GB2304780A - Water recirculation system and storage tank for use therein - Google Patents

Water recirculation system and storage tank for use therein Download PDF

Info

Publication number
GB2304780A
GB2304780A GB9524081A GB9524081A GB2304780A GB 2304780 A GB2304780 A GB 2304780A GB 9524081 A GB9524081 A GB 9524081A GB 9524081 A GB9524081 A GB 9524081A GB 2304780 A GB2304780 A GB 2304780A
Authority
GB
United Kingdom
Prior art keywords
water
recirculation system
storage tank
system according
water recirculation
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
GB9524081A
Other versions
GB2304780B (en
GB9524081D0 (en
Inventor
Stephen Arthur Bannocks
Original Assignee
Stephen Arthur Bannocks
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 GBGB9517575.8A priority Critical patent/GB9517575D0/en
Priority to GBGB9517573.3A priority patent/GB9517573D0/en
Priority to GBGB9517577.4A priority patent/GB9517577D0/en
Priority to GBGB9517574.1A priority patent/GB9517574D0/en
Priority to GBGB9517572.5A priority patent/GB9517572D0/en
Priority to GBGB9517571.7A priority patent/GB9517571D0/en
Priority to GBGB9517944.6A priority patent/GB9517944D0/en
Priority to GBGB9517945.3A priority patent/GB9517945D0/en
Priority to GBGB9521474.8A priority patent/GB9521474D0/en
Application filed by Stephen Arthur Bannocks filed Critical Stephen Arthur Bannocks
Publication of GB9524081D0 publication Critical patent/GB9524081D0/en
Publication of GB2304780A publication Critical patent/GB2304780A/en
Application granted granted Critical
Publication of GB2304780B publication Critical patent/GB2304780B/en
Anticipated expiration legal-status Critical
Application status is Expired - Fee Related legal-status Critical

Links

Classifications

    • EFIXED CONSTRUCTIONS
    • E03WATER SUPPLY; SEWERAGE
    • E03BINSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
    • E03B3/00Methods or installations for obtaining or collecting drinking water or tap water
    • E03B3/02Methods or installations for obtaining or collecting drinking water or tap water from rain-water
    • EFIXED CONSTRUCTIONS
    • E03WATER SUPPLY; SEWERAGE
    • E03BINSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
    • E03B3/00Methods or installations for obtaining or collecting drinking water or tap water
    • E03B3/02Methods or installations for obtaining or collecting drinking water or tap water from rain-water
    • E03B3/03Special vessels for collecting or storing rain-water for use in the household, e.g. water-butts
    • 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
    • Y02A20/10Relating to general water supply, e.g. municipal or domestic water supply
    • Y02A20/102Tanks
    • Y02A20/106Tanks for domestic applications
    • 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
    • Y02A20/10Relating to general water supply, e.g. municipal or domestic water supply
    • Y02A20/108Rainwater harvesting

Abstract

A water recirculation system comprises means to collect rainwater, means to convey said water to a storage tank and means to convey water from said tank to a lavatory cistern. The tank is preferably double-walled with the space between the walls containing an insulating material.

Description

WATER RECIRCULATION SYSTEM This invention relates to a system for the recirculation of water for use in place of potable water where use of such water is unnecessary, for example to flush lavatories.

In the UK, all water supplied to buildings is potable although it is not essential for all purposes that the water is of such quality. For example, the water used for flushing lavatories or for an outside tap need not be of drinking standard. Thus the use of potable water for such purposes is wasteful. Additionally, the gradual introduction of water metering has caused such wasteful usage to be expensive particularly in large buildings housing many people, for example in office blocks.

According to the invention, a water recirculation system comprises means to collect rain water falling on the roof of a building, means to convey collected water to at least one storage tank; and means to convey water from the storage tank to a lavatory for the flushing thereof.

Optionally, the collected rainwater may be mixed with collected non-foul waste water from use within the building before being conveyed to the lavatory.

Preferably, the collected non-foul waste water is from sinks, wash basins, baths, showers, washing machines and dishwashers. Advantageously, the waste water generally contains soap or detergent which, when used to flush the lavatory, will assist in the cleaning thereof.

