KR20100062131A - Ballast water supplying apparatus and ship wiht the same - Google Patents

Abstract

PURPOSE: A ballast water supplying apparatus and a ship with the same is provided to supply ballast water, from which foreign materials and microorganism are removed, to a ship. CONSTITUTION: A ballast water supplying apparatus comprises a filter(110), a sedimentation system(120), a hydrocyclone(130), and a water treatment device(150). The filter is installed in the inlet port. The sedimentation system precipitates the foreign material included in the seawater or the fresh water passing through strainer. The sedimentation system comprises a main body and a flow control plate. The flow control plate is installed to slide to one side in the inside of the main body. The hidrocyclone divides the minute particle included in the seawater or the fresh water passing through the sedimentation system. The water treatment device removes the microorganism included in the seawater or the fresh water passing through the hidrocyclone.

Description

BALLLAST WATER SUPPLYING APPARATUS AND SHIP WIHT THE SAME}

The present invention relates to a ballast water supply apparatus and a vessel in which the ballast water is installed, and more particularly, to supply ballast water from which foreign substances and microorganisms have been removed to the vessel, thereby depositing in a ballast tank. The present invention relates to a ballast water supply device capable of preventing this from occurring and a vessel provided with it.

The ship is equipped with ballast tanks to minimize the increase in the center of gravity of the ship by loading and unloading the cargo. In other words, the ship is designed to enable economical and stable operation when the cargo is loaded, so that the ballast water in the ballast tank is adjusted according to the cargo load, so that the vessel is in a similar condition as the cargo is loaded. do.

Here, the amount of ballast water in the ballast tank is controlled by a method of introducing or discharging the surrounding seawater or fresh water into the ballast tank by a pump. Inflow or outflow of ballast water is carried out before the vessel starts to operate in earnest, so the cargo is loaded and unloaded except when entering the country where the ballast water is prohibited by law within the territorial sea. This is done at or near the port.

At this time, in the process of injecting ballast water into the ballast tank, various foreign substances mixed in seawater or freshwater in or near the port, ie, inorganic materials such as gravel, sand, mud, living organisms such as fish and shellfish or plankton, etc. Inflow.

Since the vessel can operate for several months, the foreign matter as set forth above is deposited on the bottom surface of the ballast tank while the vessel is operated while such foreign matter is introduced into the ballast tank. In particular, if the ship is operated for a long time, the deposited foreign matter may harden and stick to the bottom of the ballast tank.

Foreign material entering the ballast tank can corrode the ballast tank, and foreign matter settled or fixed on the bottom of the ballast tank increases the load on the ballast tank, that is, the vessel. When the load of the vessel is increased, it becomes difficult to operate the vessel stably, or a problem arises in that the cargo load capacity or operation speed is lowered.

On the other hand, if the ballast water in the ballast tank is discharged from the port or near the port after the ship reaches the destination, before or while loading the cargo, the foreign matter as described above mixed with the ballast water is discharged together. At this time, there have been reports of adverse effects on the environment due to changes in the ecosystem near the port by living organisms and organic substances such as shellfish and plankton.

To solve this problem, various methods have been attempted, such as installing a device for removing sediment in the ballast tank or filtering incoming seawater or fresh water.

However, the sediment once fixed may not be easily removed, and if the ballast water is continuously circulated so that the foreign matter does not settle while the ship is sailing for a long time, it may be expensive. There is a problem such as a huge time to supply to the ballast tank. In addition, the installation of additional sediment removal devices and filtering devices in the ballast tanks of already built vessels may be costly and time consuming, or may not be possible to install the devices themselves.

The present invention has been made to solve the above problems, an object of the present invention is to prevent the generation of sediment in the ballast tank by supplying the ballast water from which the foreign matter is removed to the ballast tank of the vessel.

In order to achieve the above object, according to an aspect of the present invention, the sedimentation device for precipitating foreign matter contained in the seawater or fresh water passing through the filtering net and the filtering net, and the seawater or fresh water passing through the precipitation device Provided is a ballast water supply device comprising a hydrocyclone for separating the microparticles contained in, and a water treatment device for removing microorganisms contained in seawater or freshwater that has passed through the hydrocyclone.

The precipitation apparatus includes a main body having a shape gradually narrowing toward a sediment discharge port formed at the lower end, and a plate-shaped flow control plate installed to be inclined to one side in the interior of the main body, and the inlet through which the seawater or fresh water flows through the strainer is a flow control plate. It is formed at the bottom of the outlet can be formed in the upper portion of the body.

