KR20150042913A - Neutralization system for discharging of ballast water - Google Patents

Abstract

Disclosed is a neutralizing system for discharging completely neutralized ballast water, wherein the neutralizing system comprises: a ballast water discharging line providing a pathway through which sterilized ballast water stored in a ballast tank can be discharged to the outside; and a neutralizing agent providing device including a neutralizing agent storing tank for storing a neutralizing agent and a neutralizing agent discharging line for providing a pathway through which the neutralizing agent stored in the neutralizing agent storing tank can be moved to the ballast water discharging line. In the neutralizing agent providing device, before the sterilized ballast water is discharged through the ballast water discharging line, the neutralizing agent stored in the neutralizing agent storing tank is maintained while being filled in the neutralizing agent discharging line.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a neutralization system for discharging ballast water,

The present invention relates to a neutralization system for fully neutralized ship ballast water discharge.

A ship is widely used as a means of transporting large quantities of goods at once or for military purposes.

If there are not enough people, equipment, and goods (collectively referred to as cargo), the ship will not sink sufficiently into the water, so it can be easily shaken by small waves, and even propellers and rudders are not sufficiently immersed in water. It is not operated efficiently.

Therefore, ships unloading freight are operated with ballast water containing ballast water in order to maintain balance and stability. As a result, the ballast water serves as a weight to adjust the ship's draft and trim.

On the other hand, when a ballast tank receives ballast water and arrives at a port in another region or another country, the ballast water is discharged to the sea of the destination to reduce the weight of the ship and load the cargo again.

Thus, while the ballast water is essential for maintaining the balance and stability of the ship, the ballast water is stored in the ballast tank for a long time, and also serves to mix the seawater belonging to different regions of the ballast water with each other And the ballast water is sterilized and stored in the ballast tank.

On the other hand, the ballast water stored in the ballast tank can be discharged (DEBALLASTING) after lowering the TRO concentration below the statutory reference value by using a neutralizing agent. In this process, a small amount of neutralizing agent can be used.

According to an embodiment of the present invention, a neutralization system for discharging fully neutralized ballast water can be provided, which can completely neutralize ballast water discharged to the outside using an appropriate amount of neutralizing agent.

According to an embodiment of the present invention, there is provided a ballast water discharge apparatus comprising: a ballast water discharge line for providing a path through which sterilized ballast water stored in a ballast tank can be discharged to the outside; And a neutralizing agent supply device including a neutralizing agent storage tank for storing a neutralizing agent and a neutralizing agent discharging line for providing a path through which the neutralizing agent stored in the neutralizing agent storage tank can be moved to the ballast water discharging line, , And the neutralizing agent stored in the neutralizing agent storage tank is filled in the neutralizing agent discharge line before the sterilized ballast water is discharged through the ballast water discharging line. Can be provided.

According to one or more embodiments of the present invention, neutralizing the ballast water discharged to the outside can be completely neutralized by using an appropriate amount of neutralizing agent.

3 is a view for explaining a ship ballast water treatment system to which a neutralization system according to an embodiment of the present invention is applied,
4 is a view for explaining a ship ballast water treatment system to which a neutralization system according to another embodiment of the present invention is applied
5 and 6 are views for explaining that an apparatus for generating ultra-fine bubbles of ozone according to an embodiment of the present invention is mounted on a ballast water inflow main line,
7 to 9 are views for explaining a nozzle according to an embodiment of the present invention,
10 is a view for explaining the operation of the nozzle according to an embodiment of the present invention,
Fig. 11 is a view for explaining a fine hole formed in the nozzle illustrated in Figs. 7 to 9. Fig.

BRIEF DESCRIPTION OF THE DRAWINGS The above and other objects, features, and advantages of the present invention will become more readily apparent from the following description of preferred embodiments with reference to the accompanying drawings. However, the present invention is not limited to the embodiments described herein but may be embodied in other forms. Rather, the embodiments disclosed herein are provided so that the disclosure can be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

In this specification, when an element is referred to as being on another element, it may be directly formed on another element, or a third element may be interposed therebetween. Also in the figures, the thickness of the components is exaggerated for an effective description of the technical content.