Preferably, the means to collect rainwater comprises a tank mounted externally of the building. Conveniently, the rainwater may be collected directly from an existing guttering system on the building. The storage tank or tanks may be mounted at ground level, just above ground level, or may be mounted in an elevated position.

Mounting of the tank on a wall simplifies installation of the system in a building; for example the need to reinforce flooring to support the weight of a storage tank is eliminated. Additionally, the use of a wall mounted tank facilitates installation in a lavatory cubicle space. Optionally, pumps may be incorporated in the system to pump water to or from the storage tank.

Preferably, the storage tank is provided with a capacity regulator device such that the weight of the water stored therein will not deform the tank or promote its detachment from its mounting and such that the tank will not overflow. The capacity regulator device may be in the form of a valve, for example of the ballcock operating type or may be a simple weir-type arrangement or a standpipe. Optionally, a double-walled tank may be used, which would allow the use of a simple weir as a capacity regulator, excess water overflowing and collecting between the walls of the tanks, and would limit damage to the integrity of the tank walls on freezing due to the presence of an expansion gap.

Conveniently, the expansion gap also prevents deformation of the tank caused by the weight of the water held therein. Optionally, the tank may be insulated to prevent the water from freezing; the insulation material may conveniently be disposed in the expansion gap.

Water ducted from the tank to a lavatory may enter the lavatory cistern or may be ducted directly to the lavatory bowl, bypassing the cistern, the ducting itself bearing the flushing mechanism for the lavatory.

It is recognised that occasions may arise where insufficient recirculated water is stored in the storage tank to flush a lavatory and thus mains water ought still to be plumbed to the lavatory. Accordingly, a second aspect of the invention provides a lavatory cistern which has discrete dual supplies of mains water and of recirculated water. Preferably, means are provided to prevent the recirculated water from contaminating the mains water or from entering the mains supply.

The dual supply to the lavatory cistern may be achieved by the provision of branched ducting between the lavatory inlet pipe, the cistern and the storage tank.

Alternatively, the lavatory may be provided with a divided cistern, each division of which is independently operable with regard to filling and flushing.

Preferably, a cistern divided into two chambers is provided, each of the two chambers being able to be filled and flushed separately. The division may be longitudinal, transverse or such that the chambers are superposed. Preferably, one chamber is supplied directly with recirculated water while the other is supplied from the mains.

Embodiments of the invention will now be described by way of example with reference to the attached drawings of which: Figure 1 shows schematically a water recirculation system installed in a domestic house; Figures 2a, 2b, 2c and 2d show respective embodiments of a water storage tank suitable for use with the invention; and Figures 3a and 3b show two variants of a dual supplied lavatory cistern.

With reference to Figure 1, a house, generally indicated 10, has three storage tanks 11 mounted on its outside walls. Rainwater is collected in the guttering of the house drainage system and is conveyed to the tanks 11 by ducting 12. Excess water leaving the tanks 11 from overflow devices re-enters the normal house drainage system 13. Non-foul waste water from the house 10 is conveyed to at least one tank 11 by a duct 14.

Optionally, rainwater and waste water are mixed in one or more of the tanks 11. Water is ducted from tanks 11 to lavatory 15 by ducting 16.

Figure 2a shows a front elevation of a storage tank 11 for use in the system of the invention. The tank 11 is provided with an inlet 20 for rainwater, an inlet 21 for waste water, an outlet 22 for excess water and an outlet 23 to duct stored water to a lavatory.

Figure 2b is a cross-section of an insulated doublewalled tank 11 using a simple weir-type arrangement as an overflow. Insulation 19 is provided between the inner tank 30 and the outer tank 31. In use, water entering the inner tank 30 is conveyed through the inlet 20. The upper level of the wall of tank 30 is lower than the wall of the outer tank 31. When the water has reached the level indicated W, excess water will flow over the wall of tank 30 at a predetermined point and pass between the walls of the tanks 30, 31 until it enters the outlet 22 whence it is conveyed away from the tank. The outlet 23 from which water is ducted to the lavatory opens solely into the inner tank 30. The mouth of the outlet 23 is raised above the floor of the tank to allow particulate to sediment out of the collected water and be retained in the tank.

Figure 2c shows an alternative weir-type arrangement in a single-walled tank. Water enters the tank through inlets 20, 21 until the level of water is sufficiently high that it flows into the overflow standpipe 26 whence it is ducted away from the tank through outlet 22 into the house drainage system.

