JP5537582B2 - Ballast water purification device, ship and ballast water purification method - Google Patents

Description

  Embodiments of the present invention generally relate to a ballast water purification device for purifying ballast water stored in a ship.

  Generally, in ships such as oil tankers and cargo carriers, oil and other cargo is transported to the importing country, and after unloading the cargo at the port, seawater of the same weight is stored in tanks on the ship. Is done. The reason why the seawater is stored in the ship is to prevent the balance from being lost on the voyage because the ship becomes lighter after the cargo is unloaded. That is, the ship cannot sail without a certain weight.

  Seawater (or fresh water may be sufficient) for balancing such a ship is called ballast water. Such a freight importing country is a ballast water exporter.

  On the other hand, a vessel storing ballast water sails from an importing country to an exporting country of cargo and discharges the ballast water into the sea near the exporting country. Therefore, the countries that export cargo are so-called importers of ballast water.

  By the way, the ballast water may contain specific malignant microorganisms and bacteria that live in the sea near the exporting country of ballast water. For example, it is known that a microorganism called red tide plankton lives in the sea near Japan. For this reason, when ballast water is transported from Japan as an exporting country to other countries, it is expected that a large amount of red tide plankton will occur in the seas near other countries. In addition, there are problems of international movement of aquatic organisms via ballast water, such as abnormal occurrence of malignant bacteria such as Vibrio cholerae in other countries.

  Therefore, an international convention for the regulation and management of ship ballast water and sediment (hereinafter abbreviated as “ballast convention”) was adopted by the 74 participating countries in the United Kingdom (London) on February 13, 2004. In this treaty, so-called biological standards for ballast water drainage are set as discharge standards when ballast water is discharged into the sea near the importing country of ballast water. If this criterion is not met, the importing country of ballast water can refuse to accept ballast water drainage, ie ballast.

Specifically, the biological standard of ballast water drainage is “10 / m ³ ” or less for microorganisms such as animal and plant plankton. In addition, in the case of Vibrio cholerae, “1/100 ml” or less, in the case of Escherichia coli, “250/100 ml” or less, and in the case of enterococci, “100/100 ml” or less. is there.

  Regarding the handling of ballast water as described above, there has been proposed a ballast water purification technology that purifies the ballast water before storing it in the ship and loads the purified ballast water into the ship (see, for example, Patent Document 1). By using such ballast water purification technology, for example, when a cargo ship sails to an importing country of ballast water and arrives at the importing country, then the stored ballast water is discharged into the port. Already purified ballast water can be discharged.

  Further, as a conventional ballast water purification method, a ballast water purification technique has been proposed in which a ballast water purification device mainly composed of heat treatment is arranged in a ship to circulate and purify the ship's ballast water (for example, Patent Document 2). reference). Furthermore, as a ballast water purification device in a ship, a ballast water purification device including a bactericide mixing device capable of mixing a bactericide into ballast water and a device capable of blowing air into ballast water in drainage has been proposed ( For example, see Patent Document 3).

Japanese Patent Laid-Open No. 2004-25040 Japanese Patent Laid-Open No. 2004-284481 JP-A-4-322788

  The method using the above-described ballast water purification technology has the following problems.

  First, even when ballast water after purification is loaded into the ship, residual microorganisms that could not be sterilized may grow during the voyage. In this case, ballast water cannot be discharged into the port of the importing country.

  In general, even if ballast water is purified by a purification device such as a filtration device or a sterilization device, a large amount of microorganisms or bacteria are contained in the ballast water, or resistance to the purification device is present in them. There is a high possibility that microorganisms and bacteria will remain in the ballast water loaded into the ship due to the existence of such things.

  Secondly, during the voyage, microorganisms and bacteria may be mixed from the air into the ballast water stored in the storage tank in the ship. In particular, in the sea near the exporting country of ballast water, since microorganisms in the sea are splashed and suspended in the gas phase, they may be mixed into the storage tank in the ship.

  Therefore, after loading the purified ballast water in the ship, the microorganisms and bacteria mixed in from the air grow during the voyage, and as a result, the ballast water cannot be discharged into the port of the importing country.

  Therefore, an object of the present invention is to provide a ballast water purification device that can realize purification of ballast water so that microorganisms and bacteria contained in the ballast water can satisfy the reference value when discharging the ballast water stored in the ship. It is to provide.

According to this embodiment, the ballast water purification device is a ballast water purification device applied to a ship having a storage tank for storing ballast water, and stores the ballast water filtered by the filtering means provided outside the ship. a first feed means for supplying to the tank, when the discharge of the pre-Symbol ballast water, and sterilizing means for sterilizing the ballast water stored in the reservoir tank, the ballast water stored in the reservoir tank to said sterilizing means A second water supply means to supply; a determination means for determining when the ballast water is supplied to the ship and when the ballast water is discharged from the ship; and the supply of the ballast water based on the determination result of the determination means A first control means for operating the filtration means at times and controlling the sterilization means for operation when draining the ballast water, and is stored in the storage tank Detection means for detecting a microorganism or bacterial included in the last water, based on a detection result of said detecting means, a configuration in which a second control means for controlling the sterilization process of the sterilizing unit.

The figure for demonstrating the structure of the ballast water purification apparatus regarding 1st Embodiment. The figure for demonstrating the structure of the ballast water purification apparatus regarding 2nd Embodiment. The figure for demonstrating the structure of the ballast water purification apparatus regarding 3rd Embodiment. The figure for demonstrating the structure of the ballast water purification apparatus regarding 4th Embodiment. The figure for demonstrating the structure of the ballast water purification apparatus regarding 5th Embodiment. The figure for demonstrating the structure of the ballast water purification apparatus regarding 6th Embodiment. The figure for demonstrating the structure of the ballast water purification apparatus regarding 7th Embodiment. The figure for demonstrating the structure of the ballast water purification apparatus regarding 8th Embodiment. The figure for demonstrating the structure of the sterilization processing apparatus regarding 8th Embodiment. The figure for demonstrating the structure of the ballast water purification apparatus regarding 9th Embodiment. The figure for demonstrating the structure of the ballast water purification apparatus regarding 10th Embodiment. The figure for demonstrating the structure of the ballast water purification apparatus regarding 11th Embodiment. The figure for demonstrating the structure of the ballast water purification apparatus regarding 12th Embodiment. The figure for demonstrating the structure of the ballast water purification apparatus regarding 13th Embodiment. The top view for demonstrating the structure of the ballast water purification apparatus regarding 14th Embodiment. The figure for demonstrating the structure of the ballast water purification apparatus regarding 15th Embodiment. The figure for demonstrating the structure of the ballast water purification apparatus regarding 16th Embodiment. The figure for demonstrating the structure of the ballast water purification apparatus regarding 17th Embodiment. The figure for demonstrating the structure of the ballast water purification apparatus regarding 18th Embodiment. The figure for demonstrating the structure of the ballast water purification apparatus regarding 19th Embodiment.

  Embodiments will be described below with reference to the drawings.

(First embodiment)
Drawing 1 is a figure for explaining the composition of the ballast water purification device about this embodiment.

  The ballast water purification apparatus according to the present embodiment is roughly classified into, for example, a ground facility 2 at a port outside the ship and a facility mounted on the ship 3.

  The ground facility 2 includes, for example, a pump 20 that pumps up ballast water 1 (hereinafter may be referred to as “ballast raw water”) that is seawater in a harbor (ballast water exporting country), a filtration device 21, and water pipes 22 to 24. Have The filtration device 21 is, for example, a membrane filtration device that removes suspended substances from the raw ballast water 1.

  On the other hand, for example, in a ship 3 such as a cargo carrier ship, a storage tank 30 for storing ballast water, a sterilization treatment device 31, a pump 32 and a water pipe 33 for supplying ballast water from the storage tank 30 to the sterilization device 31; And the water piping 34 for discharging | emitting the ballast water sterilized by the sterilization processing apparatus 31 in the harbor (importing country of ballast water) is provided. The ship 3 is provided with a cargo storage unit 35 for storing cargo. The sterilization treatment device 31 is, for example, an ultraviolet sterilization device for sterilizing microorganisms and bacteria contained in the ballast water.

