WO2018147722A1 - Dispositif de désinfection d'eau - Google Patents

Dispositif de désinfection d'eau Download PDF

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Publication number
WO2018147722A1
WO2018147722A1 PCT/NL2017/050074 NL2017050074W WO2018147722A1 WO 2018147722 A1 WO2018147722 A1 WO 2018147722A1 NL 2017050074 W NL2017050074 W NL 2017050074W WO 2018147722 A1 WO2018147722 A1 WO 2018147722A1
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WO
WIPO (PCT)
Prior art keywords
cathode
channel
anode
segment
shaped
Prior art date
Application number
PCT/NL2017/050074
Other languages
English (en)
Inventor
Maurice Paul Tax
Original Assignee
Bright Spark B.V.
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 Bright Spark B.V. filed Critical Bright Spark B.V.
Priority to PCT/NL2017/050074 priority Critical patent/WO2018147722A1/fr
Priority to CN201780085706.4A priority patent/CN110267919B/zh
Priority to US16/482,833 priority patent/US11203813B2/en
Priority to EP17817925.5A priority patent/EP3580181B1/fr
Priority to PCT/NL2017/050808 priority patent/WO2018147725A1/fr
Priority to TW107104363A priority patent/TWI758406B/zh
Publication of WO2018147722A1 publication Critical patent/WO2018147722A1/fr

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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
    • 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
    • C25B1/00—Electrolytic production of inorganic compounds or non-metals
    • C25B1/01—Products
    • C25B1/28—Per-compounds
    • C25B1/30—Peroxides
    • 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
    • C25B11/00—Electrodes; Manufacture thereof not otherwise provided for
    • C25B11/02—Electrodes; Manufacture thereof not otherwise provided for characterised by shape or form
    • 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
    • C25B11/00—Electrodes; Manufacture thereof not otherwise provided for
    • C25B11/04—Electrodes; Manufacture thereof not otherwise provided for characterised by the material
    • 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
    • C25B11/00—Electrodes; Manufacture thereof not otherwise provided for
    • C25B11/04—Electrodes; Manufacture thereof not otherwise provided for characterised by the material
    • C25B11/051—Electrodes formed of electrocatalysts on a substrate or carrier
    • C25B11/073—Electrodes formed of electrocatalysts on a substrate or carrier characterised by the electrocatalyst material
    • C25B11/091—Electrodes formed of electrocatalysts on a substrate or carrier characterised by the electrocatalyst material consisting of at least one catalytic element and at least one catalytic compound; consisting of two or more catalytic elements or catalytic compounds
    • C25B11/097—Electrodes formed of electrocatalysts on a substrate or carrier characterised by the electrocatalyst material consisting of at least one catalytic element and at least one catalytic compound; consisting of two or more catalytic elements or catalytic compounds comprising two or more noble metals or noble metal alloys
    • 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
    • C25B9/00—Cells or assemblies of cells; Constructional parts of cells; Assemblies of constructional parts, e.g. electrode-diaphragm assemblies; Process-related cell features
    • C25B9/17—Cells comprising dimensionally-stable non-movable electrodes; Assemblies of constructional parts thereof
    • 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
    • C02F2001/46138—Electrodes comprising a substrate and a coating
    • C02F2001/46142—Catalytic coating
    • 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
    • C02F2001/46152—Electrodes characterised by the shape or form
    • C02F2001/46157—Perforated or foraminous electrodes
    • C02F2001/46161—Porous electrodes
    • 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
    • C02F2001/46152—Electrodes characterised by the shape or form
    • C02F2001/46171—Cylindrical or tubular shaped
    • 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
    • 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
    • C02F2201/4615—Time

