MF3 comprises a porous membrane. The pores of the porous membrane allow the passage of the liquid while retaining the particles having dimensions greater than the dimensions of said pores.
- the microfiltration unit comprises several microfilters MF1, MF2, MF3 in series.
- the different microfilters MF1, MF2, MF3 in series comprise a different porosity.
- the microfilters MF1, MF2, MF3 are arranged in series in the fluidic treatment circuit 10 in a degressive manner.
- the MF1, MF2, MF3 microfilters in series allow a degressive filtration in several stages of the flow rate Q.
- each microfilter in series comprises a lower porosity than the adjacent microfilter upstream.
- each microfilter in series comprises a porosity of between 2 ⁇ m and 15 ⁇ m less than the porosity of the adjacent microfilter upstream.
- the microfiltration unit comprises 3 microfilters MF1, MF2, MF3 including:
- the processing fluid circuit 10 comprises a DI disinfection unit.
- the DI disinfection unit is preferably arranged downstream of the microfiltration unit, but the DI disinfection unit can also be arranged upstream of the FIL filtration unit or between two microfilters MF1, MF2, MF3 of the microfiltration unit.
- the DI disinfection unit eliminates or kills microorganisms such as germs and microbes or inhibits the growth of germs.
- the DI disinfection unit can include heating means.
- the heating means are designed to heat the flow rate Q up to a boiling point of the liquid.
- the DI disinfection unit comprises means for injecting ozone.
- the DI disinfection unit comprises means for greening the flow by means of gaseous chlorine.
- the DI disinfection unit comprises an ultraviolet source.
- the DI disinfection unit comprises a tank, preferably cylinder-shaped, comprising an ultraviolet light source extending over at least half of the length of the tank. This arrangement advantageously makes it possible to disinfect in a continuous flow the flow rate Q by minimizing the energy input relative to the heating and by reducing the risk of chemical accident compared to the injection of ozone.
- the fluidic treatment circuit 10 comprises a UFIL membrane ultrafiltration unit.
- the UFIL ultrafiltration unit allows the separation of bacteria, yeasts and part of the viruses present in the Q flow. Ultrafiltration advantageously removes the materials dissolved in water.
- the UFIL membrane ultrafiltration unit is arranged downstream of the FIL filtration unit and downstream of the DI disinfection unit.
- the UFIL ultrafiltration unit comprises a membrane filter through which the flow rate Q passes through under the effect of pressure, retaining the materials dissolved in the water.
- the UFIL membrane ultrafiltration unit includes a reverse osmosis device.
- the reverse osmosis device comprises two adjacent ducts: a first duct 45 and a second duct 46.
- the first and second duct are separated by an ultrafiltration membrane 44.
- the first duct 45 comprises a first fluid inlet 41 with a flow rate Q of microfiltered and disinfected water.
- the first fluidic inlet 41 is connected downstream of the FIL filtration unit and / or downstream of the microfiltration unit.
- the second conduit 46 includes a second fluid inlet 47 for treated water.
- the second fluidic inlet 47 can be connected to a supply circuit 23 described below.
- the second fluidic inlet 47 can be connected to a drinking water circuit.
- the pressure in the first conduit 45 is greater than the pressure in the second conduit 46.
- the pressure difference between the first conduit 45 and the second conduit 46 is preferably greater than the osmotic pressure.
- the difference in pressure and the difference in the concentration of dissolved materials in the first and second ducts cause the membrane 44 to pass through the water molecules of the first duct 45 by reverse osmosis.
- the second duct 46 therefore recovers at the fluid outlet 42 the flow from the second inlet 47 and the flow of water, denoted Qu, having passed through the membrane 44.
- the fluidic outlet 43 of the first duct 45 comprises the soluble substances in a concentration greater than the concentration of the flow entering the first fluidic inlet 41.
- the first duct 45 and the second duct 46 are arranged against the current.
- said treated water injected by the second fluid inlet 47 comes from the second tank 20.
- the system 100 comprises a means of fluid connection between the second tank 20 and the second fluid inlet 47 of treated water from the reverse osmosis device.
- the fluid outlet 43 of the first conduit 45 is intended to be connected to a recovery container or intended to be connected to the sewer.
