KR20170050714A

KR20170050714A - System for treating ballast water

Info

Publication number: KR20170050714A
Application number: KR1020150152587A
Authority: KR
Inventors: 김만수; 전상익; 조태민; 최충영
Original assignee: 삼성중공업 주식회사
Priority date: 2015-10-30
Filing date: 2015-10-30
Publication date: 2017-05-11

Abstract

The ballast water treatment system according to an embodiment of the present invention includes a ballast tank for storing seawater outside the vessel inside the vessel and an electrolytic sterilizing solution using seawater stored in the ballast tank, And a sterilization unit for discharging the electrolytic sterilization liquid into the ballast tank.

Description

[0001] SYSTEM FOR TREATING BALLAST WATER [0002]

The present invention relates to a ballast water treatment system.

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 so as to enable safe navigation. The seawater around the ship enters the ballast tank as ballast water, Ballast water can be discharged from the 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) requires internationally recognized procedures to treat marine organisms or pathogens contained in ballast water when the ballast water is leaked from ships.

At this time, in order to sterilize the ballast water of a ship, recently, it has been proposed to use a sterilizing material such as hypochlorous acid (HClO or ClO-) generated through an electrolysis reaction of salt water, A decomposition type ballast water treatment system has been applied.

Based on the technical background as described above, the present invention provides a ballast water treatment system capable of reducing installation space in a ship.

A ballast water treatment system according to an embodiment of the present invention includes a ballast tank for storing seawater outside the vessel inside the vessel and an electrolytic sterilizing liquid located inside the ballast tank using seawater stored in the ballast tank And discharging the electrolytic sterilizing liquid into the ballast tank.

The sterilizing unit may include a body, a seawater inlet formed on the first side of the body for receiving the seawater stored in the ballast tank, and a second side formed on the body for discharging the electrolytic sterilizing liquid into the ballast tank And a second outlet for delivering the first fluid.

An electrolytic unit for electrolyzing the seawater introduced through the seawater inlet to produce the electrolytic sterilizing liquid may be disposed inside the body.

The body may further include a hydrogen separator for separating hydrogen gas from the electrolytic sterilizing solution produced by the electrolyzer.

And the hydrogen gas may flow out into the ballast tank through the first outlet.

And a second outlet through which the hydrogen gas flows out may be further formed on the third side of the body.

The hydrogen gas flowing out through the second outlet may be discharged to the outside of the ship through a ballast outlet through which seawater flows out of the ballast tank.

A seawater control valve for controlling the inflow amount of the seawater may be disposed at the seawater inlet.

And a ballast pump for introducing the seawater into the ballast tank.

And a filter for filtering the seawater introduced by the ballast pump.

According to the ballast water treatment system as described above, the space occupied by the ballast water treatment system in the ship can be reduced.

1 is a simplified illustration of a ballast water treatment system in accordance with an embodiment of the present invention.
Fig. 2 is a view showing a structure of the ballast tank of Fig. 1. Fig.
3 is a view showing the internal structure of the sterilizing unit of Fig.
4 is a view showing a first modification of the sterilizing unit.
5 is a view showing a second modification of the sterilizing unit.
6 is a view showing the internal structure of the sterilizing unit of Fig.
7 is a view showing a third modification of the sterilizing unit.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings, which will be readily apparent to those skilled in the art to which the present invention pertains. The present invention may be embodied in many different forms and is not limited to the embodiments described 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.

In addition, since the sizes and thicknesses of the respective components shown in the drawings are arbitrarily shown for convenience of explanation, the present invention is not necessarily limited to those shown in the drawings.

In the drawings, the thickness is enlarged to clearly represent the layers and regions. In the drawings, for the convenience of explanation, the thicknesses of some layers and regions are exaggerated. Whenever a portion such as a layer, film, region, plate, or the like is referred to as being "on" or "on" another portion, it includes not only the case where it is "directly on" another portion but also the case where there is another portion in between.

Also, throughout the specification, when an element is referred to as "including" an element, it is understood that the element may include other elements as well, without departing from the other elements unless specifically stated otherwise. Also, throughout the specification, the term "on " means to be located above or below a target portion, and does not necessarily mean that the target portion is located on the image side with respect to the gravitational direction.

Also, in the entire specification, when it is referred to as "planar ", it means that the object portion is viewed from above, and when it is called" sectional image, " this means that the object portion is viewed from the side.

Hereinafter, a ballast water treatment system according to an embodiment of the present invention will be described with reference to FIGS. 1 to 3. FIG.

