WO2009128573A1 - Grille de désinfection électrique utilisant des électrodes virtuelles pour traiter de l'eau infectée et système de traitement de l'eau l'utilisant - Google Patents

Grille de désinfection électrique utilisant des électrodes virtuelles pour traiter de l'eau infectée et système de traitement de l'eau l'utilisant Download PDF

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Publication number
WO2009128573A1
WO2009128573A1 PCT/KR2008/002166 KR2008002166W WO2009128573A1 WO 2009128573 A1 WO2009128573 A1 WO 2009128573A1 KR 2008002166 W KR2008002166 W KR 2008002166W WO 2009128573 A1 WO2009128573 A1 WO 2009128573A1
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Prior art keywords
water
anode
cathode
metal wire
water treatment
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Ceased
Application number
PCT/KR2008/002166
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English (en)
Inventor
Hong Soon Kim
Kue Sang Chun
Kee Young Park
Eun Jung Shin
Chang Kook Kim
Bu Nyung Kang
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KWANGSAN CO Ltd
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KWANGSAN CO Ltd
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Publication of WO2009128573A1 publication Critical patent/WO2009128573A1/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
    • C02F1/467—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
    • C02F1/46—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
    • C02F1/467—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrochemical disinfection; by electrooxydation or by electroreduction
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
    • C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
    • C02F1/467—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrochemical disinfection; by electrooxydation or by electroreduction
    • C02F1/4672—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrochemical disinfection; by electrooxydation or by electroreduction by electrooxydation
    • C02F1/4674—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrochemical disinfection; by electrooxydation or by electroreduction by electrooxydation with halogen or compound of halogens, e.g. chlorine, bromine
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
    • C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
    • C02F1/46104—Devices therefor; Their operating or servicing
    • C02F1/46109—Electrodes
    • C02F2001/46152—Electrodes characterised by the shape or form
    • C02F2001/46157—Perforated or foraminous electrodes
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
    • C02F2103/008—Originating from marine vessels, ships and boats, e.g. bilge water or ballast water
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2201/00—Apparatus for treatment of water, waste water or sewage
    • C02F2201/46—Apparatus for electrochemical processes
    • C02F2201/461—Electrolysis apparatus
    • C02F2201/46105—Details relating to the electrolytic devices
    • C02F2201/4612—Controlling or monitoring
    • C02F2201/46125—Electrical variables
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2201/00—Apparatus for treatment of water, waste water or sewage
    • C02F2201/46—Apparatus for electrochemical processes
    • C02F2201/461—Electrolysis apparatus
    • C02F2201/46105—Details relating to the electrolytic devices
    • C02F2201/4616—Power supply
    • C02F2201/4617—DC only
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00—Controlling or monitoring parameters in water treatment
    • C02F2209/001—Upstream control, i.e. monitoring for predictive control
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00—Controlling or monitoring parameters in water treatment
    • C02F2209/003—Downstream control, i.e. outlet monitoring, e.g. to check the treating agents, such as halogens or ozone, leaving the process
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00—Controlling or monitoring parameters in water treatment
    • C02F2209/30—H2
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00—Controlling or monitoring parameters in water treatment
    • C02F2209/36—Biological material, e.g. enzymes or ATP

