JP4958219B2 - Ship ballast water treatment system - Google Patents

Description

  In order to prevent microorganisms and bacteria from migrating from the departure port to the arrival port along with the ballast water injection of the ship at the port, the present invention can perform appropriate treatment on the ballast water during the ballast water injection / drainage. Relates to the device.

When a ship unloads cargo at a port, in order to maintain the stability of the hull, when the ship is charged with water in the ballast tank and left as it is, minute aquatic organisms and bacteria mixed in the ballast water will remain at other ports. When cargo is loaded, it is discharged together with ballast water, and it becomes inhabited and prospered in the sea area that is not the original habitat sea area, and there is a problem that it causes damage to the environment.
Therefore, for ballast water in ships, it has been proposed to perform sterilization with electrodes, mechanical destruction of fine organisms, and kill with ozone, ultraviolet rays, or chemicals, but the amount of ballast water that requires treatment is large. This, combined with the large number of types of microorganisms mixed in the ballast water, makes it difficult to take appropriate measures, and there is concern about secondary damage caused by the use of a large amount of the drug.
JP 2005-271648 A JP 2005-342626 A JP 2006-212493 A JP 2006-248510 A

  The present invention provides a water supply system to a ballast tank of a ship by interposing a filtering device and a chemical killing device so that microorganisms in the ballast water can be sufficiently removed and sterilized, and a ballast water ship. When discharging to the outside, the filtration device can be reused to sufficiently remove chemicals and microorganisms remaining in the wastewater, and the processing of used filter media in the filtration device can be simplified. It is an object to provide a marine ballast water treatment apparatus.

In order to solve the aforementioned problems, a marine ballast water treatment apparatus according to the present invention includes a water intake section provided in a submerged portion of the ship and a strainer in the water intake section to inject ballast water into the ballast tank of the ship. And a water supply system connected to the ballast tank through the pump to the water supply / drainage valve, and in the water supply system, the water supply line connecting the pump and the water supply / drainage valve is connected to the water supply line. The ballast tank is provided with a filtration device for filtering and removing bacteria and fine organisms and solids in the feed water and a chemical application device for killing the remaining bacteria and fine organisms. When discharging the ballast water inside the vessel to the outside of the ship, the ballast water sucked by the pump through the pouring / drainage valve is led again to the filtration device and filtered, and then discharged out of the ship through the drainage valve. Are drainage systems that may put the provided as filter material in the filtering device, filter medium capable of adsorbing the residue of the drug given to the ballast water upon discharge of the ballast water by the agent application device is provided to be replaceable It is characterized by being.

The marine ballast water treatment apparatus of the present invention is characterized in that the filter medium is a flammable filter medium.

Further, ship ballast water treatment system of the present invention, the filtration device is characterized in that it comprises interchangeably multiple water flow type cartridges filled with the filter media.

  In addition, the marine ballast water treatment apparatus of the present invention is characterized in that the medicine application device is provided as a sodium hypochlorite generator.

  Further, the marine ballast water treatment apparatus according to the present invention is a connection between a ballast water injecting and discharging main pipe connected to the valve for pouring and draining in the ballast tank and a ballast water supply pipe extending from the medicine applying apparatus to the main pipe. And a ballast water discharge pipe for sending ballast water to the pump via the first switching valve when discharging the ballast water, and a water supply pipe from the strainer to the pump. Is provided with a second switching valve that can be selectively connected to the suction part of the pump.

  In the above-described ballast water treatment apparatus for a ship according to the present invention, when the ballast water is supplied to the ballast tank of the ship accompanying unloading from the ship at the port, the water is sucked by a pump from a water intake portion in the submerged part of the ship. The treated water is subjected to a treatment for removing bacteria and microorganisms and solids contained in the feed water with a filtration device, and a sterilizing action for the remaining bacteria and microorganisms in the drug application device. The purified water supply is supplied to the ballast tank.

  When the ship loads cargo at another port, when discharging ballast water from the ship's ballast tank, bacteria and microorganisms remaining in the ballast water grow in the ballast tank during navigation. Even if there is residual chemical in the ballast water, the ballast water is filtered again by reusing the filtration device, so that damage to the ecosystem in the water area in the harbor can be sufficiently reduced. The effect becomes.

Further, as the filter medium in the filtration apparatus, the filtration material Ru bovine adsorb the residue of the drug given to the ballast water by the drug application device is provided to be replaceable, the ballast water is the filtering device the when it is discharged overboard through, in addition to removal of the residual drug in the same ballast water is efficiently, Ru exchange the filter medium is easily performed during the degradation of the filter media.

Furthermore, when the filter medium is made flammable, the used filter medium can be easily treated by incineration.

  And when the said filtration apparatus is equipped with many water-flow-type cartridges filled with the filter medium so that replacement | exchange is possible, the replacement | exchange operation | work at the time of the deterioration of the said filter medium is remarkably simplified by replacement | exchange of the said cartridge. become.