  Hereinafter, the effect of the ballast water purification apparatus of this embodiment is demonstrated.

  First, when the ship 3 is anchored in the port of the exporting country of ballast water before voyage, the outlet of the filtration device 21 and the storage tank 30 are connected via the water pipe 23 of the ground facility 2. . Here, the waste water from the outlet for drainage of the filter device 21 is returned to the port where the ballast raw water 1 exists through the water pipe 24.

  In the ground facility 2, the ballast raw water 1 is pumped from the port via the water pipe 22 by the drive of the pump 20, and is sent to the inlet of the filtration device 21. In the filtering device 21, suspended solids of a certain size or larger existing in the raw ballast water 1 are captured on the surface of the membrane (for example, a pore size of 10 μm), and the ballast water containing suspended solids or soluble liquid of a size smaller than that is captured. Only passes through the membrane and is supplied into the storage tank 30 via the water pipe 23. On the other hand, in the filtering device 21, the liquid (waste water) containing suspended solids captured on the membrane surface is returned to the port where the original ballast raw water 1 exists through the water pipe 24.

  Next, the ship 3 starts a voyage from the port of the exporting country of ballast water toward the importing country. After this voyage, the ballast water stored in the storage tank 30 is supplied to the sterilization apparatus 31 via the water pipe 33 by driving the pump 21 in the ship 3 in the port or near sea of the importing country. The

  The sterilization apparatus 31 sterilizes microorganisms and bacteria remaining in the ballast water by, for example, ultraviolet sterilization ability until, for example, a predetermined reference value (the above-described biological standard for ballast water drainage) is satisfied, and sends it to the water pipe 34. . The ballast water stored in the storage tank 30 is discharged through the water pipe 34 into the seawater 4 in the port of the importing country or in the nearby sea after sterilization.

  Here, a case has been described in which the sterilization apparatus 31 is activated and the sterilization process of the ballast water stored in the storage tank 30 is executed after the ship 3 has arrived at the port of the importing country of the ballast water or near the sea. The sterilization process may be executed during the voyage. That is, the sterilization apparatus 31 may be activated during the voyage before arrival at the port of the importing country or near the sea. In this case, a part of the sterilized ballast water is discharged to a high sea other than the harbor or the nearby sea.

  Usually, in sterilization after voyage, it is necessary to complete the sterilization within a berthing time of about 1 day, but during voyage, for example, sterilization may be performed over a voyage period of 1 to 2 weeks. it can. For this reason, the sterilization processing device 31 mounted on the ship 3 may have a relatively small sterilization capability, and there is an effect that the installation area, power, etc. of the sterilization processing device 31 on the ship 3 can be reduced.

  As described above, by using the ballast water purification device of the present embodiment, the ballast water filtered by the filtration device 21 is loaded into the ship before the ship sails, and further, the ballast water is sterilized during the sailing or after the sailing. Discharge after processing. Therefore, the microorganisms and bacteria remaining in the ballast water loaded in the ship without being filtered, and the microorganisms and bacteria mixed in from the air during the voyage should be set to the prescribed standard value (biological standard for ballast water drainage). Ballast water after being sterilized until it is filled can be discharged. That is, purification at the time of discharge of ballast water can be realized so as to satisfy the biological standard of ballast water drainage.

  In addition, although the filtration apparatus 21 of this embodiment assumes the membrane filtration apparatus for removing a suspended solid, it is not restricted to this and another apparatus may be sufficient. Specifically, a sand filtration device, a coagulation sedimentation processing device, a screen processing device, and the like.

  The sand filtration device can process a larger flow rate than the membrane filtration device. The coagulation sedimentation processing apparatus injects a coagulant such as PAC or iron sulfate to make the suspended substance a large lump substance, and then removes the lump substance by sand filtration. The feature of the coagulation sedimentation treatment apparatus is that the colloidal substance having a smaller particle diameter can be removed than the membrane filtration apparatus and the sand filtration apparatus, and there is an effect that the efficiency of the subsequent sterilization treatment can be improved. Moreover, a screen processing apparatus removes a suspended | floating matter with the screen with a mesh of about 1-20 mm, and even larger flow rate processing is attained than a sand filtration apparatus.

  Moreover, although the sterilization apparatus 31 of this embodiment assumes the ultraviolet type sterilization apparatus, it may be another apparatus without being restricted to this. Specifically, a chemical injection processing device, an electrical processing device, an ozone processing device, an OH radical processing device, and the like.

  The chemical injection processing equipment performs sterilization by injecting sodium hypochlorite solution, chlorine solution, solid chlorine, chlorine dioxide and other chlorine agents, or hydrogen peroxide, which are chemicals capable of sterilizing microorganisms and bacteria. It is. The electric processing apparatus performs sterilization by applying a bipolar voltage in water, and includes plasma discharge and high voltage processing.

  The ozone treatment apparatus injects ozone gas into water and sterilizes it by the oxidizing power of ozone. The ozone treatment apparatus can remove not only sterilization treatment but also odorous substances and colored substances from ballast water. OH radical treatment equipment generates OH radicals, which are powerful oxidants, by combined treatment with photocatalysts such as titanium dioxide and ultraviolet light, ozone and ultraviolet light, ozone and hydrogen peroxide, or a combination of ozone, ultraviolet light and hydrogen peroxide. Sterilization treatment. The OH radical treatment apparatus can remove not only sterilization treatment but also organic pollutants.

(Second Embodiment)
FIG. 2 is a diagram illustrating the configuration of the ballast water purification apparatus according to the second embodiment.

  The apparatus of this embodiment is the structure provided with the sterilization processing apparatus 25 (pretreatment sterilization processing apparatus) arrange | positioned in the water piping 23 connected to the exit of the filtration apparatus 21 in the ground equipment 2. FIG. In addition, about the component similar to the ballast water purification apparatus shown in FIG. 1 regarding 1st Embodiment, the same code | symbol is attached | subjected and description is abbreviate | omitted.

  Hereinafter, the effect of the ballast water purification apparatus of this embodiment is demonstrated.

  First, when the ship 3 is anchored in the port of the exporting country of ballast water before voyage, the outlet of the filtration device 21 and the storage tank 30 are connected via the water pipe 23 of the ground facility 2. . In the ground facility 2, the ballast raw water 1 is pumped from the port via the water pipe 22 by the drive of the pump 20, and is sent to the inlet of the filtration device 21.

  Here, the ballast water from which suspended substances have been removed by the filtration device 21 is sterilized by passing through the sterilization device 25 when supplied into the storage tank 30 via the water pipe 23. Therefore, the ballast water in which microorganisms and bacteria are sterilized is supplied into the storage tank 30 before the voyage. The microorganisms and bacteria remaining or mixed in the ballast water stored in the storage tank 30 are sterilized by the sterilization apparatus 31 on the ship 3 during or after voyage, as in the first embodiment. .

  As described above, the ballast water loaded in the ship is discharged after being sterilized until it satisfies a predetermined reference value (biological standard for ballast water drainage). That is, purification at the time of discharge of ballast water can be realized so as to satisfy the biological standard of ballast water drainage.

  Moreover, according to this embodiment, the operation | movement load of the sterilization processing apparatus 31 which performs the sterilization process during the voyage or after the voyage can be relatively reduced by previously sterilizing the microorganisms and bacteria in the ballast water before the voyage.

(Third embodiment)
Drawing 3 is a figure showing the composition of the ballast water purification device about a 3rd embodiment.

  The apparatus of the present embodiment is configured to include a pretreatment sterilization apparatus that injects chemicals as a sterilizing substance into a water pipe 23 connected to the outlet of the filtration apparatus 21 in the ground facility 2. In addition, about the component similar to the ballast water purification apparatus shown in FIG. 1 regarding 1st Embodiment, the same code | symbol is attached | subjected and description is abbreviate | omitted.

  The pretreatment sterilization apparatus includes a tank 26 that stores a sodium hypochlorite solution that is a chemical as a sterilizing substance, a pipe 27, and a pump 28.

  Hereinafter, the effect of the ballast water purification apparatus of this embodiment is demonstrated.

