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WO1991013029A1 - Systeme d'epuration d'eau - Google Patents

Systeme d'epuration d'eau Download PDF

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Publication number
WO1991013029A1
WO1991013029A1 PCT/AU1991/000067 AU9100067W WO9113029A1 WO 1991013029 A1 WO1991013029 A1 WO 1991013029A1 AU 9100067 W AU9100067 W AU 9100067W WO 9113029 A1 WO9113029 A1 WO 9113029A1
Authority
WO
WIPO (PCT)
Prior art keywords
electrode
bank
plates
plate
tank
Prior art date
Application number
PCT/AU1991/000067
Other languages
English (en)
Inventor
Wilfred Anthony Murrell
Original Assignee
Wilfred Anthony Murrell
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
Priority claimed from AU50585/90A external-priority patent/AU629305B2/en
Application filed by Wilfred Anthony Murrell filed Critical Wilfred Anthony Murrell
Publication of WO1991013029A1 publication Critical patent/WO1991013029A1/fr

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
    • C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
    • C02F1/465—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electroflotation
    • 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
    • C02F1/46104—Devices therefor; Their operating or servicing
    • C02F1/46109—Electrodes
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • 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
    • 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
    • C02F2201/00—Apparatus for treatment of water, waste water or sewage
    • C02F2201/46—Apparatus for electrochemical processes
    • C02F2201/461—Electrolysis apparatus
    • C02F2201/46105—Details relating to the electrolytic devices
    • C02F2201/4616—Power supply
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W10/00—Technologies for wastewater treatment
    • Y02W10/30—Wastewater or sewage treatment systems using renewable energies
    • Y02W10/37—Wastewater or sewage treatment systems using renewable energies using solar energy

