EP1603441A4 - Elektrolytische zelle zur oberflächen- und point-of-use-desinfektion - Google Patents

Elektrolytische zelle zur oberflächen- und point-of-use-desinfektion

Info

Publication number
EP1603441A4
EP1603441A4 EP04713802A EP04713802A EP1603441A4 EP 1603441 A4 EP1603441 A4 EP 1603441A4 EP 04713802 A EP04713802 A EP 04713802A EP 04713802 A EP04713802 A EP 04713802A EP 1603441 A4 EP1603441 A4 EP 1603441A4
Authority
EP
European Patent Office
Prior art keywords
oxidant
container
electrolytic cell
electrolyte
cell
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Withdrawn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
EP04713802A
Other languages
English (en)
French (fr)
Other versions
EP1603441A2 (de
Inventor
Rodney E Herrington
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.)
De Nora Miox Inc
Original Assignee
Miox Corp
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 Miox Corp filed Critical Miox Corp
Publication of EP1603441A2 publication Critical patent/EP1603441A2/de
Publication of EP1603441A4 publication Critical patent/EP1603441A4/de
Withdrawn legal-status Critical Current

Links

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
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L2/00—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor
    • A61L2/02—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor using physical phenomena
    • A61L2/03—Electric current
    • A61L2/035—Electrolysis
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L2/00—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor
    • A61L2/16—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor using chemical substances
    • A61L2/18—Liquid substances or solutions comprising solids or dissolved gases
    • A61L2/183—Ozone dissolved in a liquid
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L2/00—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor
    • A61L2/16—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor using chemical substances
    • A61L2/22—Phase substances, e.g. smokes, aerosols or sprayed or atomised substances
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L2/00—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor
    • A61L2/24—Apparatus using programmed or automatic operation
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L2202/00—Aspects relating to methods or apparatus for disinfecting or sterilising materials or objects
    • A61L2202/20—Targets to be treated
    • A61L2202/24—Medical instruments, e.g. endoscopes, catheters, sharps
    • 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
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2201/00—Apparatus for treatment of water, waste water or sewage
    • C02F2201/46—Apparatus for electrochemical processes
    • C02F2201/461—Electrolysis apparatus
    • C02F2201/46105—Details relating to the electrolytic devices
    • C02F2201/4612—Controlling or monitoring
    • C02F2201/46125—Electrical variables
    • 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
    • C02F2201/4616—Power supply
    • C02F2201/46165—Special power supply, e.g. solar energy or batteries
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2307/00—Location of water treatment or water treatment device
    • C02F2307/02—Location of water treatment or water treatment device as part of a bottle
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W10/00—Technologies for wastewater treatment
    • Y02W10/30—Wastewater or sewage treatment systems using renewable energies
    • Y02W10/37—Wastewater or sewage treatment systems using renewable energies using solar energy