Here, a hopper having a braille narrowing toward the sediment discharge pipe connected to the lower end, a plurality of through holes covering the upper portion of the hopper is formed, each of the plurality of through the cover to which the sediment outlet of the plurality of sedimentation apparatus is coupled, and a plurality of sediment A plurality of connecting pipes may be further included to connect the inlets and outlets of each of the devices in series.

In addition, the sedimentation apparatus includes a main body of a shape gradually narrowing toward the sediment outlet formed in the lower end, and a flow control plate of conical or polygonal shape installed inside the main body and having a vertex formed at the upper end thereof, The inlet for the fresh water is introduced to be directed toward the vertex of the flow control plate, the outlet may be formed on the upper portion of the body.

On the other hand, the ballast water supply device may be further installed marine marine attachment prevention device between the strainer and the sedimentation device. In addition, the antifouling paint may be coated on the strainer.

In order to achieve the above object, according to another aspect of the present invention, there is provided a vessel provided with the ballast water supply device as described above.

The present invention can protect the ecosystem by supplying ballast water from which foreign substances and microorganisms have been removed to the ballast tank of the ship, preventing sediment from occurring in the ballast tank, and preventing aquatic plants and animals from moving along with the ballast water. have.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a ballast water supply apparatus according to an embodiment of the present invention.

Referring to FIG. 1, the ballast water supply device 100 includes a strainer 110, a precipitation device 120, a hydrocyclone 130, a deposit storage tank 140, and a water treatment device 150.

The strainer 110 is installed at an inlet (not shown) into which seawater or freshwater to be used as ballast water is introduced. As the sieve 110, a perforated plate or a lattice board of a metal material or a synthetic resin material may be used, and prevents passage of relatively large particles among foreign matters such as gravel, shellfish and aquatic plants. Accordingly, when the pump 112 is operated, the seawater or fresh water filtered out by the sieve 110 may be introduced into the precipitation device 120 through the pipe 111.

Precipitation device 120 is a device for the precipitation of foreign matters of relatively small particle size mixed with sea water or fresh water, such as sand or carcasses of small aquatic plants and plants. The sediment accumulated in the lower portion of the sedimentation apparatus 120 is moved to the sediment storage tank 140 through the sediment discharge pipe 141 installed at the lower end of the sedimentation apparatus 120. At this time, the valve 143 installed on the sediment discharge pipe 141 is intermittently opened so that the sediment is sufficiently precipitated at the lower portion of the sedimentation apparatus 120 and then discharged. The precipitation apparatus 120 will be described again below.

Seawater or fresh water from which foreign matter having a small particle size is removed by the precipitation device 120 is moved to a hydrocyclone 130 through a pipe 121 installed in the precipitation device 120 by a pump 122.

Hydrocyclone 130 is a device that separates the dust mixed in the fluid using a centrifugal force, the incoming fluid is lowered while turning inside and then reversed rising ((昇 上昇) by the dust mixed in the fluid hydrocyclone (130) Settles to the lower part of and discharges the dust-free fluid to the outside.

Therefore, the seawater or fresh water introduced into the hydrocyclone 130 through the pipe 121 is separated from the fine particles mixed while passing through the hydrocyclone 130. The fine particles separated from the sea water or fresh water by the hydrocyclone 130 is moved to the sediment storage tank 140 through the sediment discharge pipe 145, the sea water or fresh water from which the fine particles are removed is a water treatment device through the pipe 131 Is moved to 150. The hydrocyclone 130 will be described again below.

The water treatment device 150 is a device for removing or harming microorganisms or organic substances, such as plankton, which may remain in seawater or fresh water flowing through the pipe 131.

The water treatment device 150 kills microorganisms or removes organic matter using physical, chemical, and biological treatment methods. That is, a variety of methods can be used, such as chlorine disinfection, metal ions such as copper or silver, and methods of oxidizing and sterilizing organic materials by administering ozone.

However, since the ballast water supply device 100 needs to treat a large amount of seawater or fresh water, the water treatment device 150 selects and uses a method that can be quickly treated without being harmful to the environment.

