US20080017519A1 - Method and device for producing an alkali metal hypochlorite solution - Google Patents
Method and device for producing an alkali metal hypochlorite solution Download PDFInfo
- Publication number
- US20080017519A1 US20080017519A1 US11/879,962 US87996207A US2008017519A1 US 20080017519 A1 US20080017519 A1 US 20080017519A1 US 87996207 A US87996207 A US 87996207A US 2008017519 A1 US2008017519 A1 US 2008017519A1
- Authority
- US
- United States
- Prior art keywords
- electrolytic cell
- brine
- concentration
- preset
- constant
- 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.)
- Abandoned
Links
- 229910052783 alkali metal Inorganic materials 0.000 title claims abstract description 15
- -1 alkali metal hypochlorite Chemical class 0.000 title claims abstract description 15
- WQYVRQLZKVEZGA-UHFFFAOYSA-N hypochlorite Inorganic materials Cl[O-] WQYVRQLZKVEZGA-UHFFFAOYSA-N 0.000 title claims abstract description 15
- 238000000034 method Methods 0.000 title claims abstract description 14
- XTEGARKTQYYJKE-UHFFFAOYSA-M Chlorate Chemical compound [O-]Cl(=O)=O XTEGARKTQYYJKE-UHFFFAOYSA-M 0.000 claims abstract description 54
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 claims abstract description 50
- 239000000243 solution Substances 0.000 claims abstract description 43
- 239000012267 brine Substances 0.000 claims abstract description 41
- 238000004519 manufacturing process Methods 0.000 claims abstract description 20
- 150000003839 salts Chemical class 0.000 claims abstract description 19
- 238000005868 electrolysis reaction Methods 0.000 claims abstract description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 16
- 238000002156 mixing Methods 0.000 claims description 6
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 5
- 229910052719 titanium Inorganic materials 0.000 claims description 5
- 239000010936 titanium Substances 0.000 claims description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 4
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 4
- 229910052742 iron Inorganic materials 0.000 claims description 2
- 239000000463 material Substances 0.000 claims description 2
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 claims description 2
- 229910052753 mercury Inorganic materials 0.000 claims description 2
- 229910052697 platinum Inorganic materials 0.000 claims description 2
- 229910001220 stainless steel Inorganic materials 0.000 claims description 2
- 239000010935 stainless steel Substances 0.000 claims description 2
- SUKJFIGYRHOWBL-UHFFFAOYSA-N sodium hypochlorite Chemical compound [Na+].Cl[O-] SUKJFIGYRHOWBL-UHFFFAOYSA-N 0.000 abstract description 27
- 239000005708 Sodium hypochlorite Substances 0.000 abstract description 26
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 17
- 239000000460 chlorine Substances 0.000 description 17
- 229910052801 chlorine Inorganic materials 0.000 description 17
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 10
- 239000011780 sodium chloride Substances 0.000 description 5
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 4
- 239000001257 hydrogen Substances 0.000 description 4
- 229910052739 hydrogen Inorganic materials 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 4
- 239000008367 deionised water Substances 0.000 description 3
- 239000003651 drinking water Substances 0.000 description 3
- 235000020188 drinking water Nutrition 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 2
- 239000006227 byproduct Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 239000013535 sea water Substances 0.000 description 2
- BZSXEZOLBIJVQK-UHFFFAOYSA-N 2-methylsulfonylbenzoic acid Chemical compound CS(=O)(=O)C1=CC=CC=C1C(O)=O BZSXEZOLBIJVQK-UHFFFAOYSA-N 0.000 description 1
- 229910019093 NaOCl Inorganic materials 0.000 description 1
- 239000002033 PVDF binder Substances 0.000 description 1
- 150000001450 anions Chemical class 0.000 description 1
- 238000005660 chlorination reaction Methods 0.000 description 1
- 229910021641 deionized water Inorganic materials 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000035784 germination Effects 0.000 description 1
- 238000005342 ion exchange Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 1
- 238000004886 process control Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 239000008213 purified water Substances 0.000 description 1
