KR101168914B1 - Ballast water treatment equipment for ship - Google Patents

Abstract

PURPOSE: A ballast water treating apparatus is provided to prevent the generation of secondary contamination while discharging ballast water by preventing the property change of seawater due to high temperatures. CONSTITUTION: A ballast water treating apparatus includes a pump(10), a ballast water tank(70), a pipe, a filtering unit(20), an impeller(40), a plurality of electrode rods(83), an alternative current(AC) transformer(81), a temperature sensor, and a controlling unit. The pipe connects a seawater inlet(2), an outlet(4), the pump, and the ballast water tank. The electrode rods are arranged in the ballast water tank in order to generate electric field in ballast water. The AC transformer is in connection with the electrode rods. The temperature sensor is arranged in the ballast water tank to measure the temperature of the ballast water. The controlling unit controls voltages from the AC transformer to maintain the pre-determined temperature of the ballast water.

Description

Ballast water treatment equipment for ship {

The present invention relates to a ballast water treatment apparatus.

In general, cargo ships transported by sea should be operated one-way, except for ships reciprocating for the exchange of similar cargoes. In order to improve performance, ballast water is introduced into the ship to navigate the ship in a state of equilibrium.

However, in ballast water, larvae of various organisms, including bacteria, and adults of many sea and coastal plants and animals survive. And when ballast water is discharged, most of the organisms in the ballast water will not survive, but some will adapt and thrive in the new environment. The survival and prosperity of non-indigenous species in these different oceans can lead to serious ecosystem and sanitation disruptions in the environment in which they are accepted.

Accordingly, the International Maritime Organization (IMO) has enacted international legislation to regulate the discharge of ballast water and to reduce the risk of non-end species caused by ballast water. Vessels being built or to be constructed above must be equipped with equipment for treatment of ballast water.

On the other hand, as a device for treating ballast water, Republic of Korea Patent No. 10-0597254 has a baffle device is formed on the inlet side, a sensor for measuring the residual chlorine is provided on the outlet side and in the middle of the baffle device and sensor Since the electrolytic module is provided in the chamber to be formed, it is disclosed to be able to sterilize bacteria and organic matter in the ballast water by electrolysis using DC current.

In addition, Korean Patent Registration No. 10-0663332 and Korean Patent Application Publication No. 10-2005-0063460 also disclose an apparatus for sterilizing ballast water of a ship by electrolysis by applying a direct current in a separate chamber.

However, in the case of electrolysis using DC power, hypochlorous acid (PH 5,5 ~ 6.5) is generated during electrochemical decomposition of brine, and it is sterilized in the ballast water with high acidity. There is a risk of contamination, and trihalomethanes and free radicals generated during the decomposition process may have other effects on marine life if they are discarded in seawater.

In addition, for electrochemical decomposition, a chamber for a separate electrolysis should be provided on the flow path through which the ballast water flows, and since the ballast water is continuously sterilized by supplying the ballast water through a chamber for electrolysis, a separate chamber and Accessory equipment must be provided. Therefore, the manufacturing and equipment costs are increased, as well as the maintenance costs are increased, and the space efficiency of the ship is taken down as much as the space of the chamber.

In addition, various sterilization systems have already been developed such as sterilization by irradiating with UV rays or sterilizing by ozone, but all of them have problems such as inferior sterilization efficiency or secondary pollution after sterilization.

An embodiment of the present invention is provided with an electrode rod inside the ballast tank in which ballast water is introduced and stored, the electrode rod includes an AC transformer for supplying an alternating current of 0-25V to the electrode rod, the balance inside the ballast tank It is an object of the present invention to provide a ballast water treatment apparatus for controlling the amount of voltage or current so that the water temperature can be kept constant.

The ballast water treatment apparatus according to the present embodiment includes a pump for supplying and discharging seawater that can be used as ballast water of a ship; A ballast tank in which ballast water supplied by the pump is stored to control the balance of the ship; A pipe connecting the inlet to and out of the inlet and outlet of the seawater and the pump and the ballast tank, which is opened and closed by a plurality of valves to guide the flow of the seawater; A filtering device provided on one side of the pipe and filtering foreign substances and organisms of seawater supplied to the ballast tank; An impeller provided on one side of the pipe and provided with a plurality of wings rotating at high speed to inactivate organisms contained in the seawater passing through the filtering device by a rotational force; A plurality of electrode rods provided inside the ballast tank and forming an electric field in the ballast water; An AC transformer connected to the electrode and applying an alternating current of 1-25V to the electrode; A temperature sensor provided inside the ballast tank and measuring a temperature of ballast water; And a control device for controlling the operation of the AC transformer according to the temperature of the temperature sensor, wherein the control device adjusts the voltage supplied through the AC voltage generator according to the temperature detected by the temperature sensor. It is characterized in that to maintain the set temperature.