- the fluidic outlet 42 of the second duct 46 is preferably fluidly connected to the second tank 20.
- the second tank 20 is arranged downstream of the fluidic treatment circuit 10 and downstream of the UFIL ultrafiltration unit, in particular downstream of the fluidic outlet 42 of the second duct 46.
- the system 100 comprises a pressure maintenance balloon 17.
- the pressure maintenance balloon 17 is connected in bypass with the processing fluid circuit 10.
- the pressure maintenance balloon 17 makes it possible to maintain a pressure in the process.
- the fluidic treatment circuit 10 when cutting or reopening the fluidic treatment circuit 10.
- the system 100 comprises a valve upstream of the pressure-maintaining tank 17. Such a valve advantageously makes it possible to activate or deactivate the function of the pressure-maintaining tank 17.
- the fluidic treatment circuit 10 can comprise at least two microfiltration units in parallel.
- the processing fluid circuit 10 can comprise at least two disinfection units in parallel.
- the processing fluid circuit 10 can include at least two ultrafiltration units in parallel.
- the processing fluid circuit 10 comprises two processing lines in parallel.
- the treatment lines are each connected to the FIL filtration unit.
- the treatment lines are interconnected downstream of the ultrafiltration units.
- Each parallel line includes a microfiltration unit, a DI disinfection unit and a UFIL ultrafiltration unit.
- the presence of several lines in parallel advantageously makes it possible to increase the total flow rate of treated water at the outlet of the fluidic treatment circuit.
- the presence of several lines in parallel also makes it possible to cut a line in the event of leakage, breakdown or jamming of the microfilters or the microfiltration unit.
- the presence of several lines in parallel therefore advantageously makes it possible to reduce the risk of complete failure of the system 100 by having the possibility of cutting only the defective line.
- the fluidic treatment circuit 10 or each treatment line comprises an inlet valve 16 fluidly arranged between the FIL filtration unit and the microfiltration unit.
- the inlet valve 16 advantageously makes it possible to shut off the treatment line or the treatment fluid circuit 10 in the event of failure, leakage or jamming of the microfilters.
- the fluidic treatment circuit 10 or each treatment line comprises an outlet valve 16 fluidly arranged between the second tank 20 and the UFIL ultrafiltration unit.
- the processing fluid circuit 10 or each processing line may include a solenoid valve 15.
- the solenoid valve 16 thus allows the controlled shutdown of the processing fluid circuit 10 or of a processing line.
- the solenoid valve 15 is fluidly arranged between the microfiltration unit and the DI disinfection unit.
- the fluidic treatment circuit 10 or each treatment line comprises a non-return valve 13.
- the non-return valve 13 advantageously makes it possible to prevent the return of the treated water inside the ultrafiltration, in particular when stopping the. fluidic treatment circuit 10 by closing a valve.
- the second tank 20 for receiving treated water is intended to receive an outlet flow from the fluidic treatment circuit 10.
- the second tank 20 for receiving treated water is intended to be connected to a water network for its domestic use, for example for the evacuation of the toilets, watering and / or washing of exterior surfaces. Return circuits
- the system 100 comprises a first return fluidic circuit 21.
- the first return fluidic circuit 21 enables treated water to be transported from the outlet of the treatment fluidic circuit 10 or from the second tank 20 to to the first tank 30.
- This first return circuit 21 advantageously makes it possible to fill the first tank 30, in particular when the filling level of the first tank 30 is insufficient.
- the level of the first tank 30 must constantly approach the level of the weir 38 in order to eliminate the suspended matter in the first volume of water 1.
- the first return circuit 21 comprises a first 3-way valve V1.
- the first three-way valve V1 is fluidly arranged between the fluidic treatment circuit 10 and the second tank 20.
- the first 3-way valve V1 makes it possible to transport the flow coming from the fluidic treatment circuit 10 either towards the second tank 20, or towards the first return circuit 21 and therefore to the first tank 30.
- the first 3-way valve V1 is preferably an “all or nothing” 3-way valve.
- the first 3-way valve V1 is preferably a solenoid valve.
- the treatment system 100 comprises a second return circuit 22.