- 238000001223 reverse osmosis Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000012266 salt solution Substances 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- UKLNMMHNWFDKNT-UHFFFAOYSA-M sodium chlorite Chemical compound [Na+].[O-]Cl=O UKLNMMHNWFDKNT-UHFFFAOYSA-M 0.000 description 1
- 229960002218 sodium chlorite Drugs 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
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
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B1/00—Electrolytic production of inorganic compounds or non-metals
- C25B1/01—Products
- C25B1/24—Halogens or compounds thereof
- C25B1/26—Chlorine; Compounds thereof
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B15/00—Operating or servicing cells
- C25B15/08—Supplying or removing reactants or electrolytes; Regeneration of electrolytes
-
- 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
- C02F1/46104—Devices therefor; Their operating or servicing
- C02F1/46109—Electrodes
- C02F2001/46133—Electrodes characterised by the material
Definitions
- the present invention relates to a method for producing an alkali metal hypochlorite solution, in particular a sodium hypochlorite solution, where a brine solution is supplied to an electrolytic cell at a defined volumetric flow rate and a defined salt concentration.
- the invention further relates to a device for producing an alkali metal hypochlorite solution, in particular a sodium hypochlorite solution comprising at least one non-divided electrolytic cell, means for supplying the electrolytic cell with a brine solution at a defined volumetric flow rate and a defined salt concentration, and a d.c. voltage source for generation of a current across the electrolytic cell.
- Such systems are marketed by Wallace & Tiernan GmbH, Günzburg, under the names OSEC-S® and OSEC-B®.
- either filtered sea water or saturated brine is supplied into an electrolytic cell using a metering pump.
- concentration of the brine is then reduced to approximately 2% by dilution water which likewise is supplied into the electrolytic cell.
- sodium hypochlorite solution and hydrogen are produced, and the hydrogen is separated from the sodium hypochlorite solution and is diluted with air to a non-dangerous concentration, using a blower, and is evacuated to the open air.
- the sodium hypochlorite solution so produced has a concentration of approximately 6 g/l of effective chlorine.
- the whole process for the production of sodium hypochlorite solution is monitored and controlled by an SPC control with a view to achieving the highest possible yield of chlorine and the least possible amount of waste products.
- a different system for the production of sodium hypochlorite solution uses an electrolytic cell without a diaphragm that has a ratio of at least 1.5:1 or over between the effective anode area and the effective cathode area in the electrolytic cell. It is intended in this way to improve effective utilization of the sodium hypochlorite and the current yield under stationary flow conditions. According to a variant of that configuration, the electrolytic cell is additionally cooled in order to reduce the quantity of sodium chlorate produced.
- a system of that kind likewise cannot guarantee optimum process control, in particular if it does not use a cooling system in an effort to make the structure as simple as possible.
- This object is achieved by a method for the production of an alkali metal hypochlorite solution, in particular a sodium hypochlorite solution, where a brine is supplied into a non-divided electrolytic cell at a defined volumetric flow rate and a defined salt concentration and where the current intensity is adjusted to a fixed value so that the concentration of chlorate produced during electrolysis is limited to a maximum of 1.5 g/l, preferably to a maximum of 1 g/l, more preferably to a maximum of 0.6 g/l.
- the object of the invention is further achieved by a device for the production of an alkali metal hypochlorite solution, in particular a sodium hypochlorite solution, having at least one non-divided electrolytic cell, means for supplying a brine solution into the electrolytic cell at a defined volumetric flow rate and a defined salt concentration, and having an a.c. voltage source for the production of current by the electrolytic cell, where the current intensity is adjusted to a fixed value so that the concentration of chlorate produced during electrolysis is limited to a maximum of 1.5 g/l, preferably to a maximum of 1 g/l, more preferably to a maximum of 0.6 g/l.