Embodiments described herein will be described with reference to cross-sectional views and / or plan views that are ideal illustrations of the present invention. In the drawings, the thicknesses of the films and regions are exaggerated for an effective description of the technical content. Thus, the shape of the illustrations may be modified by manufacturing techniques and / or tolerances. Accordingly, the embodiments of the present invention are not limited to the specific forms shown, but also include changes in the shapes that are produced according to the manufacturing process. For example, the etched area shown at right angles may be rounded or may have a shape with a certain curvature. Thus, the regions illustrated in the figures have attributes, and the shapes of the regions illustrated in the figures are intended to illustrate specific forms of regions of the elements and are not intended to limit the scope of the invention. Although the terms first, second, etc. have been used in various embodiments of the present disclosure to describe various components, these components should not be limited by these terms. These terms have only been used to distinguish one component from another. The embodiments described and exemplified herein also include their complementary embodiments.

The terminology used herein is for the purpose of illustrating embodiments and is not intended to be limiting of the present invention. In the present specification, the singular form includes plural forms unless otherwise specified in the specification. The terms "comprises" and / or "comprising" used in the specification do not exclude the presence or addition of one or more other elements.

Hereinafter, the present invention will be described in detail with reference to the drawings. In describing the specific embodiments below, various specific details have been set forth in order to explain the invention in greater detail and to assist in understanding it. However, it will be appreciated by those skilled in the art that the present invention may be understood by those skilled in the art without departing from such specific details. In some instances, it should be noted that portions of the invention that are not commonly known in the description of the invention and are not significantly related to the invention do not describe confusing reasons to explain the present invention.

Definition of Terms

As used herein, the term " ultrafine bubbles " means bubbles having a size of bubbles ranging from a few nanometers to a few hundred nanometers or a few micrometers to a few hundreds of micrometers.

FIG. 1 and FIG. 2 are views for explaining a neutralization system (hereinafter referred to as a 'neutralization system') for fully neutralized ship ballast water discharge according to an embodiment of the present invention.

Referring to these drawings, the ship ballast water treatment system includes a neutralizer providing device 500, a ballast tank for storing sterilized ballast water, a ballast water discharge line L31 for providing a path for discharging ballast water to the outside, A TRO sensor capable of sensing the TRO concentration of the ballast water flowing on the ballast water discharge line, and a central control unit for determining the amount of the neutralizing agent input using the sensing result of the TRO sensor .

In the present specification, the term "neutralization system" refers to a neutralizing agent supply apparatus 500, or may be collectively referred to as a neutralizing agent supply apparatus 500, a central control unit, and a TRO sensor.

The neutralizing agent supply apparatus 500 includes a neutralizing agent storage tank 502, an accumulator 504, a relief valve 506, a first pump 508, a three-way valve (3W V / V) The valve 512, the second pump 514, and a neutralizer discharge line that provides a path through which the neutralizer stored in the neutralizer storage tank 502 can travel to the ballast water discharge line L31. Here, the accumulator 504, the relief valve 506, the first pump 508, the three-way valve (3W V / V) 510, and the first valve 512 are located on the neutralizer discharge line.

The neutralizing agent storage tank 502 stores the neutralizing agent.

The accumulator 504 is a device for providing a certain amount of neutralizing agent moving inside the neutralizing agent discharge line, and reduces the pressure fluctuation of the neutralizing agent discharge line.

The relief valve 506 is located on the neutralizer discharge line and is located between the first pump 508 and the first valve 512. When the pressure inside the neutralizer discharge line becomes higher than a predetermined reference pressure, A portion of the neutralizing agent present in the solution flows out to the other side.

Referring to FIGS. 1 and 2, when the pressure inside the neutralizing agent discharge line becomes higher than a predetermined reference pressure, the relief valve 506 causes a part of the neutralizing agent present in the neutralizing agent discharge line to flow out to the neutralizing agent storage tank again. The relief valve 506 valve need not necessarily flow into the neutralizer storage tank, which can be implemented in other ways as an exemplary configuration.

The first pump 508 pumps the neutralizing agent stored in the neutralizing agent storage tank 502 into the ballast water discharge line L31. The amount by which the first pump 508 pumps the neutralizing agent is determined under the control of the central control unit. In the present embodiment, the central control unit controls the neutralizing agent supply device, but this is merely an example, and it is also possible to provide a separate control device for the neutralizing agent supply device other than the central control unit.