Definitions

  • the present invention relates to an electric disinfection grid electrode for treating sea water, sewage water, waste water and the like, and, more particularly, to a grid electrode for water treatment using virtual electrodes, in which microbes and the like included in sea water and the like can be effectively removed using a direct-current (DC) power supply of low voltage and low current, and simultaneously chemical disinfection effects caused by hypochlorite produced by electrolysis using low current can also be obtained, and to a water treatment system using the same.
  • DC direct-current
  • ballast water treatment method for disinfecting microbes of 50 ⁇ m or less, phytoplankton, zooplankton, E.coli, escherichia coli, toxic vibrio cholerae and the like, a filtering method, a chlorine disinfection method, an ultraviolet (UV) disinfection method, an ozone disinfection method, an electrolytic disinfection method or the like is being used.
  • UV ultraviolet
  • the mechanical filtering method is disadvantageous in that high-priced filters must be used in order to filter out organisms of 5 ⁇ 10 ⁇ m and in that maintenance cost is increased because filters are corroded or clogged. Furthermore, this filtering method is also problematic in that disease-causing germs, such as bacteria and the like, cannot be removed.
  • U.S. patent No. 5816181 discloses a method of heating ballast water using the heat discharged from a ship's engine.
  • ballast water When ballast water is maintained at a temperature of 35 ⁇ 45 0 C for a predetermined time, large organisms, such as small fish, can be killed, but small organisms, such as microbes, cannot be completely eliminated. Therefore, this method is disadvantageous in that the kill-rate of microbes is low and in that costs are increased because heat sources, heat exchangers, pumps and piping equipment must be additionally provided.
  • U.S. patent No. 6773611 discloses a chemical water treatment method in which the concentration of chlorine dioxide in a ballast tank is automatically controlled using a chlorine disinfection apparatus.
  • This chemical water treatment method requires facilities for loading a powdered or liquid biocidal agent in a ship and introducing the biocidal agent into a ballast water pipe line and then mixing the biocidal agent in ballast water or facilities for producing a strong active oxidizing disinfectant in a ship.
  • These facilities are very complicated chemical process treatment systems, and are required to occupy sufficient space and to be strictly managed. Further, these facilities are most problematic in that chlorine oxides or acidic byproducts having a harmful influence on a coastal ecosystem are produced, and thus an apparatus for preventing the production of the chlorine oxides or acidic by-products is additionally required.
  • Ozone (O 3 ) may exemplify a gaseous biocidal agent.
  • U.S. patent No. 6125778 discloses a method of treating ballast water using ozone (O 3 ) produced from a ship. Since ozone is harmful to the human body, this method is disadvantageous in that it is required that ozone which is not dissolved by the sea water must be emitted from ballast water into the air when the ballast water is discharged, and in that large-size microbes cannot be killed.
  • U.S. Patent No.7005074 discloses a method of disinfecting ballast water using ultraviolet (UV) rays.
  • UV ultraviolet
  • U.S. Patent No. 6800206 discloses an electrolytic disinfection method. In this method, underwater microbes or cells are killed by ions generated through electrolysis.
  • U.S. Patent No. 7244348 discloses an apparatus for producing a hypochlorite chemical biocidal agent by electrolyzing sea water on a voyage at sea. This apparatus has additional problems in that a high- voltage power supply is required to electrolyze sea water, chlorine oxides harmful to the natural environment are produced, and hydrogen produced by the electrolysis of water must be safely removed. Disclosure of Invention Technical Problem
  • the present invention has been made to overcome the above-mentioned problems, and the present invention provides a grid electrode for water treatment, which can effectively remove microbes, bacteria and other organisms present in water without causing conventional harmful side effects, and a water treatment system using the same.
  • an object of the present invention is to provide a grid electrode for water treatment, in which production and maintenance costs can be reduced because it can be easily installed and maintained, and which can effectively remove microbes, bacteria and other harmful organisms present in water even if only a small space for installing the grid electrode is provided, and a water treatment system comprising the same.
  • an aspect of the present invention provides a grid electrode for water treatment using a virtual electrode, including: an anode including a conductive metal wire which is vertically extended in a parallel zigzag pattern in a same plane; and a cathode including a conductive metal wire which is horizontally extended in a parallel zigzag pattern in a same plane, wherein the anode and cathode are spaced apart from each other such that the metal wire of the anode and the metal wire of the cathode intersect each other.
  • the anode may include a first plate-like frame and the conductive metal wire vertically extended in a parallel zigzag pattern and disposed on the first plate-like frame
  • the cathode may include a second plate-like frame and the conductive metal wire horizontally extended in a parallel zigzag pattern and disposed on the second plate-like frame.
  • Each of the conductive metal wires of the anode and cathode may include at least one main line and a plurality of branch lines extending from the at least one main line parallel thereto.
  • the grid electrode may be connected to a direct-current (DC) power supply, and the
  • DC power supply may supply current and voltage to the grid electrode such that the current and voltage does not exceed 50 V and 10 mA/cm 2 , respectively.
  • the conductive metal wire may be made of one selected from among nickel (Ni), chromium (Cr), stainless steel, titanium (Ti), iridium (Ir) and alloys thereof.
