JP2004025040A - Purification device and purified water supply system - Google Patents

Abstract

Ballast water for a crude oil tanker, a natural gas carrier, an ore carrier, or the like injects seawater or freshwater from the unloaded area into a ship. The ship moves to the next port to reload the cargo and discharges the ballast water on board the port of call for loading. However, oil in the ballast water and pollutants such as bacteria and plankton in the loaded ballast water are released to the port of call, and are physically contaminated with oil and abnormally propagated by different types of bacteria and plankton. Red tides occur and shellfish toxic plankton multiplies, causing an international problem that fisheries and shellfish cultivation can cause fishery damage.
The object of the present invention is to provide a purified water supply system provided with a purification device in a water area at a port of call for unloading, a coastal water area, or a water area along a sea route after a port call or a coastal water area, and the purified water after unloading is provided. Supply to ships as ballast water. Further, the purified water supply system is provided in a ballast water discharge water area.
[Selection diagram] Fig. 1

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a purification device and a purified water supply system.
[0002]
[Prior art]
After unloading crude oil tankers, natural gas carriers, ore carriers, etc., the ships become lighter and lose their balance. Therefore, seawater or freshwater (hereinafter, referred to as ballast water) in the unloaded water area is injected into the emptied ship to return to the loaded state of cargo and return to port. The injected ballast water is discharged to the sea just before loading the next cargo at the next port or return port.
[0003]
However, the released ballast water contains oil and contaminants such as bacteria and plankton in the loaded ballast water, and when these contaminants are released to the port of call, they are physically contaminated with oil. It may cause international problems such as the occurrence of red tide due to abnormal growth of heterogeneous bacteria and plankton, and the growth of shellfish toxic plankton, resulting in fishery damage to fish and shellfish farming. There is.
[0004]
In order to avoid this, plankton is provided with a relatively small amount of plankton when a dedicated purification device for ballast water is installed in the ship to remove pollutants in the ballast water in the ship, or when the ballast water in the ship is marined at a depth of 2000m or more. In some cases, the ballast water on board the ship is exchanged for the Shanghai water.
[0005]
Further, in a water area where ballast water not subjected to the purification processing is discharged on board, there is a purification processing method for removing pollutants brought in with water diluted with the water in the water area.
[0006]
It should be noted that Japanese Patent Application Laid-Open No. 2001-293474 is an example of this type of conventional technology.
[0007]
[Problems to be solved by the invention]
In the above-mentioned conventional processing method for purifying onboard a ship, the purifying apparatus is expensive, and there is a problem in that a labor burden such as cleaning work and equipment maintenance is required for a seafarer to operate.
[0008]
In addition, since the purification operation is performed using the electric power in the ship, it is necessary to increase the power supply equipment in the ship in some cases, and further, there is a problem that the installation cost of the purification device increases.
[0009]
On the other hand, in the conventional treatment method, the ballast water in the ship is exchanged on the sea at a depth of 2,000 m or more, and the ballast water on the ship is exchanged with the marine water with less plankton. If there is no corresponding sea area in the middle of the route, the cost of moving to that sea area is required, the number of sailing days increases, and the efficiency of commercial navigation decreases.
[0010]
In addition, the above method of replacing ballast water on board a ship cannot be carried out because it is dangerous unless the weather is calm during navigation, and the method of normal replacement is to add Western Shanghai water to ballast water on board ship. In general, a method of diluting and purifying ballast water while injecting and overflowing is used, and there is a problem that the original pollutant can be purified only to a concentration of about 20% to 30%.
[0011]
On the other hand, in water bodies where ballast water is not discharged on board, discharge treatment is carried out to remove contaminants brought in with water diluted with water in the water area to prevent damage to the fishing industry. Although there is a method, it is necessary to purify a large amount of water diluted in the water area by discharging water, and there is a problem that a large purification cost is generated.
[0012]
Further, when soft water must be used as ballast water, since there is no water area having a water depth of more than 2000 m, only the method of purifying onboard the conventional processing method described above can be adopted, and the purifying apparatus is expensive. In addition, there is a problem in that the operation requires a labor burden such as purification work and equipment maintenance for the seafarers. In addition, since the purification operation is performed using the electric power in the ship, it is necessary to increase the power supply equipment in the ship in some cases, and further, there is a problem that the installation cost of the purification device increases.
[0013]
An object of the present invention is to provide a purification device and a purified water supply system that are less likely to be marine-polluted by pollutants such as oil and plankton.
[0014]
[Means for Solving the Problems]
The object is to purify water in the water area where ballast water is injected into a ship after unloading, purifying means for purifying water in the water area, purifying water storing means for storing water purified by the purifying means, and purifying the purified water storing means. This is achieved by having a supply means for supplying water to a ship or the like.
