KR101554956B1 - Ballast water treatment system capable of exactly measuring concentration of oxidizing agent - Google Patents

Abstract

The present invention relates to a ballast water treatment system, and more particularly, to a ballast water treatment system comprising a ballast tank for storing ballast water containing sterilized water containing an oxidizer, a water intake meter for measuring and outputting the flow rate of the ballast water supplied to the ballast tank And an oxidizer sensor for measuring in real time the concentration of the oxidizing agent present in the ballast water supplied to the ballast tank and the data output from the water intake meter and the oxidizer sensor in real time to calculate the oxidizer concentration of the ballast water stored in the ballast tank The present invention relates to a ballast water treatment system capable of precisely measuring the concentration of an oxidizer capable of improving sterilization efficiency, economic efficiency, and preventing environmental pollution, including a controller having a concentration calculation unit.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a ballast water treatment system capable of precisely measuring an oxidizer concentration,

The present invention relates to a ballast water treatment system, and more particularly, to a ballast water treatment system comprising a ballast tank for storing ballast water containing sterilized water containing an oxidizer, a water intake meter for measuring and outputting the flow rate of the ballast water supplied to the ballast tank And an oxidizer sensor for measuring in real time the concentration of the oxidizing agent present in the ballast water supplied to the ballast tank and the data output from the water intake meter and the oxidizer sensor in real time to calculate the oxidizer concentration of the ballast water stored in the ballast tank The present invention relates to a ballast water treatment system capable of precisely measuring the concentration of an oxidizer capable of improving sterilization efficiency, economic efficiency, and preventing environmental pollution, including a controller having a concentration calculation unit.

Ballast water means seawater filled in the ballast tanks in order to maintain the balance of the ship when the ship is operated without luggage. With the increase of international trade volume, the marine transportation ratio is increasing, and as the number of vessels increases and the size of vessels increases rapidly, the volume of ballast water used by vessels is greatly increasing. As the amount of ballast water used in vessels increases, the number of cases of harms caused by marine ecosystems due to foreign marine species is also increasing. In order to solve these international environmental problems, the International Maritime Organization (IMO) The International Convention on the Control and Management of Ballast Water and Sediments of Ships has been completed, and a new ballast water treatment system has been installed on ships newly constructed from 2009.

Conventionally, as a method for treating ballast water, there has been a method in which ballast water is exchanged at sea or treated on land, however, a method of installing a treatment facility for treating ballast water in a ship has been widely utilized because of its ineffective disadvantage.

Referring to the patent documents listed below, a ballast water treatment system (method) using electrolysis, which is a type of system for treating ballast water in a conventional vessel, is a system in which a part of an incoming ballast water is electrolyzed, To the ballast water to sterilize the ballast water.

(Patent Literature)

Open Patent Publication No. 10-2007-0046440 (published on Mar. 03, 2007) "Electrolytic Ballast Water Treatment Method and Treatment Apparatus"

However, the concentration of the oxidizing agent supplied to the ballast water is not constant until a certain time elapses from the initial operation, and when the flow rate of the ballast water electrolyzed due to the malfunction of the system changes or the power supplied to the ballast water changes , The concentration of the generated oxidizing agent changes. However, the conventional ballast water treatment system using electrolysis does not consider the above circumstances, and thus there is a problem that the concentration of the ballast tank storing the oxidizing agent mixed ballast water can not be accurately measured in real time . It is impossible to accurately measure the concentration of the oxidizing agent in the ballast tank in real time so that it is impossible to supply a predetermined amount of oxidizing agent for sterilizing the ballast water and the amount of the neutralizing agent to neutralize the oxidizing agent contained in the ballast water discharged from the ballast tank Can not be accurately calculated. As a result, the sterilizing efficiency of the ballast water is lowered and the ballast water discharged to the outside of the ship contains excessive oxidizing agent or neutralizing agent, thereby causing environmental pollution.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems,

The present invention provides a ballast water treatment system capable of accurately measuring the concentration of oxidizing agent in a ballast tank in which ballast water is stored, realizing accurate sterilization efficiency, economic efficiency, and precise measurement of oxidant concentration that can prevent environmental pollution .

In addition, since the concentration of the oxidant in the ballast tank is measured in real time by measuring the flow rate of the ballast water supplied to the ballast tank and the concentration of the oxidant contained in the ballast water in real time, And an object of the present invention is to provide a ballast water treatment system capable of precisely measuring an oxidant concentration accurately.

