WO1987001108A1 - Water-softening system and process for operating latter - Google Patents

Water-softening system and process for operating latter Download PDF

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Publication number
WO1987001108A1
WO1987001108A1 PCT/CH1986/000120 CH8600120W WO8701108A1 WO 1987001108 A1 WO1987001108 A1 WO 1987001108A1 CH 8600120 W CH8600120 W CH 8600120W WO 8701108 A1 WO8701108 A1 WO 8701108A1
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WO
WIPO (PCT)
Prior art keywords
container
water
plates
softened
deposits
Prior art date
Application number
PCT/CH1986/000120
Other languages
German (de)
French (fr)
Inventor
Hans LÜBER
Original Assignee
Lueber Hans
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 Lueber Hans filed Critical Lueber Hans
Publication of WO1987001108A1 publication Critical patent/WO1987001108A1/en

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Classifications

    • 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
    • C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
    • C02F1/4602—Treatment of water, waste water, or sewage by electrochemical methods for prevention or elimination of deposits
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2201/00—Apparatus for treatment of water, waste water or sewage
    • C02F2201/46—Apparatus for electrochemical processes
    • C02F2201/461—Electrolysis apparatus
    • C02F2201/46105—Details relating to the electrolytic devices
    • C02F2201/4612—Controlling or monitoring
    • C02F2201/46125—Electrical variables
    • C02F2201/4613—Inversing polarity

Definitions

  • the invention relates to a device according to the preamble of independent claim 1 and a method for operating this device.
  • precipitation and exchange processes are well known and have been in use for a long time to remove hardness constituents of the raw water, that is to say mainly calcium and magnesium salts.
  • the disadvantage of the precipitation processes is that large quantities of chemicals have to be used, which is expensive and pollutes the environment. Chemicals must also be used in the exchange process. In addition, the systems used here must be regenerated periodically.
  • this object is achieved by the features of the characterizing part of claim 1.
  • the device requires only little energy for its operation and is therefore very inexpensive to maintain.
  • the device can be operated completely automatically for a long time.
  • FIG. 1 is a schematic view, partly in section, of a device according to the invention
  • REPLACEMENT LEAF Fig. 2 is an electrical circuit diagram
  • FIG. 3 corresponding to Fig. 1, another embodiment.
  • the container 3 consists of stainless steel with a plastic coating on the inside. Its upper part is cuboid and closed. At the bottom it continues on three quarters of the base area as a truncated pyramid which opens into a drain pipe 15 with a drainage valve 11.
  • the container 3 is divided into two zones by a fine-meshed sieve 4.
  • An inlet pipe 1 for the water to be softened leads into the one zone, which comprises the drain pipe 15.
  • a siphon 5 with an outlet opening 6. Through this the softened water leaves the device and is supplied to the consumer.
  • the sieve 4 is mounted in the container 3 such that the water flowing through it has to pass through it.
  • the part of the device which softens the water consists of an even number of highly polished and stainless steel plates 8 and 8'.
  • the smoothness of the surfaces of the plates 8 and 8 ' is advantageous for the functioning of the device and can be achieved, for example, by bright annealing.
  • the plates 8 and 8 ' are firmly connected to one another by electrically non-conductive holders 7 and suspended from supports 2.
  • the carrier 2 are also made of electrical insulating material. If you think of the plates numbered one after the other, all of them with an even number and all with an odd number are each connected by a current conductor 12 or 12 '.
  • the two current conductors 12 and 12 ' are routed to the output terminals of a pole-reversal switch 13.
  • a DC source 14 the voltage of which can be varied from 0-10 volts, is connected to the input terminals of the pole-reversal switch 13.
  • the water flowing into the container through the inlet pipe 1 is preferably enriched with magnesium. This can be achieved in a manner known per se by galvanic means.
  • a device of this type is known under the name "Hydrocleaner”.
  • the water is softened. In this case, a deposit 10 is formed on those plates which are located at the positive pole of the direct current source 14, which deposit consists largely of lime.
  • the plates on the negative pole remain blank during this time. After leaving the plates 8 or 8 ', the softened water first passes through the sieve 4 before it leaves the system via the siphon 5.
  • the total surface of the plates 8 and 8 ', their distance from one another and the value of the applied voltage depend on the intended flow, the hardness of the inflowing water and the hardness of the outflowing water.
  • the device can be automatically controlled by specifying a setpoint for the conductivity of the emerging water and comparing it with the current conductivity of the water.
  • the voltage of the direct current source 14 can be selected as the manipulated variable.
  • the efficiency of the device decreases over time. If the polarity of the voltage applied to the plates 8 or 8 'is reversed with the aid of the pole-reversal switch 13, the deposit 10 breaks open and crumbles after a short time, a new deposit being simultaneously present on the other plates 8' and 8 builds up.
  • a sieve is unnecessary.
  • the untreated water is introduced through a pipe 25 with an inlet opening 16 into the lower part of the container 3.
  • the pressurized water is fed through a pipe 21 in the upper part of the container 3.
  • the flow rate is set depending on the hardness of the water to be treated. Since the deposits on the plates are more specific than water and therefore sink downwards, they do not get into the pipe 21.
  • the pipe system 31 is attached, which has a plurality of lateral openings 32 and which can be introduced through an opening 30 into air or another suitable gas.
  • the openings 32 are formed in such a way that fine bubbles form when a gas is introduced and flow upwards.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Organic Chemistry (AREA)
  • Water Treatment By Electricity Or Magnetism (AREA)