The first pump 508 keeps the neutralizing agent stored in the neutralizing agent storage tank 502 filled in the neutralizing agent discharge line under the control of the central control unit before the sterilized ballast water is discharged through the ballast water discharge line L31 .

A three-way valve (3W V / V) 510 is provided to facilitate cleaning. For example, the three-way valve 510 may be located on the neutralizer discharge line and may be operated to open or close between the first valve 508 and the neutralizer storage tank 502, 502, respectively. Alternatively, the three-way valve 510 may be located on the neutralizer discharge line and may be actuated to open or close between the first valve 508 and the neutralizer reservoir tank 502, It is possible to perform an operation of opening or closing the door.

The first valve (512) is located on the neutralizer discharge line and opens or closes the introduction of the neutralizer flowing in the neutralizer discharge line into the ballast water discharge line.

The second pump 514 pumps the neutralizing agent from the neutralizing agent supply and provides it to the neutralizing agent storage tank 502.

The neutralizing agent supply apparatus 500 can maintain the neutralizing agent stored in the neutralizing agent storage tank 502 filled in the neutralizing agent discharge line through the ballast water discharging line before discharging sterilized ballast water.

The neutralizing agent supply apparatus 500 may also be configured to discharge the sterilized ballast water through the ballast water discharge line so that the pressure inside the neutralizing agent discharge line is lowered when the sterilized ballast water is discharged through the ballast water discharge line It can be maintained at a pressure equal to or higher than the internal pressure of the line.

In this case, for example, with the valve 512 closed, the pump 508 pumps the neutralizing agent from the neutralizer tank 502 until the pressure is equal to or higher than the internal pressure of the ballast water discharge line .

The reason for raising the pressure in the neutralizer discharge line in advance is that the internal pressure when the ballast water flows through the ballast water discharge line is considerably high and therefore the pressure of the neutralizer discharge line is equal to or lower than the pressure of the ballast water discharge line If it is not maintained high, neutralizing agent can not be injected.

If the pressure of the neutralizing agent discharge line is not maintained to be equal to or higher than the pressure of the ballast water discharge line, there arises a problem that the neutralizing agent is not smoothly injected for a predetermined time from the moment it starts to discharge through the ballast water discharge line.

On the other hand, the neutralizing agent supply apparatus 500 injects an overdosage neutralizing agent into the ballast water discharge line through the ballast water discharge line for a predetermined time from the start of discharging sterilized ballast water.

Herein, the overdosage amount of the neutralizing agent is determined based on the storage time of the ballast water stored in the ballast tank and the TRO reduction data, which is the data indicating the TRO concentration of the sterilized ballast water according to the storage time of the sterilized ballast water stored in the ballast tank will be.

The determination of the amount of neutralizing agent may be made in the central control unit, but this is merely an example, and it is also possible to provide a separate control device. And a specific example of determining the dose will be described later with reference to Fig.

3 is a view for explaining a ship ballast water treatment system to which a neutralization system according to an embodiment of the present invention is applied.

Referring to FIG. 3, a ship ballast water treatment system (hereinafter, referred to as a 'ship ballast water treatment system') according to an embodiment of the present invention includes, for example, a fully neutralized ship ballast water discharge A neutralization system is used.

The present ship ballast water treatment system includes a compressor 101, an air dryer 103, an air receiver tank 105, an oxygen generator 107, an oxygen storage tank 109, an ozone generator 111, a central control unit 113 A chiller 115, an ozone gas breakdown unit 119, an ozone ultra-fine bubble generator 200, a ballast water storage tank 301 for storing seawater, and a neutralizing agent supply unit 402. Here, the neutralizer supply device 402 may be the neutralizer supply device described with reference to FIGS.

The neutralizing agent may be, for example, any one selected from the group consisting of a sulfite, sulfur dioxide, sodium hydrogen sulfite and sodium sulfite, but the neutralizing agent usable in the present invention is not limited thereto.

