KR102367677B1 - Apparatus and method for retreatment of ballast water - Google Patents

Abstract

The present invention relates to an apparatus and method for retreating ballast water. According to the present invention, the apparatus for retreating ballast water comprises: a ballast tank storing seawater introduced through a seawater inlet of a ship through a pump; a filtering means installed between the seawater inlet and the ballast tank, and filtering the seawater introduced into the ballast tank; and a sterilizing means installed between the filtering means and the ballast tank and sterilizing the seawater filtered through the filtering means. The filtering means is able to filter the seawater introduced from the seawater inlet into the ballast tank in case of ballasting work, and re-filter the seawater discharged from the ballast tank to a seawater outlet of the ship in case of deballasting work. Since the ballast water is discharged to the outside of the ship after being re-filtered through the filtering means in case of deballasting work, the microorganism destruction efficiency can be increased by meeting the strengthened ballast water discharge criteria.

Description

Apparatus and method for retreatment of ballast water

The present invention relates to a ballast water reprocessing apparatus and method for reprocessing and discharging ballast water to the outside of a ship in a de-ballasting process.

In general, cargo ships transported by sea operate one-way, except for ships that travel round-trip for mutual exchange of similar cargo. In addition, when returning voyage after voyage in a full state for one-way operation, ballast water is introduced into the ship to improve the balance, safety and steering performance of the ship, and the voyage is performed in the ballast state.

At this time, the ballast water is filled in one port through a ballasting operation and transferred to another place, and discharged into a new port through a deballasting operation. As such, the release of marine organisms and pathogens contained in the ballast water transported from a distant location is not only harmful to the new environment, but also can be dangerous to both humans and animals in the new port.

The introduction of non-natural marine life into a new ecosystem can have devastating effects on native flora and fauna that may not have natural defenses against the new species. In addition, harmful bacterial pathogens such as cholera may be present in the original harbor. These pathogens can multiply in the ballast tanks over time and cause disease in the area where they are released.

In order to eliminate the risk posed by these marine organisms and pathogens, the International Maritime Organization (IMO) is stipulating the discharge conditions for ballast water, that is, ballast water, through the "Ship Ballast Water Management Convention". Also, in the case of the United States, the United States Coast Guard (USCG) standards are presented according to their own laws, separate from the IMO's ballast water management agreement, and all ships entering US ports must comply with the USCG regulations. Recently, USCG announced the strengthened "VIDA rule" standard in relation to ballast water discharge regulation, which includes content that is 100 to 1,000 times stronger than the existing ballast water treatment standard.

In order to meet these ballast water discharge standards, in general, ballast water sterilization treatment is performed using a ballast water treatment system (BWMS) during ballasting work or deballasting work. Here, the ballast water treatment method is largely divided into a physical method and a chemical method.

Representative physical treatment methods include UV (ultraviolet rays) sterilization method, heat sterilization method, ultrasonic sterilization method, and the like. And, if necessary, it is possible to increase the microbial treatment effect by using a filter.

In the case of the chemical treatment method, direct injection of chemicals or generation of an oxidizing agent through electrolysis to sterilize the ballast water is typical. In addition, the ballast water can be chemically treated with chlorine, chlorine dioxide, ozone, hydrogen peroxide and other organic chemicals. This chemical treatment method can also use a filter if necessary to increase the microbial treatment effect.

However, all of the above-described physical/chemical treatment methods adopt a method of filtering ballast water using a filter only in the ballasting process of a ship. Accordingly, there is a problem that the ballast water filled in the ship may contain specific microorganisms that are not completely removed during the ballasting process, and the ballast water containing these microorganisms may be discharged into the sea as it is during the deballasting process.

Prior Art Document 1: Korean Patent Registration No. 10-1689695 (Notice on Dec. 26, 2016)

Prior Art Document 2: Korean Patent Publication No. 10-2014-0108740 (published on September 12, 2014)

The present invention was invented to solve the above problems, and after re-filtering the ballast water stored in the ballast tank during the deballasting operation, discharge it to the outside of the ship to improve the microbial removal efficiency. The purpose is to provide a method.