Abstract

Container (3) open at the top, in which are arranged a number of steel plates (8, 8') having a highly-polished surface. A finely-meshed sieve (4) divides the container (3) into two regions. Opening into one region is an inlet pipe (1) for the water which is to be softened. Leading from the other region is a siphon (5) through which the softened water is supplied to the user. The plates (8, 8') which are electrically isolated can each be connected alternately with the pole of a d.c. power supply. The water is softened by flowing through the plates (8, 8'), which form a series of galvanic elements. As a result, layered deposits (10) which consist essentially of lime form on those plates (8 or 8') which are connected to the positive pole of the d.c. supply. When the voltage applied is reversed, the deposits (10) break up and crumble. The deposits which collect on the floor of the container (3) are removed by opening a clarification valve (11).

Description

Einrichtung zum Enthärten von Wasser und Verfahren zum Betrieb der EinrichtungWater softening device and method of operating the device
Die Erfindung betrifft eine Einrichtung nach dem Oberbegriff des unabhängigen Anspruchs 1 sowie ein Verfahren zum Betrieb dieser Einrichtung.The invention relates to a device according to the preamble of independent claim 1 and a method for operating this device.
Zum Entfernen von Härtebildnern des Rohwassers, also haupt¬ sächlich Calcium- und Magnesiumsalze, sind mehrere Fällungs¬ und Austauschverfahren gut bekannt und seit langem in Ge¬ brauch. Die Fällungsverfahren haben den Nachteil, dass grosse Mengen an Chemikalien eingesetzt werden müssen, was teuer ist und die Umwelt belastet. Auch bei den Austauschverfahren müssen Chemikalien eingesetzt werden. Zudem müssen die hier verwendeten Anlagen periodisch regeneriert werden.Several precipitation and exchange processes are well known and have been in use for a long time to remove hardness constituents of the raw water, that is to say mainly calcium and magnesium salts. The disadvantage of the precipitation processes is that large quantities of chemicals have to be used, which is expensive and pollutes the environment. Chemicals must also be used in the exchange process. In addition, the systems used here must be regenerated periodically.
Es ist deshalb Aufgabe der Erfindung, eine Einrichtung zu schaffen, die diese Nachteile vermeidet.It is therefore an object of the invention to provide a device which avoids these disadvantages.
Diese Aufgabe wird erfindungsgemäss durch die Merkmale des Kennzeichens des Anspruchs 1 gelöst. Die Einrichtung be¬ nötigt für ihren Betrieb nur wenig Energie und ist deshalb im Unterhalt sehr kostengünstig. Die Einrichtung kann lange Zeit vollständig automatisch betrieben werden.According to the invention, this object is achieved by the features of the characterizing part of claim 1. The device requires only little energy for its operation and is therefore very inexpensive to maintain. The device can be operated completely automatically for a long time.
Weitere vorteilhafte Ausbildungen ergeben sich aus den ab¬ hängigen Ansprüchen.Further advantageous developments result from the dependent claims.
Ausführungsbeispiele der Erfindung werden nachfolgend an¬ hand der Zeichnung näher erläutert. Es zeigen:Exemplary embodiments of the invention are explained in more detail below with reference to the drawing. Show it:
Fig. 1 eine teilweise im Schnitt gezeigte schematische Ansicht einer erfindungsgemässen Einrichtung,1 is a schematic view, partly in section, of a device according to the invention,
ERSATZBLATT Fig. 2 ein elektrisches Schaltschema undREPLACEMENT LEAF Fig. 2 is an electrical circuit diagram and
Fig. 3 entsprechend Fig. 1 ein weiteres Ausfürungsbeispiel.Fig. 3 corresponding to Fig. 1, another embodiment.
