DE4005577A1 - Bath drain-water processing unit - has surge-arresting and initial-cleaning vessel upstream of tank - Google Patents

Bath drain-water processing unit - has surge-arresting and initial-cleaning vessel upstream of tank

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Publication number
DE4005577A1
DE4005577A1 DE4005577A DE4005577A DE4005577A1 DE 4005577 A1 DE4005577 A1 DE 4005577A1 DE 4005577 A DE4005577 A DE 4005577A DE 4005577 A DE4005577 A DE 4005577A DE 4005577 A1 DE4005577 A1 DE 4005577A1
Authority
DE
Germany
Prior art keywords
water
tank
cleaning
plant according
surge
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.)
Ceased
Application number
DE4005577A
Other languages
German (de)
Inventor
Friedrich Wilhelm Schulte
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to DE4005577A priority Critical patent/DE4005577A1/en
Publication of DE4005577A1 publication Critical patent/DE4005577A1/en
Ceased legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D17/00—Domestic hot-water supply systems
    • F24D17/0005—Domestic hot-water supply systems using recuperation of waste heat
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/02—Treatment of water, waste water, or sewage by heating
    • 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
    • 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
    • Y02A20/146—Water conservation; Efficient water supply; Efficient water use using grey water
    • Y02A20/148—Water conservation; Efficient water supply; Efficient water use using grey water using household water from wash basins or showers
    • 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
    • Y02A20/30—Relating to industrial water supply, e.g. used for cooling
    • 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
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/18—Domestic hot-water supply systems using recuperated or waste heat
    • 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
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/52—Heat recovery pumps, i.e. heat pump based systems or units able to transfer the thermal energy from one area of the premises or part of the facilities to a different one, improving the overall efficiency

Landscapes

  • Engineering & Computer Science (AREA)
  • Water Supply & Treatment (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Thermal Sciences (AREA)
  • Public Health (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Organic Chemistry (AREA)
  • Filtration Of Liquid (AREA)

Abstract

The compact unit prepares water drained from a bath and washing machine for re-use by pumping into toilet-flushing tanks or for cleaning. Waste heat from it is utilised by means of a heat-pump to provide washing water. A vessel (10) connected upstream of the drainwater tank (20) acts as a surge-arrester and has an initial cleaning effect. There can be a filter with two elements and a drain outlet mounted directly on the tank. This is so designed that water dripping from it can re-absorb oxygen, thus reducing odour. USE/ADVANTAGE - Compact, water storage and recycling unit with economy of water, and largely automatic in operation.

Description

Die Erfindung betrifft eine Kompaktanlage zur Aufbereitung von Abwasser aus dem Bade- und Waschbereich, mit Wassermangel­ sicherung und Nutzung der Wärme mittels handelsüblicher Wasser- Wasser- Wärmepumpe. Das gefilterte Wasser wird mittels Druck­ pumpenanlage in der Toilettenspülung wiederverwandt. Wegen der Waschmittelanteile kann das aufbereitete Abwasser zur Reinigung (z. b. in Autowaschanlagen, Fassadenreinigung usw.) verwandt werden.The invention relates to a compact system for processing Waste water from the bathing and washing area, with lack of water Securing and using the heat using commercially available water Water heat pump. The filtered water is pressure pump system reused in the toilet flush. Because of the The treated wastewater can be used for cleaning purposes (e.g. in car washes, facade cleaning, etc.) will.

30 bis 40% Wasser verbraucht ein Haushalt in der Toiletten­ spülung, ca. 10% Spülmaschinenwasser sind wegen unrentabler Filterung nicht nutzbar, also bleiben ca. 50% zur Reinigungs­ verwendung.A household in the toilet uses 30 to 40% water rinsing, approx. 10% dishwasher water are unprofitable Filtering cannot be used, so approx. 50% remain for cleaning use.