- the second return circuit 22 makes it possible to transport the treated water 2 from the second tank 20 to the inlet of the fluidic treatment circuit 10.
- the term “fluidic circuit inlet” is understood to mean between the pumping line and the FIL filtration unit.
- the second return circuit 22 comprises a second 3-way valve V2.
- the second three-way valve V2 is connected to the fluidic treatment circuit 10, preferably fluidly arranged between the pumping line and the FIL filtration unit.
- the second three-way valve V2 is also connected to the second return circuit 22.
- the second three-way valve V2 thus advantageously makes it possible to inject at the inlet of the fluidic treatment circuit 10 either liquid coming from the first tank 30 or coming from the second. tank 20.
- the second return circuit 22 advantageously makes it possible to reprocess a volume of water 2 coming from the second tank 20 if the quality of the water 2 from the second tank 20 is not sufficient.
- the second return circuit 22 allows also to dilute the volume of gray water at the inlet of the fluidic treatment circuit 10 to improve the quality of the treated water 2 from the second tank 20.
- the second return circuit 22 comprises a pump 24.
- the second return circuit 22 may include an opening valve 26.
- the opening valve 26 of the second return circuit is preferably a solenoid valve.
- the second return circuit 22 preferably comprises a non-return valve 25.
- the non-return valve 25 advantageously makes it possible to prevent the liquid from passing directly from the inlet of the treatment fluid circuit 10 to the second tank 20 when the pump 24 is not. activated.
- the second tank 20 can include an outlet 27 connected to the second return circuit 22.
- the second tank 20 can include a level sensor.
- the level sensor is a float similar to the float of the first tank 30. The level sensor is designed to detect when the level of the second tank 20 reaches the level of the output 27 connected to the second return circuit 22.
- the system 100 includes a feed circuit 23 for the UFIL ultrafiltration unit.
- the supply circuit 23 allows the transport of treated water 2 to the second inlet 47 of the second pipe 46 of the UFIL ultrafiltration unit.
- the supply circuit 23 extends from the second tank 20 to the second inlet 47 of the UFIL ultrafiltration unit.
- the supply circuit 23 comprises a third three-way valve V3 fluidly arranged on the second return circuit 22 between the pump 24 and the second three-way valve V2. This third three-way valve V3 is also connected to the supply circuit 23.
- Such a configuration advantageously makes it possible to use the same pump 24 for the supply circuit 23 and for the second return circuit 22.
- the system 100 includes pressure sensors Pt1, Pt2, Pt3, Mal, Ma2, Ma3.
- the Pt1, Pt2, Pt3, Mal, Ma2, Ma3 pressure sensors can include at least one Mal, Ma2, Ma3 pressure gauge and / or at least one Pt1, Pt2, Pt3 pressure switch.
- the term “pressure switch” is understood to mean a device making it possible to detect the exceeding of one or more predetermined values of the pressure of the fluid of the treatment fluid circuit 10.
- the pressure switch Pt1, Pt2, Pt3 is designed to generate information as a function of or predefined thresholds which have been reached by the pressure of the fluid.
- the information generated is preferably electrical information, but may alternatively include pneumatic, hydraulic or electronic information.
- manometer is meant in particular a means for measuring the fluidic pressure at a point of the fluidic treatment circuit 10.
- the manometer Mal, Ma2, Ma3 makes it possible to generate a value of the measured pressure.
- the manometer is designed to generate information based on the value of the fluid pressure.
- the pressure sensors make it possible to generate information relating to the pressure of the fluid at one or more points of the fluidic treatment circuit 10. As described below, this information can be transmitted to a control automaton for the control of the pumps and / or. solenoid valves of the treatment fluid circuit 10.
- the processing fluid circuit 10 comprises a first pressure sensor arranged to detect a pressure of the fluid of the flow rate Q.
- the fluid circuit includes a pressure sensor fluidly arranged between the pumping line (s) and the FIL filtration unit.
- the processing fluid circuit 10 can include a first pressure sensor upstream of the filter unit.
- the fluidic treatment circuit 10 preferably comprises a first pressure switch Pt1 and / or a first pressure gauge that is not fluidly between the pumping line (s) and the FIL filtration unit.
