KR20120119698A - Ballast water treatment system using electrolysis - Google Patents

Abstract

PURPOSE: An electrolysis ballast water treatment system is provided to reduce the power consumption of power source needed for driving a ballast pump. CONSTITUTION: An electrolysis ballast water treatment system includes a cooling seawater feeding pipe(110), a heating seawater feeding pipe(113), a ballast water introducing and discharging pipe(120), a mixed water temperature adjusting unit(140), and an electrolyzing unit(150). The cooling seawater feeding pipe feeds cooling seawater from the sea-chest of a vessel. The heating seawater feeding pipe is extended from the cooling seawater feeding pipe and feeds heated seawater. The ballast water introducing and discharging pipe is arranged to be combined with the heating seawater feeding pipe. The ballast water introducing and discharging pipe discharges either ballast water or seawater. The mixed water temperature adjusting unit is arranged on a mixed water feeding pipe at which the heating seawater feeding pipe and the ballast water introducing and discharging pipe are combined. The mixed water temperature adjusting unit adjusts the temperature of mixed water of the heated seawater and the ballast water. The electrolyzing unit electrolyzes a part of the mixed water.

Description

Ballast water treatment system using electrolysis

The present invention relates to an electrolytic ballast water treatment system.

In the case of large ships, ballast tanks are provided on the lower part of the ship to ensure the stability and balance of the ship. In such ballast tanks, the ballast water taken from the seawater is inflowed or outflowed according to the weight change of the shipment to maintain the balance of the ship.

The seawater introduced in this process includes fine marine life.If the seawater in the country or region to which the vessel is docked moves to another country or region to release seawater, the marine life mixed in the seawater inflow process It can be spread to areas. The movement of marine life is a phenomenon that rarely occurs in the natural world, causing serious marine ecosystem disturbances such as fluctuation of representative species and red tide, which is a problem in the marine environment around the world.

In order to cope with these problems, research is being conducted for the treatment of ballast water that kills marine organisms contained in the ballast water. Currently, the ballast water treatment method is electrolysis disinfection, ultraviolet disinfection, ozone treatment, cavitation method, and co-catalyst. Disinfection methods are used alone or in combination.

Among these, electrolytic disinfection generates sodium hypochlorite (NaOCl) through salt (NaCl) contained in seawater by electrolysis of the electrolysis device while inflowing seawater into an electrolysis device equipped with an electrode for electrolysis. Then, the ballast water is treated using the produced sodium hypochlorite.

The electrolysis efficiency in such an electrolysis method varies depending on the incoming seawater temperature and salt concentration, which is known to have high electrolysis efficiency at a temperature of 15 ° C. or higher.

If seawater lower than 15 ° C is used, an additional electrolysis device must be constructed, which may increase the cost and may not be applicable in structures that are limited by the size of the installation site, such as ships.

In addition, since many sea lanes have a seawater temperature of less than 15 ° C in sea lanes and ports where ships operate, electrolyzed ships are limited in their operational ports, causing loss of value and loss of opportunity for management of shipping ships. May result.

Therefore, the technical problem to be achieved by the present invention is to provide an electrolytic ballast water treatment system that can treat the ballast water stably in the ocean or port of low temperature seawater by maintaining a constant temperature of the seawater flowing into the electrolysis device. will be.

According to an aspect of the invention, the cooling sea water supply pipe for supplying cooling sea water from the sea-chest of the ship; A heated seawater supply pipe extending from the cooling seawater supply pipe and supplying seawater heated through heat exchange with cooling water for cooling the heat generator in the ship; A ballast water inflow and outflow pipe disposed to join the heated seawater supply pipe and discharge at least one of ballast water and seawater from at least one of a ballast tank of the ship and a sea-chest of the ship; A mixed water temperature adjusting device disposed on the mixed water supply pipe that joins the heated seawater supply pipe and the ballast water inflow and outflow pipe, and adjusts a temperature of the mixed water in which the heated seawater and the ballast water are mixed; And an electrolysis device for electrolyzing at least a portion of the mixed water that has passed through the mixed water temperature control device.