  First, when the ship 3 is anchored in the port of the exporting country of ballast water before voyage, the outlet of the filtration device 21 and the storage tank 30 are connected via the water pipe 23 of the ground facility 2. . In the ground facility 2, the ballast raw water 1 is pumped from the port via the water pipe 22 by the drive of the pump 20, and is sent to the inlet of the filtration device 21.

  Here, by driving the pump 28, the sodium hypochlorite solution in the tank 26 is supplied to the water pipe 23 via the pipe 27. Therefore, the ballast water from which suspended substances have been removed by the filtration device 21 is sent into the storage tank 30 via the water pipe 23 while being mixed and contacted with the sodium hypochlorite solution.

  As described above, the ballast water loaded in the ship 3 is sterilized with chemicals after the filtration process before the voyage. In this case, since chemicals such as sodium hypochlorite solution have high persistence in water, after being supplied into the storage tank 30, the sterilizing ability due to the persistence is continued during voyage. . Therefore, it also has a sterilizing effect on microorganisms and bacteria remaining in or mixed in the storage tank 30 and can maintain a purified state of ballast water during voyage.

  After the voyage, the ballast water loaded in the ship is discharged after being sterilized by the sterilization apparatus 31 mounted on the ship 3. Therefore, it is possible not only to meet the biological standards for ballast water drainage but also to achieve a high level of purification during discharge.

(Fourth embodiment)
FIG. 4 is a diagram illustrating the configuration of the ballast water purification apparatus according to the fourth embodiment.

  The ballast water purification apparatus according to the present embodiment is configured from facilities mounted on the ship 3. That is, as a facility of the ship 3, for example, a pump 42 that pumps up the ballast raw water 1 that is seawater in a harbor, a filtering device 41, and water pipes 43 to 45 are provided. The filtration device 41 is a membrane filtration device that removes suspended substances from the ballast raw water 1, for example.

  The other facilities related to the sterilization apparatus 31 are the same as those of the ballast water purification apparatus shown in FIG. 1 relating to the first embodiment, and the same reference numerals are given and description thereof is omitted.

  Hereinafter, the effect of the ballast water purification apparatus of this embodiment is demonstrated.

  First, the ship 3 pumps up the ballast raw water 1 by driving the pump 42 and sends it to the filtration device 41 through the water pipe 43 when the ship 3 is anchored in the port of the exporting country of ballast water before voyage.

  The filtering device 41 filters floating substances of a certain size or more existing in the ballast raw water 1 and supplies the suspended substances to the storage tank 30 via the water pipe 45. On the other hand, in the filtration device 41, the liquid (drainage) containing suspended solids captured on the membrane surface is returned to the port where the original raw ballast water 1 exists through the water pipe 44.

  According to this embodiment, since the equipment related to the filtering device 41 is mounted on the ship 3, it is not necessary to connect the ship 3 to the ground equipment 2 in the port. For this reason, the ship 3 can be anchored at an arbitrary position in the harbor and loaded with the ballast raw water 1. Moreover, even in the case of a port where the above-described ground facility 2 is not installed, the ship 3 can load the raw ballast water 1 from the port after performing the purification process by the filtering device 41.

(Fifth embodiment)
FIG. 5 is a diagram illustrating a configuration of a ballast water purification apparatus according to the fifth embodiment.

  The ballast water purification apparatus according to the present embodiment includes a purification apparatus loading ship 5 (hereinafter referred to as a filtration processing ship) equipped with equipment corresponding to the ground equipment 2.

  The filtration processing vessel 5 includes a pump 52 that pumps up the ballast raw water 1 that is seawater in a port, a filtration device 51, and water pipes 53 and 54, for example. The filtration device 51 is, for example, a membrane filtration device that removes suspended substances from the ballast raw water 1.

  The other facilities related to the sterilization apparatus 31 are the same as those of the ballast water purification apparatus shown in FIG. 1 relating to the first embodiment, and the same reference numerals are given and description thereof is omitted.

  Hereinafter, the effect of the ballast water purification apparatus of this embodiment is demonstrated.

  First, when the ship 3 is anchored in the port of the exporting country of ballast water before the voyage, the ship 3 approaches the filtration processing ship 5 and exits from the filtration device 51 through the water pipe 54 of the dedicated ship 5. And the storage tank 30 is connected.

  In the filtration processing ship 5, the ballast raw water 1 is pumped from the port through the water pipe 53 and sent to the inlet of the filtration device 51 by driving the pump 52. The filtration device 51 sends the ballast water after removing floating substances of a certain size or more existing in the ballast raw water 1 into the storage tank 30 through the water pipe 54.

  According to this embodiment, the above-mentioned ground equipment 2 becomes unnecessary from a port by using the filtration processing exclusive ship 5 provided with the equipment relevant to the filtration apparatus 51. FIG. In addition, since it is not necessary to install equipment related to the filtering device 51 on the ship 3, the installation space can be saved correspondingly. Furthermore, unlike the above-mentioned ground equipment 2, the filtration processing ship 5 can move, so the ship 3 can load the ballast raw water 1 at an arbitrary position in the port.

(Sixth embodiment)
FIG. 6 is a diagram illustrating a configuration of a ballast water purification apparatus according to the sixth embodiment.

  The ballast water purification apparatus of the present embodiment is configured to include a purification apparatus loading ship 6 (hereinafter referred to as a sterilization treatment ship) equipped with facilities related to the sterilization treatment apparatus 61 mounted on the ship 3.

  The sterilization treatment exclusive ship 6 is for discharging the ballast water sterilized by the sterilization treatment device 61, the pump 62 for supplying the ballast water from the storage tank 30 to the sterilization device 61, and the water pipe 63. A water pipe 64 is mounted. The sterilization treatment device 61 is, for example, an ultraviolet sterilization device for sterilizing microorganisms and bacteria contained in the ballast water.

  In addition, about the ground equipment 2 related to the filtration apparatus 21 other than this, it is the same as that of the ballast water purification apparatus of 1st Embodiment shown in FIG. 1, The same code | symbol is attached | subjected and description is abbreviate | omitted.

  Hereinafter, the effect of the ballast water purification apparatus of this embodiment is demonstrated.

  First, the ship 3 stores ballast water obtained by filtering suspended matters or the like in the storage tank 30 by the ground facility 2 installed in the port of the exporting country of ballast water before sailing. After the voyage, the ship 3 approaches the sterilization processing exclusive ship 6 in the port of the importing country, for example. The ship 3 is connected to the storage tank 30 and the sterilization apparatus 61 via the water pipe 63 of the dedicated ship 6.

  The sterilization processing ship 6 drives the pump 62 to pump up the ballast water stored in the storage tank 30 and supplies it to the sterilization processing device 61 through the water pipe 63. The sterilization treatment device 61 sterilizes microorganisms and bacteria remaining in the ballast water by, for example, ultraviolet sterilization capability, and discharges it into the seawater 4 through the water pipe 64.

  According to the present embodiment, by using the sterilization processing dedicated ship 6 provided with the equipment related to the sterilization processing device 61, it is not necessary to mount the equipment related to the device 61 on the ship 3. Therefore, since the ship 3 does not need to be equipped with equipment related to the ballast water purification device, the installation space can be saved correspondingly.

(Seventh embodiment)
FIG. 7 is a diagram illustrating a configuration of a ballast water purification apparatus according to the seventh embodiment.

  The ballast water purification apparatus according to the present embodiment includes a sterilization apparatus 31, a pump 32 for supplying ballast water from the storage tank 30 to the sterilization apparatus 31, in facilities related to the sterilization apparatus 61 mounted on the ship 3. The water piping 33 and the water piping 36 for returning the ballast water sterilized by the sterilization treatment device 31 to the storage tank 30 are provided. Furthermore, the ship 3 is equipped with a pump 37 and a water pipe 34 for pumping and discharging ballast water from the storage tank 30 as the equipment.

  In addition, about the ground equipment 2 related to the filtration apparatus 21 other than this, it is the same as that of the ballast water purification apparatus of 1st Embodiment shown in FIG. 1, The same code | symbol is attached | subjected and description is abbreviate | omitted.

  Hereinafter, the effect of the ballast water purification apparatus of this embodiment is demonstrated.