  • Another aspect of the present invention provides a water treatment system comprising the grid electrode in a plural number, wherein the plurality of grid electrodes is disposed in series in a ballast water flow pipe of a ship at interval distances, and is connected to a direct-current (DC) power supply.
  • DC direct-current
  • microbial fluorometers for measuring a concentration of microbes included in water to be treated and flowing along the ballast water flow pipe may be provided at the front, rear or both sides of the grid electrodes.
  • a hydrogen gas detector for monitoring a concentration of hydrogen gas produced by the electrolysis of the water to be treated may be provided at the rear of the grid electrodes.
  • the current of the DC power supply may be automatically controlled when the concentration of the hydrogen gas detected by the hydrogen gas detector exceeds a predetermined value.
  • the grid electrode of the present invention is advantageous in that its structure is simple, its production cost is low, and it can effectively remove microbes, bacteria and other harmful organisms included in water to be treated, such as various kinds of sewage-waste water including ballast water. Therefore, it is very excellent in terms of energy efficiency, and is very economical in terms of production cost.
  • the grid electrode of the present invention can be conveniently installed in a ballast water flow pipe and the like, additional water treatment facilities are not required, and since it can be installed in a small space, it is very efficient in terms of space requirements.
  • the grid electrode of the present invention is advantageous in that it can prevent the generation of environmental pollutants because it employs a method of killing and removing organisms by perforating their membranes and is operated using a low voltage and low current, and in that it has an immediate effect on the removal of microbes and the like.
  • the grid electrode of the present invention and the water treatment system using the same can be widely used in the treatment of excretions in a ship or in the purification of general domestic water, waste water, sewage water and the like as well as in the treatment of ballast water.
  • FIG. 1 is a view showing a grid electrode composed of an anode and a cathode according to the present invention
  • FIG. 2 is a partially-cutaway perspective view showing a water treatment system in which the grid electrodes are serially arranged in a ballast water flow pipe according to an embodiment of the present invention
  • FIG. 3 is a view showing the state in which a power supply is connected between the anode and cathode according to the present invention
  • FIG. 4 is a schematic view showing an example of virtual electrodes formed by the grid electrode according to the present invention.
  • FIG. 5 is a graph showing the current flow between the virtual electrode and its adjacent electrode according to the present invention.
  • FIG. 6 is a view showing the formation of the virtual electrode between the anode and cathode according to the present invention.
  • FIG. 7 is a schematic sectional view showing a water treatment system according to an embodiment of the present invention.
  • FIG. 8 is a schematic sectional view showing a water treatment system according to another embodiment of the present invention.
  • FIGS. 9 and 10 are views showing modified grid electrodes according to the present invention. Best Mode for Carrying out the Invention
  • the present invention relates to an apparatus for disinfecting microbes, colon bacilli, bacteria and the like present in ballast water using electroporation, in which a cell membrane is destroyed by an electric field formed by applying a direct current to sea water, or using hypochlorite having strong oxidative activity, which is obtained from the electrolysis of sea water by a direct current.
  • the apparatus is a disinfection apparatus in which grid electrodes, each including an anode and a cathode made of conductive wire, are installed in a ballast water flow pipe at predetermined distances, and a voltage is applied thereto, so that electric current flows through the total space between the anode and the cathode, thereby destroying all microbes and bacteria included in sea water using electrical shock or hypochlorite.
  • the present invention relates to an electric disinfection grid electrode using three-dimensional virtual electrodes, in which microbes and disease-causing germs including colon bacilli included in sea water, waste water and sewage water can be killed by applying a direct voltage of 50 V or less thereto at a current density of 10 mA/cm 2 using electroporation or hypochlorite produced by the electrochemical reaction of sodium chloride in sea water, and to a water treatment system using the same.
  • bioprobes or medicines are administered into cells using electroporation.
  • a potential difference of 1 V or more is generated around a cell membrane which is a nonconductor, holes are formed in the cell membrane due to dielectric breakdown, and, at this time, the bioprobes or medicines are instantaneously administered into the cells through the holes.
  • the holes must be instantaneously opened, and, if a voltage is continuously applied to the cells, the cells are killed.
  • the present invention is used to disinfect microbes using this phenomenon. That is, in the present invention, a low voltage current is applied to sea water which is a conductor, so that a potential difference of 1 V or more is generated around a cell membrane, with the result that the cell membrane dielectrically breaks down, thereby permanently killing the microbes. Generally, since the thickness of a cell membrane is only several micrometers, the cell membrane dielectrically breaks down even when only a potential difference of 1 V is generated therearound.
  • hypochlorite having strong oxidizing power is produced by the low- voltage electrochemical reaction of sodium chloride in sea water while minimizing the production of hydrogen, and, due to the oxidation of the hypochlorite, the microbes are killed.
  • FIG. 1 is a view showing a grid electrode composed of an anode and a cathode according to the present invention
  • FIG. 2 is a partially-cutaway perspective view showing a water treatment system in which the grid electrodes are serially arranged in a ballast water flow pipe according to an embodiment of the present invention