Definitions

  • the invention relates to a device for disinfection of water.
  • the device does not require the presence of chemicals other than water in the water stream, which
  • the cathode and the anode need to be porous in order to create an adequate water stream through the channel.
  • the manufacturing costs of such materials is relatively high.
  • the yield of this device, and especially in relation to the surface area of the cathode and anode material used, is relatively low. It has also been shown that hydrogen peroxide does not result in complete disinfection.
  • - a channel comprising an inlet at a first end of the channel and an outlet at a second end of the channel;
  • - a cathode arranged in the channel, which cathode comprises a first titanium or stainless steel segment and a second carbon (felt) segment, arranged downstream of the first segment, which first segment and second segment are
  • a mixed metal oxide coating layer comprising ruthenium oxide and/or iridium oxide, which coating layer faces the cathode;
  • - a power source electrically connected to the cathode and the anode.
  • a water stream may be directed through the channel of the device from the first end, then along the anode and the cathode towards the second end, opposed to the technique as described in the cited prior art which suggests a flow through the anode and the cathode of the cell.
  • the concentration of water disinfecting components will be increased in the water stream.
  • the application of one anode which faces two cathode segments defines a first and second zone respectively within the device.
  • first zone it is expected that water may be converted into hydrogen and oxygen by the following
  • the excess of hydrogen gas formed in the two zones in total may be extracted from the device easily due to its low solubility in water and may be used for other purposes whenever desired.
  • hypochlorite (sodium) hypochlorite
  • this hypochlorite is suspected to be converted into chlorine dioxide.
  • the anode is preferably an acid washed titanium.
  • the ruthenium oxide and/or iridium oxide layer of the anode preferably faces both the first segment and the second segment of the cathode.
  • the channel is enclosed by one or more channel walls, retaining the water stream within the channel.
  • the channel walls may be connected to each other through connecting means, in order to increase ease of assembly or disassembly, such as a protrusion and a cooperating cavity.
  • the inlet and the outlet are arranged in line with each other.
  • the connection of the device within the range of a straight conduit or to a second device according to the invention will be enhanced.
  • the inlet and the outlet also have the same cross-section in the direction of flow within the inlet and the outlet for this purpose.
  • inventions may be connected to each other, i.e. with the outlet of a first device to the inlet of the subsequent device, in order to create a chain of devices in order to increase the amount of hydrogen peroxide as required.
  • the carbon based cathode may for instance comprise compressed carbon plates or carbon felt, e.g. made of
  • the metal chosen for the anode and/or cathode preferably comprises and more preferably consists of a metal (or mixed metal oxide) which prevents corrosion, such as titanium .
  • At least one of the cathode and the anode is arranged in the channel substantially parallel to the direction of flow in the channel, and the anode is
  • the flow inside the device is along the cathode and anode, which is beneficial for obtaining a good conversion .
  • the cathode and the anode are preferably oriented with their length direction along the direction of flow within the channel to optimize the contact surface area.
  • the anode and/or the cathode are preferably oblong, which may mean that the anode and/or the cathode have a length parallel to the direction of flow which is significantly higher than one or both of the main dimensions of the
  • the anode and the cathode are parallel, i.e. are with their length and depth direction parallel. This increases the efficiency of the device, since the anode and the cathode segments are placed at an equal distance of each other along their length.
  • one of the cathode and the anode is rod-shaped, and the other of the cathode and the anode is a cylindrical tube, arranged with its height direction parallel to the length direction of the rod-shaped cathode or anode.
  • the cylindrical tube completely envelopes the solid rod-shaped element and is preferably arranged in or close to the channel wall to minimize a water stream between the tube and the channel wall.
  • the tube and the rod are typically held in a fixed position with respect to the tube by suitable mounting means, preferably to or through the channel wall.
  • the rod is cylindrical.
  • the center line of the tube coincides with the length axis of the rod-shaped element, such to arrange the rod in the middle of the tube, in order to equalize the reaction conditions on all sides of the rod.
  • the rod-shaped element is the anode, since the anode does not comprise two zones and in more cases than the cathode does not have a conducting grid or wire for electrical connection.
  • the tube may be provided more easily with these features than the rod.
  • the anode and/or at least one and preferably both of the segments of the cathode are plate- shaped .
  • plate-shaped anodes and/or cathode segments increases the efficiency of the device, since the elements concerned are provided with a large effective surface area.
  • the plate-shaped anodes and/or cathode segments may be disc-shaped. If one of the anode and the cathode is disc-shaped, the other of the anode and the cathode is preferably disc-shaped as well in order to optimize exposure of the anode to the cathode and to ease construction of the device.
  • the surface area of the cathode and the surface area of the anode facing each other are substantially equal.
  • the surface area of the first segment of the cathode facing the channel and the surface area of the second segment of the cathode facing the channel are substantially equal.