Sea water or fresh water passing through the water treatment device 150 may be moved to the storage tank 160 through the pipe 151 connected to the storage tank 160 to be stored. Alternatively, the ballast water inlet (not shown) formed in the ballast tank (not shown) of the vessel (not shown) may be moved through the pipes 155 and 161 connected to the water supply facility 170.

At this time, the seawater or fresh water passing through the water treatment device 150 is stored in the storage tank 160 when the valve 153 is opened and the valve 156 is closed, and the valve 156 is opened and the valves 153 and 163 are closed. ) Is moved to the water supply facility 170 is supplied to the vessel (not shown) as ballast water.

In addition, when the seawater or fresh water stored in the storage tank 160 is supplied to the vessel (not shown) through the water supply facility 170, the valve 156 is closed and the valve 163 installed in the pipe 161 is opened. The pump 162 is then operated.

As described above, the ballast water supply apparatus 100 according to an embodiment of the present invention is seawater or fresh water using the strainer 110, the precipitation device 120, the hydrocyclone 130 and the water treatment device 150 From the large particles mixed in to the fine particles and microorganisms are removed sequentially.

Therefore, since the ballast water supply device 100 does not use the filter as a whole, a situation in which the operation should be stopped due to clogging of the filter does not occur, and a large amount of seawater or fresh water can be processed quickly. In addition, since the sediment may be temporarily stored in the sediment storage tank 140 and treated separately, environmental pollution may be prevented, and a vessel equilibrium in which no sediment is formed in a ballast tank (not shown) of a ship (not shown) may be used. Can supply water

For reference, when the ballast water supply apparatus 100 according to an embodiment of the present invention is installed in a port (not shown), fresh water such as river water and groundwater around the port may be used, and the deposit storage tank 140 may be used. The sediment stored in it can be easily transported to a waste treatment plant, etc., by installing a plurality of water supply equipment 170 can supply the ballast water to several vessels (not shown) at the same time.

Figure 2 shows an example of the precipitation apparatus used in the ballast water supply apparatus according to an embodiment of the present invention.

2, the precipitation apparatus 120 includes a main body 127 and a flow control plate 129 installed in the main body 127. A sediment discharge port is formed at the lower end of the main body 127, and the sediment discharge pipe 141 is connected to the sediment discharge port.

The main body 127 has a shape that is gradually narrowed toward the precipitate outlet formed in the lower end. In this case, when the entire body 127 is formed to be narrowed toward the lower end, since the internal volume of the main body 127 is reduced, only the lower part of the main body 127 may be formed to be narrowed toward the lower end.

The plate-shaped flow control plate 129 is inclined to one side inside the main body 127. The flow control panel 129 is installed to isolate the inside of the main body 127 to the upper and lower parts, and part of the flow control panel 129 is opened without completely insulating the upper and lower parts. At this time, the open portion is formed in the lower portion of the inclined portion of the flow control plate 129.

On the other hand, the main body 127 is connected to the pipe 111 through which the seawater and fresh water passing through the strainer (refer 110 of FIG. 1). The pipe 111 is installed so that seawater and fresh water flow into a lower portion of the main body 127 isolated from the flow control plate 129, that is, lower than the flow control plate 129. At this time, the end of the pipe 111, that is, the inlet (not shown) of the sea water and fresh water is located below the portion separated from the upper portion by the flow control plate 129 of the lower portion of the main body 127. Therefore, the seawater or fresh water introduced through the pipe 111 flows only under the flow control plate 129 as indicated by the arrow, and does not flow above the flow control plate 129.

As seawater or fresh water is supplied to the main body 127 through the pipe 111 and flows from the lower portion of the flow control panel 129, foreign substances mixed in the seawater or fresh water flow to the upper portion 127 of the main body by the flow control plate 129. It gradually fails to settle down to the bottom of the body 127. The seawater or fresh water 3 in which the mixed foreign matter is deposited is filled into the upper portion of the main body 127 through the open portion of the flow control plate 129.

Here, if the inflow rate of the sea water or fresh water through the pipe 111 is too fast, the flow rate at the bottom of the flow control plate 129 is increased, the sediment 4 may be mixed back into the sea water or fresh water (3). Therefore, it is necessary to adjust the lift speed of the pump 112 so that sea water or fresh water does not flow into the main body 127 at an excessively high speed through the pipe 111.

The sediment 4 deposited on the lower part of the main body 127 has a sediment storage tank through the sediment discharge pipe 141 together with a portion of seawater or fresh water 3 when the valve 143 is opened as described with reference to FIG. 1. 1, see 140).