  • FIG. 3 is a view showing the state in which a power supply is connected between the anode and cathode according to the present invention.
  • a grid electrode 100 of the present invention is composed of an anode 110 and a cathode 120.
  • the anode 110 is configured such that a conductive metal wire 114 is vertically extended in a parallel zigzag pattern in the same plane
  • the cathode 120 is configured such that a conductive metal wire 124 is horizontally extended in a parallel zigzag pattern in the same plane.
  • the anode 110 and cathode 120 are spaced apart from each other such that the metal wire 114 of the anode 110 and the metal wire 124 of the cathode 120 intersect each other.
  • the metal wires 114 and 124 may be made of one selected from among silver (Ag), nickel (Ni), chromium (Cr), stainless steel, titanium (Ti), iridium (Ir) and alloys thereof, which have excellent corrosion resistance.
  • the anode 110 and cathode 120 are fixed on different frames
  • the sufficient residence time for microbes or bacteria in sea water or waste water to interact with the current flow can be obtained by adjusting the distance between the anode 110 and cathode 120. Due to the adjustment of the distance between the anode 110 and cathode 120, the flow rate of direct voltage and current can be controlled such that a sufficient disinfection effect of microbes or bacteria can be exhibited without electrolyzing a large amount of water.
  • the grid electrodes 100 each of which is composed of the anode and cathode, are repeatedly installed in the ballast water flow pipe at predetermined distances, microbes or bacteria which are not killed while they pass through the first grid electrode are completely killed while they pass through subsequent grid electrodes, such as the second, third, fourth... electrodes.
  • low current and low voltage are applied to the grid electrode, so that hypochlorite having strong oxidizing power is produced by the electrochemical reaction of sodium chloride in sea water, with the result that organic microbes are oxidized by the hypochlorite, thereby killing the organic microbes.
  • Sea water has high electric conductivity because sodium chloride (NaCl) and other salts are dissolved therein.
  • NaCl sodium chloride
  • the average electric conductivity of sea water having a salinity of 30 ppt at a temperature of 2O 0 C is 35400 S/cm, approximately 30 Ohm/cm.
  • direct current is applied to a sea water flow pipe connected to a ballast tank at a current density of about 10 mA/cm 2 for about 1 ms (0.001 second)
  • microbes included in the sea water are completely killed.
  • the distance between the anode 110 and cathode 120 are determined such that the time taken the sea water to pass through the anode 110 and cathode 120 is 1 ms (0.001 second) or more.
  • water treatment is not conducted by providing a plurality of anode and cathode spots, and the infinite anode and cathode spots are not fabricated into real electrodes. That is, in the present invention, as shown in FIG. 1, grids are formed by arranging metal wires in one direction, and, as shown in FIG. 2, the anode 110 and cathode 120 are provided in a water flow pipe 200 such that they face each other at right angles.
  • FIG. 4 is a schematic view showing an example of virtual electrodes formed by the grid electrode according to the present invention.
  • A, B and C points of the metal wire 114 of the anode 110 correspond to A', B 'and C 'points of the metal wire 124 of the cathode 120. That is, when perpendicular lines are respectively drawn from the A, B and C points of the metal wire 114 of the anode 110 onto the metal wire 124 of the cathode 120, the perpendicular lines meet the A', B'and C'points of the metal wire 124 of the cathode 120, respectively.
  • the straight lines AA', BB'and CC are shortest, so that the resistance values of sea water on these straight lines are lowest, with the result that the highest current flows on these straight lines.
  • the A and A', B and B'and C and C ' function as point electrodes.
  • many virtual electrode points are realized by forming metal wires, which can be easily fabricated, into line grids without really fabricating these point electrodes.
  • G is an intermediate point of A and B
  • G' is an intersection point of AB' and BA'.
  • FIG. 5 is a graph showing the current flow between the virtual electrode and its adjacent electrode according to the present invention
  • FIG. 6 is a view showing the formation of the virtual electrode between the anode and cathode according to the present invention.
  • the line drawn from the top left to the bottom right represents the intensity of current flowing from the anode spot A to the virtual cathode spot B'adjacent to the cathode spot A'.
  • a maximum current of i2 flows between AA'
  • a current of il which is smaller than i2 flows between AB'because the distance of AB 'is larger than that of AA'. From FIG.
  • FIG. 6 shows only the current flow from the anode spot A to the adjacent spot thereof.
  • FIG. 7 is a schematic sectional view showing a water treatment system according to an embodiment of the present invention
  • FIG. 8 is a schematic sectional view showing a water treatment system according to another embodiment of the present invention.
  • the distance (d) between the anode 110 and cathode 120 and the distance (D) between the grid electrodes are set to have sufficient contact time in consideration of the flow rate of ballast water in the conduit of a ballast water treatment apparatus such that the disinfection of microbes through electroporation can be conducted by sufficiently exposing the microbes to the current field.
  • the distance (d) between the anode 110 and cathode 120 is determined such that the flow rate of ballast water passing through the anode and cathode 110 and 120 is 1 ms (0.001 s) or more, and the distance (D) between the grid electrodes is determined to allow a delay time of 10 ms.
  • DC voltage is increased in proportion to the increases in the distances 'd' and 'D'.
  • the hypochlorite produced by this electrochemical reaction additionally kill microbes or bacteria in addition to the above electroporation.
  • hydrogen gas is also produced.
