WO2014128295A1 - Dispositif d'électrocoagulation - Google Patents

Dispositif d'électrocoagulation Download PDF

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Publication number
WO2014128295A1
WO2014128295A1 PCT/EP2014/053524 EP2014053524W WO2014128295A1 WO 2014128295 A1 WO2014128295 A1 WO 2014128295A1 EP 2014053524 W EP2014053524 W EP 2014053524W WO 2014128295 A1 WO2014128295 A1 WO 2014128295A1
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Prior art keywords
plates
chamber
water
unit
electro coagulation
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English (en)
Inventor
Tore ØIAN
Alena TETREAULT
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Ec Norway As
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Ec Norway As
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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
    • C02F1/463—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
    • C02F1/34—Treatment of water, waste water, or sewage with mechanical oscillations
    • C02F1/36—Treatment of water, waste water, or sewage with mechanical oscillations ultrasonic vibrations

Definitions

  • the present invention relates to improvements in an electrocoagulation device and a plant for treating industrial wastewater to reduce the content of solutes and solids in the water, so that the water may be re-used or be discharged safely, whereas solutes and solids are separated as sludge that may be further treated, used as it is, or deposited, dependent on the content thereof. More specifically, the invention relates to improvements to a device for electrocoagulation for use in treatment of wastewater.
  • Wastewater is a challenge for different industries such as oil and gas
  • Wastewater from these industries is currently being treated by means of expensive plants comprising centrifuges, filter systems and the like.
  • Different chemicals are often added to assist in the wastewater treatment, both to weaken or kill any unwanted bacteria, viruses, seeds, eggs, or any small parasite that may be present in the wastewater, and/or to assist in flotation or settling of solutes or solids present in the water.
  • Electro coagulation for treatment of wastewater is well known, i.a. from
  • GB449724 A which describes an improved electro coagulation cell where the polarity of the current is reversed to improve the efficiency of the cell. Additionally, the combination of the electro coagulation cell with a secondary separation unit for removal of the coagulated particles formed in the electro coagulation unit, is described. Gravity sedimentation, centrifugal sedimentation, filtration and magnetic separation are described.
  • EP1 174394 relates to an electro flotation reactor combined with other separation methods for treatment of wastewater.
  • the water leaving the electro coagulation unit may further be treated in a clarifying unit where centrifuges and/or gravitational techniques are used.
  • WO200405671 1 describes a method and apparatus for electrochemical treatment of contaminated aqueous media, comprising an electrochemical reactor and a sedimentation chamber optionally comprising lamellas for separation of particles from the water. It is mentioned that an ultrasound unit may be arranged at the bottom of the electrochemical reactor for removing dirt from electrodes thereof. However, no details are given about the ultrasonic unit or details on frequencies, effect etc., or the use thereof.
  • DE 2555175 A relates to a method and device for cleaning of wastewater.
  • the water to be treated is exposed to ultrasound before entering an electrochemical reactor to disinfect the water, and to emulsify and/or disperse inorganic and/or organic particulate matter present in the incoming water.
  • Ultrasound may also be used inside of the
  • electrochemical cell Effervescence is caused due to the electrolysis in the electrochemical reactors, and the ultrasound will facilitate the loosening of formed gas bubbles from the electrodes.
  • the loosened gas bubbles brings solid matter that has flocculated due to the electrochemical reactions to the water surface where it is removed as foam.
  • FR2832703 A relates to what is called sono-electrochemistry, which may be described as a combination of electrochemistry with the sonic degradation of organic compounds caused by cavitation like formation and collapsing of micro bubbles caused by ultrasound.
  • Lamella separators are a different type of separator for separating of solid material from a liquid dispersion, such as wastewater.
  • a lamella separator comprises a plurality of inclined, parallel plates forming a plurality of flow channels.
  • Solids present in a liquid introduced in the lower part of a flow channel settle at the lower surface or plate of the flow channel, and streams downwards and is collected below the flow channel, whereas the liquid having a substantially lower content of solids, is released from the top of the flow channel.
  • the plates may be made of metal, plastic material, or metal covered with a plastic material, to avoid solids to stick at the surface.
  • Lamella separators are known from i.a. US 1.190.863, US 4.151.084, and US 2008314824.
  • a known problem associated with electro coagulation units is that solids settle on the plates of the electro coagulation unit.
  • the deposited solid material sticks to the plates, and form a layer that substantially reduces the efficiency of the unit.
