KR20060113865A - Sterilizing apparatus of ballast water of a ship using double pole type electrolysis system - Google Patents

Abstract

An equipment for sterilizing ballast water of a ship using double pole type electrolysis systems is provided to improve sterilizing power of ballast water so as to meet a standard requested by IMO(international maritime organization) by generating a large amount of sodium hypochlorite within the same time during electrolysis of ballast water and effectively sterilize ballast water by controlling double pole type electrolytic sterilizing devices according to concentration of colon bacilli contained in ballast tanks. In a ship's ballast water sterilizing equipment for sterilizing ballast water flown in ballast tanks(31) formed on the bottom and lower side faces of the hull of a ship, an equipment for sterilizing ballast water of the ship using double pole type electrolysis systems comprises: double pole type electrolytic sterilizing devices(10) installed on an outer portion of the ballast tanks to generate sodium hypochlorite by electrolyze ballast water; circulation pumps(20) installed at one side of the double pole type electrolytic sterilizing devices to forcibly circulate ballast water flown in the ballast tanks into the double pole type electrolytic sterilizing devices; colon bacillus detectors(60) installed in front of the circulation pumps to detect colon bacilli contained in ballast water; and a control system for calculating an amount of colon bacilli contained in ballast water by output information of the colon bacillus detectors and controlling the double pole type electrolytic sterilizing devices and the colon bacillus detectors according to the calculation results.

Description

Sterilizing apparatus of ballast water of a ship using double pole type electrolysis system

1 is an installation state of the ship ballast water sterilization apparatus using a bipolar electrolysis system according to the present invention.

Figure 2 is a combined perspective view of a bipolar electrolytic sterilization apparatus applied to the present invention.

Figure 3 is an exploded perspective view of a bipolar electrolytic sterilization apparatus applied to the present invention.

4 is an enlarged view of a portion “A” of FIG. 3.

Figure 5 is a cross-sectional plan view of a bipolar electrolytic sterilization apparatus applied to the present invention.

Figure 6 is a front sectional view of a bipolar electrolytic sterilization apparatus applied to the present invention.

7 is a cross-sectional view taken along the line B-B in FIG.

8 is a block diagram of an E. coli detection device applied to the ballast water sterilization apparatus of a ship using a bipolar electrolysis system according to the present invention.

9 is a block diagram of a control system in a ballast water sterilization apparatus of a ship using a bipolar electrolysis system according to the present invention.

<Explanation of symbols for main parts of drawing>

1: electrolytic cell 2a, 2b: cover

3a, 3b: connector 4a, 4b: bolt

5a: recess 5b: incision

5c: Fastening

6a-6c: 1st-3rd insoluble titanium electrode plates

7a, 7b; First and second stainless steel electrode plates

8a, 8b, 8c, 9a, 9b: power supply 10: bipolar electrolytic sterilizer

11a, 11b: packing 13a, 13b: electrode

14a-14c, 15a, 15b: Through hole 16a, 16b: Packing

20: circulation pump 30: ship hull

31: ballast tank 50: control system

51: control panel 53: MPU

54: DC converter 55: the first switching unit

60: coliform detection device 61: thermostat

62: culture tank 63: temperature sensor

64 pressure sensor 65 inflow pump

66: discharge pump 67: medium

68: heater 69: second switching unit

80: communication port 90: ship control system

The present invention relates to an apparatus for sterilizing ballast water of a ship, and more particularly, by installing an electrolytic sterilizer composed of a bipolar electrolysis system on an outer wall of a ballast tank formed in each compartment on the bottom and side of a ship hull. A bipolar electrolysis system that increases the production of sodium hypochlorite during electrolysis to increase sterilization power, while controlling the bipolar electrolytic sterilizer according to the concentration of E. coli present in the ballast tank to effectively sterilize the ballast water. It relates to a ship ballast water sterilizer used.

In 1992, the United Nations Conference on Environment and Development asked the International Maritime Organization to systematically regulate the release of ballast water in order to prevent the spread of non-indigenous organisms. In order to prevent this problem, two methods of exchanging ballast water in a certain sea area before the ship enters the harbor, and two methods of disinfecting or disinfecting the ballast water loaded by physical and chemical methods were proposed.

