KR20130061824A - System for supplying balast water and method for operating of the same - Google Patents

Abstract

PURPOSE: A ballast water supply system and an operation method thereof are provided to minimize the environment contamination of the sea by discharging processed seawater first when draining the ballast water of a ballast water tank. CONSTITUTION: A ballast water supply system comprises a first line(L1) and a processing pump(30). The first line supplies seawater introduced through a sea chest to a ballast water processing device. The processing pump is installed in the first line. The processing pump supplies the seawater which is not processed in the first line to the ballast water processing device when a ballast pump stops.

Description

Ballast water supply system and its driving method {SYSTEM FOR SUPPLYING BALAST WATER AND METHOD FOR OPERATING OF THE SAME}

The present invention relates to a ballast water supply system and a driving method thereof, and more particularly, to a ballast water supply system and a method for driving the ballast water supply system capable of supplying and treating untreated seawater in a pipe when the ballast pump is stopped. It is about.

Cargo ships are operated with seawater in ballast water tanks for efficient operation, balance and stability of propellers and rudders under water when there are not enough cargo. It is generally called ballast water. Ballast water is a heavy load loaded to adjust the draft and trim of the ship. It functions to maintain the balance and stability of the ship. It will perform the auxiliary function to make it work effectively.

Ballast water has been in use since the late 1870s when ships began to be built of steel, and some ships use ore or sand as ballast without loading ballast water, but today, seawater or fresh water is used as ballast. It is universal.

On the other hand, ballast water, which is taken from seawater or freshwater from a port, waterway or ocean and loaded into a ballast water tank, includes various marine organisms contained in the seawater or freshwater, which are collected together with the ballast water, and thus the ballast of the ship. Transferred to the water tank. The intake and discharge of ballast water may vary depending on the industrial development of the country to which the vessel is calling and the absence of resources, etc.Because of the characteristics of the vessel, the oil tankers or bulk carriers that need to load a large amount of ballast water In this case, the exporters of raw materials such as oil producing countries or iron ore are more likely to be exposed to various pathogens and foreign marine species parasitic in ballast water than the importing countries. According to data from the International Maritime Organization (IMO), it is estimated that more than 10 billion tons of ballast water is transported annually worldwide.

The biggest problem with ballast water is that it is basically used as a medium for spreading foreign marine species, that is, the organisms or pathogens in a specific sea area contained in the ballast water are completely different by the vessel containing the ballast water. It is transported to the sea, causing side effects that disturb the environment and ecosystem of the sea. Problems caused by cross-border migration of species in ballast water can cause not only ecosystem disturbances but also significant damage to coastal industries and other commercial activities or resources.

List the problems caused by ballast water, which can destroy or disrupt existing indigenous ecosystems, threaten fisheries and human health by pathogens and toxic organisms, and can lead to significant losses in species removal and other fishery economics. There was a problem of causing damage.

Due to these problems, the United States enacted the National Invasive Species Act in 1996 to mandate alien species as intruders and mandated the management and control of ballast water. In Australia, the Quarantine Act was amended to import ballast water into quarantine. It regulates and carries out quarantine directly. In addition, the International Maritime Organization (IMO) signed an international agreement in February 2004, and since 2009, the ballast water treatment system should be mounted on ships in order to prohibit entry of the vessel in case of violation.

Therefore, in the conventional ballast water supply system, the ballast pump was driven to sterilize seawater that passed through the sea chest by a ballast water treatment device and supplied to the ballast water tank.

However, when the ballast pump stops driving, the seawater flowing through the sea chest and not passing through the ballast water treatment system is accumulated in the line between the sea chest and the ballast pump, so when the ballast water stored in the ballast water tank is drained. Untreated seawater is sent to the sea first, so it has no choice but to contaminate the environment and ecosystem of the sea area.

SUMMARY OF THE INVENTION An object of the present invention is to provide a ballast water supply system and a driving method thereof capable of supplying and treating untreated seawater in a pipe to a ballast water treatment apparatus when the ballast pump is stopped.

According to an embodiment of the present invention for achieving the above object, the ballast water for supplying to the ballast water tank by sterilizing by the ballast water treatment device by driving the ballast pump, the seawater introduced through the sea chest (sea chest) A supply system, comprising: a first line for supplying seawater introduced through the sea chest to the ballast water treatment apparatus; and a processing pump installed at the first line and operating at the stop of the ballast pump; A ballast water supply system is provided for supplying untreated seawater in said first line to said ballast water treatment apparatus through a treatment pump.