Eine Abwasserwiederverwendung in verschiedener Art und Weise ist bekannt (DE 27 26 527, DE 33 31 415 C2, DE 35 08 885 C2, DE 34 35 754 C2). Die genannten Anlagen beziehen sich entweder auf einzelne Sanitär­ teile oder sind ohne brauchbare Filterung, oder ohne eine gewisse Automatik durch Handregelung störanfällig, oder aufwendige Filterreinigung durch den Fachmann, oder sind großvolumig. Eine Verwendung in Waschmaschinen (DE 35 08 885 C2) ist bei Klarspül­ gängen nicht möglich da immer gelöste Waschmittelanteile im Ab­ wasser verbleiben. Eine Klärung durch Absinken von Schwebteilen funktioniert nicht, da das Wasser zu lange stehen muß und hier­ durch intensiver Geruch entsteht.There is a variety of ways to reuse wastewater known (DE 27 26 527, DE 33 31 415 C2, DE 35 08 885 C2, DE 34 35 754 C2). The systems mentioned either refer to individual sanitary facilities parts or are without usable filtering, or without a certain Automatic due to manual control prone to failure, or complex Filter cleaning by a specialist, or are large-volume. A Use in washing machines (DE 35 08 885 C2) is for rinse aid not possible because there is always detergent in the wash water remain. Clarification by lowering suspended particles does not work because the water has to stand too long and here arises from an intense smell.

Der Erfindung liegt die Aufgabe zu Grunde eine preiswerte, kom­ pakte, soweit wie möglich automatische und einfache Wasserspar­ anlage zu schaffen. Die vorhandene Abwärme sollte nutzbar sein. Der bei gebrauchtem Wasser entstehende intensive Geruch soll auf ein erträgliches Maß gemildert werden.The invention is based on the object of an inexpensive, com pacts, as far as possible automatic and simple water saving to create an investment. The existing waste heat should be usable. The intense smell that arises from used water is said to a tolerable measure to be mitigated.

Die Aufgabe wird erfindungsgemäß dadurch gelöst, daß der Abwasser­ zulauf (15) in einem Vorbehälter (Schwallbremse) (10) aufsteigt, wobei ein Filter (12) grobe Verunreinigungen zurückhält. Über einen Ablauf (13) mit Gummistopfen (11) kann der Vorbehälter durch einfaches Ablassen gereinigt werden. Die Gummistopfen (8) und (11) können auch durch Drehventile in der Abflußleitung er­ setzt werden. Der beruhigte Wasserfluß aus dem Vorbehälter läuft über die Rohrleitung (9) in den Kompaktfilter (5), welcher aus einem Handfiltersieb (7) und dem Filterkorb (6) besteht.The object is achieved in that the wastewater inlet ( 15 ) rises in a preliminary tank (surge brake) ( 10 ), a filter ( 12 ) retaining coarse impurities. Via a drain ( 13 ) with rubber stopper ( 11 ), the pre-tank can be cleaned by simply draining it. The rubber stopper ( 8 ) and ( 11 ) can also be set by rotary valves in the drain line. The calmed water flow from the primary tank runs through the pipeline ( 9 ) into the compact filter ( 5 ), which consists of a hand filter screen ( 7 ) and the filter basket ( 6 ).

Durch den beruhigten Wasserfluß können Verunreinigungen auf den Boden des Korbes (5) absinken und über den Ablauf (2) mit dem Stopfen (8) abgelassen werden. Die Behälter (5) und (10) können auch umweltfreundlich, ohne Reinigungsabläufe ausgeführt und je nach Stärke der Verschmutzung, ca. 1-4 mal jährlich ausgeleert und gespült werden. Ansonsten werden nur die Filter (12) oder (6) oder (7) unregelmäßig, je nach Verschmutzung, durch abspülen ge­ reinigt und wiederverwandt. Aus den seitlichen Öffnungen des Filterkorbes (5) tropft das Wasser, einen je nach Wasserstand kurzen oder längeren Weg in den Tank, wobei eine geringe Menge Sauerstoff aufgenommen werden kann um die Geruchsbelästigung zu mildern.Due to the calmed water flow, contaminants can sink to the bottom of the basket ( 5 ) and be drained via the outlet ( 2 ) with the stopper ( 8 ). The containers ( 5 ) and ( 10 ) can also be carried out in an environmentally friendly manner, without cleaning processes and, depending on the degree of contamination, emptied and rinsed approx. 1-4 times a year. Otherwise, only the filters ( 12 ) or ( 6 ) or ( 7 ) are cleaned irregularly, depending on the level of contamination, by rinsing and reused. The water drips from the side openings of the filter basket ( 5 ), depending on the water level, a short or long way into the tank, whereby a small amount of oxygen can be absorbed to reduce the unpleasant smell.