Among the above two methods, the method of physically, chemically sterilizing or disinfecting the ballast water has been intensively examined for the method of exchanging the ballast water in the ocean due to the low processing efficiency because the amount of ballast water loaded on the ship is large. Since ballast water exchange work in the ocean requires a lot of time and effort, it may pose a danger to the safety of ships, and it is impossible to work during close voyage, so the development of a practical ballast water treatment device is required and proposed.

The conventional ballast water treatment apparatus as described above is provided with a shock-hydraulic device in Japanese Patent Laid-Open No. 2005-342626 (published date: December 15, 2005) (name of the invention: a ballast water treatment method and apparatus, a vessel equipped with the apparatus). When the seawater flows into the ballast tank, shock water pressure is applied to the water of the membrane filter device that filters sea creatures, and the impact water pressure is used to exert the killing effect of aquatic organisms. It has been proposed that the device be sterilized with an ultraviolet irradiation device or an electrolytic device.

In addition, the Republic of Korea Patent Publication No. 2004-0066971 (published date: 2004.07.30) (name of the invention: ship ballast water treatment device) in the ballast tank is rotated inside the filtration device to filter the sea creatures when seawater is introduced into the ballast tank It has been proposed to install a filtration filter, to continuously remove foreign substances attached to the rotary filtration filter with a cleaning brush, and to install an ultraviolet-electrolytic sterilization treatment device at the rear end of the filtration device.

The conventional vessel ballast water treatment apparatus as described above has insoluble titanium electrodes at the positive electrode (+), and stainless steel electrodes at the negative electrode (-) to produce sodium hypochlorite due to electrolysis at the positive electrode, and thus included in the ballast water. Electrolytic sterilization device for sterilizing bacteria is included.

As described above, when electrolyzing seawater using an electrolytic sterilizer, hypochlorite at the anode during electrolysis of seawater as the main reaction as in reaction (1) and the side reaction as in reaction (2) proceed to the anode and cathode. Or sodium hypochlorite is produced, the sterilization is made by such hypochlorous acid or sodium hypochlorite.

....반응식(1)

.... Scheme (1)

....반응식(2)

.... Reaction Scheme (2)

As the conventional ballast water sterilizer for ships, hypochlorous acid or sodium hypochlorite generated when electrolyzing seawater using an electrolytic device is generated, and the sterilization effect can be expected to some extent, but as described above, the ballast water loaded on the vessel Since the amount is large, the sterilization efficiency is insignificant, and thus there are many problems that cannot be put to practical use because they do not meet the standards required by the International Maritime Organization.

The present invention is installed within the same time in the electrolysis of ballast water by installing an electrolytic sterilizer consisting of a bipolar electrolysis system on the outer wall surface of the ballast tank formed by compartments on the bottom and side of the ship hull to solve the above problems The technical task is to increase the sterilizing power of ballast water by producing a large amount of sodium hypochlorite to meet the standards required by the International Maritime Organization.

The present invention also provides a bipolar type according to the concentration of E. coli present in the ballast tank by installing an E. coli detection device capable of measuring the amount of E. coli present in the ballast water in front of the bipolar electrolytic sterilizer installed on the outer wall of the ballast tank. It is a technical problem to control the electrolytic sterilizer so that the ballast water can be sterilized effectively.

Hereinafter, the vessel ballast water sterilization apparatus using the bipolar electrolysis system according to the present invention will be described in detail with reference to FIGS. 1 to 9.

First, Figure 1 is a diagram showing the installation state of the ship ballast water sterilization apparatus using a bipolar electrolysis system according to the present invention is composed of a bipolar electrolysis system is a bipolar electrolytic sterilization to generate hypochlorous acid or sodium hypochlorite by electrolyzing seawater Apparatus 10 is provided, and a circulation pump 20 for circulating the ballast water flowing into the ballast tank 31 to the bipolar electrolytic sterilizer 10 is provided at one side of the bipolar electrolytic sterilizer 10. Is installed.

The other side of the circulation pump 20 and the other side of the bipolar electrolytic sterilization device 10 is connected to the ballast tank 31 formed on the bottom surface and the lower side of the ship hull 30, the circulation pump 20 ) E. coli detection device 60 for detecting E. coli present in the ballast water is installed in the front end.

2 and 3 are combined perspective and exploded perspective views of the bipolar electrolytic sterilizer 10 in the ship ballast water sterilization apparatus using a bipolar electrolysis system according to the present invention, Figure 4 is a "A" part of FIG. 5 and 6 are enlarged cross-sectional and front cross-sectional views of the bipolar electrolytic sterilizer 10 according to the present invention, and FIG. 7 is a cross-sectional view taken along line BB of FIG.