In order to achieve the above object, the present invention is a ballast tank for storing the ballast water introduced from the seawater inlet of the ship through the pump; a filtering means installed between the seawater inlet and the ballast tank and filtering the ballast water flowing into the ballast tank; and a sterilizing means installed between the filtering means and the ballast tank and sterilizing the ballast water filtered through the filtering means, wherein the filtering means flows from the seawater inlet to the ballast tank side during the ballasting operation It is characterized in that the ballast water is filtered, and the ballast water discharged from the ballast tank to the seawater outlet of the ship is re-filtered during the deballasting operation.

According to an alternative embodiment of the present invention, the ballast tank for storing the ballast water introduced from the seawater inlet of the ship through the pump; a sterilization means installed between the seawater inlet and the ballast tank and sterilizing the ballast water flowing into the ballast tank; and a filtering means installed between the sterilizing means and the ballast tank and filtering the sterilized ballast water through the sterilizing means, wherein the filtering means flows into the ballast tank side from the seawater inlet during the ballasting operation It is characterized in that the ballast water is filtered, and the ballast water discharged from the ballast tank to the seawater outlet of the ship is re-filtered during the deballasting operation.

Preferably, the seawater inlet, the pump, the filtration means, the sterilization means, and a ballasting flow passage leading to the ballast tank in this order; And the ballast tank, the pump, the filtering means, and characterized in that it comprises a deballasting flow path that continues in the order of the seawater outlet.

Alternatively, the seawater inlet, the pump, the sterilization means, the filtration means, and a ballasting flow passage leading to the ballast tank in this order; And the ballast tank, the pump, the sterilization means and characterized in that it comprises a deballasting flow path that continues in the order of the seawater outlet.

Additionally, it characterized in that it further comprises a reprocessing means for further killing microorganisms in the ballast water re-filtered through the filtration means during the deballasting operation.

Preferably, the reprocessing means allows the ballast water re-filtered through the filtering means to return to the ballast tank after being sterilized through the sterilizing means during the deballasting operation or without going through the sterilizing means. It is characterized in that it is returned back to the ballast tank.

More preferably, the reprocessing means stores the re-filtered ballast water through the filtration means in a bilge tank or a separate storage tank during the deballasting operation, then chemically sterilizes it and discharges it to the outside of the ship, It is characterized in that it is discharged to the outside of the ship without chemical sterilization, or disposed of or sterilized on land.

Preferably, the reprocessing means heats or pulverizes the re-filtered ballast water through the filtering means during the deballasting operation, and then discharges it to the outside of the ship.

More preferably, the reprocessing means separates the ballast water re-filtered through the filtration means during the deballasting operation from microorganisms through a centrifugal separator and a sieve, and then chemically in a bilge tank or a separate storage tank. Discharged to the outside of the ship by sterilization, discharged to the outside of the ship without chemical sterilization, or the ballast is stored in the bilge tank or a separate storage tank and then disposed of or sterilized on land.

Additionally, a neutralization device and a TRO measuring device are installed in the deballasting passage between the filtering means and the seawater outlet.

In addition, the present invention provides a method for reprocessing ballast water using the above-mentioned ballast water reprocessing apparatus, comprising the steps of: a) re-filtering the ballast water stored in the ballast tank during the deballasting operation by introducing the ballast water into the filtering means; b) re-processing by introducing the re-filtered ballast water through the filtration means into the re-treatment means; and c) discharging the reprocessed ballast water through the reprocessing means to the seawater outlet.

