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
  • C02F1/46104—Devices therefor; Their operating or servicing
  • C02F1/4618—Devices therefor; Their operating or servicing for producing "ionised" acidic or basic water
• • 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
  • 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
  • C02F1/68—Treatment of water, waste water, or sewage by addition of specified substances, e.g. trace elements, for ameliorating potable water
  • C02F1/685—Devices for dosing the additives
  • C02F1/686—Devices for dosing liquid additives
• • 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
  • A61L2202/10—Apparatus features
  • A61L2202/11—Apparatus for generating biocidal substances, e.g. vaporisers, UV lamps
• • 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
  • C02F1/28—Treatment of water, waste water, or sewage by sorption
  • C02F1/283—Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
• • 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
  • C02F1/68—Treatment of water, waste water, or sewage by addition of specified substances, e.g. trace elements, for ameliorating potable water
  • C02F1/685—Devices for dosing the additives
• • 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
  • C02F1/42—Treatment of water, waste water, or sewage by ion-exchange
  • C02F2001/425—Treatment of water, waste water, or sewage by ion-exchange using cation exchangers
• • 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
  • C02F1/4618—Devices therefor; Their operating or servicing for producing "ionised" acidic or basic water
  • C02F2001/46185—Devices therefor; Their operating or servicing for producing "ionised" acidic or basic water only anodic or acidic water, e.g. for oxidizing or sterilizing
• • 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
  • C02F1/4618—Devices therefor; Their operating or servicing for producing "ionised" acidic or basic water
  • C02F2001/4619—Devices therefor; Their operating or servicing for producing "ionised" acidic or basic water only cathodic or alkaline water, e.g. for reducing
• • 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
  • C02F2201/002—Construction details of the apparatus
  • C02F2201/006—Cartridges
• • 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
  • C02F2201/009—Apparatus with independent power supply, e.g. solar cells, windpower or fuel cells
• • 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
  • C02F2201/46115—Electrolytic cell with membranes or diaphragms
• • 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
• • C—CHEMISTRY; METALLURGY
  • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
  • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
  • C02F2209/00—Controlling or monitoring parameters in water treatment
  • C02F2209/40—Liquid flow rate
• • C—CHEMISTRY; METALLURGY
  • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
  • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
  • C02F2209/00—Controlling or monitoring parameters in water treatment
  • C02F2209/42—Liquid level
• • C—CHEMISTRY; METALLURGY
  • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
  • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
  • C02F2303/00—Specific treatment goals
  • C02F2303/04—Disinfection
• • 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
  • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
  • Y02A20/00—Water conservation; Efficient water supply; Efficient water use
  • Y02A20/20—Controlling water pollution; Waste water treatment
  • Y02A20/208—Off-grid powered water treatment
  • Y02A20/212—Solar-powered wastewater sewage treatment, e.g. spray evaporation

Definitions

• the presently disclosed subject matter relates to a method and system for producing cleaning and/or sanitizing solutions using a replaceable cartridge.
• Sterilizing and cleaning solutions are commonly used on a wide variety of surfaces when microbial action against spores, viruses, fungi, and/or bacteria is required. Such sterilizing and cleaning solutions have a broad range of applications in medical, commercial, and household environments to eliminate further microbial growth. For example, sterilizing solutions are commonly used in the preservation of poultry and fish, general agricultural and petrochemical uses, breaking down of biofilms, produce conditioning, water treatment, general medical disinfection, and any application where there is a desire to free a surface from living organisms.
• sterilizing and cleaning solutions can be produced electrochemically using an electrolytic cell.
• electrolytic production of these solutions there are several disadvantages associated with the electrolytic production of these solutions in the prior art. Particularly, the production of corrosive chemicals inside the electrolytic cell can damage the electrodes, thereby limiting cell life. In addition, scale can build up on the electrodes and cell internals. Further, the life of the ion exchange membranes is limited.
• sterilizing and cleaning solutions can be produced chemically by reacting two or more reagents.
• a chlorine dioxide solution can be produced by chemically reacting sodium chlorite and citric acid in the presence of water or water vapor.
• some solutions such as chlorine dioxide solutions
• transport and storage of chemically produced cleaning and/or sterilizing solutions has been found to be limiting.
• the presently disclosed system addresses the disadvantages associated with prior art methods and devices for producing sterilizing and cleaning solutions.
• the presently disclosed subject matter employs a cartridge system to facilitate the easy replacement of consumables and wear components.
• electrolyte supply, water filter, water conditioner, additives, the electrolyzing cell, cleaning and sanitizing concentrates, and the like can be supplied in a cartridge in a quantity measured to last for the chosen design life of the cartridge.
• the cartridge reaches the end of its service life, it is easily removed and replaced.
• none of the consumables are wasted, since all will expire at approximately the same time.
• the disclosed system virtually eliminates the cost and time necessary for service and maintenance of the system as a result of the rapid and simple replacement of the cartridge, and the longevity of the non- cartridge elements.
• the presently disclosed subject matter addresses the problems present in the prior art by disclosing a system and method for producing a cleaning and/or sterilizing solution by providing consumables in a quick- change cartridge.
• the presently disclosed subject matter is directed to an apparatus for the preparation of a cleaning, sanitizing, or sterilizing solution.
• the apparatus comprises at least one modular component.
• the presently disclosed subject matter is directed to an electrolyzing cell comprising an anode, a cathode, electrolyte, and at least one ion exchange membrane.
• the cell is packaged in a replaceable cartridge.
• the cell functions for a pre-determined, limited duration.
• the cartridge comprises at least one cleaning, sanitizing, or sterilizing solution concentrate.
• the presently disclosed subject matter is directed to a method of electrolytically producing cleaning, sanitizing, or sterilizing solutions.
• the method comprises providing an apparatus comprising at least one modular component, wherein the modular component comprises an electrolyzing cell.
• the method also comprises connecting the electrolyzing cell to at least one power structure, whereby a cleaning, sanitizing, or sterilizing solution is produced.
• the presently disclosed subject matter is directed to a method of chemically producing a cleaning, sanitizing, or sterilizing solution, said method comprising providing an apparatus comprising at least one modular component, wherein the modular component comprises a sachet comprising the chemical precursors required to generate the solution.
• the disclosed method further comprises providing an initiating agent and contacting the chemical precursors with the initiating agent to generate a gas.
• FIGS 1 a-1 b and 2a-2c are perspective views of some embodiments of cartridges that can be used in accordance with the presently disclosed subject matter.
• Figure 3a is rear elevation view of one embodiment of a cartridge that can be used with the presently disclosed subject matter.
• Figure 3b is a schematic representation of one embodiment of the interior of a cartridge that can be used in accordance with the presently disclosed subject matter.
• Figure 4a is a perspective view of one embodiment of an electrolyzing cell that can be used in accordance with the presently disclosed subject matter.
• Figure 4b is a perspective sectional view taken along line 4b-4b of Figure 4a.
• Figures 5a and 5b are schematic representations of embodiments of electrolyzing cells that can be used in accordance with the presently disclosed subject matter.
• Figure 6a is one embodiment of an anode electrode that can be used in accordance with the presently disclosed subject matter.
• Figures 6b and 6c are top plans views of an anode and cartridge interaction in some embodiments of the presently disclosed subject matter.
• Figure 7 is a perspective view of one embodiment of an electrolytic cell that can be used in accordance with the presently disclosed subject matter.
• Figure 8 is a perspective view of one embodiment of an electrolytic cell that can be used in accordance with the presently disclosed subject matter.
• Figure 9 is a front elevation view of one embodiment of an anode compartment of an electrolyzing cell that can be used in accordance with the presently disclosed subject matter.
• Figures 10a-10c are top plan views of flow control means that can be used in some embodiments of the presently disclosed electrolyzing cell.
• Figure 1 1 is a front elevation view of one embodiment of an anode compartment of an electrolyzing cell that can be used in accordance with some embodiments of the presently disclosed subject matter.
• Figure 12a is a schematic representation of one embodiment of an electrolyzing cell that can be used in accordance with the presently disclosed subject matter.
• Figure 12b is a schematic representation of one embodiment of an electrolyzing cell that can be used in accordance with the presently disclosed subject matter.
