Sterilizing and filtering device with bubble generator and ship ballast water treatment system using same

Abstract

The present invention provides a sterilization and filtration device for sterilizing and filtering seawater flowing in from the outside, the sterilization and filtration device comprising: an air supply unit for supplying air; a bubble generator that injects the air supplied from the air supply unit into the seawater, and generates turbulent flow while dispersing the air in the seawater, thereby generating microbubbles in the seawater; the filtering device is used for filtering the seawater generating the microbubbles through the filtering holes, and the microbubbles impact organisms in the seawater passing through the filtering holes so as to kill the organisms.

Description

Technical Field

[0001] The invention relates to a sterilizing and filtering device with a bubble generator and a ship ballast water treatment system using the same. Background Art

[0002] Generally speaking, in order to adjust balance and draft, ships are equipped with ballast tanks for storing ballast water.

[0003] Figure 1 A vessel according to the prior art is shown.

[0004] Reference Figure 1 According to the prior art, when a ship 10 performs a ballasting operation, a ballast pump 13 disposed on a seawater pipeline 12 is operated to supply seawater from a seafloor valve chest 11 to a ballast tank 14 through the seawater pipeline 12 .

[0005] Furthermore, when performing a deballasting operation, the front end of the seawater line 12 is blocked by valve control, and the ballast pump 13 is operated, thereby discharging ballast water discharged from the ballast tank 14 through the ballast water line 15 to the outside of the hull through the seawater line 12 and the discharge line 16.

[0006] According to the above method, a general ship sails by filling the ballast tanks with seawater through ballast operation at the port as needed, and discharges the ballast water stored in the ballast tanks to the outside of the hull through deballasting operation when arriving at the destination.

[0007] At this time, when a ship returns from a trip to a distant area or overseas and discharges ballast water as it is through deballasting operations, foreign organisms contained in the ballast water may interfere with the surrounding marine ecosystem and may cause environmental damage. Summary of the invention

[0008] Technical issues to be solved

[0009] The purpose of the present invention is to provide a sterilizing and filtering device with a bubble generator and a ship ballast water treatment system using the same. Specifically, when filtering seawater, microbubbles generated by the bubble generator are used to kill organisms in the seawater, thereby sterilizing and filtering the seawater. The sterilizing and filtering device with a bubble generator and a ship ballast water treatment system using the same.

[0010] The technical problems to be solved by the present invention are not limited to the technical problems mentioned above. For other technical problems not mentioned, those skilled in the art will be able to clearly understand them through the following description.

[0011] Solutions to the problem

[0012] In order to solve the above-mentioned problems, the present invention provides a sterilization and filtration device, which sterilizes and filters seawater flowing in from the outside, and includes: an air supply part, which is used to supply air; a bubble generator, which injects the air supplied from the air supply part into the seawater, and disperses the air in the seawater while generating turbulence, thereby generating microbubbles in the seawater; and a filtering device, which filters the seawater generating microbubbles through filter holes, and kills the organisms in the seawater passing through the filter holes by impacting the organisms with the microbubbles.

[0013] In addition, a sterilizing and filtering device is provided, which further includes a steam supply unit, wherein the steam supply unit supplies steam to the bubble generator to promote the death of organisms.

[0014] In addition, a sterilizing and filtering device is provided, wherein a bubble generator includes: a pipe component, the pipe component forms a flow path through which seawater passes, and forms an air injection port for injecting air supplied from an air supply unit into the seawater; a porous plate, the porous plate is arranged on the flow path, and forms a plurality of dispersion holes; a first turbulence generator, the first turbulence generator is arranged on the flow path and behind the porous plate, and forms a first turbulence generating hole; and a second turbulence generator, the second turbulence generator is arranged on the flow path and behind the first turbulence generator, and forms a second turbulence generating hole having a diameter larger than the first turbulence generating hole, when seawater flows into the flow path, air is injected into the seawater through the air injection port, the air injected into the seawater is dispersed through the plurality of dispersion holes, and turbulence is generated through the first turbulence generating hole and the second turbulence generating hole, thereby generating microbubbles in the seawater.

[0015] In addition, a sterilizing filter device is provided, wherein the porous plate, the first turbulence generator, and the second turbulence generator are provided in plurality according to the size of the holes formed inside and can be replaced from the pipe member so as to generate microbubbles of a size corresponding to the filter holes.

[0016] In addition, a sterilizing filtration device is provided, wherein the porous plate, the first turbulence generator and the second turbulence generator respectively include adjustment plates, and the sizes of the dispersion holes, the first turbulence generating holes and the second turbulence generating holes can be adjusted by the adjustment plates so as to generate microbubbles of a size corresponding to the filter holes.

[0017] In addition, a sterilizing and filtering device is provided, wherein a pipeline component is formed by a plurality of pipelines interconnected by flanges, and protrusions corresponding to the flanges are respectively formed on the porous plate, the first turbulator and the second turbulator, and fastening holes are formed on the protrusions for being fixed to the flanges by bolts, so that the porous plate, the first turbulator and the second turbulator are respectively fastened to the corresponding flanges between the plurality of pipelines.

[0018] In addition, the filter holes are formed to have a width of 30 to 50 μm, the dispersion holes are formed to have a diameter of 15 to 20 mm, the first turbulence generating holes are formed to cover 40 to 60% of the flow path in the pipe component, and the second turbulence generating holes are formed to cover 20 to 40% of the flow path in the pipe component, thereby forming microbubbles corresponding to the size of the filter holes through the dispersion holes, the first turbulence generating holes and the second turbulence generating holes.