Preferably, in step b), the ballast water re-filtered through the filtering means is sterilized through the sterilization means and then returned to the ballast tank or returned to the ballast tank without going through the sterilization means. characterized in that

Here, in step b), the ballast water re-filtered through the filtering means is stored in a bilge tank or a separate storage tank and then chemically sterilized and discharged to the outside of the ship, or discharged to the outside of the ship without being chemically sterilized Or, it is characterized in that it is disposed of or sterilized on land.

Preferably, in step b), the seawater re-filtered through the filtering means is heated or pulverized and then discharged to the outside of the ship.

More preferably, in step b), the seawater re-filtered through the filtration means is separated from microorganisms through a centrifugal separator and a sieve, and then chemically sterilized in a bilge tank or a separate storage tank and discharged to the outside of the ship It is characterized in that it is discharged to the outside of the ship without being chemically sterilized, or disposed of or sterilized on land.

According to the present invention, since the seawater stored in the ballast tank, that is, the ballast water is discharged to the outside of the ship after being re-filtered through the filtration means during the deballasting operation, the efficiency of killing microorganisms can be increased in accordance with the reinforced ballast water discharge standard. there is.

In addition, according to the present invention, it is possible to further increase the efficiency of killing microorganisms by re-filtering the ballast water through the filtration means and further sterilizing it through the reprocessing means during the deballasting operation.

1 is a view schematically showing the configuration of a ballast water reprocessing apparatus according to the present invention;
2 is a view schematically showing another example of a ballast water reprocessing apparatus according to the present invention;
3 is a view schematically showing another example of a ballast water reprocessing apparatus according to the present invention;
4 is a view schematically showing another example of a ballast water reprocessing apparatus according to the present invention;
5 schematically shows an alternative example of a ballast water reprocessing apparatus according to the present invention;
6 is a flowchart schematically showing an example of a method for reprocessing ballast water according to the present invention;
7 is a flowchart schematically showing another example of a method for reprocessing ballast water according to the present invention.

Hereinafter, preferred embodiments of the apparatus and method for reprocessing ballast water according to the present invention will be described with reference to the accompanying drawings. For reference, in describing the present invention below, terms referring to the components of the present invention are named in consideration of the functions of each component, and thus should not be construed as limiting the technical components of the present invention. will be

1, the apparatus for reprocessing ballast water according to the present invention filters and sterilizes seawater flowing into the ballast tank 100 during the ballasting operation, that is, the ballast water, and the debalasting operation in the ballast tank ( 100), by re-filtering the stored ballast water and discharging it, it is a device that can improve the microbial removal efficiency.

Specifically, the present invention includes a ballast tank 100 , a filtering means 200 and a sterilizing means 300 .

The ballast tank 100 stores seawater introduced from the seawater inlet 10 (Over Board) of the ship through the pump 30 .

The filtering means 200 is installed between the seawater inlet 10 and the ballast tank 100 , and serves to filter the ballast water flowing into the ballast tank 100 . Here, the filtering means 200 may be configured to include at least one of a filter, a centrifugal separator, and a sieve. The filtering means 200 filters the ballast water flowing into the ballast tank 100 from the seawater inlet 10 during the ballasting operation, and the seawater outlet 10 of the ship from the ballast tank 100 during the deballasting operation. ) (Sea Chest) is configured to re-filter the discharged ballast water.

The sterilization means 300 is installed between the filtering means 200 and the ballast tank 100 , and serves to sterilize the seawater filtered through the filtering means 200 . Here, the sterilization means 300 generally refers to a ballast water treatment system (BWMS), and may be configured as a physical or chemical treatment system. For example, the physical sterilization means 300 may be composed of a UV (ultraviolet ray) sterilization system, a heat sterilization system, and an ultrasonic sterilization system. In addition, the chemical sterilization means 300 is, for example, chlorine, chlorine dioxide, ozone, hydrogen peroxide and other organic chemicals directly into the ballast water sterilization system, and electrolysis to generate an oxidizing agent through the ballast water It may be composed of an electrolysis device that sterilizes the

In addition, the ballast water reprocessing system according to the present invention is a D for discharging the ballast water of the ballast flow path (A) and the ballast tank 100 to the outside of the ship for performing the ballasting operation of filling the ballast tank 100 with seawater. It includes a deballasting flow path (B) for performing ballasting work.

