KR20160112601A - Apparatus and method for treating ballast water - Google Patents

Apparatus and method for treating ballast water Download PDF

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Publication number
KR20160112601A
KR20160112601A KR1020150038627A KR20150038627A KR20160112601A KR 20160112601 A KR20160112601 A KR 20160112601A KR 1020150038627 A KR1020150038627 A KR 1020150038627A KR 20150038627 A KR20150038627 A KR 20150038627A KR 20160112601 A KR20160112601 A KR 20160112601A
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KR
South Korea
Prior art keywords
concentration
neutralizing agent
amount
ballast water
tro
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Application number
KR1020150038627A
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Korean (ko)
Inventor
이상건
Original Assignee
삼성중공업 주식회사
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Priority to KR1020150038627A priority Critical patent/KR20160112601A/en
Publication of KR20160112601A publication Critical patent/KR20160112601A/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B13/00—Conduits for emptying or ballasting; Self-bailing equipment; Scuppers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63J—AUXILIARIES ON VESSELS
    • B63J4/00—Arrangements of installations for treating ballast water, waste water, sewage, sludge, or refuse, or for preventing environmental pollution not otherwise provided for
    • B63J4/002—Arrangements of installations for treating ballast water, waste water, sewage, sludge, or refuse, or for preventing environmental pollution not otherwise provided for for treating ballast water
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
    • C02F2103/008—Originating from marine vessels, ships and boats, e.g. bilge water or ballast water

Abstract

A ballast water treatment apparatus and method are provided. The ballast water treatment apparatus comprises: a total residual oxidant (TRO) sensor which measures the concentration of a TRO contained in ballast water deballasted by injecting a neutralizing agent; a neutralization control part which determines the concentration or amount of the neutralizing agent to be injected on the basis of the measurement results; and a neutralizing device which injects the neutralizing agent according to the determined concentration or amount into the deballasted ballast water. Therefore, the present invention injects a proper amount of the neutralizing agent into the ballast water on the basis of the measurement results of the TRO sensor.

Description

[0001] Apparatus and method for treating ballast water [0002]

The present invention relates to an apparatus and method for treating ballast water.

The restoring force of the ship is determined by the interaction of gravity and buoyancy acting on the ship. If the ship is not tilted, gravity and buoyancy are present on the same line of action, and no force is generated. However, when the ship is tilted, gravity and buoyancy are present on different lines of action, resulting in a combined force of gravity and buoyancy, .

Here, the gravity is determined by the weight of the ship, and the buoyancy is determined by the volume of the ship submerged in seawater. In order to improve the restoring force, it is preferable to increase the buoyancy by increasing the volume of the ship submerged in seawater.

On the other hand, in the case of a ship carrying cargo, the volume of the ship submerged in seawater may be changed as the weight of the cargo is changed or the cargo is loaded or unloaded. In order to compensate, the ship may be equipped with a ballast water treatment apparatus .

The present invention relates to a ship equipped with a ballast water treatment apparatus.

Korean Patent Publication No. 10-2012-0062603 (June 14, 2012)

The ballast water treatment system is a system that recovers seawater and increases the weight of the ship or releases the incoming seawater to restore the weight of the ship. For example, if the cargo is unloaded, the ballast water treatment device can increase the weight of the ship by introducing seawater, and when the cargo is loaded, it can reduce the weight of the ship by discharging seawater to the ballast water treatment device. In this way, as the seawater is introduced or discharged depending on the situation, the total weight of the ship can be maintained to be optimum, and a sufficient restoring force can be secured.

Thus, the restoration force of the ship can be secured by the inflow and discharge of seawater by the ballast water treatment apparatus. However, the inflow and outflow of seawater can be done in the same place, but the occurrence of different microbes in different places can be a cause of death of marine microorganisms. There are various kinds of microorganisms in seawater, and the kinds of microorganisms may be different in each seawater. However, when the seawater flowing in a specific sea water is released into another sea water, the seawater may be contaminated due to mixing of different microorganisms.

In order to prevent this, a ballast water treatment apparatus is provided with a filter for preventing inflow of microorganisms, and a sterilizing agent may be used to extinction microorganisms not filtered by the filter. In other words, by injecting sterilizing agent into the inflowing seawater, microorganisms remaining in the stored sea water are destroyed.