Between the AC transformer and the electrode rod is characterized in that a switch for turning on or off the current supply to the electrode rod according to the temperature detected by the temperature sensor.

A variable electrical resistor is provided between the AC transformer and the electrode rod to adjust the amount of current supplied to the electrode rod according to the temperature sensed by the temperature sensor.

The filtration device is characterized in that the filtration filter for filtering the organism 50㎛ or more inside.

The inside of the filtration device is characterized in that the ultrasonic wave diffusion device for diffusing the ultrasonic wave generated in the ultrasonic generator in the filtration device to prevent the sterilization of microorganisms in the filtration device and the attachment of the microorganisms.

The inside of the filtering device is formed of a zinc material, characterized in that provided with a corrosion preventing member for sterilizing microorganisms in the filtering device and prevents corrosion inside.

One side of the pipe is characterized in that the orifice is provided to adjust the flow rate of the sea water past the impeller so that the cavitation phenomenon occurs by the pressure difference.

One side of the pipe is characterized in that it is provided with a UV device for sterilizing the organism by irradiating the UV rays to the seawater flowing through the impeller.

The pipe is further provided with a foreign material removal device for removing the foreign matter of the filtration device, the foreign material removal device, the auxiliary pump for the high speed inlet and outlet of sea water; A first flow path connected to the auxiliary pump to which seawater flows; A second flow passage for discharging seawater introduced in communication with the water outlet portion; A third flow passage connected with the filtration device; A valve provided in the third flow path to open and close the third flow path, and connecting the first flow path to the second flow path and the third flow path, respectively, and a gene generated during high-speed movement of seawater through the first flow path and the second flow path. It characterized in that it comprises an ejector for discharging the foreign matter of the filtering device through the third flow path by pneumatic or negative pressure.

The pipe is provided with a plurality of valves, characterized in that the ballast tank is provided so that the ballast tank is discharged to the water outlet through the filter and the impeller along the same pipe as the pipe received by the switching of the valve. do.

The ballast water treatment apparatus according to the present embodiment can expect the following effects.

The ballast water treatment apparatus according to the present embodiment does not need a separate tank for sterilization, thereby reducing facility costs and, as a result, minimizing the space occupied by the ship, thereby increasing space efficiency. . In addition, by being able to sterilize the ballast water in the ballast during the voyage of the ship it is possible to have a sufficient time has the effect of improving the time and cost efficiency.

In addition, the ballast water of the ship can be sterilized by using a low-voltage alternating current, which enables effective sterilization with less energy, and prevents secondary pollution by preventing additional pollutants from occurring during the treatment process. Safe sterilization has the advantage of being possible.

In particular, a temperature sensor is provided inside the ballast tank, and the temperature of the ballast water is not increased by adjusting the voltage supplied from the AC transformer or adjusting the current through the resistor according to the temperature of the ballast water detected by the temperature sensor. To remain constant. Therefore, the characteristics of the seawater can be maintained, it is possible to prevent the secondary pollution that can occur when the discharge of the ballast water by preventing the change in the characteristics of the seawater due to the high temperature.

In addition, the ballast water of the ship is shared with the pipes introduced into the ballast tank and the pipes discharged from the ballast tank after being sterilized to minimize the equipment cost and maximize the space efficiency by minimizing the space occupied in the ship. .

In addition, the ballast water of the first incoming vessel may pass through the filter, the ultrasonic diffuser and the pulverizer in order to physically inactivate or remove the organic matter in the ballast water, and thereby, the first sterilization or sterilization in the ballast tank. By being able to pretreatment to achieve this more effectively, the sterilization performance can be greatly improved.

In addition, a temperature sensor is provided inside the ballast tank, and according to the temperature value measured by the temperature sensor, it is possible to adjust the current value supplied to the ballast tank or to adjust the application of voltage so that the ballast water does not rise above the set temperature. Therefore, there is an advantage that can minimize the secondary pollution by the ballast water discharged by minimizing the change in the composition of sea water by temperature.