The ballasting flow path A is shown by a solid line in the drawing, and has a seawater flow along the arrow direction included in the solid line. Here, the seawater inlet 10, the pump 30, the filtration means 200, the sterilization means 300, and the ballast tank 100 are sequentially arranged in the ballasting flow path (A) along the ballasting flow direction of seawater. .

The deballasting flow path B is shown as a dotted line in the drawing, and has a seawater flow along the arrow direction included in the dotted line. Here, in the deballasting flow path (B), the ballast tank 100 , the pump 30 , the filtering means 200 and the seawater outlet 20 are sequentially disposed along the deballasting flow direction of seawater.

With this configuration, the seawater stored in the ballast tank 100, that is, the ballast water, is re-filtered through the filtration means 200 during the deballasting operation and then discharged to the outside of the ship, so that the enhanced ballast water discharge standards are met. Accordingly, the efficiency of killing microorganisms can be increased. Moreover, without installing a separate filtration means, the filtration means 200 for filtering seawater flowing into the ship during ballasting work is connected to the deballasting flow path (B) to re-balast water during deballasting work. By using it for filtration, the structure of the apparatus can be simplified.

2 shows a preferred embodiment of a ballast reprocessing apparatus according to the present invention. Referring to FIG. 2 , the present invention may further include a reprocessing means for further killing microorganisms in seawater re-filtered through the filtration means 200 during the deballasting operation.

This reprocessing means serves to allow the seawater re-filtered through the filtration means 200 to return to the ballast tank 100 after being sterilized through the sterilization means 300 again during the deballasting operation ( see Fig. 4). To this end, the reprocessing means prevents the ballast water transferred from the ballast tank 100 to the filtering means 200 side from being directly transferred to the seawater outlet 20 side during the deballasting operation and at the same time is transferred to the sterilization means 300 side. and on/off valves (not shown). For example, a first on/off valve is installed between the filtering means 200 and the seawater outlet 20 , and another second on/off valve is installed between the filtering means 200 and the sterilizing means 300 . installed, the first on/off valve is closed and the second on/off valve is opened during the deballasting operation. Accordingly, the ballast water in the ballast tank 100 during the deballasting operation may be re-filtered by the filtration means 200 and then sterilized once again by the sterilization means 300 . And after a predetermined time elapses, the first on/off valve is opened, and the second on/off valve is closed so that the ballast water is discharged to the outside of the ship through the seawater outlet 20 .

By such a reprocessing means, it is possible to further increase the microbial killing efficiency of the ballast water by re-filtration and re-sterilization of the ballast water for a predetermined time during the deballasting operation.

On the other hand, the reprocessing means may allow the seawater re-filtered through the filtering means 200 to return to the ballast tank 100 without going through the sterilizing means 300 again during the deballasting operation.

3 shows another preferred embodiment of the ballast reprocessing apparatus according to the present invention. Referring to Figure 3, the reprocessing means is a separate tank 400, for example, a bilge tank or a storage tank to be stored in the re-filtered seawater, that is, the ballast water through the filtration means 200 during the deballasting operation. After this, the ballast water may be sterilized and configured to be discharged to the outside of the vessel. To this end, the reprocessing means includes a reprocessing passage C connecting the filtering means 200 and the tank 400 and means for chemically sterilizing the ballast water in the tank 400 . The chemical sterilization treatment means may be, for example, an electrolysis device or a chemical injection device. In addition, the reprocessing means is a discharge flow path (D) connecting the seawater outlet 20 and the tank 400 so that the chemically sterilized ballast water in the tank 400 is discharged to the outside of the ship through the seawater outlet 20. includes Here, the ballast water stored in the tank 400 may be disposed of or sterilized on land after the operation of the vessel is terminated. In addition, the reprocessing means may discharge the re-filtered ballast water through the filtration means 200 during the deballasting operation to the outside of the ship without chemically sterilizing it.

