WO2008023084A1 - Self-contained system for using water employed in dwellings - Google Patents

Self-contained system for using water employed in dwellings Download PDF

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Publication number
WO2008023084A1
WO2008023084A1 PCT/ES2007/000494 ES2007000494W WO2008023084A1 WO 2008023084 A1 WO2008023084 A1 WO 2008023084A1 ES 2007000494 W ES2007000494 W ES 2007000494W WO 2008023084 A1 WO2008023084 A1 WO 2008023084A1
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WO
WIPO (PCT)
Prior art keywords
water
tank
filter
pump
waters
Prior art date
Application number
PCT/ES2007/000494
Other languages
Spanish (es)
French (fr)
Inventor
Gerardo Torres Bracero
Original Assignee
RODRIGUEZ HINOJOSA, Jesús
Pigner Moral, Antonio, Ricardo
Ruiz Roman, Rafael
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
Application filed by RODRIGUEZ HINOJOSA, Jesús, Pigner Moral, Antonio, Ricardo, Ruiz Roman, Rafael filed Critical RODRIGUEZ HINOJOSA, Jesús
Publication of WO2008023084A1 publication Critical patent/WO2008023084A1/en

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
    • E03B1/00—Methods or layout of installations for water supply
    • E03B1/04—Methods or layout of installations for water supply for domestic or like local supply
    • 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
    • C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
    • 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
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
    • E03B1/00—Methods or layout of installations for water supply
    • E03B1/04—Methods or layout of installations for water supply for domestic or like local supply
    • E03B1/041—Greywater supply systems
    • E03B2001/045—Greywater supply systems using household water
    • 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
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A20/00—Water conservation; Efficient water supply; Efficient water use
    • Y02A20/152—Water filtration

Definitions

  • the present invention relates to a system for recycling domestic wastewater by which the water from the shower or bathtub, the washbasin and the bidet of a single dwelling is collected and used for filling the tank and consequent cleaning of the toilet as well as for cleaning the house. It falls within the field of sanitary and plumbing installations present in bathrooms and toilets of homes located in blocks of flats, including both the system of evacuation of domestic wastewater, as all those elements such as the siphonic boat and pipes
  • the drain of the bathroom allows the installation of a pressure pump, a filter and a tank to be recycled once the water coming from the drain of the bathtub or the sink or the bidet for use as a discharge from the tank of the toilet.
  • the installation and the mechanism of the invention has the same functionality with certain structural characteristics different from the aforementioned installations and mechanisms, and with the particularity of simplicity in terms of the set of parts and their assembly.
  • the present invention is constituted from a water tank located under the bathtub of the bathroom of a single-family dwelling that collects the water coming from the siphonic boat, which is the collector where the waters of the bath or shower, of the washbasin and of the bidet.
  • Said siphonic boat unlike the others, presents a filter for solid waste, such as small objects, papers, hair.
  • the water from it does not go directly to the drain of the house, but to the aforementioned reservoir under the bathtub.
  • a purification kit consisting of an assembly consisting of a booster pump preceded by a second mesh filter and immediately followed by a sand filter that can also be activated carbon.
  • the pump is automatically activated by means of sensors driving the already purified water to an upper tank in the same bathroom and from there it falls through its own weight until filling the toilet cistern on the one hand and a tap of non-potable water for cleaning.
  • the cistern consists of two water inlets, a priority that is recycled water and a second one in the case where there is a lack of recycled water, in which case water enters the network.
  • Toilet tank (15) Point of non-potable water for domestic cleaning.
  • a preferred embodiment of the invention is constituted from a water tank (3) under the bathtub that collects through its respective ducts (7) the water coming from the siphon canister (1), in which the waters of the Ia converge bath or shower (6), washbasin (4) and bidet (5).
  • Said siphonic canister (1) unlike the others, has a filter (2) for solid waste, such as small objects, papers, hair. Also unlike the other siphon boats, the water from it does not go directly to the drain of the house, but to the aforementioned tank (3) under the bathtub.
  • a purification kit (8) consisting of an assembly consisting of a booster pump (9) preceded by a second mesh filter (10) and immediately followed by a sand filter (12).
  • the pump is automatically activated by means of sensors (1 1) by pushing the purified water to an upper tank (13) in the same bathroom and from there it falls by its own weight until filling the tank (14) of the toilet by one part and a non-potable water tap (15) for cleaning.
  • the cistern consists of two water inlets, a priority that is the entry of recycled water (1 B) and a second one in the case where there is a lack of recycled water, in which case the water inlet of the network (17) is used.
  • the industrial application of this set is as a double action mechanism (controlled volume of water or total water tank) for discharging water in toilet tanks, constituting an autonomous system adaptable to tank models and existing.