  • the current density is automatically controlled using a DC power supply 300 such that the production rate of hydrogen gas does not exceed 0.1%, which is 1/40 of the lowest safety explosion level of 4%, by monitoring the amount of the produced hydrogen gas using a hydrogen gas detector 310.
  • This very small amount of hydrogen gas is introduced into a ballast tank together with ballast water and then discharged to the outside of the ballast tank through an exhaust port of the ballast tank.
  • the hydrogen gas detector 310 may be provided at the rear of the grid electrode 100.
  • microbes, disease-causing germs such as colon bacilli and the like included in sea water, waste water and sewage water are killed using elecroporation and hypochlorite.
  • a pair of grid electrodes 100 as shown in FIG. 7, several pairs of grid electrodes may be serially disposed at distances (D).
  • Microbial fluorometers 320 may be provided at the front, rear or both sides of the grid electrodes 100 acting as a microbial disinfection unit.
  • the microbial fluorometer serves to measure the concentration of the microbes infiltrated in the ballast water flow pipe 200 and thus to allow the DC power supply 300 to automatically control the voltage and current density suitable for each of the grid electrodes 100.
  • the distance between each pair of the grid electrodes 100 may be set such that microbes can stay in the electric field for 10 ms regardless of the flow rate of ballast water, and the direct-current voltage applied to the grid electrodes 100 may be controlled to have desired values.
  • NADH nicotinamide adenine dinucleotide
  • ballast water may be discharged in a direction opposite to the intake of the ballast water.
  • the present invention relates to an apparatus for killing microbes and disease-causing germs included in sea water by applying a direct voltage of 50 V thereto at a current density of 10 mA/cm 2 through electroporation using several pairs of grid electrodes 100 installed in the ballast water flow pipe. Further, the present invention relates to an apparatus for killing microbes and disease-causing germs included in sea water using hypochlorite produced by the electrochemical reaction of sodium chloride in the sea water by applying current to the sea water.
  • the present invention related to an apparatus for disinfecting sea water such that the contents of ecosystem-destructible organisms, such as zooplankton, phy- toplankton, zebra mussel, and bacteria harmful to public health, such as escherichia coli, vibrio cholerae and the like, included in ballast water of large-size ships, are below the standard values determined by the International Maritime Organization (IMO).
  • ecosystem-destructible organisms such as zooplankton, phy- toplankton, zebra mussel
  • bacteria harmful to public health such as escherichia coli, vibrio cholerae and the like, included in ballast water of large-size ships, are below the standard values determined by the International Maritime Organization (IMO).
  • IMO International Maritime Organization
  • This apparatus for disinfecting sea water is advantageous in that energy consumption and operation costs can be minimized because of low power consumption, in that space for installing grid electrodes is not required because several pairs of the grid electrodes are installed in the ballast water flow pipe, and in that the burden felt by the ship in terms of the energy required for operation due to the load of conventional additional devices is greatly decreased because the weight of this apparatus is reduced.
  • the elecroporation employing the grid electrodes 100 for water treatment using virtual electrodes can be widely used in the treatment of excretions in a ship or in the purification of general domestic water, waste water, sewage water and the like as well as in the treatment of ballast water. Further, according to the water treatment system of the present invention, since the grid electrodes can be provided in the ballast water flow pipe, an additional space for installing the grid electrodes is not required, and since the water treatment system can be operated only when ballast water is introduced into and discharged from the ballast water flow pipe, its operation efficiency is higher than those of conventional water treatment systems.
  • FIGS. 9 and 10 are views showing modified grid electrodes 101 and 102 according to another embodiment of the present invention, respectively.
  • the reference numerals 114a, 114b, 114c and 114d indicate metal wires constituting anodes
  • the reference numerals 124a, 124b, 124c and 124d indicate metal wires constituting cathodes.
  • FIG. 1 when metal wires 114 and 124 are respectively disposed on frames 112 and 122, a strand of each of the metal wires 114 and 124 is zigzagged on each of the frames 112 and 1222 from the beginning to the end to fabricate the anode or cathode.
  • a plurality of branch lines 114a, 114c, 124a and 124c extends from one or two or more main lines 114b, 114d, 124b and 124d to fabricate the anode or cathode. That is, in FIG. 9, in the case of the metal wire constituting the anode, a plurality of branch lines 114a extending from a main line 114b is vertically disposed in parallel, and, in the case of the metal wire constituting the cathode, a plurality of branch lines 124a extending from a main line 124b is horizontally disposed in parallel. In FIG. 10, although similar to FIG.
  • main lines 114d and 124d constitute a closed loop, and a plurality of branch lines 114c and 124c are disposed in parallel in the closed loop.
  • each of the metal wires 114 and 124 has a series-connected structure of one strand, and voltage drop occurs at the end thereof.
  • the grid electrode according to the present invention is used to treat sea water, sewage water, waste water and other water to be treated. Since the grid electrode has a simple structure and satisfies low power consumption, it can be applied to the water treatment of land or sea facilities, and, particularly, can maximize the efficiency of sea water treatment when it is installed in a ballast water flow pipe connected to a ballast tank of a ship or the like. Therefore, it is expected that the grid electrode of the present invention can be widely used in the treatment of land or sea sewage-waste water due to its simple structure, low production cost and high efficiency.