Definitions

  • This invention relates to the treatment of contaminated water for domestic and other uses.
  • this chemical method can be both expensive and hazardous to one's health, whilst requiring frequent maintenance of apparatus and sludge disposal.
  • the present invention may be said to provide an apparatus and method of treating water for the separation and removal of contaminants, said method comprising the steps of: introduc i ng a quantity of untreated water into a container; passing DC or rectified AC electricity through the water by way of vertically arranged aluminium electrodes so as to treat the water causing at least some of the contaminants to rise; removing at least part of the water contaminants from the surface of the water; and removing at least part of the treated water.
  • the apparatus comprises top and bottom electrodes as well as full length electrodes between each vertically adjacent top and bottom pair.
  • the intermediate electrodes may be active or passive.
  • This invention in its preferred form does not need the addition of chemicals or the use of filtration to provide crystal clear clean water.
  • the present invention in its preferred form is more efficient and economical than other known methods.
  • the current is set at a sufficient amperage to cause the treatment to be effective in from one to three hours.
  • the electrodes are produced from alum i nium.
  • the invention in another broad form, can also be said to provide a water treatment apparatus comprising: a tank; and a plurality of vertically arranged electrode pairs within said tank. Full length electrodes are provided between each pair.
  • the apparatus includes means for removing contaminated matter floated to the surface during treatment of the water within the tank.
  • the voltage and current are adjustable so that the current may be set at sufficient amperage to carry out the treatment of the water in approximately one to three hours.
  • the means for removing contaminated matter floated to the surface of the water in the tank can be, in one preferred form, a weir-like lip at one upper extent of the tank, or two similar weir-like lips at opposite ends, being slightly below the remaining perimeter of the upper sides of the tank, or the tank can be set up with one end slightly lower than the other.
  • the floating contaminated matter can be swept from the surface of the water, over either a lip, or lower end into a receptacle for disposal.
  • one means, in another preferred form, can be a scoop or
  • Fig. 1 is a schematic representation 01 a cross sectional view of an embodiment of the invention in which all of the electrodes are connected to a power supply;
  • Fig. 2 is another schematic representation, but of simpler embodiment, wherein the tank is of metal construction and acts as one of the electrodes;
  • Fig. 3 is a schematic representation of a longitudinal sectional view of an embodiment of the invention and illustrating the collection of the contaminants removed from the water being treated.
  • Fig. 4 is a perspective view of an assembled water treatment tank showing nine electrodes.
  • Figs. 5a-5h depict schematically an arrangement of electrodes and possible connection variations attainable utilizing the teachings of the present invention.
  • Fig. 6 depicts a schematic of a five element electrode according to the present invention.
  • Figs. 7a-7h depict schematically another embodiment of the present invention.
  • Fig. 8 depicts a portion of the electrode of Fig. 7a.
  • Fig. 9 depicts, in perspective view, a water purifier according to the teachings of the present invention.
  • Fig. 10 depicts, in cross section, the attachment of electrode plates to one another as taught by the present invention.
  • Impure water is a conductor of electricity.
  • water is purified by a process of passing an electrical direct current or rectified alternating current through the water, polarizing some impurities and at the same time producing extremely small gas bubbles.
  • the small gas bubbles generated in this process quickly disperse throughout the water in the tank and act in a manner similar to positively charged particles, attracting the negatively charged contaminant particles, causing them to clump or group together, forming a floe. Although much contamination is heavier than water, in this process, most of the formation will readily float to the surface because of the gas content, with only a small proportion of the floe remaining in suspension after the electric current is removed, when it will either slowly float to the surface or
  • Fig. 1 shows a water treatment apparatus 30 comprising a tank 1 in which are assembled a number of electrodes 2.
  • the electrodes 2 are adapted to be alternatively positive and negative and are provided with respective interconnections 3 for connection to a suitable power supply (not shown).
  • the electrodes 2 are positioned within the tank 1 and insulated from the tank and from one another, using insulating supports 4.
  • Fig. 2 shows a simpler embodiment in which the tank 1 forms one of the electrodes and a second electrode 2 is positioned in the centre of the tank 1 and insulated therefrom.
  • the tank may be square or rectangular or may be an upright cylinder with the electrode 2 being a pipe or similar linear electrode.
  • the tank 1 is supplied with a water inlet 5, clean water outlet 6, deposit outlet 8, a weir 7 and a spouting 15.
  • the tank 1 may be tilted very slightly so that the lowest point is at the deposit outlet 8.
  • the locations of the various inlets and outlets 5 to 8 may be selected according to convenience, provided the outlet 6 is approximately 10 cm above the bottom of the tank and the outlet 8 is in the bottom of the tank and the inlet 5 is placed low as practicable in either end or either side of the tank.
  • the purpose of placing the outlet 8 at the lowest point is for ease of drainage and occasional flushing of the tank 1 when necessary.
  • the purpose of placing inlet 5 as low as practicable, but in an end or side of the tank 1, is so that the incoming water will disturb and mix with any remaining sediment from the last previous treatment.
  • the purpose of placing the outlet 6 at approximately 10 cm above the bottom of the tank is so that processed clean water can be removed from the tank 1 without disturbing any remaining sedimentary deposits on the bottom.
  • the weir 7 has a function which will be elaborated on hereinbelow but is essentially a low point around the upper perimeter of the tank 1 facilitating the removal of floating debris from the tank 1.
  • the spout 15 is for directing the removed material into a receptacle (not shown) for disposal.