[0019] In addition, a sterilizing filtration device is provided, wherein a bubble generator generates microbubbles of 1 to 100 μm in a seawater pipeline conveying seawater, a ballast tank into which seawater flows, or a filtration device to kill organisms in the seawater by the impact or pressure caused by the bursting of the bubbles.

[0020] In addition, a sterilizing filtration device is provided, wherein the filtration device includes: a main body shell, the main body shell is formed with an inlet and an outlet; a filter component, the filter component is formed with a plurality of filter holes for filtering the seawater flowing in through the inlet, and killing organisms in the seawater passing through the filter holes through microbubbles in the seawater; and an air exhaust valve, the air exhaust valve exhausts air accumulated in the main body shell due to the inflow of microbubbles to the outside.

[0021] In addition, a sterilizing filtration device is provided, wherein the filtration component has a plurality of filter components according to the size of the filter holes and is formed on the main body shell in a detachable manner.

[0022] In addition, a sterilizing filtration device is provided, wherein, in a filter component, when seawater passes through a plurality of filter holes, an air layer is formed in the filter component by microbubbles in the seawater, so that in the process of filtering impurities contained in the seawater, the impurities are accumulated in the air layer, thereby reducing the phenomenon of impurities being stuck in the filter holes.

[0023] In addition, a sterilizing and filtering device is provided, which further includes a backwashing portion, which is arranged on the inner side of the main body shell and is used for backwashing the filtering component.

[0024] In addition, a sterilizing and filtering device is provided, which includes: a first flow sensor, which is arranged on the connecting pipeline between the air supply part and the bubble generator to detect the flow rate of air supplied from the air supply part to the bubble generator; and a first control valve, which is arranged on the connecting pipeline and behind the first flow sensor, and adjusts the opening and closing amount of the first control valve by using the flow value detected by the first flow sensor, so that the air amount adjusted to correspond to the flow value is supplied to the bubble generator.

[0025] In addition, a sterilizing and filtering device is provided, which includes: a second flow sensor, which is arranged on the connecting pipeline between the steam supply part and the bubble generator to detect the flow rate of steam supplied from the steam supply part to the bubble generator; and a second control valve, which is arranged on the connecting pipeline and behind the second flow sensor, and adjusts the opening and closing amount of the second control valve by using the flow value detected by the second flow sensor, so that the steam amount adjusted to correspond to the flow value is supplied to the bubble generator.

[0026] On the one hand, in another aspect of the present invention for solving the above-mentioned problem, there is provided a ship ballast water treatment system, which sterilizes and filters the seawater flowing in from the outside through the seawater inlet and supplies it to the ballast tank, wherein the system comprises: a seawater pipeline, which is connected between the seawater inlet and the ballast tank and has a ballast pump for conveying seawater; a bubble generator, which is arranged on the seawater pipeline and generates microbubbles in the seawater flowing in through the seawater pipeline; an air supply unit, which supplies air for generating microbubbles to the bubble generator; a filter device, which is arranged on the seawater pipeline, filters the seawater passing through the bubble generator, kills organisms in the seawater through microbubbles, and then discharges it to the ballast tank; a ballast water pipeline, one side of which is connected to the ballast tank and the other side is connected to the front end of the seawater pipeline; a discharge pipeline, which is connected to the rear end of the seawater pipeline, and when performing a deballasting operation, the ballast water conveyed through the ballast water pipeline and the seawater pipeline is discharged from the ballast tank to the outside; and a control unit, which controls the ballasting operation and the deballasting operation.

[0027] Effects of the Invention

[0028] In the sterilizing and filtering device according to an embodiment of the present invention, microbubbles generated by the bubble generator flow into the filtering device. When seawater is filtered through the filtering device, the microbubbles can be used to kill organisms in the seawater, thereby sterilizing and filtering the seawater.

[0029] In addition, by adjusting the sizes of the dispersion holes and turbulence generating holes for generating microbubbles in the bubble generator, microbubbles of a size corresponding to the filter holes of the filter component arranged in the filter device can be generated. When seawater is filtered through the filter component, organisms in the seawater can easily collide with the microbubbles in the process of passing through the filter holes of the filter component together with the microbubbles, thereby easily killing the organisms in the seawater.

[0030] In addition, when the seawater is sterilized and filtered through the filtering device, an air layer is formed in the filter component through microbubbles and impurities are accumulated in the air layer, which can effectively reduce the phenomenon of impurities being stuck in the filter component. Therefore, when the filter component is backwashed, the impurities accumulated on the filter component can be easily removed, thereby improving the backwashing efficiency.

[0031] In addition, in the ship ballast water treatment system according to an embodiment of the present invention, a bubble generator and a filter device can be used to sterilize and filter seawater before supplying it to the ballast tank. When performing deballasting operations, the bubble generator and the filter device can also be used to re-sterilize and re-filter the ballast water discharged from the ballast tank before discharging it to the outside of the hull, thereby effectively preventing the ecosystem from being disrupted and the environment from being damaged by foreign organisms entering the sea area.

[0032] The effects that can be obtained by the present invention are not limited to the effects mentioned above. For other effects not mentioned, those skilled in the art will be able to clearly understand them through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 A vessel according to the prior art is shown.

[0034] Figure 2 A sterilizing filtration device with a bubble generator according to an embodiment of the present invention is shown.

[0035] Figure 3 The detailed structure of the bubble generator according to an embodiment of the present invention is shown.

[0036] Figure 4 The principle of killing organisms by the collapse of microbubbles according to an embodiment of the present invention is shown.

[0037] Figure 5 The shape of the filter component according to an embodiment of the present invention is shown.