1 is a view showing the configuration of the ballast water treatment apparatus according to the present embodiment.
2 is a view showing a process in which ballast water is supplied to a ballast tank of the ballast water treatment apparatus.
3 is a view illustrating a process of discharging the sterilized ballast water in the ballast tank.

Hereinafter, specific embodiments of the present invention will be described in detail with reference to the drawings. However, the present invention is not limited to the embodiments in which the spirit of the present invention is presented, and other embodiments included in the spirit of the present invention or other inventions which are degenerate by addition, modification, or deletion of other components are readily available. Can suggest.

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

Referring to Figure 1, the ballast water treatment apparatus 1 according to an embodiment of the present invention, the ballast tank 70 is provided for the balance and stability of the ship in the interior of the ship and a plurality of connected thereto It may be configured to include a configuration and the like for forming an electric field inside the ballast tank.

In detail, the ballast water treatment apparatus 1 is provided with an inlet part 2 through which seawater to be used as ballast water from the sea, and the inlet part 2 is provided with a strainer 3 for preventing the inflow of foreign substances. Can be. The water inlet 2 and the strainer 3 may be configured in plural, and the pipes connected to the water inlet 2 may be connected to the pump 10 to allow seawater to flow into the filtration device 20.

The filtration device 20 is configured to filter or filter the incoming seawater primarily or sterilize it physically. To this end, the filtration device 20 is formed to have a predetermined volume, but is formed in a size that can be equipped with an ultrasonic diffusion device 22 and a filtration filter 21 for filtering seawater. Therefore, the size of the filtration device 20 may be formed to a size that can be temporarily stored and passed through the seawater introduced in a very small size compared to the size of the entire device.

The filtration filter 21 is provided at the inlet side of the filtration device 20. The filtration filter 21 is for filtering an organism having a size of 50 μm or more among the organisms contained in the seawater flowing through the pump 10, and organic material that is difficult to be sterilized physically in the ballast tank 70. It is configured to filter them.

In addition, the ultrasonic diffusion device 22 may be provided inside the filtration device 20. The ultrasonic diffusion device 22 disinfects the microorganisms contained in the water passing through the filtration device 20 by ultrasonic waves generated by the ultrasonic generator 221 in the seawater inside the filtration device 20. It becomes possible.

In addition, by dropping the organic matter or foreign matter stuck to the filtration filter 21 inside the filtration device 20 by vibration to easily remove the foreign matter to maintain the performance of the filtration device 20 as well as the ballast water It is configured to prevent contamination during the discharge. To this end, the ultrasonic diffusion device 22 may be disposed at a position close to the inlet side of the filtration device 20 and the filtration filter 21, and a plurality of the ultrasonic diffusion devices 22 may be provided as necessary. have.

In addition, the filtration device 20 may be formed with a corrosion preventing member 23 formed of a zinc material. The corrosion preventing member 23 is formed of a zinc material and reacts with water in the filtration device 20 to generate hydrogen peroxide. Therefore, it is possible to prevent the growth of microorganisms or E. coli in the interior of the filtration device 20, it is possible to reduce the contamination of the equipment by preventing the corrosion of the scale. The corrosion preventing member 23 may be formed by coating in the interior of the filtering device 20, or may be configured in various forms such as attached to the inside.

In addition, the filtration device 20 may be provided with a pressure sensor 24. The pressure sensor 24 may be provided inside the filtration device 20 or at the inlet and outlet of the filtration device 20, and detects the pressure sensor 24 according to pressure changes at the inlet and outlet sides of the filtration device 20. The ultrasonic diffusion device 22 and the impeller 40 to transmit a signal so that the automatic operation. That is, by confirming the inflow of seawater and ballast water into the filtration device 20 is configured to determine the operation of the ultrasonic diffusion device 22, the impeller 40, the yuv device 60 and the like.

On the other hand, the foreign matter removing device 30 may be connected to the filtration device 20. The foreign material removing device is a first flow path 31 for the high-speed inflow of seawater by a separate pump (not shown), the second flow path 32 and the filtration device 20 for the discharge through the water outlet (4) The third flow path 33 connected to the side), the ejector 34 for sucking the seawater containing foreign matter on the filtration device side by the pressure difference during the movement of the seawater and provided on the third flow path of the foreign material removal device 30 It may be configured to include a valve 35 for opening the third flow path 33 during operation.