Der Behälter 3 besteht aus rostfreiem innenseitig kunststoff¬ beschichtetem Stahl. Sein oberer Teil ist quaderförmig und geschlossen. Unten setzt er sich auf drei Viertel der Grund¬ fläche als Pyramiedenstumpf fort, welcher in ein Abfluss¬ rohr 15 mit einem Abschlämmventiel 11 mündet. Durch ein fein¬ maschiges Sieb 4 wird der Behälter 3 in zwei -Zonen unter¬ teilt. In die eine Zone, welche das Abflussrohr 15 umfasst, führt ein Einlaufröhr 1 für das zu enthärtende Wasser. In der anderen Zone befindet sich ein Siphon 5 mit einer Aus¬ lauföffnung 6. Durch diese verlässt das enthärtete Wasser die Einrichtung und wird dem Verbraucher zugeführt. Das Sieb 4 ist derart im Behälter 3 angebracht, dass das durchflies¬ sende Wasser diese passieren muss .The container 3 consists of stainless steel with a plastic coating on the inside. Its upper part is cuboid and closed. At the bottom it continues on three quarters of the base area as a truncated pyramid which opens into a drain pipe 15 with a drainage valve 11. The container 3 is divided into two zones by a fine-meshed sieve 4. An inlet pipe 1 for the water to be softened leads into the one zone, which comprises the drain pipe 15. In the other zone there is a siphon 5 with an outlet opening 6. Through this the softened water leaves the device and is supplied to the consumer. The sieve 4 is mounted in the container 3 such that the water flowing through it has to pass through it.
'Der Teil der Einrichtung, welcher das Wasser enthärtet, be¬ steht aus einer geraden Anzahl hochpolierter und rostfreier Stahlplatten 8 bzw 8'. Die Glätte der Oberflächen der Platten 8 bzw 8' ist für das Funktionieren der Einrichtung vorteil¬ haft und kann beispielsweise durch Blankglühen erreicht werden. Die Platten 8 bzw 8'sind durch elektrisch nicht¬ leitende Halterungen 7 fest miteinander verbunden und an Trägern 2 aufgehängt. Die Träger 2 sind ebenfalls aus elektrischem Isoliermaterial. Denk man sich die Platten der Reihe nach nummeriert, so sind alle mit gerader Nummer und alle mit ungerader Nummmer je durch einen Stromleiter 12 bzw 12' verbunden. Die beiden Stromleiter 12 bzw 12' werden auf die Ausgangsklemmmen eines Umpolschalters 13 geführt. An den Eingangsklemmen des Umpolschalters 13 ist eine Gleichstrom¬ quelle 14 angeschlossen, deren Spannung von 0-10 Volt vari¬ iert werden kann. ' The part of the device which softens the water consists of an even number of highly polished and stainless steel plates 8 and 8'. The smoothness of the surfaces of the plates 8 and 8 'is advantageous for the functioning of the device and can be achieved, for example, by bright annealing. The plates 8 and 8 'are firmly connected to one another by electrically non-conductive holders 7 and suspended from supports 2. The carrier 2 are also made of electrical insulating material. If you think of the plates numbered one after the other, all of them with an even number and all with an odd number are each connected by a current conductor 12 or 12 '. The two current conductors 12 and 12 'are routed to the output terminals of a pole-reversal switch 13. A DC source 14, the voltage of which can be varied from 0-10 volts, is connected to the input terminals of the pole-reversal switch 13.
ERSATZBLATT Das durch das Einlaufrohr 1 in den Behälter einströmende Wasser ist vorzugsweise mit Magnesium angereichert. Dies kann in an sich bekannter Weise auf galvanischem Weg er¬ reicht werden. Eine Vorrichtung dieser Art ist unter dem Namen "Hydrocleaner" bekannt. Beim Durchströmen der Platten 8 bzw 8', die eine Reihe von galvanischen Elementen bilden, wird das Wasser enthärtet. Dabei bilden sich an jenen Platten, die am positiven Pol der Gleichstromquelle 14 liegen, eine Ablagerung 10, die grossenteils aus Kalk be¬ steht. Die Platten, die am negativen Pol liegen, bleiben während dieser Zeit blank. Nach dem Austritt aus den Platten 8 bzw 8' passiert das enthärtete Wasser zuerst das Sieb 4, bevor es über den Siphon 5 die Anlage verlässt.REPLACEMENT LEAF The water flowing into the container through the inlet pipe 1 is preferably enriched with magnesium. This can be achieved in a manner known per se by galvanic means. A device of this type is known under the name "Hydrocleaner". When flowing through the plates 8 and 8 ', which form a series of galvanic elements, the water is softened. In this case, a deposit 10 is formed on those plates which are located at the positive pole of the direct current source 14, which deposit consists largely of lime. The plates on the negative pole remain blank during this time. After leaving the plates 8 or 8 ', the softened water first passes through the sieve 4 before it leaves the system via the siphon 5.