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Hydrology & Water Resources (AREA)
  • Public Health (AREA)
  • Water Supply & Treatment (AREA)
  • Sanitary Device For Flush Toilet (AREA)
  • Water Treatment By Sorption (AREA)

Abstract

The invention relates to a self-contained system for using water employed in dwellings. The invention is formed by a tank that collects water from the siphon trap which, unlike other traps, includes a filter for solid waste and does not discharge water into the drain of the dwelling, but instead into the aforementioned tank. The tank contains a purification kit consisting of an assembly comprising a drive pump with an upstream second mesh filter and a sand filter immediately downstream thereof. The pump drives the purified water (i) into an upper tank in the same bathroom, wherefrom the water falls under its own weight until it has filled the toilet cistern, and (ii) to a non-potable water tap for cleaning.

Description

APROVECHAMIENTO AUTÓNOMO DE AGUAS USADAS EN VIVIENDAS AUTONOMOUS USE OF WATERS USED IN HOUSING
La presente invención se refiere a un sistema de reciclado de aguas residuales domésticas por el que se recogen las aguas procedentes de Ia ducha o bañera, del lavabo y del bidé de una sola vivienda y se utilizan para el llenado de Ia cisterna y consiguiente limpieza del inodoro así como para limpieza de Ia vivienda. Se encuadra dentro del campo de instalaciones sanitarias y de fontanería presentes en cuartos de baño y de aseo de viviendas situadas en bloques de pisos, incluyendo tanto el sistema de evacuación de aguas residuales domésticas, como todos aquellos elementos que como el bote sifónico y las conducciones de desagüe del cuarto de baño permiten que con Ia instalación de una bomba de presión, un filtro y un depósito sean recicladas por una vez las aguas procedentes del desagüe de Ia bañera o el lavabo o el bidé para su utilización como descarga de Ia cisterna del inodoro. Son conocidas distintas instalaciones semejantes a Ia de Ia invención, básicamente aquellas que constan de un depósito en el subsuelo de un edificio de viviendas que recoge las aguas procedentes de bañeras, duchas y lavabos de todo el edificio para bombearlas a un depósito en el techo del edificio desde donde son conducidas a las cisternas de los inodoros de éste. Producen el mismo efecto: un ahorro en el consumo de agua ya que en los dos casos las cisternas de los inodoros funcionan con aguas usadas. Otras instalaciones y dispositivos controlan de un modo complejo (incluso electrónicamente) el flujo de una única bomba situada poco antes del bote sifónico, y de ahí es llevada a Ia cisterna del inodoro de modo que según cada una de las disposiciones de Ia misma hay un flujo distinto; aunque Ia versatilidad de estos sistemas en cuanto a número de flujos distintos es superior al de Ia invención, el coste y desarrollo de los mismos así como Ia complejidad hacen que no suelan ser muy usados en Ia práctica.The present invention relates to a system for recycling domestic wastewater by which the water from the shower or bathtub, the washbasin and the bidet of a single dwelling is collected and used for filling the tank and consequent cleaning of the toilet as well as for cleaning the house. It falls within the field of sanitary and plumbing installations present in bathrooms and toilets of homes located in blocks of flats, including both the system of evacuation of domestic wastewater, as all those elements such as the siphonic boat and pipes The drain of the bathroom allows the installation of a pressure pump, a filter and a tank to be recycled once the water coming from the drain of the bathtub or the sink or the bidet for use as a discharge from the tank of the toilet. Various facilities similar to that of the invention are known, basically those consisting of a deposit in the basement of a residential building that collects water from bathtubs, showers and sinks throughout the building to pump them to a tank on the roof of the building from where they are led to the cisterns of its toilets. They produce the same effect: a saving in water consumption since in both cases the toilet tanks work with wastewater. Other facilities and devices control in a complex way (even electronically) the flow of a single pump located shortly before the siphon canister, and from there it is taken to the toilet cistern so that according to each of the provisions of the same there is a distinct flow; Although the versatility of these systems in terms of the number of different flows is greater than that of the invention, their cost and development as well as the complexity mean that they are not usually used in practice.
