WO1995021795A1 - Generateur electrocatalytique d'oxygene dissous pour le traitement de l'eau - Google Patents

Generateur electrocatalytique d'oxygene dissous pour le traitement de l'eau Download PDF

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Publication number
WO1995021795A1
WO1995021795A1 PCT/US1995/001730 US9501730W WO9521795A1 WO 1995021795 A1 WO1995021795 A1 WO 1995021795A1 US 9501730 W US9501730 W US 9501730W WO 9521795 A1 WO9521795 A1 WO 9521795A1
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Prior art keywords
electrode
water
plates
enclosure
dissolved oxygen
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Application number
PCT/US1995/001730
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English (en)
Inventor
Bruce Davies
Original Assignee
Bruce Davies
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 Bruce Davies filed Critical Bruce Davies
Priority to AU18744/95A priority Critical patent/AU1874495A/en
Priority to EP95910972A priority patent/EP0743924A4/fr
Publication of WO1995021795A1 publication Critical patent/WO1995021795A1/fr

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    • 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
    • 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
    • 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
    • C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
    • 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
    • C02F1/463—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrocoagulation
    • 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
    • C02F1/72—Treatment of water, waste water, or sewage by oxidation
    • C02F1/727—Treatment of water, waste water, or sewage by oxidation using pure oxygen or oxygen rich gas
    • 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
    • C02F2001/46128—Bipolar electrodes
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
    • C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
    • C02F1/46104—Devices therefor; Their operating or servicing
    • C02F1/46109—Electrodes
    • C02F2001/46133—Electrodes characterised by the material
    • C02F2001/46138—Electrodes comprising a substrate and a coating
    • C02F2001/46142—Catalytic coating
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
    • C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
    • C02F1/46104—Devices therefor; Their operating or servicing
    • C02F1/46109—Electrodes
    • C02F2001/46152—Electrodes characterised by the shape or form
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00—Nature of the contaminant
    • C02F2101/30—Organic compounds
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00—Nature of the contaminant
    • C02F2101/30—Organic compounds
    • C02F2101/32—Hydrocarbons, e.g. oil
    • 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
    • C02F2201/003—Coaxial constructions, e.g. a cartridge located coaxially within another
    • 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
    • C02F2201/4611—Fluid flow
    • 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
    • C02F2201/4612—Controlling or monitoring
    • C02F2201/46125—Electrical variables
    • C02F2201/4613—Inversing polarity
    • 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
    • C02F2301/00—General aspects of water treatment
    • C02F2301/02—Fluid flow conditions
    • C02F2301/022—Laminar
    • 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

Definitions

  • This invention relates to apparatus and methods for electrolytically treating liquids. More particularly, this invention relates to apparatus and methods for generating dissolved oxygen within water and for electrolytically purifying and/or removing contaminants from the water.
  • a widely recognized problem within open and closed hydraulic systems is the depletion or degradation of dissolved oxygen within water. This problem is particularly significant within environments that are highly dependant upon dissolved oxygen. For example, large and small bodies o f water that support aquatic and marine life require the generation and maintenance of large amounts of dissolved oxygen. Dissolved oxygen is a necessary requirement for the survival of aquatic organisms living in lakes, rivers, and other bodies of water. Fish will die if the dissolved oxygen level drops below a given point. Persons familiar with aquatic and marine life often measure the quality and health of a body of water by the amount of dissolved oxygen present. Similarly, certain processes such as those used within paper processing plants, water purification plants, and sewage treatment plants require the generation of large amounts of dissolved oxygen.
  • electrolysis has been used to break apart the various molecules of H 2 0 or water to produce gaseous hydrogen and gaseous oxygen. It is important to note, however, the significant difference between gaseous oxygen and dissolved oxygen.
  • the present invention comprises simple, easily used, inexpensive apparatus and methods for generating high levels of dissolved oxygen within water and for electrolytically purifying and/or removing contaminants from the water in an environmentally safe fashion.
  • the invention is compact, unobtrusive, functional, efficient, reliable, reusable, durable, rugged, easily constructed, inexpensive and economical to manufacture, and is easily installed and removed if needed. Minimal installation and access room is needed. A minimum amount of manipulation is required for installation. Once installed, the invention is extremely simple to use and maintain.
  • the apparatus of the invention does not require very much space. Consequently, replacement parts also require a minimal amount of storage space.
  • the present invention significantly increases the speed, simplifies the procedure, and dramatically enhances the efficiency of elevating the oxygenation level within a body of water.
  • the present invention also overcomes all of the previously mentioned disadvantages of apparatus and processes heretofore used for the stated purpose.
  • a significant benefit of the present invention is that it can be used within a closed, hydraulic conduit or pipeline.
  • the present invention eliminates the need for bulky, expensive, complex, and maintenance intensive surface spray and mechanical aerators. No longer must a business enterprise or municipality purchase large tracks of land for aeration, settlement, and treatment ponds. The aeration or dissolved oxygen generation process no longer must be exposed to surface air which creates aromatic, zoning, and ecology related problems. Installation of the invention does not mandate an extensive capital investment that would otherwise be required.
  • the cost to maintain the invention is insignificant in comparison to the expense of building and maintaining the type of commercial aeration projects now in use.
  • the savings to commercial enterprises by using this invention also includes not having to hire, pay, and contribute fringe benefits to numerous support personnel.
  • the dangers of falling into open ponds and catching a finger, hand, limb, or clothing in operating machinery are also eliminated.
  • the present invention uses electrolysis processes to break apart water molecules and cause oxygen, created thereby, to go directly into a dissolved state. Due to the catalytic properties and action of the invention, the oxygen molecules do not pass through a gaseous state but rather are forced to assume an immediate dissolved state throughout the conversion process. The oxygen, in effect, bypasses the gaseous stage that is otherwise required by other processes.
  • the resulting dissolved oxygen levels are relatively stable due to the cell design and do not require pressurization during the process.