However, if residual water is contained in the seawater when releasing the stored seawater, it may cause the native species already existing in the water body to be killed. Thus, in order to prevent such environmental damage and economic damage, the ballast water treatment apparatus emits seawater after removing the disinfectant component.

Here, a neutralizing agent may be used to remove the disinfectant component, and a separate means for injecting the neutralizing agent may be provided in the ballast water treatment apparatus.

On the other hand, if the concentration of the neutralizing agent to be injected is too high, it may also cause contamination of seawater in the relevant area.

Therefore, it is required to introduce an invention that allows an appropriate level of neutralizing agent to be injected into the ballast water at the time of dibaling.

The object of the present invention is to provide a ballast water treatment apparatus for injecting a neutralizing agent into ballast water which is de-ballasting based on a measurement result of one TRO sensor measuring the TRO concentration of neutralized ballast water .

The present invention provides a ballast water treatment method for injecting a neutralizing agent into a ballast water which is de-ballasting based on a measurement result of a TRO sensor measuring a TRO concentration of a neutralized ballast water injected with a neutralizing agent .

The problems of the present invention are not limited to the above-mentioned problems, and other problems not mentioned can be clearly understood by those skilled in the art from the following description.

According to an aspect of the present invention, there is provided an apparatus for treating ballast water according to the present invention, comprising: a tank containing a total residual oxidant (TRO) concentration in a ballast water to which a neutralizing agent is injected and dibaltustrated; A neutralization control unit for determining the concentration or amount of the neutralizing agent to be injected based on the measurement result, and a neutralization unit for injecting the neutralizing agent according to the determined concentration or amount into the ballast water to be de-ballasted do.

The TRO sensor measures a first concentration and a second concentration, wherein the first concentration comprises the concentration of total residual oxidant contained in the ballast water prior to the introduction of the neutralizing agent, and the second concentration after the neutralizing agent has been injected Wherein the neutralizer injects a neutralizer according to the concentration and amount of the neutralizer determined based on the first concentration and the second concentration.

An aspect of the method of treating ballast water of the present invention comprises the steps of measuring the concentration of Total Residual Oxidant (TRO) contained in the ballast water to which the neutralizing agent is injected and defibrillated using a TRO sensor , Determining the concentration or amount of the neutralizing agent to be injected based on the measurement result, and injecting the neutralizing agent according to the determined concentration or amount into the deballosted ballast water.

Determining the concentration or amount of the neutralizing agent comprises determining the concentration or amount of the neutralizing agent that is increased relative to the reference concentration or reference amount when the measured concentration of total residual oxidant exceeds a predetermined threshold.

Determining the concentration or amount of the neutralizing agent comprises determining the concentration or amount of the neutralizing agent reduced relative to the reference concentration or reference amount when the measured concentration of total residual oxidizing agent is below a predetermined threshold.

The details of other embodiments are included in the detailed description and drawings.

According to the ballast water treatment apparatus and method of the present invention as described above, one or more of the following effects can be obtained.

First, neutralization agent is injected into the ballast water which is de-ballasting based on the measurement result of one TRO sensor which measures the TRO concentration of the neutralized ballast water by injecting neutralizer, so that an appropriate level of neutralizing agent is injected into the ballast water.

Second, the use of only one TRO sensor makes it possible to reduce the cost of production and structure design.

1 is a view showing a ballast water treatment apparatus according to an embodiment of the present invention.
2 is a view showing a ballast water treatment apparatus according to another embodiment of the present invention.
3 is a diagram illustrating the relationship between the total residual oxidizing agent and the neutralizing agent according to another embodiment of the present invention.
4 is a view showing a ballast water treatment apparatus according to another embodiment of the present invention.
5 is a flowchart illustrating a ballast water treatment process according to another embodiment of the present invention.
6 and 7 are conceptual diagrams illustrating a neutralizing agent injection process according to another embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention and the manner of achieving them will become apparent with reference to the embodiments described in detail below with reference to the accompanying drawings. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. Is provided to fully convey the scope of the invention to those skilled in the art, and the invention is only defined by the scope of the claims. Like reference numerals refer to like elements throughout the specification.