[0015]
The object is to provide a ballast water storing means for separating and storing the discharged ballast water from the water area in a water area discharging ballast water to a ship after unloading, and a purifying means for purifying ballast water in the ballast water storing means. And discharge means for discharging the purified ballast water purified by the purification means to the water area.
[0016]
Further, the object is to provide a purifying means for purifying water in the water area in a water area into which ballast water is injected into a ship after unloading, a purified water storing means for storing water purified by the purifying means, and a purified water storing means. This is achieved by providing supply means for supplying purified water to a ship or the like, and supplying the purified water quality analysis data and the purified water for a fee.
[0017]
Further, the above object is to provide a purifying means for purifying soft water, a purified water storing means for storing the soft water purified by the purifying means, and a purified water stored in the purified water storing means in a water area into which ballast water is injected into a ship after unloading. This is achieved by having a supply means for supplying water to a ship or the like.
[0018]
Further, the above object is to provide a ballast water storing means for storing the discharged ballast water separately from the water area in a water area for discharging the soft ballast water to the ship after unloading, and a ballast water in the ballast water storing means. This is achieved by having a purifying means for purifying and a soft water supply means for supplying the purified ballast water purified by the purifying means as purified soft water.
[0019]
Further, the object is to provide a purifying means for purifying water in the water area in a water area into which ballast water is injected into a ship after unloading, a purified water storing means for storing water purified by the purifying means, and a purified water storing means. Supply means for supplying purified water to a ship or the like, distributing the purified water quality analysis data and the purified water amount data over the Internet, and performing water quality management in a water area where the ship calls at the port. This is achieved by receiving water quality analysis data and data on the amount of purified water.
[0020]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to FIG.
In FIG. 1, a purified water supply system 3 having a purification device 2 serving as a purification means is disposed in a water area 1 where plankton and harmful microorganisms are present. The purified water supply system 3 includes a pipe 4 for introducing raw water in a water area, a purification device 2 for purifying the raw water and reducing a volume of sludge generated by the purification processing, and a pipe 6 for discharging purified water 5. A water tank 7 for holding the purified water 5, a pipe 8 for supplying the treated water 5 in the water tank 7 to the outside of the water tank 7, a pump 9, and a pipe 10 are provided.
[0021]
The treated water 5 is supplied as a ballast water, for example, by a pump 9 through a pipe 10 and supplied to a ship 11 anchored in the water area 1 through the pipe 10 for a fee, for example. As a purification method of the purification device 2 serving as a purification means, a coagulation precipitation method, a combination of an ultraviolet sterilization method and a precipitation method, a combination of an ultrasonic sterilization method and a precipitation method, a combination of a sterilization method and a precipitation method by hydraulic injection, A physical and biological purification system such as a coagulation flotation system using pressure levitation, a string-shaped biofilm treatment system, or a coagulation separation system combining magnetic separation is applied.
[0022]
According to the purification device and the purified water supply system of FIG. 1, the oil content in the water present in the raw water in the water area 1 and the contaminants such as bacteria and plankton are passed through the purification device 2 to make the raw water. Is removed at a high removal rate of 90% or more and purified, and the purified water 5 is stored in the water tank 7 and is used as ballast water by the ship 11.
It is also possible to provide the results of the water quality analysis of the purified water 5 by a document from the company that has performed the purification processing, and to distribute the water analysis data of the purified water and the data of the amount of the purified water on the Internet. In this case, the person in charge of water quality management in the water area where the vessel calls at the port can receive the water quality analysis data and the data of the amount of purified water, and can judge permission of ballast water discharge before the vessel calls at the ballast. Water discharge work can be performed more smoothly.
[0023]
As a result, the port water area manager can easily confirm the quality of the ballast water in the ship calling at the port based on the document or the Internet information, so that the confirmation work of permitting the ship to enter the port is easy. Purified ballast water is released in the water area, so it is contaminated with oil as usual, bacteria and plankton grow abnormally to generate red tide, and shellfish toxic plankton grows, Damage to fish and shellfish farming in the water area can be reduced.
[0024]
Since there is no need to install a purification device dedicated to ballast water in the ship, there is no need to install additional power supply equipment or to perform purification, so that the labor of seafarers is not increased.
[0025]
As described above, since purified ballast water is injected into the ship, there is no need to exchange ballast water with seawater at a depth of 2000 m or more, and there is no need to travel in that sea area. There will be no increase, and the efficiency of commercial navigation will increase.
[0026]
According to the present embodiment, high-quality ballast water can be injected into a ship during unloading, so that ballast water quality is improved as compared with a method of purifying ballast water in a ship by replacing existing ballast water. Damage to fish and shellfish cultivation in ballast water discharge water areas can be suppressed.
[0027]
On the other hand, since there is no need for the work of ballast water exchange work inside the ship, the work of ballast water purification work by seafarers is eliminated, and the work of seafarers is reduced.
