WO1994005866A1 - Apparatus and method for waste water recycling - Google Patents

Apparatus and method for waste water recycling Download PDF

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Publication number
WO1994005866A1
WO1994005866A1 PCT/AU1993/000450 AU9300450W WO9405866A1 WO 1994005866 A1 WO1994005866 A1 WO 1994005866A1 AU 9300450 W AU9300450 W AU 9300450W WO 9405866 A1 WO9405866 A1 WO 9405866A1
Authority
WO
WIPO (PCT)
Prior art keywords
water
holding tank
tank assembly
waste
overflow
Prior art date
Application number
PCT/AU1993/000450
Other languages
French (fr)
Inventor
Ronald Edward Bishop
Barrie Eric Dodd
Alan Charles Parry
Original Assignee
Hydrosave Recycling Systems Pty Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to AUPL4490 priority Critical
Priority to AUPL449092 priority
Application filed by Hydrosave Recycling Systems Pty Ltd filed Critical Hydrosave Recycling Systems Pty Ltd
Priority claimed from AU49354/93A external-priority patent/AU4935493A/en
Publication of WO1994005866A1 publication Critical patent/WO1994005866A1/en

Links

Classifications

    • EFIXED CONSTRUCTIONS
    • E03WATER SUPPLY; SEWERAGE
    • E03BINSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
    • E03B1/00Methods or layout of installations for water supply
    • E03B1/04Methods or layout of installations for water supply for domestic or like local supply
    • EFIXED CONSTRUCTIONS
    • E03WATER SUPPLY; SEWERAGE
    • E03BINSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
    • E03B1/00Methods or layout of installations for water supply
    • E03B1/04Methods or layout of installations for water supply for domestic or like local supply
    • E03B1/041Greywater supply systems
    • E03B2001/045Greywater supply systems using household water
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A20/00Water conservation; Efficient water supply; Efficient water use
    • Y02A20/30Relating to industrial water supply, e.g. used for cooling
    • Y02A20/302Use of lower-grade water
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A20/00Water conservation; Efficient water supply; Efficient water use
    • Y02A20/30Relating to industrial water supply, e.g. used for cooling
    • Y02A20/304Recirculation

Abstract

A method of recycling waste water including collecting and storing grey water in a holding tank assembly (11), providing a make-up water supply (18) to the holding tank assembly (11) for maintaining the water level therein between desired levels delivering water from the holding tank assembly to a water flush toilet (17) for flushing the toilet. Preferably, the method further includes providing the water flush toilet with a flushing cistern (17), providing the holding tank assembly with an overflow to waste (12) selecting the desired levels as a lower level sufficient to refill the cistern and an upper level below the overflow to waste, and causing the make-up water to enter the tank from an inlet disposed above the overflow to waste, with the holding tank assembly positioned for gravitational feed of grey water thereto. Preferably a pump assembly (13) is provided for pumping water from the holding tank assembly to the cistern. Additionally, the grey water supply to the holding tank assembly may be treated prior to entry to the holding tank assembly such as by filtration (14) and/or chemical treatment.

Description

"APPARATUS AND METHOD FOR WASTE WATER RECYCLING"

This invention relates to apparatus and method for waste water recycling.

This invention has particular but not exclusive application to the recycling of waste water in domestic situations and for illustrative purposes reference will be made to such application. However, it is to be understood that this invention could be used in other applications such as in industrial and commercial situations. Household waste water may be conveniently divided into two categories. Waste water from hand basins, baths, showers and the laundry and such like is frequently termed grey water because such waste water does not carry a high level of contaminants. Although such water is not potable, it may be reused for certain applications such as spray irrigation, flush water for water closet cisterns and such like.

The other type of waste water is conveniently termed black water and contains a relatively high level of contaminants and thus, in the absence of treatment, is not suitable for reuse.

Fresh water for drinking and washing is of premium importance and in some areas is becoming a scarce commodity. Additionally, the cost of disposal of waste water is increasing with demands for treatment of the waste water so that the environment is not polluted.