The debris removal device 30 is for effectively removing debris trapped in the filtration device 20 and the filtration filter 21, and the seawater through the first flow path 31 and the second flow path (32) The foreign substances caught on the filtration filter 21 can be removed and discharged by a vacuum or a negative pressure on the third flow path 33 on the side of the filtration device 20 generated at the high speed.

In detail, the filtration device 20 includes a first flow path 31 through which seawater for cleaning is introduced. The first flow passage 31 is branched by the ejector 34 and connected to the filtration apparatus 20, and the other side is connected to the water outlet 4 or the water outlet 4 where seawater is discharged. It is connected with the flow path 32. If necessary, a separate pump may be provided on the first flow passage 31 or the second flow passage 32.

In the general situation of inflow of seawater and ballast water to fill the ballast tank 70, the pump may be stopped and the valve 35 may be closed. In such a state, the cleaning operation may not be performed. do.

In order to clean the filtration device 20 for the discharge of ballast water or other flow paths other than the flow path constituting the foreign matter removal device 30 to close the filtration, the foreign matter is caught in the filtration filter 21. Prevent ballast water from entering the apparatus 20.

In this state, when the pump is driven and the seawater flowing through the first flow path 1 passes through the ejector 34 and moves to the water outlet part 4 through the second flow path 32 at a high speed. The third flow passage 33 connected to the filtration device 20 and the ejector 34 may generate a vacuum or a negative pressure relatively, and the filtration filter inside the filtration device 20 may be caused by such a pressure difference. The foreign matter attached to 21 may be introduced into the ejector 34 and discharged to the water outlet part 4 together with the seawater passing through the first flow path 31 and the second flow path 32. In addition, when the ultrasonic diffusion device 22 is operated together with the foreign matter removing device 30 for cleaning, the foreign matter inside the filtering device 20 may be more effectively removed.

In addition, an impeller 40 may be provided at an outlet side of the filtration device 20. The impeller allows the microorganism to be physically inactivated so that the cell membrane of the organism can be easily destroyed by alternating current. The impeller 40 is connected to the outlet side of the filtering device 20, and rotates inside the case 41 by driving a separate case 41, a motor 42, and the motor 42. It may be configured to include a wing 43.

The wings 43 may be formed to have about 30-50 feathers. That is, a plurality of wings 43 are continuously arranged on the same axis of rotation such that the plurality of wings 43 is rotated by the rotation of the motor 42. In addition, the blade 43 is connected to the motor is configured to be rotated at a high speed of 1,800rpm / min.

Therefore, the seawater passing through the filtration device 20 is rotated at a high speed by the high-speed rotation of the blade inside the impeller 40. In addition, the circular cell membranes of organic materials may be destroyed by the instantaneous high pressure generated by the strong centrifugal force and the rotational force in the impeller 40 and the generation and collision of bubbles. That is, organic matter inside the seawater passing through the impeller 40 is inactivated by breaking the cell membrane by a strong rotational force, and then becomes a state that can be more easily sterilized by an electric field formed in the ballast tank 70.

In addition, the impeller 40 is provided with a supply pipe 44 through which the washing water is supplied for cleaning the impeller 40, and the drain pipe 45 for discharging the washing water after the washing of the impeller 40 is completed. It may be further provided.

On the other hand, the orifice 50 may be provided on the outlet side of the impeller 40. The orifice 50 is configured to adjust the flow rate of the sea water discharged through the impeller 40. In detail, the orifice 50 is configured to maximize the effect of the centrifugal force by the impeller 40 so that the amount of water exiting the impeller 40 does not exceed the set value.

Accordingly, the water passing through the orifice 50 generates a pressure difference of about 0.5 bar pressure before and after the passage, and the instantaneous high pressure difference causes a bubble by causing caVitation in the flowing fluid. And the high pressure difference that occurs when this bubble is destroyed / dissipated makes an effective contribution to the inactivation of the organism.

In addition, a UV device 60 may be further provided on the flow path passing through the orifice 50. The yuv device 60 is provided on a flow path that is stably flow without cavitation phenomenon, is configured to sterilize organic matter in the sea water by irradiating the yuv light beams to the flowing sea water.

