US20140059754A1 - Device for Recycling Grey Water in a Transportation Vehicle - Google Patents

Device for Recycling Grey Water in a Transportation Vehicle Download PDF

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Publication number
US20140059754A1
US20140059754A1 US14/014,505 US201314014505A US2014059754A1 US 20140059754 A1 US20140059754 A1 US 20140059754A1 US 201314014505 A US201314014505 A US 201314014505A US 2014059754 A1 US2014059754 A1 US 2014059754A1
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United States
Prior art keywords
water
grey water
toilet
pressure
tank
Prior art date
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Abandoned
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US14/014,505
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English (en)
Inventor
Sylvain HERMON
Pierre VIGNAL
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Veolia Water Solutions and Technologies Support SAS
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Veolia Water Solutions and Technologies Support SAS
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Assigned to VEOLIA WATER SOLUTIONS & TECHNOLOGIES SUPPORT reassignment VEOLIA WATER SOLUTIONS & TECHNOLOGIES SUPPORT ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: HERMON, SYLVAIN, VIGNAL, PIERRE
Publication of US20140059754A1 publication Critical patent/US20140059754A1/en
Abandoned legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03D—WATER-CLOSETS OR URINALS WITH FLUSHING DEVICES; FLUSHING VALVES THEREFOR
    • E03D5/00—Special constructions of flushing devices, e.g. closed flushing system
    • E03D5/003—Grey water flushing systems
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
    • B64D11/00—Passenger or crew accommodation; Flight-deck installations not otherwise provided for
    • B64D11/02—Toilet fittings
    • 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
    • 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
    • C02F2201/001—Build in apparatus for autonomous on board water supply and wastewater treatment (e.g. for aircrafts, cruiseships, oil drilling platforms, railway trains, space stations)
    • 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
    • C02F2209/001—Upstream control, i.e. monitoring for predictive control
    • 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]
    • 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
    • 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
    • C02F2209/40—Liquid flow rate
    • 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
    • C02F2303/00—Specific treatment goals
    • C02F2303/16—Regeneration of sorbents, filters
    • 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
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T50/00—Aeronautics or air transport
    • Y02T50/40—Weight reduction

Definitions

  • the field of the invention is that of the treatment of water in transportation vehicles, especially but not exclusively, in an aircraft.
  • the invention pertains to a technique for recycling grey water in a transportation vehicle of this kind.
  • potable water is stored in one or more tanks and is generally intended for pressurized supply to toilet flushes, wash-basins and galleys.
  • grey water refers to water with low pollutant content resulting from dishwashing, hand washing and showers.
  • the invention is aimed especially at overcoming these drawbacks of the prior art.
  • a device for recycling grey water in a transportation vehicle especially an aircraft (for example a commercial aircraft) intended for supplying water to the flush system of a toilet and meeting the constraints dictated by air transport, namely:
  • a device for recycling grey water particularly for a transportation vehicle equipped with a tank of clean on-board water, said device being intended for providing recycled water for the emptying of at least one toilet mounted in said vehicle, said device comprising a vessel for collecting grey water, a pump to make at least at a part of the grey water stored in the vessel circulate towards filtering means and a tank for storing filtered grey water useable for washing the toilets, said filtered grey water being stored under pressure in said tank.
  • said filtering means comprise an ultrafilter.
  • the invention relies on a wholly original approach to the recycling of grey water in a transportation vehicle, and especially in an aircraft, that uses the water flowing from a wash-basin (hand-sink) or a shower of the aircraft as toilet-flushing water.
  • the retrieved water is filtered by an ultrafilter and stored under pressure, and not under atmospheric pressure, in a cylinder.
  • the ultrafilter makes it possible especially to eliminate the organic matter, bacteria and colors from the grey water which is intended, once filtered, for the flushing of toilet bowls.
  • said filtered grey water is stored in said tank at a pressure of 2 to 4 bars.
  • the grey water filtered by the ultrafilter is stored under pressure in a cylinder at a pressure of 3.5 bars for example, and not under atmospheric pressure.