[0038] Figure 6 FIG. 1 shows a state in which an air layer and impurities are accumulated on a filter component according to an embodiment of the present invention.

[0039] Figure 7 A sterilizing and filtering device with a steam supply portion according to an embodiment of the present invention is shown.

[0040] Figure 8 and Fig. 9 The structure and operation status of a ship ballast water treatment system according to an embodiment of the present invention are shown. DETAILED DESCRIPTION

[0041] Hereinafter, preferred embodiments according to the present invention will be described in detail with reference to the accompanying drawings.

[0042] The detailed description disclosed below in conjunction with the accompanying drawings is intended to illustrate exemplary embodiments of the present invention, and is not intended to represent the only embodiment that the present invention can be implemented.

[0043] In order to clearly illustrate the present invention in the drawings, parts irrelevant to the description may be omitted, and the same reference numerals may be used throughout the specification to denote the same or similar constituent elements.

[0044] In the embodiments of the present invention, expressions such as “or”, “at least one” and the like may represent one of the words listed together, or a combination of two or more thereof.

[0045] Figure 2 FIG. 1 shows a sterilizing filter device 100 having a bubble generator 20 according to an embodiment of the present invention. Figure 3 FIG. 1 shows a detailed structure of the bubble generator 120 according to an embodiment of the present invention.

[0046] According to an embodiment of the present invention, the sterilizing and filtering device 100 with a bubble generator 120 is arranged on a seawater pipeline 220 connected to a ballast tank in a hull and is a device for sterilizing and filtering seawater (or fresh water) flowing through the seawater pipeline 220. Microbubbles generated by the bubble generator 120 can be used to kill organisms contained in the seawater, and the microbubbles can be used to reduce the phenomenon of impurities being stuck in the filter component 134, thereby improving the cleaning efficiency when backwashing the filter component 134.

[0047] In particular, the bubble generator 120 can generate microbubbles of a size corresponding to the filter holes of the filter component 134. When filtering seawater, organisms in the seawater can easily collide with the microbubbles while passing through the filter holes of the filter component 134 together with the microbubbles, thereby easily killing the organisms in the seawater.

[0048] Reference Figure 2 and Figure 3 According to an embodiment of the present invention, a sterilizing and filtering device 100 may include an air supply unit 110 , a bubble generator 120 and a filtering device 130 .

[0049] The air supply part 110 is connected to the bubble generator 120 so as to supply air to the bubble generator 120 .

[0050] In addition, a first flow sensor 111 is provided on a connection line between the air supply part 110 and the bubble generator 120 , so that the flow rate of the air supplied to the bubble generator 120 can be detected by the first flow sensor 111 .

[0051] In addition, a first control valve 112 is provided behind the first flow sensor 111 on the connection line, so that the amount of air supplied from the air supply part 110 to the bubble generator 120 can be adjusted by controlling the opening and closing amount of the first control valve 112 .

[0052] At this time, by controlling the opening and closing amount of the first control valve 112 using the flow value detected by the first flow sensor 111 , the amount of air adjusted to correspond to the flow value can be supplied to the bubble generator 120 .

[0053] The bubble generator 120 may generate micro bubbles using the air supplied from the air supply part 110 .

[0054] Such a bubble generator 120 is connected to the front end of the filter device 130 or through the seawater pipeline 220 (refer to Figure 8 ) is connected to the filtering device 130 so that microbubbles can be supplied to the filtering device 130.

[0055] Here, the bubble generator 120 can generate microbubbles of a size corresponding to the filter hole size of the filter device 130 described later. As an example, in this embodiment, the bubble generator 120 generates microbubbles of 1 to 100 μm, thereby generating microbubbles corresponding to the filter hole size of 30 to 50 μm.

[0056] Specifically, the bubble generator 120 of this embodiment includes: a pipe component 121, the inner side of which forms a flow path for seawater to pass through, and an air injection port 122 for injecting air into the flow path; a porous plate 123, which is arranged on the flow path of the pipe component 121; a first turbulence generator 125, which is arranged on the flow path of the pipe component 121 and is arranged behind the porous plate 123; and a second turbulence generator 127, which is arranged on the flow path of the pipe component 121 and is arranged behind the first turbulence generator 125.

[0057] Here, the pipe member 121 is a tube with front and rear ends opened, and is connected to the seawater pipeline 220 (see Figure 8 ) is connected so that the seawater pipeline 220 (refer to Figure 8)The incoming seawater passes through the flow path inside it.

[0058] At this time, an air injection port 122 connected to the air supply unit 110 is formed on the front end side of the duct member 121 , so that the air supplied from the air supply unit 110 can flow into the inner flow path through the air injection port 122 .

[0059] In addition, the porous plate 123 may be formed as a plate body having a plurality of dispersion holes 124 formed therein and provided on the flow path of the duct member 121 , so that the air flowing in together with the seawater can be dispersed.

[0060] That is, the porous plate 123 is arranged in the form of blocking the flow path of the pipe component 121, so that the seawater flowing into the inner flow path through the front end of the pipe component 121 and the air injected into the air injection port 122 pass through the multiple dispersion holes 124 formed on the porous plate 123. In this process, the multiple dispersion holes 124 formed on the porous plate 123 can disperse the air contained in the seawater in the form of bubbles.

[0061] In addition, the first turbulator 125 is formed as a plate body having a first turbulence generating hole 126 formed in the center, and the second turbulator 127 may be formed as a plate body having a second turbulence generating hole 128 having a diameter greater than that of the first turbulence generating hole 126 formed in the center.