The flow path passing through the impeller 40, the orifice 50, and the yuv device 60 in turn is branched, one extending to the water outlet 4, and the other extending to the ballast tank 70. Valves may be provided in each of the flow paths to be branched, and the opening and closing may be selectively adjusted according to the moving direction of the ballast water, respectively.

A sampling port 5 is formed on the flow path extending from the orifice 50 and the UV device 60 to the water outlet 4, and a portion of the ballast water discharged through the sampling port 5. You can check the status by collecting. The sampling port 5 may be provided with a valve, and is configured to open and close the sampling port 5 by opening and closing the valve.

Among the flow paths passing through the orifice 50, the flow paths extending to the ballast tanks 70 may supply ballast water to the ballast tanks 70. In this case, when a plurality of ballast tanks 70 are provided, flow paths may be branched so that each of the plurality of ballast tanks 70 may have a structure in which seawater passing through the filtration device 20 may be supplied. There is.

On the other hand, the ballast water treatment device (1) may be provided with an AC transformer (81), a variable electrical resistor (82), an electrode rod (83) and wires connecting them.

In detail, the AC transformer 81 is for supplying power to the electrode rod 83 in the ballast tank 70 and receives AC 220V or AC 440V. actual use After converting the voltage to 1V-25V, 50 ~ 60Hz, it is configured to allow a current to flow inside the ballast tank 70 through the electrode rod 83.

At this time, the AC transformer 81 is configured to adjust the voltage flowing in accordance with the passage of time and the temperature of the ballast water so that the components of the seawater does not change during the sterilization operation to form an electric field for the required time in a stable state ballast water It can be configured to do so.

Meanwhile, a variable electrical resistor 82 may be provided between the AC transformer 81 and the wire connecting the electrode rod 83. The variable electrical resistor 82 is to adjust the amount of current through the variable electrical resistor 82 when the voltage is not adjusted through the AC transformer 81, the electric field is formed through the adjustment of the amount of current The ballast water temperature in the ballast tank 70 can be prevented from being altered by rising above the set temperature.

On the other hand, the electrode rod 83 is to be able to form an electric field by the current supplied through the AC transformer 81, may be provided inside the ballast tank 70, can be submerged in ballast water Can be arranged to be. The electrode rods 83 may be provided at various positions inside the top or side surfaces of the ballast tank 70, and may be configured to form an electric field in the ballast tank 70 accommodated in the ballast tank 70. At least one or more pairs of the electrode rods 83 are configured to evenly form an electric field in the entire inner region of the ballast tank 70.

When the electric field is formed around the electrode rod 83 by the current supplied by the AC transformer 81, the voltage in the ballast water becomes approximately 200 mV to 400 mV. Therefore, since the intrinsic voltage of the organic materials in the ballast water is 30 ~ 70mV, if a higher voltage is applied for a long time, the cell membrane may be irreversibly destroyed by the potential difference between the organic materials and the electric field. Therefore, organic matter and microorganisms present in the ballast water within the range of the electric field can be disinfected and the cell membrane is destroyed by a relatively high voltage electric field.

In detail, when the electric field is applied to the microorganisms, the plasma membrane is damaged by the electric shock, thereby losing the semipermeable membrane function. Prolonged exposure at a voltage of about 200 mV to 400 mV that is different from the body causes the function of the plasma membrane to be irreversible, thereby allowing microorganisms to be sterilized. The potential difference of the cell membrane is caused by the difference in ion concentration between the inside and outside of the cell membrane, and the ion concentration difference, that is, the gradient of ion concentration is changed under a newly applied electric field by electric current, affecting the cell membrane to sterilize microorganisms. In other words, when an electric field is applied to a microorganism by electric current, intracellular ions affect the cell membrane of the microorganism to form a hole in the cell membrane, which causes the cell contents to flow out of the cell, causing the cell to lose function and sterilizing the cell.

Typically, the electrical conductivity of seawater has an electrical conductivity of approximately 50 ms / cm, has a resistance value of approximately 20 Ω, and the formation of an electric field for sterilization can be effectively performed even in seawater having such a low electrical resistance value. As such, the seawater used as the ballast water has an electrical conductivity of at least 200 Ω or less, and the present invention forms an electric field in the ballast water of the ship, and the resistance of the sample may be limited to 200 Ω or less.