Alternatively, the reprocessing means may be configured to heat or pulverize the seawater refiltered through the filtration means 200 during the deballasting operation, that is, the ballast water, and then discharge it to the outside of the ship. To this end, the reprocessing means may include a boiling device for heating and sterilizing the ballast water or a crushing device for pulverizing the ballast water.

Also, alternatively, the reprocessing means separates the microbes in the seawater re-filtered through the filtration means 200, that is, the ballast water during the deballasting operation, and then sterilizes the ballast water in a bilge tank or a separate storage tank. It may be configured to discharge to the outside of the ship. To this end, the reprocessing means may centrifuge the re-filtered ballast water in the filtering means 200, including a centrifugal separator and a sieve, to separate it from microorganisms. In addition, the reprocessing means may include a chemical sterilization treatment device such as a chemical injection device or an electrolysis device to sterilize the ballast water that has passed through the centrifugal separator and the sieve. The treated ballast water may be discharged to the outside of the ship through the seawater outlet 20 or disposed of or sterilized on land after the operation of the ship is finished. In addition, the reprocessing means may discharge the ballast water that has passed through the centrifugal separator and the sieve to the outside of the ship without sterilizing treatment.

In this way, the ballast water reprocessing apparatus according to the present invention re-filters and re-sterilizes the ballast water during the deballasting operation and discharges it to the outside of the ship, thereby greatly improving the efficiency of killing microorganisms in accordance with the reinforced ballast water discharge standard. can do it

Additionally, the post-treatment means 500 may be installed in the deballasting flow path B between the filtering means 200 and the seawater outlet 20 . The post-treatment means 500 may include a TRO measuring device for measuring the oxidizing agent concentration of the ballast water discharged to the outside of the ship, and a neutralizing device for neutralizing the ballast water according to the measurement result of the TRO measuring device.

On the other hand, as shown in FIG. 5 , the ballast water reprocessing apparatus according to the present invention is installed at the rear end of the sterilization means 300 , that is, upstream of the ballast tank 100 , and the ballast flowing into the ballast tank 100 . and may be configured to filter the water.

Accordingly, the seawater inlet 10 , the pump 30 , the sterilization means 300 , the filtering means 200 and the ballast tank 100 are sequentially arranged along the ballasting flow direction of the seawater in the ballasting flow path (A) do. And, in the deballasting flow path (B), the ballast tank 100, the pump 30, the sterilization means 300, the filtration means 200 and the seawater outlet 20 are sequentially arranged along the deballasting flow direction of seawater. are placed

Hereinafter, an operation method of the ballast water reprocessing apparatus according to the present invention will be described with reference to the accompanying drawings.

First, when the deballasting operation is started to discharge the ballast water in the ballast tank 100 to the outside of the ship, the ballast water in the ballast tank 100 flows into the filtration means 200 along the deballasting flow path (B). do. The ballast water is then re-filtered by the filtering means 200 and treated (step a).

Then, the seawater re-filtered through the filtering means 200, that is, the ballast water is re-treated by the re-treatment means to be further sterilized (step b).

Referring to FIG. 6 , in this additional sterilization treatment step, the ballast water re-filtered through the filtering means 200 is sterilized through the sterilization means 300 and then returned to the ballast tank 100 again. Specifically, when the deballasting operation starts (S10), the first on/off valve is closed between the filtering means 200 and the seawater outlet 20, and between the filtering means 200 and the sterilizing means 300 Another second on/off valve is opened (S20). When the pump 30 is operated in this state, the ballast water in the ballast tank 100 is re-filtered through the filtration means 200 (S30), flows into the sterilization means 300, and is additionally sterilized after the ballast tank ( 100) (S40). And after a predetermined time elapses, the first on/off valve is opened, and the second on/off valve is closed (S50). Then, the ballast water of the ballast tank 100 may be discharged to the outside of the ship through the seawater outlet 20 (S60).

