DE3121337A1 - Filter installation - Google Patents

Filter installation

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Publication number
DE3121337A1
DE3121337A1 DE19813121337 DE3121337A DE3121337A1 DE 3121337 A1 DE3121337 A1 DE 3121337A1 DE 19813121337 DE19813121337 DE 19813121337 DE 3121337 A DE3121337 A DE 3121337A DE 3121337 A1 DE3121337 A1 DE 3121337A1
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DE
Germany
Prior art keywords
filter
filter system
electrolytic cell
waterway
designed
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.)
Withdrawn
Application number
DE19813121337
Other languages
German (de)
Inventor
Jochen Dr. 8720 Schweinfurt Kassner
Karl-Heinz Dipl.-Chem. Dr. 8721 Dittelbrunn Ognibeni
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.)
ZF Sachs AG
Original Assignee
Fichtel and Sachs AG
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 Fichtel and Sachs AG filed Critical Fichtel and Sachs AG
Priority to DE19813121337 priority Critical patent/DE3121337A1/en
Publication of DE3121337A1 publication Critical patent/DE3121337A1/en
Withdrawn legal-status Critical Current

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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
    • C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
    • C02F1/467—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrochemical disinfection; by electrooxydation or by electroreduction
    • C02F1/4672—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrochemical disinfection; by electrooxydation or by electroreduction by electrooxydation
    • C02F1/4674—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrochemical disinfection; by electrooxydation or by electroreduction by electrooxydation with halogen or compound of halogens, e.g. chlorine, bromine

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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)
  • Separation Using Semi-Permeable Membranes (AREA)
  • Water Treatment By Sorption (AREA)

Abstract

The filter installation comprises a filter (9) which, in particular, is designed as a membrane filter and which is fed with the raw water via an electrolytic flow cell (5). The electrolytic cell (5), whose electrodes are connected to a current source (11), generates, from chloride ions of the raw water, a disinfectant on the basis of a chlorine-oxygen compound and/or an active-oxygen compound, which disinfects the raw-water side of the filter (9). <IMAGE>

Description

Filteranlage Filter system

Die Erfindung betrifft eine Filteranlage mit einem Filter zur Reinigung von wässrigen Lösungen.The invention relates to a filter system with a filter for cleaning of aqueous solutions.

Derartige Filteranlagen werden zur mechanischen Reinigung von Trinkwasser, aber auch von Galvanikabwässern, Brauereiabwässern, Abwässern aus Emulsionsspaltungseinrichtungen usw.Such filter systems are used for mechanical cleaning of drinking water, but also from electroplating wastewater, brewery wastewater, wastewater from emulsion splitting facilities etc.

eingesetzt. Ein Problem derartiger Filteranlagen ist die Verkeimung der Rohwasserseite des Filters, was selbst bei engporigen und normalerweise bakterienzurückhaltenden Filtern nach längerer Betriebszeit zum Durchwachsen von Bakterien durch das Filter und damit zur Kontamination des Reinwassers führt.used. One problem with such filter systems is contamination the raw water side of the filter, even with narrow-pored and normally bacteria-retardant Filter after a long period of operation to allow bacteria to grow through the filter and thus leads to contamination of the pure water.

Aufgabe der Erfindung ist es, die Filteranlage auf konstruktiv einfache Weise so zu verbessern, daß dessen Rohwasserseite kontinuierlich desinfiziert werden kann.The object of the invention is to make the filter system structurally simple Way to improve so that its raw water side are continuously disinfected can.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß dem Filter eine Durchfluß-Elektrolysezelle, deren Elektroden an eine Stromquelle angeschlossen sind, in der Weise vorgeschaltet ist, daß zumindest ein Teil des dem Filter zugeführten Wassers durch die Elektrolysezelle strömt.This object is achieved according to the invention in that the filter a flow-through electrolysis cell, the electrodes of which are connected to a power source are, is connected upstream in such a way that at least part of the fed to the filter Water flows through the electrolytic cell.

Die Elektrolysezelle erzeugt auf der Rohwasserseite kontinuierlich Desinfektionsmittel auf der Basis von Chlor-Sauerstoff-Verbindungen, insbesondere freies, wirksames Chlor, z.B. HOCl, OCl oder Cl2 und/oder Aktivsauerstoffverbindungen bzw. freien wirksamen Sauerstoff.The electrolysis cell generates continuously on the raw water side Disinfectants based on chlorine-oxygen compounds, in particular free, effective chlorine, e.g. HOCl, OCl or Cl2 and / or active oxygen compounds or free effective oxygen.