In addition, since the concentration of the oxidizing agent in the ballast tank can be accurately known in real time during ballasting, it is possible to control the concentration of the oxidizing agent in the ballast tank by controlling the oxidizing agent supply unit, Processing system.

Further, the present invention can accurately determine the concentration of the oxidizer finally stored in the ballast tank and the flow rate of the ballast water, so that the ballast water needs to be supplied in an appropriate amount of neutralizing agent And an object of the present invention is to provide a ballast water treatment system capable of precisely measuring an oxidizing agent concentration capable of estimating an amount of an oxidizing agent.

In order to achieve the above object, the present invention is implemented by the following embodiments.

According to an embodiment of the present invention, a ballast water treatment system capable of precisely measuring an oxidizer concentration according to the present invention includes a ballast tank for storing ballast water mixed with sterilizing water containing an oxidizer, a ballast tank for storing ballast water supplied to the ballast tank A water intake system for measuring and outputting the water flow rate in real time and an oxidizer sensor for measuring the concentration of the oxidizer present in the ballast water supplied to the ballast tank in real time and using the data output from the water intake meter and the oxidizer sensor, And a controller having a concentration calculation unit for calculating an oxidant concentration of the ballast water stored in the tank in real time.

According to another embodiment of the present invention, in the ballast water treatment system capable of precisely measuring the oxidizer concentration according to the present invention, the concentration calculator collects data on the oxidizer concentration output from the oxidizer sensor, A data collection module for collecting data on the oxidant concentration and the value of the oxidant concentration and the value of the ballast water flow rate per hour; A real time flow rate calculation module for calculating the flow rate of the ballast water stored in the ballast tank in real time by summing up the values of the ballast water flow rates by time calculated by the data collection module; And a real-time concentration calculation module for calculating the concentration of the oxidant contained in the ballast water stored in the ballast tank in real time using the value of the ballast water flow rate and the oxidant concentration value per hour calculated by the data collection module .

According to another embodiment of the present invention, a ballast water treatment system capable of precisely measuring an oxidizer concentration according to the present invention further comprises an inlet pipe for supplying ballast water to the ballast tank, And the sterilized water is supplied to the inlet pipe of the oxidant sensor and the water intake front side.

According to still another embodiment of the present invention, in the ballast water treatment system capable of precisely measuring the oxidizer concentration according to the present invention, the real time flow rate calculation module calculates the real time flow rate of the ballast water, The total amount A (t) of the ballast water is calculated by the following equation (1).

(1)

In Equation (1), f ₁ (t) is a function representing a value of a time-dependent flow rate with the time (t) calculated on the x-axis and the y-

According to another embodiment of the present invention, in the ballast water treatment system capable of precisely measuring the oxidant concentration according to the present invention, the real-time concentration calculation module calculates the concentration of the oxidant in the ballast water tank, which is stored in the ballast tank at a specific time t And the concentration (C (t)) of the oxidizing agent in the ballast water is calculated by the following equation (2).

(2)

In the equation (2), f ₂ (t) is a function representing the value of the oxidant concentration over time in which the x-axis estimated by the data collection module is time t and the y-

According to still another embodiment of the present invention, in the ballast water treatment system capable of precisely measuring the oxidant concentration according to the present invention, the ballast water treatment system is characterized in that the ballast water supplied to the ballast tank contains sterilizing water containing an oxidizing agent Wherein the controller compares the concentration of oxidizing agent calculated by the concentration calculating section with the reference oxidizing agent concentration required for treating the ballast water to determine whether the oxidizing agent concentration of the ballast water in the ballast tank is higher than the reference And a concentration control unit for controlling the oxidant supply unit to reach the oxidant concentration.

According to another embodiment of the present invention, in the ballast water treatment system capable of precisely measuring the oxidizer concentration according to the present invention, the concentration regulator compares the concentration of the oxidizing oxidizer calculated by the concentration calculating unit with the reference oxidizer concentration, A density comparison module for outputting the density information; Wherein when the concentration comparison module determines that the concentration of oxidizing agent exceeds the predetermined range of the reference oxidizing agent concentration, the oxidizing agent supply portion is controlled so that the oxidizing agent concentration of the ballast water stored in the ballasting tank reaches a certain range of the reference oxidizing agent concentration And the oxidant amount control module.