The mixed water temperature control device may adjust the temperature of the mixed water by adjusting the mixed amount of the heated seawater and the ballast water.

The mixed water temperature control device, the heating sea water supply valve provided on the heating sea water supply pipe; A ballast water inlet and outlet valve provided on the ballast water inlet and outlet pipe; A temperature sensor for measuring the temperature of the mixed water; And it may include a control unit for controlling the opening amount of the heated seawater supply valve and the ballast water inlet valve according to the temperature information of the mixed water received from the temperature sensor.

The apparatus may further include a fluid mixer installed upstream of the temperature sensor to mix the heated seawater and the ballast water.

The filter may further include a filter disposed on the mixed water supply pipe and installed upstream of the electrolysis device to filter the mixed water.

The electrolysis device may be installed on the mixed water supply pipe.

Branched from the mixed water supply pipe so as to bypass the electrolysis device, it may further include a bypass pipe for adjusting the supply amount of the mixed water supplied to the electrolysis device.

The electrolysis device may be installed on a branch pipe branched from the mixed water supply pipe for supplying the mixed water to the ballast tank or discharged to the outside of the vessel.

It may further include a booster pump installed on the branch pipe to supply a portion of the mixed water flowing through the mixed water supply pipe to the electrolysis device.

The ballast water inflow and outflow pipe is connected to the ballast of the ship ballast water supply pipe for supplying seawater; And it may include a ballast water discharge pipe for discharging the ballast water from the ballast tank.

According to another aspect of the present invention, an electrolysis seawater supply pipe for supplying seawater for electrolysis from the sea-chest of the ship; A heated seawater supply pipe branching from the electrolysis seawater supply pipe and exchanging heat with the cooling water of the heating device in the ship, and then supplying heated seawater rejoining the electrolysis seawater; The mixed water temperature arranged on the mixed water supply pipe joining the heated seawater supply pipe and the electrolysis seawater supply pipe, and constantly controlling the temperature of the mixed water in which the heated seawater and the electrolysis seawater are mixed. Regulator; And an electrolysis device installed on the mixed water supply pipe to electrolyze the mixed water passing through the mixed water temperature controller to generate electrolytic water. Including a ballast water inflow and outflow pipe for flowing into the ballast tank using the electrolyzed water generated from the electrolysis device or to treat any one or more of the ballast water and seawater from any one or more of the ballast tank and the sea-chest of the vessel Electrolytic ballast water treatment systems may be provided.

The electrolysis apparatus may be installed in a safety zone of a ship in which flammable gas does not exist, and the ballast water inflow and outflow pipe may be installed in a danger zone of a ship in which a risk of flammable gas leakage exists.

The mixed water temperature control device, the heating sea water supply valve provided on the heating sea water supply pipe; An electrolysis sea water supply valve provided on the electrolysis sea water supply pipe; A temperature sensor for measuring the temperature of the mixed water; And it may include a control unit for controlling the opening amount of the heated seawater supply valve and the electrolysis seawater supply valve in accordance with the temperature information of the mixed water received from the temperature sensor.

The ballast water inflow and outflow pipe, the ballast water supply pipe is connected to the body of the ship for supplying seawater to the ballast tank; And it may include a ballast water discharge pipe for discharging the ballast water from the ballast tank.

Disposed on the ballast water inflow and outflow pipe, and installed at an upstream side of the confluence point at which any one or more of the ballast water and the seawater joined from the electrolyzed water generated from the electrolysis device is disposed at least one of the ballast water and the seawater; The filter may further include a filter.

Embodiments of the present invention, by maintaining a constant temperature of the seawater flowing into the electrolysis device to increase the electrolysis efficiency of the seawater can be treated the ballast water in the sea or port of low-temperature seawater stably.

1 is a system diagram of an electrolytic ballast water treatment system according to a first embodiment of the present invention.
2 is a system diagram of an electrolytic ballast water treatment system according to a second embodiment of the present invention.
3 is a system diagram of an electrolytic ballast water treatment system according to a third embodiment of the present invention.