  • the dissolved oxygen generating abilities of the invention are relatively unaffected by the presence of minerals, chemicals or organic materials that are present within the water. In fact, the invention scrubs or removes such contaminants from the water.
  • the cell is noncontaminating and does not introduce any additional metal, mineral, or chemical components into the water.
  • the invention represents a dramatic and significant improvement over the electrolysis-type processes disclosed in the inventor's earlier granted patent (U.S. Letters Patent No. 4,917,782). There is no need to precondition the water, as is usually required in other electrolysis-type processes. There is no need that particular minerals be present in the water for operation of the processes. In addition, water passing through the apparatus is not further contaminated by the process, as commonly occurs during other electrolysis- type processes where untreated metal electrodes dissolve.
  • unprocessed water at 30 degrees centigrade that is passed through the present invention can readily obtain a dissolved oxygen concentration level of 20 parts per million.
  • Another method that has been used to generate elevated concentrations of dissolved gases is exposing the water or fluid to excessive gas pressurization.
  • carbonated water or soda generally uses pressurization to obtain higher levels of gas saturation.
  • the elevated dissolved oxygen levels obtained through the present invention are not obtained through the use of carbonation or elevated pressures.
  • the water is not carbonated.
  • the aforementioned results are accomplished with no significant additional pressurization.
  • the lack of pressurization is important to note.
  • the processes used within the present invention in effect change the gas balances of the water. In other words, the present invention rearranges the various gas percentages of oxygen, nitrogen, and contaminants within the water.
  • Henry's law assumes that the percentage of gas contained within the water will be the same as that of the surrounding atmospheric air, or in other words seventy-eight percent (78%) nitrogen and twenty-one and nine-tenths percent (21.9%) oxygen.
  • the inventor has discovered that by electrocatalytically forcing oxygen within the water into a dissolved state, the apparatus of the present invention can create an unstable or quasi-stable condition. In effect, the dissolved gases contained within the water can exceed the heretofore believed absolute saturation limit of one hundred percent (100%) .
  • the amount of gas in the solution remains at 100% to 101%, but processed repetitively, most if not all of such gas will be oxygen.
  • the apparatus is preferably placed within systems that recirculate water. Every time the water passes through the apparatus, more nitrogen is displaced and the level of dissolved oxygen increases. This process can continue until approximately twenty-two (22) parts per million of dissolved oxygen are achieved and maintained, regardless of the temperature of the water, as long as the water temperature is below fifty (50) degrees Celsius.
  • the present invention can achieve and maintain a concentration of twenty- two (22) parts per million of dissolved oxygen all day long when the water was at thirty (30) degrees Celsius.
  • a conventional use of Henry's law would generally limit the concentration amount dissolved oxygen to around six (6) or (7) parts per million.
  • the given body of water should have a dissolved oxygen concentration level of around 6 parts per million, but by using this invention the concentration level may be maintained at about 22 parts per million.
  • the injected air comprises approximately seventy- eight percent (78%) of nitrogen and twenty-two percent (22%) of oxygen.
  • the relative percentage of absorption of such gases is comparable to the respective amounts of gas injected below the water. Consequently, with the increase in dissolved oxygen, there is a significant (in excess of threefold) increase in the amount of dissolved nitrogen.
  • Many fish and other aquatic life are sensitive to high nitrogen levels and can become embolized if the nitrogen levels are excessive.
  • the level of dissolved oxygen can be effectively doubled, tripled, and even quadrupled in a single pass of water through the system without any absorption of dissolved nitrogen.
  • the results of this process far exceed that what can be achieved by using air blowing or other older techniques.
  • a different method to obtain dissolved oxygen is to first liquefy air to separate off the oxygen. The oxygen is then stored in pressurized tanks for later injection back into the water reservoir. After being injected back into the water reservoir, the oxygen is allowed to again bubble back to the surface.
  • Several problems with this method include /21795
  • the present invention Besides the significant reduction in cost, required equipment, and manual labor as compared to the previously mentioned pressurized method, the present invention generates dissolved oxygen. Unlike gaseous oxygen, dissolved oxygen is not explosive. Consequently, the present invention is much safer to use and operate.
  • the only needed component to operate the apparatus is a flow of water and a direct electrical current. It is usually much more convenient to obtain and maintain a supply of electricity than to keep replenishing a supply of pressurized oxygen tanks.
  • the inventor has discovered that by increasing the amount of dissolved oxygen in water, the oxygen molecules can actually displace and thereby remove or reduce the amount of dissolved minerals, oils, and organic matter contained in the water. Not only is healthier water created, but the cleaning process does not use additional chemical additives to do so.
  • the inventor has actually created an electronically controlled scrubbing device that scrubs contaminated water at a molecular level. More particularly, the apparatus of the present invention can be used to treat water having physical, chemical, and/or biological contaminants. Although not a cure-all for every water problem, dissolved oxygen generation with electronic purification will help or cure contamination problems in most cases. The following explanation describes how the invention affects each type of contamination.
  • the electrical flow and field generated by the invention causes a coagulation or lumping together of solids, colloids, and thin oils that comprise physical contaminants within water.
  • the electrolysis within the electrolytic or electrocatalytic cell of the invention adds large amounts of dissolved oxygen to the water that in turn cause the oxidation and destruction of many other contaminants.
  • the contaminants easily fall or settle out of the solution.
  • Such coagulation, oxidation, and removal of settled contaminants eliminate algae, hydrogen sulfide, and other elements that create most obnoxious odors.
  • the presence of hydrogen sulfide generally creates a smell of raw sewage. It is important to note that by using the electrocatalytic purification apparatus and processes described herein, such purification can be accomplished without using or adding other chemicals or agents to treat the water.
  • Chemical contaminants can also be reduced by subjecting the water to the high levels of dissolved oxygen.