FIG. 1 is a view schematically showing a ballast water treatment system according to an embodiment of the present invention, FIG. 2 is a view showing the structure of the ballast tank of FIG. 1, Fig.

1 to 3, the ballast water treatment system according to the present embodiment is characterized in that seawater, that is, ballast water introduced from the outside of the ship is introduced into the ballast tank 300 provided in the ship, And includes a ballast pipe 500, a ballast pump 100, a filter 200, a ballast tank 300, and a sterilizing unit 400. The ballast tank 500 includes a ballast tank 300 and a sterilizing unit 400.

The ballast pipe (500) is a pipe for moving the seawater introduced from the outside of the ship to the ballast tank (300).

The ballast tank 300 may be located at one end of the ballast pipe 500 and may include a plurality of tanks in the vessel as a space for storing the ballast water.

The ballast pump 100 may be installed in the ballast pipe 500 as a facility for introducing seawater from the outside of the ship and for supplying the seawater to the ballast tank 300. Meanwhile, the ballast pipe 500 may be provided with a filter 200 capable of filtering out foreign matter from the seawater flowing into the ballast pipe 500.

Referring to FIG. 2, a sterilization unit 400 may be disposed in the ballast tank 300 to produce an electrolytic sterilizing liquid containing a sterilizing material. The sterilizing unit 400 may produce an electrolytic sterilizing liquid containing a sterilizing material by using a part of seawater stored in the ballast tank 300. Then, the sterilizing unit 400 discharges the produced electrolytic sterilizing liquid again into the ballast tank 300.

Thus, if the sterilizing unit 400 is disposed inside the ballast tank 300, a separate space for installing the sterilizing unit 400 is not required. Thus, the size of the ballast water treatment system can be reduced.

According to the present embodiment, the ballast water flowing through the ballast pipe 500 flows into the ballast tank 300 through the ballast inlet 310 of the ballast tank 300. The ballast water stored in the ballast tank 300 may be discharged to the outside of the ship through the ballast outlet 330.

3, the sterilizing unit 400 disposed in the ballast tank 300 may include an electrolysis section 481 and a hydrogen separation section 482. [

The electrolysis unit 481 is located inside the body 470 of the sterilizing unit 400 and electrolyzes the seawater introduced into the seawater inlet 410 to electrolyze the electrolytic sterilization liquid containing sodium hypochlorite (NaOCl) .

At this time, the electrolytic unit 481 produces sodium hypochlorite (NaOCl), which is a germicidal substance, through the salt (NaCl) contained in the seawater by an electrolysis method. The electrolytic disinfecting liquid containing the sterilizing material sodium hypochlorite (NaOCl) contains hydrogen gas generated in the electrolysis reaction. The hydrogen gas is explosive and needs to be separated from the electrolytic sterilizing liquid.

According to the present embodiment, the hydrogen separating section 482 is connected to the electrolytic section 481, and can separate the hydrogen gas from the electrolytic sterilizing liquid produced in the electrolytic section 481. For example, the hydrogen separator 482 may include a cyclone separator that separates liquid and gas by a cyclone method. The cyclone separator is widely used in industry, and a wet cyclone separator or a gas-liquid separation cyclone separator can be applied.

When the cyclone separator is applied as an example of the hydrogen separating unit 482, only the liquid, that is, the electrolytic sterilizing liquid drops downward due to the centrifugal force, and then moves back into the ballast tank 300 through the pipe connected to the lower portion .

The gas having a specific gravity relatively smaller than that of the liquid, that is, the hydrogen gas is separated from the electrolytic sterilizing liquid by centrifugal separation and then discharged from the hydrogen separating section 482 through the hydrogen gas piping connected to the upper part.

According to the present embodiment, the electrolytic sterilizing liquid and the hydrogen gas separated in the hydrogen separating unit 482 can be discharged into the ballast tank 300 through the first outlet 430.

When the electrolytic sterilizing liquid is discharged into the ballast tank 300, the electrolytic sterilizing liquid can sterilize various marine organisms and pathogens contained in the ballast water.

In the following, a first modification of the sterilizing unit 400 included in the ballast water treatment system according to the embodiment of the present invention will be described with reference to FIG. In the description of the first modification, the detailed description of the same configuration as the above-mentioned embodiment will be omitted.

4 is a view showing a first modification of the sterilizing unit.

4, a seawater control valve 440 may be disposed in the seawater inlet 410 of the sterilizing unit 400 to control the amount of seawater flowing into the sterilizing unit 400.