Otras variaciones son las que aprovechan el agua procedente de Ia lavadora y Ia propia bomba de ésta para impulsar agua a Ia cisterna.Other variations are those that take advantage of the water coming from the washing machine and the pump itself to drive water to the tank.
La instalación y el mecanismo de Ia invención tiene una misma funcionalidad con determinadas características estructurales distintas a las instalaciones y mecanismos anteriormente mencionados, y con Ia particularidad de Ia simplicidad en cuanto al conjunto de piezas y al montaje de las mismas.The installation and the mechanism of the invention has the same functionality with certain structural characteristics different from the aforementioned installations and mechanisms, and with the particularity of simplicity in terms of the set of parts and their assembly.
También constituye un conjunto que es independiente de por sí, es decir, adaptable a cuartos de baño ya existentes sin apenas modificaciones. Además, Ia mayor parte de las piezas pueden ser fabricadas de materiales plásticos, con el buen grado de mantenimiento y conservación que suponen los mismos en este tipo de conjuntos frente a los materiales metálicos.It also constitutes a set that is independent of itself, that is, adaptable to already existing bathrooms with hardly any modifications. In addition, most of the pieces can be made of plastic materials, with the good degree of maintenance and conservation that suppose the same in this type of sets against the metallic materials.
Una de las más significativas ventajas de Ia presente invención frente a las conocidas es que en ésta Ia depuración es autónoma, realizándose sobre las propias aguas de Ia vivienda individual, siendo éstas aguas las únicas que se usan por segunda vez o reciclan. Esta ventaja contrasta con el inconveniente de usar en una vivienda aguas que a pesar de estar relativamente depuradas, proceden de Ia vivienda de otro. La presente invención se constituye a partir de un depósito de agua situado bajo Ia bañera del cuarto de baño de una vivienda unifamiliar que recoge las aguas procedentes del bote sifónico, que es el colector donde confluyen las aguas de Ia bañera o ducha, del lavabo y del bidé. Dicho bote sifónico, a diferencia de los demás, presenta un filtro para residuos sólidos, tales como pequeños objetos, papeles, cabellos. También a diferencia de los otros botes sifónicos, el agua de éste no va directamente al desagüe de Ia vivienda, sino al mencionado depósito debajo de Ia bañera. En éste depósito se encuentra un kit de depuración consistente en un conjunto compuesto por una bomba impulsora precedida de un segundo filtro de malla y seguida inmediatamente de un filtro de arena que también puede ser de carbón activado. La bomba es activada automáticamente por medio de sensores impulsando el agua ya depurada a un depósito superior en el mismo cuarto de baño y de allí cae por su propio peso hasta llenar Ia cisterna del inodoro por una parte y a un grifo de agua no potable para Ia limpieza.One of the most significant advantages of the present invention over the known ones is that in this one the purification is autonomous, being carried out on the waters of the individual housing, these waters being the only ones that are used for the second time or recycled. This advantage contrasts with the inconvenience of using water in a house that, despite being relatively purified, comes from the home of another. The present invention is constituted from a water tank located under the bathtub of the bathroom of a single-family dwelling that collects the water coming from the siphonic boat, which is the collector where the waters of the bath or shower, of the washbasin and of the bidet. Said siphonic boat, unlike the others, presents a filter for solid waste, such as small objects, papers, hair. Also unlike the other siphonic boats, the water from it does not go directly to the drain of the house, but to the aforementioned reservoir under the bathtub. In this tank is a purification kit consisting of an assembly consisting of a booster pump preceded by a second mesh filter and immediately followed by a sand filter that can also be activated carbon. The pump is automatically activated by means of sensors driving the already purified water to an upper tank in the same bathroom and from there it falls through its own weight until filling the toilet cistern on the one hand and a tap of non-potable water for cleaning.
La cisterna consta de dos entradas de agua, una prioritaria que es el agua reciclada y una segunda para el caso en que falte agua reciclada, en cuyo caso entra agua de Ia red.The cistern consists of two water inlets, a priority that is recycled water and a second one in the case where there is a lack of recycled water, in which case water enters the network.