  First, the ship 3 stores in the storage tank 30 the ballast water obtained by filtering suspended matters and the like by the ground facility 2 installed in the port of the exporting country of the ballast water before voyage.

  The ship 3 starts the voyage, activates the pump 32, pumps ballast water from the storage tank 30 through the water pipe 33, and supplies the ballast water by the sterilization apparatus 31. The sterilization apparatus 31 sterilizes the pumped ballast water and then returns it to the storage tank 30 via the water pipe 36.

  In short, the ship 3 circulates the ballast water between the storage tank 30 and the sterilization apparatus 31 during the voyage. By this circulation, the ballast water stored in the storage tank 30 is sterilized with microorganisms and bacteria remaining before the voyage and microorganisms and bacteria mixed during the voyage.

  Next, after completion of the voyage, the ship 3 pumps up the ballast water stored in the storage tank 30 by driving the pump 37 in the port of the importing country, for example, into the seawater 4 through the water pipe 34. Discharge.

  According to this embodiment, the sterilization process of the ballast water stored in the storage tank 30 can be performed over a period of, for example, 1 to 2 weeks during the voyage of the ship 3. Therefore, microorganisms and bacteria contained in the ballast water can be sufficiently sterilized until the voyage is completed. Further, since the sterilization process can be completed over a sufficient period of time, the sterilization apparatus 31 mounted on the ship 3 may have a relatively small sterilization capability, and the sterilization apparatus 31 is installed on the ship 3. There is also an effect that the area and power can be reduced.

(Eighth embodiment)
FIG.8 and FIG.9 is a figure which shows the structure of the ballast water purification apparatus regarding 8th Embodiment.

  The ballast water purification apparatus according to the present embodiment has a structure in which the sterilization treatment device 38 is suspended in the ballast water of the storage tank 30 in the facility related to the sterilization treatment device 38 mounted on the ship 3. Furthermore, the ship 3 is equipped with a pump 37 and a water pipe 34 for pumping and discharging ballast water from the storage tank 30 as the equipment.

  In addition, about the ground equipment 2 relevant to the filtration apparatus 21 other than this, it is the same as that of the ballast water purification apparatus shown in FIG. 1 regarding 1st Embodiment, attaches | subjects the same code | symbol and abbreviate | omits description.

  As shown in FIG. 9, the sterilization apparatus 38 of this embodiment has a structure in which a plurality of ultraviolet lamps 381 a to 381 c are provided on a lamp support 380. The lamp support 380 is made of a material having a small specific gravity and has a structure that can float in the ballast water.

  First, the ship 3 stores in the storage tank 30 the ballast water obtained by filtering suspended matters and the like by the ground facility 2 installed in the port of the exporting country of the ballast water before voyage.

  The ship 3 floats the sterilization processing device 38 in the storage tank 30 after starting the voyage. The sterilization treatment device 38 performs sterilization treatment of ballast water by causing the ultraviolet lamps 381a to 381c to emit light.

  In short, during the voyage, the ship 3 is sterilized with microorganisms and bacteria remaining in the ballast water stored in the storage tank 30 by the sterilization treatment device 38 and microorganisms and bacteria mixed during the voyage. .

  Next, after completion of the voyage, the ship 3 pumps up the ballast water stored in the storage tank 30 by driving the pump 37 in the port of the importing country, for example, into the seawater 4 through the water pipe 34. Discharge.

  According to this embodiment, the sterilization process of the ballast water stored in the storage tank 30 can be performed over a period of, for example, 1 to 2 weeks during the voyage of the ship 3. Therefore, microorganisms and bacteria contained in the ballast water can be sufficiently sterilized until the voyage is completed.

  Furthermore, if it is this embodiment, facilities, such as a pump which circulates ballast water for a sterilization process, are unnecessary. In addition, since the sterilization apparatus 38 is disposed in the storage tank 30, it is possible to save an occupied space as compared with the sterilization apparatus 31 that is relatively installed on the ship 3.

  Note that the sterilization apparatus 38 is not an apparatus that uses the ultraviolet lamps 381a to 381c, but may be an electric processing apparatus, an ozone processing apparatus, or an OH radical generator such as a photocatalyst. In the case of an electric processing apparatus, a support body on which an electrode is fixed is disposed in the storage tank 30. Further, in the case of an ozone treatment apparatus, a support body on which an ozone injection pipe is fixed is disposed in the storage tank 30. In the case of an OH radical generator, a support on which the apparatus main body is fixed is disposed in the storage tank 30.

(Ninth embodiment)
FIG. 10 is a diagram illustrating a configuration of a ballast water purification apparatus according to the ninth embodiment.

  The apparatus of the present embodiment is configured to include a wastewater treatment device 29 connected to a water pipe 24 connected to a drainage-side outlet of the filtration device 21 in the ground facility 2. The wastewater treatment device 29 is, for example, a sludge drying device that concentrates and reduces the amount of suspended solids in wastewater including suspended solids discharged through the water pipe 24.

  In addition, about the component similar to the ballast water purification apparatus of 1st Embodiment shown in FIG. 1, the same code | symbol is attached | subjected and description is abbreviate | omitted.

  Hereinafter, the effect of the ballast water purification apparatus of this embodiment is demonstrated.

  First, when the ship 3 is anchored in the port of the exporting country of ballast water before voyage, the outlet of the filtration device 21 and the storage tank 30 are connected via the water pipe 23 of the ground facility 2. . In the ground facility 2, the ballast raw water 1 is pumped from the port via the water pipe 22 by the drive of the pump 20, and is sent to the inlet of the filtration device 21.

  Ballast water from which suspended substances have been removed by the filtration device 21 is supplied into the storage tank 30 of the ship 3 via the water pipe 23. Here, in the filtration device 21, the wastewater containing suspended solids captured on the membrane surface is sent from the wastewater outlet to the wastewater treatment device 29 via the water pipe 24.

  The wastewater treatment device 29 performs wastewater treatment such as sludge drying treatment, concentrates and disposes of suspended solids in the wastewater, and returns it to the port where the original ballast raw water 1 exists. The microorganisms and bacteria remaining or mixed in the ballast water stored in the storage tank 30 are sterilized by the sterilization apparatus 31 on the ship 3 during or after voyage, as in the first embodiment. .

  According to this embodiment, the wastewater discharged when the ballast water is purified by the filtration device 21 before voyage is returned to the seawater in the harbor after being treated by the wastewater treatment device 29. Therefore, even when the concentration of suspended solids in the wastewater is high, contamination of the seawater environment in the port can be suppressed.

(Tenth embodiment)
FIG. 11 is a diagram illustrating a configuration of a ballast water purification apparatus according to the tenth embodiment.

  The apparatus of the present embodiment has a configuration in which a purification apparatus is mounted on the ship 3 and a control device 110 (hereinafter referred to as a controller) that controls the purification apparatus is mounted. The controller 110 is composed of computer hardware and software.

  As equipment of the ship 3, a weight scale 39 disposed in the cargo storage unit 35 is provided. The output unit of the weigh scale 39 is connected to the input unit of the controller 110 when the ballast water is stacked-ballast water drainage determination unit (hereinafter referred to as drainage determination unit) 111. The output unit of the drainage judgment unit 111 includes a ballast water accumulation filtration device operation control unit (hereinafter referred to as a filtration device operation control unit) 112 and a ballast water drainage UV sterilization operation control unit (hereinafter referred to as a sterilization operation control unit). ) 113 is connected to each input unit. Here, UV means ultraviolet rays.

  The filtration device operation control unit 112 controls the filtration device 41 and the pump 42. The sterilization operation control unit 113 controls the sterilization processing device 31 and the pump 32.

  In addition, about the component similar to the ballast water purification apparatus of 4th Embodiment shown in FIG. 4, the same code | symbol is attached | subjected and description is abbreviate | omitted.

  Hereinafter, the effect of the ballast water purification apparatus of this embodiment is demonstrated.