7, in the additional sterilization treatment step, the seawater re-filtered through the filtration means 200, that is, the ballast water is stored in a separate tank 400, for example, a bilge tank or a storage tank, and then sterilized to ship can be discharged outside. Specifically, when the deballasting operation is started (S11), the ballast water in the ballast tank 100 is introduced into the filtration means 200 along the deballasting flow path (B) and re-filtered through the filtration means 200 becomes (S21). Subsequently, the re-filtered ballast water is transferred to a separate tank 400 , and chemically sterilized in this tank 400 ( S31 ). Here, the chemical sterilization treatment means may be, for example, an electrolysis device or a chemical injection device. When the chemical sterilization treatment in the tank 400 is completed, the ballast water in the tank 400 is transferred along the discharge flow path D and discharged to the outside of the ship through the seawater discharge port 20 (S41). Alternatively, the ballast water transferred into the tank 400 is not sterilized during the operation of the vessel, and may be sterilized on land after the operation of the vessel is finished (S32).

Alternatively, in the further sterilization treatment step, the seawater re-filtered through the filtering means 200 may be heated by the heat sterilization device or crushed by the crushing device and then discharged to the outside of the vessel.

Also, alternatively, in the additional sterilization treatment step, the seawater re-filtered through the filtering means 200 is separated from microorganisms through a centrifugal separator and a sieve, and then chemically sterilized in a bilge tank or a separate storage tank to ship It can be discharged to the outdoors or sterilized on land.

As described above, according to the method for reprocessing the ballast water according to the present invention, the ballast water is re-filtered and re-sterilized during the deballasting operation, and then discharged to the outside of the ship, thereby killing microorganisms in accordance with the enhanced ballast water discharge standard. The efficiency can be greatly improved.

The embodiments of the present invention described above are merely illustrative of the technical idea of the present invention, and the protection scope of the present invention should be interpreted by the following claims. In addition, various modifications and variations will be possible without departing from the essential characteristics of the present invention by those of ordinary skill in the art to which the present invention pertains. It should be interpreted as being included in the scope of rights.

10: sea water inlet 20: sea water outlet
30: pump 100: ballast tank
200: filtration means 300: sterilization means
400: bilge tank or storage tank 500: after-treatment unit
A: Ballasting Euro B: Deballasting Euro
C: reprocessing flow path D: discharge flow path

Claims (15)