In addition, the ballast water supply system according to the present invention further includes a second line extending from the ballast water treatment apparatus to the first line to supply the seawater treated by the ballast water treatment apparatus to the first line, Preferably, the seawater supplied to the ballast water treatment apparatus by the treatment pump and treated is returned to the first line through the second line.

The plurality of ballast pumps, it is preferable to use the treatment pump jointly when the plurality of ballast pumps stop driving.

It is preferable that the ballast pump further includes a first valve for preventing the supply of seawater to the treatment pump when the ballast pump is driven, and a second valve for preventing the supply of seawater to the ballast pump when the treatment pump is driven.

The ballast water treatment apparatus is preferably a treatment apparatus of any one or more of ultraviolet irradiation, heating, ultrasonic wave, electrolysis, ozone treatment, nano ozone organic chemical additives, filter treatment.

In addition, according to another embodiment of the present invention, the method of driving the ballast water supply system for supplying the seawater flowing through the sea chest (sea chest) to the ballast water tank by sterilizing by the ballast water treatment device by driving the ballast pump And supplying the untreated seawater in the first line to the ballast processing apparatus, which supplies the seawater introduced through the sea chest to the ballast processing apparatus through a processing pump operating when the ballast pump is stopped. A method of driving a ballast water supply system is provided.

The seawater supplied to and treated by the treatment pump to the ballast water treatment apparatus is preferably returned to the first line through a second line extending from the ballast water treatment apparatus to the first line.

In addition, according to another embodiment of the present invention, as a ballast water supply system for supplying the seawater introduced through the sea chest (sea chest), the ballast pump is sterilized by the ballast water treatment device to supply to the ballast water tank, A ballast water supply system is provided that includes a treatment pump operating at a stop of the ballast pump to supply untreated seawater introduced through the sea chest to the ballast water treatment apparatus.

According to the present invention, when the ballast pump is stopped, the untreated seawater in the pipe can be supplied to the ballast water treatment device for treatment. Accordingly, when the ballast water stored in the ballast water tank is drained, the treated seawater is discharged first, thereby minimizing the environmental pollution of the sea area, and the regulations of the International Maritime Organization (IMO) and the Norwegian Register of Classification (DNV CLASS NOTATION). It can also satisfy the provisions of.

1 is a view for explaining a ballast water supply system according to an embodiment of the present invention,
2 is a view showing a state in which the ballast pump is driven in the ballast water supply system shown in FIG.
3 and 4 are views showing a state in which the treatment pump is driven in the ballast water supply system shown in FIG.

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

1 is a view for explaining a ballast water supply system according to an embodiment of the present invention.

Referring to FIG. 1, a ballast water supply system according to an exemplary embodiment of the present invention includes a starboard sea chest (11) and a first ballast for supplying seawater having passed through the starboard sea chest (11) to a first ballast water tank (17). The first ballast water treatment apparatus 15 for sterilizing the seawater passing through the pump 13, the first ballast pump 13, the port sea chest 21 and the sea sea chest passed through the port sea chest 21 are removed. Second ballast pump 23 for supplying to the 2 ballast water tank 27, the 2nd ballast water treatment apparatus 25 which sterilizes the seawater which passed through the 2nd ballast pump 23, and the 1st ballast pump ( 13) and / or process pump 30 which operates when the second ballast pump 23 stops driving.

The ballast water supply system according to the present invention is applied to a floating offshore structure, and supplies the seawater introduced through the starboard and port sea chests (11, 21) to the first and second ballast water treatment devices (15, 25), respectively. And a second line L2 extending from the first and second ballast water treatment apparatuses 15 and 25 to the first line L1.

In the present specification, a floating floating structure means a structure including both a storage tank for storing a liquefied gas such as LNG or LPG and an oil storage tank for storing oil, (LNG transport), LNG RV (LNG Regasification Vessel), as well as OIL FPSO, LNG FSRU (Floating Storage and Regasification Unit), as well as LNG FPSO (Floating, Production, Storage and Offloading) .