Die Wassermangelsicherung des Tanks besteht aus einem Schwimmer­ ventil (18) welches zwischen einer Dreibein-Halterung (19) be­ festigt ist und über eine Frischwasserleitung (4) unter Druck steht.The lack of water protection of the tank consists of a float valve ( 18 ) which is fastened between a tripod bracket ( 19 ) and is under pressure via a fresh water pipe ( 4 ).

Um die Wasserzirkulation im Tank zu beschleunigen wird das Über­ laufrohr (16) auf den Tankboden geführt. Hierdurch wird das Wasser im unteren Tankbereich, wo sich auch der Ansaugschlauch befindet, schneller ausgetauscht und die Geruchsbelästigung erheblich ge­ mildert.In order to accelerate the water circulation in the tank, the overflow pipe ( 16 ) is guided to the bottom of the tank. As a result, the water in the lower tank area, where the suction hose is located, is exchanged faster and the odor nuisance is considerably reduced.

Die Abwasserwärme von ca. 20°C ± kann durch eine handelsübliche Wasser-Wasser-Wärmepumpe genutzt werden. Der günstige Wirkungs­ grad dieser Kombination bedingt eine Energieersparnis von ca. 50% bei der Brauchwasserbereitung. Durch die gewendelte Leitung (3) fließt eine Flüssigkeit. Die die Leitung umgebende Wärme erhöht die Temperatur der Flüssigkeit. Diese Temperaturerhöhung wird von der Wärmepumpe zur ßrauchwasserbereitung genutzt. Das Brauchwasser fließt in den Tank zurück, wobei die Restwärme wiederverwendet wird.The waste water heat of approx. 20 ° C can be used by a commercially available water-water heat pump. The favorable efficiency of this combination results in an energy saving of approx. 50% in the preparation of domestic hot water. A liquid flows through the coiled line ( 3 ). The heat surrounding the line increases the temperature of the liquid. This increase in temperature is used by the heat pump for hot water preparation. The process water flows back into the tank, with the residual heat being reused.

Die Zeichnung ist im Maßstab 1 : 10, welches die Kompaktheit der Anlage verdeutlicht. Diese Größe der Anlage ist ausreichend bis zu einem 8 Fam.-Haus. Für größere Wohneinheiten werden die einzelnen Anlageteile vergrößert.The drawing is in 1:10 scale, which is the compactness of the Plant clarifies. This size of plant is sufficient up to an 8-family house. For larger housing units, the individual Plant parts enlarged.

BezugszeichenReference numerals

 1 Abfluß zum Kanal
 2 Reinigungsablauf des Filterbehälters
 3 Vor- und Rücklaufleitung für Wärmetransportflüssigkeit der Wärmepumpe
 4 Frischwasserzulauf für Wassermangelsicherung
 5 Filterkorb
 6 Feinfilter
 7 Feinfilter
 8 Heber für Reinigungsabflußstopfen
 9 Tankzuläufe aus Vorbehälter
10 Vorbehälter (Schwallbremse)
11 Heber für Reinigungsabflußstopfen
12 Grobfilter mit 2 Haltern
13 Reinigungsablauf des Vorbehälters
14 Saugleitung mit flexiblem Saugschlauch
15 Abwasserzulauf
16 Überlauf
17 Abstandhalter
18 Schwimmerventil für Wassermangelsicherung
19 Dreibeinständer für Schwimmerventil 18
20 Kunststofftank 1 drain to the canal
2 Cleaning process of the filter container
3 supply and return line for heat transfer fluid of the heat pump
4 Fresh water inlet for water shortage protection
5 filter basket
6 fine filters
7 fine filters
8 lifters for cleaning drain plugs
9 tank inlets from the primary tank
10 primary tank (surge brake)
11 Lifter for cleaning drain plugs
12 coarse filters with 2 holders
13 Cleaning process of the preliminary container
14 Suction line with flexible suction hose
15 wastewater inlet
16 overflow
17 spacers
18 Float valve for low water protection
19 tripod stand for float valve 18
20 plastic tank