  The drainage determination unit 111 of the controller 110 monitors the measurement value from the weight scale 39, and when the measurement value is equal to or less than the set value (L), the cargo storage unit 35 becomes empty and the ballast water is accumulated. Judgment (when loading). On the other hand, when the measured value is equal to or greater than the set value (H), the drainage determination unit 111 determines that the cargo storage unit 35 is full and the ballast water drains. Here, when the measured value is between the set value (L) and the set value (H), the determination unit 111 at the time of drainage determines that the vehicle is sailing.

  When receiving the determination result that the ballast water is accumulated from the drainage determination unit 111, the filtration device operation control unit 112 controls the filtration device 41 and the pump 42 to accumulate the ballast water. That is, the ship 3 pumps up the ballast raw water 1 by driving the pump 42 and sends it to the filtering device 41 through the water pipe 43 before voyage. The filtering device 41 filters floating substances of a certain size or more existing in the ballast raw water 1 and supplies the suspended substances to the storage tank 30 via the water pipe 45.

  On the other hand, when the determination result that the ballast water is drained is received from the drainage determination unit 111, the sterilization operation control unit 113 controls the sterilization apparatus 31 and the pump 32, and the ballast after the sterilization process is stored from the storage tank 30. Drain the water. In addition, when the determination part 111 at the time of draining determines that it is during a voyage, neither the filtration apparatus operation control part 112 nor the sterilization operation control part 113 performs control operation.

  According to the present embodiment, the operation of loading ballast water into the storage tank 30 and the operation of draining ballast water from the storage tank 30 are automatically performed based on the cargo loading state in the cargo storage section 35 of the ship 3. be able to.

  In addition, although this embodiment is a structure which controls the automatic driving | operation of ballast water based on the measured value from the weight scale 39 in the cargo storage part 35, the structure which does not use the weight scale 39 is also possible.

  Specifically, based on the entry signal of the ship 3 such as a cargo transport ship, the drainage determination unit 111 performs the determination. This entry signal is a detection signal that detects that a ship has entered the territorial waters of each country. For example, an entry communication signal such as wireless communication, an infrared detection signal when the ship body arrives, a ship number, etc. This corresponds to a detection signal or the like.

  Moreover, the structure which the judgment part 111 at the time of drainage performs a determination based on the navigation direction detection signal of ships 3, such as a cargo transport ship, may be sufficient. The navigation direction detection signal is a measurement signal based on the navigation direction value in the ship, whether the navigation flow velocity is positive or negative, etc., for example, when the ballast water is stacked and discharged.

  Further, a water level gauge may be provided in the storage tank 30 to perform feedback control of the pump 42. This is because when the pump flow rate is small, the ballast water accumulation time becomes long and the ship's stop time becomes long, and by appropriately controlling it, the same time can be shortened and the stop time can also be shortened.

(Eleventh embodiment)
FIG. 12 is a diagram illustrating the configuration of the ballast water purification apparatus according to the eleventh embodiment.

  The apparatus of the present embodiment has a configuration in which a purification apparatus is mounted on the ship 3 and a control device 110 (hereinafter referred to as a controller) that controls the purification apparatus is mounted. The controller 110 is composed of computer hardware and software.

  As equipment of the ship 3, a biometer 121 arranged in the storage tank 30 is provided. The biometer 121 outputs the measured value to the input unit of the controller 120 for draining the ballast water UV sterilization operation (hereinafter referred to as a sterilization operation control unit, UV means ultraviolet light) 120. The biometer 121 is, for example, an E. coli sensor using a gene or immune reaction.

  The sterilization operation control unit 120 controls the sterilization apparatus 31 and the pump 32 based on the measurement values from the biometer 121.

  In addition, about the component similar to the ballast water purification apparatus of 4th Embodiment shown in FIG. 4, the same code | symbol is attached | subjected and description is abbreviate | omitted.

  Hereinafter, the effect of the ballast water purification apparatus of this embodiment is demonstrated.

  In this embodiment, when a measured value higher than the set value is output from the biometer 121 during ballast water drainage after the voyage of the ship 3, the sterilization operation control unit 120 activates the sterilization treatment device 31 and the pump 32. At times, control is performed to increase the sterilizing ability of the sterilizing apparatus 31. In addition, the sterilization operation control unit 120 executes control for reducing the flow rate of the pump 131.

  That is, when a measurement value higher than the set value is output from the biometer 121, the sterilization operation control unit 120 determines that E. coli in the storage tank 30 has increased, and Execute control to increase sterilization ability. Specifically, the sterilization apparatus 31 increases the light emission intensity of the ultraviolet lamp of the sterilization apparatus 31 by increasing the applied voltage. Alternatively, the number of ultraviolet lamps to be activated among the plurality of ultraviolet lamps incorporated in the sterilization apparatus 31 is increased.

  On the other hand, when the measurement value lower than the set value is output from the biometer 121, the sterilization operation control unit 120 determines that the E. coli in the storage tank 30 is less than the reference value, and conversely to the above. Control for reducing the sterilizing ability of the sterilizing apparatus 31 is executed. In addition, control for steady or increasing the flow rate of the pump 131 is executed.

  The sterilization operation control unit 120 executes the above control operation based on ON-OFF control, PI control (proportional integral control), or PID control (proportional integral differential control) method.

  According to the present embodiment, when the ballast water is drained, the biometric meter 121 monitors the state of Escherichia coli contained in the ballast water stored in the storage tank 30, and exhibits a sterilizing ability adapted to this. Operation control of the sterilization processing apparatus 31 is executed. Therefore, it is possible to operate the sterilization apparatus 31 properly and to reduce the operating cost. In addition, the controller 110 displays the measurement value of the biometer 121 on the display, so that the state of E. coli contained in the ballast water in the storage tank 30 can be constantly monitored.

  In addition, although this embodiment described the case where E. coli sensor was used as the biometer 121, it is not limited to this, but is based on an algae sensor based on fluorescence intensity or colorimetric reaction for detecting phytoplankton, or by image measurement. A biological sensor or the like may be used. Further, the sterilization treatment device 31 is not a device that uses an ultraviolet lamp, but may be an electrical treatment device, an ozone treatment device, or an OH radical generator such as a photocatalyst.

(Twelfth embodiment)
FIG. 13: is a figure which shows the structure of the ballast water purification apparatus regarding 12th Embodiment.

  The apparatus of the present embodiment is a residual chlorine concentration meter 131 disposed in a water pipe 23 for sending ballast water from the filtration device 21 to the storage tank 30 of the ship 3 in the purification device equipment on the ground equipment 2. And a pre-voyage sterilization control device (hereinafter referred to as a pre-voyage controller) 130. The pre-voyage controller 130 includes computer hardware and software.

  Based on the output signal from the residual chlorine concentration meter 131, the pre-voyage controller 130 controls the pump 28 for injecting the sterilizing chemical from the tank 26 that stores the sodium hypochlorite solution.

  In addition, about the component similar to the ballast water purification apparatus of 3rd Embodiment shown in FIG. 3, the same code | symbol is attached | subjected and description is abbreviate | omitted.

  Hereinafter, the effect of the ballast water purification apparatus of this embodiment is demonstrated.

The pre-voyage controller 130 continuously measures the measurement value (CL _PV ) of the residual chlorine concentration meter 131 when the ballast water is purified by the filtration device 21 and loaded into the storage tank 30 of the ship 3 before the voyage. Thus, the residual chlorine concentration of the ballast water flowing in the water pipe 23 is monitored.

The pre-voyage controller 130 controls the flow rate of the pump 28 by the PI control method based on the control model formulas shown in the following formulas (1) and (2). Specifically, the pre-voyage controller 130 calculates the flow control target value Q _CL of the pump 28 and transmits this Q _CL value to the pump 28. As a result, the pre-voyage controller 130 executes the control operation so that the pump 28 approaches the target value CL _SV of the residual chlorine concentration, for example, a value set to any value of 0.1 to 2.0 mg / L.

  According to this embodiment, the residual chlorine concentration meter 131 is used to monitor the residual chlorine concentration of the ballast water loaded in the ship 3 and adjust the concentration to a constant value. Inject sodium acid solution. Therefore, lack of sterilization of microorganisms remaining in the ballast water loaded in the ship 3 due to the lack of sodium hypochlorite can be solved.