• Figure 13a is a schematic representation of one embodiment of an electrolyzing cell that can be used in accordance with the presently disclosed subject matter.
• Figure 13b is a schematic representation of one embodiment of an electrolyzing cell that can be used in accordance with the presently disclosed subject matter.
• Figure 13c is a sectional view of one embodiment of a cathode chamber of an electrolyzing cell that can be used in accordance with the presently disclosed subject matter.
• Figure 14a is a schematic representation of one embodiment of an electrolytic cell that can be used in accordance with the presently disclosed subject matter.
• Figure 14b is a schematic representation of one embodiment of an electrolytic cell that can be used in accordance with the presently disclosed subject matter.
• Figure 15a is a front elevation view of one embodiment of a sachet that can be used in accordance with the presently disclosed subject matter.
• Figures 15b-15d are perspective sectional views of some embodiments of the sachet of Figure 5a taken along line 15b-15b.
• Figure 16a is one embodiment of a sachet that can be used with the presently disclosed subject matter.
• Figure 16b is a perspective view of one embodiment of a cartridge that can be used with the presently disclosed subject matter.
• Figure 16c illustrates one embodiment of a cartridge that can be used in accordance with the presently disclosed subject matter.
• Figure 17a is a perspective view of one embodiment of a blister pack sachet that can be used in accordance with the presently disclosed subject matter.
• Figure 17b is a sectional front elevation view taken along line 17b-17b of Figure 17a.
• Figures 17c and 17d illustrate one embodiment of the blister pack sachet of Figure 17b during use.
• Figure 18a illustrates one embodiment of a two compartment blister pack sachet in accordance with the presently disclosed subject matter.
• Figure 18b illustrates one embodiment of the sachet of Figure 18a during use.
• Figure 19a illustrates one embodiment of a two compartment blister pack sachet in accordance with the presently disclosed subject matter.
• Figure 19b illustrates one embodiment of the sachet of Figure 19a during use.
• Figure 20 is a schematic representation of one embodiment of a system that can be used to chemically produce a cleaning and/or sanitizing solution.
• Figure 21 is a schematic representation of one embodiment of a system that can be used to chemically produce a cleaning and/or sanitizing solution.
• Figure 22 is a schematic representation of one embodiment of a system that can be used to chemically produce a cleaning and/or sanitizing solution.
• Figure 23 is a perspective view one embodiment of an apparatus employing the presently disclosed cartridge.
• Figures 24a and 24b are cutaway views of one embodiment of a connection that can be used in the disclosed cartridge system.
• the presently disclosed subject matter is directed to a cartridge system that facilitates the easy replacement of consumables and wear components to reliably produce one or more cleaning and/or sanitizing solutions.
• the disclosed cartridge can in some embodiments comprise the components needed to electrochemically generate a sanitizing solution (such as, for example, an electrolyzing cell).
• the disclosed cartridge can comprise the chemical precursors used to generate at least one cleaning and/or sanitizing solution.
• the disclosed cartridge can comprise highly concentrated chemicals that can be diluted or rehydrated into cleaning and/or sanitizing solutions.
• the disclosed system can employ individual cartridges, cartridges with multiple elements, or a single cartridge that contains all of the consumables. The quantity of each consumable supplied in the cartridge is only enough to last for the chosen design life of the cartridge.
• the disclosed cartridge system eliminates the cost and time necessary for service and maintenance of the apparatus used to electrochemically and/or chemically generate cleaning and/or sanitizing solutions.
• the term "about”, when referring to a value or to an amount of mass, weight, time, volume, concentration, percentage, and the like can encompass variations of, and in some embodiments, ⁇ 20%, in some embodiments ⁇ 10%, in some embodiments ⁇ 5%, in some embodiments ⁇ 1 %, in some embodiments ⁇ 0.5%, and in some embodiments ⁇ 0.1 %, from the specified amount, as such variations are appropriated in the disclosed package and methods.
• adjacent refers to be being near or adjoining. Objects that are adjacent can be spaced apart from one another or can be in actual or direct contact with one another. In some embodiments, objects that are adjacent can be coupled to one another and/or can be formed integrally with one another.
• anode or "anode electrode” as used herein refers to the electrode in the electrolytic cell at which oxidation occurs when current is passed through the electrolytic cell.
• apparatus refers to equipment for generating cleaning, sterilizing, and/or sanitizing solutions.
• blister pack refers to a package that includes a rupturable or peelable sealing film of plastic, paper, aluminum foil and the like.
• the blister pack further comprises a rigid or semi-rigid well joined to form a sealed cavity that houses a dose of an active agent.
• the individual blisters of the blister pack can be arranged in any fashion, such as (but not limited to) a linear series of blisters or a matrix of blisters, and can be evenly spaced out or randomly positioned.
• Blister packs are generally known in the art. See, for example, U.S. Patent Nos. 7,784,250; 7,704,583; 7,623,040; and 7,489,594, the entire content of which is hereby incorporated by reference.
• the term “cartridge” refers to a container comprising at least one compartment for housing one or more components.
• the cartridge can be, in some embodiments, designed for a single use after which it is discarded.
• one or more compartments in a cartridge comprise a reagent, precursor, electrolytic cell, additive, water softening means, and the like, as set forth in more detail herein below.
• the term “catalyst” refers to any substance that increases the rate of a chemical reaction and is not itself consumed in an overall chemical or biological reaction.
• the catalyst can include (but is not limited to) metal oxides and heat.
• cathode or “cathode electrode” as used herein refers to the electrode in the electrolytic cell at which reduction occurs when current is passed through the electrolytic cell.
• chemical precursors refer to any combination of chemicals that can react to produce a desired chemical product.
• the chemical precursors sodium chlorite and citric acid can generate chlorine dioxide gas in the presence of water or water vapor.
• cleaning solution refers to an aqueous solution that is employed in the cleaning of one or more products.
• exemplary cleaning solutions and their uses are known in the art and can include (but are not limited to) chlorine dioxide solution, hypochlorous acid solution, sodium hydroxide solution, and the like.
• cleaning solution can refer to cleaning solutions, sterilizing solutions, produce conditioning solutions, and/or sanitizing solutions.
• concentrate refers to relatively condensed form of a product (such as a cleaning, sterilizing, and/or sanitizing solution) that can be diluted with a diluent to form a solution of desired concentration.
• a diluent can be water.
• consumable refers to anything that is used or consumed by an electrochemical or chemical reaction, or diluted or hydrated to produce a cleaning and/or sanitizing solution.
• consumables can include (but are not limited to) electrolyte supply, electrolytic cell, additives, chemical precursors, and the like.
• a desiccant refers to any material that absorbs, adsorbs, or reacts with water vapor and is thereby able to reduce the moisture in the air.
• a desiccant can be used to prevent premature initiation of a reaction initiated by water vapor.
• the desiccant can be in film or paper form, and in some embodiments can be used to separate the reactants to a chemical reaction.
• electrolytic solution or “electrolyzing solution” as used herein refers to an aqueous composition capable of being electrolyzed by the electrochemical cell and/or electrolyzing device described herein.
• an aqueous electrolytic solution can be any chemically compatible solution that can flow through the passage of the electrochemical cell, and that contains sufficient electrolytes to allow a measurable flow of electricity through the solution.
• Water except for de-ionized water, can include electrolytic solution, and can include: sea water; water from rivers, streams, ponds, lakes, wells, springs, cisterns, etc., mineral water; city or tap water; rain water; and brine solutions.
• An aqueous electrolytic solution of the present invention can be chemically compatible if it does not chemically explode, burn, and/or rapidly evaporate when placed inside the cell and/or device, or if it does not rapidly corrode, dissolve, or otherwise render the cell and/or device unsafe or inoperative, in its intended use.
• electrolytic cell refers to a composite comprising an anode, a cathode, and an ion-conducting electrolyte interposed therebetween.
• envelope as used herein to is meant to be construed broadly to include any type of container.
• an “envelope” refers to a closed receptacle sealed about its perimeter that houses a sachet.
• the envelope can be constructed from selectively permeable materials.