  • the electro coagulation unit therefore has to be stopped at more or less regular intervals to clean the plates, an operation that adds cost to the water cleaning and reduces the total efficiency of the water-cleaning unit.
  • An object of the present invention is therefore to obtain a method for
  • Another abject of the invention is to obtain an electro coagulation unit where the above-identified method is implemented. It is also an object of the present invention to provide a method for wastewater treatment, and waste water cleaning unit using the above identified method and unit for electro coagulation.
  • the present invention relates to an electro
  • coagulation unit for treatment of waste water, comprising a waste water inlet chamber a waste water outlet chamber, and an electro coagulation chamber in which a plurality of plates are arranged electrically insulated from each other and substantially parallel to each other,
  • the plates are electrodes connected to a direct current power supply so that each electrode has opposite polarity of the neighboring electrode(s),
  • waste water inlet chamber, the waste water outlet chamber and the electro coagulation chamber are arranged so that the waste water flows in between the plates of the electrocoagulation chamber to flow from the inlet chamber to the outlet, and
  • ultrasonic sound sources are arranged in a bottom part of the waste water inlet chamber, wherein the ultrasonic sound sources are arranged in the waste water inlet chamber along a first set of edges of the plurality of plates for emitting ultrasound evenly towards said edges of the plates.
  • the ultrasound treatment has no or little effect on following water treatment steps, such as floatation and settling to separate the water from the pollutants to be removed.
  • the distance from the sound sources to the opposite edges of the plurality of plates is less than 1 m, such as between 40 cm and 80 cm, or from 50 to 70 cm.
  • the ultrasound energy is reduced as a function of distance to the ultrasonic sound sources. It is found that the ultrasound may have effect on deposit removal at a distance up to 1 m, such as up to 80 cm, or 70 cm, without increasing the ultrasonic energy used so much that the solids in the water are broken down so that separation of solids by sedimentation is substantially reduced.
  • a presently preferred distance between the ultrasonic sources and the opposite edges of the plurality of plates is from about 50 to 60 cm.
  • two water manifolds each being provided with two or more water inlets are arranged for introducing wastewater into the wastewater inlet chamber. Introduction of water through a plurality of inlets makes it possible to obtain a short distance for the incoming water from introduction into the wastewater inlet chamber and into the space between the plates where the reactions are to take place.
  • the height of the wastewater inlet chamber i.e. the distance between the ultrasonic sound sources and the closest edges of the plates is from 2 - 10 cm, such as from 3 - 8 cm, or 4 - 6 cm.
  • the volume of the wastewater inlet chamber may be kept small to give a short residence time for the wastewater in the inlet chamber to reduce the degradation of solids by the ultrasound therein.
  • a short distance between the ultrasound sourced to the closest edge of the plates ascertains that the reduction of the effect of the ultrasound from the ultrasound sources is as small as possible.
  • Figure 1 shows a water treatment unit including a electro coagulation unit according to the present invention
  • Figure 2 is a cross section through an electro coagulation unit
  • Figure 3 a and 3b illustrates a front view and a side view, respectively, of an electro coagulation unit according to the present invention
  • Figure 4 is a bird's eye view of a bottom section of the present electro coagulation unit.
  • figure 5 shows a cross section along A-A of figure 4.
  • FIG. 1 is a side view of a water treatment unit 1 according to the present invention, which is arranged in a standard ISO container 2, which is a preferred unit for a mobile unit of this kind.
  • a standard ISO container 2 which is a preferred unit for a mobile unit of this kind.
  • the skilled person will understand that even though the present plant is described as a unit arranged in a container, the container as such is not a mandatory part of the invention, as the present wastewater treatment plant may be arranged outdoor, or within any suitable space.
  • a sidewall of the container is made transparent to be able to visualize the arrangement in the container.
  • the wastewater to be treated is introduced into the water treatment unit 1 through a wastewater inlet line 3.
  • the inflowing wastewater in line 3 flows through a water flow control unit 4 for controlling the amount of water introduced into the unit, and is introduced into the lower part of an electro coagulation unit 5.
  • the electro coagulation unit 5 illustrated in the figures is arranged on a rack 40.
  • Water manifolds 41 one at each side of the electro coagulation unit 5, each having two or more water inlet lines 42 are preferably connected to the electro coagulation unit 5 to allow for even distribution of incoming water over the cross section thereof.
  • the electro coagulation unit 5 may be displaceable and/or rotary
  • the electro coagulation unit may be substantially horizontally displaced as soon as the water supply line is disconnected from the water manifold 41. After being horizontally displaced the electro coagulation unit may be rotated so that the top thereof is easily accessible from the outside for emptying the unit and for cleaning thereof.