Die Gesamtoberfläche der Platten 8 bzw 8', deren Abstand voneinander und der Wert der angelegten Spannung richten sich nach dem vorgesehenen Durchfluss, die Härte des ein¬ strömenden Wassers und die Härte des ausströmenden Wassers. Prinzipiell kann die Einrichtung durch die Vorgabe eines Sollwerts für die Leitfähigkeit des austretenden Wassers und dessen Vergleich mit der aktuellen Leitfähigkeit des Wassers automatisch geregelt werden. Als Stellgrösse kann die Spannung der Gleichstromquelle 14 gewählt werden.The total surface of the plates 8 and 8 ', their distance from one another and the value of the applied voltage depend on the intended flow, the hardness of the inflowing water and the hardness of the outflowing water. In principle, the device can be automatically controlled by specifying a setpoint for the conductivity of the emerging water and comparing it with the current conductivity of the water. The voltage of the direct current source 14 can be selected as the manipulated variable.
Da mit der Fortdauer des Betriebs die Ablagerung 10 auf den am positiven Pol liegenden Platten immer dicker wird, sinkt der Wirkungsgrad der Einrichtung mit der Zeit. Polt man nun die an den Platten 8 bzw 8'angelegte Spannung mit Hilfe des Umpolschalters 13 um, so bricht die Ablagerung 10 auf und bröckelt nach kurzer Zeit ab, wobei sich gleich¬ zeitig auf den anderen Platten 8' bzw 8 eine neue Ablager¬ ung aufbaut.As the deposit 10 on the plates located at the positive pole becomes thicker as the operation continues, the efficiency of the device decreases over time. If the polarity of the voltage applied to the plates 8 or 8 'is reversed with the aid of the pole-reversal switch 13, the deposit 10 breaks open and crumbles after a short time, a new deposit being simultaneously present on the other plates 8' and 8 builds up.
ERSATZBLATT Der ausgeschiedene Kalk sowie eventuell andere ausgeschiedene Stoffe werden durch das Sieb 4 am Austreten durch den Siphon 5 gehindert und setzen sich im unteren Teil des Behälters 3 ab. Die Ablagerungen werden von Zeit zu Zeit durch Oeffnen des Abschlämmventiels 11 aus der Einrichtung entfernt.REPLACEMENT LEAF The excreted lime and any other excreted substances are prevented by the sieve 4 from escaping through the siphon 5 and settle in the lower part of the container 3. The deposits are removed from the device from time to time by opening the blowdown valve 11.
Bei dem Ausführungsbeispiel nach Figur 3 ist ein Sieb ent¬ behrlich. Das unbehandelte Wasser wird durch ein Rohr 25 mit einer EinlaufÖffnung 16 in den unteren Teil des Behälters 3 eingebracht. Das unter Druck stehende Wassser wird im oberen Teil des Behälters 3 durch ein Rohr 21 zugeführt. Die Durchströmgeschwindigkeit wird je nach Härte des zu be¬ handelnden Wassers eingestellt. Da die Abscheidungen an den Platten speziefisch schwrer sind als Wasser und deshalb nach unten sinken, gelangen diese nicht in das Rohr 21.In the embodiment according to FIG. 3, a sieve is unnecessary. The untreated water is introduced through a pipe 25 with an inlet opening 16 into the lower part of the container 3. The pressurized water is fed through a pipe 21 in the upper part of the container 3. The flow rate is set depending on the hardness of the water to be treated. Since the deposits on the plates are more specific than water and therefore sink downwards, they do not get into the pipe 21.
Im unteren Teil des Behälters 3 ist das Rohrsystem 31 an¬ gebracht, das mehrere seitliche Oeffnungen 32 aufweist und das durch eine Oeffnung 30 Luft oder ein anderes geeignetes Gas eingeleitet werden kann. Die Oefnungen 32 sind so aus¬ gebildet, dass sich beim Einleiten eines Gases feine Blasen bilden, die nach oben strömen. Versuche haben gezeigt, dass durch Einleiten von Luft die Leistung der Einrichtung wesentlich gesteigert werden kann. Es hat sich auch gezeigt, dass die Leistung bei einem Plattenabstand von etwa 8 mm am grössten ist. Die Spannung an den Platten beträgt vor¬ zugsweise 7-8 Volt.In the lower part of the container 3, the pipe system 31 is attached, which has a plurality of lateral openings 32 and which can be introduced through an opening 30 into air or another suitable gas. The openings 32 are formed in such a way that fine bubbles form when a gas is introduced and flow upwards. Experiments have shown that the performance of the device can be significantly increased by introducing air. It has also been shown that the performance is greatest with a plate spacing of about 8 mm. The voltage on the plates is preferably 7-8 volts.
ERSATZBLATT REPLACEMENT LEAF