The present invention aims to provide an apparatus and/or method for waste water recycling which will be reliable and efficient in use. With the foregoing in view, this invention in one aspect resides broadly in a method of recycling waste water including:- collecting and storing grey water in a holding tank assembly; providing a make-up water supply to said holding tank assembly for maintaining the water level therein between desired levels; delivering water from the holding tank assembly to a water flush toilet for flushing the toilet. Preferably, the water flush toilet is provided with a flushing cistern, the holding tank assembly is provided with an overflow to waste, and the method includes selecting the desired levels as a lower level sufficient to refill the cistern and an upper level below the overflow to waste, and the make-up water to enters the tank from an inlet disposed above the overflow to waste. In an alternative form, the holding tank assembly is provided with a level operated diverter apparatus to divert incoming grey water to waste if the upper level of the water in the tank is achieved.

The holding tank assembly may be provided with a pump to deliver the grey water to the holding tank assembly for gravity discharge into the cisterns. Preferably, however, the method includes positioning the holding tank assembly for gravitational feed of grey water thereto and providing a pump assembly for pumping water from the holding tank assembly to the cistern.

The method preferably further includes providing treatment in the grey water supply to the holding tank assembly and treating the grey water prior to entry to the holding tank assembly such as by filtration or chemical treatment or a combination of same. The water held in the holding tank may be further treated by addition of chemical treatment agents, recirculated filtration, ultraviolet irradiation or such like.

In another aspect, this invention resides broadly in waste water recycling apparatus including:- a holding tank assembly for holding grey water; delivery means for delivering water held in the holding tank assembly to a cistern for a water closet; inlet means for receiving grey water to be held in the holding tank assembly; overflow discharge means for discharging overflow of water received into the holding tank assembly to waste, and a make-up water supply to said holding tank assembly for maintaining the water level therein between desired levels. The holding tank preferably includes a single tank assembly, but my if desired include a plurality of auxiliary tanks and the discharge means of one auxiliary tank may be selectively coupled to the make-up water supply of a further auxiliary tank, or be coupled to a sewerage system or septic tank system as required.

The waste water may be received from the kitchen and other household waste streams which may be designated as providing grey water, but preferably, water receivable into the holding tank assembly is received from the bathrooms and/or laundry of a household and the end use is a cistern of a water flush toilet. Alternatively, or in addition to he above, the end use may also be for irrigation or such like.

The apparatus preferably further includes grey water reticulation means connectible to the tank inlet means through which water to be recycled may be directed and may further include exit filtration means for filtering the water being pumped from the holding tank assembly.

In another aspect, this invention resides broadly in a building having a waste water recycling apparatus including:- a holding tank assembly for holding grey water; delivery means for delivering water held in the holding tank assembly to a cistern for a water closet; inlet means for receiving grey water to be held in the holding tank assembly; overflow discharge means for discharging overflow of water received into the holding tank assembly to waste, and a make-up water supply to said holding tank assembly for maintaining the water level therein between desired levels. The building may further include provision for transport of recycled water from the holding tank assembly associated with the building to one or a plurality of other holding tank assemblies associated with other buildings, or may further include a common holding tank assembly for several buildings, or a plurality of holding tank assemblies for one or a plurality of buildings. In a preferred embodiment, the holding tank is adapted to receive grey water from a reticulation system which feeds the holding tank via gravity and recycled water is pumped from the holding tank to be delivered to the cisterns as required. In a further preferred embodiment, recycled water is filtered as it enters and leaves the holding tank through the inlet means and the outlet means respectively. The overflow discharge preferably is directed towards the sewerage system, but may also be directed towards a septic tank or such like. The makeup water is preferably received from the mains water supply.

The holding tank may be located within the building or operatively associated therewith. Moreover, there may be provision for transport of recycled water from one holding tank associated with one building to other holding tanks associated with other buildings, or a common holding tank for several buildings, or a plurality of holding tanks. Recycled water may be tested for quality, and rejected to the overflow discharge if not satisfying a quality standard. It will be appreciated that the apparatus may be provided for a building where the toilet facilities and bathroom facilities are in close proximity, if not in the same room, as is often provided in order to minimise the cost of providing plumbing and drainage services. Accordingly, in buildings where there is more than one toilet facility, a number of water recycling apparatus may be provided independently from one another, or, if convenient or necessary by varying water throughput, may be interconnected.