  • This technique is advantageous in that the pressurizing of the flushing water upstream to the toilet bowl does not require the use of a pump to draw out the filtered water and direct it towards the toilet bowl. A pump of this kind would however be necessary if the filtered grey water were to be stored in the cylinder at atmospheric pressure.
  • the device of the invention is economical, light and compact.
  • the invention provides a structural solution that is simple, silent and minimizes the volume of storage of the potable water and the wastewater (and therefore reduces the weight carried during the flight of the aircraft) and meets safety requirements, especially in the field of air transport.
  • the recycling device comprises a valve to selectively connect said toilet to the filtered grey-water storage tank or to said on-board clean-water tank.
  • a device of this kind can be deactivated and bypassed in the event of problems.
  • the toilet remains functional even in the event of malfunctioning of the recycling device, the flushing water for the toilet bowl being provided by the on-board potable water system (it is therefore possible to have an operation without recycling of the grey water of the aircraft water system).
  • the recycling device comprises a non-return clack valve between said on-board clean water tank and said valve.
  • the device of the invention is provided with an anti-return safety device preventing a return towards the potable water system of the vehicle and is therefore independent of the on-board potable water system of the vehicle.
  • a clack valve of this kind is aimed at preventing the circulation of filtered grey water towards the on-board clean water tank.
  • the recycling device comprises a back-pressure valve between said valve and the grey-water collecting vessel.
  • a back-pressure valve of this kind is aimed at maintaining stable pressure in the filtered water tank and therefore at improving the precision of the dosing of filtered grey water that can be used for washing toilets and also for securing the filtered grey water circuit in preventing any excess pressure in the circuit.
  • said recycling device comprises pressure sensors placed respectively upstream and downstream relative to the filtering means so as to determine the difference in pressure between the inlet and the outlet of the filtering means.
  • This difference in pressure is used to indicate any clogging, even a partial clogging, of the grey-water filter which could harm the quality of the toilet-flushing water.
  • said recycling device comprises a sensor of the level of filling of the grey-water collector vessel.
  • the output signal of such a sensor can be used to determine the quantity of water available to flush out the toilets and anticipate a possible lack of recycled water, which would make it necessary to bypass the recycling circuit to flush out the toilets with on-board clean water.
  • said recycling device is connected to electronic control and command means.
  • These electronic control and command means of the device of the invention take the form of a microcontroller for example which receives the data measured by the different sensors of the device and delivers the command signals for the device.
  • said electronic control and command means comprise means to command the starting or stopping of said recycling device.
  • said electronic control and command means include means commanding the backwashing of the filtering means with filtered grey water stored in said tank.
  • the backwashing of the filtering means with filtered grey water stored in the tank is advantageous in that it does not require the use of chemicals.
  • said electronic control and command means take account of at least one of the following criteria:
  • the backwashing can be clock-activated (i.e. activated at predetermined time intervals) or else when a clogging of the grey water filter is detected through output signals from the pressure sensors situated upstream and downstream from the filter (and/or from flow-rate signals).
  • It can also be triggered according to a duration of operation of the filter and/or a predetermined loss of load and/or a volume of water filtered by the filter.
  • said electronic control and command means include means that command the emptying of said recycling device and implement said pump.
  • the device of the invention is entirely and automatically drainable. Such a maintenance operation is relatively easy.
  • said electronic control and command means include means activating the draining of the matter in suspension from the grey water retained by the filtering means.
  • Such a draining of matter in suspension can be implemented when a backwashing of the grey-water filter is in progress or else is terminated.
  • said recycling means include means of reversible fastening to a toilet module comprising a wash-basin and a toilet.
  • it comprises means for linking the grey-water collecting vessel to a wash-basin or to a shower mounted in said vehicle.
  • the device of the invention is decentralized and installed for each toilet module of an aircraft for example, in the passenger space. It is advantageous in that it takes up no volume in the hold of the aircraft.
  • Toilets equipped with said device offer an efficient compromise between passenger comfort and operational cost for airlines.
  • FIG. 1 is a schematic representation of the device for recycling grey water according to the invention according to one embodiment.