  • the dissolved oxygen oxidizes and breaks down many chemicals and hydrocarbons in low concentrations.
  • Minerals and dissolved etals in the water also coagulate into filterable solids as do many soaps and phosphates.
  • Biological contamination can be safely and effectively treated using the present invention. It is important to note that dissolved oxygen is an effective, natural bactericide that is not toxic to animals, fish, or plants.
  • Anaerobic bacteria live without oxygen.
  • An example of a virulent type of anaerobic bacteria is that commonly found in stagnant water. The simple introduction of oxygen into the water generally kills anaerobic bacteria.
  • Aerobic bacteria which live with oxygen, can also be killed by introducing additional dissolved oxygen into the water. This is accomplished by raising the level of dissolved oxygen until the aerobic bacteria die. What happens is that excess oxygen breaks down the outer wall of the bacteria cell causing the death of the organism.
  • Dissolved oxygen can also be used very effectively to kill fecal coliform bacteria this is found in waters having sewage contamination. For example, many cities use oxygen to purify the water output being expelled from sewage plants.
  • the noncontaminating nature and qualities of this invention make the apparatus particularly valuable for use with fish farms, lakes, drinking water, and other environmentally sensitive water reserves.
  • the invention can similarly be used within aquatic, waste water treatment, sewage treatment, water purification, paper processing, and many other industries that require high levels of dissolved oxygen within the water. Large open bodies of water can now be economically maintained having a stable, balanced, supersaturated state of dissolved oxygen.
  • the primary purpose of the invention is not necessarily the coagulation of contaminants, although this is an extremely beneficial by-process. Instead, the primary purpose of the invention is to increase the level of dissolved oxygen within the water.
  • the present invention is a flow-through system.
  • the invention allows the water to pass right through the apparatus without having to force the water in or out of the apparatus.
  • the system is preferably not serpentine in shape or operation. If the system was serpentine within the cell itself, turbulence would be introduced and the system would not work as well. Consequently, the invention permits high water flow rates with only a minimum amount of drag or flow resistance. The rate of flow can and should be substantially constant.
  • the invention can be installed into and will not interfere with most water pumping and storage systems.
  • the present invention generally comprises a housing, a first electrode or electrical conductor, a second electrode or electrical conductor, securing means, and current means.
  • FIG. 1 is an isometric view of a preferred embodiment of the invention illustrating a specially designed electrocatalytic cell, depicted in phantom lines, within an exterior housing.
  • FIG. 2 is an enlarged, cross-sectional, side-elevational view of the invention shown in Figure 1, further illustrating placement and interconnection of the various components of the apparatus.
  • FIG. 3 is a partially exploded, isometric view of the invention illustrating the internal components of the electrocatalytic cell.
  • FIG. 4 is a transverse, cross-sectional view of th invention as seen within a plane defined by line 4-4 i Figure 2.
  • FIG. 5 is a schematic diagram showing various additional components that can be used with the apparatus to aerate, oxygenate, and treat an open aquatic or marine pond, such as a fish pond.
  • FIG. 6 is a schematic diagram of an alternative form of putting the invention into practice to aerate, oxygenate, and treat waste water from a paper mill.
  • the present invention generally comprises an apparatus 20 having a housing 22, a first electrode 24, a second electrode 26, securing means 28, and current means 30.
  • the housing 22 defines an enclosure 32 within which an electrolytic or electrocatalytic cell 34 is contained.
  • the housing 22 can have any desired cross-sectional configuration and be of any desired length.
  • the housing 22 has an elongated, tubular, generally cylindrical shape. Rectangular, triangular, square, or other cross-sectional shapes may alternatively be used.
  • the inventor believes that the minimum exterior size of the housing 22 can be as small as a one (l) inch outer diameter. The inventor believes that the maximum exterior size of the housing 22 can be as large as a six (6) feet outer diameter.
  • the housing 22 has a first end 36 and an opposed second end 38.
  • An inlet opening 40 or port is located at the first end 36.
  • An outlet opening 42 or port is located at the opposed second end 38.
  • the housing 22 can be directly connected or secured to a conduit or pipe 44 in any manner that permits the generally collinear passage of water 46 into the inlet opening 40, through the enclosure 32, and out of the housing 22 through the outlet opening 42.
  • the housing 22 may be provided with an inlet coupling 48 that is connected between the pipe 44 and a main portion 50 of the housing 22 that encloses the cell 34.
  • the inlet coupling 48 is designed to provided a gradually increasing taper from an inlet end 52 to an opposed outlet end 54.
  • the tapered design is intended to provide for a smooth flow of the water 46 through the apparatus 20.
  • the inlet end 52 has a narrower cross-sectional area or circumference as compared to the opposed outlet end 54.
  • the outlet end 54 has a larger cross-sectional area or circumference as compared to the opposed inlet end 52.
  • the narrower inlet end 52 is sized and dimensioned to be secured to an opening within the pipe 44.
  • the housing 22 could also be provided with an outlet coupling 56.
  • the outlet coupling 56 is generally similar to the design of the inlet coupling 48. More particularly, the outlet coupling 56 is connected between the pipe 44 and the main portion 50 of the housing 22 that encloses the cell 34.
  • the outlet coupling 56 has an inlet end 58 and an opposed outlet end 60.
  • the inlet end 58 of the outlet coupling 56 has a wider cross-sectional area or circumference as compared to the opposed outlet end 60.
  • the outlet end 60 of the outlet coupling 56 has a narrower cross-sectional area or circumference as compared to the opposed inlet end 58.
  • the narrower outlet end 60 is sized and dimensioned to be secured to an opening within the pipe 44.
  • the housing 22, inlet coupling 48, and outlet coupling 56 should be manufactured from a material that does not conduct electrical current.
  • the housing 22, inlet coupling 48, and outlet coupling 56 be manufactured from a PVC, Teflon, nylon, or any other nonconductive material.