El mecanismo de enlace entre ambos depósitos y el funcionamiento del conjunto, así como una ampliación de detalles quedarán mejor reflejados a través de los dibujos.The mechanism of connection between both deposits and the operation of the set, as well as an extension of details will be better reflected through the drawings.
Para Ia mejor comprensión de cuanto queda descrito en Ia presente memoria se acompañan unos dibujos en los que a título de ejemplo se representa un caso práctico de realización del aparato mecanismo y su funcionamiento.For a better understanding of what is described herein, some drawings are attached in which, by way of example, a practical case of the realization of the mechanism mechanism and its operation is represented.
En dichos dibujos:In these drawings:
• Figura 1 : Esquema del circuito hidráulico completo. Los detalles numerados corresponden a:• Figure 1: Diagram of the complete hydraulic circuit. The numbered details correspond to:
(1 ] Bote sifónico(1] Siphon Boat
(2) Filtro del bote sifónico.(2) Siphon canister filter.
(3) Depósito de agua bajo Ia bañera(3) Water tank under the bathtub
(4) Lababo. (5] Bidé(4) Lababo. (5] Bidet
(B) Bañera ducha.(B) Bathtub shower.
(7) Conducto de agua.(7) Water pipe.
(8) Kit de depuración (9] Bomba (10) Filtro de malla de Ia bomba. (1 1 )Sensor(8) Purification kit (9] Pump (10) Mesh filter of the pump. (1 1) Sensor
[12] Filtro de arena[12] Sand filter
[13) Depósito superior.[13) Upper deposit.
(14) Cisterna del inodoro (15) Punto de agua no potable para limpieza doméstica.(14) Toilet tank (15) Point of non-potable water for domestic cleaning.
(16) Entrada de agua reciclada en el cisterna(16) Recycled water inlet in the cistern
(17) Entrada de agua de red en Ia cisterna(17) Network water inlet in the cistern
Una realización preferida de Ia invención se constituye a partir de un depósito de agua (3) bajo Ia bañera que recoge a través de sus respectivos conductos (7) las aguas procedentes del bote sifónico (1), en el que confluyen las aguas de Ia bañera o ducha (6), del lavabo (4) y del bidé (5). Dicho bote sifónico (1), a diferencia de los demás, presenta un filtro (2) para residuos sólidos, tales como pequeños objetos, papeles, cabellos. También a diferencia de los otros botes sifónicos, el agua de éste no va directamente al desagüe de Ia vivienda, sino al mencionado depósito (3) debajo de Ia bañera. En éste depósito se encuentra un kit de depuración (8) consistente en un conjunto compuesto por una bomba impulsora (9) precedida de un segundo filtro de malla (10) y seguida inmediatamente de un filtro de arena (12). La bomba es activada automáticamente por medio de sensores (1 1 ) impulsando el agua depurada a un depósito superior (13) en el mismo cuarto de baño y de allí cae por su propio peso hasta llenar Ia cisterna (14) del inodoro por una parte y a un grifo de agua no potable (15) para Ia limpieza. B La cisterna consta de dos entradas de agua, una prioritaria que es Ia entrada del agua reciclada (1 B) y una segunda para el caso en que falte agua reciclada, en cuyo caso se utiliza Ia entrada agua de Ia red (17). Aunque ya se ha mencionado anteriormente, Ia aplicación industrial de este conjunto es como mecanismo de doble acción (volumen controlado de agua o total de Ia cisterna) de descarga de agua en cisternas de inodoros, constituyendo un sistema autónomo adaptable a los modelos de cisternas ya existentes. A preferred embodiment of the invention is constituted from a water tank (3) under the bathtub that collects through its respective ducts (7) the water coming from the siphon canister (1), in which the waters of the Ia converge bath or shower (6), washbasin (4) and bidet (5). Said siphonic canister (1), unlike the others, has a filter (2) for solid waste, such as small objects, papers, hair. Also unlike the other siphon boats, the water from it does not go directly to the drain of the house, but to the aforementioned tank (3) under the bathtub. In this tank is a purification kit (8) consisting of an assembly consisting of a booster pump (9) preceded by a second mesh filter (10) and immediately followed by a sand filter (12). The pump is automatically activated by means of sensors (1 1) by pushing the purified water to an upper tank (13) in the same bathroom and from there it falls by its own weight until filling the tank (14) of the toilet by one part and a non-potable water tap (15) for cleaning. B The cistern consists of two water inlets, a priority that is the entry of recycled water (1 B) and a second one in the case where there is a lack of recycled water, in which case the water inlet of the network (17) is used. Although it has already been mentioned above, the industrial application of this set is as a double action mechanism (controlled volume of water or total water tank) for discharging water in toilet tanks, constituting an autonomous system adaptable to tank models and existing.