Definitions

  • This invention relates to the production of oxidants in an electrolytic cell that are introduced into an aqueous solution used as a disinfectant or sanitizing liquid.
  • This invention involves electrolytic technology known generally in the art. Electrolytic technology utilizing dimensionally stable anodes (DSA) has been used for years for the production of chlorine and other mixed-oxidant solutions. Dimensionally stable anodes are described in U.S. Patent No. 3,234,110 to Beer, entitled “Electrode and Method of Making Same”. An example of an electrolytic cell with membranes is described in U.S. Patent RE 32,077 to deNora, et al., entitled “Electrode Cell with Membrane and Method for Making Same”. An electrolytic cell with dimensionally stable anodes without membranes is described in U.S. Patent No. 4,761 ,208 to Gram, et al., entitled “Electrolytic Method and Cell for Sterilizing Water.”
  • the invention also involves the use of electrolytic cells to produce an oxidant.
  • Commercial electrolytic cells have been used routinely for oxidant production that utilizes a flow-through configuration that may or may not be under pressure that is adequate to create flow through the electrolytic device. Examples of cells of this configuration are described in U.S. Patent No. 6,309,523 to Prasnikar, et al., entitled “Electrode and Electrolytic Cell Containing Same," and U.S. Patent No. 5,385,711 to Baker, et al., entitled “Electrolytic Cell for Generating Sterilization Solutions Having Increased Ozone Content," and many other membrane-type cells.
  • the oxidant is produced in an open-type cell or drawn into the cell with a syringe or pump-type device, such as described in U.S. Patent No. 6,524,475 to Herrington, et al., entitled "Portable Water Disinfection System.”
  • the word “sanitize” means: to make sanitary, as by cleaning or sterilizing.
  • the word “disinfect” means: to free from disinfection, esp. by destroying harmful microorganisms; broadly; cleanse.
  • the word “disinfectant” means: a chemical that destroys vegetative forms of harmful microorganisms esp. on inanimate objects but that may be less effective in destroying bacterial spores.
  • Webster's Ninth New Collegiate Dictionary (1984) For purposes of this application, the words sanitize, disinfect, disinfectant and variants thereof are used in the broad sense as meaning, cleanse.
  • a specific type of electrolytic cell that produces an oxidant is disclosed in U.S. Patent Application Serial No.
  • a valve mechanism opens, and the spring-loaded piston fills the complete volume of the cell chamber forcing the oxidant out of the cell chamber.
  • Another electrolytic cell configuration is disclosed in U.S. Patent Application, Attorney Docket No. 30750-1001 , entitled “Gas Drive Electrolytic Cell” filed concurrently herewith. The specification describes a sealed cell during the electrolysis that produces the oxidant which results in a build up of gas pressure, primarily H 2 released at the cathode, which overcomes a check valve that opens to expel both the gas and the oxidant.
  • U.S. Patent No. 3,996,126 to Rasmussen describes an electrolyzed saline solution generated in a closed container and used to treat teeth and oral cavities. A propellant gas, electrical pump, or manual pump is utilized to force the electrolyzed saline solution out of the container through a tube.
  • U.S. Patent 4,019,986 to Burris, et al describes a portable ozone generator and container for purifying water.
  • U.S. Application US 2002/0175085 A1 to Harkins, et al relates to a stationary electrolyzed oxidizing water system for spraying a sanitizing solution on eggs.
  • Patent 6,502,766 B1 to Streutker, et al relates to a motorized sprayer for attachment to a bottle.
  • U.S. Patent 6,363,951 B1 to Wood describes an ozone generation system for use in a water containing device such as a sink for disinfection of materials placed in the sink.
  • the present invention comprises an apparatus and method for producing an oxidant to treat a liquid that may be dispensed from a spray bottle or other container as a disinfectant.
  • the apparatus of the invention is low-cost, small and simple, suitable for consumer residential use, although industrial, medical and military applications are also within the scope of the invention.
  • the apparatus may comprise a hand-held portable spray bottle or other container that is initially filled with a liquid, preferably water.
  • the apparatus further comprises at least one electrolytic cell.
  • the cell includes at least two electrodes, one electrode comprises at least one cathode and another electrode comprises at least one anode. Many types and configurations of electrodes may be suitable for the electrolytic cell of the present invention.
  • the apparatus comprises a control circuit for selectively delivering an electrical charge between the cathode and the anode from any energy source.
  • the energy source electrically connected with the control circuit, delivers a controlled electrical charge having a value determined by the cell characteristics, such as the electrolyte type and quantity, size, and other factors.
  • the energy or power source may be a standard or rechargeable battery, direct AC connection or solar power.
  • an electrolyte preferably comprising a sodium chloride brine solution or a sodium chlorite solution, is located within the cell housing between the anode and cathode.
  • Other oxidants may be produced, based upon the desired application including other halogen oxides, such as chlorine dioxide.
  • the controlled electrical charge passes through the electrolytic solution from cathode to anode, thereby generating at least one oxidant in the electrolyte.
  • a valve or other means may be used to control fluid connection between the cell and the liquid within the container.
  • a fluid such as water is placed in the bottle, and oxidants produced within the electrolytic cell are transferred to the water to produce a solution with a free available chlorine concentration of sufficient strength to effectively sanitize the material or surface of an object.
  • the bottle can be an open bottle, closed bottle, or bottle with a spray nozzle or other pumping means to transfer the solution within the bottle to the material or surface to be treated.
  • the spray bottle is placed on a base unit.