• filter refers to any substance that allows liquid to flow through to remove suspended particles, impurities, gases, and the like.
• the filter can comprise cloth, paper, porous porcelain, charcoal, polymeric material, and the like.
• frrangible refers to the characteristic of being breakable, and generally refers to a seal that can be compromised by a force or pressure to deliver a supply of material from a location on one side of the seal to a location on the other side of the seal.
• impermeable nonpermeable or “barrier” as used herein refers to articles not permitting the passage of a liquid, gas, or solid therethrough.
• initiator refers to a substance that initiates a chemical reaction.
• suitable initiators can include (but are not limited to) water and water vapor.
• module is used herein to collectively designate the plurality of components of any embodiment of the modular cartridge of the presently disclosed subject matter, such as additives, electrolytic cell, and the like.
• package as used herein is meant to be construed broadly to include any type of container. As set forth herein, in some embodiments, the package can be constructed from impermeable materials.
• a produce conditioning solution refers to a solution that can be used to wash and rehydrate produce while also controlling microorganisms and cross-contamination.
• a produce conditioning solution can be used to wash and disinfect fruits or vegetables, which can become contaminated with salmonella or other microorganisms in the field or elsewhere.
• the produce conditioning solution can reduce or eliminate populations of microorganisms and can prevent cross-contamination.
• Exemplary produce conditioning solutions are known in the art and will not be described in detail.
• pump includes all means of causing a controlled fluid flow, including controlled pumps or pressure sources and regulators.
• suitable pumps include peristaltic pumps, gear pumps, syringe pumps, electrokinetic pumps, gravity, compressed gas, controlled gas evolving devices, spring pumps, centripetal pumps, hand activated pumps, or any similar system known to those of ordinary skill in the art.
• replaceable as used herein is used with reference to an item designed to be used and discarded or recycled (such as a cartridge).
• the replaceable item can be easily removed from an apparatus without requiring disassembly of the apparatus and/or without the need for tools.
• sachet refers to a closed receptacle containing one or more components that can be used to produce a sterilizing solution.
• the sachet is closed in the sense that the chemical precursors used to generate the sterilizing solution are retained within the interior cavity of the sachet and the sachet volume is sealed around its perimeter.
• the term "sanitize” or “sanitizing” refers to the elimination of nearly all microbial forms, but not necessarily all.
• sanitizing solution refers to a solution that can be used to sanitize one or more products or surfaces.
• the sanitizing solution can comprise (but is not limited to) chlorine dioxide solution, hypochlorous acid solution, sodium hydroxide solution, and the like.
• sanitizing solution can refer to cleaning solutions, sterilizing solutions, produce conditioning solutions, and/or sanitizing solutions.
• selectively permeable refers to the ability of a selected membrane or other material to allow desired liquids, gases, and the like to migrate through the membrane, but not other materials. For example, in some embodiments, water vapor can pass through a selectively permeable membrane, but water will not. In some embodiments, the ability to be selectively permeable is based upon the size, surface charge, hydrophilicity, hydrophobicity, topology, or other considerations.
• sheet as used herein can be used interchangeably to describe articles that are processed into generally planar forms, either monolayer or multilayer.
• sheet can be used interchangeably with the term “film” in some embodiments.
• the term "sterilize” or “sterilization” refers to the destruction of all microbial life, including bacterial spores.
• sterilizing solution refers to a solution that can be used to sterilize one or more products.
• exemplary sterilizing solutions can include (but are not limited to) chlorine dioxide solution, hypochlorous acid solution, sodium hydroxide solution, and the like.
• exemplary sterilizing solutions can include (but are not limited to) chlorine dioxide solution, hypochlorous acid solution, sodium hydroxide solution, and the like.
• sterilizing solution can refer to cleaning solutions, sterilizing solutions, produce conditioning solutions, and/or sanitizing solutions.
• valve is broadly construed to include any apparatus that can be opened or closed to control the flow of a liquid or gas.
• well refers to any shape of a recessed portion capable of housing a chemical precursor, water, and the like within the interior thereof.
• cartridge 5 can comprise top face 10 and bottom face 15. In some embodiments, top face 10 and bottom face 15 can be parallel in relation to each other. Cartridge 5 can further comprise side faces 20, 25, front face 30, and rear face 35. In some embodiments, side faces 20 and 25 can be parallel in relation to each other. Similarly, in some embodiments, front and rear faces 30 and 35 can be parallel in relation to each other. Cartridge 5 contains a closed body having a confined space within the body to enclose one or more consumable components (such as, in some embodiments, an electrolyzing cell). Thus, cartridge 5 comprises at least one compartment within its interior. To this end, Figure 1 b illustrates one embodiment of a cartridge comprising more than one compartment. Particularly, compartments 40 and 45 are separated by wall 50.
• cartridge 5 can comprise gripping means 55 that can function as a handle for gripping the cartridge.
• gripping means 55 Any of a wide variety of gripping means known in the art can be incorporated into cartridge 5, including (but not limited to) notches, rods, handles, pull rings, bars, knobs, and the like.
• One of ordinary skill in the art would recognize that the presently disclosed subject matter also includes embodiments wherein cartridge 5 is configured without a gripping means.
• cartridge 5 can be rectangular in shape, although the presently disclosed subject matter is by no means limited to the embodiments illustrated in the Figures. To this end, cartridge 5 can take any shape and form, limited only by its ability to be placed within the disclosed apparatus without interfering with the components housed within the cartridge, as discussed in more detail herein below. Thus, cartridge 5 can be of any size or shape (e.g., square, rectangular, circular, ovoid, elongate, triangular, amorphous, and the like). To this end, the compartments housed within cartridge 5 can likewise take any shape or form.
• Cartridge 5 can be constructed from any of a wide variety of materials known in the art, including (but not limited to) plastics (including PVC, polyethylene, polypropylene, other polyolefins, foam plastics, rubberized plastics, and the like), metals (including stainless steel and the like), wood, composite materials (including carbon/graphite, Kevlar®, and fiberglass with an epoxy resin), and the like.
• plastics including PVC, polyethylene, polypropylene, other polyolefins, foam plastics, rubberized plastics, and the like
• metals including stainless steel and the like
• wood including carbon/graphite, Kevlar®, and fiberglass with an epoxy resin
• cartridge 5 can be constructed from durable, resilient plastic material that can help to protect the internal components from external impact and forces that might otherwise cause damage.
• Cartridge 5 can be constructed in a wide variety of ways.
• cartridge 5 can be constructed from molded plastic and can be attached to a housing through the use of adhesives, ultrasonic welding, or mechanical fasteners (such as screws).
• adhesives such as adhesives
• ultrasonic welding such as ultrasonic welding
• mechanical fasteners such as screws
• cartridge 5 can comprise a label or other identifier 120 printed or affixed to one or more faces.
• the identifier can identify the cartridge contents, intended use of the cartridge, and the like.
• Identifier 120 can include any of a wide variety of identification aids, including (but not limited to) colored tags, labels, bar codes, radio frequency identification (RFID) tags, and the like.
• RFID radio frequency identification
• the cartridges of Figures 2a, 2b, and 2c are identified as a food contact rinse cartridge, H1 N1 sanitation cartridge, and a general disinfecting cartridge, respectively. IV. Electrochemical Embodiments
• the presently disclosed subject matter is directed to a cartridge system that facilitates the easy replacement of consumables and wear components to reliably produce one or more sanitizing solutions.
• the disclosed cartridge can be used to electrochemically produce one or more sanitizing solutions.
• the disclosed cartridge can comprise some or all of the components necessary to electrolytically produce a sanitizing solution.
• the components can be supplied in the form of individual cartridges, cartridges with multiple elements, or a single cartridge that contains all of the consumables. The quantity of each consumable supplied in the cartridge is only enough to last for the chosen design life of the cartridge.
• cartridge 5 comprises at minimum, an inlet to supply fresh water, an electrical inlet to power the electrodes, and outlets for the solutions produced.
• Figure 3a illustrates one possible layout of cartridge 5, comprising fresh water inlet 60, electrical power inlet 65, and product outlets 70 and 75.
• the layout depicted in Figure 3a can be located on rear face 35 of the cartridge.