- the object of the invention is perfectly achieved in this way.
- the invention therefore provides that by suitably determining the current intensity it is possible on the one hand to guarantee a favorable concentration of active chlorine in the alkali metal hypochlorite solution produced and, on the other hand, to limit the production of undesirable chlorate to a tolerable amount.
- the current intensity is pre-adjusted to between 2 and 6 amperes, preferably to between 2 and 4.5 amperes, more preferably to between 2.5 and 3.5 amperes.
- a constant salt concentration of the brine is obtained by mixing a saturated brine with water.
- the salt concentration of the brine supplied into the electrolytic cell is pre-adjusted to a value of between 2 and 10 g/l, preferably to between 5 and 10 g/l.
- the electrolytic cell is operated in this way with an optimum volumetric flow by which optimum yield is guaranteed as a function of the cell dimensions.
- the DC voltage source according to the invention preferably is designed as constant-current source.
- the desired concentration of the brine supplied into the electrolytic cell can be adjusted either by mixing the saturated brine with water or by the use of brine of a specific concentration.
- For mixing and/or feeding the pre-adjusted brine one preferably uses metering pumps which guarantee a constant mixing ratio or a constant pump rate.
- the electrodes of the electrolytic cell may be made, for example, from a material containing iron, mercury, stainless steel, titanium and/or platinum. Preferably, the electrodes consist of uncoated titanium.
- FIG. 1 shows the relationship between current intensity and concentration of active chlorine and/or of chlorate obtained and the outflow temperature in an electrolytic cell according to the invention
- Fig. shows the relationship between the inflow concentration of a sodium chloride solution fed in and the active chlorine concentration produced
- FIG. 3 shows the relationship between the inflow concentration of sodium hypochlorite and the concentration of active chlorine and chlorate produced and the outlet temperature
- FIG. 4 shows the relationship between the volumetric flow employed and the concentration of active chlorine and chlorate produced
- FIG. 5 shows a simplified schematic sketch of the device according to the invention.
- FIG. 5 The basic structure of a device according to the invention is illustrated in FIG. 5 and is indicated generally by reference numeral 10 .
- the device 10 serves to produce an alkali metal hypochlorite solution, in particular a sodium hypochlorite solution, using an electrolytic cell 12 .
- the electrolytic cell 12 is supplied from a brine tank 20 with a saturated brine that is mixed with water from a water tank 22 before it is supplied into the electrolytic cell 12 .
- the electrolytic cell 12 is designed as a one-piece cell, not subdivided by a diaphragm, and comprises a housing made from PVDF.
- the electrodes 14 , 16 which consist of uncoated titanium, are connected to a DC voltage source 18 , designed as a constant-current source, in order to produce a constant current of 3 amperes at a voltage of approximately 3.5 to 4.5 Volts.
- sodium hypochlorite is formed from the aqueous sodium chloride solution during which operation hydrogen is set free.
- the outlet of the electrolytic cell is connected with a collection tank 36 via a pipe 34 .
- the sodium hypochlorite solution produced in this way is carried off through a pipe 38 , while the hydrogen rises to the top and is carried off through an exhaust pipe 40 and is diluted to a non-dangerous concentration.
- the concentration of the brine supplied into the electrolytic cell 12 is adjusted by metering pumps 24 , 26 each of which produces a constant volumetric flow.
- the first metering pump 24 draws in saturated brine from the brine tank 20 at a volumetric flow of 42 ml/h.
- the second metering pump draws in deionized water (or drinking water) from the water tank 22 via a pipe 32 at a volumetric flow of 2.958 l/h.
- the pressure lines of the two metering pumps 24 , 26 open into the inlet of the electrolytic cell 12 via a common pipe 30 .
- the electrolytic cell 12 is thus supplied with a volumetric flow of 3 l/h of sodium hypochlorite solution the concentration of which is adjusted to a value of approximately 5 g/l by mixing the saturated brine with de-ionized water.