According to another embodiment of the present invention, a ballast water treatment system capable of precisely measuring an oxidizer concentration according to the present invention further comprises a neutralizer supply unit for supplying a neutralizer to the ballast water discharged from the ballast tank, A neutralizing agent control unit for controlling the operation of the neutralizing agent supply unit to neutralize the oxidizing agent remaining in the ballast water discharged from the ballast tank is added using the data of the concentration of the oxidizing agent calculated by the concentration calculating unit and the flow rate of the ballast water As shown in FIG.

According to another embodiment of the present invention, in the ballast water treatment system capable of precisely measuring the oxidant concentration according to the present invention, the neutralizer control unit controls the total amount of the ballast water supplied to the ballast water tank at the end of the ballasting process And a confirmation module for collecting and outputting the oxidant concentration at the end point from the concentration calculation section; A calculating module for calculating an amount of neutralizing agent to be supplied to the ballast water discharged from the ballast tank in consideration of the time for starting the data output from the checking module; And an operation module for controlling the neutralizing agent supply unit so that the amount of the neutralizing agent calculated by the calculation module is supplied to the ballast water discharged from the ballast tank.

According to another embodiment of the present invention, in the ballast water treatment system capable of precisely measuring the oxidant concentration according to the present invention, the estimation module calculates the amount (H (t _n )) of the neutralizer to be supplied by the following equation .

(3)

_{H (t n) = A (} t a) × C (t a) × E (t n), E (t n) = {f 3 (t a) -f 3 (t n)} / f 3 (t _a )

In the above equation 3 H (t _n) is a time interval at the time of from the end of the ballasting procedure D. ballasting is started (hereinafter referred to as "de-ballasting the starting time") when it has a t _n the discharge pipe (12 ) means the amount of neutralizing agent to be supplied to, and, a (t _a) is the total flow rate of the ballast water stored in a ballast tank (2) of the end point t _a of the ballasting procedure, C (t _a) the ballasting procedure end, and the time t the oxidizing agent concentration of the ballast water stored in a ballast tank (2) of _a of a, E (t _n) is de ballast tinggae time ballast reduction ratio of the oxidizing agent concentration of the number stored in the ballast tank (2) of the t _n and , f ₃ (t) is a ballasting process ends f ₃ as a function representing the value of the time-oxidant concentration (t _a) is the oxidizing agent concentration of the end of the ballasting procedure time t _a f ₃ (t _n) is de-ballasting after time Oxidant concentration at ting time t _n

The present invention can obtain the following effects by the above-described embodiment, the constitution described below, the combination, and the use relationship.

The present invention can accurately measure the concentration of an oxidizing agent in a ballast tank in which ballast water is stored in real time, thereby improving sterilization efficiency, economic efficiency, and environmental pollution.

In addition, since the concentration of the oxidant in the ballast tank is measured in real time by measuring the flow rate of the ballast water supplied to the ballast tank and the concentration of the oxidant contained in the ballast water in real time, There is an effect that can be accurately measured.

In addition, since the concentration of the oxidizing agent in the ballast tank can be known accurately in real time during the ballasting process, the present invention can control the oxidizing agent supply unit to easily adjust the concentration of the oxidizing agent in the ballast tank.

Further, since the concentration of the oxidizer finally stored in the ballast tank and the flow rate of the ballast water can be accurately determined, the amount of the ballast water to be supplied in the de-ballasting process in consideration of the time stored in the ballast tank The amount can be calculated.

1 is a block diagram of a ballast water treatment system in accordance with an embodiment of the present invention.
2 is a configuration diagram of a baitwater treatment system according to an embodiment of the present invention;
Figure 3 is a block diagram of the controller of Figure 1;
FIGS. 4 to 6 are reference views for explaining an operation process of the ballast water treatment system according to an embodiment of the present invention; FIG.

Hereinafter, a ballast water treatment system capable of precisely measuring an oxidizer concentration according to the present invention will be described in detail with reference to the accompanying drawings. It is to be noted that the same elements among the drawings are denoted by the same reference numerals whenever possible. Unless defined otherwise, all terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs and, if conflict with the meaning of the terms used herein, It follows the definition used in the specification.

