CN110902896A - Ballast water marine organism prevention treatment system and control method thereof - Google Patents
Ballast water marine organism prevention treatment system and control method thereof Download PDFInfo
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- CN110902896A CN110902896A CN201911120821.8A CN201911120821A CN110902896A CN 110902896 A CN110902896 A CN 110902896A CN 201911120821 A CN201911120821 A CN 201911120821A CN 110902896 A CN110902896 A CN 110902896A
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
- C02F1/46104—Devices therefor; Their operating or servicing
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
- C02F1/467—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrochemical disinfection; by electrooxydation or by electroreduction
- C02F1/4672—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrochemical disinfection; by electrooxydation or by electroreduction by electrooxydation
- C02F1/4674—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrochemical disinfection; by electrooxydation or by electroreduction by electrooxydation with halogen or compound of halogens, e.g. chlorine, bromine
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/008—Originating from marine vessels, ships and boats, e.g. bilge water or ballast water
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/04—Disinfection
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- General Chemical & Material Sciences (AREA)
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Abstract
The invention discloses a ballast water marine organism prevention treatment system and a control method thereof, wherein the system comprises a subsea door, a ballast water treatment device and a ballast water tank, the subsea door is connected with a water inlet of a water inlet pipeline, the water inlet pipeline is respectively connected with a first water pipe and a second water pipe, the first water pipe is connected with the water inlet end of the ballast water treatment device, the water outlet end of the ballast water treatment device is respectively connected with a third water pipe and a water outlet pipeline through a water main pipe, the third water pipe is connected with the first water inlet end of the ballast water tank, and the water outlet pipeline is connected with the subsea door; the second water pipe is connected with the second water inlet end of the ballast water tank. According to the invention, only the ballast water treatment device is arranged on the ship, the marine organisms in the ballast water tank, the seabed door and the seawater main pipe can be treated, and the generation amount of sodium hypochlorite of the ballast water treatment device is far larger than that of the marine organism prevention device, so that the treatment efficiency of the marine organisms in the ballast water tank, the seabed door and the seawater main pipe is improved.
Description
Technical Field
The invention relates to the technical field of ship construction, in particular to a ballast water marine organism prevention treatment system and a control method thereof.
Background
When the ship is unloaded, ballast water is added into the ballast tank in order to keep the ship at a certain draft without overturning. When the ballast tank is pressurized to contain a large amount of organisms, including plankton, microorganisms, bacteria, even small fishes, and eggs, larvae or spores of various species, the organisms are added into the ballast tank along with seawater, and some organisms die due to the fact that the organisms cannot adapt to the change of temperature, salinity and the like during the sailing process of the ship, but some organisms can survive. The ballast water in the ballast tanks is discharged to the destination sea area until the voyage is finished.
In order to avoid that foreign marine organisms in the ballast water cause damage to the marine ecological environment of the destination, marine organism prevention devices are currently installed on ships to kill marine organisms in the ballast water. However, after the IMO ballast water convention takes effect, the ballast water treatment device must be installed on a large-scale ocean-going ship to meet the new environmental protection requirement, so that the ship is overlapped with the marine organism prevention device of the original cooling water system on the ship in function, the shipbuilding cost is greatly increased, the installation and debugging workload is also greatly increased, and the maintenance cost of the ship in the later period is also correspondingly increased.
Disclosure of Invention
In view of the above, the invention provides a ballast water marine organism prevention treatment system and a control method thereof, the system can treat marine organisms in a ballast water tank, a subsea door and a seawater main pipe only by installing a ballast water treatment device on a ship, and sodium hypochlorite generated by the ballast water treatment device is far greater than that generated by the marine organism prevention device, so that the treatment efficiency of the marine organisms in the ballast water tank, the subsea door and the seawater main pipe is greatly improved.
A ballast water marine organism prevention treatment system, which comprises a sea chest, a ballast water treatment device and a ballast water tank,
the seabed door is connected with a water inlet of a water inlet pipeline, a water outlet of the water inlet pipeline is respectively connected with a first water delivery pipe and a second water delivery pipe,
the water outlet of the first water pipe is connected to the water inlet end of the ballast water treatment device, the water outlet end of the ballast water treatment device is respectively connected with a third water pipe and a water outlet pipeline through a water main pipe, the third water pipe is connected to the first water inlet end of the ballast water tank, and the water outlet pipeline is connected with the sea chest;
and the water outlet of the second water conveying pipe is connected with the second water inlet end of the ballast water tank.
Preferably, the subsea door comprises a first subsea door and a second subsea door, the first subsea door and the second subsea door are respectively connected to the water inlet of the water inlet pipeline, and the first subsea door and the second subsea door are respectively connected to the water outlet of the water outlet pipeline.
Preferably, the ballast water treatment device comprises a filter, an electrolytic tank and a dehydrogenation unit, wherein the water inlet end of the filter is connected with a water inlet pipeline, the water outlet end of the filter is respectively connected with a filtering main pipe and a filtering branch pipe, the filtering branch pipe is connected with the electrolytic tank, the electrolytic tank is connected with the dehydrogenation unit, a pipeline of the water outlet of the dehydrogenation unit is merged into the filtering main pipe, and the water outlet of the filtering main pipe is connected with a water delivery main pipe.