At this time, when the valve 143 is always open, all of the seawater or freshwater introduced through the pipe 111 may be discharged through the sediment discharge pipe 141. Thus, the valve 143 may have any sediment 4. Allow it to open when accumulating.

On the other hand, if the precipitate 4 accumulates too much, the precipitate 4 may be fixed to the lower portion of the main body 127 and thus the precipitate discharge pipe 141 may be blocked. Therefore, a sensor (not shown) is installed at the lower portion of the main body 127 to detect the accumulated amount of the deposit 4, and the valve 143 is automatically opened and closed in response to the signal of the sensor (not shown). If possible, the amount of seawater or fresh water 3 from which the sediment 4 is separated can be reduced to the sediment discharge pipe 141 together with the sediment 4 and the sediment 4 is fixed to the lower part of the main body 127. Can be prevented.

Meanwhile, the seawater or fresh water 3 filled in the upper portion of the main body 127 is discharged to an outlet (not shown) installed at the upper portion of the main body 127, that is, one end of the pipe 121. The seawater or freshwater 3 introduced into the pipe 121 is moved to the hydrocyclone (see 130 of FIG. 1) by the pump 122.

Figure 3 shows another example of the sedimentation apparatus used in the ballast water supply apparatus according to an embodiment of the present invention.

Referring to FIG. 3, the precipitation apparatus 1201 includes a hopper 1251 and a cover 1261. Hopper 1251 has a shape in which the upper portion is wider and the lower portion is gradually narrower, the lower end portion is connected to the sediment discharge pipe 141. The upper portion of the hopper 1251 is covered by a cover 1261 in which a plurality of through holes (not shown) are formed.

The plurality of through holes (not shown) formed in the cover 1261 are respectively connected to the sediment outlets formed at the lower ends of the plurality of main bodies 1271. Here, each of the plurality of main bodies 1271 has a shape that gradually narrows toward the sediment discharge port formed at the lower end thereof, and a flow control plate 1291 is provided in each of the plurality of main bodies 1271.

Here, the plurality of main bodies 1271 and the flow control plate 1291 may include a main body (see 127 of FIG. 2) and a flow control plate (see 129 of FIG. 2) of the precipitation apparatus (see 120 of FIG. 2) described with reference to FIG. 2. Since the structure is the same, a detailed description will be omitted.

Meanwhile, one of the plurality of main bodies 1271 is connected to a pipe 111 through which seawater and fresh water that have passed through the strainer (see 110 in FIG. 1) are introduced. Inlets (not shown) of seawater and fresh water formed at the end of the pipe 111 are located under the flow control plate 1291.

 In addition, the upper portion of the main body 1271 is provided with a connection pipe 1211 having an outlet (not shown) formed at one end thereof, and the seawater or fresh water 3 in which the foreign matter has been settled out. The other end of the connection pipe 1211 is formed with an inlet (not shown) for introducing the seawater or fresh water (3) in which foreign matter is precipitated under the flow control plate of another adjacent body. The plurality of main bodies 1271 are connected to each other in series by the plurality of connection tubes 1211.

Therefore, the seawater or fresh water passes through the plurality of main bodies 1271 in series, and foreign matters are separated, and the separated foreign matters are moved to the hopper 1251 through a sediment outlet formed at each lower end of each of the plurality of main bodies 1271. The foreign substances moved to the hopper 1251 is precipitated to form a sediment 4 at the bottom of the hopper 1251. The sediment 4 is a sediment storage tank (141) through the sediment discharge pipe 141 when the valve 143 is opened. 140). Opening and closing of the valve 143 is the same as described with reference to FIG. 2, and thus description thereof will be omitted.

The last connected one of the plurality of main bodies 1271 connected in series by the plurality of connecting pipes 1211 is provided with a pipe 121 having an outlet (not shown) formed at one end thereof. A pipe 122 is installed in the pipe 121 to move the seawater or fresh water 3 from which the precipitate 4 has been removed to a hydrocyclone (see 130 in FIG. 1).

Since the precipitation apparatus 1201 as described above undergoes a multi-step foreign matter precipitation process, the effect of removing foreign matter from seawater or fresh water is increased.

Figure 4 shows another example of the precipitation device used in the ballast water supply apparatus according to an embodiment of the present invention.