The capacity of the holding tank assembly is sufficient for the desired end use of the recycled water. For example, a 400 litre tank will provide enough water for approximately 36 flushes of a normal toilet flushing 11 litres per flush. It is estimated that the average person requires approximately 6 flushes per day. In a preferred embodiment, the holding tank assembly is constructed from fibre reinforced plastics and includes a tank body 810 mm square section in plan with rounded corners and 750 mm in height, a lid domed to a height of 210 mm with one side removed to form a recess for receiving mechanical components, and a cover to enclose and protect the components. The tank, lid and cover are finished in gelcoat similar to a marine finish and the internal surface of the tank is coated with a gelcoat suitably impervious to water and the other chemical constituents carried therein. The pump os a diaphragm type multi-valve, multi-chamber pump, and is self-priming. The pump motor operates on a 12 volts DC power supply, and is of the type having an integrated permanent magnet, thermally protected, and the assembly being of the type which may run dry without damage. An automatic pressure switch and built-in check valve retains a preset pressure in the lines feeding the cistern or cisterns. THe pump diaphragm is constructed of an elastomer marketed under the trade mark SANTOPRENE and the body of the pump is constructed of polypropylene. The valves are of an elastomer marketed under the trade mark VITON.

The delivery side of the pump to the cistern or cisterns is of 13 mm nominal bore butylene tubing secured to fittings with ratchet and pawl type hose clamps marketed under the trade mark OCTIKER. THe delivery side further includes a 13 mm nominal bore brass spring action check valve, brass nipples and joint fittings and garden hose connectors. The pump pick-up line is also 13 mm nominal bore butylene tubing. Control of the supplementary water supply is by a float valve with the float and float arm removed from the valve and attached to a pivot point 100 mm from the bottom of the tank body, the float arm being operatively connected to the float valve, thus providing for a preset minimum water level in the tank body.

The incoming filter includes a plastics housing with a stainless steel filter element of approximately 25/30 mesh. The filter is of the type which remains dry unless water is flowing therethrough, and the housing further incorporates a chemical cartridge for holding for slow release into the water flowing therethrough a sanitizer, perfume and/or colour. The housing includes a lid for maintenance of the filter element and replenishing of the chemical cartridge. i'he power supply to the pump is preferably incorporated with an uninterruptible power supply from a rechargeable battery, and includes a visual indication of operation in emergency power supply mode.

The overflow in the tank body is provided at a level which provides an air separation between the highest water level in the tank and the distal end of the make-up water supply. The air separation is 100 mm.

In order that this invention may be more readily understood and put into practical effect, reference will now be made to the following drawing which illustrates a preferred embodiment of the invention, wherein:-

FIG. 1 is a cut away view of a typical installation of a waste water recycling system;

FIG. 2 is an exploded view of a holding tank assembly for the waste water recycling system of FIG. 1, and FIG. 3 is a diagrammatic representation of another waste water recycling system.

Referring to FIGS. 1, 2 and 3, a waste water recycling system 10 includes a holding tank 11 for holding waste water received from a waste water reticulation system 12 which reticulates water to the holding tank 11 by gravity, and delivering recycled water through a delivery system 16. The recycled water is filtered upon entering the holding tank 11 through a filter 14 and, in the embodiment shown in FIG. 3, upon exiting the holding tank 11 through a filter 15. The delivery system 16 is supplied by a pump 13 in line between the delivery system 16 and the holding tank 11. The delivery system 16 delivers recycled water to one or more water closet cisterns 17 and receives grey water from a bathroom 22, a laundry 23 and an ensuite 27.

When water required by the cistern 17 is in excess of that provided through the reticulation system 12, makeup water is provided through a makeup water line 18. Waste water in excess of that required by the cistern 17 is delivered through an overflow line 19.

Referring to FIG. 2, the holding tank 11 includes a tank body 24 and a tank lid 26. The tank lid 26 has the pump 13 mounted on a pump mounting platform, and the pump is covered by a pump cover 28. The feed to the pump 13 is taken from the bottom region of the holding tank 11 by a suction tube 25, and a make-up water valve 29 is controlled by a float 30 connected to the make-up water valve 29 by a connecting rod 31.