- the filling levels of the brine tank 20 , the water tank 22 and the collection tank 36 preferably are monitored by a level monitoring system that may comprise level sensors 42 , 44 , 46 and float switches (not shown), for example.
- the operating parameters of the device 10 are adjusted in a fixed way to obtain a yield of sodium hypochlorite in a range desirable for the production of sodium hypochlorite while the amount of undesirable chlorate obtained is simultaneously minimized.
- FIG. 1 shows a diagram of the concentration of active chlorine (sodium hypochlorite, NaOCl) and of chlorate as a function of different current intensities.
- the outflow temperature of the electrolytic cell is indicated for a constant inflow temperature of 17° C.
- the flow rate is 3.5 l/h in the illustrated example, for a sodium chlorite concentration of 10 g/l. All measuring results (including those shown in FIGS. 2 to 4 ) relate to an electrolytic cell with an effective electrode area of 140 mm ⁇ 80 mm and an electrode spacing of 2 mm.
- the current intensity is limited according to the invention in such a way that a chlorate concentration in the outflow of less than 1.5 g/l, preferably less than 1.0 g/l, more preferably less than 0.6 g/l or than 0.5 g/l is obtained.
- This can be achieved using a current intensity that is preferably adjusted to between 2.5 and 3.5 amperes, optimally to 3 amperes.
- FIG. 2 illustrates the influence of the NaCl concentration of the inflow on the content of active chlorine in the outflow; the current intensity used in this case was 3 amperes.
- FIG. 3 shows that as the salt concentration increases, the amount of chloride formed rises above proportion.
- the concentration of active chlorine and of chlorate in the outflow and the outflow temperature of the electrolytic cell are represented as a function of the NaCl concentration in the inflow (current intensity: 3 A).
- the inflow concentration is therefore adjusted to a value of between 2 and 10 g/l, preferably to 5 g/l.
- FIG. 4 illustrates the influence of the volumetric flow of the brine solution inflow on the concentration of active chlorine and of chlorate in the outflow, for an NaCl inflow concentration of 10 g/l (current intensity: 3 A).
- the optimum volumetric flow for operation of the electrolytic cell is of course dependent on the geometric dimensions of the cell.
- the dimensions of the electrode area are 140 ⁇ 80 mm, with a spacing of 2 mm.
- electrolytic cells of different sizes can be operated in the desired optimum range provided the volumetric flow is adjusted to a corresponding value.
- the device according to the invention distinguishes itself by an especially simple and reliable construction and operates, even without the use of any automatic control means, in an optimum range in which formation of chlorate is minimized and yet a sufficiently high sodium hypochlorite concentration is obtained.
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Metallurgy (AREA)
- Materials Engineering (AREA)
- Inorganic Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102005004063.2 | 2005-01-21 | ||
| DE102005004063A DE102005004063A1 (de) | 2005-01-21 | 2005-01-21 | Verfahren und Vorrichtung zur Herstellung einer Alkalimetallhypochloritlösung |