FIG. 1 is a block diagram of a ballast water treatment system according to an embodiment of the present invention. FIG. 2 is a block diagram of a Bast water treatment system according to an embodiment of the present invention. And FIGS. 4 to 6 are reference views for explaining the operation of the ballast water treatment system according to an embodiment of the present invention.

1 to 6, a ballast water treatment system capable of precisely measuring an oxidizer concentration according to an embodiment of the present invention will be described. The ballast water treatment system includes a mainstream pipe 1 through which ballast water is transferred, An oxidant supply unit 3 for drawing and electrolyzing a part of the ballast water from the main stream pipe 1 to generate sterilizing water containing an oxidizing agent and supplying it to the ballast water, A neutralizing liquid supply unit 4 supplied with a neutralizing agent for removing the oxidizing agent remaining in the ballast water discharged from the ballast tank 2, and a controller 5 for controlling the operation of the processing system.

The main stream pipe (1) is a pipe through which the main stream of ballast water moves, and includes an inlet pipe (11) and a discharge pipe (12).

The inflow pipe 11 is a tube for supplying the ballast water introduced into the ship to the ballast tank 2. The inflow pipe 11 is provided with sterilization water containing an oxidant generated by the oxidant supply unit 3 Which will be described later in detail. The intake pipe 11 is provided with a water intake pump 111, an oxidizer sensor 112, a water intake meter 113, and a water intake valve 114.

The water intake pump 111 is installed at the tip side of the inflow pipe 1 and operates under the control of the controller 5 to transport the ballast water through the inflow pipe 11. The water intake pump 11, The flow rate of the ballast water transported through the inflow pipe 11 can be controlled by controlling the intensity of the output.

The oxidant sensor 112 is a sensor installed on the rear side of the inflow pipe 2 to measure the concentration of the oxidant present in the ballast water mixed with sterilized water in real time and measures the concentration of residual chlorine contained in the ballast water To calculate the concentration of the oxidizing agent. The value measured by the density sensor 12 is transmitted to the controller 5.

The water intake meter 113 is configured to measure the flow rate of the ballast water supplied to the ballast tank 2 through the inlet pipe 1 on the inlet pipe 1 at the rear side of the oxidizer sensor 112 , And the value measured by the water intake amount meter 14 is transmitted to the controller 5.

The intake valve 114 is installed in the inlet pipe 1 on the rear side of the water intake meter 113 and controls the flow rate of the ballast water flowing through the inlet pipe 1 under the control of the controller 5 , A 2-way valve of a ball valve type, or the like can be used. The oxidant sensor 112 and the water intake meter 113 are installed as close as possible to the end of the inflow pipe 11 or the ballast tank 2 and the oxidant sensor 112 and the water intake meter 113 perform real- And the data transmitted to the controller 5 is used to calculate the ballast flow rate and the oxidant concentration in the ballast tank 2, which will be described in detail later.

The discharge pipe (12) is connected to the ballast tank (2) to discharge the ballast water to the outside of the ship. Since the oxidant remains in the ballast water discharged from the ballast tank (2) The neutralizing agent is supplied by the neutralizing agent supply unit 4, which will be described in detail below. The discharge pipe (12) is provided with a drain pump (121).

The drain pump 121 is installed in the discharge pipe 12 and operates under the control of the controller 5 to transport the ballast water through the discharge pipe 12.

The ballast tank 2 is connected to the end of the inflow pipe 11 and stores ballast water mixed with sterilizing water containing an oxidant transported through the inflow pipe 11. For example, And may be formed of various materials such as SUS304 or SPV300. The ballast water stored in the ballast tank (2) is discharged to the outside of the ship through the discharge pipe (12).

The oxidant supply unit 3 draws a part of the ballast water from the inflow pipe 11 and electrolyzes the electrolytic water to generate sterilized water containing an oxidizing agent and supplies the sterilized water to the inflow pipe 11, An electrolysis section 32, an oxidant supply pipe 33, and the like.

The outlet pipe 31 is connected to the rear side of the intake valve 111 and the inlet pipe 11 on the front side of the oxidizer sensor 122 so that a part of the ballast water flowing through the inlet pipe 11 flows into the electric A withdrawal valve 311, a withdrawal pump 312, a withdrawal meter 313, and the like are installed in the withdrawal pipe 31. The withdrawal valve 311 is connected to the withdrawal port 311,

The take-out valve 311 is provided at the tip end side of the take-out tube 31 and operates under the control of the controller 5 to adjust the flow rate of the ballast water flowing through the take-out tube 31.