Claims (5)

1. Kompaktanlage zur Aufbereitung von Abwasser aus dem Bade­ bereich und von Waschmaschinen, mit Wassermangelsicherung. Zur Wiederverwendung durch handelsübliche Druckpumpenanlage in Toilettenspülkästen und zur Reinigung. Die Nutzung der Abwärme mittels handelsüblicher Wasser-Wasser-Wärmepumpe zur Brauchwasserbereitung, dadurch gekennzeichnet, daß ein Behälter zur Schwallbremse und Grobreinigung, dem Abwasser­ tank vorgeschaltet ist.1. Compact system for the treatment of wastewater from the bathing area and of washing machines, with low water protection. For reuse by standard pressure pump systems in toilet cisterns and for cleaning. The use of the waste heat by means of a commercially available water-water heat pump for domestic water preparation, characterized in that a container for surge protection and rough cleaning is connected upstream of the waste water tank. 2. Anlage nach Anspruch 1 dadurch gekennzeichnet, daß ein Kompaktfilter mit zwei Filtereinsätzen und Reinigungsablauf direkt auf dem Tank eingebaut und so ausgebildet ist daß das abtropfende Wasser wieder Sauerstoff aufnehmen kann und somit die Geruchsbelästigung gemildert wird.2. Plant according to claim 1, characterized in that a Compact filter with two filter inserts and cleaning process installed directly on the tank and designed so that dripping water can absorb oxygen again and thus the odor nuisance is alleviated. 3. Anlage nach Anspruch 12 dadurch gekennzeichnet, daß im Tank eine Wassermangelsicherung, mittels Schwimmerventil ein­ gebaut ist.3. Plant according to claim 12, characterized in that in Tank a low water indicator, using a float valve is built. 4. Anlage nach Anspruch 1-3 dadurch gekennzeichnet, daß der Tanküberlauf auf den Tankboden geführt wird und somit der Wasserkreislauf beschleunigt und die Geruchsbelästigung gemildert wird.4. Plant according to claims 1-3, characterized in that the Tank overflow is led to the tank bottom and thus the Water cycle accelerates and the smell nuisance is mitigated. 5. Anlage nach Anspruch 1-4 dadurch gekennzeichnet, daß die vorhandene Abwasserwärme mittels einer handelsüblichen Wasser -Wasser-Wärmepumpe zur Brauchwasserbereitung genutzt wird.5. Plant according to claim 1-4, characterized in that the existing waste water heat using a commercially available water -Water heat pump is used for hot water preparation.
DE4005577A 1990-02-22 1990-02-22 Bath drain-water processing unit - has surge-arresting and initial-cleaning vessel upstream of tank Ceased DE4005577A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE4005577A DE4005577A1 (en) 1990-02-22 1990-02-22 Bath drain-water processing unit - has surge-arresting and initial-cleaning vessel upstream of tank

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE4005577A DE4005577A1 (en) 1990-02-22 1990-02-22 Bath drain-water processing unit - has surge-arresting and initial-cleaning vessel upstream of tank

Publications (1)

Publication Number Publication Date
DE4005577A1 true DE4005577A1 (en) 1991-08-29

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Family Applications (1)

Application Number Title Priority Date Filing Date
DE4005577A Ceased DE4005577A1 (en) 1990-02-22 1990-02-22 Bath drain-water processing unit - has surge-arresting and initial-cleaning vessel upstream of tank

Country Status (1)