Unless defined otherwise, all terms (including technical and scientific terms) used herein may be used in a sense commonly understood by one of ordinary skill in the art to which this invention belongs. Also, commonly used predefined terms are not ideally or excessively interpreted unless explicitly defined otherwise.

1 is a view showing a ballast water treatment apparatus according to an embodiment of the present invention.

1, a ballast water treatment apparatus 10 according to an embodiment of the present invention includes a ballast pump 11, a filter 12, an electrolytic tank 13, a ballast tank 14, and a neutralization device 15 .

The ballast pump 11 generates a pressure difference and serves to introduce seawater outside the ship into the inside of the ship. The seawater is introduced into the ship through the sea chest 20 by the pressure of the ballast pump 11. The seed chest 20 is a reservoir provided at the bottom of the vessel for temporarily storing seawater. The seed chest 20 may be provided with a strainer to prevent foreign matter from entering.

Various microorganisms may be present in the seawater flowing through the seed chest 20. The filter 12 serves to prevent microbes from flowing into the seed chest 20.

The filter 12 may include an element that performs filtering. On the other hand, as the filtering proceeds, the filtered microorganisms remain in the element, and thus the effect of inflow of seawater can be reduced.

Thus, an operation of washing the element is required to remove the microorganisms remaining in the element. Here, when the filter 12 includes a plurality of elements, cleaning may be performed on some other elements while some elements perform filtering of microorganisms.

On the other hand, most of the microorganisms can be removed from the seawater introduced by the filter 12. However, the fine microorganisms not filtered by the filter 12 remain in the seawater as it is.

These microorganisms can be destroyed by using a sterilizing liquid. For this purpose, the electrolytic bath 13 can produce sodium hypochlorite (NaOCl), which is a raw material of the sterilizing liquid. The electrolytic bath 13 electrolyzes a part of the incoming seawater to generate sodium hypochlorite.

A part of the seawater filtered by the filter (12) flows into the electrolytic bath (13). Thus, the incoming seawater comes into contact with the electrode in the electrolytic bath 13, causing a chemical reaction to generate sodium hypochlorite. The seawater, including sodium hypochlorite, is injected into the main pipeline again. At this time, a TRO sensor 16 may be provided to measure the total residual oxidant (TRO) concentration of the seawater at the point where sodium hypochlorite is injected to produce an appropriate amount of sodium hypochlorite.

The ballast tank 14 serves to receive the ballast water from which the microorganisms have been removed. It is preferable that the ballast tank 14 is formed along the lower surface of the ship or along the lower surface and the side surface in order to lower the center of gravity of the ship.

1 shows one ballast tank 14, however, a plurality of ballast tanks may be arranged on the lower surface and the side surface of the ship in each zone.

As the sodium hypochlorite produced by the electrolytic bath 13 is injected, the ballast water contained in the ballast tank 14 contains a sterilizing component. As time passes, the sterilization component contained in the ballast water disappears.

However, if sufficient time has not elapsed, ballast water may still contain germicidal components. Therefore, in discharging the ballast water contained in the ballast tank 14, removal of the sterilizing component should be accompanied. This is because if the residual sterilization component is not removed, it may cause environmental damage that the native microorganisms in the water area are removed by the residual sterilizing component.

In order to neutralize the sterilizing component, the neutralizer 15 serves to inject neutralizing agent into the ballast water discharged from the ballast tank 14.

As described above, sodium hypochlorite produced by the electrolytic bath 13 may be used as the sterilizing agent. In this case, the neutralization apparatus 15 can inject a neutralizing agent that reacts with the chlorine component. For example, the neutralizer 15 can be fed with a neutralizer having components such as ascorbic acid (C6H8O6), sodium sulfite (Na2SO3), sodium hydrogen sulfite (NaHSO3), sodium bisulfite (NaHSO3), sodium thiosulfate (Na2S2O3) have.

On the other hand, in order to inject a proper amount of neutralizing agent, the neutralization apparatus 15 can refer to the TRO concentration measured by the TRO sensor 16. [

In particular, the neutralization apparatus 15 may determine the amount or concentration of the neutralizing agent by referring to the TRO concentration of the ballast water discharged from the ballast tank 14, and inject neutralized agent in the determined amount or concentration into the ballast water.