  Furthermore, by providing the medicine application device as a sodium hypochlorite generator, the bacteria and microorganisms in the water supply in the water supply line can be properly killed.

  In addition, a first switching valve is provided at a connection portion between the ballast water injection / discharge main pipe connected to the pouring / draining valve in the ballast tank and the ballast water supply pipe leading from the medicine applying device to the main pipe, When discharging ballast water, one of a ballast water discharge pipe for sending ballast water to the pump via the first switching valve and a water supply pipe leading from the strainer to the pump is selectively sucked into the pump. When the ballast water is supplied to the ballast tank, the second switching valve that can be connected to the pump is provided so that the water supply pipe from the strainer to the pump is connected to the suction part of the pump. The bar for operating the second switching valve and feeding the water supplied through the filtration device and the medicine applying device to the ballast tank. By operating the first switching valve so as to connect the water supply pipe to the main pipe for injecting and discharging ballast water, the water supply to the ballast tank is accurately performed in a state where the water supply is made harmless. Will come to be.

  When discharging the ballast water from the ballast tank, the ballast water injection / discharge main pipe is communicated with the ballast water discharge pipe by the switching operation of the first switching valve, and the ballast water discharge pipe is connected to the second switching valve. When the ballast water discharged from the ballast tank is filtered again using the filtration device and is sufficiently purified in this way, the ballast water is discharged outside the ship. Will be done.

  FIG. 1 is an explanatory view schematically showing a marine ballast water treatment apparatus installed in a ship as an embodiment of the present invention, and FIG. 2 is a longitudinal sectional view showing another example of a filtration apparatus in the apparatus.

  As shown in FIG. 1, in order to inject ballast water into the ballast tank T of the ship S, the water intake part 1 as a sea chest provided inside the hull outer plate in the submerged part of the ship S is provided with a lattice. Outside water is configured to be taken in through the opening 1a.

  Then, the water in the water intake section 1 is sucked by the pump 4 through the strainer 2 that performs roughening, and sent from the pump 4 to the filter device 5 through the water supply pipe 4a to be purified as water supply to the ballast tank T. It is configured to be.

  In the filtering device 5, bacteria and fine organisms and solid matter in the water supply are filtered by a filter medium such as a fiber material. The remaining bacteria and micro-organisms are killed along with the appropriate chemical application by the sodium hypochlorite generator 7a provided with the residual chlorine meter 8.

  The purified water supplied in this way is configured to be injected into each ballast tank T via the first switching valve A, the main ballast water injection / discharge pipe 10 and the ballast tank internal drainage valve 11. ing.

Further, when the ballast water in the ballast tank T is discharged, the ballast water discharged through the ballast tank pouring / draining valve 11 by the operation of the pump 4 passes through the main ballast water injection / discharge main pipe 10 and the first switching valve A. As it passes, it flows into the pump 4 through the ballast water discharge pipe 12 and the second switching valve B, and is further filtered by flowing into the filter device 5 through the outlet pipe 4a of the pump 4. .
In addition, as a filter medium inside the filtration apparatus 5, it can adsorb | suck sodium hypochlorite as a chemical | medical agent which remains in the ballast water at the time of discharge | emission of ballast water, and is combustible (for example, fiber material containing activated carbon). Used to be replaceable.

  And the ballast water discharged | emitted from the discharge pipe 5a of the filtration apparatus 5 is discharged | emitted outside the ship through the drain valve 5e, but the water supply valve 6 is closed in that case.

  FIG. 2 shows a modified example of the filtration device 5, in which a large number of water-flowing cartridges 5A filled with a filter material that is flammable and capable of adsorbing drugs are partitioned by a multistage partition plate 5c. Each compartment is loaded. A communication hole 5d is formed in each partition plate 5c. At the time of replacement due to deterioration of the filter medium, the opening / closing lid 5b is opened and the cartridge 5A is replaced.

  In the ballast water treatment apparatus for a ship according to the above-described embodiment, when the ballast water is supplied to the ballast tank T of the ship S accompanying unloading from the ship S at the port, the water intake unit 1 in the submerged portion of the ship S is used. The feed water sucked by the pump 4 through the strainer 2 is subjected to a treatment for removing bacteria, microorganisms and solids contained in the feed water by the filtration device 5, and the residue by sodium hypochlorite in the medicine applying device 7. The bacteria and microorganisms are killed, and the water purified in this way is supplied to the ballast tank T.

  When the ship S loads cargo at another port, when discharging the ballast water from the ballast tank T of the ship S, bacteria and microorganisms remaining in the ballast water in the ballast tank T during navigation Even if it is proliferating or there is a residual drug in the ballast water, the ballast water is filtered again by reusing the filtration device 5, so that the damage to the ecosystem in the water area in the harbor is sufficiently reduced. The effect which becomes possible is acquired.