That is, the bipolar electrolytic sterilizer 10 is a resin such as glass fiber reinforced plastic (FRP), polyurethane (PU), polyethylene (PE), polyvinyl chloride (PVC), etc., and is an insulator and has appropriate strength, durability, and thickness. A rectangular electrolytic cell 1 having is provided, and fastening holes 5c are formed at regular intervals on the front circumference of both end surfaces of the electrolytic cell 1, and the upper and lower surfaces of the electrolytic cell 1 A plurality of grooves 5a are formed at regular intervals, and a cutout portion 5b is formed at one side of the groove portion 5a formed on the upper surface of the electrolytic cell 1, and the cutout portion 5b has an 'I' shape. Packing 11a, 11b is installed inflow.

In addition, first to third insoluble titanium electrode plates 6a, 6b, 6c, and first and second plates having a flat plate flowing in the plurality of recesses 5a formed on the upper and lower surfaces of the electrolytic cell 1. Stainless steel electrode plates 7a and 7b are provided, and one side of the first to third insoluble titanium electrode plates 6a, 6b and 6c is provided on the cutout portion 5b formed on the upper side of the electrolytic cell 1. First power supplies 8a, 8b and 8c, which are introduced and exposed to the outside and are formed with first through holes 14a, 14b and 14c, protrude and form the first power supplies 8a and 8b ( The first electrode rod 13a to which the DC power of the anode (+) is supplied flows into the first through holes 14a, 14b, and 14c formed in 8c.

In addition, one side of the first and second stainless electrode plates 7a and 7b flows into the cutout 5b formed on the upper surface of the electrolytic cell 1 and is exposed to the outside, and is exposed to the outside through the second through holes 15a and 15b. The formed second power supply parts 9a and 9b protrude from each other, and the second through holes 15a and 15b formed in the second power supply parts 9a and 9b are supplied with a DC power supply of a negative electrode (-). The second electrode bar 13b flows in.

The first to third insoluble titanium electrode plates 6a, 6b, and 6c and the first and second stainless electrode plates 7a and 7b are alternately installed through the recesses 5a to be bipolar electric. It constitutes a decomposition system.

Hopper-shaped covers 2a and 2b at both ends of the electrolytic cell 1 are provided with connecting pipes 3a and 3b with packings 16a and 16b for preventing the outflow of seawater. It is screwed as a bolt (4a) (4b) through the provisional fastening hole (5c), the other side of the connecting pipe (3a) is connected to the ballast tank 31 through the circulation pump 20, the other connecting pipe (3b) ) Is configured to be directly connected to the ballast tank (31).

8 is a configuration diagram of the E. coli detection device 60 applied to the ballast water sterilization apparatus of the ship using the bipolar electrolysis system according to the present invention, the method for measuring the amount of E. coli in the ballast water is culturing It is made by measuring the minute increase rate of pressure generated by the generated CO₂ gas, it is possible to measure the amount of E. coli, such as using a pressure and temperature sensor.

That is, the thermostat 61 maintains a closed space and maintains a constant temperature by the heater 68, and is installed in the thermostat 61 and a medium 67 is installed in the lower portion of the ballast water. A culture tank 62 for culturing E. coli, and a temperature sensor 63 installed inside the culture tank 62 to sense temperature and pressure inside the culture tank 62 and transmit the information to the control system 50. And inlet / outlet pumps 65 and 66 that are installed at both sides of the pressure sensor 64 and the culture tank 62 to supply and discharge the ballast water.

9 is a block diagram of a control system 50 in a ballast water sterilization apparatus of a ship using a bipolar electrolysis system according to the present invention, in which an AC power source is converted into a DC power source and a first electrode rod 13a ( 13b) through the first to third insoluble titanium electrode plates 6a, 6b, and 6c to the positive (+) DC power supply, and to the first and second stainless electrode plates 7a and 7b to the cathode ( Read the information of the DC converter 54, which supplies the DC power of-) and the pressure sensor 64 constituting the E. coli detection device 60, and analyzes the amount of E. coli present in the ballast water, There is provided a microprocessor unit (MPU) 53 for determining the driving of the bipolar electrolytic sterilizer 10 and the circulation pump 20.