  • each toilet module of the aircraft has a wash-basin or hand-sink A, the tap of which is connected by a pipe L 6 to a tank D of on-board potable water, and a toilet bowl B which is connected to a tub for storing wastewater (not shown).
  • Each fitting furthermore comprises a recycling device or unit C to filter grey water flowing from the wash-basin A and supplying the flush system of the toilet B with this filtered water.
  • the recycling unit C is in this case decentralized.
  • each module of the toilets of an aircraft is fitted out with a dedicated recycling unit.
  • decentralized recycling unit C minimizes the number of pipes, and therefore the weight, necessarily implemented in a centralized device to connect this device to the different monuments of the aircraft. This aspect is important since, as emphasized here above, the space used for the passage of the pipes in the plane is extremely constricted.
  • the recycling unit C implemented in each toilet module of the aircraft is thus placed between the wash-basin A and the toilet bowl B. It comprises a vessel 2 for receiving grey water, a pump 4 to make the grey water of the vessel 2 flow towards a grey-water ultrafiltration module 8 and an expansion vessel 12 for pressurizing the grey water filtered by the ultrafiltration module 8 .
  • the vessel or reservoir 2 has a capacity of about four liters in this example, and enables the storage of grey water flowing from the wash-basin B through the conduit L 1 .
  • the wash-basin A is supplied with clean water from the tank D of on-board water by means of the conduit L 6 .
  • the vessel 2 is provided with a filling-level sensor 3 , the output signal of which is sent to a microcontroller of a control and command device, or central processing unit E, thus making it possible to have an indication of the level of filling of the vessel 2 .
  • a three-way valve 1 is provided. This three-way valve 1 is placed between the wash-basin A and the vessel 2 , and is designed to make the grey water coming from the wash-basin A circulate either towards the vessel 2 or towards a removal device or drainmast when the vessel 2 is full or when the recycling unit C is deactivated.
  • the valve 1 is, like the other valves of the recycling unit C, a solenoid valve in this example.
  • the pump 4 which, in this example, is a self-priming pump provided with a pressure switch and designed to obtain the circulation of at least one part of the grey water which is stored in the vessel 2 towards the ultrafiltration module 8 through the conduit L 2 .
  • a non-return clack valve 5 and a flowmeter 6 used to measure the flow rate of the water circulating in the conduit L 2 (and therefore the flow rate of the pump 4 ).
  • the ultrafiltration module 8 has a filtering chamber (not shown) comprising a semi-permeable membrane which separates the internal volume of the ultrafiltration chamber into two compartments: the compartment that receives the grey water to be filtered and the compartment that receives the filtered water.
  • the filter or filtering membrane (not shown in FIG. 1 ) implemented in the ultrafiltration module 8 enables an optimized reduction of the matter in suspension in the grey water coming from the vessel 2 as well as partial but sufficient reduction of the color and organic matter in this grey water (and therefore a reduction of olfactory nuisance).
  • the liquid filtered by the ultrafiltration module 8 and coming out of this module 8 through the conduit L 3 is herein called a filtrate and the matter blocked by the ultrafiltration module 8 is called concentrate.
  • the ultrafiltration module 8 enables the filtering of 120 liters per hour of grey water under pressure of 1.3 bars or 19 psi (pound per square inch). It is connected to a first valve 10 with two channels for emptying the ultrafiltration module 8 , such a emptying being implemented when the aircraft is at a halt for example.
  • the valve 10 is connected to a conduit L 8 which itself is connected to the drainmast.
  • the ultrafiltration module 8 is furthermore connected to a second valve 11 with two channels for discharging concentrates resulting from the ultrafiltration towards the drainmast.
  • the valve 11 is connected to a conduit L 8 which itself is connected to the drainmast.
  • the ultrafiltration module 8 is connected to two pressure sensors 7 and 9 respectively situated upstream and downstream with respect to the ultrafiltration module 8 on the conduits L 2 and L 3 respectively.
  • the sensors 7 and 9 which are electronic sensors of a known type, are used to determine the difference in pressure between the inlet and outlet of the ultrafiltration module 8 and thus detect any possible clogging of the filter of the ultrafiltration module 8 .