In the present ship ballast water treatment system, the ballast water discharge line L31 and the ballast water inflow line are commonly used. In the sterilization mode (operation for sterilizing and storing ballast water is performed), the line indicated by L31 It should be noted that, while operating as a ballast water inflow line, in the neutralization mode (with the action of discharging sterilized ballast water), the line labeled L31 acts as a ballast water discharge line.

The compressor 101 receives air from the outside, compresses it, and supplies the compressed air to the air dryer 103. Here, the air flowing into the air dryer 103 can be cooled by the chiller 115.

The air dryer 103 dries the air introduced from the compressor 101 and stores the air in the air receiver tank 105.

The oxygen generator 107 receives the air stored in the air receiver tank 105, generates oxygen, and stores the oxygen in the oxygen storage tank 109.

The ozone generator 111 receives the oxygen stored in the oxygen storage tank 109 and generates ozone gas. In this embodiment, a large amount of heat is generated in the ozone generator 111, so that the ozone generator 111 can be cooled by the chiller 115 or a cooler (not shown).

The central control unit 113 can control the operation of each device.

The ozone ultra-fine bubble generator 200 receives the ozone gas generated by the ozone generator 111 and can generate ultra-fine ozone in the ballast water inflow main line.

When the ozone gas destruction portion 119 needs to destroy the ozone gas present in the ozone gas inflow line, the ozone gas destruction portion 119 can discharge the ozone gas to the atmosphere after destroying the ozone gas.

The ozone ultra-fine bubble generator 200 generates ozone ultra-fine bubbles in the ballast water inflow main line L31. The ballast water inflow In the main line (L31), the ultra-minute ozone bubbles kill the creatures in the ballast water.

The ballast water storage tank 301 is where the seawater is stored and the seawater stored in the ballast water storage tank 301 is sucked by the drive water pump P32 and supplied to the ozone ultra microbubble generator 200. [

The TRO sensor 305 senses the TRO concentration after the ozone ultrafine bubbles containing ozone gas are introduced into the ballast water by the ozone ultrafine bubble generator and transmits the sensing result to the central control unit 113 .

The central control unit 113 receives the TRO concentration sensing result from the TRO sensor 305 and compares the reception result with the previously stored reference range and controls the ozone gas amount control valve 117 to control the ozone gas amount .

For example, when the TRO concentration sensed by the TRO sensor 305 is equal to or greater than the reference range, the central control unit 113 closes the ozone gas amount control valve to some extent and supplies a smaller amount of ozone to the ozone gas inflow line L33 Allow gas to flow.

On the other hand, when the TRO concentration sensed by the TRO sensor 305 is below the reference range, the ozone gas amount control valve is opened to some extent so that more ozone gas flows into the ozone gas inflow line L33.

In this way, the central control unit 113 can adjust the amount of total residual oxides remaining in the ballast water to be constant to meet the standard.

The ship ballast water treatment system may further include a water vent 302 for discharging the backward ballast water to the outside in case of backflow of the ballast water through the ozone gas inflow line. This is because the ozone generator can be damaged if the backflowed ballast water enters the ozone generator.

The ship ballast water treatment system can perform an operation of sterilizing the seawater introduced as ballast water (hereinafter, referred to as 'sterilization mode') and a mode of neutralizing the sterilized seawater to discharge it to the outside ('neutralization mode') have. Hereinafter, the sterilization mode and the neutralization mode will be described sequentially.

Sterilization mode

In the sterilization mode, the present ship ballast water treatment system sucks the ballast water and fills the ballast tank 303. In this process, the ballast water filled in the ballast tank 303 is sterilized using ozone ultra-fine bubbles do.

The valve V32 (or V41), V33 is opened, and the valves V32, V43, and V45 are closed. The opening or closing of these valves may be done manually or automatically by a control device such as central control 113 (see FIG. 3).

The ballast pump P33 sucks the ballast water and supplies it to the ballast water inflow main line L31. The drive water pump P32 sucks the seawater stored in the ballast water storage tank and supplies it to the ozone ultrasonic bubble generator 200, .

The ozone ultrafine foam generator 200 receives the ozone gas generated by the ozone generator 111 and generates ozone ultrafine bubbles in the ballast water inflow main line. As a result, the ballast water that has been transferred from the ballast water inflow main line to the ballast tank 303 is sterilized.