  • Fig. 4 it can be seen that there are nine electrodes 2 in all.
  • the electrodes 2 are suspended on an insulated rod 20 which is attached to the tank 1 by either a removable or fixed fitting.
  • the electrode assembly can be arranged externally of the tank 1 and placed within the tank 1 in an insulated manner.
  • the nine electrodes 2 may be connected with alternate negative and positive polarities.
  • the nine electrodes 2 may be connected with alternate negative and positive polarities.
  • the nine electrodes 2 may be connected with alternate negative and positive polarities.
  • SUBSTITUTE SHEET electrodes 2 are connected so that the outer electrode plate 40 is connected to one polarity and the other outer electrode plate 48 is connected to the other polarity, with the remaining plates insulated and not connected to either polarity.
  • the intermediate insulated plates will each take up a voltage proportionate between the potential difference of the two outer plates and therefore all plates become activated. This method allows for the use of higher voltages and lower currents for a given amount of work, having a considerable advantage in larger installations.
  • the number, size and spacing of electrode plates may be varied in order to obtain the most convenient or most efficient operational conditions.
  • water to be treated enters through the valve 5 and the tank 1 is filled to the maximum level 13.
  • the electrodes are then connected or switched on to a DC or rectified AC power supply.
  • the power supply is typically capable of delivering a voltage in the region of say 4 to 40 volts at a current rating depending on the size of the apparatus. Higher voltages may be used in larger installations when adequate safety precautions are observed.
  • a typical preferred current will be 12 to 15 amps.
  • the power source will supply 12 to 24 volts direct current or rectified alternating current, with a switch in the circuit.
  • voltages and currents are not critical. For very large installations higher voltages offer advantages because of lower currents being necessary to do comparable work.
  • tank body 1 When water of relatively low conductivity is being processed, it may be necessary to increase the number of plates 2 and reduce spacing between them and/or increase voltage in order to mai tain a satisfactory processing time of from one to three hours.
  • the tank body 1 When the tank body 1 is made of aluminium it may be connected to the positive polarity to further increase current.
  • any number of electrodes 2 will suffice.
  • the tank 1 insulated from the supply, or when a tank 1 is made of PVC, plastic, fibreglass or other non-conducting material, it is
  • SUBSTITUTE SHEET necessary to provide a minimum of two electrodes 2 of opposite polarity, but any higher number of electrodes can be used.
  • More electrodes 2 and/or closer spacing will increase the amount of current for a specified voltage, or alternatively a lower voltage can be used to maintain a specified current flow.
  • a desirable voltage range of between 4 and 24 is employed for a domestic size tank of approximately 150 imperial or 180 US gallons or 680 litres capacity. Higher voltages are not recommended in domestic installations for safety reasons.
  • the power is applied for a period of approximately one hour or longer, however, the time is not critical. Higher currents permit shorter processing times. The minimum satisfactory time taken will depend to an extent upon the voltage and current used and the initial state of the water.
  • Fig. 3 shows the process as time progresses with a dense material of coagulated contaminant deposits forming in a layer 12 on top of the water, which is a combination of fine gas bubbles and most of the contaminants including heavy contaminants.
  • This layer 12 is formed by the action of extremely small gas bubbles attracting the contaminants and forming a floe, then floating to the surface because of gas content.
  • a light fluffly or woolly looking thin layer 9 will settle to the bottom of the tank, but this layer usually occurs after the removal of the power source and some of the suspended floe has had time to settle.
  • the floating layer 12 will contain most of the contaminants and can be removed by sweeping it over the lower lip 7 into the spouting 15 and disposed of.
  • the removal can be achieved by the use of a batten fitted with a length of rubber insertion material of a length equal to the width of the tank 1 and sweeping the layer 12 over the lower lip 7 into the spouting 15 to a container (not shown) for disposal.
  • a scoop may be used for removal of this layer 12, in which case the scoop should be made of a plastic or insulating material.
  • the amount of removed material for disposal is approximately one percent of the tank capacity.
  • the power source is switched off and the layer 12 of contaminated material is swept off or otherwise removed.
  • the activity within the tank will continue for some time after the current is removed, because of the charge held in the electrode plates. . In a typical operation, after one or two hours, the time
  • SUBSTITUTE SHEET not being critical, a further sweeping of a light layer from the surface of the water is advisable but not essential for best results.
  • the treated water 11 within the tank 1 is then allowed to settle for several hours or overnight, after which the clean processed water 11 can be removed through the controlled outlet 6.
  • the controlled outlet 6 is positioned some distance above the bottom of the tank, the light layer 9 of settled material is not disturbed when the processed water 11 is removed or pumper out.
  • the tank 1 does not need to be cleaned or flushed out until after very many cycles, because the residue from one treatment cycle is mixed with the incoming water and most of it goes out with the sweeping of layer 12 on the next cycle.
  • the electrodes 2 are produced from sheet aluminium of 1.5 mm or heavier gauge, however the electrodes may be in the form of sheets, plates, rods, tubes, mesh or net, the number varied and additional electrodes made of other materials such as carbon.
  • the surface area of the electrodes 2, spacing, voltage and the conductivity of the water all contribute when determining the amount of current in the circuit. In fact, with will worn aluminium electrodes, the pitting on the surface of the electrode acts so as to effectively increase the surface area leading to increased performance.
  • the tank 1 may be made of conducting material, preferably aluminium.
  • the tank 1 may be made of non-conducting material such as fibreglass, PVC or other.
  • Tank 1 shape is unimportant other than that a square or rectangular tank is easier for removal of the floating contaminants.