  • Ultrasound sound sources 50 are arranged in the bottom of the electro coagulation chamber 5.
  • a sound source cover plate 53 is preferably arranged to protect the sound sources 50.
  • Figure 4 illustrates a bottom plate 60 of an electro coagulation unit
  • the sound sources 50 are, as described above, preferably protected by the sound source cover plate 53 to protect the sound sources 50 from being exposed to water to be treated inside of the electro coagulation unit 5.
  • a closed space 54 is formed between the sound sources 50 and the sound cover plate 53.
  • the space 54 is filled with oil both to transfer the ultrasound waves from the sound sources 50 to the cover plate 53.
  • the oil is preferably externally cooled. Not shown oil circulation tubes connected to not shown pump(s) and cooler(s) is (are) connected to nipples 52 connected to the space 54 to allow cooling of the oil and thereby the sound sources.
  • the surface of the sound cover plates 53 facing the water to be treated is preferably coated with an anti-corrosion coating.
  • FIG. 2 is a cross section through an electro coagulation chamber 47 of the electro coagulation unit 5.
  • the electro coagulation unit 5 has outer walls 30, 31 made of a material that is non-conductive to electrical power. Plates 32, 33 are arranged substantially vertically and parallel to each other inside the electro coagulation unit 5 and are held in place by means of recesses 31 'in the walls 31. Plates 32 indicated by dotted lines act as electrodes are made of mild steel.
  • the electrodes are connected to not shown source of electrical power supplying direct current so that one electrode has the opposite polarity to the adjacent electrode(s).
  • the plates 33 arranged between the electrodes are made of aluminum and are not connected to any power source. For the case of clarity, when plates 32, 33 are mentioned in the present description and claims, the mentioning refers to either the plates connected to an electric source, i.e. the electrodes 32, and / or the plates 32 not connected to an electric source.
  • the water introduced into the electro coagulation unit from the manifolds 41 is introduced into a wastewater inlet chamber 45, being defined by the sidewalls or the unit, a bottom plate 53, and the lower edge of the plates 32, 33.
  • the wastewater introduced into the wastewater inlet chamber 45 flows into the electro coagulation chamber 47 and into the space therein defined between the plates 32, 33.
  • the water flows from the bottom of the unit to the top thereof but the direction of flow is not critical as long as it is ascertained that the water flows in substantially the same direction, i.e. from an inlet to an outlet and that the water flows between the plates.
  • the polarity of the electrodes is preferably reversed according to a preset program typically shifting the polarity every 2 - 20 minute.
  • the wastewater treated in the electro coagulation chamber 47 flows into a wastewater outlet chamber, from which the water flows further through the cleaning device as described herein.
  • the plates 33 influence the electrical field in the electro coagulation unit and contribute to the electrical and chemical processes therein.
  • the distance between the plates 32, 33 in the electro coagulation unit is typically less than 20 mm, such as less than 10 mm. To allow water to flow between the plates, the distance is preferably more than 3 mm. A presently preferred distance for the present method and device is about 6 mm.
  • the voltage between the electrodes 32 is normally from 50 to 150 volt.
  • the power consumption of the present electro coagulation unit is typically 0.1 to 2 kWh/m 3 , such as about 1 kWh/m 3 wastewater. The power consumption and the flow rate through the electro coagulation unit may vary with the source of the wastewater and the kind and amount of solutes and solids therein.
  • the ultrasonic sound sources 50 are operated continuously to prevent the formation of deposits of solid material onto the plates and electrodes of the electro coagulation unit 5, or intermittently to remove deposited material on the plates and electrodes.
  • the effect of the ultrasound for avoiding the deposit formation on the plates and electrodes of the electro coagulation unit, or for removal of deposited material, is highly dependent on the distance to an ultrasonic sound source. Tests have indicated that the tested ultrasonic sound sources are efficient in avoiding formation of deposits and/or removing deposits from the plates and electrodes of the electro coagulation unit at a distance of 50 to 70 cm. This fact requires has to be considered in the construction of the electro coagulation unit.
  • the illustrated electro coagulation unit has a height from the bottom part where the ultrasonic sound sources are arranged, to the outlet of the chamber of about 60 cm, whereas a unit without ultrasonic sound transmitters normally would be substantially higher, such as about 150 cm.
  • the electro coagulation obtained depends on the residence time of the water inside the electro coagulation chamber 46, in combination of the effect of the electrical current at the electrodes, and the ultrasonic sound sources.