The TRO sensor 305 is mounted at the rear end of the ozone ultra fine bubble generator 200 and senses the TRO of the ballast flowing into the ballast water inflow main line. The TRO sensor 305 provides the sensing result to the central control unit 113 and the central control unit 113 controls the opening or closing of the ozone gas amount control valve 117 based on the sensing result of the TRO sensor 305 . Thus, the TRO of the ballast flowing in the ballast water inflow main line is appropriately maintained.

Neutralization mode

In the neutralization mode, the present ship ballast water treatment system neutralizes the ballast water filled in the ballast tank 303 and discharges it to the outside.

The valve V32, the valve V33 and the valve V41 are closed and the valve V34, the valve V43 and the valve V45 are opened. The opening or closing of these valves may be done manually or automatically by a control device such as central control 113 (see FIG. 3).

The ballast pump P33 sucks the ballast water filled in the ballast tank 303 and flows into the ballast water inflow main line L31. The ballast water flowing along the inside of the ballast water inflow main line L31 is neutralized by the neutralizer introduced from the neutralizer supply device 402 and then discharged through the valve 34 to the outside.

The TRO sensor 306 senses the TRO of the ballast water flowing out of the ballast tank 303. The TRO sensor 306 provides the sensing result to the central control unit 113 and the central control unit 113 controls the neutralization agent stored in the neutralizer providing apparatus 402 based on the sensing result of the TRO sensor 306, Determines how much to put into the main line L31. When the neutralizer input amount is determined, the central control unit 113 inputs the neutralizer into the ballast water inflow main line L31 by the determined input amount.

Thereby, the ballast water flowing into the ballast water inflow main line can be properly neutralized.

A method for the central control unit 113 to determine the amount of the neutralizing agent to be charged will be described.

The central control unit 113 determines the amount of neutralizing agent to be added to the ballast tank 303 by using the stored reference data (TRO reduction data) as to how long the ballast water stored in the ballast tank 303 has been stored (S201) .

The central control unit 113 inputs the neutralizing agent by the amount of overcharge determined in step S201 for a predetermined time from the neutralization mode start time (S203).

When the predetermined time has elapsed, the central control unit 113 determines the amount of neutralizing agent input based on the sensing amount of the TRO sensor 306 (S205).

The central control unit 113 inputs the neutralizing agent by the amount of injection determined in step S205 (S207).

The central control unit 113 determines whether to end the neutralization mode (for example, by sensing the amount of ballast water stored in the ballast tank 303), and if so (S209: Y) Stop. On the other hand, if it is determined that the neutralization mode is not to be terminated (S209: N), the process returns to step S205.

The step S203 will be described in more detail. The reason for over-dosing the neutralizing agent in step S203 is that it takes a short time to utilize the sensing result of the TRO sensor 306 at the moment when the neutralization mode is started.

Therefore, when the neutralization mode is started, the neutralizing agent is overdosed as in step S203. Normally, when the amount of neutralizing agent required for neutralization is 100%, 120% of the neutralizing agent is determined as the overdosage amount.

On the other hand, the present inventors have noted that the TRO of the ballast water stored in the ballast tank 303 decreases with time (because the ozone dissolved in the ballast water decomposes with time). That is, the present inventors previously prepared data indicating the degree of reduction of the TRO of the ballast water stored in the ballast tank 303 according to the storage time of the ballast water stored in the ballast tank 303, (Hereinafter, referred to as " TRO reduction data ") was used to determine the dose and dosage.

The TRO reduction data shows data representing the TRO concentration of the sterilized ballast water according to the storage time of the sterilized ballast water stored in the ballast tank. See Table 1 below.

The TRO reduction data can be created experimentally and / or theoretically in consideration of the temperature at which the ballast tank 303 is installed, and the TRO reduction data thus created is used by the central control unit 113.

That is, in step S201, the central control unit 113 can determine the overdose using information on how long the ballast stored in the ballast tank 303 has been stored, and the TRO reduction data.

Storage time (h)  TRO 12  12 18  6 24  3 30  1. 5 ...  ...

Table 1 is an example of TRO reduction data, wherein the numerical values are for the purpose of description of the present invention only. Thus, the actual TRO reduction data may appear differently.