The sea chest includes a seawater inflow portion through which seawater is introduced, and a seawater storage portion through which seawater is temporarily stored and discharged into the sea duct.

The first and second ballast pumps 13 and 23 are configured to supply the seawater passing through the respective sea chests 11 and 21 to the corresponding ballast water tanks 17 and 27, respectively. Seawater sterilized through 25) is supplied to the corresponding ballast water tanks 17 and 27, respectively.

In this embodiment, the first and second ballast pumps 13 and 23 are simultaneously driven to supply seawater to the first and second ballast water tanks 17 and 27, but the present invention is not necessarily limited thereto. It is also possible to drive seawater to the first or second ballast water tanks 17 and 27 by driving the first or second ballast pumps 13 and 23 as necessary.

The process pump 30 is installed in the first line L1. The process pump 30 operates when the first and second ballast pumps 13 and 23 are stopped or when the first or second ballast pumps 13 and 23 are stopped.

In addition, the treatment pump 30 is jointly used when the first and second ballast pumps 13 and 23 are stopped, and at the same time, the process pump 30 has a priority specified when the first and second ballast pumps 13 and 23 are stopped. In accordance with this, the untreated seawater in the first line L1 connected to the ballast pump is supplied to the ballast water treatment apparatus.

In addition, the treatment pump 30 may drain residual water remaining in the first and second ballast water tanks 17 and 27. In more detail, when the seawater stored in the first and second ballast water tanks 17 and 27 is drained through the first and second ballast pumps 13 and 23, the first and second ballast pumps 13 and 23 Under-sea water will remain in the ballast water tank. Thus, the remaining sea water, that is, the remaining water in the ballast water tank can be discharged into the sea area through the treatment pump 30, it is possible to reduce the amount of residual water compared to the conventional ballast water supply system.

When the seawater stored in the first and second ballast water tanks 17 and 27 is drained, the first and second ballast pumps 13 and 23 are driven to store the water stored in the first and second ballast water tanks 17 and 27, respectively. The treated seawater passes the ultraviolet sterilizer of the ballast water treatment apparatus and sends the sterilized seawater to the sea area. When the remaining water in the ballast water tank is drained, the treatment pump 30 is driven to discharge the remaining water in the ballast water tank through the ultraviolet sterilizer of the ballast water treatment device to the seawater.

The untreated seawater in the first line L1 is supplied to the corresponding ballast water treatment device and sterilized, respectively, through the second line L2 extending from the corresponding ballast water treatment device to the first line L1. Return to L1). Accordingly, the seawater in the first line L1 is sterilized seawater treated by the ballast water treatment device, not the untreated seawater.

Accordingly, the first and second ballast water tanks 17 and 27 supplied after supplying seawater to the first and second ballast water tanks 17 and 27 through the first and second ballast pumps 13 and 23. When draining the seawater, the treated seawater in the first line (L1) is first drained to the sea area, thereby minimizing environmental pollution, and the regulations of the International Maritime Organization (IMO) and the Norwegian Register of Classification (DNV CLASS NOTATION). Can also be satisfied.

The first and second ballast water tanks 17 and 27 are sterilized by the first and second ballast water treatment devices 15 and 25 connected to the first and second ballast pumps 13 and 23, respectively. Save it.

2, the first ballast water tank 17 drives the first ballast pump 13 to supply the seawater introduced through the starboard seed chest 11 to the first ballast water treatment device 15.

The seawater supplied to the first ballast water treatment device 15 is ultraviolet sterilized by the filter 151 and the ultraviolet sterilizer 152 and supplied to the first ballast water tank 17. The first ballast water treatment apparatus 15 includes a flow meter 153 for measuring the flow rate stored in the first ballast water tank 17.

Although the first ballast water treatment device 15 is described as filtering and ultraviolet sterilizing through the filter 151 and the ultraviolet sterilizer 152 in the present embodiment, the present invention is not limited thereto. A ballast water treatment apparatus may be applied which sterilizes seawater by physical treatment such as treatment, chemical treatment using chlorine, chlorine dioxide, ozone, nano ozone, hydrogen peroxide and many other organic chemicals, or a combination thereof. .

The seawater sterilized through the first ballast water treatment device 15 is supplied to the first ballast water tank 17.