  • the result of the treatment i.e. efficiency of the treatment, is also dependent on a balance between the supplied electrical energy and ultrasound energy.
  • the residence time is dependent on the volume flow, and the volume of the electrocoagulation chamber 46.
  • the cross section of the electro coagulation chamber is preferably increased by increasing the length and width of the chamber 46, and increasing the number of plates 32, 33.
  • the volume of the wastewater inlet chamber 45 is kept as small as
  • the main role of the ultrasound is to prevent, or remove, deposits of solids on the plates, deposits that may reduce the efficiency of the electro coagulation process, and that may eventually clog the passage between the plates.
  • a short residence time in the wastewater inlet chamber 45 is important for reducing the action of the ultrasound on the particles in the wastewater.
  • the wastewater inlet chamber 45 fills an area substantially equal to the cross section of the electro coagulation unit, and has a height of 2 to 10 cm from the sound source cover plate 53 at the bottom of the unit 5.
  • the height of the wastewater inlet chamber has to be sufficient to allow for introduction of water from the wastewater inlets 42, but be sufficiently low to have shortest possible distance from the sound source cover plate 53 to the lower edges of the plates 32, 33 to allow the ultrasound to have sufficient effect over the total area of the plates.
  • a separation wall 8 is preferably arranged in the settling tank 7 close to the channel 6 and across the direction of the flow from the channel 6, to reduce uncontrolled vortex formation in the settling chamber 7.
  • the solids in the water may have a density that is higher than water or heavier than water.
  • the solids that are lighter than water will float in the settling chamber and will eventually be present at the surface of the settling chamber.
  • the solids that are heavier than water will sink to the bottom of the settling chamber.
  • a stirrer 9, operated by an electric motor 10 may be provided in the settling chamber to allow the reactions to continue, and to allow further
  • Material floating at the surface of the water in the settling tank i.e. the solids having a density lower than water
  • the scraper illustrated in figure 1 comprises an endless band 12 onto which scraper blades 13 are arranged.
  • the material scraped off the water surface is collected in a flotation tray 14, and removed through a flotation withdrawal line 15 and removed from the separation unit through a flotation outlet 16.
  • a separation unit 20 is separated from the settling chamber 7 by means of a separation wall 21 but is in fluidly contact with the water in the settling tank through one or more openings 22 close to the bottom of the settling chamber. According to one embodiment, the fluidly contact is through an opening 22 in the form of a horizontal fissure formed between the bottom of the settling chamber and the lower end of the separation wall 21.
  • the separation unit 20 is divided in a separator chamber 23 at the lower end of the separation unit 20, a lamella separator 24, in the middle part of the separation unit, and a clean water collector 25 at the top of the separation unit.
  • the water entering the separation unit 20 through opening(s) 22 first enters the separator chamber 23, and is led upwards from the separator chamber 23, through the lamella separator 24.
  • the lamella separator 24 comprises a plurality of straight flow channels for leading water from the separator chamber 23 towards the clean water collector 25.
  • the flow channels Preferably, the flow channels have a hexagonal cross section of the same dimension so that the lamella separator 24 has a
  • hexagonal flow channels like cross section.
  • the distance between two parallel walls of the flow channels of the hexagonal type is typically from about 2 to 10 cm, such as from 3 to 8 cm.
  • the hexagonal flow channels are arranged so that each of the walls of a flow channel is a wall of a
  • the flow channels of the lamella separator is preferably made of a plastic material having a surface that will not cause solid particles settling at the surface to stick but will allow the particles to flow against the water flow and to fall back into the separator chamber 23 to settle at the bottom thereof.
  • a plastic material having a surface that will not cause solid particles settling at the surface to stick but will allow the particles to flow against the water flow and to fall back into the separator chamber 23 to settle at the bottom thereof.
  • the straight flow channels will cause the water therein to have a substantially laminar flow, and thus reduce turbulence that could cause the solid particles to be whirled up into the water stream.
  • the flow channels are tilted relative to the vertical flow direction. Solids present in water present in the flow channels will settle at the lower surface of the flow channel, and will flow downwards, towards the lower end of the channel. Due to the tilt angle, the settling path for a solid particle is short, resulting in a short settling time.
  • the tilting angle of the flow channels relative to a vertical plane may be between 10 and 80°. A small angle will not result in a sufficient shortening of the settling path, and will thus not result in a sufficiently high degree of settling in the lamella separator. A large angle may cause accumulation of solids in the flow channel, as a large angle will cause the flow of sediment towards the lower opening of the lamella separator to slow or even stop. An angle from 20 to 70°, such as e.g. about 30 °, will often be a good compromise for obtaining a sufficiently long flow path, and for avoiding accumulation of solids in the flow channel.