  • the tank 1 When the tank 1 is made of aluminium, it may be either connected to the positive polarity or be fully insulated from the power source.
  • the tank 1 If the tank 1 is connected to the negative polarity, it will function normally, but the tank inner surface will deteriorate over a length period
  • the range is preferred between half to one miHiampere per square centimeter of electrode area of 15 to 40 miHiamperes per litre of water capacity of the treatment tank.
  • the preferred range of milliwatts per litre is 200 to 500 milliwatts. Large departures from these parameters will work satisfactorily, but with lower energy rates times will be extended.
  • treatment tanks can be anywhere from very small units suitable for travellers to carry and operate from flashlight cells or small portable units for campers to operate from automobile batteries, up to the largest installations suitable for city water supplies.
  • Electrodes are disclosed with reference to Figs. 5-8. It should be appreciated that these electrode arrangements may be used in conjunction with a wide variety of tanks and methods including those previously disclosed or suggested herein.
  • the following electrodes offer some or all of the following advantages over electrodes known in the prior art, while offering at the same time low cost and simplicity:
  • a versatile electrode arrangement 100 as shown in Figs. 5-8.
  • the electrode arrangement depicted in Figs. 5a-5h is characterized by a first bank of 5 lower electrodes 101, a second bank of 5 lower electrodes 102 (alternating with the first lower electrodes 101), a bank of 10 upper electrodes 103, and a bank of 11 full length electrodes 104.
  • the upper and lower electrodes are about half as long as the full length electrodes.
  • the upper electrodes are each associated with a vertically adjacent lower electrode.
  • the full length electrodes alternate with the other electrodes.
  • there are four terminals a, b, c and d to the electrodes which are preferrably located on the exterior of the purifying tank.
  • Terminal a is connected to the full length electrodes which are connected to one another.
  • Terminal b is connected to the first lower bank 101.
  • Terminal c is connected to the second lower bank 102.
  • Terminal d is connected to the upper bank 103. If positive voltage is applied to terminal a and negative voltage is applied to terminals b, c and d (as shown in Fig. 5a) then the current at a given voltage for the arrangement of Fig. 5a is designated 24x. It follows that the current of the terminal arrangement of Fig. 5b would be 18x.
  • the arrangements suggested in Figs. 5c and 5d yield a current of 12x, the 5c arrangement wearing out the lower electrodes only, and the 5d arrangement wearing only the upper electrodes.
  • Electrode element modules provide a greater area coverage of the bottom of the tank for a given total plate surface area and may be located approximately 70 to 80 mm above the tank bottom in a position which causes a symmetrical circular water motion, like a "figure 8" on its side, when viewed end on to the element module.
  • Gas is produced from every square centimeter of active plate surface and all gas originates in approximately the lower 30 of water, with 70% of the water being above the top of the plates. This provides a gentle but thorough circulation of water within the tank every few minutes, without any mechanical aid or moving parts.
  • Horizontal spacing between element electrode plates is around 23 mm which is not critical, but this spacing does provide easy circulation of water through the element.
  • the lower half of the full sized plates u, s and q will generate hydrogen microbubbles, whereas the top halves z, x and v will generate oxygen microbubbles.
  • the top halves will act precisely like positive plates and the bottom halves will act precisely like negative plates. Therefore these gases will rise in the same plane and intermingle, which has the effect of reducing the tendency of many small hydrogen bubbles from joining together and forming a larger hydrogen bubble.
  • the half plates are at opposite polarities, in this case the top ones being negative and the lower ones being positive, the same thing applies.
  • FIG. 7a-7h A further development is an element module as shown in Figs. 7a-7h with preferably 21 or more plates based on the principles and terminal connection arrangements of the last mentioned type, but being designed for higher conductivity water of above 900 uS/cm. With 21 plates the current range is from 6x to 0.75x or a ratio of 8:1. However for a direct comparison with the last 21 plate element of Figs 5a through 5h, this element will draw only a quarter the current for a given connection, voltage and water. This means that for high conductivity water of more than 900 uS/cm, this new element has the advantage of being capable of using a higher voltage when all the plate surfaces are energised.
  • Fig. 8 represents a section of the larger module depicted in Figs. 7a-7h and is for clarity of description.
  • This design of electrode element is particularly applicable to module elements of 21, 25, 29 and more plates.
  • negative 12 volts is applied to the top activated half plates x and t with zero positive potential on bottom half plates o and k. This will produce by voltage dividing action a potential difference of 3 between any two adjacent plate surfaces.
  • Plate gauge is preferred at about 2 mm or more. By providing more working surface area and heavier gauge element plate material, together with designs which preferably use all the surface areas of the elements, a greater life expectancy of the wearing materials is achieved. The provision of polarity reversal enhances this feature. Further it was discovered that the element plates 113 wear out first where they are in contact with the cylindrical interspacing insulator 112. To increase the life of plates, 1.6 mm gauge aluminium washers 114 (or similar washers) as shown in Fig. 10 are provided next to each side of the plates. The washers add extra material next to the insulating spacers. Both the insulating spacers 112 and washers 114 are shown as surrounding a connecting rod 115 which passes through openings in the electrode plates 113. This feature provides a further means of getting extended life from aluminium plates. Normally aluminium washers will be used with aluminium plates, the washer should be the same material as the plate where other plate materials are used.
  • SUBSTITUTESHEET water circulating effect of the rising gases will be largely lost, an additional means of circulating the water in the tank will be required.
  • a pump, circulator or agitator can be used for this purpose.