Country Link
DE (1) DE4005577A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5251346A (en) * 1992-11-19 1993-10-12 Donati William R Water recycling device for flush toilet use
EP1724531A1 (en) * 2005-05-04 2006-11-22 Armines System and method for heating sanitary hot water using residual heat of waste water
NL2028220B1 (en) * 2021-05-17 2022-12-02 Dewarmte B V A thermal energy recovery system and house or building equipped with such a thermal energy recovering system

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2710617A1 (en) * 1977-03-11 1978-09-14 Hermann Schaefer Combined flushing and rain water collection vessel - uses water from bath and washing machine to save using fresh water
DE2908679A1 (en) * 1979-03-06 1980-09-18 Bosch Gmbh Robert Drain water reuse system for toilet flushing - has fresh water stop valve controlled by level indicator (NL 9.9.80)
DE2917987A1 (en) * 1979-05-04 1980-11-13 Dieter Edelbert Mail Domestic heat-recovery system - has vessel retaining warm drain water and heat pump supplying washing-water vessel
DE3205770A1 (en) * 1982-02-18 1983-08-25 Horst 7900 Ulm Glaser Method for reducing the water consumption of households with WCs in detached or multiple-dwelling houses
DE3338189A1 (en) * 1983-10-20 1985-06-05 Walter Neukirchen Kroll METHOD FOR RECOVERING HEAT FROM WASTEWATER WITH SIMULTANEOUS DRINKING WATER SAVING
DE3500130A1 (en) * 1985-01-04 1986-07-10 Peter Wülfing GmbH, 5600 Wuppertal Drainage-water-utilising installation
DE3712421A1 (en) * 1987-04-10 1988-10-20 Harald Kraft Apparatus for substituting drinking water for the purpose of toilet flushing
DE3717963A1 (en) * 1987-05-27 1988-12-08 Dietmar Dipl Ing Racho System for returning waste water

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2710617A1 (en) * 1977-03-11 1978-09-14 Hermann Schaefer Combined flushing and rain water collection vessel - uses water from bath and washing machine to save using fresh water
DE2908679A1 (en) * 1979-03-06 1980-09-18 Bosch Gmbh Robert Drain water reuse system for toilet flushing - has fresh water stop valve controlled by level indicator (NL 9.9.80)
DE2917987A1 (en) * 1979-05-04 1980-11-13 Dieter Edelbert Mail Domestic heat-recovery system - has vessel retaining warm drain water and heat pump supplying washing-water vessel
DE3205770A1 (en) * 1982-02-18 1983-08-25 Horst 7900 Ulm Glaser Method for reducing the water consumption of households with WCs in detached or multiple-dwelling houses
DE3338189A1 (en) * 1983-10-20 1985-06-05 Walter Neukirchen Kroll METHOD FOR RECOVERING HEAT FROM WASTEWATER WITH SIMULTANEOUS DRINKING WATER SAVING
DE3500130A1 (en) * 1985-01-04 1986-07-10 Peter Wülfing GmbH, 5600 Wuppertal Drainage-water-utilising installation
DE3712421A1 (en) * 1987-04-10 1988-10-20 Harald Kraft Apparatus for substituting drinking water for the purpose of toilet flushing
DE3717963A1 (en) * 1987-05-27 1988-12-08 Dietmar Dipl Ing Racho System for returning waste water
DE8717458U1 (en) * 1987-05-27 1989-02-23 Racho, Dietmar, Dipl.-Ing., 5860 Iserlohn Device for wastewater recirculation

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5251346A (en) * 1992-11-19 1993-10-12 Donati William R Water recycling device for flush toilet use
WO1994010892A1 (en) * 1992-11-19 1994-05-26 Donati William R Water recycling device for flush toilet use
US5406657A (en) * 1992-11-19 1995-04-18 Donati; William R. Water recycling device for flush toilet use
EP1724531A1 (en) * 2005-05-04 2006-11-22 Armines System and method for heating sanitary hot water using residual heat of waste water
NL2028220B1 (en) * 2021-05-17 2022-12-02 Dewarmte B V A thermal energy recovery system and house or building equipped with such a thermal energy recovering system

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