  • the channel is substantially U- shaped.
  • a device with a U-shaped channel makes the device more compact. Since the inlet is located at the distal end of the first leg of the U-shape (at a distance from the passage opening between the two legs of the U-shape) , and since the outlet is located at the distal end of the second leg of the U-shape, such a U-shape also brings the inlet and the outlet of the channel relatively close to each other, while still obtaining a relatively large area in which the anode and cathode are facing each other. It also assists in the connection of the device to for instance a conduit.
  • the anode extends from the first leg to the second leg of the U-shaped channel.
  • the first cathode segment is arranged along the first leg of the U-shaped channel and the second cathode segment is arranged along the second leg of the U-shaped channel.
  • first cathode segment and the second cathode segment may also enhance the easiness of electrically connecting the first cathode segment and the second cathode segment in a reliable way, which may be connected to each other by an AMP connector through a side wall of the device (separate from the anode and the cathode) .
  • the edge of the second cathode segment overlaps the first cathode segment, wherein the overlapping part of the second cathode segment preferably faces the anode.
  • connection between the segment is further consolidated, reducing the chances of leakage between the segments.
  • a suitable connection e.g. an adhesive, may be used in the overlapping zone of both segments to further consolidate the connection when required.
  • the cathode is at least partially porous.
  • the cathode and both of the cathode segments may be non-porous, it is preferred if the cathode is at least partially porous, to promote the unwanted process of
  • the dimensions of the device and the plates are chosen such that the edges of the plates within the housing are arranged adjacent to at least three walls of the housing to even further increase the effective surface area (based on a housing of the device shaped as a rectangular cuboid) .
  • the ratio of a) the distance from the anode to the cathode perpendicular to the length direction of the anode to b) the length of the anode along the channel is equal or larger than 1 : 5, preferably equal or larger than 1 : 10.
  • the channel wall comprises
  • ABS acrylonitrile butadiene styrene
  • the channel wall may be partly made of polypropylene or acrylonitrile butadiene styrene (ABS) . Both materials are found safe for treatment of water and are therefore preferred options as a base material for the fabrication of the housing of the device.
  • ABS acrylonitrile butadiene styrene
  • At least one of the cathode and the anode are arranged in the channel wall.
  • An arrangement of the elements concerned along the channel wall described in one of the previous embodiments may be equated to a situation according to the present embodiment in which the elements are arranged in the channel wall.
  • This embodiment may in particular be advantageous if the first cathode segment is further arranged along the first leg of a U-shaped channel and the second cathode segment is arranged along the second leg of this U-shaped channel, since the first cathode segment and the second cathode segment may then be electrically connected outside of the channel, without comprising the tightness of the channel and without the necessity of applying adhesives, which may increase the chance of contamination by dissolution in the water stream.
  • the invention further relates to a method for the production of chlorine dioxide, comprising the steps of:
  • the device is used at a contact time between approximately 2 and 20 seconds per passage through the device, or more particularly, between approximately 1 and 10 seconds per passage along each cathode segment.
  • a contact time chosen lower than 1 seconds will lower the conversion, whereas a contact time chosen higher than 20 seconds will lead to a too large production of oxygen (0 2 ) , which is undesired for obtaining an optimum in conversion towards chlorine dioxide.
  • Typical flow rates are therefore chosen in the range between 2.0 and 5.0 L per minute.
  • Figure 1 shows a perspective partly transparent view of a device according to the invention with a U-shaped channel with the legs on top of each other.
  • Figure 2 shows a cross-section of the device
  • Figure 3 shows a cross-section of a device according to the invention with an elongated channel .
  • Figure 4 shows a cross-section of another device according to the invention.
  • Figure 5 shows an exploded view of the device according to figure 4.
  • Figure 6 shows a cross-section of another device with a U-shaped channel with the legs besides each other according to the invention.
  • Figure 7 shows an exploded view of the device according to figure 6.
  • Figure 8 shows another embodiment of a device according to the invention.
  • FIG. 1 shows a perspective view of a device 1 according to the invention.
  • the device 1 comprises a housing 2 with an inlet 3 and an outlet 4, and a channel 5 running from the inlet 3 towards the outlet 4 which is U-shaped.
  • the U- shaped channel 5 has a first leg 6 and a second leg 7, connected at a passage opening 8, which is open.
  • First leg 6 and second leg 7 of the U-shaped channel are arranged on top of each other with respect to the path between inlet 3 and outlet 4.
  • An oblong first cathode segment 9 and an oblong second cathode segment 10 are arranged in the channel wall of the housing 2.
  • An oblong anode 11 is located halfway between the first cathode segment 9 and the second cathode segment 10 (i.e. at a distance from both segments 9, 10) in a way that all elements 9, 10, 11 are parallel to each other.
  • the cathode segments 9, 10 run in their length direction from the right side channel wall 12 towards inlet 3 and outlet
  • the length and depth of the elements 9, 10 and 11 is equal.
  • the inlet 3 and outlet 4 are arranged in line with each other and their cross-sections are equal.