In order to fully understand the present invention, operational advantages of the present invention, and objects achieved by the practice of the present invention, reference should be made to the accompanying drawings and the accompanying drawings which illustrate preferred embodiments of the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. Like reference symbols in the drawings denote like elements.

1 is a system diagram of an electrolytic ballast water treatment system according to a first embodiment of the present invention.

Referring to this, the electrolytic ballast water treatment system 100 of the present embodiment, the heating seawater supply pipe for supplying the seawater heated by heat exchange with the cooling water 21 for cooling the heat generator (not shown) in the vessel ( 113), the ballast water inflow and outflow pipe 120 connected to the ballast tank 30 of the ship, the mixed water temperature control unit 140 for constantly adjusting the temperature of the mixed water mixed with the heated seawater and ballast water, It includes an electrolysis device 150 for electrolyzing the mixed water passed through the mixed water temperature control device 140.

The heated seawater supply pipe 113 is connected to the cooling seawater supply pipe 110 connected to the sea-chest 10 provided at the bottom of the ship. The cooling sea water supply pipe 110 supplies the cooling sea water for cooling the cooling water 21 to the cooling device 20 using the sea water pump 111.

Here, the cooling device 20 is a device for cooling a heat generating device that generates heat when operating in a ship such as an engine, a generator, an electric motor, and the cooling water 21 for cooling the heat generating device passes through the cooling device 20. In addition, a method of cooling the cooling water 21 through heat exchange with cooling seawater is used.

The cooling seawater heated by the heat exchange with the cooling water 21 in the cooling device 20 is transferred along the heated seawater supply pipe 113 and joins with the ballast water transferred through the ballast water inflow and outflow pipe 120.

The ballast water inflow and outflow pipe 120 is connected to the ballast water supply pipe 121 connected to the sea-chest 10 provided on the bottom, and the ballast water discharge pipe 122 for discharging the ballast water from the ballast tank 30. .

The ballast water supply pipe 121 and the ballast water discharge pipe 122 are provided with an open / close valve, respectively, and are selectively opened and closed. For example, when the ballast tank 30 is replenished with ballast water, the ballast pump 123 is operated in a state in which the on / off valve of the ballast water discharge pipe 122 is closed and the on / off valve of the ballast water supply pipe 121 is opened. .

Meanwhile, the ballast water discharged from the ballast tank 30 or introduced into the ballast tank 30 through the ballast water inflow pipe 120 is joined in the heated cooling seawater and the mixed water supply pipe 130 to form mixed water. do.

Here, if the mixed water is filled in the ballast tank 30, it is possible to cover a portion of the seawater required for the ballast using the heated cooling seawater. Therefore, the seawater capacity to be handled by the ballast pump 123 is reduced as compared with the conventional discharge of cooling seawater heated outside the ship, thereby reducing the power consumption of the power source required to drive the ballast pump 123.

At the point where the ballast water inflow pipe 120 and the heated sea water supply pipe 113 join, the mixed water temperature control device 140 is installed. The mixed water temperature adjusting device 140 is a device for maintaining a constant temperature of the mixed water. The heated sea water supply valve 141 provided on the heated sea water supply pipe 113 and the ballast water inflow pipe 120 are provided. It includes a ballast water inlet and outlet valve 142, a temperature sensor 143 for measuring the temperature of the mixed water, and a control unit 144.

 The controller 144 compares the temperature of the mixed water received from the temperature sensor 143 with the preset mixed water temperature, and the heated seawater supply valve 141 and the ballast water so that the temperature of the mixed water reaches a preset temperature. The opening amount of the outlet valve 142 is adjusted. The temperature of the mixed water set by the controller 144 may be determined in consideration of the temperatures of the heated cooling seawater and the ballast water supplied to the mixed water temperature controller 140 in a temperature range of 15 ° C. or more as described above. . Although not shown in the drawings, a fluid mixer for mixing cooling seawater and ballast water may be additionally installed on the upstream side of the temperature sensor 143 for accurate temperature measurement of the mixed water.