• product outlets 70 and 75 can comprise hypochlorous acid and sodium hydroxide solutions.
• a passive injection system such as a venturi
• additional electrical and/or water connections could be required.
• Such embodiments are also included within the scope of the presently disclosed subject matter.
• FIG 3b illustrates a schematic of one embodiment of the interior of the cartridge depicted in Figure 3a.
• Fresh water inlet 60 can optionally pass through filter 80 to remove particulates from the water, as discussed in more detail herein below.
• Fresh water can then be split into three passages and enter electrolyzing cell 85, which is powered by electricity supplied to electrode connections 90, 95.
• the output solutions leave electrolyzing cell 85 and optionally pass by additive compartments 100, 105 where additive is drawn into the stream by suction attributable to Venturis 110, 115.
• the output solutions then exit the cartridge at outputs 70, 75.
• One of ordinary skill in the art would appreciate that the presently disclosed subject matter is not limited to the schematic set forth in Figure 3b.
• an electrolyzing cell can be housed within cartridge 5.
• Electrolytic cells are understood by those of ordinary skill in the art. See, for example, U.S. Patent Nos. 4,214,958; 4,443,316; 5,106,465; 5,593,554; 5,616,221 ; 5,900,127; 6,294,073; 7,090,753; and 7,238,272, the entire disclosures of which are incorporated herein by reference.
• Electrolyzing cell 85 can take any shape or form that can be conducive to efficient electrolysis to produce sanitizing solutions. As depicted in the Figures, electrolyzing cell 85 can be rectangular in shape, although the presently disclosed subject matter is by no means limited to the embodiments depicted in the Figures.
• electrolyzing cell 85 can take any shape or form that can be conducive to efficient electrolysis.
• electrolyzing cell 85 can be of any size or shape (e.g., square, rectangular, circular, ovoid, elongate, triangular, amorphous, and the like).
• FIGS 4a and 4b illustrate one embodiment of an electrolyzing cell that can be used with the presently disclosed subject matter.
• electrolyzing cell 85 comprises top wall 125, bottom wall 135, front wall 145, rear wall 150, and side walls 130 and 140.
• the external walls can be constructed from any electrically non-conductive material known to those of ordinary skill in the art.
• molded plastic such as acrylonitrile butadiene styrene (("ABS")
• ABS acrylonitrile butadiene styrene
• electrolyzing cell 85 comprises three chambers including anode chamber 155, cathode chamber 160, and intermediate chamber 165.
• Anode chamber 155 comprises inlet 170 for fresh water and outlet 175 for acidic electrolyzed water (which in some embodiments can be hypochlorous acid solution).
• cathode chamber 160 comprises inlet 180 for fresh water and outlet 185 for alkaline electrolyzed water (which in some embodiments can be sodium hydroxide solution).
• Intermediate chamber 165 comprises inlet 190 for the input of fresh replenishment water.
• the electrolytic chambers can be constructed from any of a wide variety of materials that are resistant to the acidic and alkaline electrolyzed water solutions.
• the chambers can be constructed from organic materials (such as polyvinyl chloride, polypropylene, and/or acrylic resin), inorganic materials (such as ceramics and glass), or metal with surfaces lined with rubber or coated with a coating material.
• Anode electrode 195 and anion exchange membrane 196 separate anode chamber 155 from intermediate chamber 165.
• cathode electrode 200 and cation exchange membrane 201 separate cathode chamber 160 from intermediate chamber 165.
• the electrodes and the exchange membranes are optionally adhered together.
• Anion exchange membrane 196 allows anions (such as chlorine ions) to pass therethrough, thus supplying anions for the production of acid electrolyzed water.
• anion exchange membranes are well known in the art.
• a suitable anion exchange membrane can be a gel polystyrene cross linked with divinylbenzene in a chlorine ionic form, such as AMI-7001 Anion Exchange Membranes (available from Membranes International, Inc.
• cation exchange membrane 201 allows cations (such as sodium ions) to pass therethrough, thus supplying cations for the production of alkaline electrolyzed water.
• cation exchange membranes are well known in the art.
• a suitable cation exchange membrane is a gel polystyrene cross linked with divinylbenzene in a sodium ionic form, such as CMI-7000 Cation Exchange Membrane (available from Membranes International, Inc. of Ringwood, New Jersey, United States of America).
• Figure 5a is a schematic representation of one embodiment of electrolyzing cell 85. Specifically, fresh water enters the cell through common port 205 and is split three ways. One flow enters anode chamber 155, one flow enters cathode chamber 160, and one flow enters intermediate chamber 165. Intermediate chamber 165 houses electrolyte and is kept full of water by the pressure of the fresh water. A power supply (not shown) applies a DC voltage to the positive and negative terminals that power the electrodes (also not shown).
• Electrolytic solution 211 is a liquid that is electrolyzed into cations and anions by the application of electrolytic voltage.
• Preferred electrolytic solutions contain at least some halogen ions, including (but not limited to) chloride, chlorite, bromide, bromite, iodide, and iodite, and mixtures thereof.
• electrolyte solution 211 can comprise sodium chloride, potassium chloride, calcium chloride, or combinations thereof.
• electrolyte solution 211 can comprise a wide variety of electrolytes.
• the electrical current supply provides a flow of electrical current between the electrodes and across the passage of electrolytic solution passing across the anode.
• Two outputs are produced which in some embodiments can be cleaning and/or sanitizing solutions.
• the cleaning and/or sanitizing solutions can be hypochlorous acid solution 215 and sodium hydroxide solution 220.
• the electrolytically-produced cleaning and/or sanitizing solutions are not limited to hypochlorous acid and sodium hydroxide solutions and can include any solution that can function in sanitizing and/or cleaning applications.
• FIG. 5b illustrates an alternate schematic representation of an electrolytic cell that can be used with the presently disclosed subject matter.
• the electrolyzing cell of Figure 5b before fresh water enters intermediate chamber 165, it enters a saline circulation system through flow control means 225 that adds fresh water to the replenish the system as needed.
• electrolyte supply is housed in electrolyte chamber 226.
• Pump 230 circulates the electrolyte solution through intermediate chamber 165 that supplies the electrolytes for the electrochemical reaction.
• the circulation system ensures that electrolyte solution is consistent and homogenous and that there is no stratification of solution density that could change the output.
• a power supply (not shown) applies a DC voltage to positive and negative terminals 235 and 240 that power the electrodes.
• the electrolyte solution is electrolyzed.
• an anion for example, a chloride ion
• a cation for example, a sodium ion
• anode 195 can include (but is not limited to) porous or high surface area anodes.
• Figure 6a illustrates one embodiment of anode 195.
• the anode comprises a plurality of pores 245 to provide passages for electrolytic water passing over the electrode surface to utilize the electrolysis product more efficiently. As a result, the electrolytic water flows not only on the electrode surface but also thorough the pores in the electrode.
• anode 195 can be a porous or flow-through anode that has a large surface area and a large pore volume sufficient to pass a large volume of electrolytic solution therethrough.
• anode 195 of the presently disclosed subject matter is not limited to the structure set forth in Figure 6a and can include any anode electrode so long as it can effectively conduct electricity through the aqueous electrolytic solution between itself and another electrode.
• anode 195 comprises tab 246 that provides the electrical connection to the power supply.
• Anode 195 can be constructed from any of a wide variety of electrically conductive materials known in the art, including (but not limited to) titanium, tantalum, aluminum, zirconium, tungsten, stainless steel, platinum, iridium, ruthenium, iron, nickel, chromium, and alloy and metal oxides thereof. In some embodiments, anode 195 requires a material without iron content. In some embodiments, anode 195 can be coated with a catalyst. Any of a wide variety of catalysts known in the art can be used, such as (but not limited to) platinum, iridium, ruthenium, and/or oxides, alloys and mixtures thereof. In some embodiments, the anode can be coated with a catalyst having a thickness of at least 0.1 micron.
• electrolyzing cell 85 is incorporated as an integral part of cartridge 5.
• anode 195 can be built as a robust piece that lasts indefinitely and remains with the apparatus as a member that enters the cartridge when replaced.