Die mittels der Elektrolysezelle hergestellten Desinfektionsmittel reichen vielfach bereits zur Keimfreimachung der Rohwasserseite bzw. der Filteroberfläche aus. In einem solchen Anwendungsfall ist die Erzeugung von geringen Mengen Desinfektionsmittel ausreichend zur ständigen Spülung der Rohwasserseite des Filters. Alternativ kann zur Erhöhung der Verweilzeit des Wassers auf der Rohwasserseite vorzugsweise ein Durchfluß-Reaktionsgefäß zwischen die Elektrolysezelle und das Filter in den Wasserweg geschaltet sein. Dem Reaktionsgefäß kann ein Aktivkohlefilter nachgeschaltet sein, welches den Reinheitsgrad des Rohwassers erhöht, bevor es dem Hauptfilter zugeführt wird. Das Aktivkohlefilter kann eine bakterizid wirkende Substanz, insbesondere Silber enthalten, was den Keimfreiheitsgrad des dem Hauptfilter zugeführten Rohwassers weiter verbessert.The disinfectants produced by the electrolysis cell In many cases, they are already sufficient to remove germs from the raw water side or the filter surface the end. One such application is the generation of small amounts of disinfectant sufficient for constant flushing of the raw water side of the filter. Alternatively can to increase the residence time of the water on the raw water side, preferably one Flow-through reaction vessel between the electrolytic cell and the filter in the waterway be switched. An activated carbon filter can be connected downstream of the reaction vessel, which increases the purity of the raw water before it is fed to the main filter will. The activated carbon filter can be a bactericidal substance, in particular Contain silver, which means the degree of sterility of the raw water fed to the main filter further improved.

Zweckmäßigerweise ist eine Chemikalienzuführeinrichtung vorgesehen, deren Zuführweg vor der Elektrolysezelle in den Wasserweg mündet. Mit Hilfe einer derartigen Chemikalienzuführeinrichtung kann, falls der Chloridionengehalt des Rohwassers nicht ausreichen sollte, dem Wasser zusätzlich Chlorid oder zusätzlich Desinfektionsmittel, gegebenenfalls auch Flockungsmittel zugesetzt werden. Weiterhin können pH-Wert-stabilisierende Mittel zugeführt werden.A chemical feed device is expediently provided, the feed path of which opens into the waterway in front of the electrolytic cell. With the help of a such chemical feed device can, if the chloride ion content of the raw water should not be enough to add chloride or disinfectant to the water, if necessary, flocculants can also be added. Furthermore, pH stabilizing Funds are supplied.

Die Erfindung ist insbesondere von Bedeutung, wenn keimfreies Reinwasser, vorzugsweise Trinkwasser erzeugt werden soll. Für diesen Zweck eignen sich speziell Membranfilter, insbesondere Ultrafilter oder Umkehrosmosefilter. Speziell Umkehrosmosefilter haben ausreichende Trenneigenschaften, um selbst Bakterien zurückhalten zu können. Durch Einstellen der Stromstärke des durch die Elektrolysezelle fließenden Stroms kann die Menge des erzeugten Desinfektionsmittels exakt gesteuert werden. Membranschäden durch zu hohe Konzentrationen des Desinfektionsmittels sind deshalb nicht zu befürchten. Zudem kann bei Verwendung des bereits vorstehend erwähnten Durchfluß-Reaktionsgefäßes die Desinfektionsmittelkonzentration durch Erhöhen der Verweilzeit gering gehalten werden. Als Stromquelle eignet sich insbesondere eine einstellbare Konstant-Gleichstromquelle.The invention is particularly important when sterile pure water, preferably drinking water is to be produced. For this purpose are specially suitable Membrane filters, in particular ultrafilters or reverse osmosis filters. Especially reverse osmosis filter have sufficient separation properties to be able to hold back bacteria themselves. By adjusting the amperage des through the electrolytic cell The amount of disinfectant generated can be precisely controlled when the current flows will. Damage to the membrane due to excessive concentrations of the disinfectant therefore not to be feared. In addition, when using the above-mentioned Flow-through reaction vessel, the disinfectant concentration by increasing the Residence time can be kept low. A particularly suitable power source is a adjustable constant direct current source.