- the first pressure switch Pt1 and / or the first manometer Mal are fluidly arranged between the second three-way valve V2 and the filtration unit FIL.
- the fluidic treatment circuit 10 can also comprise a second pressure switch Pt2 fluidly arranged between the pumping line or lines and the second three-way valve V2 of the second return circuit 22.
- the fluidic treatment circuit 10 comprises a second manometer Ma2 fluidly arranged between the filtration unit FIL and the microfiltration unit. If the fluidic treatment circuit 10 comprises several treatment lines as described above, the fluidic circuit preferably comprises a second manometer Ma2 per treatment line.
- the fluidic treatment circuit 10 comprises a third pressure switch Pt3 and / or a third pressure gauge Ma3 fluidly arranged between the disinfection unit DI and the ultrafiltration unit UFIL.
- the pressure switches Pt1, Pt2, Pt3 advantageously make it possible to detect an increase or a decrease in pressure on the fluidic treatment circuit 10.
- the manometers Mal, Ma2, Ma3 advantageously make it possible to ensure visual monitoring and / or quantitative monitoring of the pressure. .
- the manometers Mal, Ma2, Ma3 also advantageously make it possible to take over in the event of a failure of the pressure switches.
- the system 100 comprises a control automaton COMP.
- the controller is configured to control the activation of at least one pump 12, 24 and / or at least one valve 14, 15, 26, V1, V2, V3 of the treatment system 100.
- the PLC is configured to receive pressure information from pressure sensors Pt1, Pt2, Pt3, Mal, Ma2, Ma3.
- the control automaton is preferably connected to at least one pressure switch and / or at least one pressure gauge.
- the control automaton is preferably configured to receive data from the level sensor 37 of the first tank 30.
- control machine is designed and configured to control the various solenoid valves and / or pumps and optionally the oxygenation unit, the means for delivering enzymes and the DI disinfection unit.
- the control automaton COMP is preferably configured to control the at least one pump 12 of the pumping line or lines.
- the COMP control automaton is configured to control at least one solenoid valve of the treatment fluidic circuit 10.
- the COMP control automaton can be configured to control at least one pump to supply the treatment fluidic circuit 10 and / or a pump of the treatment fluidic circuit. second return circuit.
- the controller is configured to control the solenoid valves of the processing fluid circuit 10 or of each processing line.
- the controller is configured to automatically close the solenoid valve 15 of the processing fluid circuit 10 as a function of the pressure information, in particular from the third pressure switch Pt3 and / or the third pressure gauge Ma3.
- the controller is configured to automatically close the solenoid valve 15 of the processing fluid circuit 10 as a function of the pressure information, in particular from the third pressure switch Pt3 and / or the third pressure gauge Ma3.
- the COMP control automaton then commands the closure of said processing line in response to a pressure crossing threshold measured at one of the pressure switches or manometers.
- the COMP control automaton can be configured to control the output solenoid valve (s) 14 of the pumping line (s), preferably according to the state of the number of open treatment lines and according to the filling level of the first one. tank.
- the COMP control automaton can cause the closure of a pumping line if a treatment line has been closed. This advantageously makes it possible to adapt the pressure in the fluidic treatment circuit 10 by modulating the number of open or closed pumping lines.
- the COMP controller is configured to control the running, stopping, or power of pumps 12 of the pumping lines.
- the COMP control automaton also makes it possible to control the first return circuit 21.
- the COMP control automaton is configured to control the opening of the first three-way valve V1 towards the return circuit according to the filling level of the first tank 30. For example, when the filling level of the first tank 30 is not sufficient to reach the weir, the float transmits the associated information to the control automaton. In response, the control automaton automatically activates the solenoid valve V1 so as to open the channel making it possible to transport the flow leaving the fluidic treatment circuit 10 to the first tank 30 through the first return circuit.
- control automaton COMP is configured to control the second return circuit 22, in particular by controlling the activation of the pump 24, of the inlet solenoid valve 26 and / or of the second three valve. V2 channels.
- the COMP control automaton controls the second return circuit 22 preferably according to information from the first pressure switch Pt1, the filling rate of the second tank 20, the filling rate of the first tank 30.