The drawing pump 312 is installed on the drawing pipe 31 on the rear side of the drawing valve 311 and operates under the control of the controller 5 to transport part of the ballast water through the drawing tube 31.

The drawing amount meter 313 is configured to measure the flow rate of the fluid supplied to the electrolytic unit 32 through the take-out pipe 31 provided on the take-out pipe 31 on the rear side of the take-out pump 312 , And the value measured by the draw-out meter (313) is transmitted to the controller (5).

The electrolytic unit 32 includes an electrolytic bath 321, a rectifier 322, and the like, configured to receive ballast water from the take-out pipe 31 and electrolyze the electrolytic water to generate sterilizing water containing an oxidizing agent.

The electrolytic bath 321 is configured to receive and electrolyze ballast water. Since the ballast water has a predetermined salinity, an oxidizing agent such as sodium chloride, sodium hypochlorite, and sodium hypochlorite, which acts as a bactericide for electrolyzing the ballast water, Is generated.

The rectifier 322 converts the AC voltage to a DC voltage and supplies the DC voltage to the electrolytic bath 321. The intensity of the voltage supplied to the electrolytic bath 321 under the control of the controller 5 is changed, . The controller 5 controls the rectifier 322 in accordance with the concentration of the oxidizing agent in the ballast tank 2 to change the amount of electric power supplied to the electrolytic bath 321 or to control the withdrawal valve 311 The amount of the ballast water supplied to the electrolytic bath 321 is changed to control the amount of sterilized water containing the oxidant.

The oxidant supply pipe 33 is configured to supply sterilized water containing an oxidant generated in the electrolytic bath 321 to the inflow pipe 1. The end of the oxidant supply pipe 33 is connected to a water intake pump 111 Is connected to the inlet pipe (1) between the pipe (31). In the sterilized water supplied to the inflow pipe 1, the oxidizing agent acts as a bactericide to sterilize the ballast water, such as sodium hypochlorite, sodium hypochlorite, and sodium hypochlorite. The oxidant supply pipe 33 is provided with a supply valve 331 for controlling the flow rate of sterilizing water flowing through the sterilization water supply pipe 33 under the control of the controller 5.

The neutralizing agent supply unit 4 includes a neutralizing agent tank 41, a neutralizing agent supply pipe 42, a neutralization pump 43, and the like, configured to supply neutralizing agent to the ballast water discharged from the ballast tank 2. When a certain amount of oxidizing agent remains in the ballast water discharged from the ballast tank 2 and the ballast water is discharged to the outside of the ship without neutralization, the marine ecosystem is destroyed, and the neutralizing agent is supplied to the ballast water, The next ballast water is discharged to the outside of the ship. The controller 5 calculates the amount of the neutralizing agent supplied by the neutralizing agent supply unit 4 in consideration of the flow rate of the ballast tank 2, the concentration of the oxidizing agent, and the stored time of the ballast water, .

In the neutralizer tank 41, a neutralizing agent for neutralizing the oxidizing agent is dissolved and stored. As the neutralizing agent, sodium sulfite, oxalic acid, and sodium thiosulfate may be used.

The neutralizer supply pipe 42 is connected to the neutralizer tank 41 at one end and connected to the discharge pipe 12 at the other end to supply the neutralizer.

The neutralization pump 43 is installed in the neutralizing agent supply pipe 42 and operates under the control of the controller 5 to transport the neutralizing agent through the neutralizing agent supply pipe 42. The controller 5 controls the operation of the neutralization pump 43 to control the amount of neutralizing liquid supplied to the discharge pipe 12.

The controller 5 controls the overall operation of the ballast water treatment system and includes a transmission and reception unit 51, a balusting operation unit 52, a concentration determination unit 53, a concentration control unit 54, A display unit 55, a storage unit 56, a display unit 57, a control unit 58, and the like.

The transceiver unit 51 receives the data measured and transmitted by the oxidizer sensor 112, the water intake amount meter 113 and the withdrawing water meter 313 and controls the ballasting operation unit 52, the concentration calculation unit 53, The control unit 54, the neutralizer control unit 55, the display unit 57, and the like.