2 is a view showing a ballast water treatment apparatus according to another embodiment of the present invention.

2, the ballast water treatment apparatus 200 includes a ballast pump 11, a filter 12, an electrolytic tank 13, a ballast tank 14, a neutralization unit 230, a neutralization control unit 220, (210).

Since the ballast pump 11, the filter 12, the electrolytic bath 13, and the ballast tank 14 have been described above, a detailed description thereof will be omitted.

The TRO sensor 210 measures the concentration of the total residual oxidant contained in the ballast water to which the neutralizing agent is injected and de-ballasted.

The TRO sensor 16 shown in FIG. 1 measures the concentration of the total residual oxidant contained in the ballast water before the neutralizing agent is injected. Meanwhile, according to another embodiment of the present invention, the TRO sensor 210 implemented as a single object measures the concentration of the total residual oxidizing agent contained in the ballast water after the neutralizing agent is injected.

When de-balusting is initiated, the neutralization apparatus 230 injects a predetermined reference concentration or a predetermined amount of neutralizing agent. At this time, the TRO sensor 210 measures the concentration of the total residual oxidizing agent contained in the ballast water into which the reference concentration or the standard amount of the neutralizing agent is injected.

On the other hand, as described later, the concentration or amount of the neutralizing agent injected into the ballast water can be changed as the de-ballasting proceeds. Accordingly, the TRO sensor 210 can measure the concentration (hereinafter referred to as TRO concentration) of total residual oxidant continuously included in the ballast water to be de-ballasting.

The neutralization controller 220 can determine the concentration or amount of the neutralizing agent to be injected based on the measurement result of the TRO sensor 210. [

For example, if the TRO concentration measured by the TRO sensor 210 exceeds a predetermined threshold, the neutralization control unit 220 may determine the concentration or amount of the neutralizing agent that is increased relative to the reference concentration or reference amount.

In addition, when the TRO concentration measured by the TRO sensor 210 is less than a predetermined threshold value, the neutralization control unit 220 can determine the concentration or the amount of the neutralizing agent reduced compared to the reference concentration or the reference amount.

The neutralization controller 220 can determine the concentration or amount of the neutralizing agent in proportion to the measured TRO concentration. In addition, the neutralization controller 220 may determine the concentration or amount of the neutralizing agent based on the range including the measured TRO concentration.

3 is a diagram illustrating the relationship between the total residual oxidizing agent and the neutralizing agent according to another embodiment of the present invention.

Referring to FIG. 3, there is shown the relationship between the preset TRO concentration ranges 311, 312, and 313 and the concentrations or amounts of neutralizing agents 321, 322, and 323 corresponding to each range.

For example, the TRO concentration ranges 311, 312, and 313 can be set to be divided into three. Here, when the measured TRO concentration is included in the first range 311, the neutralization control unit 220 can determine the concentration or amount 321 of the neutralizing agent in the first concentration or the first amount. In addition, when the measured TRO concentration is included in the second range 312, the neutralization control unit 220 can determine the concentration or amount 322 of the neutralizing agent in the second concentration or the second amount. In addition, when the measured TRO concentration is included in the third range 313, the neutralization controller 220 can determine the concentration or the amount 323 of the neutralizing agent at the third concentration or the third concentration.

Meanwhile, FIG. 3 shows that the TRO concentration ranges 311, 312, and 313 are divided into three, but the number may vary according to various embodiments. In addition, the sizes of the respective ranges may be the same, or some or all of them may be different.

Referring to FIG. 2, the neutralizer 230 injects the neutralizer according to the concentration or amount determined by the neutralizer 220 into the de-ballasting ballast water.

The neutralization controller 220 transfers the concentration or amount of the neutralizer to be injected to the neutralizer 230. Accordingly, the neutralizing agent can be injected into the ballast water according to the concentration or amount of the neutralizing device 230.

Here, the neutralizer of the concentration determined by the neutralization controller 220 is a reference neutralizer, which means that the concentration of the neutralizer is different from the reference concentration. The amount of the neutralizing agent determined by the neutralization controlling unit 220 means that the amount of the neutralizing agent as the reference concentration is different from the reference amount.