| PCT/EP2006/000060 WO2006077016A1 (de) | 2005-01-21 | 2006-01-05 | Verfahren und vorrichtung zur herstellung einer alkallimetalhypochloritlösung |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2006/000060 Continuation WO2006077016A1 (de) | 2005-01-21 | 2006-01-05 | Verfahren und vorrichtung zur herstellung einer alkallimetalhypochloritlösung |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US20080017519A1 true US20080017519A1 (en) | 2008-01-24 |
Family
ID=36283675
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US11/879,962 Abandoned US20080017519A1 (en) | 2005-01-21 | 2007-07-19 | Method and device for producing an alkali metal hypochlorite solution |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US20080017519A1 (de) |
| EP (1) | EP1841899A1 (de) |
| DE (1) | DE102005004063A1 (de) |
| WO (1) | WO2006077016A1 (de) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110220212A1 (en) * | 2010-03-12 | 2011-09-15 | Eduardo Vom | Brine Discharge Assembly |
| US20120043268A1 (en) * | 2010-08-17 | 2012-02-23 | Empire Technology Development Llc | Brine disposal system for a brine source |
| WO2012122395A3 (en) * | 2011-03-09 | 2012-11-01 | Miox Corporation | Electrochemical generation of quaternary ammonium compounds |
| US20130248375A1 (en) * | 2012-03-02 | 2013-09-26 | Miox Corporation | Waste to Product On Site Generator |
| CN107747108A (zh) * | 2017-11-21 | 2018-03-02 | 北京金惠昌科技发展有限公司 | 一种实时检测电解液浓度的装置及方法 |
| US10172360B2 (en) | 2014-12-09 | 2019-01-08 | Johnson Matthey Public Limited Company | Methods for the direct electrolytic production of stable, high concentration aqueous halosulfamate or halosulfonamide solutions |
| US20210371989A1 (en) * | 2018-10-25 | 2021-12-02 | De Nora Holdings Us, Inc. | Systems and methods for controlling chlorate production in electrolytic cells |
| JP2023089994A (ja) * | 2021-12-17 | 2023-06-29 | パナソニックＩｐマネジメント株式会社 | 電解水生成装置 |
| EP4225702A4 (de) * | 2020-10-08 | 2024-06-19 | Evoqua Water Technologies LLC | Verfahren zur verwendung von entmineralisiertem wasser zur chloratreduktion in vor-ort-sole-elektrochlorierungssystemen |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102006058454B4 (de) * | 2006-12-12 | 2012-01-26 | Joachim Sautter | Verfahren zur elektrolytischen Herstellung einer schwachen Natriumhypochloritlösung mit differenzdruckgesteuerter pH- und Redoxregelung mittels Elektrolysemembranzellen aus Wasser (H2O) und Kochsalz (NaCl) |
| GB2448494A (en) * | 2007-03-01 | 2008-10-22 | Giovanni Del Signore | Sodium hypochlorite production |
| DE102007023085A1 (de) | 2007-05-16 | 2007-10-25 | Alldos Eichler Gmbh | Vorrichtung zur Erzeugung von fluiden Reaktionsprodukten |
| DE202009016240U1 (de) | 2009-11-27 | 2010-04-29 | Weihmann, Andreas, Dipl.-Designer | Wassergewinnungssystemtechnologie |
| DE102020001704B4 (de) | 2020-03-13 | 2024-12-19 | Bundesrepublik Deutschland, vertr. durch das Bundesministerium der Verteidigung, vertr. durch das Bundesamt für Ausrüstung, Informationstechnik und Nutzung der Bundeswehr | Verfahren zur Aufbereitung eines Permeats einer mobilen Wasseraufbereitungsanlage |
| DE102020116916A1 (de) | 2020-06-26 | 2021-12-30 | Aquama Sàrl | Vorrichtung sowie Verfahren zur Herstellung einer Reinigungsflüssigkeit |
| DE102024201152A1 (de) * | 2024-02-08 | 2025-08-14 | BSH Hausgeräte GmbH | Bereitstellen von Reinigungsmittel vor Ort |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US4151052A (en) * | 1977-02-18 | 1979-04-24 | Chlorine Engineers Corp., Ltd. | Process for producing sodium hypochlorite |
| US4329215A (en) * | 1980-06-13 | 1982-05-11 | Frank Scoville | Sodium hypochorite production and storage system |