Assuming that the TRO reduction data as shown in Table 1 is used and that the ballast water is stored in the ballast tank 303 for about 18 days, the central control unit 113 corrects the ballast water having a TRO of 6 in step S201 A neutralizing agent of about 1.2 times the amount of the neutralizing agent that can be used can be determined as an overdose. Here, it is needless to say that 1.2 times is an exemplary value.

Determination of the overdose using the TRO reduction data, as in this example, allows the determination of appropriate overdose.

The central control unit 113 controls the neutralizing agent storage unit according to the above-described method so that an appropriate neutralizing agent is introduced into the ballast water.

In the ship ballast water treatment system described above with reference to FIG. 3, the central control unit 113 performs steps S201 to S209. However, this is an example, and a separate apparatus other than the central control unit 113 It is also possible to determine the amount of the neutralizing agent to be supplied.

In addition, in the ship ballast water treatment system described with reference to FIG. 3, it is possible to remove the path through which the ballast water flows from the ballast water storage tank 301 through the ballast valve V32. With this configuration, in the sterilization mode, the ballast pump P33 always sucks the ballast water through the valve V41.

4 is a view for explaining a ship ballast water treatment system according to an embodiment of the present invention.

Referring to FIG. 4, the ship ballast water treatment system according to an embodiment of the present invention is capable of adjusting the amount of the neutralizing agent used for discharging the ship ballast water.

The present ship ballast water treatment system includes a compressor 101, an air dryer 103, an air receiver tank 105, an oxygen generator 107, an oxygen storage tank 109, an ozone generator 111, a central control unit 113 A chiller 115, an ozone gas breakdown unit 119, an ozone ultra-fine bubble generator 200, a ballast water storage tank 301 for storing seawater, and a neutralizing agent supply unit 402. Here, the neutralizer supply device 402 may be the neutralizer supply device described with reference to FIGS.

Comparing the embodiment of FIG. 3 with the embodiment of FIG. 4, that is, in the embodiment of FIG. 4, both are the same except that the neutralizer is injected into the front end of the ballast pump P33.

5 and 6 are views for explaining that an apparatus for generating ultra-fine bubbles of ozone according to an embodiment of the present invention is mounted on a ballast water inflow main line.

5 and 6, the ozone ultrafine foam generator 200 is provided with an ozone ultra-bubble generator in a ballast water inflow main line in the shape of a cylinder 211 in which the inside is empty so that the ballast water can flow have.

The ozone ultra-fine bubble generator 200 includes a nozzle 240, an ozone gas inflow line 212 through which ozone gas flows, a protrusion 213, a fixing plate 215, and a water inflow line 217 .

The nozzle 240 is connected to the ozone gas inflow line 212 to receive ozone gas and is connected to the water inflow line 217 to receive water (seawater stored in the ballast water storage tank) (Hereinafter referred to as " ozone gas dissolving water ") is injected into the ballast water inflow main line to generate fine bubbles.

The ozone ultrasonic bubble generator 200 is installed in a part of the ballast water inflow main line L31 in a state in which the ballast water inflow main line L31 is mounted in a cylinder 211 having the same or similar shape and size as the ballast water inflow main line L31 . Here, the flanges F are connected to each other so as to connect the main line L31 and the cylinder 211 in which the ozone ultra-bubble generator 200 is mounted. The bin 211 in which the ozone ultra-fine bubble generator 200 is mounted is a part of the main line L31, and the bin 211 is distinguished only when there is a special advantage to be distinguished.

According to one embodiment of the present invention, a portion of the side of the cylinder 211 is opened, and the open portion is located in the radial direction of the protrusion 213, and the ozone gas inflow line L33 and 212 and the water inflow lines L32 and 217 are fixed. Meanwhile, a support frame 231 for supporting the cylinder 211 may be additionally disposed.

According to one embodiment of the present invention, the nozzle 240 may be disposed in a direction parallel to the direction in which the ballast water flows. The internal structure and detailed operation of the nozzle 240 will be described later with reference to FIGS. 7 to 10. FIG.

With continued reference to FIG. 5, a section in which a window 221 in which an interior is visible can be additionally disposed. The window 221 is an optional device for visually confirming whether ultra-fine bubbles have flowed well into the inside of the window 221 for convenience of management.