The reason why the temperature of the mixed water is raised above a predetermined temperature is to maintain the efficiency of electrolysis at an appropriate level as described above. Therefore, when sailing in an area where the temperature of the sea water is high, there is no need to increase the temperature of the seawater flowing into the electrolysis device 150. In this case, the heated seawater supply valve 141 flowing into the mixed water supply pipe 130 is closed, and the heated cooling seawater is discharged to the outside of the ship as in the prior art through the cooling seawater discharge pipe 112. At this time, only the ballast water flowing through the ballast outflow pipe 120 is introduced into the electrolysis device 150.

The mixed water heated up to a predetermined temperature through the mixed water temperature controller 140 is introduced into the electrolysis device 150 installed on the mixed water supply pipe 130.

When the mixed water consisting of sea water is electrolyzed through the electrolysis device 150, the sodium chloride component contained in the mixed water is converted into sodium hypochlorite (NaOCl) or hypochlorous acid (HClO). The marine life it contains is removed.

The electrolysis device 150 of this embodiment is installed on the mixed water supply pipe 130 to continuously generate the electrolytic water containing sodium hypochlorite, A direct method of treating ballast water is used. However, even in the case of the direct method, when the degree of contamination of the mixed water is low or it is necessary to adjust the concentration of the electrolyzed water included in the mixed water so that it does not have to pass through the electrolysis device 150, the electrolysis device 150 It is necessary to control the amount of mixed water introduced into the furnace.

Usually, the higher the concentration of the electrolyzed water contained in the seawater increases the effect of killing marine life, but if the concentration of the electrolyzed water is too high, corrosion may occur in the piping system. To this end, in the present embodiment, a bypass pipe 151 disposed to bypass the electrolysis device 150 is installed. The bypass pipe 151 is installed to branch from the mixed water supply pipe 130 on the upstream side of the electrolysis device 150 and join again on the downstream side of the electrolysis device 150.

The amount of the mixed water transferred to the bypass pipe 151 is mixed with the pollution degree sensor 131, the three-way valve 133 provided at the point where the bypass pipe 151 branches from the mixed water supply pipe 130, and the mixing It is adjusted by the water supply amount control unit 132.

The pollution sensor 131 may be a method of irradiating a predetermined amount of light into the mixed water in the light emitting unit (not shown) and measuring the intensity of light detected by the light receiving unit (not shown).

The mixed water supply amount control unit 132 adjusts the amount of mixed water flowing into the electrolysis device 150 by adjusting the opening and closing amount of the three-way valve 133 according to the pollution degree measured from the pollution degree sensor 131. When the pollution degree of the mixed water is lower than the discharge standard of the ballast water, all the mixed water is transferred through the bypass pipe 151.

The mixed water passing through the electrolysis device 150 is filled in the ballast tank 30 or discharged to the outside of the ship through the ballast water discharge pipe 131. The ballast tank 30 is filled when ballast water is supplied from the sea chest 10 and is discharged to the outside of the ship when ballast water is discharged from the ballast tank 30.

2 is a system diagram of an electrolytic ballast water treatment system according to a second embodiment of the present invention.

The electrolytic ballast water treatment system 200 of the present embodiment is an indirect ballast water treatment system in which only a part of the mixed water is electrolyzed and mixed with the mixed water again, which is installed on the mixed water supply pipe 130. A filter 260 and an electrolysis device 250, the other components being the same as in the first embodiment.

The filter 260 filters the mixed water to remove foreign substances and microorganisms contained in the mixed water flowing into the electrolysis device 250. Since most of the microorganisms are filtered through the filter 260, the amount of electrolytic water required for treating the ballast water may be reduced. If the mixed water having a low pollution degree is not introduced through the filter 260, the mixed water may be transferred through the bypass pipe 261 without passing through the filter 260.

A portion of the mixed water that has passed through the filter 260 flows into the electrolysis device 250. The electrolysis device 250 is installed on the branch pipe 251 branched from the mixed water supply pipe 130, and the mixed water is supplied to the electrolysis device 250 using the booster pump 252.