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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

On décrit un appareil d'épuration d'eau comprenant un réservoir équipé d'un réseau d'électrodes verticales en aluminium. Lorsqu'on fait passer un courant dans les électrodes, des bulles de gaz très fines sont générées et attirent les polluants pour en former un floc, qui remonte à la surface de l'eau et peut être éliminé par la suite. Un agencement d'électrodes préféré comprend une rampe d'électrodes supérieure (103) reliée à une première borne, une première rampe d'électrodes inférieure (101) reliée à une deuxième borne, une deuxième rampe d'électrodes inférieure (102) reliée à une troisième borne. Chacune des plaques d'électrode inférieures est disposée verticalement à une certaine distance d'une plaque d'électrode supérieure et est adjacente à celle-ci, dans une position bord-à-bord, chaque ensemble de plaque inférieure et supérieure formant une paire d'électrodes. Des électrodes pleine-longueur sont prévues entre chaque paire et sont reliées à une quatrième borne. L'appareil convient particulièrement à une utilisation en courant continu à basse tension. On peut, par exemple, prévoir une alimentation par capteurs solaires.
PCT/AU1991/000067 1990-02-28 1991-02-28 Systeme d'epuration d'eau WO1991013029A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AU50585/90 1990-02-28
AU50585/90A AU629305B2 (en) 1986-01-21 1990-02-28 Water cleaning system

Publications (1)

Publication Number Publication Date
WO1991013029A1 true WO1991013029A1 (fr) 1991-09-05

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AU1991/000067 WO1991013029A1 (fr) 1990-02-28 1991-02-28 Systeme d'epuration d'eau

Country Status (3)

