KR20170052070A

KR20170052070A - Ballast water management apparatus

Info

Publication number: KR20170052070A
Application number: KR1020150154022A
Authority: KR
Inventors: 김만수; 전상익; 조태민; 최충영
Original assignee: 삼성중공업 주식회사
Priority date: 2015-11-03
Filing date: 2015-11-03
Publication date: 2017-05-12

Abstract

According to an embodiment of the present invention, a ballast water treatment apparatus comprises: a sterilization device sterilizing ballast water flowing from the outside of a ship with a sterilization material; a neutralizing agent storage tank neutralizing remaining chlorine of the ballast water; and a ballast tank storing the ballast water which is sterilized and neutralized. The neutralizing agent storage tank is installed in a cofferdam dividing an engine room and a hold of the ship.

Description

[0001] BALLAST WATER MANAGEMENT APPARATUS [0002]

The present invention relates to a ballast water treatment apparatus provided in a ship.

In general, the ballast tank of a ship is intended to minimize the variation of the center of gravity of the ship by the loading and unloading of the cargo to enable safe navigation. The seawater around the ship is ballast water, And the ballast water can be discharged from the ballast tank to the outside of the ship.

However, the ballast water used for safe operation of the ship has a problem that it becomes a medium for propagating the organisms or pathogens in a specific sea area to other sea areas.

That is, the ballast water to be filled in the ballast tank may include various marine life and pathogens. Since the inflow and outflow of the ballast water occur in different areas, Leaking organisms or pathogens into other waters will cause side effects that disturb the environment and the ecosystem.

Accordingly, the International Maritime Organization (IMO) is required to deal with marine organisms or pathogens contained in ballast water when the ballast water is leaked from ships through international protocols, and it is imperative to install a ballast water treatment system in the vessel Which will be implemented in the future.

Therefore, in addition to the newbuilding that is newly constructed, the existing ship also needs a ballast water treatment system. However, there is a problem that it is not easy to secure a space for installing the equipment constituting the ballast water treatment system in the ship.

In particular, since existing ships do not have a ballast water treatment system, it is necessary to newly retrofit the existing ballast water treatment system through retrofitting of existing facilities. Already, various equipments and passageways are arranged in the vessel There is a great difficulty in securing sufficient space for newly installing the equipment constituting the ballast water treatment system.

Particularly, when the ballast water stored in the ship is discharged to the sea, the ballast water neutralizing device of the ship which neutralizes the residual chlorine of the ballast water to prevent marine pollution is installed in the pump installation space, There is an attempt to use space efficiently because it is difficult.

The ballast water treatment apparatus according to an embodiment of the present invention is characterized in that the structure of the partition wall for distinguishing between the engine room and the cargo hold is changed and the neutralization agent storage tank is inserted into the partition wall to treat the ballast water that can utilize a narrow space of the engine room Device.

A ballast water treatment apparatus according to an embodiment of the present invention includes a sterilizing device for sterilizing ballast water introduced from the outside of a ship with a sterilizing material, a neutralizing agent storage tank for neutralizing the residual chlorine of the ballast water, Wherein the neutralizer storage tank is installed in a cofferdam for partitioning the engine room of the ship and the cargo hold.

The cofferdams may include two opposing partitions.

The partition walls of the coffer dam may be spaced from each other to form a space.

The one partition wall of the coffer dam may protrude toward the other partition wall of the coffer dam.

The one partition wall of the coffer dam may protrude from the engine room toward the cargo hold.

The neutralizer storage tank may be disposed in a space between the tank top of the ship and the secondary deck above the tank top.

The sterilizing device may be disposed in a space between the upper deck of the vessel and the secondary deck below the upper deck.

The sterilization apparatus may sterilize the ballast water by any one of electrolysis, ultraviolet sterilization, and ozone sterilization.

The sterilization apparatus may include an electrolysis unit for producing sterilizing material using brine.