The amount of the mixed water supplied to the electrolysis device 250 is controlled by the pollution degree sensor 131, the three-way valve 133, and the mixed water supply amount control unit 132 as in the first embodiment. here The three-way valve 133 is installed at a point where the branch pipe 251 branches from the mixed water supply pipe 130, and the valve opening and closing amount is adjusted by a signal from the mixed water supply amount control unit 132.

The electrolyzed water generated from the electrolysis device 250 is supplied to the mixed water through the electrolyzed water supply pipe 253 joining the mixed water supply pipe 130.

As such, the indirect method of treating the ballast water by electrolyzing only a part of the mixed water may treat the ballast water quickly by electrolyzing only a part of the mixed water when the ballast water is not contaminated. The electrolysis efficiency can be increased by electrolysis using the mixed water heated to a predetermined temperature as in the first embodiment, so that the ballast water treatment can be performed quickly.

3 is a system diagram of an electrolytic ballast water treatment system according to a third embodiment of the present invention.

This embodiment is an embodiment for efficiently treating the ballast water through the electrolysis device 350 installed in the safety zone 40, when the ballast water inflow and outflow pipe 320 is installed in the danger zone (50).

Here, the danger zone 50 refers to a zone where flammable gas may leak in a ship carrying crude oil or refined oil in which hydrocarbon-based gas is generated, and the safety zone 40 is a zone without such a concern. it means. When installing an electrical facility in the danger zone 50, since explosion-proof facilities are required to prevent the explosion of leaked gas, in this embodiment, the electrolysis device 350, which is an electrical facility, is installed in a safe zone, and is electrolyzed. A method of supplying the electrolyzed water produced by the apparatus 350 to the ballast water inflow and outflow pipe 320 located in the hazardous area is used.

Referring to FIG. 3, the electrolytic ballast water treatment system 300 of the present embodiment treats the ballast water by an indirect method as in the second embodiment, but the seawater flowing into the electrolysis device 350 is implemented by the second embodiment. Unlike the example, only cooling seawater is used. The electrolysis seawater supply pipe 310 and the electrolysis device 350 are disposed in the safety zone 40 and the ballast water inlet and outflow pipe 320 is disposed in the danger zone 50.

First, the piping structure of the safety zone in which the electrolysis device 350 is installed will be described.

An electrolysis seawater supply pipe 310 for supplying electrolysis seawater by the seawater pump 311 is connected to the sea chest 10 provided on the bottom of the ship.

A portion of the electrolysis sea water is supplied to the cooling device 20 through the cooling sea water supply pipe 312 branched from the electrolysis sea water supply pipe 310 as cooling sea water for cooling the cooling water 21.

The cooling sea water is heated by heat exchange with the cooling water 21 in the cooling device 20, and then joins the electrolysis sea water supply pipe 310 again through the heated sea water supply pipe 313.

The electrolytic seawater joined by the cooling seawater heated by heat exchange with the cooling water 21 is transferred through the mixed water supply pipe 330 as mixed water heated up to a predetermined temperature.

The mixed water temperature controller 340 is installed at a point where the heated seawater supply pipe 313 joins the electrolysis seawater supply pipe 310 to constantly adjust the temperature of the mixed water.

The temperature control of the mixed water is performed by opening the heated seawater supply valve 341 and the electrolysis seawater supply valve 342 using the temperature information of the temperature sensor 343 that senses the temperature of the mixed water as in the previous embodiments. It is made by the control unit 344 for adjusting the amount.

The mixed water maintained at a constant temperature by the mixed water temperature controller 340 is introduced into the electrolysis device 350 by the booster pump 351 installed in the mixed water supply pipe 330.

Electrolyzed water including sodium hypochlorite generated from the electrolysis device 350 is supplied to the ballast water inlet and outflow pipe 320 installed in the danger zone 50 through the electrolytic water supply pipe 352 passing through the partition wall 51. A check valve 353 is installed on the electrolytic water supply pipe 352. The check valve 353 is to prevent the flammable gas from the dangerous zone flows into the flange coupling portion of the pipe and flows back to the safety zone along the electrolytic water.