  • the housing 2 is fully enclosed by walls, either formed by cathode segments 9, 10, channel walls 12, 13, 14, or other walls not further elucidated in figure 1, with the exception of openings for inlet 3 and outlet 4 and for electrically connecting the cathode 9, 10 and anode 11 (not depicted) .
  • the anode 11 comprises a titanium base 15 with ruthenium oxide layers 16, 17, each facing one cathode segment 9, 10 in the respective legs 6, 7 of the channel 5.
  • the anode 11 bridges the distance from the first leg 6 of the U-shaped channel 5 to the second leg 7 of the U-shaped channel 5 across the length direction of the anode 11.
  • FIG. 3 An alternative embodiment of a device 21 according to the invention is shown in figure 3.
  • the device 21 comprises a housing 22 with an inlet 23 and an outlet 24, and a channel 25 running from the inlet 23 towards the outlet 24 which is elongated.
  • a first oblong cathode segment 26 and a second oblong cathode segment 27 are arranged in the wall of the channel 25.
  • the second cathode segment 27 forms an overlap 28 with first cathode segment 28, wherein the overlapping part of the second cathode segment 27 faces an oblong anode 29, arranged at a distance from the cathode 26, 27.
  • the anode 29 also is arranged in an opposing wall of the channel 25.
  • the elements 26, 27, 29 are parallel to each other.
  • the length of cathode elements 26 and 27 is equal, and their length in total is equal to the length of anode 29.
  • the housing 22 is fully enclosed by walls with the exception of openings for inlet 23 and outlet 24 and for electrically connecting the cathode 26, 27 and anode 29 (not depicted) .
  • the anode 29 comprises a titanium base 30 with one ruthenium oxide layer 31 facing the cathode segments 26, 27 in the channel 25.
  • FIG. 4 and 5 show another embodiment of a device 30 according to the invention.
  • the device 30 comprises a housing 31 with a first housing part 31a and a second housing part 31b, fixed connectable to each other with connecting flange 32 and a connecting cavity 33, each running around the circumference of the housing parts 31a, b.
  • a solid rod-shaped anode 34 is disposed centrally within the housing 31 connected electrically through an electrical connection 35.
  • the titanium/ruthenium oxide anode 34 is completely enveloped by a cathode 36 in the shape of a
  • the cathode comprises two zones 38, 39, of which the first zone 38 is a titanium based zone, and of which the second zone 39 is a carbon felt zone, facing the anode, and a metal base for electrical connection beneath the carbon layer (not shown) .
  • a water stream is directed from the inlet 40 in direction 41 towards the outlet 42 in direction 43.
  • Figure 6 and 7 show another embodiment of a device
  • the device 50 comprises a cylindrical housing 51 with a first housing part 51a and a second housing part 51b, fixed connectable to each other with connecting flange 52 and a connecting cavity 53, each running around the circumference of the housing parts 51a, b.
  • a disc-shaped titanium/ [ruthenium and/or iridium oxide] anode 54 is arranged adjacent to the top wall of first housing part 51a, with the ruthenium oxide layer facing the cathode 55, which comprises a first titanium zone 56 and a second pressed carbon plate zone 57, with a titanium base layer 58 attached to the zones 56, 57 for connecting the cathode electrically to connection pin 59.
  • Anode 54 is
  • connection pin 60 Both connection pins 59, 60 extend through the bottom of the housing part 51b through a connection holes 61 to connection box 62.
  • the bottom of the housing part 51b further comprises a wall 63 which makes the zone between anode 54 and cathode 55 U-shaped, with the legs of the U-shape arranged besides each other with respect to the direction from inlet 64 to outlet 65.
  • the flow path within the device 50 is designated in figure 6 with arrows .
  • Figure 8 shows another of a device 100 according to the invention, with an inlet 101, an outlet 102, a first zone 103 and a second zone 104.
  • first zone 103 and second zone 104 there are a preferably even number (in this case four) of parallel plates 105, which are partly anodes and for the remainder cathodes (preferably in a 1 : 1 ratio) .
  • the cathodes are titanium or stainless steel, and in the second zone, the cathodes are carbon or carbon felt.
  • the anode is a titanium provides with a mixed metal oxide coating layer comprising ruthenium oxide or iridium oxide, facing the cathode.
  • the flow is allowed both between and around the plates 105, whereas in the second zone 104, the flow is exclusively between the plates 105.
  • Example 1 In all of the figures, details are shown not in proportion: some details may be drawn exaggerated compared to other elements for this purpose.
  • Example 1
  • a device with a U-shaped channel according to the invention was created according to figure 1 and 2.
  • the inlet and the outlet are disposed in line with each other and both have an inner radius of 4 mm.
  • the distance between the anode (titanium grade 2 with a Ru0 2 -coating facing both legs of the channel) and the cathode perpendicular to the anode in both the first leg (first segment: titanium grade 2) and the second leg (second segment: carbon felt with titanium grid for electrical connection) of the channel is 2 mm.
  • the dimensions of the anode and the first cathode segment are both 40 mm (along the direction of flow in the channel) x 20 mm (the depth of the channel) x 1 mm (the thickness of the anode or first cathode segment, respectively.
  • the dimensions of the second cathode segment is 40 mm x 20 mm x 6 mm in a similar fashion.
  • the passage opening between the first leg and the second leg of the U-shaped channel has a length of 8 mm and a depth of 20 mm.
  • the other walls of the channel were made of polypropylene (HDPE) .
  • the cathode and the anode were connected to a 12 Volt 300 mA power source and a water stream of 2.0 liters per minute was directed through the channel.
  • the amount of chlorine dioxide was increased by 0.350 parts per million after passing the device compared to the concentration at the entrance of the device.