  On the other hand, by adding too much sodium hypochlorite, it is possible to suppress the occurrence of carcinogenic by-products such as trihalomethane due to the reaction between organic substances in the ballast water and sodium hypochlorite. Therefore, it is possible to load ballast water in an appropriate environmental state into the ship 3 before voyage.

  In this embodiment, sodium hypochlorite injection is assumed as a sterilization treatment before voyage. However, the present invention is not limited to this, and other sterilizing agents may be used. Specifically, solid chlorine, liquid chlorine, carbon dioxide Chlorine and the like. Further, instead of a chemical injection method, an ultraviolet sterilizer, an ozone sterilizer, a photocatalyst sterilizer, or the like can be used.

  Further, in the present embodiment, the residual chlorine concentration meter 131 is used as a sensor. However, when other sterilization methods are applied as described above, naturally, a sensor corresponding to each sterilization apparatus is used. Become. Specifically, in the case of an ultraviolet sterilizer or a photocatalyst sterilizer, a sensor that measures ultraviolet light transmittance, such as an ultraviolet transmittance meter or a turbidimeter, is used. In this case, if the water permeability is deteriorated, the ultraviolet rays are not transmitted. Therefore, there is a causal relationship that the ultraviolet rays do not hit the organism and the sterilization efficiency is deteriorated. In the case of an ozone sterilizer, a water quality sensor such as a dissolved ozone concentration meter in water, an exhaust ozone concentration meter in the air, or a turbidity meter in water is used. This is because there is a causal relationship between these measured values and the ozone sterilizing power.

  Furthermore, although this embodiment uses the passing water of the filtration device 21 as a sterilization target position before voyage, it is not limited to that position. In other words, the present invention can be applied to a sterilization apparatus during voyage or after discharge after voyage.

(13th Embodiment)
FIG. 14 is a diagram illustrating a configuration of a ballast water purification apparatus according to the thirteenth embodiment.

  The apparatus of this embodiment is a structure provided on the ship (for example, cargo transport ship) 3, and is the structure which has the 1st and 2nd storage tanks 80 and 81 for two ballast waters. The ship 3 is provided with an ultraviolet sterilizer 31, a ballast water raw water supply pump 60, a ballast water supply pump 61 in the first storage tank 80, a ballast water drainage pump 62, and a water circulation pump 63. Yes. Furthermore, the water vessel 3 is provided with water pipes 70 to 78 and a control device 90.

  Hereinafter, the effect of this embodiment is demonstrated.

  First, the ship 3 of this embodiment supplies the ballast raw water 1 which is seawater to the 1st storage tank 80 of ballast water by driving the raw water supply pump 60, for example in the anchorage port of the country where the cargo was dropped. To do. When the ship 3 starts to sail, the control device 90 drives the ballast water supply pump 61 and drives the ultraviolet sterilizer 31. As a result, the ballast water in the first storage tank 80 is sterilized by malignant organisms by the sterilizer 31 and supplied to the second storage tank 81.

  On the other hand, at the discharge destination port of the ballast water, the ship 3 drives the drainage pump 62 to convert the purified ballast water in the first and second storage tanks 80 and 81 into the discharge destination seawater 4. Discharge.

  In such a basic operation, operational effects during the voyage of the ship 3 will be described below.

  First, as shown in FIG. 14, the inlet side of the water circulation pump 63 is connected to a lower portion in the second storage tank 81 through a water pipe 78. The outlet side of the pump 63 is connected to the upper part in the first storage tank 80.

  The control device 90 has a timer 91 inside, and drives and controls each of the ultraviolet sterilization device 31, the ballast water supply pump 61, and the water circulation pump 63. The control device 90 executes a control operation that can maintain navigation stability based on time information set in the timer 91 in advance before the ship 3 sails. That is, the timer 91 is set such that the drive start times of the ultraviolet sterilizer 31, the ballast water supply pump 61, and the water circulation pump 63 are the same time (t). Also, the drive stop times are set to be the same time (t + 1).

  During the voyage of the ship 3, the control device 90 simultaneously drives the ultraviolet sterilizer 31, the ballast water supply pump 61, and the water circulation pump 63 according to the time set by the timer 91. Here, it is assumed that the same flow rate set value is set for the ballast water supply pump 61 and the water circulation pump 63.

  By driving the ballast water supply pump 61, the ballast water is taken out from the first storage tank 80 and supplied to the second storage tank 81. At this time, the ballast water sterilized by the ultraviolet sterilizer 31 is supplied to the second storage tank 81.

  The amount of water in the first storage tank 80 is reduced by driving the ballast water supply pump 61. At the same time, ballast water is supplied from the second storage tank 81 to the first storage tank 80 by driving the water circulation pump 63. Accordingly, the decrease in the first storage tank 80 is supplemented by the supply from the second storage tank 81. By such a circulation action, after a predetermined time elapses, the first and second storage tanks 80 and 81 have no change in the amount of water, and the amount of water becomes constant.

  On the other hand, malignant organisms existing in the water in the first storage tank 80 cannot be propagated because the DNA is damaged by being irradiated with ultraviolet rays by the ultraviolet sterilizer 31. Therefore, purified water containing malignant organisms that have become unable to grow due to damage to the DNA is supplied into the second storage tank 81. By continuing the simultaneous operation of the ultraviolet sterilizer 31, the ballast water supply pump 61, and the water circulation pump 63, malignant organisms existing in the water in the first and second storage tanks 80 and 81 gradually. And at the end of the voyage of the ship 3, it is below the biological discharge standard for ballast water. At the end of the voyage, the control device 90 drives the drainage pump 62 to discharge the ballast water purified water in the first and second storage tanks 80 and 81 to the seawater 4 as the discharge destination.

  As described above, according to the present embodiment, the amount of water in the first and second storage tanks 80 and 81 is controlled by simultaneously driving and controlling the two pumps of the ballast water supply pump 61 and the water circulation pump 63. By making it constant, the stability of the ship 3 during voyage can be maintained. In other words, by avoiding an increase or decrease in the amount of water in one of the first and second storage tanks 80 and 81, it is possible to prevent the attitude of the ship 3 during voyage from becoming unstable. In addition, by driving and controlling the ultraviolet sterilizer 31 simultaneously with the two pumps 61 and 63, it becomes possible to satisfy the biological discharge standard of ballast water during the voyage.

  In the present embodiment, the control device 90 is configured to control the ultraviolet sterilization device 31, the ballast water supply pump 61, and the water circulation pump 63 to be driven at the same time using the internal timer 91. However, the present invention is not limited to this, and control in consideration of time delay may be used. That is, a configuration may be adopted in which the amounts of water in the first and second storage tanks 80 and 81 are made constant by driving the pumps 61 and 63 while being shifted little by little in time. Further, the control device 90 drives and controls each of the ultraviolet sterilizer 31, the ballast water supply pump 61, and the water circulation pump 63 based on the navigation speed information of the ship 3, for example, without using the internal timer 91. It may be configured.

(Fourteenth embodiment)
FIG. 15: is a top view which shows the structure of the ballast water purification apparatus regarding 14th Embodiment. That is, it is the figure which looked at the ship 3 shown in FIG. 14 from the top. It should be noted that the same components as those shown in FIG. Moreover, the apparatus of this embodiment is provided with all the components shown in FIG. 14, even if not shown in FIG.

  As shown in FIG. 15, the apparatus of the present embodiment has a third and fourth storage tanks 82 inside the ship 3, in addition to the first and second storage tanks 80 and 81 that are ballast water storage tanks. , 83 are arranged in a well-balanced and uniform manner.

  Between the first and second storage tanks 80 and 81, water pipes 73 and 74, an ultraviolet sterilizer 31, and a ballast water supply pump 61 are provided. In the present embodiment, a water pipe 78 and a water circulation pump 63 are provided between the second and third storage tanks 81 and 82, respectively.

  Between the third and fourth storage tanks 82 and 83, a water pipe 79a and a water circulation pump 64 are provided, respectively. In addition, the sterilizer 310 equivalent to the ultraviolet sterilizer 31 may be provided in the meantime. Furthermore, a water pipe 79b and a water circulation pump 65 are provided between the fourth and first storage tanks 83 and 80, respectively.