The amount of electrolyzed water supplied to the ballast water inlet and outlet pipe 320 may include a pollution degree sensor 324 provided upstream of the point where the electrolyzed water supply pipe 352 joins the ballast water inlet and outlet pipe 320, and the electrolyzed water supply pipe 352. Is controlled by an electrolytic water supply valve 353 provided on the upper surface of the electrolyzed water supply valve 353 and an electrolytic water supply amount control unit 325 which controls the opening / closing amount of the electrolytic water supply valve 353 according to the measurement signal of the pollution degree sensor 324.

Since the configuration of the ballast water inlet and outlet pipe 320 of the present embodiment is similar to the configuration except the electrolysis device 250 and the branch pipe 251 in the second embodiment, the ballast water inlet and outlet pipe 320 will be briefly described below. Explain.

The ballast water supply pipe 321 is connected to the sea-chest 10 provided on the bottom, the ballast water discharge pipe 322 is connected to the ballast tank (30). The ballast pump 323 is installed on the ballast water inlet and outlet pipe 320 where the ballast water supply pipe 321 and the ballast water discharge pipe 322 join.

On the upstream side of the point where the electrolytic water supply pipe 352 joins the ballast water inlet and outflow pipe 320, a filter 360 and a bypass pipe 361 are further installed to assist the electrolysis device 350 to include microorganisms contained in the seawater. It is filtered off.

By such a configuration, the present embodiment uses the electrolysis device 350 to generate the electrolyzed water through the heated seawater even when the ballast inflow pipe 320 is installed in a dangerous area where there is a risk of leakage of the loaded gas. The ballast water can be processed efficiently.

As described above, the embodiments of the present invention can maintain the temperature of the seawater supplied to the electrolysis apparatuses 150, 250, and 350 to maintain the electrolysis efficiency at an appropriate level or higher even in the sea of low temperature seawater. .

In addition, since heat exchange with the coolant 21 is performed in the cooling device 20 installed in the existing heat generator without using an additional heat exchanger, high temperature seawater discharged to the outside of the ship is used as a heat source, thereby reducing cost and energy of the ship. Can contribute to efficient use.

In addition, the cooling seawater can cover a portion of the seawater needed for the ballast, so the seawater capacity to be handled in the ballast pump (123, 223, 323) is reduced, so that the power source required to drive the ballast pump (123, 223, 323) The power consumption can be reduced, thereby reducing the cost of operating the ship.

It will be apparent to those skilled in the art that the present invention described above is not limited to the described embodiments, and various modifications and variations can be made without departing from the spirit and scope of the present invention. Accordingly, such modifications or variations are intended to fall within the scope of the appended claims.

110: cooling sea water supply pipe 113: heating sea water supply pipe
120: ballast water outflow pipe 130: mixed water supply pipe
140: mixed water temperature control unit 141: heated sea water supply valve
142: ballast water inlet and outlet valve 143: temperature sensor
144 control unit 150 electrolysis device
151: bypass piping

Claims (15)