• anode 195 can be attached to apparatus 330.
• cartridge 5 comprises opening 331 sized to fit anode 195. In use, a user would simply insert anode 195 into opening 331 as depicted in Figure 6c.
• cathode 200 can be a porous or high surface area cathode.
• cathode 200 can take the form of anode 195 as illustrated in Figure 6a, including pores 245 and tab 246.
• a cathode of the presently disclosed subject matter is not limited to the structure set forth in Figure 6a and can include any cathode so long as it can effectively conduct electricity through the aqueous electrolytic solution between itself and another electrode.
• Cathode 200 can be constructed from any of a wide variety of electrically conductive materials known in the art, including (but not limited to) titanium, tantalum, aluminum, zirconium, tungsten, stainless steel, platinum, iridium, ruthenium, iron, nickel, chromium, and alloy and metal oxides thereof.
• FIG 7 illustrates one embodiment of the electrolyzing cell of Figures 4a and 4b in use.
• intermediate chamber 165 is partially filled with electrolyte solution 211.
• Electrolyte chamber 165 is filled with electrolyte when the cartridge is new.
• electrolyte chamber 165 is flooded with water and is replenished with fresh water as the electrolyte and water are consumed by the electrochemical process.
• the amount of electrolyte, and therefore the dimensions of electrolyte chamber 165 can be sized to last the design life of the cartridge.
• 1 gram of electrolyte and 1 ml_ of water can be used for each 10 gallons of solution produced.
• the minimum electrolyte chamber volume is 2.8 in 3 (to produce 1 ,000 gallons), and the electrolyzing cell can be designed accordingly.
• electrolyzing cell 85 can comprise separator 250 positioned on both sides of intermediate chamber 165 (i.e., in the intermediate chamber, adjacent to anion and cation exchange membranes 196 and 201 ).
• Separator 250 functions to contain electrolyte within the intermediate chamber. As a result, undissolved electrolyte is prevented from coming into direct contact with anion and cation exchange membranes 196 and 201. In this manner, the entire surfaces of the exchange membranes are in contact with a constant electrolytic solution.
• Separator 250 can be constructed from any material with pores large enough to allow electrolytic solution to pass through, but small enough to prevent crystalline salt from passing through.
• separator 250 can be constructed from open cell elastomer foam, mesh screens, porous diaphragms, and the like, as would be readily apparent to those having ordinary skill in the art.
• separator 250 can include Scotch-BriteTM Ultra Fine Pad #7448 (available from 3M Corporation, St. Paul, Minnesota, United States of America). It is to be understood that the presently disclosed subject matter includes embodiments wherein electrolyzing cell 85 lacks separator 250.
• electrolyzing cell 85 can comprise flow control unit 255, as depicted in Figure 9.
• Figure 9 illustrates anode chamber 155 of an electrolyzing cell configured with a flow control unit.
• flow control unit 255 can easily be configured in cathode chamber 160, both anode and cathode chambers, or in neither chamber.
• Flow control unit 255 is a porous device that functions to impede the passage of water in a controlled fashion. When installed, water flow velocity in the vicinity of electrode 195 is restricted and electrolyzed at a higher concentration.
• water outboard 256 (water that is not within the flow control means) is unrestricted, it will flow at a higher rate. Specifically, the reduced velocity and higher concentration near the electrode mimics a narrow, low flow chamber and increases electrolyzing efficiency. The concentration of the output will be controllable by adjusting flow rate and/or electrical current.
• Flow control unit 255 can be constructed from any of a wide variety of materials known in the art.
• the flow control unit can comprise mesh pad 260 constructed from nylon or other suitable material.
• flow control means 255 can be configured as porous block 265 constructed from materials that range from cellulose to stone.
• Figure 10c illustrates that in some embodiments, flow control unit 255 can be constructed from mesh screen material 270 that can be used on its own or stacked to obtain a desired flow control means thickness.
• the porosity of flow control unit 255 can be selected to adjust the resistance to flow and therefore "tune" the flow to the preferred concentration.
• 300 micron woven thermoplastic mesh sheet #9318T45 available from McMaster Carr Supply Company, Santa Fe Springs, California, United States of America
• 300 micron woven thermoplastic mesh sheet #9318T45 available from McMaster Carr Supply Company, Santa Fe Springs, California, United States of America
• electrolyzing cell 85 can be configured without a flow control unit, as depicted in Figure 1 1 .
• fresh water enters anode chamber 155 through inlet port 170 and electrolyzed water exits the chamber through outlet port 175.
• Electrolysis only occurs in the vicinity of electrode 195, with the highest concentration in area 197 nearest the electrode and the lowest concentration in area 198 along the outer wall. Because there is no obstruction to flow inside the chamber, the flow velocity is substantially consistent across width 199 of the electrolyzing cell.
• cartridge 5 can comprise one or more filters 80.
• filter 80 can be positioned as a pre- filter which can be desirable in environments where the fresh water supply comprises sediment and/or other contaminants that can cause premature deterioration of the electrolyzing cell performance.
• fresh water enters cartridge 5 at common port 205 and passes through filter 80 before being separated into three inlet supplies.
• the water then enters electrolyzing cell 85 and exits the cell as acidic and alkaline electrolyzed water solutions 215 and 220 (which can be, in some embodiments, hypochlorous acid and sodium hydroxide solutions).
• filter 80 can be positioned in an output location.
• excess chlorine gas can be produced in anode chamber 155 of electrolyzing cell 85. As illustrated in Figure 12b, the excess chlorine gas can be eliminated by positioning filter 80 on the output of the system.
• fresh water enters cartridge 5 at common port 205 and is separated into three inlet supplies before entering electrolyzing cell 85. The electrolyzed water exiting from the anode side of the electrolyzing cell can then pass through filter means 80 before exiting the cartridge.
• filter 80 is not limited and can take any shape or form known to those of ordinary skill in the art.
• filter 80 can comprise, for example, activated charcoal, although any suitable filtering means known in the art can be used.
• filter 80 can be constructed from paper, cellulose, polypropylene, activated carbon, and the like.
• the filter medium can be selected to correct water quality problems on a regional basis, for an individual type of water issue, and/or for general filtering.
• filter means 80 can be sized for the life of the cartridge. Filters suitable for use with the presently disclosed subject matter are known in the art, and can include the following: U.S. Patent Nos.
• cartridge 5 can comprise water softener 280 to reduce the dissolved calcium, magnesium, manganese, and/or ferrous iron ion concentration in hard water.
• Figure 13a illustrates one embodiment of an electrolyzing cell comprising water softener 280.
• the input water enters cartridge 5 at common port 205 and can optionally be filtered using filter 80 prior to routing through water softener 280. Water is then separated into three inlet supplies before entering electrolyzing ceil 85.
• water softener 280 can be positioned in the cathode chamber supply after the water supply is split, as illustrated in Figure 13b. In this manner, only the water entering the cathode chamber is softened, and therefore can be approximately half the size needed to soften the entire water supply.
• water softener 280 can be positioned inside cathode chamber 160, as illustrated in Figure 13c.
• water softener 280 can comprise an exchange resin constructed from a synthetic or natural sand-like material coated with positively charged sodium ions, although the presently disclosed subject matter includes any of a wide variety of water softening means known in the art. The choice of softening media and quantity necessary for a given application would be apparent to those of ordinary skill in the art.
• water softener 280 can be supplied as a separate cartridge or as an element in a combined cartridge, and the amount of media can be calculated for the chosen design life to keep it as small and inexpensive as possible. Water softener 280 can optionally be used in conjunction with the filtering means described herein above.
• cartridge 5 can comprise one or more additional additives.
• various additives can be added to the acidic and alkaline electrolyzed water solutions produced by the electrolyzing cell.
• additives can include (but are not limited to) scents (such as citrus, herbal, and the like), colorants (such as dyes, food colorings, and the like), gelling agents, surfactants (which can include foaming agents, emulsifiers, dispersants, and the like), and/or anti-biological agents.
• additives 285 can be configured on the outputs of electrolyzing cell 85. Alternatively or in addition, in some embodiments, additives 285 can enter on the input side as illustrated in Figure 14b. As with the electrolyte, filtering means, and water softening elements discussed herein above, only enough additive is included to last for the design life of cartridge 5.