Claims

Patentansprüche Claims
1. Einrichtung zum Enthärten von Wasser, mit einem Behälter (3), der einen Einlauf (1) für das zu enthärtende Wasser und einen Auslauf (5) für das behandelte Wasser aufweist, gekennzeichnet durch eine dem Behälter (3) vorgeschaltete an sich be¬ kannte Vorrichtung zur Anreicherung des zu ent¬ härtenden Wassers vorzugsweise mit Magnesium sowie wenigstens zwei im Behälter ( 4 ) angeordnete voneinander isolierte elektrisch leitende, mit einer Gleichstromspannungsquelle ( 14 ) verbundene Körper (8,8') zum Abscheiden von Stoffen auf deren Oberflächen.1. Device for softening water, with a container (3) having an inlet (1) for the water to be softened and an outlet (5) for the treated water, characterized by a container (3) upstream of itself ¬ Known device for enriching the water to be softened, preferably with magnesium, and at least two electrically conductive bodies (8, 8 ') arranged in the container (4) and insulated from one another and connected to a DC voltage source (14) for separating substances from their surfaces.
2. Einrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die Körper hochglanzpolierte Metallplatten (8,8') sind.2. Device according to claim 1, characterized in that the bodies are highly polished metal plates (8,8 ').
3. Einrich.tung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass im Behälter (3) ein Sieb (4) angeordnet ist, das den Auslauf (5) von den Körpern trennt.3. Einrich.tung according to claim 1 or 2, characterized in that in the container (3) a sieve (4) is arranged which separates the outlet (5) from the bodies.
4. Einrichtung nach einem der Ansprüche 1 bis 3, dadurch geknnzeichnet, dass im Boden des Behälters (1) ein Abschlämmventil (11) angebracht ist.4. Device according to one of claims 1 to 3, characterized in that a drain valve (11) is attached in the bottom of the container (1).
5. Einrichtung nach Anspruch 1 oder 2, dadurch gekennzei¬ chnet, dass im Behälter (3) eine Vorrichtung (30, 31, 32) zum feinbalsigen Einleiten eines Gases angebracht ist.5. Device according to claim 1 or 2, characterized gekennzei¬ chnet that in the container (3) a device (30, 31, 32) is attached for the fine-balsled introduction of a gas.
ERS TZB ERS TZB
6. Verfahren zum Betrieb der Einrichtung gemäss einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass die Gleichspannungsquelle (14) jeweils nach einem Zeit¬ intervall umgeschaltet wird.6. The method for operating the device according to one of claims 1 to 5, characterized in that the DC voltage source (14) is switched over after a time interval.
7. Verfahren nach Anspruch 6, dadurch gekennzeichnet, dass durch eine Vorgabe eines Sollwerts für die Leitfähigkeit des austretenden Wassers und deren Vergleich mit der aktuellen Leitfähigkeit die Spannung der Gleichstromspan¬ nungsquelle (14) automatisch geregelt wird.7. The method according to claim 6, characterized in that the voltage of the direct current voltage source (14) is automatically regulated by specifying a setpoint for the conductivity of the escaping water and comparing it with the current conductivity.
8. Verfahren nach Anspruch 7, dadurch gekennzeichnet, dass Spannung von 0-10 Volt variiert wird.8. The method according to claim 7, characterized in that voltage is varied from 0-10 volts.
9. Verfahren nach einem der Ansprüche 6-8, dadurch gekenn¬ zeichnet, dass im unteren Teil des Behälters (3) Luft feinblasig eingeleitet wird.9. The method according to any one of claims 6-8, characterized gekenn¬ characterized in that air is introduced in fine bubbles in the lower part of the container (3).
10. Verfahren nach einem der Ansprüche 6-9, dadurch gekenn¬ zeichnet, dass das zu behandelnde Wasser im unteren Teil des Behälters ( 3 ) eingeleitet und das behandelte Wasser im oberen Teil des Behälters entnommen wird.10. The method according to any one of claims 6-9, characterized gekenn¬ characterized in that the water to be treated is introduced in the lower part of the container (3) and the treated water is removed in the upper part of the container.
ERSATZBLATT REPLACEMENT LEAF
PCT/CH1986/000120 1985-08-22 1986-08-20 Water-softening system and process for operating latter WO1987001108A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH372785 1985-08-22
CH3727/85-4 1985-08-22