Meanwhile, a temperature sensor 71 may be provided inside the ballast tank 70. The temperature sensor 71 is configured to measure the ballast water temperature inside the ballast tank 70 and transmit it to the control device 90. Therefore, by sensing the temperature of water before and after delivering current to the ballast water, if the temperature is changed over a certain temperature, the voltage or current applied to the electrode is adjusted to maintain the temperature of the ballast water within the allowable limits to form an electric field by the current. So that the original seawater composition does not change.

The ballast water treatment device 1 includes a control device 90. The control device 90 includes the pump 10, the pressure sensor 24, the filtration device 20, the impeller 40, the AC transformer 81, the variable electrical resistor 82, and the temperature sensor 71. And a plurality of valves and the like are configured to control their operation.

That is, it is possible to control the operation of the ballast water flowing into the ballast tank 70 and the operation of the filtration device 20, the impeller 40, the UV device 60, etc., the path control for the movement of the ballast water To control the plurality of valves can be operated for.

In particular, the control device 90 may be transmitted to the temperature of the ballast water in the ballast tank 70 measured by the temperature sensor 71, when the ballast water is raised by the current, the alternating current By adjusting the voltage input through the transformer 81, or by adjusting the current value through the variable electrical resistor 82 to prevent the temperature of the ballast water rises above the set temperature.

On the other hand, as a method for controlling the temperature of the ballast water, there is a method to be able to adjust the voltage applied from the AC transformer 81 at a predetermined time interval to 1-25V. That is, the voltage applied to the first 1V is increased during the set time to increase to 25V, and when it reaches 25V, the voltage can be lowered and set back to 1V during the set time, and this process can be repeated periodically to maintain the set temperature. You can do that.

In addition, when the temperature of the ballast water rises despite the adjustment of the periodic input voltage of the AC transformer 81, the amount of current can be controlled by the operation of the variable electrical resistor 82, and the temperature of the ballast water. To keep it low. Of course, the variable electrical resistor 82 may be driven independently of the AC transformer 81.

Then, a separate switch 84 is provided on the wire to turn off the switch 84 to remove the electric field when the temperature of the ballast water is higher than or equal to the set temperature, and to switch the switch 84 when the temperature of the ballast water is lower than or equal to the set temperature. It may be formed to have a simple structure to turn on to regenerate the electric field.

Hereinafter, the operation of the ballast water treatment device having the configuration as described above will be described with reference to the drawings.

2 is a view showing a process in which ballast water is supplied to a ballast tank of the ballast water treatment apparatus. 3 is a view showing a process of discharging the sterilized ballast water in the ballast tank.

First, referring to FIG. 2, the process of introducing the ballast water into the ballast tank is as follows.

The ballast tank 70 is filled with seawater to be used as ballast water in order to maintain the balance of the ship and to maintain the driving performance. To this end, when the pump 10 is driven, seawater is introduced through the inlet portion 2.

When there are a plurality of inlets 2, seawater is introduced through a plurality of inlets 2, and foreign substances or large organic substances are filtered while passing through the strainer 3. The seawater passing through the strainer 3 flows along a flow path that is combined into one flow path and flows into the pump 10. Then, the seawater discharged through the pump 10 is supplied to the filtration device 20.

The seawater supplied to the filtration device 20 is filtered by the filtration filter 21 inside the filtration device 20. At this time, when the seawater supply to the inside of the filtering device 20 is detected by the pressure sensor 24 inside the filtering device 20, ultrasonic waves of 20kHz or more are wired through the ultrasonic wave generating device 221. By being transmitted to the ultrasonic diffusion device 22 installed before and after the internal filtration filter, it is possible to sterilize and remove organisms inside the seawater by ultrasonic waves.

The ballast water passing through the filtration device 20 is supplied to the impeller 40, and the vanes 43 are rotated by the driving of the impeller 40, and the plurality of vanes 43 is simultaneously rotated. As a result, the seawater passing through the impeller 40 rotates at a high speed so that the organisms inside the seawater can be inactivated by the rotation.

Meanwhile, the seawater passing through the impeller 40 passes through the orifice 50, and the flow rate of the seawater passing through the orifice 50 is controlled and the organism inside the seawater by the cavitation phenomenon caused by the pressure difference generated at this time. Secondary sterilization is possible.

The seawater passing through the UV device 60 after passing through the orifice 50 is capable of sterilizing the organisms inside the seawater by the UV rays irradiated from the UV device 60 by the DNA modulation method.