a ballast tank for storing the ballast water introduced from the seawater inlet of the ship through the pump;
It is installed between the seawater inlet and the ballast tank, filters the ballast water flowing into the ballast tank from the seawater inlet during ballasting work, and is discharged from the ballast tank to the seawater outlet of the ship during deballasting work filtration means for re-filtering the ballast water;
a sterilization means installed between the filtering means and the ballast tank and sterilizing the ballast water filtered through the filtering means; and
A re-treatment means for further killing and treating microorganisms in the ballast water re-filtered through the filtration means during the deballasting operation,
The reprocessing means separates the re-filtered ballast water through the filtration means from the microorganisms through a centrifugal separator and a sieve during the deballasting operation, and then chemically sterilizes it in a bilge tank or a separate storage tank to sterilize the outside of the ship Ballast water reprocessing device, characterized in that the discharge to the outside of the ship without chemical sterilization treatment, or the discharge or sterilization treatment on land after storing the ballast in the bilge tank or a separate storage tank.
a ballast tank for storing the ballast water introduced from the seawater inlet of the ship through the pump;
a sterilizing means installed between the seawater inlet and the ballast tank and sterilizing the ballast water flowing into the ballast tank;
Installed between the sterilization means and the ballast tank, the ballast water flows into the ballast tank from the seawater inlet during the ballasting operation and filters the sterilized ballast water through the sterilization means, and the ballast tank during the deballasting operation a filtration means for re-filtering the ballast water discharged from the seawater outlet side of the ship and sterilized through the sterilization means; and
A re-treatment means for further killing and treating microorganisms in the ballast water re-filtered through the filtration means during the deballasting operation,
The reprocessing means separates the re-filtered ballast water through the filtration means from the microorganisms through a centrifugal separator and a sieve during the deballasting operation, and then chemically sterilizes it in a bilge tank or a separate storage tank to sterilize the outside of the ship Ballast water reprocessing device, characterized in that the discharge to the outside of the ship without chemical sterilization treatment, or the discharge or sterilization treatment on land after storing the ballast in the bilge tank or a separate storage tank.
According to claim 1,
the seawater inlet, the pump, the filtration means, the sterilization means, and a ballasting flow path that continues in the order of the ballast tank; and
The ballast water reprocessing apparatus, characterized in that it comprises a deballasting flow path that continues in the order of the ballast tank, the pump, the filtering means and the seawater outlet.
3. The method of claim 2,
The seawater inlet, the pump, the sterilization means, the filtration means, and a ballasting flow passage leading to the ballast tank in this order; and
The ballast water reprocessing apparatus, characterized in that it comprises a deballasting flow path that continues in the order of the ballast tank, the pump, the sterilization means and the seawater outlet.
According to claim 1,
The reprocessing means allows the ballast water re-filtered through the filtration means to return to the ballast tank after being sterilized through the sterilization means during the deballasting operation or back to the ballast tank without going through the sterilization means Ballast water reprocessing device, characterized in that to return.
According to claim 1,
The reprocessing means stores the re-filtered ballast water through the filtration means in a bilge tank or a separate storage tank during deballasting work, and then chemically sterilizes it and discharges it to the outside of the ship, or does not chemically sterilize it. Ballast water reprocessing device, characterized in that it is discharged to the outside of the ship without being discharged, or disposed of or sterilized on land.
According to claim 1,
The reprocessing means, ballast water reprocessing apparatus, characterized in that for discharging the ballast water to the outside of the ship after heating or pulverizing the re-filtered ballast water through the filtering means during the deballasting operation.
5. The method according to claim 3 or 4,
Ballast water treatment device, characterized in that the neutralization device and the TRO measuring device is installed in the deballasting flow path between the filtering means and the seawater outlet.
A method for reprocessing ballast water using the apparatus for reprocessing ballast water according to claim 1 or 2,
a) re-filtering by introducing the ballast water stored in the ballast tank into the filtration means during the deballasting operation;
b) re-processing by introducing the re-filtered ballast water through the filtration means into the re-treatment means; and
c) discharging the reprocessed ballast water through the reprocessing means to the seawater outlet.
10. The method of claim 9,
In step b), the ballast water re-filtered through the filtering means is sterilized through the sterilization means and then returned to the ballast tank or returned to the ballast tank without going through the sterilization means. ballast water reprocessing method.
10. The method of claim 9,
In step b), the ballast water re-filtered through the filtration means is stored in a bilge tank or a separate storage tank and then chemically sterilized and discharged to the outside of the ship, or discharged to the outside of the ship without being chemically sterilized, A method for reprocessing ballast water, characterized in that it is disposed of or sterilized on land.
10. The method of claim 9,
In step b), the seawater re-filtered through the filtering means is heated or pulverized and then discharged to the outside of the ship.
10. The method of claim 9,
In step b), the seawater re-filtered through the filtration means is separated from microorganisms through a centrifugal separator and a sieve, and then chemically sterilized in a bilge tank or a separate storage tank and discharged to the outside of the ship, or chemically sterilized Ballast water reprocessing method, characterized in that it is discharged to the outside of the ship without being treated, or disposed of or sterilized on land. delete delete

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