The pump is connected to a power supply 31 and pumps to the delivery system 16. If there is no water for pumping from the holding tank 11, as sensed by a low flow detector, an emergency water supply 32 cuts in to provide a water supply directly to the cistern or cisterns 17 through the delivery system 16. In the embodiment shown in FIG. 3, the holding tank 11 is also provided with a sump drainage line 20 to provide for the cleaning of the holding tank 11 when required.

The filter 14 is adapted to receive a slow release chlorine dispensing tablet, such as is frequently used in swimming pools. Accordingly, the filter 14 includes a releasable filter lid 21 and a tablet cradle or basket for receiving the chlorine tablet.

In use, a waste water recycling apparatus of this invention may be installed into a new house during construction, in into an existing house after construction has been completed. The holding tank is situated beneath the floor level of the living areas, in particular, below the level of any waste piping, so that the holding tank may receive waste water passing therethrough.

Grey water is reticulated by gravity irto the holding tank from the shower, handbasin, bath and laundry. The holding tank receives and hold any water reticulated thereto and the pump pumps suu water to the cistern of the toilet or toilets as required. A hair and lint filter on the inlet to the holding tank traps unwanted debris and should be cleaned and/or replaced regularly. Additionally, the inlet filter is provided with a chlorine tablet dispensing basket, and the chlorine released slowly into the waste water passing through the inlet filter to sanitise the water going into the tank.

If the holding tank is full and the cisterns are full for the toilets, any excess waste water is directed into the sewer. If a cistern is emptied and the holding tank has insufficient water to fill it, then a make-up line provides water from the municipal water supply. Suitably, an air break is provided between the municipal water supply and the highest level achievable in the tank to avoid any possibility of grow back or other back contamination into the municipal water supply. The filter element is cleaned and/or changed regularly, and the chlorine tablet is replaced as necessary, although, the applicant has surprisingly been found that with a ventilated holding tank, the chlorination is not necessary. Additionally, the holding tank may be provided with a removable lid to facilitate cleaning of the holding tank and maintenance of the pump.

It will of course be realised that while the above has been given by way of illustrative example of this invention, all such and other modifications and variations thereto as would be apparent to persons skilled in the art are deemed to fall within the broad scope and ambit of this invention as claimed in the following claims.

Claims

— CLAIMS —
1. A method of recycling waste water including:- collecting and storing grey water in a holding tank assembly; providing a make-up water supply to said holding tank assembly for maintaining the water level therein between desired levels; delivering water from the holding tank assembly to a water flush toilet for flushing the toilet.
2. A method as claimed in claim 1 and including:- providing the water flush toilet with a flushing cistern; providing said holding tank assembly with an overflow to waste; selecting said desired levels as a lower level sufficient to refill the cistern and an upper level below the overflow to waste, and causing the make-up water to enter said cαiik from an inlet disposed above said overflow to waste.
3. A method as claimed in claim 1 or claim 2 and including positioning said holding tank assembly for gravitational feed of grey water thereto and providing a pump assembly for pumping water from said holding tank assembly to said cistern.
4. A method as claimed in any one of the preceding claims and including providing treatment in the grey water supply to said holding tank assembly and treating the grey water prior to entry to said holding tank assembly.
5. A method as claimed in claim 4, and including treating the grey water by filtration and/or chemical treatment.
6. Waste water recycling apparatus including:- a holding tank assembly for holding grey water; delivery means for delivering water held in the holding tank assembly to a water closet; inlet means for receiving grey water to be held in the holding tank assembly; overflow discharge means for discharging overflow of water received into the holding tank assembly to waste, and a make-up water supply to said holding tank assembly for maintaining the water level therein between desired levels.
7. Waste water recycling apparatus as claimed in claim 6, wherein said holding tank assembly includes a plurality of auxiliary tanks and the discharge means of one auxiliary tank is selectively coupled to the make-up water supply of a further auxiliary tank.
8. Waste water recycling apparatus as claimed in claim 6 or claim 7, and including yrey water reticulation means connectible to said tank inlet means.
9. Waste water treatment apparatus as claimed in any one of claims 6 to 8, and including exit filtration means for filtering the water being pumped from the holding tank assembly.
10. A building having a waste water recycling apparatus including:- a holding tank assembly for holding grey water; delivery means for delivering water held in the holding tank assembly to a cistern for a water closet; inlet means for receiving grey water to be held in the holding tank assembly; overflow discharge means for discharging overflow of water received into the holding tank assembly to waste; a make-up water supply to said holding tank assembly for maintaining the water level therein between desired levels, and wherein said levels include a lower level sufficient to refill the cistern and an upper level below the overflow to waste, and said make-up water supply is disposed above said overflow to waste.
10. A building as claimed in claim 9 and including connection means connecting said holding tank assembly with a further holding tank assembly associated with another cistern.
PCT/AU1993/000450 1992-09-03 1993-09-03 Apparatus and method for waste water recycling WO1994005866A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AUPL4490 1992-09-03
AUPL449092 1992-09-03