When driving the first ballast pump 13, the first valve B1 is provided to prevent the supply of seawater to the treatment pump 30, and the first ballast water treatment apparatus is used to treat seawater that has passed through the starboard sea chest 11; 15) to be sterilized to be supplied to the first ballast water tank (17). The position of the 1st valve B1 is shown well in FIG. 2, and is not necessarily limited to the position, as long as it is the position which can prevent the supply of seawater to the process pump 30 on the 1st line L1.

Similarly, the second ballast water tank 27 also drives the second ballast pump 23 to supply the seawater introduced through the port sea chest 21 to the second ballast water treatment apparatus 25. The second ballast water treatment device 25 also includes a filter 251, an ultraviolet sterilizer 252, and a flow meter 253.

Seawater sterilized through the second ballast water treatment device 25 is supplied to the second ballast water tank 27.

The first valve B1 installed on the first line L1 may be adjusted to prevent supply of seawater to the treatment pump 30 when the second ballast pump 23 is driven.

As such, the first and second ballast pumps 13 and 23 are driven to supply seawater to the first and second ballast water tanks 17 and 27, and then the first and second ballast pumps 13 and 23 are driven. The treatment pump 30 is operated when it is shown.

The first ballast pump 13 for supplying the seawater introduced through the starboard seed chest 11 to the first ballast water tank 17 and the second ballast water tank for the seawater introduced through the port seed chest 21. The process pump 30 is jointly used at the time of stopping the drive of the second ballast pump 13 to be supplied to 27.

When the driving of the first and second ballast pumps 13 and 23 is stopped, the seawater introduced through the starboard and port sea chests 11 and 21 is supplied to the first and second ballast water treatment devices 15 and 25. Untreated seawater is accumulated in the first line L1, respectively.

The treatment pump 30 supplies the untreated seawater in the first line L1 to the first and second ballast water treatment apparatuses 15 and 25, respectively. In this case, when the first and second ballast pumps 13 and 23 are stopped at the same time, the treatment pump 30 supplies the untreated seawater in the first line L1 according to a predetermined priority to the corresponding ballast water treatment apparatus. To feed.

The third valve B3 on the starboard and port sea chests 11 and 21 is closed when the treatment pump 30 is operated.

Interrupting the second valve B2 installed in the position adjacent to the first and second ballast pumps 13 and 23 to pass untreated seawater in the first line L1 to the ballast water treatment apparatus through the treatment pump 30. To be supplied. Although the position of the 2nd valve B2 is shown well in FIG. 3, it is not necessarily limited to this, It is possible if it is a position which can prevent the supply of seawater to the said ballast pump.

The seawater supplied to the first and second ballast water treatment devices 15 and 25 through the treatment pump 30 may be sterilized and supplied to the first line L1. In addition, the residual water remaining in the first and second ballast water tanks 17 and 27 may be drained through the treatment pump 30.

The treated seawater is returned to the first line L1 through the second line L2 extending from the first and second ballast water treatment devices 15 and 25 to the first line L1. Accordingly, the treated seawater is accumulated in the first line L1, unlike the conventional ballast water supply system.

The thick line shown in FIG. 3 supplies the untreated seawater in the first line L1 to the first ballast water treatment device 15 through the treatment pump 30 and is treated by the first ballast water treatment device 15. The flow of the circulated water is returned to the first line L1 through the second line L2.

The thick line shown in FIG. 4 supplies untreated seawater in the first line L1 to the second ballast treatment apparatus 25 through the treatment pump 30 and is treated by the second ballast water treatment apparatus 25. The flow of sea water returned to the first line L1 through the second line L2 and circulated is shown.

When the seawater stored in the first and second ballast water tanks 17 and 27 is drained, the treated seawater in the first line L1 when the first and second ballast pumps 13 and 23 are drained into the sea area Is first drained to sea area. As a result, environmental pollution can be minimized and the requirements of the International Maritime Organization (IMO) and the Norwegian Register of Classification (DNV CLASS NOTATION) can be met.

The driving method of the same ballast water supply system will be described as follows.

All ballast pumps of the ballast water supply system installed in the floating offshore structure can be driven simultaneously or selectively.The ballast pump is driven to supply seawater that has passed through the chest chest to the ballast water tank and to simultaneously supply the seawater stored in the ballast water tank. Or may optionally be drained.