Figure 2d is a perspective view of an insulated double walled tank 11, the tank having an upright recess 60 formed in one double wall which, conveniently, can accommodate a drainpipe. The recess may be constituted by a gap in the outer wall and a groove in the inner wall; the upper edge 61 of the groove is lower in the inner tank 30 than in the outer tank 31, to provide a weir.

Figure 3a is a plan view of a dual supplied toilet cistern which is divided transversely into two chambers 40, 50, recirculated water being held in the chamber 40 and mains water in the chamber 50.

Figure 3b shows a twin supplied lavatory cistern divided longitudinally; again recirculated water is held in the chamber 40 and mains water in the chamber 50.

The chambers 40, 50 each have their own flushing mechanisms such that they are able to be flushed independently. Ducting between the chambers and the lavatory bowl is also divided to prevent contamination of the mains supply water with recirculated water.

Claims (18)

1. A water recirculation system comprising means to collect rainwater falling on the roof of a building, means to convey collected water to at least one storage tank; and means to convey water from the storage tank to a lavatory for the flushing thereof.
2. A water recirculation system according to Claim 1, including means to mix collected non-foul waste water from use within the building with the collected rainwater before being conveyed to the lavatory.
3. A water recirculation system according to Claim 2, in which the collected non-foul water is from sinks, wash basins, baths, showers, washing machines and dishwashers.
4. A water recirculation system according to Claim 1, in which the rainwater is collected directly from the guttering.
5. A water recirculation system according to Claim 1, in which the said at least one storage tank is mounted externally of the building.
6. A water recirculation system according to any preceding claim, in which the said at least one storage tank is mounted in an elevated position.
7. A water recirculation system according to any preceding claim, in which the system further includes at least one pump to pump water to or from the storage tank or tanks.
8. A water recirculation system according to any preceding claim, in which the collected water is ducted directly to the lavatory cistern.
9. A water recirculation system according to any one of Claims 1 to 7, in which the collected water is ducted directly to the lavatory bowl, the ducting incorporating a flushing mechanism.
10. A water recirculation system according to any preceding claim, in which mains water is also supplied to the lavatory cistern.
11. A water recirculation system according to Claim 10, in which the lavatory cistern is divided into two discrete chambers respectively for mains and recirculated water.
12. A water recirculation system according to Claim 11, in which the two chambers are independently flushable.
13. A storage tank suitable for use in a system according to any preceding claim, the tank including means for inlet of water from a roof and means for outlet of water to a lavatory cistern.
14. A storage tank according to Claim 13, in which the tank includes a capacity regulator device.
15. A storage tank according to Claim 14, in which the capacity regulator device is in the form of a ballcockoperated valve, a weir or a standpipe.
16. A storage tank according to any one of Claims 13 to 15, in which the tank is double-walled.
17. A storage tank according to Claim 16, in which the space between the walls contains an insulating material.
18. A water recirculation system substantially as hereinbefore described with reference to and as illustrated in the accompanying drawings.
GB9524081A 1995-08-29 1995-11-24 Water recirculation system Expired - Fee Related GB2304780B (en)

Priority Applications (9)

Application Number Priority Date Filing Date Title
GBGB9517577.4A GB9517577D0 (en) 1995-08-29 1995-08-29 The invention of a new side entry connection pipe between w.c. cistern and w.c. for the dual purpose of flushing w.c. with recycled water and mains water
GBGB9517574.1A GB9517574D0 (en) 1995-08-29 1995-08-29 The invention of a new straight run connection pipe between w.c. cistern and w.c. for the dual purpose of flushing w.c. with recycled water and mains water
GBGB9517572.5A GB9517572D0 (en) 1995-08-29 1995-08-29 Invention of system for the recycling of rain water and waste water incorporating a newly invented pipe between w.c. cistern and the w.c.
GBGB9517571.7A GB9517571D0 (en) 1995-08-29 1995-08-29 Combination W.C. cistern
GBGB9517575.8A GB9517575D0 (en) 1995-08-29 1995-08-29 The invention of a new forked connection pipe between w.c. cistern and w.c. for the dual purpose of flushing w.c. with recycled water and mains supplywater
GBGB9517573.3A GB9517573D0 (en) 1995-08-29 1995-08-29 Wall mounted rainwater and waste water vesel
GBGB9517945.3A GB9517945D0 (en) 1995-09-02 1995-09-02 Wall mounted rainwater &/or waste water collection vessel
GBGB9517944.6A GB9517944D0 (en) 1995-09-02 1995-09-02 Aerosol application of slate oil to roofing slates & other such roofing materials
GBGB9521474.8A GB9521474D0 (en) 1995-10-19 1995-10-19 Water recirculation system