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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

La présente invention porte sur une électrode en grille pour traiter de l'eau de ballast d'un navire ou d'autres eaux usées, et, en particulier, sur une électrode en grille dans laquelle une anode et une cathode sont disposées dans une direction prédéterminée de telle sorte qu'elles sont espacées l'une de l'autre, de telle sorte qu'une électrode virtuelle est formée entre l'anode et la cathode, ce qui conduit au fait que des microbes peuvent être tués par destruction de leurs membranes cellulaires et qu'une désinfection électrochimique simultanée peut être de plus conduite, et sur un système de traitement d'eau la comprenant. La présente invention porte sur une électrode en grille pour traitement de l'eau utilisant une électrode virtuelle, comprenant : une anode comprenant un fil métallique conducteur qui s'étend verticalement selon un motif en zigzag parallèle dans un même plan; et une cathode comprenant un fil métallique conducteur qui s'étend horizontalement selon un motif en zigzag parallèle dans un même plan, l'anode et la cathode étant espacées l'une de l'autre de telle sorte que le fil métallique de l'anode et le fil métallique de la cathode se croisent l'un l'autre.
PCT/KR2008/002166 2008-04-15 2008-04-17 Grille de désinfection électrique utilisant des électrodes virtuelles pour traiter de l'eau infectée et système de traitement de l'eau l'utilisant Ceased WO2009128573A1 (fr)