Cooling sea water supply pipe for supplying cooling sea water from the sea-chest of the ship;
A heated seawater supply pipe extending from the cooling seawater supply pipe and supplying seawater heated through heat exchange with cooling water for cooling the heat generator in the ship;
A ballast water inflow and outflow pipe disposed to join the heated seawater supply pipe and discharge at least one of ballast water and seawater from at least one of a ballast tank of the ship and a sea-chest of the ship;
A mixed water temperature adjusting device disposed on the mixed water supply pipe that joins the heated seawater supply pipe and the ballast water inflow and outflow pipe, and adjusts a temperature of the mixed water in which the heated seawater and the ballast water are mixed; And
Electrolytic ballast water treatment system comprising an electrolysis device for electrolyzing at least a portion of the mixed water passed through the mixed water temperature control device. The method of claim 1,
The mixed water temperature control device,
Electrolytic ballast water treatment system for controlling the temperature of the mixed water by adjusting the mixing amount of the heated seawater and the ballast water. The method of claim 2,
The mixed water temperature control device,
A heated sea water supply valve provided on the heated sea water supply pipe;
A ballast water inlet and outlet valve provided on the ballast water inlet and outlet pipe;
A temperature sensor for measuring the temperature of the mixed water; And
And a control unit for adjusting the opening amounts of the heated seawater supply valve and the ballast water inlet / out valve according to the temperature information of the mixed water received from the temperature sensor. The method of claim 3,
And a fluid mixer installed at an upstream side of the temperature sensor to mix the heated seawater and the ballast water. The method of claim 1,
And a filter disposed on the mixed water supply pipe and installed upstream of the electrolysis device to filter the mixed water. The method according to any one of claims 1 to 5,
The electrolysis device,
Electrolytic ballast water treatment system is installed on the mixed water supply pipe. The method according to claim 6,
And a bypass pipe which is branched from the mixed water supply pipe to bypass the electrolysis device, and regulates a supply amount of the mixed water supplied to the electrolytic device. The method according to any one of claims 1 to 5,
The electrolysis device,
Electrolytic ballast water treatment system is installed on the branch pipe branched from the mixed water supply pipe for supplying the mixed water to the ballast tank or discharged to the outside of the vessel. 9. The method of claim 8,
And a booster pump installed on the branch pipe and supplying a part of the mixed water flowing through the mixed water supply pipe to the electrolysis device. The method according to any one of claims 1 to 5,
The ballast water outflow pipe,
A ballast water supply pipe connected to the ship's chest to supply seawater; And
Electrolytic ballast water treatment system comprising a ballast water discharge pipe for discharging the ballast water from the ballast tank. An electrolysis seawater supply pipe for supplying seawater for electrolysis from the sea chest of the ship;
A heated seawater supply pipe branching from the electrolysis seawater supply pipe and exchanging heat with the cooling water of the heating device in the ship, and then supplying heated seawater rejoining the electrolysis seawater;
The mixed water temperature arranged on the mixed water supply pipe joining the heated seawater supply pipe and the electrolysis seawater supply pipe, and constantly controlling the temperature of the mixed water in which the heated seawater and the electrolysis seawater are mixed. Regulator; And
An electrolysis device installed on the mixed water supply pipe to electrolyze the mixed water passing through the mixed water temperature controller to generate electrolytic water;
Including a ballast water inflow and outflow pipe for flowing into the ballast tank using the electrolyzed water generated from the electrolysis device or to treat any one or more of the ballast water and seawater from at least one of the ballast tank and the sea-chest of the vessel Electrolytic ballast water treatment system. The method of claim 11,
The electrolysis device is installed in the safety zone of the ship does not exist flammable gas, the ballast water inflow and outflow pipe is installed in the hazardous area of the ship where there is a risk of leakage of flammable gas electrolytic ballast water treatment system. The method of claim 12,
The mixed water temperature control device,
A heated sea water supply valve provided on the heated sea water supply pipe;
An electrolysis sea water supply valve provided on the electrolysis sea water supply pipe;
A temperature sensor for measuring the temperature of the mixed water; And
And a control unit for controlling an opening amount of the heated seawater supply valve and the electrolysis seawater supply valve according to the temperature information of the mixed water received from the temperature sensor. The method of claim 12,
The ballast water outflow pipe,
A ballast water supply pipe connected to the body of the ship and supplying seawater to the ballast tank; And
Electrolytic ballast water treatment system comprising a ballast water discharge pipe for discharging the ballast water from the ballast tank. 15. The method according to any one of claims 11 to 14,
Disposed on the ballast water inflow and outflow pipe, and installed at an upstream side of the confluence point at which any one or more of the ballast water and the seawater joined from the electrolyzed water generated from the electrolysis device is disposed at least one of the ballast water and the seawater; Electrolytic ballast water treatment system further comprising a filter for filtering.

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