  • the ultrafiltration module 8 If the ultrafiltration module 8 be clogged (in this example, the transmembrane pressure measured by the two pressure sensors 7 and 9 is greater than 1 bar for example), an alarm (not shown) gets activated. In this case, the toilet returns to operation without recycling and remains functional.
  • pressure sensors 7 and 9 makes it possible not only to track the progress of the transmembrane pressures of the ultrafiltration module 8 and anticipate the clogging of the filter but also to fine tune the volume of water to be taken aboard before each take-off by the aircraft. This therefore optimizes the weight taken on board the aircraft.
  • the recycling unit 6 implements an expansion vessel 12 comprising means for the pressurizing (in this example, with a pressure of 45 psi or 3.1 bars) of a predetermined volume of filtered water (or filtrate) by the ultrafiltration module 8 .
  • the filtered grey water is stored in the expansion vessel 12 at a pressure of 2 to 4 bars, for example at a pressure 2, 5 to 4 bars, or 3 to 4 bars in another example
  • the filtered water stored in the expansion vessel 12 is intended for flushing the bowl of the toilets B via the conduit L 4 .
  • the volume of water stored under pressure in the expansion vessel 12 is for example 600 milliliters, a volume equivalent to about three toilet flushings.
  • the expansion vessel 12 thus constitutes a reservoir of flushing water sized so as to be able to store several volumes of flushing water which can be supplied to the toilets successively without the pump 4 being primed.
  • the cleaning of the vessel is for example activated by the user by means of a handle or button.
  • the flushing water is delivered into the vessel by any type of device known to those skilled in the art.
  • the storage of the filtrate under pressure in the expansion vessel 12 prevents the use of a storage tank for the filtrate at atmospheric pressure and the use of a pump for sending the filtrate thus stored towards the toilets.
  • the solution of the invention thus restricts the number of elements needed for recycling grey water and therefore the weight and cost of the recycling device C. It also reduces maintenance operations.
  • the expansion vessel 12 provides the toilet B with filtrate by means of a three-way valve 13 which selectively connects the toilet B to the expansion vessel 12 or the on-board water tank D.
  • this valve 13 is capable of supplying the toilet B with clean water, stored in the on-board water tank D, via the conduit L 7 when the recycling device C is malfunctioning for example.
  • the recycling unit C implements a non-return clack valve 15 between the on-board water tank D and the expansion vessel 12 aimed at preventing the return of water filtered by the ultrafiltration module 8 towards the on-board water tank D via the conduit L 7 and therefore preventing the contamination of the potable water taken on board the aircraft.
  • the recycling unit C implements a back-pressure valve 14 placed on the conduit L 5 between the expansion vessel 12 and the grey-water storage tank 2 .
  • This valve 14 regularizes the flow rate of the valve 13 , i.e. it seeks to improve the precision of dosing of filtered grey water which can be used for washing the toilets and securing the filtrate circuit in preventing any excess pressure in the circuit of the recycling unit C.
  • the valve 14 is calibrated and adjusted to a value of 50 psi in this example.
  • the recycling unit C is connected to a control and command device E, or overall supervision unit, which takes the form of an electronic controller capable of executing a software application, or computer program for processing signals to measure and command the recycling unit C according to the measurement signals.
  • An electronic controller E of this kind thus receives data measured by the level sensor 3 , the flowmeter 6 and the pressure sensors 7 and 9 in particular, and is capable of activating the transmembrane high-pressure alarm mentioned here above.
  • This electronic controller E is furthermore capable of delivering command signals to the valves 1 , 10 , 11 , 13 and 14 .
  • All the information on the working of the recycling unit C and especially the flow of water to be processed, the level of the tank 2 , the pressure in the conduits and the difference of pressure can be stored in an electronic storage memory of the electronic circuit E (and/or in chips for example, the memory of which is read when the aircraft is on the ground) for example. This information is available in real time in order to enable easier maintenance when the aircraft has landed and is on the ground.
  • the clock, alarm and command signals of the recycling unit C are managed by the electronic controller E which furthermore makes it possible to supervise the state of the system.
  • the recycling unit C is active.
  • the wastewater from the basin A flows by gravity into the reception vessel 2 .