Im folgenden sollen Ausführungsbeispiele der Erfindung anhand von Zeichnungen näher erläutert werden. Es zeigt Fig. 1 ein schematisches Fließschema einer Filteranlage und Fig. 2 eine Variante der Filteranlage nach Fig. 1.In the following, embodiments of the invention will be based on Drawings are explained in more detail. 1 shows a schematic flow diagram a filter system and FIG. 2 shows a variant of the filter system according to FIG. 1.

In der in Fig. 1 dargestellten Filteranlage pumpt eine Pumpe 1 das zu reinigende Rohwasser durch ein mechanisches Vorfilter 3 in eine Durchfluß-Elektrolysezelle 5. Eine Hochdruckpumpe 7 drückt das aus der Elektrolysezelle 5 austretende Wasser durch ein Membranfilter 9, beispielsweise ein Ultrafilter oder ein Umkehrosmosefilter. Die Elektrolysezelle 5 umfaßt z.B. mindestens zwei oder eine Vielzahl im Abstand voneinander, parallel angeordneter Elektrodenplatten, die an eine einstellbare Konstant-Gleichstromquelle 11 angeschlossen sind. Das zu reinigende Wasser strömt zwischen den Elektroden hindurch, wobei der zwischen den Elektroden fließende Gleichstrom auf elektrochemischem Weg freies wirksames Chlor (HOCl, Oil , Cl2) und/oder aktiven Sauerstoff aus den im Rohwasser enthaltenen Chloridionen erzeugt. Diese Desinfektionsmittel sorgen für eine ständige Entkeimung dr Rohwasserseite des Membranfilters 9. Selbst bei längerem Gebrauch können Bakterien damit nicht auf die Reinwasserseite durchwachsen.In the filter system shown in Fig. 1, a pump 1 pumps the Raw water to be purified through a mechanical prefilter 3 into a flow-through electrolysis cell 5. A high-pressure pump 7 presses the water emerging from the electrolytic cell 5 through a membrane filter 9, for example an ultrafilter or a reverse osmosis filter. The electrolytic cell 5 comprises, for example, at least two or a plurality at a distance electrode plates arranged in parallel and connected to an adjustable constant direct current source 11 are connected. The water to be cleaned flows between the electrodes, wherein the direct current flowing between the electrodes is electrochemical free effective chlorine (HOCl, Oil, Cl2) and / or active oxygen from the im Chloride ions contained in raw water are generated. These disinfectants take care of constant disinfection of the raw water side of the membrane filter 9. Even for a longer period of time In use, bacteria cannot grow through to the pure water side.

Der an der Konstant-Gleichstromquelle 11 eingestellte konstante Strom bestimmt bei konstanter Durchflußgeschwindigkeit die Menge des erzeugten Desinfektionsmittels. Die Konstant- Gleichstromquelle muß nicht ständig eingeschaltet sein. Es genügt für manche Anwendungsfälle, wenn kurzzeitig hohe Konzentrationen zum Spülen des Membranfilters 9 erzeugt werden.The constant current set at the constant direct current source 11 determines the amount of disinfectant produced at a constant flow rate. The constant DC power source does not have to be switched on all the time be. For some applications it is sufficient if high concentrations are briefly used for rinsing the membrane filter 9 are generated.

Der konstant gehaltene Strom erlaubt aber auch eine exakt dosierte Erzeugung des Desinfektionsmittels, so daß auch gegen Oxidantien empfindliche Membranen nicht beschädigt werden. Speziell bei Umkehrosmosefiltern kann die Trennschärfe so groß sein, daß auch die erzeugten Desinfektionsmittel bzw. deren Rückstände auf der Rohwasserseite zurückgehalten werden.The current, which is kept constant, also allows precisely metered amounts Generation of the disinfectant, so that membranes sensitive to oxidants not be damaged. Especially with reverse osmosis filters, the selectivity be so large that the disinfectants produced or their residues on the raw water side are retained.

Mittels einer Chemikalienpumpe 13 können aus einem Chemikalienvorratsbehälter 15 zusätzliche Chemikalien zwischen dem Vorfilter 3 und der Elektrolysezelle 5 in den Rohwasserweg eingeschleust werden. Bei diesen Chemikalien kann es sich um zusätzliche Desinfektionsmittel handeln oder aber um den Chloridionengehalt des Rohwassers erhöhende Zusätze.By means of a chemical pump 13 can from a chemical storage container 15 additional chemicals between the pre-filter 3 and the electrolytic cell 5 in be introduced into the raw waterway. These chemicals can be additional Act as disinfectants or to increase the chloride ion content of the raw water Additions.