  • PVC polyvinyl-co-styrene
  • Teflon polyvinyl-co-styrene
  • nylon polymethyl methacrylate
  • other materials could alternatively be used.
  • the cell 34 contains a plurality of bipolar, preferably tubular-shaped electrodes.
  • the first electrode 24 and second electrode 26 are positioned or located within the enclosure
  • the first electrode 24 may comprise any desired shape or configuration that accomplishes the desired objectives.
  • the second electrode 26 may also comprise any desired shape or configuration that accomplishes the desired objectives.
  • the second electrode 26 should also be capable of carrying an electrical charge and current.
  • the first electrode 24 is juxtaposed near to the second electrode 26. However, there is a spaced relationship between the first electrode 24 and the second electrode 26.
  • the water 46 must be capable of passing between the first electrode 24 and the second electrode 26 in a generally unimpeded manner, and an electrical charge and current must be capable of being passed through the water 46 from the first electrode 24 to the second electrode 26.
  • securing means 28 that accomplish this task are provided.
  • Such securing means 28 secure the first electrode 24 and the second electrode 26 within the main portion 50 of the housing 22 in such a manner that the spaced relationship between the first electrode 24 and second electrode 26 can be easily maintained.
  • the securing means 28 may take any desired form or design that accomplishes the required task. One particular form for the securing means 28 will be discussed in more detail further below.
  • the interior of the cell 34 preferably consists of two (2) or more coated tubular shaped catalytic electrodes 24 and 26 or curved plates.
  • the first electrode 24 comprises a plurality of elongated, coaxially-positioned, tubular plates 24'.
  • the plates 24' of the first electrode 24 should have a generally collinear orientation with respect to passage of the water 46 through the enclosure 32.
  • the second electrode 26 also comprises a plurality of elongated, coaxially-positioned, tubular plates 26'.
  • the plates 24' and 26' of the first electrode 24 and second electrode 26 also comprise elongated, generally hollow, cylindrical shapes. When placed within the housing 22, the plates 24' and 26' should have successively larger diameters -21-
  • plates 24* an 26' can alternatively be used, if desired.
  • the inventor prefers to use plates 24' and 26' that have successively larger but similar cross- sectional design as that of the pipe 44.
  • the preferre configuration of the plates 24' and 26' is that of a hollow, cylindrical tube, pipe, or bent plate.
  • the plates 26' of the second electrode 26 are interposed between respective, proximate plates 24' of the first electrode 24.
  • the present invention functions in a very different manner, the design is similar to that of a multi-plated capacitor using successively larger or smaller spaced tubes placed within one another.
  • the spaced interposition of the plates 24' and 26' is important so that a closed electrical circuit can be created only when water 46 is passed between the plates 24' and 26'. Furthermore, with one exception that will be discussed further below, it is desirable that the amount of surface area facing the respective interposed plates 24' and 26' be maximized to better facilitate passage of current therefrom and affect a greater amount of water 46 passing therebetween.
  • Such interposition may be accomplished by using securing means 28 that spaces the plates 26' of the second electrode 26 in an interposed relationship between the plates 24• of the first electrode 24.
  • securing means 28 that spaces the plates 26' of the second electrode 26 in an interposed relationship between the plates 24• of the first electrode 24.
  • the inventor prefers to use generally "Y"-shaped plate or electrode spacers, end 1795
  • braces, or guides 28' to quickly and easily hold and spac the plates 24' and 26' relative to one another.
  • the spacers or guides 28' are adhered or otherwise secured to the plates 24' and 26'. A friction fit between the spacers or guides 28' and the plates 24' and 26' may be sufficient.
  • the spacers or guides 28' may be provided with notches 62, channels, or indentations therein that are designed to receive and retain the variously sized plates 24' and/or 26'.
  • the outermost edges 64 of the nonelectrically conductive spacers or guides 28• may be braced or otherwise secured to the interior sidewalls 66 of the housing 22.
  • the securing means 28 may further comprise means for preventing the passage of the water 46 through the enclosure 32 except between the first electrode 24 and the second electrode 26.
  • a spacing or spacer ring 68 may be placed between the plates 24' and 26' and the interior sidewalls 66 of the main portion 50 of the housing 22.
  • the housing 22, the first electrode 24, the second electrode 26, the securing means 28, and the current means 30 are all configured and dimensioned to reduce turbulence within the water 46 passing through the enclosure 32, thereby allowing the water 46 to maintain a maximum laminar flow.
  • the inventor prefers to use a housing 22 that has the same general cross-sectional configuration as the pipe 44.
  • the remaining cross- sectional area available for passage of the water 46 through the enclosure 32 should comprise approximately the same area, or generally comparable cross-sectional area, as that of the interior area of the pipe 44.
  • the inventor desires to eliminate adverse venturi affects within the apparatus 20 and system. If a venturi affect occurs, there will be a lowering of water pressure. If there is a pressure drop, gases will come out of the solution which is undesirable.
  • the cross-sectional area of the apparatus 20 is enlarged, as compared to the input pipe 44. Such enlargement accounts for the added cross-sectional dimensions of the internal components within the apparatus 20.
  • the rate of flow of the water 46 through the system should not dramatically increase or decrease.
  • the inventor prefers to use plates 24' within the first electrode 24 and plates 26' within the second electrode 26 that have a respective leading edge 24" and 26" that is tapered to a relatively sharp edge.
  • the trailing edge 24"' of the plate 24' should be tapered to a relatively sharp edge.
  • the trailing edge 26"' of the plate 26' should also be tapered to a relatively sharp edge. Tapering of the leading and trailing edges further reduce turbulence within the water 46.
  • the invention also contemplates the use of current means 30 for supplying a direct electrical current to the first electrode 24, through the water 46, and into the second electrode 26 to form a closed electrical circuit or loop. In effect, the current means 30, the first electrode 24, the water 46, and the second electrode 26 define the electrolytic or electrocatalytic cell 34.