  • the pump 4 then sends wastewater under pressure from the vessel 2 to the ultrafiltration module 8 .
  • the filtrate is then stored in the expansion vessel 12 until the next flushing while the concentrate, held by the ultrafiltration module 8 , is discharged by means of the discharge valve 11 towards the drainmast by the conduit L 8 .
  • a part of the filtrate (about 200 milliliters) stored in the expansion vessel 12 is sent, by pressure contained in the expansion vessel 12 , to a toilet B by means of the valve 13 so as to flush the bowl.
  • the back-pressure valve 14 then plays its role of regulating the flow rate of the water sent into the toilet B and of keeping the pressure in the circuit of the recycling unit C.
  • the expansion vessel 12 is connected to the ultrafiltrate circuit under pressure and gets filled when the pressure rises in the circuit. Once the pressure reaches the calibrated back-pressure value of the valve 14 , it opens to discharge the filtered water into the vessel 2 for collecting grey water. The pressure of the ultrafiltrate circuit then falls back and the back-pressure valve 14 closes and so on and so forth.
  • valve 13 opens and recycled water is sent to the toilet B.
  • the pressure of the ultrafiltrate circuit would fall very quickly if there had been no expansion vessel 12 .
  • the expansion vessel 12 makes it possible to maintain the pressure in a system (in this case that of the ultrafiltrate) even if it loses water (within certain limits naturally).
  • the expansion vessel 12 is herein constituted by a flexible pouch (made of rubber) into which the water enters. This flexible pouch is surrounded by gas (nitrogen for example) at a determined pressure. When the pouch is emptied, the gas keeps the residual liquid at the initial pressure.
  • gas nitrogen for example
  • the wastewater stored in the vessel 2 is thus processed in batches and the concentrate retained by the ultrafiltration module 8 is sent out to drainage either upon a clock signal or upon a transmembrane high-pressure signal.
  • the emptying of the recycling unit C is activated upon a landing signal or a aircraft door-opening signal given by the aircraft electrical system to the electronic controller E of the recycling unit C.
  • the emptying of the unit C is activated.
  • the pump 4 is activated (in operation) and the drainmast is opened.
  • the access to the reservoir or vessel 2 is prevented by the valve 1 , i.e. the wastewater flowing from the wash-basin A is directed directly to the drainmast via the conduit L 9 .
  • the drain valve 10 is open by default, which means that the recycling unit C can finish getting drained even when the electrical supply of the aircraft is cut off (when it is put in the hangar).
  • the backwashing mode consists in backwashing a filter in order to remove the particles that have accumulated therein and in order to prevent the filter from getting clogged.
  • backwashing is applied to the filter of the ultrafiltration module 8 and makes it possible to avoid a chemical washing of this filter.
  • Backwashing can, for example, be triggered upon an alarm indicating transmembrane high pressure of the filter measured by the pressure sensors 7 and 9 or/or be triggered upon a clock signal.
  • the backwashing is done by sending filtered water (stored in the expansion vessel 12 ) in a counter-flow into the ultrafiltration module 8 and then draining it by means of the drain valve 10 which is open.
  • the concentrates are therefore emptied into the drainmast by the conduit L 8 . It is then possible to go back to the production mode described here above.
  • the recycling unit E can be used in the backwash mode to try and restore appropriate pressure to the ultrafiltration module 8 . If this operation is unsuccessful, then it is necessary to wait for the aircraft to land and for a maintenance operation to be performed by an operator.
  • the recycling unit C can be deactivated and bypassed in order to return to a classic functioning of the toilet B, the flush system of which is then supplied with water by the on-board water tank D via the conduit L 7 .
  • the wastewater from the wash-basin A flows directly into the drainmast via the conduit L 9 and the flushing of the bowl of the toilet B is then done by the on-board potable water system (the toilet B thus remains functional).
  • the recycling unit C is relatively light. Its weight does not exceed 6 kg, the supporting elements included. It is preferably made out of plastic.
  • the casing of the ultrafiltration module is thin and light.
  • the recycling unit C is placed under the wash-basin A of the toilet module and is therefore easily accessible.