- the second return circuit 22 can also be controlled as a function of information on the quality of the treated water 2 in the second tank 20 and / or the quality of the gray water 1 in the tank.
- first tank 30 In one embodiment, the first tank 30 and / or the second tank 20 comprises sensors for measuring the quality of the water. The quality information can be transmitted to the COMP control machine. The COMP control automaton can determine the opening of the first circuit 21 and / or of the second return circuit 22 based on information on the quality of the water in the first tank 30 and / or the second tank 20.
- control automaton COMP can activate, automatically after a measurement, the second return circuit 22 by opening the inlet solenoid valve 26, the pump 24 and the three-way solenoid valve V2 for reinjecting the treated water 2 into the treatment fluid circuit.
- the activation of the second return circuit is automatically controlled by the COMP controller to dilute the gray water before the treatment fluid circuit.
- the COMP controller can also be used to control System 100 in other configurations.
- the COMP controller can be configured to activate cleaning steps for the FIL filter unit.
- the invention also relates to a domestic installation 400.
- the domestic installation 400 illustrated in FIG. 6 comprises a gray water outlet.
- the gray water evacuation is connected to the water evacuations such as a shower, bathtub, sink (in particular bathroom sink) and / or washing machine drain.
- the domestic installation further comprises a treatment system 100 according to the present invention.
- the domestic installation further includes a water supply.
- the water supply may include the supply of water to toilet flushes, sprinkler circuits, irrigation circuits or water supply to an external faucet, especially for use. automotive cleaning or exterior surfaces. Said water supply is fluidly connected to the second tank 20 of the treatment system 100.
- the invention also relates to a process for treating and / or recycling gray water illustrated in FIG. 4.
- the process comprises the following steps:
- ⁇ a treatment 210 of said flow rate Q in a volume of treated water 2 comprising:
- the method comprises a step of CLA_ clarification of said volume of gray water 1 by removing the materials in suspension in the first tank.
- the invention also relates to a method for automatically controlling a system such as the processing system according to the invention.
- the control method is preferably implemented by the control automaton COMP.
- the automatic control method comprises at least one measurement of the pressure of the flow rate Q in the fluidic treatment circuit 10.
- the method comprises at least one measurement of the degree of filling of the first tank 30.
- the method comprises reinjection of a volume of treated water 2 into the fluidic treatment circuit 10 or into the first tank 20.
- the reinjection is automatically controlled by the control automaton COMP as a function of the measurements. Q flow pressure and / or fill rate measurements.
- control automaton is deported.
- the control automaton can include a computer or a smart phone (called a "smartphone").
- the system then comprises means for transmitting information and / or control messages between the system and the control automaton.
- the invention also relates to a computer program product comprising computer program code instructions for implementing the control method according to the invention and a recording medium on which such a code is recorded.
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- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Engineering & Computer Science (AREA)
- Hydrology & Water Resources (AREA)
- Health & Medical Sciences (AREA)
- Molecular Biology (AREA)
- Biodiversity & Conservation Biology (AREA)
- Microbiology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
Description
Claims
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US17/763,523 US12312269B2 (en) | 2019-10-10 | 2020-10-09 | Grey water treatment and recycling system, grey water treatment and recycling process, system control method |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FRFR1911285 | 2019-10-10 | ||