• additives 285 can be positioned in separate cartridges, or in a combination cartridge with any or all of the previously disclosed components. Unlike the electrolyte, filter, and water softener (which are pass-through elements), additives 285 must be placed into the streams in a metered fashion, which can be accomplished in a number of ways, including the use of a metering pump or venturi suction device, as would be known to those of ordinary skill in the art. ⁇ A Concentrated Precursor Embodiments
• cartridge 5 can comprise cleaning and/or sanitizing precursors that can be pre-prepared and supplied in a highly concentrated form.
• the quantity of concentrate is enough to last for the design life of the cartridge.
• the concentrates can be used in lieu of an electrolyzing cell, or used in conjunction with the cell to produce an alternate formulation of the cleaning and/or sanitizing solution.
• cleaning and/or sanitizing precursors can be supplied as a concentrate in a cartridge.
• the apparatus can mix water with the concentrated precursors to get a desired concentration.
• the concentrate can be a commercially available concentrate, such as a quarternary ammonium product (for example, SanibetTM, available from Betco of Toledo, Ohio, United States of America). Quarternary ammonium is widely used as a cleaner and sanitizer at concentrations of about 200 parts per million ("ppm").
• the SanibetTM product requires one ounce of concentrate in 4 gallons of water to achieve 200 ppm. If the system batch size is 30 gallons, the cartridge will contain 7.5 ounces of concentrate to prepare one batch.
• Other chemical concentrates can be used to produce other solutions, such as degreasers and detergents. More highly concentrated precursors can be used to make the cartridge even smaller in size.
• liquid concentrates can be added to the fresh water supply by various methods, including venturi suction devices, micro pumps, syringe devices, or other means known in the art.
• Solid or powdered concentrates can also be used with some form of metering means.
• the supply water can simply pass through the cartridge housing the concentrate and dissolve or absorb the concentrate along the way.
• additives can be included in the cartridge.
• the presently disclosed subject matter is directed to a cartridge system that facilitates the easy replacement of consumables and wear components to reliably produce one or more cleaning and/or sanitizing solutions.
• the disclosed cartridge houses one or more chemical precursors that can be combined to produce one or more cleaning and/or sanitizing solutions.
• the quantity of each consumable supplied in the cartridge is only enough to last for the chosen design life of the cartridge.
• the sanitizing solution can be a chlorine dioxide solution.
• Chlorine dioxide is generally produced on site because it is an unstable compound with a short shelf life and is not practical to store or transport.
• the chemical precursors can be sodium chlorite and citric acid, although the presently disclosed subject matter is not limited and can include any reactants that can be combined in the presence of an initiator to generate chlorine dioxide or other sanitizing agents.
• the initiator can be water or water vapor.
• chlorine dioxide gas is generated when sodium chlorite and citric acid are combined in the presence of water or water vapor. The chlorine dioxide gas can then be absorbed by water to produce a chlorine dioxide solution.
• the reaction can be initiated when the chemical precursors are exposed to water, when a small amount of water is packaged with the chemical precursors, and/or when water is injected into the chemical precursors.
• cartridge 5 comprises at least one sachet.
• the sachet can house the chemical precursors needed to generate a sterilizing solution.
• Figures 15a and 15b illustrate one embodiment of sachet 400. Specifically, sachet 400 is sealed on edges 401 using heat seal, adhesive, or any other method known in the art to enclose the sachet contents within its interior. Sachet 400 further comprises outer package 405, inner envelope 410, and chemical precursors 415.
• Outer package 405 is a hermetically sealed non-permeable package that houses inner envelope 410 within outer cavity 412.
• outer package 405 can be constructed from any of a wide variety of non-permeable materials, including (but not limited to), aluminum foil, plastic foil, treated paper, and the like.
• outer package 405 can be a formed or molded part constructed from plastic and/or similar materials.
• outer package 405 can take any of a wide variety of shapes, such as rectangular, square, round, and the like and is not limited to the shape set forth in the Figures.
• outer package 405 can comprise indicator 420, which can include a bar code, RFID, or other identifying means that can be read by the apparatus.
• inner envelope 410 houses chemical precursors 415.
• Inner envelope 410 is constructed from a selectively permeable material that allows water vapor to pass therethrough and contact chemical precursors 415 housed within inner cavity 411.
• inner envelope 410 allows generated chlorine dioxide gas to pass therethrough and exit the envelope.
• the inner envelope is impermeable to liquid water.
• Inner envelope 410 can be constructed from any of a wide variety of selectively permeable materials known in the art, including (but not limited to) polypropylene, polyethylene, and polysulfone membrane.
• inner envelope 410 can be constructed from polypropylene membrane filter material PP045 (available from Sterlitech Corporation, Kent, Washington, United States of America).
• Chemical precursors are ultimately combined with an initiator (which in some embodiments can be water vapor) to generate chlorine dioxide gas.
• the chemical precursors can be sodium chlorite and citric acid.
• the presently disclosed subject matter is not limited to the generation of chlorine dioxide by sodium chlorite and citric acid. Rather, the disclosed system includes the wide variety of metal chlorites and acids that can be used to generate chlorine dioxide.
• Chemical precursors 415 can be in tablet, capsule, or powder form and can be mixed or separated. The absolute and relative quantities of chemical precursors 415 can be selected based on the quantity and rate of chlorine dioxide production desired. Such routine experimentation is known to those of ordinary skill in the art.
• At least one additive can also be housed within inner cavity 411 of inner envelope 410.
• Such additives can include (but are not limited to) desiccants, scents, surfactants, colorants, gelling agents, and the like and can be in pellet, powder, film, paper or other forms.
• Figure 15c illustrates one embodiment of sachet 400 wherein desiccant 425 is in paper form and is positioned within inner cavity 411 of inner envelope 410 to separate chemical precursors 415.
• any additive can be substituted for desiccant 425 in the above description.
• FIG 15d illustrates one embodiment of sachet 400 wherein outer cavity 412 comprises inner envelope 410 housing chemical precursors 415, as well as frangible pouch 414 comprising water 413.
• Frangible pouch can be any container comprising at least one frangible seal, as would be apparent to those of ordinary skill in the art.
• a user or the apparatus disclosed herein can rupture the frangible seal of frangible pouch 414, thereby releasing the water housed therein within outer cavity 412. As a result, water vapor can pass through inner envelope 410 to initiate the reaction between chemical precursors 415.
• the chemical reaction used to generate chlorine dioxide gas can be contained within a reaction chamber to control the passage of water and absorption of chlorine dioxide.
• a reaction chamber to control the passage of water and absorption of chlorine dioxide.
• sanitizers such as iodine-based or bromine-based solutions, as well as other forms of chlorine, if the correct reactants are used.
• Such sanitizers are well known to those of ordinary skill in the art.
• outer package 405 can function as the reaction chamber.
• Figure 16a illustrates one embodiment wherein sachet 400 is used as the reaction chamber.
• Sachet 400 comprises entry port 440 and exit port 445 that are aligned with an attaching means, piercing cannula, or the like that makes a hydraulic connection.
• water passes through outer package 405 at entry port 440 into outer cavity 412 at a predetermined rate.
• water vapor passes through the selectively permeable membrane of the inner envelope to contact chemical precursors 415.
• Entry and exit ports 440, 445 can be constructed using any means known in the art, including (but not limited to) needle puncture directly in outer package 405.
• entry and exit ports 440, 445 can be valves (such as simple diaphragms or duckbills) that mate with the apparatus, sections of self- sealing material (such as the material used in medical syringe bottles), or other systems known in the art.
• Figures 16b and 16c illustrate an alternate embodiment wherein outer package 405 is configured as a formed or molded part.
• the interior of outer package 405 is divided into upper section 408 and lower section 407 by selectively permeable membrane 409.
• Selectively permeable membrane 409 can be constructed from any selectively permeable material that allows water vapor and chlorine dioxide gas to pass therethrough.
• selectively permeable membrane 409 can be constructed from polypropylene membrane.
• selectively permeable membrane 409 is impermeable to liquid water.