When the operation signal of the ballast water treatment system is input by the user, the ballasting operation unit 52 opens the intake valve 114 and operates the water intake pump 111 to supply the ballast water into the inlet pipe 11 , The oxidant supply part (3) is operated to supply sterilized water containing an oxidizing agent to the inflow pipe (11). The ballast water mixed with sterilization water is stored in the ballast tank 2 by operation of the ballasting operation unit 52. The process of introducing the sterilization water mixed with the ballast water into the ballast tank 2 will be described below as a ballasting process Quot; At the end of the ballasting process, the ballast water corresponding to the predetermined target amount is stored in the ballast tank 2.

The concentration calculation unit 53 is configured to measure the concentration of the oxidant in the ballast water stored in the ballast tank 2 during the ballasting process. The data collection module 531, the real time flow rate calculation module 532, A real-time concentration calculation module 533, and the like.

The data acquisition module 531 collects data on the oxidant concentration output from the oxidant sensor 112 and collects data on the flow rate output from the water intake amount meter 113 to calculate the concentration of the oxidant concentration Value and the ballast water flow rate. The value of the hourly ballast water flow rate can be expressed as a function of f ₁ (t) with x-axis as time (t) and y-axis as flow rate (l), as shown in Fig. The graph of FIG. 4 (a) shows the value of the ballast water flow rate by time of one example when the ballast water treatment system operates normally, and the graph of FIG. 4 (b) When the flow rate of the ballast water flowing into the ballast tank (2) is not constant in the course of the operation, the value of the ballast water flow rate in one example is shown. The value of the oxidizer concentration over time can be expressed as a function of f ₂ (t) with x axis as time t and y axis as oxidizer concentration (ppm), as shown in Fig. The graph of FIG. 5 (a) shows the value of the oxidant concentration over time when the ballast water treatment system operates normally, and the graph of FIG. 5 (b) When the amount of the oxidizing agent supplied to the pipe 11 is not constant, it indicates the value of the oxidizing agent concentration over time.

The real time flow rate calculation module 532 calculates the flow rate of the ballast water stored in the ballast tank 2 in real time by summing up the values of the ballast water flow rates by time calculated by the data collection module 531. The total amount A (t) of the ballast water stored in the ballast tank 2 until a specific time t after the ballasting process is started is calculated by the following equation (1).

The real-time concentration calculating module 533 calculates the concentration of the oxidizing agent contained in the ballast water stored in the ballast tank 2 in real time using the values of the ballast water flow rate and the oxidizing agent concentration per hour calculated by the data collecting module 531, Is calculated. The concentration (C (t)) of the oxidizing agent of the ballast water stored in the ballast tank 2 at the specific time t after the ballasting process is started is calculated by the following equation (2).

The concentration adjusting unit 54 adjusts the concentration of the oxidizing agent calculated by the concentration calculating unit 53 and the predetermined concentration of the oxidizing agent required to treat the ballast water The concentration comparing module 541 and the oxidant amount control module 541 are configured to control the oxidant supplier 3 so that the oxidant concentration in the ballast tank 2 reaches the reference oxidant concentration, 542, and the like.

The concentration comparison module 541 compares the concentration of oxidizing oxidizing agent calculated by the concentration calculating part 53 with the reference oxidizing agent concentration and outputs the result thereof.

The oxidizing agent amount control module 542 controls the oxidizing agent supply part 3 when the concentration comparing module 541 determines that the oxidizing oxidizing agent concentration exceeds a predetermined range of the reference oxidizing agent concentration, ) To reach a certain range of the reference oxidant concentration. For example, when the oxidizing agent concentration is lower than the lower limit of the reference oxidizing agent concentration, the oxidant amount control module 542 controls the rectifier 322 to increase the amount of electric power supplied to the electrolytic bath 321, The amount of the ballast water supplied to the electrolytic bath 321 is increased by controlling the valve 311 to increase the amount of sterilized water containing the oxidant.

The neutralizer adjusting unit 55 neutralizes the oxidizing agent remaining in the ballast water discharged from the ballast tank 2 by using the data on the concentration of the oxidizing agent and the flow rate of the ballast water calculated by the concentration calculating unit 53 And includes an authentication module 551, a calculation module 552, an operation module 553, and the like, which are configured to control the operation of the neutralizing agent supply unit 4. [ The process of discharging the ballast water stored in the ballast tank (2) to the outside of the ship when the luggage is loaded on a ship equipped with the ballast water treatment system is referred to as a de-ballasting process . As shown in FIG. 6, the concentration of the oxidizing agent decreases with time after the ballasting process is finished. The neutralizing agent adjusting unit 55 adjusts the concentration of the ballast water in the ballast tank 2 ), The amount of neutralizing agent to be supplied is calculated.