| FR1911285A FR3101870B1 (fr) | 2019-10-10 | 2019-10-10 | Systeme de traitement et de recyclage des eaux grises, procede de traitement et de recyclage des eaux grises, procede de commande d’un systeme |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2021069644A1 true WO2021069644A1 (fr) | 2021-04-15 |
Family
ID=69699972
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2020/078379 Ceased WO2021069644A1 (fr) | 2019-10-10 | 2020-10-09 | Systeme de traitement et de recyclage des eaux grises, procede de traitement et de recyclage des eaux grises, procede de commande d'un systeme |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US12312269B2 (fr) |
| FR (1) | FR3101870B1 (fr) |
| WO (1) | WO2021069644A1 (fr) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114162939A (zh) * | 2021-10-26 | 2022-03-11 | 溢泰(南京)环保科技有限公司 | 一种edr净水器的换向系统 |
| CN114162937A (zh) * | 2021-10-26 | 2022-03-11 | 溢泰(南京)环保科技有限公司 | 一种edr净水器的换向系统 |
| DE102023206938A1 (de) * | 2023-07-21 | 2025-01-23 | Dehoust Gmbh | Verfahren und Vorrichtung zur Aufbereitung von Grauwasser zu Betriebswasser |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2694282A1 (fr) * | 1992-07-28 | 1994-02-04 | Pall Corp | Procédé de traitement d'eaux résiduaires contenant des matières particulaires, et appareil à y utiliser. |
| EP1151967A1 (fr) * | 1999-05-24 | 2001-11-07 | Shozo Nakamura | Procede et dispositif de traitement de materiau contamine contenant des huiles usees animales, vegetales ou analogues |
| US20030094412A1 (en) * | 2001-11-19 | 2003-05-22 | Jungbauer Michael J. | Septic system treatment process |
| US20100292844A1 (en) * | 2009-05-14 | 2010-11-18 | Omni Water Solutions Llc | Self-contained portable multi-mode water treatment system and methods |
| US20110036760A1 (en) * | 2008-03-19 | 2011-02-17 | Hbio Reto Xxi S.L. | Grey water regeneration system |
| EP2664584A1 (fr) * | 2012-05-16 | 2013-11-20 | Mgm (Sarl) | Dispositif de filtration des eaux grises domestiques |
| EP2703358A1 (fr) * | 2012-08-31 | 2014-03-05 | Veolia Water Solutions & Technologies Support | Dispositif de recyclage des eaux grises dans un véhicule de transport |
| CA2797686A1 (fr) * | 2012-11-28 | 2014-05-28 | Veos Group Inc | Systeme de recuperation d'eaux grises |
| US9868658B2 (en) * | 2010-04-14 | 2018-01-16 | Kenneth J. Kistner | Method for treating fluid waste material |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4765906A (en) * | 1985-03-12 | 1988-08-23 | Epoc Limited | Cross-flow filtration |
| US8133385B2 (en) | 2009-02-06 | 2012-03-13 | Culligan International Company | Grey water treatment system |
-
2019
- 2019-10-10 FR FR1911285A patent/FR3101870B1/fr active Active
-
2020
- 2020-10-09 WO PCT/EP2020/078379 patent/WO2021069644A1/fr not_active Ceased
- 2020-10-09 US US17/763,523 patent/US12312269B2/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2694282A1 (fr) * | 1992-07-28 | 1994-02-04 | Pall Corp | Procédé de traitement d'eaux résiduaires contenant des matières particulaires, et appareil à y utiliser. |
| EP1151967A1 (fr) * | 1999-05-24 | 2001-11-07 | Shozo Nakamura | Procede et dispositif de traitement de materiau contamine contenant des huiles usees animales, vegetales ou analogues |
| US20030094412A1 (en) * | 2001-11-19 | 2003-05-22 | Jungbauer Michael J. | Septic system treatment process |
| US20110036760A1 (en) * | 2008-03-19 | 2011-02-17 | Hbio Reto Xxi S.L. | Grey water regeneration system |
| US20100292844A1 (en) * | 2009-05-14 | 2010-11-18 | Omni Water Solutions Llc | Self-contained portable multi-mode water treatment system and methods |
| US9868658B2 (en) * | 2010-04-14 | 2018-01-16 | Kenneth J. Kistner | Method for treating fluid waste material |
| EP2664584A1 (fr) * | 2012-05-16 | 2013-11-20 | Mgm (Sarl) | Dispositif de filtration des eaux grises domestiques |
| EP2703358A1 (fr) * | 2012-08-31 | 2014-03-05 | Veolia Water Solutions & Technologies Support | Dispositif de recyclage des eaux grises dans un véhicule de transport |
| CA2797686A1 (fr) * | 2012-11-28 | 2014-05-28 | Veos Group Inc | Systeme de recuperation d'eaux grises |
Also Published As
| Publication number | Publication date |
|---|---|
| FR3101870B1 (fr) | 2021-10-01 |
| US20220363578A1 (en) | 2022-11-17 |
| FR3101870A1 (fr) | 2021-04-16 |
| US12312269B2 (en) | 2025-05-27 |
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