  • the current means 30 comprises an electrical power supply 80 or source that is positioned externally from the housing 22 or cell 34.
  • a power supply 80 similar that described in U.S. Letters Patent No. 4,917,782 may be used with the present invention.
  • the first and second electrodes 24 and 26 are connected to the power supply 80 and are thereby electrically active in the water 46 solution.
  • each electrode 24 and 26 are set in electrically insulated material that insures proper spacing and minimum current leakage between the electrodes 24 and 26.
  • a very low voltage is used.
  • the power supply 80 delivers about one (1) volt to sixty (60) volts of direct current to the plate 24' and 26' defining the cell 34. The actual amount of voltage will depend upon the conductivity, temperature, and elevation of the water 46.
  • the cell 34 operates on about 0.5 amperes to 600 amperes depending upon the size and length of the first and second electrodes 24 and 26 (respectively comprising plates 24' and 26'), and depending upon the characteristics of the water 46 such as its conductivity.
  • the system uses an isolated direct current (DC) voltage system within the cell 34. Since the fish are not allowed to go through the cell 34, the fish are not adversely effected. The passage of the fish can be blocked by an input screen (not shown) . Even if the input screen was removed, the fish would not be able to pass through the filters and related equipment used with the cell 34. There is no voltage leakage outside of the cell 34 back to the pond at all.
  • the transformer is isolated from the alternating current (AC) line and only director current (DC) is exposed to the water 46. Consequently, the only electrical flow occurs within the cell 34 itself.
  • the present invention Since water is not as electrically conductive when cold, the present invention functions even better when the water is warmer or heated. At higher temperatures, the apparatus 20 works extremely well.
  • the first electrode 24 and the second electrode 26 are bipolar. Consequently, an electrical timer 82, similar to that described in U.S. Letters Patent No. 4,917,782, can be used to periodically reverse the polarity within the cell 34. By reversing the polarity within the cell 34, debris adhering to the plates 24' and 26' can be urged to fall off.
  • the time periods for electrical current reversals vary depending upon the type and amount or level of water contamination and the debris buildup.
  • the inventor prefers a minimum reversal time period of about ten (10) minutes.
  • a maximum reversal time period should be about eight (8) hours. Due to this electrically self-cleaning feature, no mechanical cleaning of the cell 34 is generally required.
  • the oxygen generation process described herein uses non- consumable catalytic type electrodes 24 and 26 and/or plates 24* and 26*.
  • the spacing of the first and second electrodes 24 and 26 and shape of the cell 34 are designed to maximize or optimize dissolved oxygen production.
  • the applied voltage and current levels are also designed to maximize production of dissolved oxygen.
  • the spacing between respective plates 24' and 26' varies from about 0.1 inch to 1.0 inch depending on the type of water contamination that is being treated.
  • the desired flow rates, pipe size, and type of contamination being treated will primarily dictate the number of electrode plates 24 ' and 26' that must be used.
  • Power is supplied to the electrode plates 24' and 26' positioned within the enclosure 32 by means of one or more cables, wires, and/or straps 84 and 86 that are welded or otherwise electrically connected or secured to plates 24' and 26', respectively.
  • an electrically conductive strap 84 is provided for the set of plates 24' that comprise first electrode 24.
  • an electrically conductive strap 86 is provided for the set of plates 26' that comprise second electrode 26.
  • the strap 84 is connected in a parallel fashion to each plate 24' within the first set of electrodes 24.
  • the strap 86 is connected in a parallel fashion to each plate 26' within the second set of electrodes 26.
  • the opposed terminal ends 84' and 86' of the straps 84 and 86 are past through the sidewall 66 of the housing 22, whereupon the terminal ends 84' and 86' are connected to the external power supply 80 by any convenient manner.
  • an electrical current can be past through the cell 34 once water 46 fills the gap between the respective plates 24' and 26*.
  • the electrically conductive straps 84 and 86 are welded to each electrode plate 24' or 26' within that particular set of electrodes 24 or 26, respectively. If the straps 84 and 86 have any significant width thereto, a slot 88, channel, or notch may be cut into each electrode plate 24* or 26' to accommodate the placement of the straps 84 or 86 therein. As a result, the straps 84 and 86 may be mounted or placed edgewise within the flow path of the water 46 and thereby minimize its affect on turbulence within the water 46.
  • a centermost portion of the cell 34 comprises a solid, thin, cylindrical water block 90.
  • Water block 90 may or may not be tapered to a point.
  • the water block 90 is designed to further prevent water 46 from passing through the enclosure 32 without first passing between two oppositely charged electrode plates 24' and 26' and thereby being electrocatalytically treated.
  • spacing or spacer ring 68 that is placed between the plates 24' and/or 26' and the interior sidewalls 66 of the main portion 50 of the housing 22. That spacing or spacer ring 68 also prevents the passage of the water 46 through the enclosure 32 except between the first set of plates 24• that define the first electrode 24 and the second set of plates 26' that define the second electrode 26. Thus positioned, water 46 cannot bypass the cell 34 unless a different bypass pipe (not shown) is used.
  • the centermost cylindrical water block 90, the outermost spacing or spacer ring 68, the plate or electrode spacers or guides 28', the inlet coupling 48, the outlet coupling 56, and the interior sidewalls 66 of the housing 22 are all preferably manufactured from an electrically nonconductive material such as, but not limited to, PVC, Teflon, or nylon.
  • an electrically nonconductive material such as, but not limited to, PVC, Teflon, or nylon.
  • both the straps 84 and 86 and both sets of plates 24' and 26' or electrodes 24 and 26 are preferably manufactured from titanium. Of course, other metals may also be used, but the inventor prefers to use titanium.
  • either or both of the sets of plates 24' and/or 26' are coated with iridium oxide, ruthenium oxide, rhodium oxide, palladium oxide, osmium oxide, platinum oxide, or any other coating material that enhances the capability of the cell 34 to perform its function.