• chemical precursors 415 are housed within lower section 407.
• upper section 408 comprises entry and exit ports 440, 445.
• upper section 408 can house the chemical precursors and lower section 407 can house the entry and exit ports.
• water enters upper section 408 through entry port 440, as depicted by Arrow A. Water then passes through the upper section and exits at exit port 445, as illustrated by Arrow B.
• water vapor passes from upper section 408 through selectively permeable membrane 409 into lower section 407 to contact chemical precursors 415.
• chlorine dioxide gas is generated in lower section 407 and passes through selectively permeable membrane 409 to upper section 408 and is absorbed by the water passing from entry port 440 to exit port 445.
• water exits the unit as chlorine dioxide solution.
• water can be directly injected into lower section 407 by a user or by the apparatus.
• water and/or water vapor contact the chemical precursors and chlorine dioxide gas is generated.
• the chlorine dioxide gas then passes through selectively permeable membrane 409 into upper section 408 and is absorbed by water to produce a chlorine dioxide solution, as described above with regard to Figure 16c.
• sachet 400 can be a blister pack sachet.
• blister sachet 460 includes forming sheet 465, barrier sheet 470, and selectively permeable sheet 475 positioned in a face-to-face relationship.
• Forming sheet 465 is of the type conventionally used in the production of blister packs and in some embodiments can be constructed from metallic foil, polymeric material, and the like. In some embodiments, forming sheet 465 can be produced by, for example, a thermal drawing process. As illustrated, forming sheet 465 is provided with at least one well 480 surrounded by flange 485. Well 480 can assume any of a wide variety of shapes and is of sufficient size to house precursors 415 (and optionally one or more additives).
• Selectively permeable sheet 475 is sealed to flange 485 via adhesive, heat seal, or any other method known in the art to enclose well 480.
• Permeable sheet 475 can be constructed from any of a wide variety of selectively permeable materials known in the art, including (but not limited to) polypropylene membrane.
• Selectively permeable sheet 475 allows water vapor and chlorine dioxide gas to pass therethrough, as described in more detail herein below.
• the selectively permeable sheet is impermeable to liquid water.
• Barrier sheet 470 is sealed to selectively permeable sheet 475 using any method known in the art, including adhesive and heat seal technology.
• barrier sheet 470 can be constructed from any of a wide variety of non-permeable materials, including (but not limited to), aluminum foil, plastic foil, and the like.
• barrier sheet 470 can be removed by a user or automatically by the apparatus to initiate production of the sterilizing solution.
• blister sachet 460 is then placed inside a chamber and the reaction is initiated by any of the methods previously disclosed such that the sachet becomes the reaction chamber (such as the method disclosed above for sachet 400).
• supply water represented by arrow W
• multiple blister sachets can be supplied on a roll, sheet, linear package, concentric ring, strip, or any other preformed interconnection, wherein each sachet contains the quantity of chemical precursors needed for one batch of sanitizing solution.
• the blister sachet can have perforations that allow one sachet (sized for one batch of sanitizing solution) to be separated from the other sachets by tearing it away from the rest of the blister sachets.
• the individual blister sachets can be separated prior to use or can be separated prior to bulk packaging.
• sachets can be loaded into the apparatus, which then indexes them into and out of the location at which they are reacted.
• the operator does not need to change the cartridge for each batch of solution, allowing the apparatus to run in a more automatic manner. Reacted sachets thus can remain in a protected location within the apparatus while the remaining sachets are used, ensuring that the chemicals are completely reacted, and the sachet is dry before the operator handles the pack.
• blister sachet 460 can be divided into two compartments by a selectively permeable membrane.
• the selectively permeable membrane can be constructed from any of a wide variety of selectively permeable materials known in the art, including (but not limited to) polypropylene membrane.
• the selectively permeable membrane allows water vapor and chlorine dioxide gas to pass therethrough. In some embodiments, the selectively permeable membrane does not allow water to pass therethrough.
• Figure 18a illustrates one embodiment of a two compartment blister sachet that can be used with the presently disclosed subject matter.
• selectively permeable membrane 490 divides well 480 into upper compartment 495 and lower compartment 500.
• Upper compartment 495 can be a water supply compartment and lower compartment 500 can house chemical precursors 415 (and optionally additives).
• chemical precursors 415 and optionally additives.
• the two compartment blister sachet can be a formed blister, as illustrated in the embodiment of Figure 17 with a more complex shape that leaves a flat section between the upper and lower compartments.
• Membrane 490 can then be adhered to the flat section by any suitable method known in the art, including adhesive and/or heat sealing.
• upper compartment 495 In use, water is passed through upper compartment 495 using any of a wide variety of methods known in the art.
• upper compartment 495 can be pierced using a sharp instrument (such as a cannula 515) or similar device.
• the cannula will deposit water into upper compartment 495 via input cannula 515a and direct water out of the sachet as chlorine dioxide solution via exit cannula 515b, as illustrated by the arrows.
• water will flow from input cannula 515a across selectively permeable membrane 490.
• the two compartment blister sachet can be configured as set forth in Figure 19a.
• the sachet can comprise upper and lower wells 495, 500.
• the blister sachet of Figure 19a can be constructed by forming the upper and lower wells as separate blisters that are sealed together once the reactants and membrane are inserted.
• the blister can be of a clamshell design such that once the reactants and membrane are placed into one side, the clamshell is folded over and sealed using adhesive and/or heat sealing technology known in the art.
• selectively permeable membrane 490 separates upper and lower wells 495, 500.
• Selectively permeable membrane 490 can be constructed from any of a wide variety of selectively permeable materials known in the art.
• the selectively permeable membrane can allow water vapor and chlorine dioxide gas to pass therethrough.
• the selectively permeable membrane can be constructed from polypropylene membrane.
• upper well 495 In use, water is enters upper well 495 using any of a wide variety of methods known in the art.
• upper well 495 can be pierced using a sharp instrument (such as a cannula 515) or similar device.
• the cannula will deposit water into upper well 495 via input cannula 515a.
• the water will flow from input cannula 515a across membrane 490 and exit upper well 495 via exit cannula 515b.
• water vapor passes through membrane 490 and enters lower well 500 to contact chemical precursors 415, thereby generating chlorine dioxide gas.
• the generated gas will pass from lower well 500, through membrane 490 and into upper well 495 and will be absorbed by the water.
• water that leaves the sachet via exit cannula 515b will be in the form of chlorine dioxide solution.
• a catalyst can be used to increase the rate and completion of the reaction.
• the catalyst can be a chemical catalyst, such as (but not limited to) palladium, noble metals, transition metals, zeolites (aluminosilicate), electromagnetic energy, and ultraviolet light.
• heat can be used as a catalyst to increase the rate of chlorine dioxide production.
• the water that flows around the sachet can be heated, or the cartridge itself can be heated with a hot plate or other surface heater.
• the heater can be included as part of the cartridge, or as an integral part of the apparatus.
• an exothermic chemical reaction that produces heat can be used, such as (but not limited to) Portland cement, or similar chemicals that can be intermixed to produce heat.
• the generating apparatus disclosed herein is an automatic or semiautomatic device into which cartridge 5 is inserted.
• the apparatus is attached to a source of water controlled through the cartridge to create the sanitizing solution.
• the apparatus then stores and dispenses the prepared sanitizing solution.
• FIG 20 illustrates a schematic of the basic components of one embodiment of a system that can be used to produce a sanitizing solution (such as chlorine dioxide solution).
• a sanitizing solution such as chlorine dioxide solution
• valve 555 can be any of a wide variety of suitable valves known in the art.
• valve 555 can be an on/off valve or a flow control valve that adjusts the flow rate of the system.
• valve 555 can be automatic, requiring no input from an operator.
• the presently disclosed subject matter also includes embodiments wherein valve 555 is controlled by an operator.
• a cartridge or a sachet (not shown) is placed inside reaction chamber 560 by snap-fit, or other similar interlocking mechanisms. During operation, water passes through chamber 560 and then through, around, or adjacent to the sachet or cartridge.
• chamber 560 can include retractable needles, mated fittings, or other devices to connect and conduct the water, as described herein above.