Abhängig vom Anwendungsfall können z.B. pH-Wert-stabilisierende Mittel oder Flockungsmittel zugesetzt werden. Die Chemikalien zufuhr kann intermittierend oder kontinuierlich erfolgen.Depending on the application, e.g. pH-stabilizing agents can be used or flocculants can be added. The supply of chemicals can be intermittent or take place continuously.

Fig. 2 zeigt eine Variante der Filteranlage nach Fig. 1, bei der zwischen die aus der Konstantstromquelle 11 gespeisten Elektrolysezelle 5 und die dem Membranfilter 9 vorgeschaltete Hochdruckpumpe 7 hintereinander ein Durchfluß-Reaktionsgefäß 17 und ein dem Gefäß 17 nachgeschaltetes Aktivkohlefilter 19 in den Rohwasserweg geschaltet ist. Das Reaktionsgefäß 17 erhöht die Verweilzeit des mit dem Desinfektionsmittel der Elektrolysezelle 5 angereicherten Rohwassers. Da die Filteranlage nach Fig. 2 das Rohrwasser ausschließlich mit Hilfe des in der Elektrolysezelle 5 erzeugten Desinfektionsmittels desinfiziert, wird das Desinfektionsmittel in relativ hoher Konzentration erzeugt. Das Aktivkohlefilter 19 verhindert Membranschäden aufgrund der hohen Desinfektionsmittelkonzentration. Vorzugsweise enthält die Aktivkohle des Filters 19 ein Bakterizid, z.B. Silberverbindungen, welches auch dieses Filter gegen Nachverkeimung schützt.Fig. 2 shows a variant of the filter system according to FIG. 1, in which between the electrolysis cell 5 fed from the constant current source 11 and that of the membrane filter 9 upstream high-pressure pump 7, one behind the other, a flow-through reaction vessel 17 and an activated carbon filter 19 connected downstream of the vessel 17 in the raw water path is. The reaction vessel 17 increases the residence time of the disinfectant the electrolytic cell 5 enriched raw water. Since the filter system according to Fig. 2 the pipe water exclusively with the help of that generated in the electrolytic cell 5 Disinfectant disinfected, the disinfectant is in relatively high Creates concentration. The activated carbon filter 19 prevents membrane damage due to the high concentration of disinfectants. The activated carbon preferably contains of the filter 19 a bactericide, e.g. silver compounds, which also this filter protects against bacterial growth.

Claims (10)