  • iridium oxide ruthenium oxide, rhodium oxide, palladium oxide, osmium oxide, platinum oxide, or any other coating material that enhances the capability of the cell 34 to perform its function.
  • the leading edge 24" of each plate 24' within the first electrode 24 is set forward of or set backward of each proximate leading edge 26" of each plate 26' within the second electrode 26.
  • the aforementioned spacing along the longitudinal axis 92 of the cell 34, as determined by the passage of water 46 through the enclosure 32, should be about one to one and one-half inches (1" to 1-1/2") between the leading edges 24" of the plates 24' of the first electrode 24 and the leading edges 26" of the plates 26' of the second electrode 26.
  • the leading edges 24" of the plates 24• forming the first electrode 24 should not be aligned with each proximately positioned leading edge 26" of the plates 26' forming the second electrode 26. This misalignment is intended to make sure that the plates 26' are not within the electrical flow that supplies power to plates 24'. Similarly, the plates 24' should not be within the electrical flow that supplies power to plates 26'.
  • leading edges 24" and 26" and the trailing edges 24"' and 26"* of plates 24' and 26" should not be actively involved within the electrolysis process or excessive wear may occur.
  • the present invention may be practiced without the use of a mechanical filter. In effect the invention can be practiced without the use of consumable chemicals, filters, or other related equipment. No chemicals are used in this process other than for ph adjustment.
  • one or more filters 94 may be operatively connected to the housing 22 or be placed upstream and/or downstream from the apparatus 20 within the pipe 44.
  • the filter 94 may remove contaminants from the water 46 before the water 46 passes through the enclosure 32.
  • Figure 5 illustrates the filter 94 installed upstream of the apparatus 20.
  • the filter 94 may take any desired form. However, the filter 94 should not significantly retard the flow of water 46 through the apparatus 20.
  • the water 46 may be gravity fed through the pipe 44 and through the apparatus 20.
  • the inventor uses a flood sensor (not shown) that governs the input of waste water 46' through the input pipe 44.
  • one or more pumps 96 may be used to increase the pressure of the water 46 and thereby urge the water 46 to pass through the enclosure 32.
  • the pump or pumps 96 can be operatively connected to the apparatus 20 or to the pipe 44, or actually be integrally formed within the housing 22 of the apparatus 20.
  • the invention is intended for use with water circulation apparatus to clean and purify the water 46 and remove the minerals therefrom.
  • the water 46 Prior to passing through the apparatus 20 and/or after having passed through the apparatus 20, the water 46 may be deposited into a holding pond 98, holding tank 100, or the like.
  • Figure 5 schematically illustrates the use of the holding pond 98, such as an open aquarium, fish pond, waste water treatment pond, aquarium, hot tub, or swimming pool.
  • Figure 6 schematically illustrates the use of the apparatus 20 with one or more enclosed holding tanks 100.
  • the holding tank 100 is operatively connected to an input pipe 102.
  • the holding tank 100 is capable of holding or detaining the water 46 after the water 46 has past through the enclosure 32, thereby permitting contaminants within the water 46 to settle to a bottom 104 of the holding tank.
  • contaminated water 46 is initially pumped into the holding tank 100 through input pipe 102 where the water 46 is stored.
  • Each holding tank 100 is provided with an inlet port 106 and an outlet port 108.
  • the inlet port 106 is positioned near a lower portion 110 of the holding tank 100 to receive unprocessed water 46' therethrough.
  • the outlet port 108 is positioned near an upper portion 112 of the holding tank 100 to permit removal of processed water 46" therethrough.
  • Some of the contaminants may be mechanically removed from the unprocessed water 46' by means of one or more filters 94 that are placed within the input pipe 102.
  • the unprocessed water 46' is drawn from near the bottom 104 or middle portion 114 of the holding tank 100 and is pumped into the cell 34 where the water 46 is electrocatalytically scrubbed. After exiting the cell 34, the processed water 46" is pumped back into the holding tank 100 whereupon the coagulated contaminants can settle to the bottom 104 of the holding tank 100.
  • the cell 34 is specially designed to maximize the production of dissolved oxygen in water 46 flowing through it.
  • the shape of the parts of the apparatus 20 are designed to reduce turbulence and to maintain a high level of dissolved oxygen within the water 46.
  • the selection of voltage and current levels are also set to maximize dissolved oxygen generation.
  • the water 46 is further purified.
  • nitrogen gas is being expelled from the processed water 46" and is being immediately replaced with dissolved oxygen that is created during the electrocatalytic process.
  • the holding tank 100 preferably has a vent 116 located near its uppermost portion 118. Gaseous nitrogen, oxygen and/or other undesired gases that are expelled from the cell 34 will float to the upper surface 120 of the holding tank 100, whereupon such gases can be vented, released, or expelled to another holding tank 101' for further processing or be vented to the outside atmosphere. The venting of such gases eliminates the possibility that such gases will be reab ⁇ orbed back into the processed water 46". As a consequence of using the disclosed apparatus 20 and processes, processed, purified water 46" will naturally migrate to the upper portion 112 of the holding tank 100. In effect, a stratification of the water 46 occurs. As the water 46 becomes more gasified or has less contaminants therein, such processed water 46" rises upward.
  • Unprocessed water 46' containing contaminants that are clumped together fall to the bottom. Consequently, natural stratification occurs. Eventually the processed water 46" floats to the top of the holding tank 100 and unprocessed or less processed water 46' falls to a lower level for reprocessing.
  • the apparatus 20, and particularly the holding tank 100 may also be provided with means for removing settled contaminants from the bottom 104 of the holding tank 100. Any appropriate means to accomplish this task may be used.
  • the processed water 46" that remains near the upper surface 120 of the holding tank 100 can be drawn off by gravity or be pumped off into another holding tank 100', whereupon the process is again repeated.