As such, the first sterilized and inactivated seawater passing through the filtration device 20, the impeller 40, the orifice 50, and the UV device 60 is sequentially formed by a pipe forming a flow path by a plurality of valves. It may be guided into the ballast tank (70).

The seawater guided into the ballast tank 70 is already in a state of being sterilized first in the inflow process, and can be completely sterilized by an electric field formed in the ballast tank 70. In addition, a pipe connected to the ballast tank 70 may be branched and connected to the plurality of ballast tanks 70 to supply seawater to the plurality of ballast tanks 70 according to a situation.

On the other hand, the electrode rod 83 is provided in the ballast tank 70, the electric field is formed by the power applied through the AC transformer 81 is stored in the ballast tank 70 The ballast water can be sterilized.

Looking at this in more detail, the AC 440V or AC 220V power supplied from the vessel is transformed to have a displacement value of 1-25V through the AC transformer 81, 1- to the electrode rod 83 through a wire AC current of 25V is applied.

At this time, in order to form an electric field in the ballast water while maintaining the inherent inherent components of the seawater by the heat generated by the application of current, a random low constant voltage between 1-25V may be applied according to the temperature conditions of the surrounding environment. A current is supplied to the electrode rod 83 while supplying or periodically converting a voltage between 1-25V.

Alternatively, a current of 1-25 V is flowed into the ballast tank 70 in which the electrode rods 83 are constructed, and the ballast tank 70 has ballast tanks 70 through the variable electrical resistor 82. The resistance value of the variable electrical resistor is adjusted according to the temperature change, so that the amount of current applied to the electrode rod 83 through the variable electrical resistor is adjusted so that the salt water intrinsic properties of the ballast water can not be changed. Will be.

In the ballast tank 70, the ballast tank 70 transmits the temperature measured by the temperature sensor 71 to the controller 90 to maintain a constant temperature, and the controller 90 measures the set temperature. As described above, control of the voltage in the AC transformer 81 or control of the amount of current through the variable electrical resistor 82 or on / off control of the current applied to the electrode can be performed to maintain the range. By such operation, the ballast tank 70 maintains a constant temperature of the ballast tank 70 so that the properties of the seawater can be maintained unchanged.

On the other hand, the sterilization work in the ballast tank 70 may be performed at any time while the ballast tank 70 is filled with ballast water, and the complete sterilization is completed during the ship's voyage and the ship arrives at its destination. In this state, it is possible to keep the ballast water discharged immediately.

In particular, since the first sterilization is made when the ballast water is introduced, and only the electric field is formed inside the ballast tank 70, the sterilization operation can be effectively performed without consuming much energy during the operation of the ship.

When the ballast water sterilization of the vessel is completed by the formation of the electric field, the preparation state for discharging the ballast water of the vessel is completed. Therefore, when the ship arrives at the destination or when the ballast water needs to be discharged, a plurality of valves provided in the pipe are switched to form a flow path that can be discharged to the water outlet.

Referring to FIG. 3, the process of discharging the sterilized ballast is performed first, and the ballast tank in which the sterilization is completed in the ballast tank 70 is moved in the reverse direction along the pipe into which the ballast water is introduced according to the driving of the pump 10. And, it may be supplied to the filtration device 20 through the pump 10.

The ballast water supplied to the filtration device 20 passes through the impeller 40, the orifice 50, and the yuv device 60, and the path where the ballast water moves is introduced into the ballast tank 70. Will be the same as That is, the supply of seawater and the discharge of ballast water are made through the same pipe according to the operation of the valve.

The ballast water discharged through the yuv device 60 is moved to the water outlet portion 4 can be discharged to the sea. If there are a plurality of water outlets 4, the pipes are branched to be discharged to the respective water outlets 4, and the sterilization state of the ballast water can be confirmed through at least one sample collection port 5.

Meanwhile, even when the ballast tank 70 is discharged from the sterilized ballast water, the ultrasonic diffuser 22, the impeller 40, the UV device 60, etc. are operated so that the final ballast water can be completely sterilized. can do. Of course, if necessary, at least one of the ultrasonic diffusion device 22, the impeller 40, and the UV device 60 may be prevented.

On the other hand, when foreign matter is stuck in the filtration filter 21 during the operation of the ballast water treatment device 1 or during operation for discharge of ballast water, the pump 10 so that the flow of ballast water can be stopped. ) And switching of the valve is made.