By the ballast water treatment apparatus according to the embodiment of the present invention, the structure of the partition wall separating the engine room and the cargo hold of the ship is changed to a double wall and a storage space is formed. By disposing the neutralization agent storage tank in the storage space, And can be used efficiently.

FIG. 1 is a conceptual diagram showing a ship ballast water treatment apparatus showing a seawater treatment process when seawater is introduced into a ship.
2 is a view schematically showing a configuration of a ballast water treatment apparatus equipped with a neutralizing agent storage tank according to an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily carry out the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. In order to clearly illustrate the present invention, parts not related to the description are omitted, and the same or similar components are denoted by the same reference numerals throughout the specification.

FIG. 1 is a conceptual diagram showing a ship ballast water treatment apparatus showing a seawater treatment process when seawater is introduced into a ship.

1, the ballast water treatment apparatus generally includes a ballast pipe 12, a ballast tank 18, a ballast pump 11, a filter 13, a sterilizing device 15, and a neutralizer storage tank 19, .

That is, the seawater flowing outside the ship, which has flowed through the sea chest 17, is subjected to a pretreatment process in which the foreign substances are firstly removed through the filter 13, and secondly, the seawater is sterilized by the sterilizing device 15 The various marine organisms and pathogens contained therein are removed and then stored in the ballast tank 18.

In this case, the ballast piping 12 is a pipeline in which seawater outside the ship flows into the ballast tank 18 as ballast water.

Also, the ballast tank 18 is a space in which the ballast water is stored, and a plurality of ballast tanks 18 may be provided in the vessel.

On the other hand, the ballast pump 11 may be installed in the ballast pipeline 12, and the ballast pipeline 12 may be provided with the seawater flowing into the ballast pipeline 12 A filter 13 for filtering foreign substances may be provided.

At this time, even if foreign matter is primarily removed through the filter 13, it is not possible to remove various marine organisms and pathogens contained in the ballast water. Therefore, a sterilization treatment means is required in the ballast water treatment apparatus.

At this time, as the means for sterilizing the ballast water, an electrolytic apparatus, which is a device for producing hypochlorous acid which is a sterilizing material by electrolyzing the salt water, may be included in the sterilizing apparatus 15.

The sterilizing device 15 is an electrolysis device including an electrolysis unit capable of sterilizing the ballast water by any one of electrolysis, ultraviolet sterilization and ozone sterilization, Device.

The electrolytic device can be made in such a way that electricity is supplied to the electrodes and the ballast water is passed between the electrodes. The electrolytic apparatus has an advantage of excellent sterilization effect and continuous sterilization. The electrolytic apparatus includes an electrode part made of a metal titanium electrode. Hypochlorous acid is generated in the anode through an electrolysis process using a current supplied from the rectifying part. In the anode, hydrogen (H ₂ ), which is a by- , Chlorine gas (Cl), and the like are produced.

The hypochlorous acid produced in the electrolytic apparatus has a strong sterilizing power, and the pathogen contained in the incoming seawater can be removed below the reference value. In particular, hypochlorous acid has the advantage of being environmentally friendly as well as sterilizing power and without pollution. When hypochlorous acid is contacted with bacteria, it is reduced to water immediately after sterilization, so that the chlorine component does not remain in the seawater.

However, if excess hypochlorous acid is produced, hypochlorous acid may not be reduced and may remain in the ballast water. At this time, if it is discharged to the ocean without any treatment, the ecosystem is adversely affected, and thus the residual chlorine in the ballast water is reduced by the liquid neutralizing agent sprayed from the neutralizing agent storage tank 19.

2 is a view schematically showing a configuration of a ballast water treatment apparatus equipped with a neutralizing agent storage tank according to an embodiment of the present invention.

2, the neutralizer storage tank 19 is installed in a cofferdam (7) for partitioning the engine room 5 and the cargo hold 8 of the ship. The coffer dam (7) includes two opposing partitions, and the partitions of the coffer dam (7) are spaced apart from each other to form a space.