[0028]
In the case where soft water must be used as ballast water, since there is no water area having a water depth of more than 2000 m, only the method of purifying onboard the above-described conventional treatment method can be adopted. By injecting water into the ship, purification equipment is not required, and crew members do not have to pay labor for purification work and equipment maintenance, and they do not use power onboard for purification operation. There is no need for additional installation, and there is no need to install a purification device, there is no labor burden on seafarers, and there is an effect that there is no need for additional cost for power supply equipment.
[0029]
It should be noted that for the ship 12 that cannot be loaded with the purified ballast water and that carries the polluted ballast water, the purification apparatus and the purified water supply system shown in FIG. It is possible to respond.
[0030]
In FIG. 2, ballast water 13 on the ship is taken out from a pipe 10 into a water tank 7 via a pump 9, held there, pumped from a pipe 6 to a purification device 2 and purified, and the purified water is passed through a pipe 4 to a water area 1. Release.
By purifying the polluted ballast water and releasing it into the water area, the oil contained in the ballast water as polluted water may contaminate the ballast water discharge area, or bacteria and plankton may grow abnormally and cause red tide. It is possible to suppress the damage to fish and shellfish cultivation in the water area due to the occurrence of sea bream and the proliferation of shellfish toxic plankton. Further, in this embodiment, since the purification processing can be performed without diluting the ballast water in the ship, the pollutants in the ballast water can be removed at a low purification cost.
[0031]
On the other hand, when the water area is the sea, if the purifying apparatus and the purified water supply system shown in FIG. 2 for supplying the purified seawater ballast water cannot be installed, it is shown in FIG. 3 as another embodiment according to the present invention. It is possible to respond by means.
[0032]
In FIG. 3, soft water from a river or sewage treatment water near the water area is supplied into a water tank 7 of a purified water supply system by a pipe 14, and the purified water is roughly purified by a purification device 2 to separate large trash and the like. Water is stored in a water tank 7 through 6. The purified soft water is supplied as ballast water to a ship 19 that is pressurized by a pump 16 and berths in the water area 1 through pipes 17 and 18, for example, for a fee. The port-of-call water area manager can confirm that the quality of the ballast water in the ship that called at the port is soft water based on the above-mentioned documents, so that it is easy to perform a check operation of permitting the ship to enter the port and the ballast water is released in the water area. In some cases, all bacteria and plankton that lived in soft water will die in seawater, causing abnormal breeding and red tide generation, and toxic plankton multiplying by fish and shellfish in the water area. It is possible to suppress damage to aquaculture and the like.
[0033]
When the water area is the sea where soft water is a precious water resource like the Middle East area, another embodiment according to the present invention can be dealt with by the means shown in FIG.
[0034]
In FIG. 4, ballast water 15 of the soft water of the ship 19 is taken out of the ballast water 15 from the pipe 10 into the water tank 7 via the pump 9, held there, pumped from the pipe 6 to the purification device 2, and purified. Water can be sent through the pipe 21 as soft water for horticultural and agricultural use on land, or as drinking water.
In this way, the polluted soft water ballast water can be purified and reused as horticultural or agricultural water for the water area, or furthermore highly treated as drinking water. Therefore, bacteria and plankton abnormally propagate in the water area where the ship calls, causing red tide, and shellfish-toxic plankton multiplying, which has the effect of eliminating damage such as cultivation of fish and shellfish in the water area. .
[0035]
According to the present embodiment, the case where the purification device and the purified water supply system are arranged in the water area has been described. However, the same effect can be obtained even when the purification device and the purified water supply system are entirely or partially on land. is there.
[0036]
As described above, since the purified ballast water is injected into the ship and the ballast water is discharged, it is possible to prevent pollution including high-concentration pollutants in the water area due to ballast water discharge in the ballast water discharge water area. In addition, by retaining the unpurified ballast water in the purified water supply system, purifying it with the purification device, and releasing the purified water into the water area, it is possible to prevent pollution caused by ballast water release in the ballast water discharge water area.
[0037]
Further, according to the present embodiment, in the port of call, a purified water supply system having a water tank storing purified water of seawater or soft water previously purified by the purification device is provided, and water quality analysis is performed using pre-purified water as ballast water. It can be supplied to the ship along with documents indicating the inspection. Thereby, the port-of-call water area manager can check the quality of ballast water in the ship calling at the port by the above-mentioned documents, so that it is easy to perform a check operation of permitting the ship to enter the port, and the ballast water is released in the water area. It is not contaminated with oil, and bacteria and plankton abnormally reproduce to generate red tide, and shellfish-toxic plankton proliferates, so that there is no damage to fish and shellfish culture in the water area.
[0038]
Further, since there is no need to install a purification device dedicated to ballast water in the ship, there is no need to install an additional power supply facility, and there is no work for purification, so that the effect of not increasing the labor of seafarers is produced.