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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)
  • Water Treatment By Electricity Or Magnetism (AREA)

Abstract

L'invention concerne un dispositif de désinfection d'eau, comprenant : - un canal, comprenant une entrée à une première extrémité du canal et une sortie à une seconde extrémité du canal ; - une cathode, agencée dans le canal, laquelle cathode comprend un premier segment en titane ou en acier inoxydable et un second segment en carbone (feutre), agencé en aval du premier segment, lesquels premier segment et second segment sont connectés électriquement l'un à l'autre ; - une anode en titane, agencée dans le canal, comprenant une couche de revêtement d'oxyde métallique mixte comprenant de l'oxyde de ruthénium et/ou de l'oxyde d'iridium, laquelle couche de revêtement fait face à la cathode ; et - une source d'alimentation, connectée électriquement à la cathode et à l'anode. L'invention concerne en outre un procédé de production de dioxyde de chlore.
PCT/NL2017/050074 2017-02-07 2017-02-07 Dispositif de désinfection d'eau WO2018147722A1 (fr)

Priority Applications (6)

Application Number Priority Date Filing Date Title
PCT/NL2017/050074 WO2018147722A1 (fr) 2017-02-07 2017-02-07 Dispositif de désinfection d'eau
CN201780085706.4A CN110267919B (zh) 2017-02-07 2017-12-04 包含通道、阴极、阳极和电源的装置和用于制备二氧化氯的方法
US16/482,833 US11203813B2 (en) 2017-02-07 2017-12-04 Device comprising a channel, a cathode, an anode and a power source, and method for the production of chlorine dioxide
EP17817925.5A EP3580181B1 (fr) 2017-02-07 2017-12-04 Dispositif comprenant un canal, une cathode, une anode et une source d'alimentation, et procédé de production de dioxyde de chlore
PCT/NL2017/050808 WO2018147725A1 (fr) 2017-02-07 2017-12-04 Dispositif comprenant un canal, une cathode, une anode et une source d'alimentation, et procédé de production de dioxyde de chlore
TW107104363A TWI758406B (zh) 2017-02-07 2018-02-07 包括通道、陰極、陽極及電源之裝置及用於產生二氧化氯的方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/NL2017/050074 WO2018147722A1 (fr) 2017-02-07 2017-02-07 Dispositif de désinfection d'eau

Publications (1)

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WO2018147722A1 true WO2018147722A1 (fr) 2018-08-16

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Citations (5)

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