7 to 10 are views for explaining a nozzle according to an embodiment of the present invention.

Referring to these figures, the nozzle 240 includes a body 241, 243 and a collision portion 244, 246, 242.

The main body 241 and the collision portions 244, 246 and 242 are coupled to each other and the main body 241 and the collision portions 244, 246 and 242 are shown separated from each other for the sake of explanation.

The main body 241 has a cylindrical shape as a whole, and the chamber 243 surrounds a part of the main body 241 from the outside.

The main body 241 has a first flow path P1 connected to the water inflow line 217 to receive water and a second flow path S2 connected to the first flow path P1 and flowing out from the first flow path P1 A second flow path P2 for introducing the ozone gas from the ozone gas inflow line 212 and for discharging ozone gas dissolved water and a third flow path P2 for flowing the ozone gas dissolved water from the second flow path P2, And a flow path P3.

The ozone gas is introduced at or near the point where the first flow path P1 and the second flow path P2 meet. The chamber 243 surrounds a portion where the first flow path P1 and the second flow path P2 meet with each other and is connected to the ozone gas inflow pipe 212 to supply ozone gas flowing from the ozone gas inflow pipe 212 It can be saved temporarily.

The chamber 243 is formed with an opening 245 connected to the ozone gas inflow pipe 212. The ozone gas inflow pipe 212 may be inserted into the opening 245, for example, in a fitting manner. The chamber 243 will be described later in detail with reference to FIG.

The diameter of the first flow path P1 is smaller than that of the second flow path P2, which is connected to the water inflow line 217. That is, the diameter of the first flow path P1 becomes smaller as it gets closer to the second flow path P2 and the diameter of the second flow path P2 becomes smaller as it gets closer to the first flow path P1, (P3).

Since the pressure of the supplied water is greater than the pressure inside the ozone gas inflow line 212, the ozone gas in the ozone gas inflow line 212 naturally flows into the water inflow line. The relative diameters of the first flow path P1, the second flow path P2, and the third flow path P3 are as described above.

The collision portion includes an impact portion main body 249 which receives the ozone gas dissolved water flowing out of the third flow path P3, an annular ring 242 fitted in a fitting manner with the outflow end 248 of the main body 248, An impingement plate 244 which collides with the dissolved ozone gas flowing out from the outflow end 248 of the main body 249 and a support base 246 which fixes the impingement plate 244 in a state of being separated from the annular ring 242 .

The impingement plate 244 may be formed of, for example, a circular plate. The ozone gas dissolved water flowing out from the main body 249 collides with the impingement plate 244, and ultrafine bubbles are generated. The ultrafine bubbles generated while bumping into the collision plate 244 are directed to the inner wall surface of the ballast water inflow main line as shown in FIG.

By this impingement plate 244, the ultra-fine ozone bubbles can be uniformly sprayed over the entire area of the ballast main pipe.

Fig. 11 is a view for explaining a fine hole formed in the nozzle illustrated in Figs. 7 to 8; Fig.

Referring to FIG. 11, the first flow path P1 or the second flow path P2 is connected to the chamber 243 through at least one fine hole 247. The ozone gas temporarily stored in the chamber 243 flows into the first flow path P1 or the second flow path P2 through at least one fine hole 247. [

The flow of the ballast water flowing through the first flow path P1 and the second flow path P2 is fast so that the ozone gas stored in the chamber 243 flows naturally into the first flow path P1 and the second flow path P2, And can flow into the flow path P2.

As described above, the ozone ultra-bubble generator described with reference to Figs. 5 and 6 can be applied to the ship ballast water treatment system described in Figs. 1 and 2 described above.

In addition, the nozzle described with reference to Figs. 7 to 11 can be applied to the ship ballast water treatment system described in Figs. 1 and 2 described above.

According to one or more embodiments of the present invention described above, it is possible to exert an excellent effect in continuously killing marine invasive species remaining in the ballast tank.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention. Accordingly, such modifications or variations are intended to fall within the scope of the appended claims.