Filteranlage Patentansprüche 1. Filteranlage mit einem Filter zur Reinigung von wässrigen Lösungen, dadurch g e k e n n z e i c h n e t daß dem Filter (9) eine Durchfluß-Elektrolysezelle (5), deren Elektroden an eine Stromquelle (11) angeschlossen sind, in der Weise vorgeschaltet ist, daß zumindest ein Teil des dem Filter (9) zugeführten Wassers durch die Elektrolysezelle (5) strömt. Filter system claims 1. Filter system with a filter for Cleaning of aqueous solutions, by not noting the filter (9) a flow-through electrolytic cell (5), the electrodes of which are connected to a power source (11) are connected, is connected upstream in such a way that at least part of the dem Filter (9) supplied water flows through the electrolytic cell (5). 2. Filteranlage nach Anspruch 1, dadurch g e k e n n -z e i c h n e t , daß zwischen die Elektrolysezelle (5) und das Filter (9) ein die Verweilzeit der Flüssigkeit erhöhendes Durchfluß-Reaktionsgefäß (17) in den Wasserweg geschaltet ist.2. Filter system according to claim 1, characterized in that g e k e n n -z e i c h n e t that between the electrolytic cell (5) and the filter (9) a dwell time the liquid-increasing flow-through reaction vessel (17) is switched into the waterway is. 3. Filteranlage nach Anspruch 2, dadurch g e k e n n -z e i c h ne t , daß zwischen das Reaktionsgefäß (17) und das Filter (9) ein Aktivkohlefilter (19) in den Weg des Wassers geschaltet ist.3. Filter system according to claim 2, characterized in that g e k e n n -z e i c h ne t that between the reaction vessel (17) and the filter (9) an activated carbon filter (19) is switched in the path of the water. 4. Filteranlage nach Anspruch 3, dadurch g e k e n n -z e i c h n e t , daß das Aktivkohlefilter (19) eine bakterizid wirkende Substanz, insbesondere Silberverbindungen enthält.4. Filter system according to claim 3, characterized in that g e k e n n -z e i c h n e t that the activated carbon filter (19) is a bactericidal substance, in particular Contains silver compounds. 5. Filteranlage nach Anspruch 1, dadurch g e k e n n -z e i c h n e t , daß das Filter als Membranfilter (9) ausgebildet ist.5. Filter system according to claim 1, characterized in that g e k e n n -z e i c h n e t that the filter is designed as a membrane filter (9). 6. Filteranlage nach Anspruch 5, dadurch g e k e n n -z e i c h n e t , daß das Membranfilter (9) als Ultrafilter oder Umkehrosmosefilter ausgebildet ist. 6. Filter system according to claim 5, characterized in that g e k e n n -z e i c h n e t that the membrane filter (9) is designed as an ultrafilter or reverse osmosis filter is. 7. Filteranlage nach Anspruch 1, dadurch g e k e n n -z e i c h n e t , daß der Elektrolysezelle (5) ein mechanisches Vorfilter (3) vorgeschaltet ist, dessen Porengröße größer als diejenige des nachgeschalteten Filters (9) ist. 7. Filter system according to claim 1, characterized in that g e k e n n -z e i c h n e t that the electrolysis cell (5) is preceded by a mechanical prefilter (3) whose pore size is larger than that of the downstream filter (9). 8. Filteranlage nach Anspruch 1, dadurch g e k e n n -z e i c h n e t , daß vor der Elektrolysezelle (5) der Zuführweg einer Chemikalienzuführeinrichtung (13, 15) in den Wasserweg mündet.8. Filter system according to claim 1, characterized in that g e k e n n -z e i c h n e t that in front of the electrolytic cell (5) the feed path of a chemical feed device (13, 15) opens into the waterway. 9. Filteranlage nach Anspruch 7 und 8, dadurch g e -k e n n z e i c h n e t , daß der Zuführweg der Chemikalienzuführeinrichtung (13, 15) zwischen dem Vorfilter (3) und der Elektrolysezelle (5) in den Wasserweg mündet.9. Filter system according to claim 7 and 8, characterized in that g e -k e n n z e i c h n e t that the supply path of the chemical supply device (13, 15) between the prefilter (3) and the electrolytic cell (5) opens into the waterway. 10. Filteranlage nach Anspruch 1, dadurch g e k e n n -z e i c h n e t , daß die Stromquelle (11) als einstellbare Konstant-Gleichstromquelle ausgebildet ist.10. Filter system according to claim 1, characterized in that g e k e n n -z e i c h n e t that the current source (11) is designed as an adjustable constant direct current source is.
DE19813121337 1981-05-29 1981-05-29 Filter installation Withdrawn DE3121337A1 (en)

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Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0467831A2 (en) * 1990-07-20 1992-01-22 Filtro S.A. Process and apparatus for purification of water and for keeping it clean
WO1997014659A1 (en) * 1995-10-19 1997-04-24 F-Tec Indus S.A. Method for pretreating raw water
DE19634208A1 (en) * 1996-08-25 1998-03-05 Genova Deutschland Gmbh & Co K Waste water treatment treated by low-voltage oxidative-electrochemical process on stainless steel cathode electrode
DE19646414C1 (en) * 1996-11-11 1998-04-23 Genova Deutschland Gmbh & Co K Small-scale municipal waste water treatment plant combines filtration with electrical treatment
WO2002014228A2 (en) * 2000-08-11 2002-02-21 H2O Technologies, Ltd. Under the counter water treatment system
WO2002066382A1 (en) * 2001-02-15 2002-08-29 The Procter & Gamble Company High efficiency electrolysis cell for generating oxidants in solutions
US7048842B2 (en) 2001-06-22 2006-05-23 The Procter & Gamble Company Electrolysis cell for generating chlorine dioxide
DE10225834B4 (en) * 2002-06-11 2008-12-24 Römer, Heinz G. Method and portable device for cleaning surface and well water, as well as treatment of same to drinking water
DE102010007969A1 (en) * 2010-02-15 2011-08-18 Aqua Vivendi Ltd., 84149 Process and device for the treatment of contaminated liquids, in particular water, without the addition of chemicals
US8333873B2 (en) 2001-06-22 2012-12-18 Pur Water Purification Products, Inc. Apparatus for electrolyzing an electrolytic solution
DE102009033153B4 (en) * 2009-06-15 2013-06-13 Heinz Günther Römer Device for the disinfection and treatment of bacteriologically contaminated water
WO2013189959A1 (en) * 2012-06-21 2013-12-27 Adept Water Technologies A/S Water disinfection system
DE102015004915A1 (en) * 2015-04-17 2016-10-20 Reinhard Konrad Brodschelm Method and system for treating water