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AU49354/93A AU4935493A (en) 1992-09-03 1993-09-03 Apparatus and method for waste water recycling

Publications (1)

Publication Number Publication Date
WO1994005866A1 true WO1994005866A1 (en) 1994-03-17

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Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2056022A1 (en) * 1993-02-25 1994-09-01 Alarcon Candelas Lopez System for economizing sanitary-system water
DE4421668A1 (en) * 1994-06-23 1996-01-11 Grohe Kg Hans Waste washing water re-cycling system
WO1997002387A1 (en) * 1995-07-05 1997-01-23 West Business Oy Sanitary system and method for utilization of used household water
ES2114764A1 (en) * 1994-05-16 1998-06-01 Sanchez Gerardo Bonifaci Reutilization of domestic water
ES2134702A1 (en) * 1996-09-25 1999-10-01 Paule Julian Retortillo Installation for the re-use of clean waste water in any type of building
WO1999054559A1 (en) * 1998-04-21 1999-10-28 Kok Wing Lee A system for reusing waste water
US6780317B1 (en) 1999-07-12 2004-08-24 Oy Clewer Ltd Method of purifying water, suitable bacteria for the method and use thereof
WO2008023084A1 (en) * 2006-08-22 2008-02-28 RODRIGUEZ HINOJOSA, Jesús Self-contained system for using water employed in dwellings
WO2008101276A1 (en) * 2007-02-20 2008-08-28 Perpetual Water Pty Ltd Apparatus and method for removing contaminants from water
ES2306584A1 (en) * 2006-08-24 2008-11-01 Antonio Ricardo Pigner Moral Autonomous use of water recycled in chalet, townhouse or paired.
CN100491657C (en) 2004-09-23 2009-05-27 刘 晶;夏 彬 Household water-saving pipeline system
ES2343826A1 (en) * 2008-07-07 2010-08-10 Jose Miguel Aranda Gascon Deposit for the reuse of gray waters.
CN101806083A (en) * 2010-04-02 2010-08-18 宋旭 Device for reutilizing domestic water and method for using same
GB2473820A (en) * 2009-09-23 2011-03-30 Dlp Ltd Waste shower water recycling apparatus
WO2011089548A1 (en) 2010-01-21 2011-07-28 Nehemiah Kaplan Investments Ltd. A toilet flushing system for reusing gray water
CN102995708A (en) * 2012-12-19 2013-03-27 山东轻工业学院 Recycling device of domestic water
ES2414730R1 (en) * 2012-01-11 2013-09-30 Diaz Maria Isabel Losada Procedure for recovery and recovery of domestic waste water for cleaning of toilets
CN103388352A (en) * 2013-07-31 2013-11-13 无锡柯马机械有限公司 Household water-saving device
CN105275047A (en) * 2015-08-29 2016-01-27 广东碧丽饮水设备有限公司 Wastewater utilization device
CN110029701A (en) * 2019-06-03 2019-07-19 三门新贤科技有限公司 Secondary utilization device after a kind of sanitary sewage disposal