  • the present invention can be used without a holding tank 100 (as shown in Figure 5), with a single holding tank 100, or with a plurality of holding tanks 100, 100' and 100".
  • the processed water 46" will become progressively purified of contaminants, will have significant amounts of dissolved nitrogen displaced therefrom, and will eventually have extremely high volumes of dissolved oxygen contained therein.
  • a cell 34 is not installed within the third or last illustrated holding tank 100".
  • the levels of dissolved oxygen contained within the water 46 are very high. Consequently, the advantageous effects imparted by high levels of dissolved oxygen will continue even after the production of dissolved oxygen ceases.
  • the inventor refers to this as a residual kill process where contaminants are continuing to be purged from the water reservoir within holding tank 100".
  • Chlorine may be placed within the water 46 and residual kill will occur for a substantial period of time. However, chlorine stays in the solution. Dissolved oxygen functions in a similar manner as chlorine but dissolved oxygen is eventually released into the atmosphere and the water solution is allowed to equalize. Thus, the present invention is much more ecologically friendly to the environment than using chlorine.
  • the present invention contemplates not only the apparatus 20 disclosed and claimed herein, in all of its forms and alternative embodiments, but also contemplates the described methods and processes for increasing the amount of dis ⁇ olved oxygen within water 46 and breaking down th molecular structure of water borne organisms.
  • the process passes low direct current (DC) voltage, using a catalytic-type cell 34, through water 46.
  • the catalytic action of the cell 34 forces most of the oxygen that is broken apart from water molecules to go directly into a dissolved oxygen state.
  • dissolved oxygen levels that can be created by these processes can increase a dissolved oxygen saturation point from around three parts per million (3.0 ppm) to about twenty parts per million (20.0 ppm), depending on the starting conditions of the water 46. Under some circumstances, certain dissolved minerals react with the oxygen slowing down the oxygen generation process.
  • Such processes or methods may include the following steps:
  • the first electrode 24 and second electrode 26 each are capable of carrying an electrical charge and current.
  • the first electrode 24 is juxtaposed near the second electrode 26 in a spaced relationship to the second electrode 26.
  • the direct electrical current should be sufficient, when passed through the water 46, to break apart water molecules.
  • the direct electrical current should also be sufficient to break down the molecular structure of water borne organisms and/or chemicals by means of electrolysis and by oxidization created from the breaking apart of the water molecules.
  • a small pond having a temperature of 30 degrees Celsius and a medium fish loading would typically have a dissolved oxygen saturation point of 7.6 parts-per-million (ppm). If the fish loading or containment is higher, the dissolved oxygen saturation point would be slightly less than 7.6 ppm.
  • a typical rate of power usage would be approximately 5.0 kilowatts per hour.
  • the very same pond can be easily maintained with a dissolved oxygen saturation point of 14.0 to 16.0 ppm.
  • the apparatus only needs to use eight (8) electrode plates and have a diameter of three (3) inches.
  • the power requirement would be twenty-four (24) volts of direct current at thirty-seven (37) amperes.
  • the flow rate of the treated water would be seventy (70) gallons per minute.
  • the entire treatment system would consist of only the power supply, the cell, a filter, and a pump for water movement.
  • the present invention may be utilized wherever simple, reliable, easily used apparatus and methods are needed to increase the level of dissolved oxygen within a body of water. For example various aquatic, waste water treatment, sewage treatment, water purification, paper processing, and many other plants and industries require high levels of dissolved oxygen within the water.
  • the apparatus of this invention is compact, functional, unobtrusive, efficient, reusable, durable, rugged, is easily constructed, and is inexpensive and economical to manufacture.
  • the present invention has a special benefit of allowing its use with a wide variety of differently sized water conduits or pipelines.
  • the apparatus may be easily manufactured with the appropriate length, width, and/or diameter to fit the needs of a particularly required application.
  • the present invention may be secured to the conduit or pipeline in areas of extremely limited access. This feature makes the apparatus particularly unobtrusive and useful in 21795
  • Preexisting conduits or pipelines may be utilized. Other than to install the apparatus, there is no need to modify, alter, or deface the preexisting machinery. Alternatively, the invention may be incorporated into or formed integrally within new hydraulic systems.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Organic Chemistry (AREA)
  • Water Treatment By Electricity Or Magnetism (AREA)

Abstract

L'invention concerne un appareil (20), comportant un boîtier (22), une première électrode (24), une seconde électrode (26) un élément de fixation (28) et un élément d'alimentation électrique (30). Elle concerne également des procédés de traitement des liquides par production électrolytique d'oxygène dissous dans l'eau et par purification électrolytique de l'eau et/ou par extraction électrolytique des contaminants de l'eau.