  • a sediment bleeding unit 26 is arranged at the bottom of the separation chamber 23 for withdrawing the sediment from the separator chamber 23 and from the lamella separator 24, through a sediment discharge line 27 arranged at the bottom of the separator chamber 23.
  • the sediment is periodically bled out through the sediment bleeding unit 26, with periods that are adjusted to allow the sediment to thicken to reduce the water content thereof, and at the same time prevent building up a too thick layer of sediment.
  • the sediment bleeding unit 26 may in its simplest form comprise a
  • the clean water weir collector 25 is arranged above the lamella separator 24, and may comprise one or more trays that are open upwards, that will collect water that has passed through the lamella separator 24, to collect the water at surface of the water the top of the separation unit 20.
  • the clean water collected by the clean water collector is withdrawn through a clean water line 28 to be led to the clean water consumers, or for releasing the water to the surroundings.
  • the electro coagulation unit 5 may have higher capacity than the
  • An outlet for electro-coagulated water 29 may be provided in channel 6 to allow transfer of water that has been treated in the electro coagulation unit to a separate unit not comprising an electro coagulation unit.
  • a power supply unit 35 is preferably arranged inside the present unit to avoid dependency of external equipment to convert electrical power to direct currency, and to any special voltage needed by any internal equipment inside the unit. Additionally, a control unit 36 is provided to control the process in the present unit. Parameters to be controlled may be volume of incoming water to be treated, electrical current to the electrode, and electrode polarity, stirring by stirrer 9, speed of scraper 1 1 , removal of deposits by sediment bleeding unit 26, water level in different
  • the illustrated wastewater treatment unit arranged in a container makes the wastewater treatment unit transportable, so that the unit may be transported and easily installed at the location were the unit is needed.
  • the unit has to be connected to a power supply to deliver the power that is needed to the power supply unit.
  • lines for connecting the unit to the source of wastewater through line 3, for withdrawal of the cleaned water from clean water line 28, and lines for withdrawal of waste from the flotation line 17 and the sediment removal line 27, have to be connected to the unit.
  • the present method and device makes it possible for high capacity
  • a lamella separator is especially preferred for the secondary separation by settling.
  • the volume of the settling tank is a limiting factor for the capacity of the presently claimed plant.
  • the electro coagulation unit and the lamella separator may both be easily scaled according to the volume of the settling tank. Calculations and tests estimates that an efficient treatment of wastewater from different sources may be obtained with a mean residence time in the plant of about 15 minutes in the settling tank. In other words, the present wastewater treatment having a settling tank of 2 m 3 will have a treatment capacity of about 8 m 3 wastewater per hour. .
  • Fracking a method for preparing shell gas wells for production.
  • Fracking includes injection of water and optional additives into a wellbore, and large amount of water is returned up to the ground. Often fracking is performed in dry areas, and there is a need to recycle the water. At other locations, environmental requirements do not allow for discharging untreated water into the surroundings.
  • the water returned from the well bore is highly contaminated with solutes and solids and has to be treated if it is to be re-used or to be released into the surroundings to avoid spillage of unwanted materials of chemicals to the surroundings.
  • the present device also has the advantage of being compact. By building the device into a container, the wastewater treatment unit is highly mobile and may be easily transported to the source of wastewater.
  • the present wastewater unit is for wastewater from plant for washing of potatoes. Soil has to be washed from the potatoes for different further processing may be performed on the potatoes. To avoid contamination of potato fields with parasitic cyst nematodes, water-containing soil from potatoes has to be treated as special waste and deposited in special deposits for several years. Tests performed indicate that the present method including electro coagulation of the wastewater disinfects the soil, by killing infections materials, such as bacteria, and other parasites, such as nematodes. It is therefore assumed that the soil released from the present method and plant may be released directly for use as at a potato field, or that the deposit time may be substantially reduced from the current situation.
  • a pilot plant as described above was tested for treating of waste water from oil drilling activity brought ashore for waste water treatment according to the standard procedures.
  • the electro coagulation unit used in the pilot plant has a height of 55 cm from the bottom plate wherein the ultrasonic sound sources are arranged as shown in the figures herein, a bed length of 82 cm and a bed width of 17 cm.
  • the wastewater flow was about 6 to 10 m 3 /hour.