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2726527A1 (en) * 1977-06-11 1978-12-21 Heike Klawe Domestic water saving system with collector tank - utilises waste water from appliances and baths for toilet flushing
AU8964282A (en) * 1981-11-09 1983-05-19 Bain, John Alexander Method and means of utilising lightly contaminated water
DE3536691A1 (en) * 1985-10-15 1987-04-16 Albert Blum Water-saving device for toilet flushing
DE3712421A1 (en) * 1987-04-10 1988-10-20 Harald Kraft Apparatus for substituting drinking water for the purpose of toilet flushing

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2726527A1 (en) * 1977-06-11 1978-12-21 Heike Klawe Domestic water saving system with collector tank - utilises waste water from appliances and baths for toilet flushing
AU8964282A (en) * 1981-11-09 1983-05-19 Bain, John Alexander Method and means of utilising lightly contaminated water
DE3536691A1 (en) * 1985-10-15 1987-04-16 Albert Blum Water-saving device for toilet flushing
DE3712421A1 (en) * 1987-04-10 1988-10-20 Harald Kraft Apparatus for substituting drinking water for the purpose of toilet flushing

Cited By (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2056022A1 (en) * 1993-02-25 1994-09-01 Alarcon Candelas Lopez System for economizing sanitary-system water
ES2114764A1 (en) * 1994-05-16 1998-06-01 Sanchez Gerardo Bonifaci Reutilization of domestic water
DE4421668A1 (en) * 1994-06-23 1996-01-11 Grohe Kg Hans Waste washing water re-cycling system
WO1997002387A1 (en) * 1995-07-05 1997-01-23 West Business Oy Sanitary system and method for utilization of used household water
ES2134702A1 (en) * 1996-09-25 1999-10-01 Paule Julian Retortillo Installation for the re-use of clean waste water in any type of building
WO1999054559A1 (en) * 1998-04-21 1999-10-28 Kok Wing Lee A system for reusing waste water
US6780317B1 (en) 1999-07-12 2004-08-24 Oy Clewer Ltd Method of purifying water, suitable bacteria for the method and use thereof
CN100491657C (en) 2004-09-23 2009-05-27 刘 晶;夏 彬 Household water-saving pipeline system
WO2008023084A1 (en) * 2006-08-22 2008-02-28 RODRIGUEZ HINOJOSA, Jesús Self-contained system for using water employed in dwellings
ES2292355A1 (en) * 2006-08-22 2008-03-01 Antonio Ricardo Pigner Moral Autonomous use of waters used in housing.
ES2306584A1 (en) * 2006-08-24 2008-11-01 Antonio Ricardo Pigner Moral Autonomous use of water recycled in chalet, townhouse or paired.
WO2008101276A1 (en) * 2007-02-20 2008-08-28 Perpetual Water Pty Ltd Apparatus and method for removing contaminants from water
ES2343826A1 (en) * 2008-07-07 2010-08-10 Jose Miguel Aranda Gascon Deposit for the reuse of gray waters.
GB2473820A (en) * 2009-09-23 2011-03-30 Dlp Ltd Waste shower water recycling apparatus
GB2473820B (en) * 2009-09-23 2014-12-17 Dlp Ltd Waste shower water recycle apparatus
WO2011089548A1 (en) 2010-01-21 2011-07-28 Nehemiah Kaplan Investments Ltd. A toilet flushing system for reusing gray water
CN101806083A (en) * 2010-04-02 2010-08-18 宋旭 Device for reutilizing domestic water and method for using same
CN101806083B (en) 2010-04-02 2012-04-18 宋旭 Device for reutilizing domestic water and method for using same
ES2414730R1 (en) * 2012-01-11 2013-09-30 Diaz Maria Isabel Losada Procedure for recovery and recovery of domestic waste water for cleaning of toilets
CN102995708A (en) * 2012-12-19 2013-03-27 山东轻工业学院 Recycling device of domestic water
CN103388352A (en) * 2013-07-31 2013-11-13 无锡柯马机械有限公司 Household water-saving device
CN105275047A (en) * 2015-08-29 2016-01-27 广东碧丽饮水设备有限公司 Wastewater utilization device
CN105275048A (en) * 2015-08-29 2016-01-27 广东碧丽饮水设备有限公司 Wastewater utilization machine
CN110029701A (en) * 2019-06-03 2019-07-19 三门新贤科技有限公司 Secondary utilization device after a kind of sanitary sewage disposal

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