Claims

REIVINDICACIONES
1.- Aprovechamiento autónomo de aguas usadas en viviendas, caracterizado porque se constituye a partir de un depósito de agua situado bajo Ia bañera del cuarto de baño de una sola vivienda en el que se recogen las aguas procedentes del bote sifónico, donde confluyen las aguas de Ia bañera o ducha, del lavabo y del bidé. Dicho bote sifónico presenta un filtro para residuos sólidos, tales como pequeños objetos, papeles, cabellos y sus aguas no van directamente al desagüe de Ia vivienda, sino al mencionado depósito debajo de Ia bañera. En éste depósito se encuentra un kit de depuración consistente en un conjunto compuesto por una bomba impulsora precedida de un segundo filtro de malla y seguida inmediatamente de un filtro de arena. La bomba es activada automáticamente por medio de sensores impulsando el agua ya depurada a un depósito superior en el mismo cuarto de baño para de allí caer por su propio peso hasta llenar Ia cisterna del inodoro por una parte y a un grifo de agua no potable para Ia limpieza.1.- Autonomous use of water used in homes, characterized in that it is constituted from a water tank located under the bathtub of the bathroom of a single house in which the waters from the siphon boat are collected, where the waters converge of the bath or shower, the sink and the bidet. Said siphon canister presents a filter for solid waste, such as small objects, papers, hair and its waters do not go directly to the drain of the house, but to the aforementioned deposit under the bathtub. In this tank is a purification kit consisting of an assembly consisting of a booster pump preceded by a second mesh filter and immediately followed by a sand filter. The pump is automatically activated by means of sensors, pushing the already purified water to an upper tank in the same bathroom and from there it falls by its own weight until the toilet tank is filled on one side and a non-potable water tap for the cleaning.
2.- Aprovechamiento autónomo de aguas usadas en viviendas según reivindicación 1 caracterizado porque el filtro que se encuentra inmediatamente después de Ia bomba de agua es de carbón activado.2. Autonomous use of water used in homes according to claim 1, characterized in that the filter found immediately after the water pump is activated carbon.
3.- Aprovechamiento autónomo de aguas usadas en viviendas según reivindicación 1 caracterizado porque Ia cisterna consta de dos entradas de agua, una prioritaria que es el agua reciclada y una segunda pana el caso en que falte agua neciclada, en cuyo caso entra agua de Ia red. 3. Autonomous use of water used in homes according to claim 1 characterized in that the cistern consists of two water inlets, a priority that is water recycled and a second corduroy the case in which there is a lack of water neciclada, in which case water enters the network.
PCT/ES2007/000494 2006-08-22 2007-08-22 Self-contained system for using water employed in dwellings WO2008023084A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ES200602237A ES2292355B1 (en) 2006-08-22 2006-08-22 AUTONOMOUS USE OF WATERS USED IN HOUSING.
ESP200602237 2006-08-22