Publications (3)

Publication Number Publication Date
GB9524081D0 GB9524081D0 (en) 1996-01-24
GB2304780A true GB2304780A (en) 1997-03-26
GB2304780B GB2304780B (en) 1997-09-17

Family

ID=27576361

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9524081A Expired - Fee Related GB2304780B (en) 1995-08-29 1995-11-24 Water recirculation system

Country Status (1)

Country Link
GB (1) GB2304780B (en)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2328471A (en) * 1997-07-05 1999-02-24 Alan Sanderson Water supply assembly
GB2329213A (en) * 1997-09-12 1999-03-17 Dennis Peter Graham Domestic water recycling tank
WO2004097122A1 (en) * 2003-05-02 2004-11-11 Ian John Higgins Water storage and supply system
GB2437527A (en) * 2006-04-24 2007-10-31 Ian Shephard Rainwater augmented domestic low-pressure water supply
AU2005227412B2 (en) * 2004-10-29 2009-06-11 White, H. M. A water storage receptacle
ITTO20090068A1 (en) * 2009-02-04 2010-08-05 Indesit Co Spa System for the exploitation of natural resources for buildings
CN101092822B (en) 2006-06-23 2010-12-22 王德生 Scheme for designing residential water supply, drainage, water saving pipelines as well as matched system at same layer
GB2476281A (en) * 2009-12-17 2011-06-22 Michael Bridge Gutter and downpipe rainwater collection and storage
EP2339074A1 (en) * 2009-12-23 2011-06-29 Brian Quigley A rainwater collection device
WO2011089548A1 (en) * 2010-01-21 2011-07-28 Nehemiah Kaplan Investments Ltd. A toilet flushing system for reusing gray water
GB2557590A (en) * 2016-12-09 2018-06-27 Webster Robert A rainwater harvesting system
FR3070406A1 (en) * 2017-08-25 2019-03-01 Patrick Frisch Autonomous device for reusing waste water from lavatory showers or bathtubs to feed toilet water hunting.

Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3467967A (en) * 1966-10-17 1969-09-23 Emil G Steinmann Stop drip
US3965493A (en) * 1975-03-12 1976-06-29 Bemis Manufacturing Company Water closet tank
GB2235719A (en) * 1989-09-05 1991-03-13 George Ernest Dunning Augmented water supply system
GB2242926A (en) * 1990-01-26 1991-10-16 John Kelly Water storage system
GB2249121A (en) * 1990-10-25 1992-04-29 Richard John Hampden Lucy Water supply system
GB2259733A (en) * 1991-09-17 1993-03-24 Roy Hamer Improvements relating to water cisterns
GB2266116A (en) * 1992-04-16 1993-10-20 John Victor Devey Water storage/recycling unit
GB2271372A (en) * 1992-10-06 1994-04-13 Alan Charles Sales Waste water process recovery system
GB2283048A (en) * 1993-10-20 1995-04-26 Joseph Allan Water supply system
GB2286609A (en) * 1994-02-18 1995-08-23 Thomas Craig Internally insulated tank
GB2286849A (en) * 1994-02-19 1995-08-30 Stephen Langford Water saving system
GB2288413A (en) * 1994-04-11 1995-10-18 Edgar Lionel Elsom Two-compartment toilet cistern incorporating water-powered turbine pump assembly