Publications (1)

Publication Number Publication Date
WO1987001108A1 true WO1987001108A1 (en) 1987-02-26

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WO (1) WO1987001108A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0377411A2 (en) * 1989-01-04 1990-07-11 Hans LÜBER Method and apparatus for fresh water demineralisation by electrolysis
FR2731420A1 (en) * 1995-03-10 1996-09-13 Mercier Dominique METHOD AND DEVICE FOR TREATING WATER WITH A VIEW TO SOFTENING ELECTROCHEMICALLY
US11827542B2 (en) 2018-06-05 2023-11-28 The Regents Of The University Of California Buffer-free process cycle for CO2 sequestration and carbonate production from brine waste streams with high salinity
US11920246B2 (en) * 2021-10-18 2024-03-05 The Regents Of The University Of California Seawater electrolysis enables Mg(OH)2 production and CO2 mineralization

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Publication number Priority date Publication date Assignee Title
DE289814C (en) *
FR448386A (en) * 1912-09-17 1913-01-29 Claude Achille Meygret Water decalcification process
FR552375A (en) * 1922-03-24 1923-04-30
GB610725A (en) * 1942-11-09 1948-10-20 Alfred Guldager A method of treating feed water for steam boilers
US2681885A (en) * 1950-05-24 1954-06-22 Robert E Briggs Electrolytic method for treating water
FR1537393A (en) * 1967-09-15 1968-08-23 Water conditioning method and apparatus
FR2138310A1 (en) * 1971-05-24 1973-01-05 Herbert Jean Jacques
FR1605304A (en) * 1960-12-14 1974-08-02 Electrode device for treating water contg. lime - to prevent scale formation

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE289814C (en) *
FR448386A (en) * 1912-09-17 1913-01-29 Claude Achille Meygret Water decalcification process
FR552375A (en) * 1922-03-24 1923-04-30
GB610725A (en) * 1942-11-09 1948-10-20 Alfred Guldager A method of treating feed water for steam boilers
US2681885A (en) * 1950-05-24 1954-06-22 Robert E Briggs Electrolytic method for treating water
FR1605304A (en) * 1960-12-14 1974-08-02 Electrode device for treating water contg. lime - to prevent scale formation
FR1537393A (en) * 1967-09-15 1968-08-23 Water conditioning method and apparatus
FR2138310A1 (en) * 1971-05-24 1973-01-05 Herbert Jean Jacques

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0377411A2 (en) * 1989-01-04 1990-07-11 Hans LÜBER Method and apparatus for fresh water demineralisation by electrolysis
EP0377411A3 (en) * 1989-01-04 1990-10-03 Hans Luber Method and apparatus for fresh water demineralisation by electrolysis
FR2731420A1 (en) * 1995-03-10 1996-09-13 Mercier Dominique METHOD AND DEVICE FOR TREATING WATER WITH A VIEW TO SOFTENING ELECTROCHEMICALLY
WO1996028389A1 (en) * 1995-03-10 1996-09-19 Dominique Mercier Electrochemical treatment method and device for softening water
US5897765A (en) * 1995-03-10 1999-04-27 Mercier; Dominique Electrochemical treatment method and device for softening water
AU707432B2 (en) * 1995-03-10 1999-07-08 Dominique Mercier Electrochemical treatment method and device for softening water
US11827542B2 (en) 2018-06-05 2023-11-28 The Regents Of The University Of California Buffer-free process cycle for CO2 sequestration and carbonate production from brine waste streams with high salinity
US11920246B2 (en) * 2021-10-18 2024-03-05 The Regents Of The University Of California Seawater electrolysis enables Mg(OH)2 production and CO2 mineralization

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