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010120202A1 (en) * 2009-04-15 2010-10-21 Montez Joao Pedro Bath water reusing system driven by supply water pressure
IT201700091242A1 (en) * 2017-08-07 2019-02-07 Domenico Mussari Gray water recovery device for the use of these waters as a toilet flush
IT201800009685A1 (en) * 2018-10-23 2020-04-23 Germano Nistico' System for the recovery of waste water
EP4296440A1 (en) * 2022-06-20 2023-12-27 Kohler Co. Bathroom system

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2317757B1 (en) * 2006-09-01 2010-02-05 Jose Vicente Lopez Vazquez DOMESTIC SEMI-RESIDUAL WATER REUSING SYSTEM IN THE TOILET TANK.
WO2011089548A1 (en) 2010-01-21 2011-07-28 Nehemiah Kaplan Investments Ltd. A toilet flushing system for reusing gray water

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Publication number Priority date Publication date Assignee Title
WO1994005866A1 (en) * 1992-09-03 1994-03-17 Hydrosave Recycling Systems Pty Ltd Apparatus and method for waste water recycling
GB2281582A (en) * 1993-09-02 1995-03-08 John Peter Hernon A domestic waste water recovery system
ES1032667U (en) * 1995-12-04 1996-06-01 Reciclagua S L Recycling plant wastewater in housing for use in flushing toilets. (Machine-translation by Google Translate, not legally binding)
ES2114764A1 (en) * 1994-05-16 1998-06-01 Sanchez Gerardo Bonifaci Reutilization of domestic water
GB2324330A (en) * 1997-04-18 1998-10-21 Edward John Cowell Apparatus for recycling waste water
ES2206032A1 (en) * 2002-07-19 2004-05-01 Jose Maregil Alonso Domestic residual water reuse system for use in collective households, has lower tank to receive filtered residual water from drain traps, and upper tank to receive and recirculate water to toilet bowls

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994005866A1 (en) * 1992-09-03 1994-03-17 Hydrosave Recycling Systems Pty Ltd Apparatus and method for waste water recycling
GB2281582A (en) * 1993-09-02 1995-03-08 John Peter Hernon A domestic waste water recovery system
ES2114764A1 (en) * 1994-05-16 1998-06-01 Sanchez Gerardo Bonifaci Reutilization of domestic water
ES1032667U (en) * 1995-12-04 1996-06-01 Reciclagua S L Recycling plant wastewater in housing for use in flushing toilets. (Machine-translation by Google Translate, not legally binding)
GB2324330A (en) * 1997-04-18 1998-10-21 Edward John Cowell Apparatus for recycling waste water
ES2206032A1 (en) * 2002-07-19 2004-05-01 Jose Maregil Alonso Domestic residual water reuse system for use in collective households, has lower tank to receive filtered residual water from drain traps, and upper tank to receive and recirculate water to toilet bowls

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010120202A1 (en) * 2009-04-15 2010-10-21 Montez Joao Pedro Bath water reusing system driven by supply water pressure
IT201700091242A1 (en) * 2017-08-07 2019-02-07 Domenico Mussari Gray water recovery device for the use of these waters as a toilet flush
IT201800009685A1 (en) * 2018-10-23 2020-04-23 Germano Nistico' System for the recovery of waste water
EP4296440A1 (en) * 2022-06-20 2023-12-27 Kohler Co. Bathroom system

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ES2292355B1 (en) 2008-10-01

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