The confirmation module 551 determines whether or not the total flow rate of the ballast water supplied to the ballast tank 2 at the time of ending the ballasting process, that is, when the ballast water no longer flows into the ballast tank 2, And collects and outputs the concentration from the concentration-

The calculation module 552 may supply the data output from the confirmation module 551 to the discharge pipe 12 in consideration of the time interval t _n at which the de-ballasting starts from the end of the ballasting process Calculate the amount of neutralizer to be used. The calculation module 552 calculates the amount H (t _n ) of the neutralizing agent to be supplied by the following equation (3).

(3)

_{H (t n) = A (} t a) × C (t a) × E (t n), E (t n) = {f 3 (t a) -f 3 (t n)} / f 3 (t _a )

In the above equation 3 H (t _n) is a time interval at the time of from the end of the ballasting procedure D. ballasting is started (hereinafter referred to as "de-ballasting the starting time") when it has a t _n the discharge pipe (12 ) means the amount of neutralizing agent to be supplied to, and, a (t _a) is the total flow rate of the ballast water stored in a ballast tank (2) of the end point t _a of the ballasting procedure, C (t _a) the ballasting procedure end, and the time t the oxidizing agent concentration of the ballast water stored in a ballast tank (2) of _a of a, E (t _n) is de ballast tinggae time ballast reduction ratio of the oxidizing agent concentration of the number stored in the ballast tank (2) of the t _n and , f ₃ (t) is a ballasting process ends f ₃ as a function representing the value of the time-oxidant concentration (t _a) is the oxidizing agent concentration of the end of the ballasting procedure time t _a f ₃ (t _n) is de-ballasting after time Is the oxidant concentration at the ting time t _n .

The operation module 553 controls the neutralizing agent supply unit 4 so that the amount of the neutralizing agent calculated by the calculation module 552 is supplied to the ballast water discharged from the ballast tank 2.

As shown in FIG. 6, the storage unit 56 stores data representing the oxidant concentration by time after the end of the ballasting process, to t), and can be expressed as a function of f ₃ (t) of the y-axis as the oxidant concentration (ppm). The function of f ₃ (t) can be obtained experimentally.

The display unit 57 displays data calculated by the concentration calculation unit 53 on the display 6 and the control unit 58 controls the overall operation of the controller 5. [

The ballast water treatment system can know the flow rate of the ballast water stored in the ballast tank 2 at a specific point in the ballasting process and the concentration of the oxidant mixed in the ballast water through the concentration calculation unit 53, The concentration of the oxidizing agent in the ballast tank can be easily controlled to be the reference oxidizing agent concentration by controlling the oxidizing agent supply part 3 and the amount of the neutralizing agent to be supplied in the dibaling step can be accurately calculated.

The display 7 displays the flow rate of the ballast water in the ballast tank 2 calculated by the controller 6 and the concentration of the oxidizer in real time. The safety of the entire system can be improved.

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, Should be interpreted as falling within the scope of.

1: Mainstream pipe 11: Inflow pipe 12:
2: Ballast tank 3: Oxidizing agent supply unit 31: Drawing tube
32: electrolysis section 33: oxidant supply pipe 4: neutralizing agent supply section
41: neutralizer tank 42: neutralizer feed pipe 43: neutralization pump
5: controller 51: transmitting / receiving unit 52: balancing unit
53: Concentration estimating unit 54: Concentration regulating unit 55: Neutralizing agent regulating unit
56: storage unit 57: display unit 58: control unit
6: Display

Claims (10)