2 shows that the neutralization control unit 220 and the neutralization unit 230 are provided separately from each other. However, according to another embodiment of the present invention, the neutralization controller 220 may be provided in the neutralizer 230.

As described above, the TRO sensor 210 according to another embodiment of the present invention can be implemented as a single object. As described above, since only one sensor is used, the cost required for production and structure designing of the ballast water treatment system can be reduced.

Also, one TRO sensor 210 may measure the TRO concentration before the neutralizing agent is injected and the TRO concentration after the neutralizing agent is injected, as shown in FIG.

4 is a view showing a ballast water treatment apparatus according to another embodiment of the present invention.

Referring to FIG. 4, the ballast water treatment apparatus 400 includes a first concentration of total residual oxidizing agent contained in the ballast water before the neutralizing agent is injected, and a second concentration of the total residual oxidizing agent contained in the ballast water after the neutralizing agent is injected. And a TRO sensor 211 for measuring the concentration.

As the first concentration and the second concentration are measured, the neutralization control unit 220 can determine the concentration and amount of the neutralizing agent based on the measured first concentration and the second concentration. The neutralizer 230 may inject the neutralizer according to the concentration and amount of the neutralizer determined by the neutralizer 220 into the de-ballasting ballast water.

As described above, the concentration or amount of the neutralizing agent is determined in proportion to the TRO concentration measured by the TRO sensor 211. [ Alternatively, the concentration or amount of the neutralizing agent may be determined based on the range including the TRO concentration measured by the TRO sensor 211. [

Accordingly, the neutralization controller 220 can determine the concentration or amount of the neutralizing agent in proportion to the average value of the first concentration and the second concentration. Alternatively, the neutralization control unit 220 may determine the concentration or amount of the neutralizing agent based on the range including the average of the first concentration and the second concentration.

Here, the determination of the concentration or amount of the neutralizing agent based on the average value of the first concentration and the second concentration is an exemplary one. Therefore, the concentration or amount of the neutralizing agent may be determined on the basis of the value reflecting the previously set weights for each concentration.

Hereinafter, the ballast water treatment apparatus 200 for measuring the concentration of total residual oxidant included in the ballast water after the neutralizing agent is injected as shown in FIG. 2 and determining the concentration or amount of the neutralizing agent will be described .

5 is a flowchart illustrating a ballast water treatment process according to another embodiment of the present invention.

Referring to FIG. 5, when the de-ballasting is started, the neutralizer 230 injects neutralizing agent into the ballast water to be de-ballasted (S510). Here, the neutralization apparatus 230 can inject neutralization agent having a predetermined reference concentration or a predetermined amount.

The TRO sensor 210 measures the TRO concentration of the ballast water. The TRO sensor 210 according to the embodiment of the present invention can measure the TRO concentration at predetermined time intervals. That is, the TRO sensor 210 does not measure the TRO concentration in real time but measures the TRO concentration at a predetermined time interval.

Thus, the neutralization controller 220 determines whether the threshold time has elapsed (S520). If it is determined that the critical time has elapsed, the neutralization controller 220 compares the TRO concentration in the ballast water with a preset threshold (S530). Here, the threshold time is preferably larger than the measurement time interval of the TRO sensor 210. [

Thus, if it is determined that the TRO concentration exceeds the threshold value, the neutralization apparatus 230 injects an increased concentration or amount of neutralizing agent relative to the reference concentration or reference amount (S540). Alternatively, if it is determined that the TRO concentration is below the threshold value, the neutralization apparatus 230 injects the neutralization agent in a reduced concentration or amount as compared with the reference concentration or the reference amount (S560). Alternatively, if it is determined that the TRO concentration is appropriate, the neutralization apparatus 230 injects a reference concentration or a reference amount of neutralizing agent (S550).

Measurement of TRO concentration and neutralization agent injection according to the measured results are repeatedly performed.

6 and 7 illustrate a neutralization agent injection process according to another embodiment of the present invention.

6 and 7, when de-balusting is initiated, the neutralizer 230 injects a reference concentration or a reference amount of neutralizing agent b 620 into the ballast water a 610 discharged from the ballast tank 14 .