Citations (4)

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Publication number Priority date Publication date Assignee Title
US1139970A (en) * 1913-08-12 1915-05-18 Electric Water Sterilizer Company Water-purifying apparatus.
US2658033A (en) * 1950-01-07 1953-11-03 Ferris Donald Edward Electrolytic method and apparatus for sterilizing water
DE1272237B (en) * 1963-06-21 1968-07-04 Commissariat Energie Atomique Device for decontaminating drinking water
DE2212420A1 (en) * 1972-03-15 1973-09-20 Cillichemie Water disinfectant bleaching lye - produced by electrolysis of brine at adjustable flow rate

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1139970A (en) * 1913-08-12 1915-05-18 Electric Water Sterilizer Company Water-purifying apparatus.
US2658033A (en) * 1950-01-07 1953-11-03 Ferris Donald Edward Electrolytic method and apparatus for sterilizing water
DE1272237B (en) * 1963-06-21 1968-07-04 Commissariat Energie Atomique Device for decontaminating drinking water
DE2212420A1 (en) * 1972-03-15 1973-09-20 Cillichemie Water disinfectant bleaching lye - produced by electrolysis of brine at adjustable flow rate

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0467831A2 (en) * 1990-07-20 1992-01-22 Filtro S.A. Process and apparatus for purification of water and for keeping it clean
EP0467831A3 (en) * 1990-07-20 1992-07-08 Filtro S.A. Process and apparatus for purification of water and for keeping it clean
WO1997014659A1 (en) * 1995-10-19 1997-04-24 F-Tec Indus S.A. Method for pretreating raw water
FR2740129A1 (en) * 1995-10-19 1997-04-25 F Tec Indus PROCESS FOR PRETREATMENT OF RAW WATER
DE19634208A1 (en) * 1996-08-25 1998-03-05 Genova Deutschland Gmbh & Co K Waste water treatment treated by low-voltage oxidative-electrochemical process on stainless steel cathode electrode
DE19634208C2 (en) * 1996-08-25 1998-10-29 Genova Deutschland Gmbh & Co K Process for the treatment of municipal wastewater
DE19646414C1 (en) * 1996-11-11 1998-04-23 Genova Deutschland Gmbh & Co K Small-scale municipal waste water treatment plant combines filtration with electrical treatment
WO2002014228A3 (en) * 2000-08-11 2002-06-20 H2O Technologies Ltd Under the counter water treatment system
WO2002014228A2 (en) * 2000-08-11 2002-02-21 H2O Technologies, Ltd. Under the counter water treatment system
WO2002066382A1 (en) * 2001-02-15 2002-08-29 The Procter & Gamble Company High efficiency electrolysis cell for generating oxidants in solutions
EP2277833A3 (en) * 2001-02-15 2012-03-28 The Procter & Gamble Company High efficiency electrolysis cell for generating oxidants in solutions
US7048842B2 (en) 2001-06-22 2006-05-23 The Procter & Gamble Company Electrolysis cell for generating chlorine dioxide
US8333873B2 (en) 2001-06-22 2012-12-18 Pur Water Purification Products, Inc. Apparatus for electrolyzing an electrolytic solution
DE10225834B4 (en) * 2002-06-11 2008-12-24 Römer, Heinz G. Method and portable device for cleaning surface and well water, as well as treatment of same to drinking water
DE102009033153B4 (en) * 2009-06-15 2013-06-13 Heinz Günther Römer Device for the disinfection and treatment of bacteriologically contaminated water
DE102010007969A1 (en) * 2010-02-15 2011-08-18 Aqua Vivendi Ltd., 84149 Process and device for the treatment of contaminated liquids, in particular water, without the addition of chemicals
WO2013189959A1 (en) * 2012-06-21 2013-12-27 Adept Water Technologies A/S Water disinfection system
DE102015004915A1 (en) * 2015-04-17 2016-10-20 Reinhard Konrad Brodschelm Method and system for treating water
DE202015009330U1 (en) 2015-04-17 2017-02-24 Reinhard Konrad Brodschelm System for the treatment of water

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