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3467967A (en) * 1966-10-17 1969-09-23 Emil G Steinmann Stop drip
US3965493A (en) * 1975-03-12 1976-06-29 Bemis Manufacturing Company Water closet tank
GB2235719A (en) * 1989-09-05 1991-03-13 George Ernest Dunning Augmented water supply system
GB2242926A (en) * 1990-01-26 1991-10-16 John Kelly Water storage system
GB2249121A (en) * 1990-10-25 1992-04-29 Richard John Hampden Lucy Water supply system
GB2259733A (en) * 1991-09-17 1993-03-24 Roy Hamer Improvements relating to water cisterns
GB2266116A (en) * 1992-04-16 1993-10-20 John Victor Devey Water storage/recycling unit
GB2271372A (en) * 1992-10-06 1994-04-13 Alan Charles Sales Waste water process recovery system
GB2283048A (en) * 1993-10-20 1995-04-26 Joseph Allan Water supply system
GB2286609A (en) * 1994-02-18 1995-08-23 Thomas Craig Internally insulated tank
GB2286849A (en) * 1994-02-19 1995-08-30 Stephen Langford Water saving system
GB2288413A (en) * 1994-04-11 1995-10-18 Edgar Lionel Elsom Two-compartment toilet cistern incorporating water-powered turbine pump assembly

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2328471A (en) * 1997-07-05 1999-02-24 Alan Sanderson Water supply assembly
GB2329213A (en) * 1997-09-12 1999-03-17 Dennis Peter Graham Domestic water recycling tank
WO2004097122A1 (en) * 2003-05-02 2004-11-11 Ian John Higgins Water storage and supply system
AU2005227412B2 (en) * 2004-10-29 2009-06-11 White, H. M. A water storage receptacle
GB2437527A (en) * 2006-04-24 2007-10-31 Ian Shephard Rainwater augmented domestic low-pressure water supply
CN101092822B (en) 2006-06-23 2010-12-22 王德生 Scheme for designing residential water supply, drainage, water saving pipelines as well as matched system at same layer
WO2010089636A1 (en) * 2009-02-04 2010-08-12 Indesit Company S.P.A. System for exploiting natural resources for buildings
ITTO20090068A1 (en) * 2009-02-04 2010-08-05 Indesit Co Spa System for the exploitation of natural resources for buildings
GB2476281A (en) * 2009-12-17 2011-06-22 Michael Bridge Gutter and downpipe rainwater collection and storage
GB2476281B (en) * 2009-12-17 2014-05-07 Michael Bridge Rainwater recirculation
EP2339074A1 (en) * 2009-12-23 2011-06-29 Brian Quigley A rainwater collection device
WO2011089548A1 (en) * 2010-01-21 2011-07-28 Nehemiah Kaplan Investments Ltd. A toilet flushing system for reusing gray water
GB2557590A (en) * 2016-12-09 2018-06-27 Webster Robert A rainwater harvesting system
FR3070406A1 (en) * 2017-08-25 2019-03-01 Patrick Frisch Autonomous device for reusing waste water from lavatory showers or bathtubs to feed toilet water hunting.

Also Published As

Publication number Publication date
GB2304780B (en) 1997-09-17
GB9524081D0 (en) 1996-01-24

Similar Documents

Publication Publication Date Title
DE69533145T2 (en) Method and device for water saving
US6721967B2 (en) Modular portable comfort station
US4653128A (en) Modular bathroom unit
US5251346A (en) Water recycling device for flush toilet use
US5967759A (en) Basement flash flood control system
US4366584A (en) Bathroom appliances
US5573677A (en) Washing machine rinse water recovery apparatus and method
US5345625A (en) Bath/shower water recycling system
US5452956A (en) Grey water recirculation system with odor prevention
US6328882B1 (en) Residential waste water recycling system
US5937455A (en) Electrically operated toilet water inlet valve system having a variable fill level
US4219428A (en) Water reservoir
GB2062043A (en) Water closet cisterns
JP2009523925A (en) Equipment for reusing sanitation wastewater
FI89294C (en) WC-modul
US3588922A (en) Lavatory-water closet combination
US5557812A (en) Waste water reuse system
US4377875A (en) Self-contained bathroom unit
US3188656A (en) Apparatus for the collection and utilization of waste water
GB2286849A (en) Water saving system
AU2006297912B2 (en) Greywater device and method for applying same
CN2647954Y (en) Water sealing box for water draining vertical pipe
EP1801319B1 (en) Public hygiene building
US4163293A (en) Flushing cistern
KR20030031038A (en) Water­selective water supplier of toilet

Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20041124