[0039]
Further, for the ship 12 loaded with the polluted ballast water, in a water area having a purification device and a purified water supply system, the ballast water on the ship is taken out of the system, held, and purified by the purification device. Since it can be discharged into water bodies, the oil contained in the ballast water as polluted water will contaminate the discharge area of ballast water, abnormal breeding of bacteria and plankton will generate red tide, and shellfish toxic plankton will proliferate. Thus, there is an effect that no damage occurs to the fish and shellfish cultivation in the water area. Further, since the purification process can be performed without diluting the ballast water in the ship, there is an effect that pollutants in the ballast water can be removed at a low purification cost.
[0040]
If the water area is the sea, the soft water of rivers and sewage treatment water can be stored in the tank of the purified water supply system and supplied to ships as ballast water along with water quality inspection documents as soft water. According to the above documents, it was confirmed that the quality of ballast water in the ship that called at the port was soft water, and even if the ballast water was released in the water area, bacteria and plankton that lived in the soft water were all in seawater. Because of the death, abnormal breeding and red tide are generated, and toxic plankton is proliferated, so that there is an effect that damage to fish and shellfish cultivation in the water area does not occur.
[0041]
When the water area is the sea where soft water is a valuable water resource, such as in the Middle East, the ballast water in the soft water is stored in a water tank in a purified water supply system having a purification device, and then purified by the purification device. The purified water can be supplied as terrestrial horticulture, agricultural soft water, or drinking water.
[0042]
In this way, the polluted soft water ballast water has an effect of being purified and reused as horticultural and agricultural water for the water area, or further highly treated as drinking water. Therefore, bacteria and plankton abnormally propagate in the water area where the ship calls, causing red tide, and shellfish-toxic plankton multiplying, which has the effect of eliminating damage such as cultivation of fish and shellfish in the water area. .
[0043]
Note that the same effect is obtained even if the purifying apparatus and the purified water supply system have a structure in which the whole or a part moves on the sea.
[0044]
【The invention's effect】
ADVANTAGE OF THE INVENTION According to this invention, the purification apparatus and purified water supply system which can suppress the contamination by the pollutants, such as oil and plankton, in the ballast water discharge water area of a discharge destination can be provided.
[Brief description of the drawings]
FIG. 1 is a flowchart of a purification apparatus and a purified water supply system according to one embodiment of the present invention.
FIG. 2 is a flowchart of a purification device and a purified water supply system according to another embodiment of the present invention.
FIG. 3 is a flowchart of a purification device and a purified water supply system according to another embodiment of the present invention.
FIG. 4 is a flowchart of a purification device and a purified water supply system according to another embodiment of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Water area, 2 ... Purification apparatus, 3 ... Purified water supply system, 4 ... Piping, 5 ... Purified water, 6 ... Piping, 7 ... Water tank, 8 ... Piping, 9 ... Pump, 10 ... Piping, 11 ... Ship.

Claims (6)

In a water area where ballast water is injected into a ship after unloading, a purifying means for purifying water in the water area, a purified water storing means for storing water purified by the purifying means, and a purified water stored in the purified water storing means for a ship or the like. A purification device and a purified water supply system, characterized by having a supply means for supplying the purified water. A ballast water storage means for storing the discharged ballast water separately from the water area in a water area for discharging ballast water to a ship after unloading; a purifying means for purifying ballast water in the ballast water storage means; A purifying apparatus and a purified water supply system, further comprising a discharging means for discharging purified ballast water purified by the means into the water area. In a water area where ballast water is injected into a ship after unloading, a purifying means for purifying water in the water area, a purified water storing means for storing water purified by the purifying means, and a purified water stored in the purified water storing means for a ship or the like. A purification unit and a purified water supply system, wherein the purified water is supplied for a fee, and the purified water is supplied for a fee. Purifying means for purifying soft water, purified water storing means for storing the soft water purified by the purifying means, and supplying purified water from the purified water storing means to a ship or the like in a water area into which ballast water is injected into the ship after unloading. A purifying apparatus and a purified water supply system, comprising a supply unit. In a water area that discharges soft ballast water to a ship after unloading, ballast water storage means for storing the discharged ballast water separately from the water area, a purifying means for purifying ballast water in the ballast water storage means, A purifying apparatus and a purified water supply system, further comprising soft water supplying means for supplying purified ballast water purified by the purifying means as purified soft water. In a water area where ballast water is injected into a ship after unloading, a purifying means for purifying water in the water area, a purified water storing means for storing water purified by the purifying means, and a purified water stored in the purified water storing means for a ship or the like. Supply means for supplying the purified water quality analysis data and the purified water quantity data via the Internet. A purification device and a purified water supply system, which can receive data on the amount of water.

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