[0062] At this time, the first turbulator 125 and the second turbulator 127 are also arranged in the form of blocking the flow path of the pipe component 121. The first turbulator 125 is arranged on the flow path of the pipe component 121 and behind the porous plate 123. The second turbulator 127 can be arranged on the flow path of the pipe component 121 and behind the first turbulator 125.

[0063] Accordingly, the seawater flowing into the inner flow path through the front end of the pipe component 121 passes through the porous plate 123 together with the air injected into the air injection port 122 and disperses the air contained in the seawater in the form of bubbles. Then, through the first turbulence generating hole 126 and the second turbulence generating hole 128 that generate turbulence, microbubbles can be generated in the seawater by generating turbulence.

[0064] At this time, the microbubbles generated by the bubble generator 120 may flow into the filtering device 130, thereby serving to kill organisms contained in the seawater.

[0065] As an example, each dispersion hole 124 formed in the porous plate 123 can be formed to have a diameter of approximately 15 to 20 mm, the first turbulence generating holes 126 formed in the first turbulence generator 125 can be formed to cover 40% to 60% of the flow path in the pipe part 121, and the second turbulence generating holes 128 formed in the second turbulence generator 127 can be formed to cover 20% to 40% of the flow path in the pipe part 121. Microbubbles of 1 to 100 μm can be generated through such dispersion holes 124, first turbulence generating holes 126 and second turbulence generating holes 128.

[0066] In this case, microbubbles having a size corresponding to the filtration holes of 30 to 50 μm of the filter device 130 described later may be generated.

[0067] In addition, the porous plate 123 , the first turbulator 125 , and the second turbulator 127 may be detachably disposed on the pipe member 121 .

[0068] Therefore, as an example, a plurality of porous plates 123 having dispersion holes 124 with different diameters, a plurality of first turbulence generators 125 having different diameters of first turbulence generating holes 126, and a plurality of second turbulence generators 127 having different diameters, when the filter hole size of the filter device 130 changes, the porous plates 123, the first turbulence generators 125, and the second turbulence generators 127 can be selectively replaced to generate microbubbles corresponding to the changed filter hole size.

[0069] In addition, as another example, the dispersion holes 124 of the porous plate 123, the first turbulence generating holes 126 of the first turbulence generator 125, and the second turbulence generating holes 128 of the second turbulence generator 127 can be formed in a size-adjustable manner by applying an adjustment plate structure, etc. When the filter hole size of the filter device 130 changes, the size of the dispersion holes 124, the first turbulence generating holes 126, and the second turbulence generating holes 128 can be selectively adjusted to generate microbubbles corresponding to the changed filter hole size.

[0070] In addition, refer to Figure 3 When a porous plate 123, a first turbulator 125 and a second turbulator 127 are arranged on the pipe component 121, as an example, the pipe component 121 is formed by a first pipe 121a, a second pipe 121b, a third pipe 121c and a fourth pipe 121d which are interconnected by flanges. The porous plate 123 can be arranged between the flanges of the first pipe 121a and the second pipe 121b, the first turbulator 125 can be arranged between the flanges of the second pipe 121b and the third pipe 121c, and the second turbulator 127 can be arranged between the flanges of the third pipe 121c and the fourth pipe 121d.

[0071] At this time, protrusions 123a, 125a, 127a are formed on the porous plate 123, the first turbulator 125 and the second turbulator 127, and the protrusions 123a, 125a, 127a are correspondingly inserted between the flanges of the pipeline, and fastening holes 123b, 125b, 127b are formed on the protrusions 123a, 125a, 127a so that bolts for fastening the flanges can pass through, so that the protrusions 123a, 125a, 127a can be fastened between the flanges of the pipeline.

[0072] On the one hand, referring to Figure 2 The filtering device 130 can sterilize and filter the seawater flowing in through the bubble generator 120 .

[0073] Specifically, the filter device 130 of this embodiment may include: a main body shell 131, which is formed with an inlet 132 and an outlet 133; a filter component 134, which sterilizes and filters the seawater flowing in through the inlet 132; an air exhaust valve 135, which is used to exhaust the air flowing into the inside of the main body shell 131; and a backwashing part 136, which is used to backwash the filter component 134.

[0074] Here, the body housing 131 may be formed in a cylindrical shape, and may have an inlet 132 formed on one side for the seawater to flow in through the bubble generator 120 , and an outlet 133 formed on the other side for discharging the seawater sterilized and filtered by the filter member 134 .

[0075] As an example, the body housing 131 of the present embodiment may form an inlet 132 at the front end and an outlet 133 at the lower portion.

[0076] In addition, the filter component 134 may be formed in a tubular shape with an open front end, and a plurality of filter holes may be formed on the outer peripheral surface so that the seawater flowing into the inside through the open front end can be filtered and discharged.

[0077] As an example, the outer peripheral surface of the filter component 134 may be formed as a lattice-shaped mesh, filter holes may be formed between the meshes, and the filter holes may be formed to have a width of 30 to 50 μm so as to effectively filter various impurities in the seawater.

[0078] At this time, the filter element 134 can be replaced from the main body housing 131, and can be replaced with a filter element having filter holes of a different size from the above-mentioned filter holes according to the type of impurities.

[0079] Such a filter element 134 is horizontally arranged along the center of the main body shell 131 , and its open front end can be connected to the inlet 132 of the main body shell 131 , so that seawater flowing into the inlet 132 can move toward the inside of the filter element 134 .

[0080] At this time, the seawater flowing into the inner side of the filter element 134 and passing through the filter holes on the outer peripheral surface may flow along the inner edge of the main body casing 131 and be discharged from the discharge port 133 at the lower portion of the main body casing 131 .