  Moreover, since the combustible filter medium which can adsorb | suck the chemical | medical agent provided with the chemical | medical agent provision apparatus 7 is provided so that replacement | exchange is possible as the filter medium in the filtration apparatus 5, the ballast which passes through the filtration apparatus 5 again at the time of discharge | emission of ballast water In addition to appropriately removing the chemical remaining in the water, the filter medium can be easily replaced when the filter medium is deteriorated, and the used filter medium can be easily processed by incineration.

  Then, as shown in FIG. 2, when the filtration device 5 is provided with a large number of water-passable cartridges 5 </ b> A filled with the filter medium in a replaceable manner, the replacement work when the filter medium is deteriorated is It will be greatly simplified by replacement.

  Furthermore, by providing the medicine applying device 7 as the sodium hypochlorite generating device 7a, the bacteria and microorganisms in the water supply in the water supply pipe can be killed accurately.

  In addition, a first switching valve A is provided at a connection portion between the ballast water injecting and discharging main pipe 10 connected to the pouring / draining valve 11 in the ballast tank T and the ballast water supply pipe 9 leading from the medicine applying device 7 to the main pipe 10. In addition, one of the ballast water discharge pipe 12 for sending the ballast water to the pump 4 via the first switching valve A and the water supply pipe 3 leading from the strainer 2 to the pump 4 when the ballast water is discharged is selectively used. The second switching valve B that can be connected to the suction portion of the pump 4 is provided, so that when the ballast water is supplied to the ballast tank T, the water supply pipe 3 from the strainer 2 to the pump 4 is connected to the pump 4. The ballast water supply pipe 9 for operating the second switching valve B so as to be connected to the suction portion of the water supply and for supplying the water supplied through the filtering device 5 and the medicine applying device 7 to the ballast tank T. By operating the first switching valve A so as to communicate with the ballast water injecting / discharging main pipe 10, the supply of water to the ballast tank T is accurately performed in a state in which the water supply is rendered harmless. .

  When discharging the ballast water from the ballast tank T, the ballast water injection / discharge main pipe 10 is connected to the ballast water discharge pipe 12 by the switching operation of the first switching valve A, and the ballast water discharge pipe 12 is switched to the second. By connecting to the pump 4 by switching operation of the valve B, the ballast water discharged from the ballast tank T is filtered again using the filtration device 5 and sufficiently purified in this way, and then the ballast water is out of the ship. To be discharged.

It is explanatory drawing which shows typically the ship ballast water treatment apparatus as one Example of this invention with which the ship was equipped. It is a longitudinal cross-sectional view which shows the other example of the filtration apparatus in the said apparatus.

DESCRIPTION OF SYMBOLS 1 Water intake part 1a Opening part with a grid | lattice 2 Strainer 3 Water supply pipe 4 Pump 5 Filtration apparatus 5A Cartridge 5a Drain pipe 5b Opening and closing cover 5c Partition plate 5d Communication hole 5e Drain valve 6 Water supply valve 7 Drug application apparatus 7a Sodium hypochlorite generator 8 Residual chlorine meter 9 Ballast water supply pipe
10 Main pipe for ballast water injection and discharge
11 Drainage valve
12 Ballast water discharge pipe A 1st switching valve B 2nd switching valve S Ship T Ballast tank

Claims (5)

In order to inject ballast water into the ship's ballast tank, a water intake section provided in the submerged part of the ship, and water supply connected to the water intake section via a strainer and a pump to reach the valve for pouring and draining the ballast tank A filtration system for filtering and removing bacteria and fine organisms and solids in the feed water in the feed water pipe to the feed water pipe connecting the pump and the drainage valve in the feed water system. An apparatus and a medicine application device for killing the remaining bacteria and fine organisms, and when discharging the ballast water inside the ballast tank out of the ship, drainage systems may be discharged overboard through the drain valve after filtration lead to the aspirated ballast water again to the filtration device by the pump is provided through, as a filter medium in the filtration apparatus, the upper Filter medium the residue of the drug given to the ballast water with an agent application device capable of adsorbing during discharge of the ballast water, characterized in that is provided to be replaceable, ship ballast water treatment system. The marine ballast water treatment device according to claim 1, wherein the filter medium is a flammable filter medium .   The marine ballast water treatment device according to claim 1 or 2, wherein the filtration device is provided with a plurality of water flow type cartridges filled with a filter medium in a replaceable manner.   The marine ballast water treatment device according to any one of claims 1 to 3, wherein the medicine application device is provided as a sodium hypochlorite generator.   In the ballast tank, a first switching valve is provided at a connecting portion between the ballast water injecting / discharging main pipe connected to the pouring / draining valve and the ballast water supply pipe leading from the medicine applying device to the main pipe, and the ballast water During discharge, one of a ballast water discharge pipe for sending ballast water to the pump via the first switching valve and a water supply pipe leading from the strainer to the pump is selectively supplied to the suction portion of the pump. The marine ballast water treatment device according to any one of claims 1 to 4, wherein a second switching valve that can be connected is provided.

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