  In such a configuration, as in the thirteenth embodiment shown in FIG. 14 described above, during the voyage of the ship 3, the control device 90 performs the ballast water supply pump based on the time information set in the timer 91. 61, the water circulation pumps 63 to 65 and the ultraviolet sterilizer 31 are simultaneously driven and controlled. Here, it is assumed that the same flow rate setting value is set for the ballast water supply pump 61 and the water circulation pumps 63 to 65.

  As a result of such control, as in the thirteenth embodiment described above, the first to fourth storage tanks 80 to 83 have no change in the amount of water after a predetermined period of time due to the circulating action, and the amount of water is constant. Become. The ballast water sterilized by the ultraviolet sterilizer 31 is supplied to the second storage tank 81. Here, when the ultraviolet sterilizer 310 is provided, the sterilized ballast water is also supplied to the fourth storage tank 83.

  By continuing the simultaneous operation of the ultraviolet sterilizer 31 (or the sterilizer 310), the ballast water supply pump 61, and the water circulation pumps 63 to 65, the first to fourth storage tanks 80 to 83 are provided. The malignant organisms present in the water are gradually decreasing, and at the end of the voyage of the ship 3, it is below the biological discharge standard for ballast water. At the end of the voyage, the control device 90 drives the drainage pump 62 to discharge the ballast water purified water in the first to fourth storage tanks 80 to 83 to the seawater 4 that is the discharge destination. Therefore, according to this embodiment, the stability during the voyage of the ship 3 can be maintained by making the amount of water in the first to fourth storage tanks 80 to 83 constant. In addition, by driving and controlling the ultraviolet sterilizer 31 (or sterilizer 310), it becomes possible to satisfy the biological discharge standard of ballast water during the voyage.

  In the present embodiment, the four first to fourth storage tanks 80 to 83 and the pumps 61 and 63 to 65 are arranged four by one, but the number is merely an example, and other numbers may be used. Good. Further, the shape and capacity of the storage tank are not particularly limited. Furthermore, in this embodiment, the water pipe is connected to the adjacent storage tanks 80 to 83. However, the present invention is not limited to this, and the water pipe is connected on a diagonal line, or one water pipe is connected by skipping one. It is also possible to adopt a configuration such as

(Fifteenth embodiment)
FIG. 16 is a diagram showing a configuration of a ballast water purification apparatus according to the fifteenth embodiment. Note that the same constituent elements as those shown in FIG.

  The apparatus of the present embodiment is configured to return and circulate to the same ballast water storage tank. That is, as shown in FIG. 16, the outlet side of the ultraviolet sterilizer 31 is connected to the upper portion of the first storage tank 80 via the water pipe 740.

  The control device 90 according to the present embodiment simultaneously drives and controls the ballast water supply pump 61 and the ultraviolet sterilizer 31 based on the time information set in the timer 91 during the voyage of the ship 3, thereby the ultraviolet sterilizer. The ballast water purified by 31 is returned to the original storage tank 80. Due to this return circulation action, the amount of water in the first storage tank 80 hardly changes, so that the nautical stability of the ship 3 remains maintained. Needless to say, the amount of water in the second storage tank 81 does not change at all, so that the navigational state of the ship 3 is not affected.

  The effects other than the return circulation action are the same as those of the above-described thirteenth embodiment. Further, as in the above-described fourteenth embodiment, the number, type, capacity and the like of the storage tank are not particularly limited, and can be applied in any case.

(Sixteenth embodiment)
FIG. 17 is a diagram illustrating a configuration of a ballast water purification apparatus according to the sixteenth embodiment. Note that the same constituent elements as those shown in FIG.

  The apparatus of the present embodiment includes a water level meter 170 disposed in the first storage tank 80. The water level meter 170 is configured to send an output signal indicating a measured value that is an index of navigation stability to the control device 90.

  The control device 90 of the present embodiment drives and controls each of the ultraviolet sterilizer 31, the ballast water supply pump 61 and the water circulation pump 63 during the voyage of the ship 3 to maintain the voyage stability of the ship 3 during the voyage. To do. In this case, in the control device 90, the lower limit set value HL and the upper limit set value HH of the water level meter 170 are set in advance in the internal memory.

  The control device 90 drives the water circulation pump 63 to supply ballast water from the second storage tank 81 to the first storage tank 80 when the measured value of the water level gauge 170 becomes equal to or lower than the lower limit set value HL. . On the other hand, the control device 90 stops the driving of the water circulation pump 63 when the measured value of the water level meter 170 becomes equal to or higher than the upper limit set value HH. By controlling the water circulation pump 63 by such control (sequence control), the water level in the first storage tank 80 varies within the range between the lower limit set value HL and the upper limit set value HH. .

  As described above, according to the present embodiment, the measured value of the water level meter 170 is used as an index of the navigation stability of the ship 3, and the drive of the water circulation pump 63 is controlled based on this measured value, whereby the first storage tank The amount of water in 80 can be maintained within a certain range. Therefore, the navigation stability of the ship 3 can be maintained with a simple configuration. The effect of satisfying the biological discharge standard of ballast water during the voyage by the ultraviolet sterilizer 31 is the same as in the case of the thirteenth embodiment.

  In the present embodiment, one water level meter 170 is installed in the first storage tank 80, but it may be installed in the second storage tank 9. In this case, the control device 90 can input the measured values from the two water level gauges and execute drive control of the water circulation pump 63 so that the difference between the measured values is within a certain value. Therefore, it becomes possible to balance the amount of water not only in the first storage tank 80 but also in the entire storage tank composed of the first and second storage tanks 80 and 81, thereby further improving the stability of the ship 3 on the voyage. Can be improved.

  Further, in the present embodiment, the control device 90 is a control operation for driving and controlling the water circulation pump 63, but naturally the drive control of the ballast water supply pump 61 and the ultraviolet sterilization device 31 is also executed simultaneously.

(Seventeenth embodiment)
FIG. 18 is a diagram showing a configuration of a ballast water purification apparatus according to the seventeenth embodiment. Note that the same constituent elements as those shown in FIG.

  The apparatus according to the present embodiment includes a vibrometer 180 disposed in the center of the ship 3 on the deck. The vibrometer 180 is configured to send an output signal indicating a measured value (swing state value) which is an index of navigation stability to the control device 90.

  The control device 90 of the present embodiment drives and controls each of the ultraviolet sterilizer 31, the ballast water supply pump 61 and the water circulation pump 63 during the voyage of the ship 3 to maintain the voyage stability of the ship 3 during the voyage. To do. In this case, the control device 90 has a reference value for the shaking state value of the vibrometer 180 set in advance in the internal memory.

  The control device 90 drives the water circulation pump 63 to supply ballast water from the second storage tank 81 to the first storage tank 80 when the measurement value of the vibrometer 24 becomes equal to or less than the reference value. On the other hand, the control device 90 stops the driving of the water circulation pump 63 when the measured value of the vibrometer 24 exceeds the reference value. By controlling the water circulation pump 63 by such control (sequence control), the water level in the first storage tank 80 can be suppressed within a certain range.

  As described above, according to the present embodiment, the measurement value of the vibrometer 180 is used as an index of the navigation stability of the ship 3, and the drive of the water circulation pump 63 is controlled based on the measurement value, whereby the first storage tank The amount of water in 80 can be maintained within a certain range. Therefore, the navigation stability of the ship 3 can be maintained with a simple configuration. The effect of satisfying the biological discharge standard of ballast water during the voyage by the ultraviolet sterilizer 31 is the same as in the case of the thirteenth embodiment.

  In the present embodiment, one vibrometer 180 is installed at the center on the deck of the ship 3, for example, but may be installed at another location. Further, the number of vibrometers 180 is not limited to one and may be plural. It is also possible to use a shaking state value obtained by a measuring instrument other than the vibrometer 180. Furthermore, in this embodiment, the control device 90 is a control operation for driving and controlling the water circulation pump 63, but naturally the drive control of the ballast water supply pump 61 and the ultraviolet sterilization device 31 is also executed simultaneously.