The temperature sensor 63 is installed in the culture tank 62 constituting the E. coli detection device 60 at the input end of the MPU 53 and senses the temperature of the culture tank 62 and outputs an electrical signal proportional thereto. In addition, the pressure sensor 64 is installed inside the culture vessel 62 to sense the pressure of the culture vessel 62 and outputs an electrical signal proportional thereto, and sets an automatic / manual operation mode of the system. The operation unit 51 for setting the connection is connected.

At the output end of the MPU 53, the inlet / outlet pumps 65 and 66 for introducing and discharging the ballast water into the culture tank 62 constituting the E. coli detection device 60, and the inside of the culture tank 62 The second switching unit 69 for supplying power to the heater 68 for maintaining the temperature of the thermostat 61 by the output information of the installed temperature sensor 63 and the output of the DC converter 54 Power is supplied to the first to third insoluble titanium electrode plates 6a, 6b and 6c and the first and second stainless electrode plates 7a and 7b through the first and second electrode rods 13a and 13b. A first switching unit 55 for supplying power and a circulation pump 20 for circulating ballast water are connected to the bipolar electrolytic sterilizer 10.

The communication port 80 is connected to one end of the MPU 53 to communicate in both directions with the ship control system 90 so that the ship control system 90 can collectively control the ship.

Referring to the assembly and installation process of the ship ballast water sterilization apparatus using a bipolar electrolysis system according to the present invention made as described above are as follows.

First, the assembling process of the bipolar electrolytic sterilizer 10 will be described with reference to the first to third insoluble titanium electrodes in the recess 5a formed at the outermost and upper and lower surfaces of the electrolytic cell 1 as shown in FIGS. 2 to 7. When the plates 6a, 6b and 6c are introduced, the first power supply units 8a, 8b and 8c protruding from the first to third insoluble titanium electrode plates 6a, 6b and 6c are formed. It is exposed to the outside through the cutout 5b and aligned in a line.

In addition, when the first and second insoluble titanium electrode plates 6a, 6b, and 6c do not flow into the remaining recesses 5a, the first and second stainless electrode plates 7a and 7b are introduced. The second power supply parts 9a and 9b protruding from the first and second stainless electrode plates 7a and 7b are aligned to the rear ends of the first power supply parts 8a, 8b and 8c. When installed together, the first to third insoluble titanium electrode plates 6a, 6b and 6c and the first and second stainless electrode plates 7a and 7b are alternately installed.

At this time, the gap between the first to third insoluble titanium electrode plates 6a, 6b and 6c and the first and second stainless electrode plates 7a and 7b and the electrolytic cell 1 is sealed by applying silicon. When the ballast water flows into the bipolar electrolytic sterilizer 10 to prevent leakage.

Then, the sealing packings 11a and 11b are installed in the cutout 5b formed in the electrolytic cell 1, while the packing 16a for preventing the outflow of sea water at both ends of the electrolytic cell 1 ( Hopper-shaped covers 2a and 2b provided with connecting pipes 3a and 3b with 16b between them are screwed as bolts 4a and 4b through fastening holes 5c.

Thereafter, first through holes 14a, 14b, and 14c formed in the first power supply units 8a, 8b, and 8c of the first to third insoluble titanium electrode plates 6a, 6b, and 6c. The first electrode rod 13a is introduced into the first electrode rod 13a, and the second electrode rod 13b is introduced into the second through holes 15a and 15b formed in the first and second stainless electrode plates 7a and 7b. By assembling each other, the assembly of the bipolar electrolytic sterilizer 10 is completed.

Referring to the installation process of the ballast water sterilization apparatus of the ship using the bipolar electrolysis system according to the present invention.

First, as shown in FIGS. 1 and 8, the other side of the connecting pipe 3a is connected to and installed through the ballast tank 31 through the circulation pump 20, and the other connecting pipe 3b is the ballast tank 31. Directly installed so as to penetrate through, and install the E. coli detection device 60 in parallel on the other side of the circulation pump (20).

In addition, the electrical connection of the bipolar electrolytic sterilizer 10, the circulation pump 20 and the E. coli detection device 60 is the first to third insoluble titanium electrode plates (6a) (6b) (6c) as shown in FIG. ) Is connected to the positive electrode (+) of the DC power output from the DC converter 54, and the first and second stainless electrode plates 7a and 7b are electrically connected to the first and second electrode bars 13a. The second electrode rods 13a and 13b which are electrically connected to each other are respectively connected to the cathode (+) of the DC power source.