Referring to FIG. 4, the precipitation apparatus 1202 includes a main body 1272 and a flow control plate 1292 installed in the main body 1272. The main body 1272 is formed in a shape that gradually narrows toward the sediment discharge port formed in the lower end, the sediment discharge pipe 141 is provided with a valve 143 is installed.

The flow control panel 1292 is installed at the center of the body 1272. The flow control panel 1292 has a cone or polygonal pyramid having a vertex formed at an upper end thereof. The flow control panel 1292 is fixed to the center of the main body by a support or the like (not shown), so that the edge portion is opened without completely separating the inside of the main body into the upper part and the lower part.

On the other hand, the pipe 111 is installed on the top of the flow control plate (1292), the seawater and fresh water flowing through the strainer (see 110 in FIG. 1) through the inlet (not shown) formed in the end of the pipe 111 flows It flows toward the vertex of the control panel 1292.

Accordingly, the seawater or fresh water introduced through the inlet (not shown) of the pipe 111 flows to the edge portion of the flow control panel 1292 and moves to the lower portion of the main body 1272 as indicated by the arrow. Seawater or fresh water flowing down the flow control panel 1292 flows from the bottom of the flow control panel 1292 as indicated by the arrow, and foreign matter that has been contained is settled down the main body 1272.

The precipitated foreign matter forms a sediment 4 under the main body 1272. When the valve 143 is opened, the sediment storage tank (141) is formed through the sediment discharge pipe 141 together with a portion of the seawater or fresh water 3 from which the foreign matter is removed. 1, see 140).

On the other hand, after the foreign matter is removed, the seawater or fresh water 3 filled in the upper portion of the body (1272) is discharged through an outlet (not shown) formed in the end of the pipe 121 provided on the upper portion of the body (1272). The seawater or freshwater 3 introduced into the pipe 121 is moved to the hydrocyclone (see 130 of FIG. 1) by the pump 122. The hydrocyclone (see 130 of FIG. 1) will be described with reference to FIG. 5.

Figure 5 shows an example of a hydrocyclone used in the ballast water supply apparatus according to an embodiment of the present invention.

In general, the body 137 of the hydrocyclone 130 is composed of a cylindrical portion and a cone portion, the fluid is supplied in a tangential direction to the cylindrical portion.

Accordingly, the seawater or fresh water (see 3 in FIG. 2) from which the sediment (see 4 in FIG. 2) has been removed by the precipitation device 120 is pumped by the pump 122 to the main body 137 through the pipe 121. It flows in the tangential direction on the cylindrical part formed in the upper part. Seawater or freshwater introduced in the tangential direction (refer to 3 in FIG. 2) is lowered to form a swirl flow along the conical portion below the main body 137 as indicated by the arrow.

At this time, among the fine particles contained in sea water or fresh water (see 3 in FIG. 2), particles heavier than water are collected toward the side of the conical part of the main body 137 by centrifugal force. As such, the seawater or freshwater from which the fine particles are separated is inverted along the central axis of the main body from the lower end of the main body 137 as shown by a thick arrow. The reversed seawater or fresh water is discharged to the water treatment device (see 150 of FIG. 1) along the pipe 131 installed in the tangential direction through the discharge port 138.

Meanwhile, a sediment discharge pipe 145 is installed at the lower end of the conical part formed at the lower portion of the main body 137 to discharge fine particles separated from seawater or fresh water to the sediment storage tank (see 140 of FIG. 1).

Figure 6 shows a vessel in which the ballast water supply apparatus according to an embodiment of the present invention is installed.

Referring to FIG. 6, the ballast water supply device 100 according to an embodiment of the present invention is installed in a vessel 200 in which the ballast water supply device is installed, and is supplied by the ballast water supply device 100. A water supply facility 270 is provided for supplying ballast water to a ballast tank (not shown) of another vessel (not shown), and a water supply device 271 is installed at an end of the water supply facility 270.

The vessel 200 in which the ballast water supply device is installed has an area where a large amount of foreign substances are contained in seawater or freshwater, for example, a particle having a low depth or a small particle such as a mud or a silt at the bottom. While anchored in the port of the region containing a large amount of material, the inflow 203 formed in the hull 201 inflow of seawater or fresh water (1) to remove the foreign matter in the ballast water supply device 100, the port, It is possible to supply ballast water from which debris has been removed to ships (not shown) that are unloading cargo.