• the chemical reaction is initiated by any of the initiation methods described herein above.
• the sachet comprises a frangible pouch housing water
• the chamber can contain a device to rupture the frangible pouch.
• water injector 565 can be used to supply water for initiation.
• Water injector 565 can comprise (but is not limited to) one or more retractable needles, needless syringes, mated fittings, bypass systems, and the like.
• chamber 560 can comprise heater 570 to catalyze the reaction.
• chamber 560 can comprise a reading device (not shown), as are well known in the art.
• chamber 560 can comprise a pressing device (not shown) to press the sachet after use to squeeze the water from it for drip-free disposal.
• heater 570 can be used after completion of the reaction to aid in drying cartridge 5.
• reservoir 580 can comprise level indicator 585 to monitor the amount of water present in the reservoir and the rate at which the reservoir is filling.
• Level indicator 585 can be any of a wide variety of level indicators known in the art, including (but not limited to) pressure transducers, level floats, and the like. An operator can use level indicator 585 to determine when reservoir 580 is full or empty and to determine how much chlorine dioxide solution remains in the reservoir to control the start/stop of the fresh water flow. If used to monitor the rate of fill, level indicator 585 can be used in conjunction with flow control valve 555 to control the rate of fresh water flow through chamber 560.
• the output of solution entering the reservoir will remain at a relatively constant 3 ppm of chlorine dioxide.
• a fixed flow orifice can be used, and the inlet valve can be opened until the level indicator reads full and then closed.
• the system can comprise at least two dispenser outlets 590, 591 which can be high pressure, low flow outlets for misting applications.
• the dispenser outlets can be low pressure, high flow outlets to fill sinks.
• the dispenser outlets can be a combination of high pressure, low flow and low pressure, high flow outlets.
• Dispenser outlets 590, 591 can be fed by one or more pumps 595, 596.
• the presently disclosed subject matter can also include alternate dispensing options, such as the filling of detachable containers, spray bottles, and the like for hard surface cleaning and other similar applications.
• system 501 can comprise a water circulation means, as illustrated in Figure 21 .
• fresh water 550 enters chamber 560 and fills the reservoir as described above. However, once the reservoir is filled, water then flows through conduit 600 and is pumped (via pump 605) back into the inlet of the chamber where it absorbs more chlorine dioxide and continues recirculating. In these embodiments, the water can be recirculated for as long as necessary to complete the reaction.
• system 501 can comprise a water accumulator.
• water accumulator 615 can comprise a diaphragm or other device to compress and store the energy used to pump the water.
• Fresh water inlet valve 555 is opened to fill the accumulator and compress the diaphragm using the pressure of the fresh water source.
• water accumulator 615 can hold the amount of water needed for one complete batch of solution. Once filled, inlet valve 555 is closed and outlet valve 620 is opened. The stored energy pushes the accumulated water through chamber 310 where it absorbs chlorine dioxide and then enters reservoir 580 and is ready for use.
• the system illustrated in Figure 22 provides a failsafe for the chlorine dioxide reaction.
• accumulator 615 can be a simple storage tank placed above the chamber and reservoir, using gravity to feed the water into the system once the tank has been filed by the fresh water inlet.
• system 501 can comprise two or more reservoirs (along with the necessary controls and plumbing) to generate a second (or more) batch of solution while the first batch is being used to ensure that there is always a solution prepared and ready for use.
• Figure 23 illustrates one embodiment of apparatus 503 configured for commercial or other use.
• apparatus 503 comprises base 295 containing a plurality of components, and can be used for mounting on a wall or other means.
• controller 300 can house the electronics necessary to operate the components of cartridge 5 (such as, for example, electrolyzing cell 85), and can include display panel 305.
• the presently disclosed subject matter comprises a means for communicating to the consumer when it can be time to refill or replace the cartridge 5.
• the communication means can comprise an indicator and optionally a timer and/or sensor.
• Suitable examples of communication means, communication devices, and methods of using communicating devices can include, but are not limited to, those found in the following: U.S. Pat. Nos.
• plumbing controls can be enclosed in plumbing compartment 310.
• the unit can be attached in some embodiments to a water supply and drain (not shown) and/or to a standard 120 or 240 volt electrical supply (also not shown).
• storage tanks 315 hold a quantity of the cleaning and/or sanitizing solutions to be ready for dispensing.
• Refillable spray bottle 316 illustrates one method of dispensing, although any of a wide variety of dispensing means known in the art can be used.
• FIG. 24a illustrates cartridge section 325 and apparatus 330.
• Apparatus 330 comprises nipple 335 in fluid communication with its appropriate internal plumbing.
• nipple 335 comprises o-ring 340 inserted into a groove.
• the cartridge includes receptacle 345 in fluid communication with its appropriate internal plumbing.
• the disclosed cartridge system facilitates the easy replacement of consumables and wear components housed within the cartridge. Particularly, the quantities of each consumable supplied are only enough to last for the chosen design life of the cartridge. For example, if the cartridge is designed to electrolytically make 1000 gallons of product at 10 gallons per hour, it will contain only enough electrolyte to produce 1 ,000 gallons of product. To this end, water filtering and conditioning elements can also be designed to last the same length of time.
• cartridge 5 When cartridge 5 reaches the end of its service life, it is easily removed and replaced by a user. In this manner, none of the consumables will be wasted, as all will run out at approximately the same time. In addition, there will be minimal downtime of the apparatus.
• the components that are not replaced with cartridge 5 are designed to last for an extended period of time.
• the disclosed system virtually eliminates the cost and time necessary for service and maintenance of the apparatus due to the rapid and simple replacement of the cartridge, and the longevity of the non-cartridge elements.
• the disclosed system comprises the ability to alter the sanitizing solution output and/or to compensate for input water quality by simply using a cartridge that contains different elements.
• the contents of cartridge 5 can be tuned for regional or individual differences in water supply, or preferences in the desired outputs by adding, removing, or altering items such as filtering, water softening, or chemical additives.
• the flow of input water can be controlled and designed to produce a sanitizing solution of a desired concentration.
• cost is greatly reduced and the complexity of the cartridge can be decreased.
• a user can easily adjust flow rate or other variables to generate the desired concentration of sanitizing solution.
• the presently disclosed subject matter is directed to a limited lifetime, low cost, and disposable electrolyzing cell that can be utilized in a cartridge system.
• developments in the industry are focused on longevity and efficiency, continually adding to the cost and complexity of the electrolyzing apparatus.
• the presently disclosed subject matter therefore significantly removes cost from the electrolyzing cell and purposefully gives it a designed life span.
• the sanitizing solution can be prepared in a batch process in the chemical and precursor embodiments set forth herein.
• the reaction rate is more rapid at the beginning of the reaction, when there is the largest amount of unreacted precursors. As the precursors are consumed, the reaction rate slows.
• the fresh water flow rate can be controlled so that the reaction is complete before all of the water has been supplied.
• the remaining water acts to flush the cartridge after the reaction, leaving the cartridge benign, i.e. containing no reacting chemical. As the flushing water enters the reservoir, it mixes with the rest of the water and the resulting solution is at the correct concentration.

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• Chemical & Material Sciences (AREA)
• Organic Chemistry (AREA)
• Water Supply & Treatment (AREA)
• Environmental & Geological Engineering (AREA)
• Life Sciences & Earth Sciences (AREA)
• Hydrology & Water Resources (AREA)
• Engineering & Computer Science (AREA)
• General Chemical & Material Sciences (AREA)
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• Chemical Kinetics & Catalysis (AREA)
• Health & Medical Sciences (AREA)
• Medicinal Chemistry (AREA)
• Water Treatment By Electricity Or Magnetism (AREA)
• Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
• Battery Electrode And Active Subsutance (AREA)

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• 2011
  • 2011-01-07 AU AU2011204324A patent/AU2011204324A1/en not_active Abandoned
  • 2011-01-07 WO PCT/US2011/020478 patent/WO2011085171A2/en active Application Filing
  • 2011-01-07 EP EP11703295A patent/EP2521697A2/de not_active Withdrawn
  • 2011-01-07 US US12/986,248 patent/US20120012466A1/en not_active Abandoned

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