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CN (1) CN1029832C (fr)
NZ (1) NZ237267A (fr)
WO (1) WO1991013029A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0672623A1 (fr) * 1994-03-16 1995-09-20 Commissariat A L'energie Atomique Procédé et installation de destruction de solutés organiques, en particulier d'agents complexants, présents dans une solution aqueuse telle qu'un effluent radioactif
EP1064228A4 (fr) * 1997-11-24 2003-03-05 Kaspar Electroplating Corp Procede de traitement par electrocoagulation d'eaux residuaires industrielles et appareil correspondant
EP1265817A4 (fr) * 2000-03-15 2004-05-26 Ozcent Pty Ltd Traitement de l'eau par electrolyse
EP1575875A4 (fr) * 2002-11-11 2006-07-05 Tom Gus Gavrel Appareil et procede haute pression pour traitement par electrocoagulation de fluides aqueux et visqueux
US8431009B2 (en) 2001-09-12 2013-04-30 Kaspar Electroplating Corporation Electrocoagulation reactor
US8430996B2 (en) 2010-05-26 2013-04-30 Kaspar Electroplating Corporation Electrocoagulation reactor having segmented intermediate uncharged plates

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3948832B2 (ja) * 1998-07-07 2007-07-25 三洋電機株式会社 汚水処理装置
CN102746994A (zh) * 2012-07-24 2012-10-24 哈尔滨工业大学 一种用于收集微藻的电絮凝/混凝方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU6202973A (en) * 1972-11-01 1975-05-01 Toshiyukiyokumoto Electrostatic type filtering apparatus
GB2045803A (en) * 1979-03-08 1980-11-05 Hextex Pty Ltd Electrolytic purification of effluents
AU6701386A (en) * 1986-01-21 1987-07-23 Bullock, Lynette Elsie Water treatment system
JPS62227493A (ja) * 1986-03-28 1987-10-06 Ishigaki Kiko Kk 汚泥等の浮上濃縮装置

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU6202973A (en) * 1972-11-01 1975-05-01 Toshiyukiyokumoto Electrostatic type filtering apparatus
GB2045803A (en) * 1979-03-08 1980-11-05 Hextex Pty Ltd Electrolytic purification of effluents
AU6701386A (en) * 1986-01-21 1987-07-23 Bullock, Lynette Elsie Water treatment system
JPS62227493A (ja) * 1986-03-28 1987-10-06 Ishigaki Kiko Kk 汚泥等の浮上濃縮装置

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN, C-484, page 47; & JP,A,62 227 493, (ISHIGAKI KIKO K.K.), 6 October 1987. *

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0672623A1 (fr) * 1994-03-16 1995-09-20 Commissariat A L'energie Atomique Procédé et installation de destruction de solutés organiques, en particulier d'agents complexants, présents dans une solution aqueuse telle qu'un effluent radioactif
FR2717459A1 (fr) * 1994-03-16 1995-09-22 Commissariat Energie Atomique Procédé et installation de destruction de solutes organiques, en particulier d'agents complexants, présents dans une solution aqueuse telle qu'un effluent radioactif.
US5536389A (en) * 1994-03-16 1996-07-16 Commissariat A L'energie Atomique Process and installation for the destruction of organic solutes, particularly complexing agents, present in an aqueous solution such as a radioactive effluent
EP1064228A4 (fr) * 1997-11-24 2003-03-05 Kaspar Electroplating Corp Procede de traitement par electrocoagulation d'eaux residuaires industrielles et appareil correspondant
EP1265817A4 (fr) * 2000-03-15 2004-05-26 Ozcent Pty Ltd Traitement de l'eau par electrolyse
US8431009B2 (en) 2001-09-12 2013-04-30 Kaspar Electroplating Corporation Electrocoagulation reactor
EP1575875A4 (fr) * 2002-11-11 2006-07-05 Tom Gus Gavrel Appareil et procede haute pression pour traitement par electrocoagulation de fluides aqueux et visqueux
US8430996B2 (en) 2010-05-26 2013-04-30 Kaspar Electroplating Corporation Electrocoagulation reactor having segmented intermediate uncharged plates

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Publication number Publication date
CN1029832C (zh) 1995-09-27
NZ237267A (en) 1992-11-25
CN1055719A (zh) 1991-10-30

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