  • the base unit comprises an electrolytic cell, electrolyte storage compartment, power supply, and control circuit. Oxidants produced in the base unit are transferred to the interior of the spray bottle through a valve mechanism. The spray bottle is then removed from the base and used to disinfect surfaces, foods, or other materials requiring sanitization.
  • the spray bottle includes a handle that houses an electrolytic cell, electrolyte storage compartment, power supply, and control circuit.
  • the spray bottle includes a separate, compact, electrolytic oxidant-producing device or module that removably, mechanically attaches to the spray bottle.
  • the electrolytic device is used for production, of a number of discrete charges of concentrated oxidant and is then replaced when the oxidant production capacity is depleted.
  • the replaceable oxidant producing device comprises an electrolytic cell, electrolyte storage compartment, power supply, and control circuit.
  • Fig. 1 is a view of a bottle mounted on an oxidant-producing base unit.
  • Fig. 2 is a bottle with an oxidant producing unit housed within the handle of the bottle.
  • Fig. 3 is a bottle with a separate replaceable oxidant-producing device or module removably attached to the bottle.
  • FIG. 1 A simple version of an oxidant producing device useful in the present invention is described and shown in Figs. 1 , 2, and 3 of U.S. Patent Application Serial No. 09/907,092 for "Portable Water Disinfection System", incorporated herein by reference.
  • Another oxidant producing device useful in the present invention is described and shown in U.S. Patent Application, Attorney Docket No. 30750-1001 , entitled “Gas Drive Electrolytic Cell", filed concurrently herewith.
  • Other variations and configurations of an electrolytic cell can be produced to accommodate various applications.
  • the object of the current invention is to incorporate an electrolytic cell into a spray bottle or other container for cleaning solution to enhance the disinfection performance of the cleaning solution.
  • the cleaning solution may have many application including household or industrial surface cleaning (countertops, lavatories, etc), an enhanced cleaning and disinfection solution for washing hands in a sterile environment, for cleaning of medical instruments, and any other application where inactivation of viruses, bacteria, protozoans, molds, spores, volatile organic compounds, pesticides, herbicides, chemical contamination agents, cyanide, and other undesirable matter can be destroyed by the oxidant solution.
  • one embodiment of the present invention comprises base unit 20 with bottle 22 placed on a horizontal surface for receiving the bottle.
  • bottle 22 comprises a spray bottle.
  • the bottle may be a closed or capped bottle, or an open bottle.
  • base unit 22 comprises electrolytic cell 46, circuit board 34, and electrolyte storage container 32.
  • power supply 36 is attached by an electrical cord to base unit 22 and plugs directly into a wall electrical outlet.
  • power supply 36 is located within base unit 22 and plugged directly into an electrical outlet.
  • fluid 24 in order to commence operation, fluid 24, preferably water, is introduced into bottle 22.
  • Activation switch 38 is pressed by the user thereby activating production of oxidants.
  • Electrolyte within storage container 32 is transferred to electrolytic cell 46. Electrical power is applied to electrolytic cell 46 through control circuit 34. Status of oxidant production and fault conditions such as low electrolyte levels or other conditions are indicated by illumination of status lights 40.
  • oxidants are transferred to the interior of bottle 22 via a valve and probe 42. Probe 42 provides fluid communication with the liquid in bottle 22 via self sealing valve 44 which is integral to bottle 22.
  • Other user controlled apparatus may be employed to transfer the electrolyte to the solution within bottle 22.
  • fluid 24' comprises a free available chlorine concentration of sufficient value to sanitize desired objects.
  • bottle 22 is removed from base unit 20 and is transported by the user to other locations for the purpose of disinfecting or sanitizing surfaces, food products, or other materials.
  • Bottle 22 comprises handle 26 which further comprises spray trigger 28 and spray nozzle 30.
  • handle 22 comprises oxidant efficacy indicator light 48.
  • Oxidant efficacy indicator light 48 provides status to the user of the free available chlorine oxidant strength in fluid 24.
  • Oxidant efficacy indicator light 48 is activated via electrical contact 50.
  • Oxidant efficacy indicator light 48 is powered from a capacitor circuit located within handle 26.
  • oxidant efficacy indicator light 48 is powered by a battery located within handle 26.
  • activation of oxidant efficacy indicator light 48 is triggered by a radio frequency signal generated by an RF circuit located within base unit 20.
  • the apparatus comprises bottle 22 and sprayer head 54.
  • Sprayer head 54 comprises an electrolytic cell, a power supply, a control circuit, sprayer nozzle 30, spray handle 28, and electrolyte container 32.
  • Sprayer head 54 includes oxidant efficacy indicator light 48.
  • Sprayer head 54 plugs directly into an electrical wall outlet via electrical connector 52 to provide power to recharge a battery located within sprayer head 54.
  • the battery within sprayer head 54 provides the power to deliver a charge to the electrolyte within the electrolytic cell to produce oxidants.
  • electrolysis within the cell within sprayer head 54 is powered directly from the electrical wall outlet via electrical connectors 52.
  • electrolytic cell module 60 comprises an electrolytic cell, electrolyte source, power source, and control circuit. Electrolytic cell module 60 is removable from bottle 22, preferably by threads or other mechanical fluid-tight sealing mechanism to bottle 22. Electrolytic cell module 60 is removable for replacement as a complete assembly from bottle 22. In an alternative embodiment, the electrolyte cell and power source are replaceable components that attach to electrolytic cell module 60. In this embodiment, electrolytic cell module 60 comprises the electrolytic cell and control circuit. The oxidant produced by module 60 is in fluid connection with the liquid in bottle 22.