PCT/US1995/001730 1994-02-10 1995-02-08 Generateur electrocatalytique d'oxygene dissous pour le traitement de l'eau WO1995021795A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AU18744/95A AU1874495A (en) 1994-02-10 1995-02-08 Electrocatalytic dissolved oxygen generator for water processing
EP95910972A EP0743924A4 (fr) 1994-02-10 1995-02-08 Generateur electrocatalytique d'oxygene dissous pour le traitement de l'eau

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US19512194A 1994-02-10 1994-02-10
US08/195,121 1994-02-10

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WO1995021795A1 true WO1995021795A1 (fr) 1995-08-17

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US5728287A (en) * 1996-10-31 1998-03-17 H2 O Technologies, Ltd. Method and apparatus for generating oxygenated water
WO1998018723A1 (fr) * 1996-10-31 1998-05-07 H¿2?O Technologies, Ltd. Procede et appareil ameliores pour augmenter la teneur en oxygene de l'eau
WO1998046532A1 (fr) * 1997-04-11 1998-10-22 H2O Technologies, Ltd. Boitier et procede permettant d'augmenter le temps de sejour pour la dissolution dans de l'eau, d'oxygene genere
WO2001044125A1 (fr) * 1999-12-17 2001-06-21 H2O Technologies, Ltd. Procede et systeme de decontamination, tel que systeme de decontamination d'eaux souterraines in situ, avec production d'oxygene dissous et d'initiateurs reactifs
US6296756B1 (en) 1999-09-09 2001-10-02 H20 Technologies, Ltd. Hand portable water purification system
DE19951461A1 (de) * 1999-10-26 2001-11-15 Wolfgang Strele Vorrichtung und Verfahren zum Entkeimen Wasser führender Anlagen
WO2002011914A2 (fr) * 2000-08-08 2002-02-14 H2O Technologies, Ltd. Procede et systeme de decontamination notamment d'eaux souterraines polluees, produisant de l'oxygene dissous et des amorceurs de reactions
US6358395B1 (en) 2000-08-11 2002-03-19 H20 Technologies Ltd. Under the counter water treatment system
US6758959B2 (en) * 2002-02-12 2004-07-06 Jerry Kellgren Method and apparatus for oxygenating ground water
FR2851560A1 (fr) * 2003-02-24 2004-08-27 Europ De Traitement Des Eaux S Procede et dispositif de desinfection electrochimique des eaux
US6908541B2 (en) * 2001-10-24 2005-06-21 Maxim Technologies, Inc. Electrolytic catalytic oxidation system
FR2909370A1 (fr) * 2006-12-01 2008-06-06 Faf Soc Par Actions Simplifiee Cellule de desinfection electrochimique des eaux
WO2010046507A1 (fr) * 2008-10-23 2010-04-29 Frias Garrido, Victoria Caridad Équipement pour le traitement de l'eau par activation électrochimique faisant appel à la technique de l'électrolyse de l'eau
US8017087B1 (en) 2008-09-18 2011-09-13 Oxygreen Corporation Device for oxygenating ground water
US8157972B2 (en) 2008-01-31 2012-04-17 Oxygenator Water Technologies, Inc. Apparatus and method for improved electrolytic water treatment process
WO2014151678A1 (fr) * 2013-03-15 2014-09-25 Tennant Company Cellule électrolytique comportant un orifice de sortie de conduit de transition
CN106422992A (zh) * 2016-08-22 2017-02-22 江苏金点环保科技有限公司 一种新型的光电联合催化装置
WO2018191662A1 (fr) 2017-04-14 2018-10-18 Evoqua Water Technologies Llc Nouvelles caractéristiques d'écoulement pour des cellules électrochimiques tubulaires concentriques auto-nettoyantes
USRE47092E1 (en) 2002-02-22 2018-10-23 Oxygenator Water Technologies, Inc. Flow-through oxygenator
USRE47665E1 (en) 2002-02-22 2019-10-29 Oxygenator Water Technologies, Inc. Flow-through oxygenator
CN111439812A (zh) * 2020-06-17 2020-07-24 山东龙安泰环保科技有限公司 一种具有电极间距调控功能的电化学水处理装置
US11260338B2 (en) 2018-08-09 2022-03-01 O2 Air-Sea, Llc Oxygen generation device
WO2022066318A1 (fr) * 2020-09-28 2022-03-31 Lewis Tom Iii Systèmes et procédés pour produire de l'eau saturée en oxygène

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DE19634208C2 (de) * 1996-08-25 1998-10-29 Genova Deutschland Gmbh & Co K Verfahren zur Aufbereitung von kommunalen Abwässern
DE19634208A1 (de) * 1996-08-25 1998-03-05 Genova Deutschland Gmbh & Co K Verfahren zur Aufbereitung von kommunalen Abwässern
US6171469B1 (en) * 1996-10-31 2001-01-09 H2O Technologies, Ltd. Method and apparatus for increasing the oxygen content of water
WO1998018723A1 (fr) * 1996-10-31 1998-05-07 H¿2?O Technologies, Ltd. Procede et appareil ameliores pour augmenter la teneur en oxygene de l'eau
WO1998018724A1 (fr) * 1996-10-31 1998-05-07 H¿2?O Technologies, Ltd. Procede et appareil pour la production d'eau oxygenee
US6478949B1 (en) 1996-10-31 2002-11-12 H2O Technologies, Ltd. Method and apparatus for increasing the oxygen content of water
US5728287A (en) * 1996-10-31 1998-03-17 H2 O Technologies, Ltd. Method and apparatus for generating oxygenated water
WO1998046532A1 (fr) * 1997-04-11 1998-10-22 H2O Technologies, Ltd. Boitier et procede permettant d'augmenter le temps de sejour pour la dissolution dans de l'eau, d'oxygene genere
US5911870A (en) * 1997-04-11 1999-06-15 H20 Technologies, Ltd. Housing and method that provide extended resident time for dissolving generated oxygen into water
AU721343B2 (en) * 1997-04-11 2000-06-29 H2O Technologies, Ltd. Housing and method that provide extended resident time for dissolving generated oxygen into water
US6110353A (en) * 1997-04-11 2000-08-29 H20 Technologies, Ltd. Housing and method that provide extended resident time for dissolving generated oxygen into water
CN1125784C (zh) * 1997-04-11 2003-10-29 水技术有限公司 为将所产生的氧气溶解到水中而提供延长的停留时间的设备和方法
US6296756B1 (en) 1999-09-09 2001-10-02 H20 Technologies, Ltd. Hand portable water purification system
DE19951461A1 (de) * 1999-10-26 2001-11-15 Wolfgang Strele Vorrichtung und Verfahren zum Entkeimen Wasser führender Anlagen
WO2001044125A1 (fr) * 1999-12-17 2001-06-21 H2O Technologies, Ltd. Procede et systeme de decontamination, tel que systeme de decontamination d'eaux souterraines in situ, avec production d'oxygene dissous et d'initiateurs reactifs
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AU1874495A (en) 1995-08-29
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EP0743924A4 (fr) 1997-03-26

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