[0081] In the process of sterilizing and filtering seawater through the filter component 134, seawater containing microbubbles generated by the bubble generator 120 flows into the inner side of the filter component 134 through the inlet 132 of the main body shell 131, so that the inflowing seawater passes through the filter holes of the filter component 134, and impurities in the seawater are filtered out by the filter holes. Organisms in the seawater may collide with the microbubbles and be killed in the process of passing through the filter holes together with the microbubbles.

[0082] At this time, the microbubbles generated by the bubble generator 120 are formed in a size corresponding to the filter holes of the filter component 134. Therefore, when the microbubbles pass through the filter holes of the filter component 134, they are easy to collide with the organisms flowing into the filter holes, and the organisms can be killed by the impact of the microbubbles.

[0083] That is, this is a method of killing organisms by destroying the cell walls on the surface of the organisms through the impact of microbubbles.

[0084] In addition, organisms in seawater can also be killed by the impact of the collapse of microbubbles.

[0085] As an example, the microbubbles generated by the bubble generator 120 may be generated in the seawater line 220 (see Figure 8 ) and the process of flowing inside the filter device 130 or bursting after flowing into the ballast tank, the surrounding organisms can be killed by the impact of the microbubble bursting, which will be combined with the following Figure 4 This is explained in detail.

[0086] In addition, an air discharge valve 135 may be provided at an upper portion of the body housing 131 .

[0087] That is, the microbubbles passing through the filter member 134 are accumulated as air in the upper portion of the body housing 131 due to a specific gravity difference, and thus the accumulated air can be discharged to the outside using the air discharge valve 135 .

[0088] In addition, the backwashing part 136 may include: a rotating tube 137, which is arranged along the inner center of the filter component 134; a suction component 138, which is arranged in plurality along the length direction of the rotating tube 137, and sucks impurities attached to the inner side of the filter component 134 and makes them flow into the rotating tube 137; and a motor part 139, which rotates the rotating tube 137.

[0089] Here, a backwash pump (not shown) providing suction may be connected to the rotating pipe 137 so that the suction part 138 can suck in impurities.

[0090] When the filter element 134 is backwashed, the backwashing unit 136 rotates the rotating tube 137 through the motor unit 139, so that the plurality of suction components 138 provided on the rotating tube 137 rotates with the rotating tube 137 as the axis and sucks the impurities attached to the inner side of the filter element 134 as a whole and makes them flow into the rotating tube 137 together with the seawater. The impurities flowing into the rotating tube 137 can be discharged through the discharge line 250 (refer to Figure 8 )discharge.

[0091] Figure 4 The principle of killing organisms by the collapse of microbubbles according to an embodiment of the present invention is shown.

[0092] In this embodiment, microbubbles with a size of 1 to 100 μm can be generated by the bubble generator 120. Among the generated microbubbles, microbubbles with a size corresponding to the filter holes of the filter component 134 (for example, 30 to 50 μm) can collide with organisms in the seawater and kill them when passing through the filter holes of the filter component 134.

[0093] In addition, the microbubbles generated by the bubble generator 120 can be used in the seawater pipeline 220 (refer to Figure 8 ) and the filter device 130 or after flowing into the ballast tank, it ruptures and kills the surrounding organisms.

[0094] Specifically, refer to Figure 4 The microbubbles generated by the bubble generator 120 rise to the water surface by buoyancy and form a hemispherical shape wrapped by the membrane 1 on the water surface. The membrane 1 becomes thinner due to gravity and capillary force. When the membrane 1 begins to break, a rim 2 can be formed.

[0095] In addition, the edge 2 and the membrane 1 are sucked into the water surface by surface tension, so that water accumulates inside the edge 2 and the membrane 1 and the volume increases, and the edge 2 moves symmetrically, and the moving edges 2 meet and collide at a certain point in the lower part of the cavity 3, thereby generating high pressure.

[0096] In addition, the high pressure thus generated can push the surrounding fluid to generate a fluid jet 4 and a submerged jet 5 .

[0097] In the above process, the surrounding organisms can be effectively killed by the collision or pressure generated by the kinetic energy of the edge 2, and when the size of the microbubbles is less than 100 μm, an excellent biocidal effect can be exhibited.

[0098] Figure 5 FIG. 1 shows the shape of the filter component 134 according to an embodiment of the present invention. Figure 6 FIG. 1 shows a state in which an air layer a and impurities f are accumulated on the filter component 134 according to an embodiment of the present invention.

[0099] Reference Figure 5 and Figure 6 , the filter component 134 of this embodiment can be formed as a mesh woven in a zigzag shape.

[0100] When seawater passes through the filter hole h, the filter component 134 as described above can form an air layer a in the filter component 134 through the microbubbles contained in the seawater, and the impurities contained in the seawater accumulate in the air layer a, thereby reducing the phenomenon that the impurities f are stuck in the filter hole h.

[0101] In addition, since the phenomenon of impurities being stuck is reduced by the air layer a of the filter component 134, the impurities f accumulated on the filter component 134 can be easily removed when the filter component 134 is backwashed, thereby cleaning the filter component 134.

[0102] As described above, according to the sterilizing filter device 100 of this embodiment, the bubble generator 120 generates microbubbles and flows them into the filter device 130, so that when the seawater is filtered through the filter component 134 in the filter device 130, the microbubbles can be used to effectively kill the organisms contained in the seawater, and the microbubbles form an air layer a in the filter component 134 to reduce the phenomenon of impurities f being stuck, so that when the filter component 134 is backwashed, the cleaning efficiency can be greatly improved.

