# US 10,246,354 B2 · Device for preparing washing water > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,246,354 B2 - Document ID: US10246354B2 - Status: Granted - Kind: B2 - Application number: 15/301,431 - Filed: 2015-04-10 - Published: 2017-02-02 - Granted: 2019-04-02 - Earliest claimed: 2014-04-12 - Assignees: Dalian Shuangdi Innovative Technology Research Institute Co., Ltd. - Applicants: Dalian Shuangdi Innovative Technology Research Institute Co., Ltd. - Inventors: Zhibang Xiao - Web page: https://patentgrep.com/patent/US10246354B2 ## CPC - C02F 1/467: by electrochemical disinfection; {by electrooxydation or by electroreduction} - C02F 1/46104: {Devices therefor; Their operating or servicing} - C02F 1/4672: {by electrooxydation} - C25B 9/19: with diaphragms - C02F 2001/46138: {Electrodes comprising a substrate and a coating} - C02F 2001/46161: {Porous electrodes} - C02F 2103/00: Nature of the water, waste water, sewage or sludge to be treated - C02F 2201/46115: Electrolytic cell with membranes or diaphragms - C02F 2201/46175: Electrical pulses - C02F 2303/04: Disinfection - C02F: TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE (separation in general B01D; special arrangements on waterborne vessels of installations for treating water, waste water or sewage, e.g. for producing fresh water, B63J; adding materials to water to prevent corrosion C23F; treating radioactively-contaminated liquids G21F9/04; regeneration of reactants for recirculation into processes, see the relevant places for the processes) - C25B: ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR (anodic or cathodic protection C23F13/00; single-crystal growth C30B) ## Abstract A device for preparing washing water, belonging to the technical field of electro-chemical and membrane filtration water treatment. The device comprises a water container which is respectively provided with a water inlet and a water outlet; at least one pair of a cathode and an anode are arranged within the water container; a water-permeable porous membrane is clamped between the coupled cathode and anode with no gaps, and the area of the inside of the water-permeable porous membrane opposite the cathode or the anode is smaller than the area of the inside of the cathode or the anode opposite the water-permeable porous membrane. The device can generate washing water which contains a large a number of ultra-micro bubbles and strong oxidation factors and has excellent reducibility. ## Claims ### Claim 1 A device for preparing washing water, comprising a water container which is respectively provided with a water inlet and a water outlet; at least one pair of a cathode and an anode being coupled with each other and arranged within the water container; wherein, a water-permeable porous membrane is clamped between the coupled cathode and anode with no gaps between the water-permeable porous membrane and the cathode and between the water-permeable porous membrane and the anode, a surface area of a side of the water-permeable porous membrane facing the cathode or the anode is smaller than a surface area of a side of the cathode or of the anode facing the water-permeable porous membrane, and a ratio of the surface area of a side of the water-permeable porous membrane to the smaller one of the surface area of a side of the cathode and the surface area of a side of the anode is 4:5-3:5. ### Claim 2 (depends on 1) The device for preparing washing water according to claim 1, wherein the water-permeable porous membrane has a water-permeable aperture which is smaller than or equal to 2 mm and greater than or equal to 1 nm. ### Claim 3 (depends on 2) The device for preparing washing water according to claim 2, wherein the cathode and anode are powered by a non-symmetrical alternating pulse power supply; peak levels of forward and backward pulses of the power supply are both 5-36V, and pulse frequency is 10-20 Hz. ### Claim 4 (depends on 2) The device for preparing washing water according to claim 2, wherein the cathode and the anode are both inert electrodes prepared by round platinum-coated titanium oxides; the water-permeable porous membrane is a round plane ultra-filtration membrane with a mean water-permeable aperture of 0.01-0.05 μm, and the water-permeable porous membrane has a thickness of 0.2-1 mm. ### Claim 5 (depends on 1) The device according to claim 1, wherein either the cathode or the anode has pores on the surface thereof. ### Claim 6 (depends on 5) The device for preparing washing water according to claim 5, wherein the cathode and anode are powered by a non-symmetrical alternating pulse power supply; peak levels of forward and backward pulses of the power supply are both 5-36V, and pulse frequency is 10-20 Hz. ### Claim 7 (depends on 5) The device for preparing washing water according to claim 5, wherein the cathode and the anode are both inert electrodes prepared by round platinum-coated titanium oxides; the water-permeable porous membrane is a round plane ultra-filtration membrane with a mean water-permeable aperture of 0.01-0.05 μm, and the water-permeable porous membrane has a thickness of 0.2-1 mm. ### Claim 8 (depends on 1) The device for preparing washing water according to claim 1, wherein the cathode and anode are powered by a non-symmetrical alternating pulse power supply; peak levels of forward and backward pulses of the power supply are both 5-36V, and pulse frequency is 10-20 Hz. ### Claim 9 (depends on 1) The device for preparing washing water according to claim 1, wherein the cathode and the anode are both inert electrodes prepared by round platinum-coated titanium oxides; the water-permeable porous membrane is a round plane ultra-filtration membrane with a mean water-permeable aperture of 0.01-0.05 μm, and the water-permeable porous membrane has a thickness of 0.2-1 mm. ### Claim 10 (depends on 1) The device for preparing washing water according to claim 1, wherein the water-permeable porous membrane is a single-layer or multi-layer membrane. ### Claim 11 (depends on 1) The device for preparing washing water according to claim 1, wherein the cathode, the anode and the water-permeable porous membrane are each in a plate shape. ### Claim 12 (depends on 1) The device for preparing washing water according to claim 1, wherein the surface area of the side of the water-permeable porous membrane facing the cathode is in direct contact with and is smaller than the surface area of the side of the cathode facing the water-permeable porous membrane, and the surface area of the side of the water-permeable porous membrane facing the anode is in direct contact with and is smaller than the surface area of the side of the anode facing the water-permeable porous membrane. ### Claim 13 (depends on 1) The device for preparing washing water according to claim 1, wherein a portion of cathode and a portion of the anode face each other with no portion of the water-permeable porous membrane there-between.