One partition wall of the coffer dam 7 protrudes toward the other partition wall of the cofferdam 7 and one partition wall of the cofferdam 7 protrudes from the engine room 5 toward the cargo hold 8 Respectively.

On the other hand, the neutralizing agent storage tank 19 can be disposed in the space between the tank top 4 of the vessel and the secondary deck 3 above the tank top 4, And can be inserted and arranged in the space of the surface.

On the other hand, the sterilizing device 15 may be disposed in a space between the upper deck 2 of the ship and the secondary deck 3 below the upper deck 2. [

When the ballast water flows into the ship, seawater flows in from the shipchest 17, and the ballast water is introduced into the sterilizing device 15 through the ballast pipe 11 and the pretreatment device 13 (filter) through the ballast pipe 12 . The ballast water that has entered the sterilizing device 15 through the first branch pipe 16-1 flows into the ballast tank 18 from the sterilizing device 15 through the second branch pipe 16-2. The harmful pathogens are removed from the sterilizing device 15 at a level lower than the reference value and then sent to the ballast tank 18.

When the ballast water is discharged from the ship, the ballast water is sent to the neutralizing agent storage tank 19 in order to reduce residual chlorine in the ballast water discharged from the ballast tank 18. The ballast water flows from the ballast tank 18 to the neutralizing agent storage tank 19 through the third branch pipe 21 and flows from the neutralizing agent storage tank 19 through the fourth branch pipe 22 to the ballast pipe 12 And is discharged to the sea through the body strut 17 connected to the ballast pipe 12.

A neutralizing agent that reacts with the chlorine component in the neutralizing agent storage tank 19 may be added to the ballast water to remove the chlorine component remaining in the ballast water. Such neutralizing agents include ascorbic acid, sodium sulfite, sodium hydrogen sulfite, sodium bisulfite, and sodium thiosulfate. These neutralizers are solid at room temperature, but when applied to ship ballast water treatment systems, they are dissolved in water and put into the ballast water of the ship as a solution. When such a neutralizing agent is supplied on a line, it is possible to apply a method of preparing a solution in advance and a method of supplying a solution in a solid state and preparing a solution when necessary on a ship.

As described above, in the ballast water treatment apparatus according to the embodiment of the present invention, the structure of the partition wall separating the engine room and the cargo hold of the ship is changed to a double wall and a storage space is formed. By disposing a neutralizing agent storage tank in the storage space, Can be efficiently used.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, And it goes without saying that the invention belongs to the scope of the invention.

5: engine room 8: cargo hold
11: Ballast pump 12: Ballast piping
13: filter 15: sterilizing device
17: Chastest 18: Ballast tank
19: Neutralizing agent storage tank

Claims

A sterilizing device for sterilizing the ballast water introduced from the outside of the ship with a sterilizing material;
A neutralizer storage tank for neutralizing the residual chlorine of the ballast water; And
And a ballast tank for storing the sterilized and neutralized ballast water,
Wherein the neutralizer storage tank is installed in a cofferdam for partitioning the engine room and the cargo hold of the ship.

The method of claim 1,
Wherein the coffer dam comprises two opposed bulkheads.

3. The method of claim 2,
Wherein the partition walls of the coffer dam are spaced apart from each other to form a space.

4. The method of claim 3,
Wherein the one partition wall of the coffer dam is protruded toward the other partition wall of the coffer dam.

5. The method of claim 4,
Wherein the one partition wall of the coffer dam is protruded from the engine room toward the cargo hold.

The method of claim 1,
Wherein the neutralizer storage tank is disposed in a space between a tank top of the ship and a secondary deck on the top of the tank top.

The method of claim 1,
Wherein the sterilizing device is disposed in a space between an upper deck of the vessel and a second deck below the upper deck.

The method of claim 1,
Wherein the sterilizing apparatus sterilizes the ballast water by any one of electrolysis, ultraviolet sterilization, and ozone sterilization.

3. The method of claim 2,
Wherein the sterilizing apparatus includes an electrolysis unit for generating a germicidal material using salt water.