[0103] On the one hand, the sterilizing and filtering device 100 according to this embodiment may further include a steam supply unit 140 .

[0104] Figure 7 A sterilizing and filtering device 100 having a steam supply portion 140 according to an embodiment of the present invention is shown.

[0105] Reference Figure 7A steam injection port 129 may be further formed on the pipe part 121 of the bubble generator 120 , and the high-temperature steam supplied from the steam supply part 140 is injected into the steam injection port 129 .

[0106] In addition, a second flow sensor 141 is provided on the connection line between the steam supply part 140 and the bubble generator 120 , and the flow rate of the steam supplied to the bubble generator 120 can be detected by the second flow sensor 141 .

[0107] In addition, a second control valve 142 is provided behind the second flow sensor 141 on the connecting line, and the amount of steam supplied from the steam supply part 140 to the bubble generator 120 can be adjusted by controlling the opening and closing amount of the second control valve 142 .

[0108] At this time, by controlling the opening and closing amount of the second control valve 142 using the flow value detected by the second flow sensor 141 , the steam amount adjusted to correspond to the flow value can be supplied to the bubble generator 120 .

[0109] The high-temperature steam supplied from the steam supply unit 140 is injected into the pipe part 121 of the bubble generator 120 and can flow into the filter device 130 together with the microbubbles generated by the bubble generator 120. In the filter device 130, in the process of killing organisms in the seawater by microbubbles, the simultaneous inflow of high-temperature steam can promote the death of the organisms.

[0110] on the one hand, Figure 8 and Fig. 9 The structure and operation status of a ship ballast water treatment system 200 according to an embodiment of the present invention are shown.

[0111] Reference Figure 8 and Fig. 9 According to an embodiment of the present invention, a ship ballast water treatment system 200 may include a seawater inlet 210, a seawater pipeline 220, a bubble generator 120, a filter device 130, a backwash water pipeline 230, a ballast water pipeline 240, a discharge pipeline 250 and a control unit (not shown).

[0112] Here, the seawater inflow portion 210 may be formed as a sea chest for seawater to enter and exit the hull, and the seawater flowing in from the seawater inflow portion 210 may be transported to the ballast tank T through the seawater pipeline 220 via the bubble generator 120 and the filter device 130 .

[0113] In addition, a ballast pump 221 and a flow meter 222 may be provided in front of the bubble generator 120 on the seawater pipeline 220 .

[0114] The bubble generator 120 may be connected to the air supply unit 110 , and optionally, may be connected to the steam supply unit 140 .

[0115] In addition, the connecting pipeline connecting the bubble generator 120 and the air supply part 110 may have a first flow sensor 111 and a first control valve 112, and the connecting pipeline connecting the bubble generator 120 and the steam supply part 140 may also have a second flow sensor 141 and a second control valve 142.

[0116] A backwash water pipeline 230 is connected to the portion of the washing water discharged from the filtering device 130 , and the backwash water pipeline 230 may be connected to a discharge pipeline 250 for discharging seawater from the hull.

[0117] Here, the backwash water pipeline 230 may be provided with a backwash pump 231 and a flow meter 232 .

[0118] In addition, a bypass line 260 for bypassing the filter device 130 is connected to the seawater pipeline 220 , and the seawater passing through the bubble generator 120 can be selectively transported through the bypass line 260 to bypass the filter device 130 .

[0119] A ballast water pipeline 240 for discharging ballast water during deballasting operation may be connected to the ballast tank T, and the ballast water pipeline 240 may be connected to a front end of the seawater pipeline 220 .

[0120] In addition, a discharge pipeline 250 is connected to the rear end of the seawater pipeline 220. When performing deballasting operations, the ballast water transported from the ballast tank T through the ballast water pipeline 240 and the seawater pipeline 220 can be discharged to the outside of the hull through the discharge pipeline 250.

[0121] A control portion (not shown) may control the ballasting operation and the deballasting operation.

[0122] Specifically, refer to Figure 8 When performing the ballast operation, the control unit (not shown) may operate the ballast pump to transfer seawater from the seawater inflow unit 210 to the bubble generator 120 through the seawater pipeline 220 .

[0123] At the same time, the air supply part 110 may be operated to supply air for generating micro bubbles to the bubble generator 120 , and optionally, the air supply part 110 and the steam supply part 140 may be operated simultaneously to supply air and steam to the bubble generator 120 .

[0124] Next, the seawater containing microbubbles after passing through the bubble generator 120 is transported to the filter device 130 through the seawater pipeline 220. The filter device 130 filters the impurities contained in the seawater and kills the organisms contained in the seawater through the microbubbles.

[0125] At this time, when the air supply part 110 and the steam supply part 140 are operated simultaneously, the seawater containing microbubbles and steam through the bubble generator 120 is delivered to the filter device 130, so that when killing organisms by microbubbles, the high temperature steam can promote the death of the organisms.

[0126] Next, the seawater sterilized and filtered by the filtering device 130 may be supplied to the ballast tank T through the rear end of the seawater pipeline 220 .

[0127] During the process of sterilizing and filtering seawater through the filter device 130, the inside of the filter device 130 can be backwashed at the same time. The cleaning water discharged after cleaning the inside of the filter device 130 is sterilized cleaning water, which can be discharged to the outside of the hull by the backwash pump 231 via the backwash water pipeline 230 through the discharge pipeline 250.

[0128] During the above-mentioned ballasting operation, the control unit (not shown) can use the flow rate of inflowing seawater detected by the flow meter 222 set on the seawater pipeline 220, the air injection amount detected by the first flow sensor 111 of the air supply unit 110, or the steam injection amount detected by the second flow sensor 141 of the steam supply unit 140, etc. to analyze and predict the degree of death of organisms caused by microbubbles in the filter device 130, and accumulate and store the analysis and prediction information in the internal database.