The ballast water c (630) injected with the neutralizing agent moves along the ballast pipe. At this time, the TRO sensor 210 measures a TRO concentration by taking a part c (640) of the ballast water c (630) flowing through the ballast pipe by injecting a neutralizing agent.

The concentration or amount of the neutralizing agent to be injected is determined according to the measured TRO concentration. At this time, as shown in Fig. 7, the neutralizer b1 (621) of the concentration or the amount determined according to the measured TRO concentration is injected into the ballast water a (611).

The ballast water c1 (631) injected with the neutralizing agent moves along the ballast pipe. The TRO sensor 210 acquires a portion c1 641 of the ballast water c1 631 to measure the TRO concentration.

The concentration or amount of the neutralizing agent to be injected is determined according to the measured TRO concentration, and the process shown in FIG. 7 can be repeated until the de-ballasting is completed.

It has been described that one of the concentration and the amount of neutralizing agent determined by the neutralization control unit 220 is injected into the ballast water to be de-ballasted. However, a neutralizer with both a change in concentration and amount may be injected into the ballast water to be de-ballasted.

For example, if the TRO concentration measured by the TRO sensor 210 exceeds a predetermined threshold, the neutralizer 230 may inject a neutralizer with increased concentration and amount.

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, It will be understood. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive.

11: Ballast pump 12: Filter
13: electrolytic cell 14: ballast tank
210: TRO sensor 220: neutralization control unit
230: Neutralizer

Claims (5)

A TRO sensor for measuring the concentration of total residual oxidant (TRO) contained in the ballast water to which the neutralizing agent is injected and de-ballasting;
A neutralization control unit for determining the concentration or amount of the neutralizing agent to be injected based on the measurement result; And
And a neutralizing device for injecting a neutralizing agent according to the determined concentration or amount into the ballast water to be de-ballasted. The method according to claim 1,
Wherein the TRO sensor measures a first concentration and a second concentration,
Wherein the first concentration comprises the concentration of total residual oxidant contained in the ballast water prior to the introduction of the neutralizing agent,
The second concentration comprises the concentration of total residual oxidant contained in the ballast water after the neutralizer has been injected,
Wherein the neutralization apparatus injects a neutralizing agent according to the concentration and amount of the neutralizing agent determined based on the first concentration and the second concentration. Measuring a concentration of a total residual oxidant (TRO) contained in the ballast water to which the neutralizing agent is injected by using the TRO sensor and is de-ballasting;
Determining the concentration or amount of the neutralizing agent to be injected based on the measurement result; And
And injecting a neutralizing agent according to the determined concentration or amount into the ballast water to be de-ballasted. The method of claim 3,
Wherein determining the concentration or amount of the neutralizing agent comprises determining the concentration or amount of the neutralizing agent that is increased relative to the reference concentration or reference amount when the measured concentration of total residual oxidant exceeds a predetermined threshold value Water treatment method. The method of claim 3,
Wherein determining the concentration or amount of the neutralizing agent comprises determining the concentration or amount of the neutralizing agent that is reduced relative to the reference concentration or reference amount when the measured concentration of total residual oxidizing agent is below a predetermined threshold value Way.
KR1020150038627A 2015-03-20 2015-03-20 Apparatus and method for treating ballast water KR20160112601A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018190574A1 (en) * 2017-04-12 2018-10-18 한라아이엠에스 주식회사 Ballast water treatment system
WO2018190575A1 (en) * 2017-04-12 2018-10-18 한라아이엠에스 주식회사 Ballast water treatment system and method

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20120062603A (en) 2011-07-08 2012-06-14 현대중공업 주식회사 A method for treatment of ballast water of ship using electrolysis unit

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20120062603A (en) 2011-07-08 2012-06-14 현대중공업 주식회사 A method for treatment of ballast water of ship using electrolysis unit

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018190574A1 (en) * 2017-04-12 2018-10-18 한라아이엠에스 주식회사 Ballast water treatment system
WO2018190575A1 (en) * 2017-04-12 2018-10-18 한라아이엠에스 주식회사 Ballast water treatment system and method
US11192806B2 (en) 2017-04-12 2021-12-07 Hanlaims Co., Ltd Ballast water treatment system and method
US11643343B2 (en) 2017-04-12 2023-05-09 Hanlaims Co., Ltd Ballast water treatment system and method

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