(Eighteenth embodiment)
FIG. 19 is a diagram illustrating a configuration of a ballast water purification apparatus according to the eighteenth embodiment. Note that the same constituent elements as those shown in FIG.

  The apparatus according to the present embodiment includes an anemometer 190 disposed at the center of the ship 3 on the deck, for example. The anemometer 190 is configured to send an output signal indicating a measured value (wind speed value), which is an index of navigation stability, to the control device 90.

  The control device 90 of the present embodiment drives and controls each of the ultraviolet sterilizer 31, the ballast water supply pump 61 and the water circulation pump 63 during the voyage of the ship 3 to maintain the voyage stability of the ship 3 during the voyage. To do. In this case, in the control device 90, the reference value of the wind speed of the anemometer 190 is set in the internal memory in advance.

  The control device 90 drives the water circulation pump 63 to supply ballast water from the second storage tank 81 to the first storage tank 80 when the measured value of the anemometer 190 becomes equal to or less than the reference value. On the other hand, the control device 90 stops the driving of the water circulation pump 63 when the measured value of the anemometer 190 exceeds the reference value. By controlling the water circulation pump 63 by such control (sequence control), the water level in the first storage tank 80 can be suppressed within a certain range.

  As described above, according to the present embodiment, the measured value of the anemometer 190 is used as an index of the navigation stability of the ship 3, and the drive of the water circulation pump 63 is controlled based on the measured value, whereby the first storage tank The amount of water in 80 can be maintained within a certain range. Therefore, the navigation stability of the ship 3 can be maintained with a simple configuration. The effect of satisfying the biological discharge standard of ballast water during the voyage by the ultraviolet sterilizer 31 is the same as in the case of the thirteenth embodiment.

  In the present embodiment, one anemometer 190 is installed in the center of the ship 3 on the deck, for example, but may be installed in another place. Further, the anemometer 190 is not limited to one and may be a plurality. Further, in the present embodiment, the control device 90 is a control operation for driving and controlling the water circulation pump 63, but naturally the drive control of the ballast water supply pump 61 and the ultraviolet sterilization device 31 is also executed simultaneously. Furthermore, in addition to the anemometer 190, an anemometer (not shown) can be used or used together.

  Further, as a modification of the present embodiment, a configuration using a wave intensity measuring device instead of the anemometer 190 may be used. Even in this case, the same effects as those of the present embodiment can be obtained. In particular, since the strength of the wave is a factor having a great influence on the voyage stability, the configuration of the present modified example can reduce the voyage stability when the nautical stability of the ship 3 is reduced due to waves. Great effect to maintain.

  Furthermore, as a modification of the present embodiment, a configuration using a rainfall intensity meter instead of the anemometer 190 may be used. Even in this case, the same effects as those of the present embodiment can be obtained. In particular, since the influence on the voyage stability is great during heavy rain, the configuration of the present modified example has the effect of maintaining the voyage stability when the nautical stability of the ship 3 is reduced due to heavy rain. large.

  Of the water level meter 170, vibration meter 180, anemometer 190, wind direction meter, wave intensity measuring device, and rain intensity meter, the water circulation meter is used based on the measurement results from two or more types of measuring instruments. The drive control of the pump 63 may be executed to maintain the navigation stability of the ship 3. In this case, since a plurality of types of measurement results are used, it is possible to comprehensively evaluate the nautical stability, so that the nautical stability can be improved.

(Nineteenth embodiment)
FIG. 20 is a diagram illustrating a configuration of a ballast water purification apparatus according to the nineteenth embodiment. Note that the same constituent elements as those shown in FIG.

  The apparatus of this embodiment includes a communication device 92 connected to the control device 90 and a server 93 that manages weather information. The communication device 92 and the server 93 are connected by wireless communication. The server 93 transmits weather information such as a wind speed value, a wind direction value, a wave intensity value, and a rainfall intensity value during the voyage of the ship 3 to the control device 90 via the communication device 92.

  As described above, the control device 90 of the present embodiment drives and controls each of the ultraviolet sterilizer 31, the ballast water supply pump 61 and the water circulation pump 63 during the voyage of the ship 3, and Maintain voyage stability. In this case, the control device 90 stores the weather information received from the server 93 in the internal memory.

  According to the present embodiment, the control device 90 can receive weather information such as a wind speed value, a wind direction value, a wave intensity value, and a rainfall intensity value from the server 93 as necessary while the ship 3 is sailing. The control device 90 can maintain the nautical stability of the ship 3 by controlling the driving of the water circulation pump 63 based on the weather information. In this case, since it is not necessary to install various measuring instruments for acquiring weather information on the ship, a space necessary for installing the measuring instrument and maintenance are not required.

  Further, not only during the voyage of the ship 3, but also weather information on the voyage route at the destination can be used. Accordingly, it is possible to effectively use the control operation necessary for maintaining the navigation stability at the destination and the operation of the ballast water purification device in the future.

  Note that the present invention is not limited to the above-described embodiment as it is, and can be embodied by modifying the constituent elements without departing from the scope of the invention in the implementation stage. In addition, various inventions can be formed by appropriately combining a plurality of components disclosed in the embodiment. For example, some components may be deleted from all the components shown in the embodiment. Furthermore, constituent elements over different embodiments may be appropriately combined.

DESCRIPTION OF SYMBOLS 1 ... Raw ballast water, 2 ... Ground equipment, 3 ... Ship, 20 ... Pump, 21 ... Filtration apparatus,
22-24 ... Water piping, 30 ... Storage tank, 31 ... Sterilization processing device, 32 ... Pump,
33, 34 ... water piping, 35 ... cargo storage section, 60 ... raw water supply pump for ballast water,
61 ... Ballast water supply pump, 62 ... Ballast water drainage pump,
63 ... Water circulation pump, 70-78 ... Water piping, 80-83 ... Storage tank,
90 ... Control device, 91 ... Timer, 92 ... Communication device, 93 ... Server, 170 ... Water level meter,
180 ... vibrometer, 190 ... anemometer.

Claims (6)

In a ballast water purification apparatus applied to a ship having a storage tank for storing ballast water,
First water supply means for supplying ballast water filtered by a filtration means provided outside the ship to the storage tank;
During discharge of the pre-Symbol ballast water, and sterilizing means for sterilizing the ballast water stored in the reservoir tank,
Second water supply means for supplying ballast water stored in the storage tank to the sterilization means ;
A judging means for judging when supplying ballast water to the ship and when discharging the ballast water from the ship;
First control means for operating the filtering means when supplying the ballast water based on the determination result of the determining means and controlling the sterilizing means when draining the ballast water;
Detection means for detecting microorganisms or bacteria contained in the ballast water stored in the storage tank;
A ballast water purification apparatus comprising: a second control unit that controls a sterilization process of the sterilization unit based on a detection result of the detection unit. The first water supply means is
The ballast water purification apparatus according to claim 1, wherein the ballast water filtered by the filtering means and sterilized by the pretreatment sterilizing means is supplied to the storage tank. The pretreatment disinfecting means, ballast water purification device according to claim 2 is provided as a ship outside the facility.   The ballast water purification apparatus according to claim 1, further comprising waste water treatment means for collecting or decomposing suspended matter removed from the ballast water by the filtration means. Measuring means for measuring the remaining amount of chemicals for treating microorganisms or bacteria contained in the ballast water stored in the storage tank;
5. The apparatus according to claim 1, further comprising a third control unit configured to control a sterilization process of the sterilization unit before or after voyage of the ship based on a measurement value of the measurement unit. The ballast water purifier according to Item. A purification method of a ballast water purification device for purifying ballast water stored in a storage tank of a ship,
Supply the ballast water filtered by the filtering means provided outside the ship to the storage tank,
When discharging the ballast water, sterilize the ballast water stored in the storage tank,
Supply the ballast water stored in the storage tank to the sterilization means,
Judging when supplying ballast water to the ship and when discharging the ballast water from the ship,
Based on the determination result, the filtration means is operated when the ballast water is supplied, and the sterilization means is operated when the ballast water is drained.
Detecting microorganisms or bacteria contained in the ballast water stored in the storage tank,
A method for purifying a ballast water purifier that executes a procedure for controlling a sterilization process of the sterilizer based on the detection result .

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