Applications Claiming Priority (2)

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KR20080034777A KR101028360B1 (ko) 2008-04-15 2008-04-15 가상 전극을 이용한 밸러스트수 처리장치
KR10-2008-0034777 2008-04-15

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WO2009128573A1 true WO2009128573A1 (fr) 2009-10-22

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KR (1) KR101028360B1 (fr)
WO (1) WO2009128573A1 (fr)

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CN102583662A (zh) * 2012-02-24 2012-07-18 浙江工业大学 一种网板柱塞流电解装置及用于处理有机废水的方法
CN103925864A (zh) * 2014-03-14 2014-07-16 沪东中华造船(集团)有限公司 船舶压载管系的安装定位辅助工装及其安装定位方法
CN105246837A (zh) * 2013-03-22 2016-01-13 泰科罗斯有限公司 船舶压载水处理系统
EP2520548A4 (fr) * 2009-12-30 2016-11-30 Sergio Gabriel Capettini Procédé et appareil permettant de désinfecter l'eau afin de produire des ions hydroxyles par hydrolyse des molécules d'eau
EP3366653A1 (fr) * 2017-02-23 2018-08-29 Ibanez Botella, Juan Miguel Système de désinfection d'eau à l'aide d'une électroporation

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US20070158208A1 (en) * 2003-12-22 2007-07-12 Research Institute Of Industrial Science & Technology Apparatus and methods for treating ballast water by using electrolysis of natural seawater
KR20070093986A (ko) * 2004-11-29 2007-09-19 세번 트렌트 데 노라, 엘엘씨 밸러스트 수 처리 시스템 및 방법
US20080000775A1 (en) * 2005-01-18 2008-01-03 Childers Harold E Ii System and Process for Treating Ballast Water
KR100597254B1 (ko) * 2005-09-14 2006-07-06 한국해양연구원 선박용 밸러스트수의 전해 소독장치
KR100801185B1 (ko) * 2006-12-13 2008-02-04 주식회사 디오이에스 정밀 스위칭 정류기를 이용한 해수, 담수 및 폐수의전해처리방법 및 장치

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2520548A4 (fr) * 2009-12-30 2016-11-30 Sergio Gabriel Capettini Procédé et appareil permettant de désinfecter l'eau afin de produire des ions hydroxyles par hydrolyse des molécules d'eau
CN102583662A (zh) * 2012-02-24 2012-07-18 浙江工业大学 一种网板柱塞流电解装置及用于处理有机废水的方法
CN105246837A (zh) * 2013-03-22 2016-01-13 泰科罗斯有限公司 船舶压载水处理系统
EP2977355A4 (fr) * 2013-03-22 2016-03-16 Tech Cross Co Ltd Système de traitement d'eau de ballast
JP2016521200A (ja) * 2013-03-22 2016-07-21 テックロス カンパニー リミテッド 船舶平衡水の処理システム
CN103925864A (zh) * 2014-03-14 2014-07-16 沪东中华造船(集团)有限公司 船舶压载管系的安装定位辅助工装及其安装定位方法
EP3366653A1 (fr) * 2017-02-23 2018-08-29 Ibanez Botella, Juan Miguel Système de désinfection d'eau à l'aide d'une électroporation
WO2018154442A1 (fr) * 2017-02-23 2018-08-30 Ibanez Botella Juan Miguel Système de désinfection de l'eau par électroporation
JP2020513205A (ja) * 2017-02-23 2020-05-07 ゲオデジック イノヴェーションズ エスエル 電気穿孔法を使用する水殺菌用システム
JP7139344B2 (ja) 2017-02-23 2022-09-20 ゲオデジック イノヴェーションズ エスエル 電気穿孔法を使用する水殺菌用システム

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