Hereinafter, a process of driving one ballast pump, for example, the first ballast pump 13, stopping the driving and draining the seawater stored in the first ballast water tank 17 will be described.

The ballast water supply system installed in the floating offshore structure drives the first ballast pump 13 to supply the seawater introduced through the starboard sea chest 11 to the first ballast water tank 17. At this time, seawater that has undergone starboard chest (11) in order to satisfy the regulations of the International Maritime Organization (IMO) and the Norwegian Classification Society (DNV CLASS NOTATION) is sterilized and sterilized by the first ballast water treatment device (15). The seawater thus supplied is supplied to the first ballast water tank 17.

When supply is supplied to the 1st ballast water tank 17 by the fixed flow volume, the drive of the 1st ballast pump 13 is stopped.

The processing pump 30 is driven at the same time as the driving stop of the first ballast pump 13 or after a predetermined time has elapsed. At this time, the second valve B2 is adjusted to prevent the supply of seawater to the first ballast pump 13, and the first valve B1 is adjusted to supply the seawater to the treatment pump 30. The third valve B3 on the starboard and port sea chests 11 and 21 is closed when the treatment pump 30 is operated.

The untreated seawater in the first line L1 is supplied to the first ballast water treatment device 15 through the drive of the treatment pump 30.

The untreated seawater supplied to the first ballast water treatment device 15 is ultraviolet sterilized and is first-lined through a second line L2 extending from the first ballast water treatment device 15 to the first line L1. The treated seawater can be circulated again by returning to L1.

Accordingly, when the seawater stored in the first ballast water tank 17 is drained, the seawater treated in the first line L1 is first drained into the sea area, thereby minimizing environmental pollution in the sea area.

The invention being thus described, it will be obvious that the same way may be varied in many ways. Such modifications are intended to be within the spirit and scope of the invention as defined by the appended claims.

11, 21: starboard and portboard sea chest
13, 23: first and second ballast pump
15, 25: first and second ballast water treatment apparatus
17, 27: 1st and 2nd ballast water tank
30: treatment pump
L1, L2: first and second line
B1, B2: first and second valve

Claims (8)

As a ballast water supply system for supplying the seawater flowing through the sea chest (sea chest) to the ballast water tank by sterilization by the ballast water treatment device by driving the ballast pump,
A first line for supplying seawater introduced through the seed chest to the ballast water treatment apparatus;
A processing pump installed in the first line and operating at the stop of the ballast pump,
The ballast water supply system, characterized in that for supplying the ballast water treatment device untreated seawater in the first line through the treatment pump. The method according to claim 1,
And a second line extending from the ballast water treatment apparatus to the first line to supply the seawater treated by the ballast water treatment apparatus to the first line.
And the seawater supplied to and treated by the treatment pump to the ballast water treatment apparatus is returned to the first line through the second line. The method according to claim 1,
The plurality of ballast pumps, the ballast water supply system, characterized in that for using the process pump when the plurality of ballast pumps stop driving. The method according to claim 1,
And a second valve for preventing seawater supply to the treatment pump when the ballast pump is driven, and a second valve for preventing seawater supply to the ballast pump when the treatment pump is driven. The method according to claim 1,
The ballast water treatment device
Ballast water supply system characterized in that the treatment device of any one or more of ultraviolet irradiation, heating, ultrasonic waves, electrolysis, ozone treatment, nano ozone organic chemical additives, filter treatment. As a method of driving a ballast water supply system, the seawater introduced through a sea chest is sterilized by a ballast water treatment device by driving a ballast pump and supplied to a ballast water tank.
A ballast for supplying the ballast processing apparatus with untreated seawater in a first line for supplying the seawater flowing through the sea chest to the ballast processing apparatus through a processing pump operating at the stop of the ballast pump; Driving method of water supply system. The method of claim 6,
The seawater supplied and treated by the treatment pump to the ballast water treatment apparatus returns to the first line through a second line extending from the ballast water treatment apparatus to the first line. Driving method. As a ballast water supply system for supplying the seawater flowing through the sea chest (sea chest) to the ballast water tank by sterilization by the ballast water treatment device by driving the ballast pump,
And a treatment pump operating at the stop of the ballast pump to supply untreated seawater introduced through the sea chest to the ballast water treatment apparatus.

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