| US4510026A (en) * | 1983-11-16 | 1985-04-09 | Panclor S.A. | Process for electrolysis of sea water |
| US5622613A (en) * | 1994-10-05 | 1997-04-22 | Chlorine Engineers Corp., Ltd. | Electrolytic method for manufacturing hypochlorite |
| US5993669A (en) * | 1996-05-21 | 1999-11-30 | Autopilot Systems, Inc. | Method and apparatus for optimizing electrolytic production of a halogen in a water treatment system |
| US20020139689A1 (en) * | 2001-02-01 | 2002-10-03 | Vadim Zolotarsky | Electrode coating and method of use in a reverse polarity electrolytic cell |
| US6632347B1 (en) * | 1999-08-06 | 2003-10-14 | Sterilox Medical (Europe) Limited | Electrochemical treatment of an aqueous solution |
| US20070007146A1 (en) * | 2005-07-07 | 2007-01-11 | Severn Trent Water Purification, Inc. | Process for producing hypochlorite |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3138438C2 (de) * | 1981-09-26 | 1984-07-05 | W.C. Heraeus Gmbh, 6450 Hanau | Elektrolysezelle |
| DE3215767A1 (de) * | 1982-04-28 | 1983-11-03 | Karl Dr. 6000 Frankfurt Hrska | Anordnung mit elektrolysezelle zur wasserentkeimung |
| DE3410489A1 (de) | 1984-03-22 | 1985-09-26 | Heraeus Elektroden GmbH, 6450 Hanau | Verfahren und vorrichtung, insbesondere zur desinfektion von wasser |
| DE3430616A1 (de) * | 1984-08-20 | 1986-02-27 | Siemens Ag | Verfahren und vorrichtung zum entkeimen von trinkwasser |
| DE3704955A1 (de) * | 1987-02-17 | 1988-08-25 | Roemer Technik Gmbh | Elektrolyse-apparat |
| GB2334968A (en) | 1998-03-03 | 1999-09-08 | Univ Northumbria Newcastle | Apparatus and method for the electrolytic production of hypochlorite |
-
2005
- 2005-01-21 DE DE102005004063A patent/DE102005004063A1/de not_active Withdrawn
-
2006
- 2006-01-05 EP EP06700215A patent/EP1841899A1/de not_active Ceased
- 2006-01-05 WO PCT/EP2006/000060 patent/WO2006077016A1/de not_active Ceased
-
2007
- 2007-07-19 US US11/879,962 patent/US20080017519A1/en not_active Abandoned
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4151052A (en) * | 1977-02-18 | 1979-04-24 | Chlorine Engineers Corp., Ltd. | Process for producing sodium hypochlorite |
| US4329215A (en) * | 1980-06-13 | 1982-05-11 | Frank Scoville | Sodium hypochorite production and storage system |
| US4510026A (en) * | 1983-11-16 | 1985-04-09 | Panclor S.A. | Process for electrolysis of sea water |
| US5622613A (en) * | 1994-10-05 | 1997-04-22 | Chlorine Engineers Corp., Ltd. | Electrolytic method for manufacturing hypochlorite |
| US5993669A (en) * | 1996-05-21 | 1999-11-30 | Autopilot Systems, Inc. | Method and apparatus for optimizing electrolytic production of a halogen in a water treatment system |
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| US20020139689A1 (en) * | 2001-02-01 | 2002-10-03 | Vadim Zolotarsky | Electrode coating and method of use in a reverse polarity electrolytic cell |
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| EP4225702A4 (de) * | 2020-10-08 | 2024-06-19 | Evoqua Water Technologies LLC | Verfahren zur verwendung von entmineralisiertem wasser zur chloratreduktion in vor-ort-sole-elektrochlorierungssystemen |
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| JP2023089994A (ja) * | 2021-12-17 | 2023-06-29 | パナソニックＩｐマネジメント株式会社 | 電解水生成装置 |
| JP7752290B2 (ja) | 2021-12-17 | 2025-10-10 | パナソニックＩｐマネジメント株式会社 | 電解水生成装置 |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102005004063A1 (de) | 2006-07-27 |
| WO2006077016A1 (de) | 2006-07-27 |
| EP1841899A1 (de) | 2007-10-10 |
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