A ballast tank for storing ballast water containing sterilizing water containing an oxidizing agent; A water intake meter installed at an end of the inflow pipe for measuring and outputting the flow rate of the ballast water supplied to the ballast tank in real time; An oxidant sensor installed at an end of the inlet pipe for real time measuring the concentration of the oxidant present in the ballast water supplied to the ballast tank; And a controller for controlling overall operation of the ballast water treatment system,
Wherein the controller calculates a total flow rate A (t) of the ballast water stored in the ballast tank up to a specific time t after the balancing process is started based on the data on the flow rate output by the water intake system, A real-time concentration calculation module for calculating the concentration (C (t)) of the oxidant in the ballast water stored in the ballast tank until a specific time t after the ballasting process is started based on the data on the oxidant concentration output from the oxidant sensor A concentration concentration unit that includes: And a neutralizing agent adjuster for neutralizing the oxidizing agent remaining in the ballast water discharged from the ballast tank
Checking module outputting to the concentration collected from the calculation unit for the neutralizing agent control unit the total flow rate A (t _a) and the oxidizing agent concentration C (t _a) of ballast stored in the ballast tanks, at the end (t _a) of the ballasting procedure and; And a calculating module for calculating the amount (H (t _n )) of the neutralizing agent to be supplied to the ballast water discharged in the dibaling step,
The calculation module to the total flow rate A (t _a), the oxidizer concentration C (t _a) and the end (t _a) from di ballasting start time said ballast tank (2) to (t _n) of the ballasting procedure (H (t _n )) of the neutralizing agent in consideration of the reduction ratio (E (t _n )) of the oxidizing agent concentration of the stored ballast water to reflect the lowering of the oxidizing agent concentration over time in the ballast tank Wherein the amount of the neutralizing agent (H (t _n )) is calculated. The method according to claim 1,
The ballast water treatment system may further include a neutralizer supply unit for supplying a neutralizer to the ballast water discharged from the ballast tank,
The concentration calculation unit collects data on the flow rate output by the water intake system, calculates a value of the ballast water flow rate by time, and transmits the data to the real time flow rate calculation module. The concentration data is collected by the oxidant sensor, And a data collection module for calculating a concentration value of the concentration of the oxidizing agent and transmitting it to the real-time concentration calculation module. 3. The process according to claim 2,
Further comprising an operation module for controlling the neutralizing agent supply unit so that the amount of the neutralizing agent calculated by the calculating module is supplied to the ballast water discharged from the ballast tank. 4. The method of claim 3, wherein the real-time flow rate calculation module
Wherein the total amount A (t) of the ballast water stored in the ballast tank is calculated by the following equation (1).
(1)

In Equation (1), f ₁ (t) is a function representing a value of a time-dependent flow rate with the time (t) calculated on the x-axis and the y- 5. The apparatus of claim 4, wherein the real-time concentration calculation module
Wherein the concentration (C (t)) of the oxidant in the ballast water stored in the ballast tank is calculated by the following equation (2).
(2)

In the equation (2), f ₂ (t) is a function representing the value of the oxidant concentration over time in which the x-axis estimated by the data collection module is time t and the y- 6. The apparatus of claim 5,
And the amount (H (t _n )) of the neutralizing agent to be supplied is calculated by the following equation (3).
(3)
_{H (t n) = A (} t a) × C (t a) × E (t n), E (t n) = {f 3 (t a) -f 3 (t n)} / f 3 (t _a )
In the above Equation _3, f 3 (t) is a ballasting process f ₃ as a function representing the value of the end time oxidant concentration after the time (t _a) is the oxidizing agent concentration of the end of the ballasting procedure time t _a f ₃ (t _n ) is the oxidant concentration at the divalent tinging time t _n 7. The method according to any one of claims 1 to 6,
The ballast water treatment system may further include an oxidant supply unit for supplying sterilizing water containing an oxidant to the ballast water supplied to the ballast tank,
The controller compares the concentration of oxidizing agent calculated by the concentration calculating section with the reference oxidizing agent concentration required for treating the ballast water to control the oxidizing agent supply section so that the oxidizing agent concentration of the ballast water in the ballast tank reaches the reference oxidizing agent concentration Wherein the concentration control unit further comprises a concentration adjusting unit for adjusting the concentration of the oxidizing agent. 8. The apparatus of claim 7, wherein the concentration adjuster
A concentration comparison module for comparing the concentration of the oxidizing oxidizing agent calculated by the concentration calculating section with the reference oxidizing agent concentration and outputting the result; Wherein when the concentration comparison module determines that the concentration of oxidizing agent exceeds the predetermined range of the reference oxidizing agent concentration, the oxidizing agent supply portion is controlled so that the oxidizing agent concentration of the ballast water stored in the ballasting tank reaches a certain range of the reference oxidizing agent concentration Wherein the oxidizing agent amount control module is configured to control the concentration of the oxidizing agent.
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