As such, sediment may be prevented from occurring in the ballast tank (not shown) of the vessel (not shown) that receives the ballast water from the vessel 200 in which the ballast water supply device is installed. In particular, it is not necessary to clean the ballast tank (not shown) in order to remove the sediment, or the cycle requiring cleaning can be very long, it is possible to obtain the effect of saving the operating cost of the vessel.

In addition, aquatic plants and animals along with ballast water are also prevented from moving to other areas and disturbing the ecosystem, thus protecting the environment.

On the other hand, when removing the foreign matter contained in the seawater with the ballast water supply device 100, marine life introduced along the seawater may be attached to the inside of the ballast water supply device (100). Therefore, the marine life adhesion prevention device (not shown) may be further installed in the pipe 111 connecting the sieve network (110 of FIG. 1) and the precipitation device (120 of FIG. 1) of the ballast water supply device 100. have.

As a marine organism attachment preventing device (not shown), a wide variety of methods are used, such as a method of generating ions such as copper, aluminum, iron, and the like to produce sodium hypochlorite by electrolyzing seawater. In addition to the shipbuilding industry, detailed descriptions of marine organism attachment prevention devices (not shown) are well known in fields using large amounts of seawater such as thermal power plants, nuclear power plants, seawater desalination plants, chemical plants, and steelmaking plants.

In addition, since marine organisms may be attached to the strainer (110 of FIG. 1), the antifouling paint may be coated on the surface of the strainer (110 of FIG. 1) or the strainer (110 of FIG. 1) may be prevented from attaching to marine organisms such as copper. The method of manufacturing the material may be used.

Although the ballast water supply apparatus and the vessel provided with the same according to the embodiments of the present invention have been described above, the spirit of the present invention is not limited to the embodiments presented herein, and those skilled in the art to understand the spirit of the present invention Within the scope of the same idea, other embodiments may be easily proposed by adding, changing, deleting or adding components, but this will also fall within the scope of the present invention.

1 is a system diagram of a ballast water supply apparatus according to an embodiment of the present invention.

2 is a cross-sectional view of an example of the precipitation device shown in FIG.

3 is a sectional view of another example of the precipitation device shown in FIG. 1;

4 is a sectional view of another example of the precipitation device shown in FIG. 1;

5 is a perspective view of the hydrocyclone shown in FIG.

Figure 6 is a cross-sectional view of the vessel is installed ballast water supply apparatus according to an embodiment of the present invention.

<Description of the symbols for the main parts of the drawings>

110: strainer 120: sedimentation device

130: hydrocyclone 140: sediment storage tank

150: water treatment device 160: storage tank

170, 270: water supply equipment 271: water supply equipment

Claims (7)

Strainer installed at the inlet; A precipitation device for precipitating foreign matter contained in seawater or freshwater that has passed through the strainer; Hydrocyclone to separate the fine particles contained in the sea water or fresh water passing through the precipitation device; And And a water treatment device for removing microorganisms contained in seawater or freshwater that has passed through the hydrocyclone. The method of claim 1, The precipitation device, A main body gradually narrowing toward the sediment outlet formed at the lower end; And It includes a plate-shaped flow control plate installed to be inclined to one side inside the main body, The ballast water supply apparatus is formed in the lower portion of the flow control plate, the inlet for entering the seawater or fresh water passing through the strainer, the outlet is formed in the upper portion of the main body. The method of claim 2, Hopper narrowed toward the sediment discharge pipe connected to the lower end; A cover for covering an upper portion of the hopper, and having a plurality of through holes formed therein, each of the plurality of through holes having the sediment discharge ports of the settling device coupled thereto; And The ballast water supply device further comprises a plurality of connecting pipes for connecting the inlet and the outlet of each of the plurality of precipitation devices in series. The method of claim 1, The precipitation device, A main body gradually narrowing toward the sediment outlet formed at the lower end; And Is installed inside the main body, including a flow control plate of a cone or polygonal pyramid having a vertex formed on the upper end, The inlet port, through which the seawater or fresh water is introduced, is introduced to the vertex of the flow control panel, and the outlet port is formed on the upper portion of the body, and the ballast water supply device. The method of claim 1, The ballast water supply device further comprises a marine life adhesion prevention device installed between the strainer and the precipitation device. The method of claim 1, The ballast water supply device, the antifouling paint is coated on the strainer. Ship ballast water supply device is installed, the ballast water supply device according to claim 1 is installed.

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