  • the voltage between the electrodes 32 was adjusted to give a current of about 200 A, which corresponds to a voltage from about 30 to 70 Volt.
  • the resulting power consumption was about 1 kWh/m 3
  • the polarity of the current was reversed to at prescheduled intervals to remove / reduce the amount of deposits on the electrodes.
  • the buildup of deposits at the electrodes reduces the conductivity of the system, and thus the current at a set voltage.
  • the intervals are set to ascertain that the current is not reduced more than 10% relative to the intended value indicated above, even though the buildup is dependent on the composition of the incoming water to be treated.
  • the polarity is reversed at time intervals between 1 to 10 minutes.
  • the electrodes were covered by deposits after 15 to 30 minutes, and had to be cleaned manually. Operation of the present pilot plant using the ultrasonic sound sources as described above, i.e. by using 18 ultrasonic sound sources at a frequency of 25 kHz and a maximum effect per sound source of 45 W or total effect of 810 W. The effect of the ultrasonic sound sources was set at a level sufficient to keep the plates and the electrodes free of deposits. The plates and electrodes become eroded during operation and have to be changed after about two weeks. The plates and electrodes were kept free of deposits during such a two weeks period by the use of the present ultrasound emitters.

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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 une méthode de traitement d'électrocoagulation des eaux usées, la circulation des eaux usées étant engendrée entre des plaques agencées de façon parallèle en même temps que leur exposition à un champ électrique dans une chambre d'électrocoagulation, la chambre d'électrocoagulation étant exposée à des ultrasons pendant le fonctionnement afin d'éviter la formation de dépôts sur les plaques, ou pour enlever les dépôts formés sur les plaques pendant leur fonctionnement. L'invention concerne aussi une méthode de traitement de l'eau comprenant la méthode mentionnée, une unité d'électrocoagulation et un dispositif de traitement de l'eau comprenant l'unité d'électrocoagulation de l'invention.
PCT/EP2014/053524 2013-02-22 2014-02-24 Dispositif d'électrocoagulation Ceased WO2014128295A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US201361767895P 2013-02-22 2013-02-22
NO20130288 2013-02-22
NO20130288 2013-02-22
US61/767,895 2013-02-22

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107986404A (zh) * 2018-01-19 2018-05-04 河南洁达环保投资有限公司 电絮凝移动应急污水处理车

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GB449724A (en) 1935-08-27 1936-07-02 Mckee & Co Arthur G Apparatus for the electrical precipitation of suspended particles from gases
DE2555175A1 (de) 1975-02-18 1976-08-19 Voest Ag Verfahren und vorrichtung zum reinigen von abwaessern
US4151084A (en) 1977-10-06 1979-04-24 Water Purification Associates Lamella separators
SU1604748A1 (ru) * 1988-01-05 1990-11-07 Казанский научно-исследовательский технологический и проектный институт химико-фотографической промышленности Производственного объединения "Тасма" Электрокоагул тор
EP1174394A2 (fr) 2000-07-21 2002-01-23 ADER Abwasser Anlagen AG Procédé et dispositif d épuration d eaux usées
FR2832703A1 (fr) 2001-11-29 2003-05-30 Electricite De France Dispositif sono-electrochimique et procede sono-electrochimique de degradation de molecules organiques
WO2004056711A1 (fr) 2002-12-23 2004-07-08 Envirogain Inc. Procede et appareil de traitement electrochimique de milieu aqueux souille
WO2007050041A1 (fr) * 2005-10-28 2007-05-03 Thiam Seng Lee Dispositif avance d'electrocoagulation et processus pour son utilisation dans le traitement des eaux usees
US20080314824A1 (en) 2004-11-03 2008-12-25 Brandenburgische Technische Universität Cottbus Method for Decomposing Biogenic Material
US20090107915A1 (en) 2007-03-12 2009-04-30 Its Engineered Systems, Inc. Treatment process and system for wastewater, process waters, and produced waters applications
US20090321251A1 (en) 2008-06-26 2009-12-31 David Rigby Electrochemical system and method for the treatment of water and wastewater

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1190863A (en) 1916-01-26 1916-07-11 Charles Louis Corne Settling-tank.
GB449724A (en) 1935-08-27 1936-07-02 Mckee & Co Arthur G Apparatus for the electrical precipitation of suspended particles from gases
DE2555175A1 (de) 1975-02-18 1976-08-19 Voest Ag Verfahren und vorrichtung zum reinigen von abwaessern
US4151084A (en) 1977-10-06 1979-04-24 Water Purification Associates Lamella separators
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