Referring to the operation of the vessel ballast water sterilization apparatus using a bipolar electrolysis system according to the present invention made as described above are as follows.

First, when the operator operates the operation unit 51 to supply power to the system, the MPU 53 initializes the system, and then operates the circulation pump 20 to bipolar type the ballast water introduced into the ballast tank 31. Forced circulation by passing through the electrolytic sterilizer 10, while driving the inflow pump 65 of the E. coli detection device 60 for a predetermined time to introduce an appropriate amount of ballast water into the culture tank (62).

At the same time, the MPU 53 controls the first switching unit 55 to apply the DC power of the positive electrode (+) via the DC converter 54 to the first electrode 13a, and the DC of the negative electrode (-). The power is applied to the second electrode 13b, while the second switching unit 69 is controlled to supply power to the heater 68 to maintain the culture tank 62 at 35 ° C by indirect heat.

When the ballast water stored in the ballast tank 31 flows into the bipolar electrolytic sterilizer 10 by the driving of the circulation pump 20, a first DC power of the positive electrode is applied through the first electrode 13a. To first and second stainless electrode plates 7a and 7b to which a DC power source of the negative electrode is applied through the third insoluble titanium electrode plates 6a, 6b and 6c and the second electrode bar 13b. Electrolysis of ballast water occurs between each electrode plate as it passes through, thereby producing hypochlorous acid or sodium hypochlorite, as shown in the above Reactions 1 and 2, and these disinfectants such as hypochlorous acid or sodium hypochlorite. As it is introduced into the ballast tank 31 again, the ballast water introduced into the ballast tank 31 is sterilized.

At this time, as the bipolar electrolyzer is constituted by the plurality of first to third insoluble titanium electrode plates 6a, 6b and 6c and the first and second stainless electrode plates 7a and 7b, a large amount of charges are simultaneously formed. By producing chloric acid or sodium hypochlorite, the sterilization power becomes very high, which can meet the standards required by the International Maritime Organization.

On the other hand, in the MPU 53, the E. coli detection device 60 is periodically driven to turn on the bipolar electrolytic sterilization device 10 according to the amount of E. coli detected by the E. coli detection device 60. Turned off.

In other words, the microorganism belonging to the E. coli group refers to all aerobic and breathable Gram-negative spore-forming bacteria that ferment lactose within 48 hours at 35 ° C. to produce gas, which is the dominant species among the microorganisms living in the human intestine. It is found in human feces, and for this reason the discovery of coliforms in natural waters is interpreted as a sign of fecal contamination of water.

In addition, Escherichia coli is used as an indicator microorganism because its distribution pattern changes according to environmental changes, and Escherichia coli multiplies in a nutrient-rich medium such as lactose in 20 to 30 minutes. Because of its fast characteristics, it is possible to measure by selective culture.

Therefore, when the temperature is kept constant at 35 ° C. by the thermostat 61 while the ballast water is introduced into the sealed culture tank 62 constituting the E. coli detection device 60, the coliform medium present in the ballast water is medium ( 67), CO₂ is generated by the fermentation of the cultured E. coli, and the pressure in the culture tank 62 is increased, and when the rate of change of this pressure is measured per hour, the amount of E. coli is measured according to the quantified reference table. Will be.

Such an E. coli detection device (60) is published in the article 96-5-3-07 of the 5th issue of the Journal of the Society of Sensors, May 1996.

That is, the MPU 53 reads the information of the pressure sensor 64 at regular intervals and measures the rate of change of the pressure in the culture vessel 62 per hour, and compares the measured hourly rate of change of pressure with the quantified data stored therein. The amount of E. coli is analyzed and the amount of E. coli is measured. If the amount of E. coli is above a certain amount, the electrolysis of the ballast water is continued to maintain sodium hypochlorite. However, if the amount of E. coli is less than a certain amount, the first switching unit 55 is Sterilization is stopped by disabling DC power applied to the first to third insoluble titanium electrode plates 6a, 6b and 6c and the first and second stainless electrode plates 7a and 7b by turning off. The pump 66 is driven to discharge the wastewater introduced into the culture tank 62.

Therefore, in the present invention, the driving time of the bipolar electrolytic sterilizer 10 is determined according to the amount of E. coli present in the ballast water, and bidirectionally between the control system 50 and the ship control system 90 through the communication port 80. By enabling communication, the vessel control system 90 can collectively control the bipolar electrolytic sterilizer 10 installed in the plurality of ballast tanks 31.