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Epidemiology (AREA)
  • Chemical & Material Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Electrochemistry (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Organic Chemistry (AREA)
  • Apparatus For Disinfection Or Sterilisation (AREA)
  • Water Treatment By Electricity Or Magnetism (AREA)
EP04713802A 2003-02-21 2004-02-23 Elektrolytische zelle zur oberflächen- und point-of-use-desinfektion Withdrawn EP1603441A4 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US44899403P 2003-02-21 2003-02-21
US448994P 2003-02-21
PCT/US2004/005553 WO2004084698A2 (en) 2003-02-21 2004-02-23 Electrolytic cell for surface and point of use disinfection

Publications (2)

Publication Number Publication Date
EP1603441A2 EP1603441A2 (de) 2005-12-14
EP1603441A4 true EP1603441A4 (de) 2006-11-22

Family

ID=33098051

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04713802A Withdrawn EP1603441A4 (de) 2003-02-21 2004-02-23 Elektrolytische zelle zur oberflächen- und point-of-use-desinfektion

Country Status (6)

Country Link
US (1) US20060157343A1 (de)
EP (1) EP1603441A4 (de)
JP (1) JP5022704B2 (de)
AU (1) AU2004224430C1 (de)
CA (1) CA2556014A1 (de)
WO (1) WO2004084698A2 (de)

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CN106006851B (zh) * 2011-08-25 2020-05-12 伊诺净技术公司 用于产生和输送臭氧水的装置
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CA2556014A1 (en) 2004-10-07
EP1603441A2 (de) 2005-12-14
JP5022704B2 (ja) 2012-09-12
AU2004224430B2 (en) 2009-11-19
AU2004224430A1 (en) 2004-10-07
WO2004084698A3 (en) 2004-12-23
US20060157343A1 (en) 2006-07-20
WO2004084698A2 (en) 2004-10-07
JP2006518666A (ja) 2006-08-17

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