[0129] According to this, based on the information accumulated in the database, the amount of air or steam supplied to the bubble generator 120 may be adjusted corresponding to the amount of seawater inflow.

[0130] In addition, the control unit (not shown) detects the flow rate of the cleaning water discharged from the filter device 130 through the flow meter 232 set on the backwash water pipeline 230, so that the flow rate of seawater supplied from the filter device 130 to the ballast tank T through the seawater pipeline 220 can be detected in real time.

[0131] Reference Fig. 9 When performing the deballasting operation, the control unit (not shown) blocks the front inlet side of the seawater pipeline 220 through valve control and operates the ballast pump 221, so that the ballast water discharged from the ballast tank T flows into the seawater pipeline 220 through the ballast water pipeline 240.

[0132] In addition, the ballast water flowing into the seawater pipeline 220 is transported to the filter device 130 in a state containing microbubbles or microbubbles and steam through the bubble generator 120. The filter device 130 re-sterilizes and re-filters the ballast water and then discharges it. The discharged ballast water can be discharged to the outside of the hull through the discharge pipeline 250.

[0133] At this time, the rear end of the seawater pipeline 220 connected to the ballast tank T is blocked by valve control, so that the ballast water transported from the filtering device 130 to the seawater pipeline 220 can flow into the discharge pipeline 250 .

[0134] As described above, in this embodiment, when performing ballasting operations, the bubble generator 120 and the filter device 130 can be used to sterilize and filter the seawater before supplying it to the ballast tank T. When performing deballasting operations, the bubble generator 120 and the filter device 130 can also be used to sterilize and filter the ballast water discharged from the ballast tank T before discharging it to the outside of the hull, thereby effectively preventing the ecosystem from being disrupted and the environment from being damaged due to the entry of foreign organisms into the sea area.

[0135] On the one hand, in the above-mentioned embodiment, when performing the deballasting operation, although the bubble generator 120 and the filter device 130 can be used to sterilize and filter the ballast water discharged from the ballast tank T before discharging it, when sterilization and filtering are not required, the ballast water discharged from the ballast tank T can also be discharged to the outside through the bypass line 260 to bypass the filter device 130.

[0136] In addition, in the ship ballast water treatment system 200 of the above-mentioned embodiment, although the use of microbubbles or steam to kill organisms in seawater is used as an example, it is obvious that auxiliary means such as a UV sterilizer, an electrolyzer for producing hypochlorous acid, and a disinfectant injector may also be included.

[0137] As described above, in the sterilizing and filtering device 100 according to an embodiment of the present invention, the microbubbles generated by the bubble generator 120 flow into the filtering device 130, so that when the seawater is filtered through the filtering device 130, the microbubbles can be used to kill organisms in the seawater, and the seawater can be sterilized and filtered.

[0138] In addition, by adjusting the size of the dispersion holes 124 and the turbulence generating holes 126 and 128 for generating microbubbles in the bubble generator 120, microbubbles of a size corresponding to the filter holes h of the filter component 134 arranged in the filter device 130 can be generated, so that when seawater is filtered through the filter component 134, the organisms in the seawater can easily collide with the microbubbles in the process of passing through the filter holes h of the filter component 134 together with the microbubbles, thereby easily killing the organisms in the seawater.

[0139] In addition, when the seawater is sterilized and filtered through the filter device 130, an air layer a is formed by microbubbles in the filter component 134 and impurities f are accumulated in the air layer a, which can effectively reduce the phenomenon of impurities f being stuck in the filter component 134. Therefore, when the filter component 134 is backwashed, the impurities accumulated on the filter component 134 can be easily removed, thereby improving the backwashing efficiency.

[0140] In addition, in the ship ballast water treatment system 200 according to an embodiment of the present invention, the bubble generator 120 and the filter device 130 can be used to sterilize and filter the seawater and then supply it to the ballast tank T. When performing deballasting operations, the bubble generator 120 and the filter device 130 can also be used to re-sterilize and re-filter the ballast water discharged from the ballast tank T and then discharge it to the outside of the hull, thereby effectively preventing the ecosystem from being disrupted and the environment from being damaged due to the entry of foreign organisms into the sea.

[0141] The embodiments of the present invention disclosed in this specification and the drawings are provided only as specific examples in order to easily illustrate the technical content of the present invention and to help understand the present invention, and are not intended to limit the scope of the present invention.

[0142] Therefore, the scope of the present invention should be understood as including all changes or modifications based on the technical concept of the present invention other than the embodiments disclosed herein.

Claims

1. A sterilizing and filtering device, which sterilizes and filters seawater flowing in from the outside, in, include: an air supply unit, the air supply unit being used to supply air; a bubble generator that injects air supplied from the air supply unit into the seawater and disperses the air in the seawater while generating turbulence, thereby generating microbubbles in the seawater; and A filtering device, wherein the filtering device filters the seawater that generates the microbubbles through filtering holes, and uses the microbubbles to impact organisms in the seawater that pass through the filtering holes to kill the organisms, The bubble generator generates microbubbles of a size corresponding to the filter holes, so that when the filtering device filters seawater, the microbubbles passing through the filter holes are guided to collide with organisms in the seawater.

2. The sterilizing filtration device according to claim 1, wherein: A steam supply is also included, the steam supply supplying steam to the bubble generator to promote the death of the organisms.