As described above, the present invention installs an electrolytic sterilizer consisting of a bipolar electrolysis system on the outer wall surface of the ballast tank formed by sections on the bottom and side of the ship hull in a large amount within the same time during electrolysis of the ballast water. The production of sodium hypochlorite increases the sterilizing power of the ballast water, which not only has the effect of meeting the standards required by the International Maritime Organization, but also measures the amount of E. coli present in the ballast water at the front of the bipolar electrolytic sterilizer. By installing the E. coli detection device capable of controlling the bipolar electrolytic sterilizer according to the concentration of E. coli present in the ballast tank can be effectively sterilized ballast water.

Claims (4)

In the ship ballast water sterilization apparatus for sterilizing the ballast water introduced into the ballast tank 31 formed on the bottom surface and the lower side of the ship hull 30, A bipolar electrolytic sterilizer 10 installed outside the ballast tank 31 to electrolyze ballast water to generate sodium hypochlorite; A circulation pump 20 installed on one side of the bipolar electrolytic sterilizer 10 for forcibly circulating the ballast water introduced into the ballast tank 31 to the bipolar electrolytic sterilizer 10; E. coli detection device 60 for detecting the E. coli present in the ballast water is installed in front of the circulation pump 20, Control system for calculating the amount of E. coli present in the ballast water based on the output information of the E. coli detection device 60, and controls the bipolar electrolytic sterilizer 10 and E. coli detection device 60 according to the result of the calculation Ship ballast water sterilization apparatus using a bipolar electrolysis system, characterized in that consisting of (50). The method of claim 1, wherein the bipolar electrolytic sterilizer 10, Fastening holes 5c are formed at regular intervals on the front circumference of the open end surface on both sides, and grooves 5a are formed at regular intervals on the inside of the upper and lower surfaces, and an incision 5b is formed on one side of the groove 5a formed on the upper surface. And a rectangular electrolytic cell 1 in which The first to the first in the form of a flat plate which is introduced into the groove (5a) formed in the electrolytic cell 1, the first power supply (8a ~ 8c) is formed integrally with the first through hole (14a ~ 14c) formed on one side of the upper end 3 insoluble titanium electrode plates 6a-6c, A first flat plate having a second power supply unit (9a) (9b) is introduced into the groove (5a) formed in the electrolytic cell 1, the second power supply unit (9a) (9b) is formed on one side of the upper end portion Second stainless electrode plates 7a and 7b, The first and second through holes 14a to 14c, 15a and 15b are introduced into the first to third insoluble titanium electrode plates 6a to 6c to supply positive (+) power to the first and second stainless steels. First and second electrode rods 13a and 13b for supplying negative (−) power to the electrode plates 7a and 7b, Hopper-shaped covers 2a and 2b that are screwed together as bolts 4a and 4b through fastening holes 5c formed in the electrolytic cell 1 and are provided with connecting pipes 3a and 3b at their ends. Wow, Packings 16a and 16b installed between both ends of the electrolytic cell 1 and the covers 2a and 2b to prevent leakage of ballast water; It is made of 'I' shaped packing (11a) (11b) flowing into the cutout (5b) to prevent the leakage of ballast water, The first to third insoluble titanium electrode plates 6a, 6b, 6c and the first and second stainless electrode plates 7a, 7b are alternately installed. Marine ballast water sterilizer. The method according to claim 1 or 2, wherein the control system 50, A DC converter 54 for converting AC power into DC power and supplying DC power to the first and second electrode bars 13a and 13b; MPU 53 for reading the information of the pressure sensor 64 to calculate the amount of E. coli present in the ballast water, and controls the bipolar electrolytic sterilizer 10 and the circulation pump 20 according to the result of the calculation; , An operation unit 51 connected to an input of the MPU 53 to set automatic and manual operation modes of the system; A second switching unit 69 connected to an output terminal of the MPU 53 to supply power to the heater 68 by output information of the temperature sensor 63; And a first switching unit 55 connected to an output terminal of the MPU 53 to apply the output power of the DC converter 54 to the first and second electrode bars 13a and 13b. Vessel ballast water sterilizer using mechanical electrolysis system. The vessel ballast water sterilization apparatus using a bipolar electrolysis system according to claim 3, wherein the communication port 80 is connected to one end of the MPU 53 to communicate with the ship control system 90 in both directions. .

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