In such a state, the valve 35 may be switched so that the seawater may flow at a high speed, and the seawater obtained along the first flow path 31 and the second flow path 32 by a separate pump may be discharged from the water outlet. (4) is discharged at high speed. At this time, the third flow passage 33 connected to the filtration device 20 is in a vacuum or negative pressure state, by the vacuum or negative pressure such that the foreign matter stuck to the filtration filter 21 can be discharged together. . At the same time, the foreign matter on the filtration filter 21 may be more effectively removed by driving the ultrasonic diffusion device 22.

1. Ballast water treatment system 10. Pump
20. Filtration device 30. Foreign material removal device
40. Impeller 50. Orifice
60. UV device 70. Ballast tank
81. AC transformer 82. Variable electrical resistor
83. Electrode Rod 84. Switch

Claims (10)

Pumps for supplying and discharging seawater that can be used as ballast water for ships;
A ballast tank in which ballast water supplied by the pump is stored to control the balance of the ship;
A pipe connecting the inlet to and out of the inlet and outlet of the seawater and the pump and the ballast tank, which is opened and closed by a plurality of valves to guide the flow of the seawater;
A filtering device provided on one side of the pipe and filtering foreign substances and organisms of seawater supplied to the ballast tank;
An impeller provided on one side of the pipe and provided with a plurality of wings rotating at high speed to inactivate organisms contained in the seawater passing through the filtering device by a rotational force;
A plurality of electrode rods provided inside the ballast tank and forming an electric field in the ballast water;
An AC transformer connected to the electrode and applying an alternating current of 1-25V to the electrode;
A temperature sensor provided inside the ballast tank and measuring a temperature of ballast water; And
It is configured to include a control device for controlling the operation of the AC transformer in accordance with the temperature of the temperature sensor,
The control device is a ballast water treatment apparatus, characterized in that the ballast water to maintain the set temperature by adjusting the voltage supplied through the AC voltage according to the temperature sensed by the temperature sensor.
The method of claim 1,
The ballast water treatment apparatus between the AC transformer and the electrode rod is provided with a switch to turn on or off the current supply to the electrode rod in accordance with the temperature sensed by the temperature sensor.
The method of claim 1,
Ballast water treatment apparatus between the AC transformer and the electrode rod is provided with a variable electrical resistor for adjusting the amount of current supplied to the electrode rod in accordance with the temperature sensed by the temperature sensor.
The method of claim 1,
The ballast water treatment device, characterized in that the filtration filter for filtering the organism of 50㎛ or more inside the filtration device.
The method of claim 4, wherein
The ballast water treatment, characterized in that the ultrasonic diffusion device for preventing the sterilization of microorganisms and the attachment of microorganisms by diffusing the ultrasonic waves generated by the ultrasonic generator in the filtration device inside the filtration device. Device.
The method of claim 1,
The ballast water treatment device is formed of a zinc material in the interior of the filtration device, characterized in that the corrosion prevention member for sterilizing microorganisms in the filtration device and preventing corrosion therein is provided.
The method of claim 1,
The ballast water treatment apparatus of one side of the pipe is provided with an orifice to adjust the flow rate of the sea water passing through the impeller so that the cavitation phenomenon occurs by the pressure difference.
The method of claim 1.
One side of the pipe is a ballast water treatment device, characterized in that the UV device for sterilizing the organism by irradiating the UV rays to the seawater flowing through the impeller.
The method of claim 1,
The pipe is further provided with a debris removal device for removing debris of the filtration device,
The foreign material removal device,
An auxiliary pump for high speed inflow and outflow of seawater;
A first flow path connected to the auxiliary pump to which seawater flows;
A second flow passage for discharging seawater introduced in communication with the water outlet portion;
A third flow passage connected with the filtration device;
A valve provided in the third passage to open and close the third passage;
Connecting the first flow passage, the second flow passage and the third flow passage, respectively, and foreign matters of the filtration apparatus through the third flow passage by a vacuum pressure or a negative pressure generated during high-speed movement of seawater through the first flow passage and the second flow passage. Ballast water treatment apparatus comprising a ejector to be discharged.
The method of claim 1,
The pipe is provided with a plurality of valves,
Ballast water treatment device characterized in that the ballast tank provided in the ballast tank is discharged to the water outlet through the filtration device and the impeller along the same pipe as the water received by the switching of the valve.

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