The seawater control valve 440 can control the inflow amount of the seawater flowing in accordance with the sterilization state of the ballast water in the ballast tank 300. For example, when the concentrations of marine organisms or pathogens of the ballast water in the ballast tank 300 are high, the seawater control valve 440 is opened so that the ballast water in the ballast tank 300 is discharged into the sterilizing unit 400 . On the contrary, when the concentration of the pathogen is low, the marine organisms of the ballast water block the seawater control valve 440 to block the ballast water in the ballast tank 300 from flowing into the sterilizing unit 400.

Thus, by regulating the operation of the seawater control valve 440, the sterilization unit 400 can be operated only when necessary to increase the operating efficiency of the sterilization unit 400.

5 and 6, a second modification of the sterilizing unit 400 included in the ballast water treatment system according to an embodiment of the present invention will be described below. In the following description of the second modification, the detailed description of the same configuration as the above-described modification will be omitted.

Fig. 5 is a view showing a second modification of the sterilizing unit, and Fig. 6 is a view showing the internal structure of the sterilizing unit of Fig.

Referring to FIG. 5, the body 470 of the sterilizing unit 400 is formed with a second outlet 450 for separately discharging hydrogen gas separated from the hydrogen separator 482. In the above-described embodiment, the hydrogen gas is discharged through the first outlet 430 together with the electrolytic sterilizing liquid separated in the hydrogen separator 482. However, in the second modification, the hydrogen gas may be discharged into the tank of the ballast tank 300 through the second outlet 450.

6, the electrolytic sterilizing liquid separated from the hydrogen separating unit 482 is discharged into the ballast tank 300 through the first outlet 430, and the hydrogen gas is discharged through the second outlet 450 to the ballast tank 300, (300).

Hereinafter, a third modification of the sterilizing unit 400 included in the ballast water treatment system according to the embodiment of the present invention will be described with reference to FIG. In describing the third modification, the detailed description of the same configuration as the above-described modification will be omitted.

7 is a view showing a third modification of the sterilizing unit.

7, the second outlet 450 of the sterilizing unit 400 and the ballast outlets 330 of the ballast tank 300 are connected to each other via a connection pipe 450.

At this time, the hydrogen gas separated by the hydrogen separator 482 may be discharged to the outside of the ballast tank 300 through the connection pipe 450. In the second modification, the hydrogen gas is discharged into the ballast tank 300 through the second outlet 450. However, in the third modification, the hydrogen gas is not discharged into the ballast tank 300, (Not shown).

In the ballast water treatment system according to the embodiment of the present invention, the sterilizing unit 400 is disposed inside the ballast tank 300, so that a separate space for installing the sterilizing unit 400 is not required. Thus, the size of the ballast water treatment system can be reduced.

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. Various modifications and variations are possible within the scope of the appended claims.

100 ballast pump
200 filters
300 ballast tank
310 Ballast Inlet
330 Ballast Outlet
400 sterilization unit
430 first outlet
450 second outlet
440 Seawater control valve
481 electrolysis unit
482 hydrogen separation unit
500 ballast piping

Claims

A ballast tank for storing seawater outside the vessel in the vessel; and
And a sterilizing unit located inside the ballast tank for producing an electrolytic sterilizing liquid by using seawater stored in the ballast tank and discharging the electrolytic sterilizing liquid into the ballast tank.

The method according to claim 1,
The sterilization unit includes:
Body;
A seawater inlet formed on the first side of the body for receiving the seawater stored in the ballast tank; And
And a first outlet formed on the second side of the body for discharging the electrolytic sterilization liquid into the ballast tank.

3. The method of claim 2,
Inside the body,
And an electrolytic unit for electrolyzing the seawater introduced through the seawater inlet to produce the electrolytic sterilizing liquid.

The method of claim 3,
Inside the body,
Further comprising a hydrogen separating portion for separating hydrogen gas from the electrolytic sterilizing solution produced by the electrolysis portion.

5. The method of claim 4,
And the hydrogen gas flows out into the ballast tank through the first outlet.

5. The method of claim 4,
And a second outlet through which the hydrogen gas flows out is formed on the third side of the body.

The method according to claim 6,
And the hydrogen gas flowing out through the second outlet is discharged to the outside of the ship through a ballast outlet through which seawater flows out from the ballast tank.

3. The method of claim 2,
And a seawater control valve for controlling the inflow amount of the seawater is disposed at the seawater inlet.

The method according to claim 1,
Further comprising a ballast pump for introducing said seawater into said ballast tank.

9. The method of claim 8,
Further comprising a filter for filtering the seawater introduced by the ballast pump.