  • the recycling unit C is fixed reversibly to the toilet module by winged screws or the like, thus enabling easy and fast dismantling by hand.
  • hydraulic connection systems can be mounted and dismantled by hand.
  • the general shape of the recycling unit C is dedicated to the toilet module.
  • the elements are specifically molded to adapt to the geometrical constraints of the toilet module.
  • the maintenance of the recycling system C is facilitated.
  • the ultrafiltration module 8 is easily replaceable.
  • the recycling unit C can easily be replaced, without any tools, within approximately 15 minutes. These actions are then done during the maintenance phases when the aircraft is on the ground.
  • the device of the invention is aimed at recycling grey water from a transportation vehicle to use it as a cleaning/flushing fluid for cleaning and flushing a toilet bowl or even several toilet bowls.
  • the device is also adapted to recycling grey water from a shower towards the toilets of a transportation vehicle.

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  • Engineering & Computer Science (AREA)
  • Water Supply & Treatment (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Chemical & Material Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)
  • Vehicle Waterproofing, Decoration, And Sanitation Devices (AREA)
  • Sanitary Device For Flush Toilet (AREA)
US14/014,505 2012-08-31 2013-08-30 Device for Recycling Grey Water in a Transportation Vehicle Abandoned US20140059754A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1258168A FR2994965B1 (fr) 2012-08-31 2012-08-31 Dispositif de recyclage des eaux grises dans un vehicule de transport
FR1258168 2012-08-31

Publications (1)

Publication Number Publication Date
US20140059754A1 true US20140059754A1 (en) 2014-03-06

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US (1) US20140059754A1 (fr)
EP (1) EP2703358A1 (fr)
FR (1) FR2994965B1 (fr)

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US20130167293A1 (en) * 2010-07-16 2013-07-04 Masayuki Nakaya Temporary toilet
US20140021112A1 (en) * 2012-07-18 2014-01-23 Mag Aerospace Industries, Inc. Systems and Methods for Treating Grey Water On-Board Passenger Transport Vehicles
WO2015191381A1 (fr) * 2014-06-12 2015-12-17 Mag Aerospace Industries, Llc Accumulateur pour la gestion de l'eau
GB2547922A (en) * 2016-03-03 2017-09-06 Avon Water Systems Ltd Improvements in or relating to filtering apparatus
US20180010321A1 (en) * 2014-08-04 2018-01-11 Houjie SUN, Sr. A saving water tank of closestool
CN108517925A (zh) * 2018-05-31 2018-09-11 吴春生 一种循环用水节水装置
US20180291595A1 (en) * 2017-04-07 2018-10-11 Airbus Operations Gmbh Aircraft comprising a high-pressure water supply and distribution system
CN108892281A (zh) * 2018-08-15 2018-11-27 山东轶骋真空科技有限公司 一种轨道客车用灰水回收系统

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CN204055803U (zh) * 2014-06-10 2014-12-31 浙江金字机械电器有限公司 特种真空集便排污处理系统
CN104386884B (zh) * 2014-12-02 2016-03-16 山东华腾环保科技有限公司 一种列车卫生间污水的处理装置及方法
FR3062144A1 (fr) * 2017-01-25 2018-07-27 Gerard Roger Manon Procede mecanique actionne par un fluide sous pression tel un reseau d'eau potable entrainant une turbine qui a actionne un compresseur d'air. procede pouvant dans certains cas etre un moteur electrique
CN106672004B (zh) * 2017-03-09 2018-08-31 山东洁畅真空技术有限公司 一种铁路客车灰水回收利用系统
FR3101870B1 (fr) * 2019-10-10 2021-10-01 Dfm Depannages Fournitures Maintenance Systeme de traitement et de recyclage des eaux grises, procede de traitement et de recyclage des eaux grises, procede de commande d’un systeme
EP4171788A1 (fr) 2020-06-26 2023-05-03 Fgwrs Dispositif compact de filtration d'eau
FR3111825B1 (fr) 2020-06-26 2022-08-19 Fgwrs Dispositif compact de filtration d‘eau
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FR2994965B1 (fr) 2015-03-27
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