101: compressor 103: air dryer
105: air receiver tank 107: oxygen generator
109: oxygen storage tank 111: ozone generator
113: Central control unit 115: Chiller
119: ozone gas destruction part
200: Ozone ultra-fine bubble generator 301: Seawater storage tank
402; Neutralizing agent supply device

Claims (10)

A ballast water discharge line for providing a path through which sterilized ballast water stored in the ballast tank can be discharged to the outside; And
And a neutralizing agent supply device including a neutralizing agent storage tank for storing the neutralizing agent and a neutralizing agent discharging line for providing a path through which the neutralizing agent stored in the neutralizing agent storage tank can be moved to the ballast water discharging line,
Wherein the neutralizing agent supply device holds the neutralizing agent stored in the neutralizing agent storage tank in the neutralizing agent discharge line before the sterilized ballast water is discharged through the ballast water discharging line. Neutralization system for discharging. The method according to claim 1,
Wherein the neutralizing agent supply device comprises:
The pressure in the neutralizing agent discharge line may be adjusted to a value that is less than the internal pressure of the ballast water discharge line when the sterilized ballast water is discharged through the ballast water discharge line At a pressure equal to or higher than the pressure of the ballast water. The method according to claim 1,
The neutralizing agent supply device supplies an overdosage neutralizer to the ballast water discharge line at the moment when the sterilized ballast water is discharged through the ballast water discharge line,
The neutralizer of the overdose is determined by using the storage time of the ballast water stored in the ballast tank and the TRO reduction data, which is the data indicating the TRO concentration of the sterilized ballast water according to the storage time of the sterilized ballast water stored in the ballast tank Wherein the neutralization system is for neutralizing the ballast water of the ship. The method according to claim 1 or 3,
Wherein the neutralizing agent supply device comprises:
A pump positioned on the neutralizer discharge line; And
And a valve located on the neutralizer discharge line and disposed between the pump and the ballast water discharge line,
Wherein the valve is maintained in a closed state before the sterilized ballast water is discharged through the ballast water discharge line,
The pump pumps the neutralizing agent stored in the neutralizing agent storage tank in a state where the valve is closed so that the neutralizing agent discharge line is pressurized to a pressure equal to or higher than a pressure at which the ballast water is discharged to the ballast water discharge line The neutralization system for discharging the ballast water of the fully neutralized ship. 5. The method of claim 4,
Wherein the neutralizing agent supply device comprises:
And a relief valve located on the neutralizer discharge line and positioned between the pump and the valve,
Wherein the relief valve discharges a part of the neutralizing agent present in the neutralizing agent discharge line to the other when the pressure inside the neutralizing agent discharge line becomes higher than a predetermined reference pressure. system. 5. The method of claim 4,
Wherein the neutralizing agent supply device comprises:
And a pump for pumping a neutralizing agent to the neutralizing agent storage tank to supply the neutralizing agent to the neutralizing agent storage tank. 5. The method of claim 4,
Wherein the neutralizing agent supply device comprises:
Further comprising an accumulator for providing a predetermined amount of a neutralizing agent moving in the neutralizing agent discharge line. A central control unit for determining an overdose of the neutralizing agent to be added to the ballast water in order to neutralize the ballast water stored in the ballast tank and discharged to the outside; And
And a neutralizing agent supply device for injecting an overdosage neutralizer determined by the central control unit at the moment when the sterilized ballast water is discharged through the ballast water discharge line. 9. The method of claim 8,
The central control unit,
Wherein the TRO reduction data is data indicating a TRO concentration of the sterilized ballast water according to the storage time of the sterilized ballast water stored in the ballast tank and the TRO concentration of the sterilized ballast water stored in the ballast tank Wherein the overdose is determined by using the time. 10. The method of claim 9,
The neutralizing agent supply apparatus includes a neutralizing agent storage tank for storing a neutralizing agent and a neutralizing agent discharge line for providing a path through which the neutralizing agent stored in the neutralizing agent storage tank can move to the ballast water discharge line,
Wherein the neutralizing agent supply device supplies the neutralizing agent discharged through the ballast water discharging line to the ballast water discharging line through the ballast water discharging line before discharging the sterilized ballast water through the ballast water discharging line, Wherein the pressure of the ballast water is maintained at a pressure equal to or higher than the internal pressure of the discharge line.

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