3. The sterilizing filtration device according to claim 1, wherein: The bubble generator comprises: a duct member having a flow path through which seawater passes and an air injection port for injecting air supplied from the air supply unit into the seawater; A porous plate, the porous plate is arranged on the flow path and is formed with a plurality of dispersed holes; a first turbulence generator, which is disposed on the flow path and behind the porous plate and is formed with a first turbulence generating hole; and a second turbulence generator, the second turbulence generator being arranged on the flow path and behind the first turbulence generator and having a second turbulence generating hole having a diameter larger than that of the first turbulence generating hole, When seawater flows into the flow path, air is injected into the seawater through the air injection port, the air injected into the seawater is dispersed through the multiple dispersion holes, and turbulence is generated through the first turbulence generating hole and the second turbulence generating hole, thereby generating microbubbles in the seawater.

4. The sterilizing filtration device according to claim 3, wherein: The porous plate, the first turbulence generator, and the second turbulence generator each have a plurality of sizes according to the holes formed therein, and can be replaced from the duct member so as to generate microbubbles of a size corresponding to the filter holes.

5. The sterilizing filtration device according to claim 3, wherein: The porous plate, the first turbulence generator and the second turbulence generator respectively include adjustment plates, and the sizes of the dispersion holes, the first turbulence generating holes and the second turbulence generating holes can be adjusted by the adjustment plates so as to generate microbubbles of a size corresponding to the filter holes.

6. The sterilizing filtration device according to claim 1, wherein: The bubble generator generates microbubbles of 1 to 100 μm in a seawater pipeline conveying seawater, a ballast tank into which seawater flows, or the filtering device to kill organisms in the seawater through shock or pressure caused by bubble collapse.

7. The sterilizing filtration device according to claim 1, wherein: The filtering device comprises: A body shell, wherein the body shell is formed with an inlet and an outlet; a filter member having a plurality of filter holes formed therein for filtering the seawater flowing in through the inlet, and killing organisms in the seawater passing through the filter holes by microbubbles in the seawater; and An air discharge valve discharges air accumulated in the main body housing due to the inflow of the microbubbles to the outside.

8. The sterilizing filtration device according to claim 7, wherein: The filter component has a plurality of filter holes according to the size of the filter holes, and is formed on the main body shell in a detachable manner.

9. The sterilizing filtration device according to claim 7, wherein: In the filter component, When the seawater passes through the plurality of filter holes, microbubbles in the seawater form an air layer in the filter component, so that in the process of filtering impurities contained in the seawater, the impurities are accumulated in the air layer, thereby reducing the phenomenon that the impurities are stuck in the filter holes.

10. The sterilizing filtration device according to claim 1, in, include: a first flow sensor, the first flow sensor being disposed on a connecting line between the air supply portion and the bubble generator to detect a flow rate of air supplied from the air supply portion to the bubble generator; and a first control valve, the first control valve being arranged on the connecting pipeline and behind the first flow sensor, The opening and closing amount of the first control valve is adjusted by using the flow value detected by the first flow sensor, so that the amount of air adjusted to correspond to the flow value is supplied to the bubble generator.

11. The sterilizing filtration device according to claim 2, in, include: a second flow sensor, the second flow sensor being disposed on a connecting pipeline between the steam supply part and the bubble generator to detect a flow rate of steam supplied from the steam supply part to the bubble generator; and a second control valve, the second control valve being arranged on the connecting pipeline and behind the second flow sensor, The opening and closing amount of the second control valve is adjusted by using the flow value detected by the second flow sensor, so that the amount of steam adjusted to correspond to the flow value is supplied to the bubble generator.

12. A ship ballast water treatment system, which sterilizes and filters seawater flowing in from the outside through a seawater inflow portion and supplies the seawater to a ballast tank, in, include: a seawater pipeline connected between the seawater inlet and the ballast tank and having a ballast pump for conveying seawater; a bubble generator, which is disposed on the seawater pipeline and generates microbubbles in the seawater flowing in through the seawater pipeline; an air supply portion that supplies air for generating microbubbles to the bubble generator; and A filtering device is provided on the seawater pipeline, and filters the seawater passing through the bubble generator through the filtering holes, and uses the microbubbles to impact the organisms in the seawater passing through the filtering holes to kill the organisms, and then discharges the organisms to the ballast tank. The bubble generator generates microbubbles of a size corresponding to the filter holes, so that when the filtering device filters seawater, the microbubbles passing through the filter holes are guided to collide with organisms in the seawater.

13. The ship ballast water treatment system according to claim 12, wherein: Also includes: a flow meter, the flow meter being arranged on the seawater pipeline and detecting the flow rate of the seawater flowing in from the seawater inflow portion; a first flow sensor that detects the amount of air supplied from the air supply portion to the bubble generator; and A control unit, which uses the flow rate of seawater detected by the flow meter and the amount of air detected by the first flow sensor to analyze the degree of death of organisms caused by microbubbles in the filtering device, and accumulates and stores the analyzed data internally, thereby adjusting the amount of air corresponding to the flow rate of inflowing seawater based on the accumulated data.

14. The ship ballast water treatment system according to claim 13, wherein: Also includes: a steam supply unit that supplies steam to the bubble generator; and a second flow sensor, the second flow sensor detecting the amount of steam supplied from the steam supply portion to the bubble generator, In the control unit, When the steam supply unit is in operation, the flow rate of seawater detected by the flow meter, the amount of air detected by the first flow sensor, and the amount of steam detected by the second flow sensor are used to analyze the degree of death of organisms in the filter device, and the analyzed data are accumulated and stored internally, so that the amount of air or steam is adjusted according to the flow rate of the inflowing seawater based on the accumulated data.

Images