Preferably, the water inlet pipeline comprises a main water inlet pipe, a first water inlet branch pipe connected between the main water inlet pipe and the first subsea door, and a second water inlet branch pipe connected between the main water inlet pipe and the second subsea door, wherein a ballast water pump is installed on the main water inlet pipe and is electrically connected with the ship control system.
Preferably, the water outlet pipeline comprises a main water outlet pipe connected with the main water delivery pipe, a first branch water outlet pipe connected between the main water outlet pipe and the first subsea door, and a second branch water outlet pipe connected between the main water outlet pipe and the second subsea door, wherein a second control valve is mounted on the main water outlet pipe and electrically connected with the ship control system.
Preferably, a first control valve is installed on the third water conveying pipe, and the first control valve is electrically connected with the ship control system.
A control method of a ballast water marine organism prevention treatment system specifically comprises the following steps:
s1, the seawater sucked by the sea chest enters a water inlet pipeline, and after passing through a ballast water pump, the seawater respectively enters a ballast water treatment device and a ballast water tank through a first water conveying pipe and a second water conveying pipe;
s2, electrolyzing the seawater into electrolyzed seawater containing a sodium hypochlorite solution with a specific concentration by the ballast water treatment device, wherein the electrolyzed seawater enters a third water conveying pipe and a main water outlet pipe through a water conveying main pipe, enters a ballast water cabin through the third water conveying pipe, enters a seabed door through the main water outlet pipe, is ionized in the seawater to generate hypochlorite and sodium ions, the hypochlorite is hydrolyzed to generate hypochlorous acid, and the hypochlorous acid penetrates into cells through cell walls to destroy enzyme systems of the cells, so that marine organisms in the ballast water cabin and the seabed door are killed.
The invention has the beneficial effects that:
according to the invention, only the ballast water treatment device is arranged on the ship, the marine organisms in the ballast water tank, the seabed door and the seawater main pipe can be treated, and the generation amount of sodium hypochlorite of the ballast water treatment device is far larger than that of the marine organism prevention device, so that the treatment efficiency of the marine organisms in the ballast water tank, the seabed door and the seawater main pipe is greatly improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic diagram of the principle of the present invention.
Fig. 2 is a schematic view of a ballast water treatment apparatus.
The reference numerals in the figures have the meaning:
1 is a ballast water treatment device, 11 is a main filtering pipe, and 12 is a branch filtering pipe;
2 is a ballast water tank;
3 is a ballast water pump;
4 is a first seabed door, 41 is a first water inlet branch pipe, and 42 is a first water outlet branch pipe;
a second seabed door 5, a second water inlet branch pipe 51 and a second water outlet branch pipe 52 are respectively arranged;
6 is a main water inlet pipe, 61 is a second water conveying pipe, and 62 is a first water conveying pipe;
7 is a water delivery main pipe, 71 is a third water delivery pipe, and 72 is a water outlet main pipe;
8 is a second control valve;
9 is a first control valve.
Detailed Description
For better understanding of the technical solutions of the present invention, the following detailed descriptions of the embodiments of the present invention are provided with reference to the accompanying drawings.
It should be understood that the described embodiments are only some embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The present application is described in further detail below with reference to specific embodiments and with reference to the attached drawings.
In the description of the present application, the terms "first" and "second" are used for descriptive purposes only and are not intended to indicate or imply relative importance unless explicitly stated or limited otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
The invention provides a ballast water marine organism prevention treatment system which comprises a sea chest, a ballast water treatment device 1 and a ballast water tank 2.
The subsea door comprises a first subsea door 4 and a second subsea door 5, and the first subsea door 4 and the second subsea door 5 are respectively connected with the water inlet of the water inlet pipeline. The water inlet pipeline comprises a main water inlet pipe 6, a first branch water inlet pipe 41 connected between the main water inlet pipe 6 and the first subsea door 4, and a second branch water inlet pipe 51 connected between the main water inlet pipe 6 and the second subsea door 5. The ballast water pump 3 is installed on the water inlet main pipe 6, and the ballast water pump 3 is electrically connected with the ship control system. The water outlet of the water inlet main pipe 6 is respectively connected with the first water conveying pipe 62 and the second water conveying pipe 61.
The water outlet of the first water pipe 62 is connected to the water inlet end of the ballast water treatment device 1.
The ballast water treatment apparatus 1 is used for electrolyzing seawater to generate a sodium hypochlorite solution. The water outlet end of the ballast water treatment device 1 is respectively connected with the third water pipe 71 and the water outlet pipeline through the water main pipe 7. The third water pipe 71 is connected to a first water inlet end of the ballast water tank 2, a first control valve 9 is mounted on the third water pipe 71, and the first control valve 9 is electrically connected with the ship control system. And the water outlet of the water outlet pipeline is respectively connected with the first seabed door 4 and the second seabed door 5.
The water outlet pipeline comprises a main water outlet pipe 72 connected with the water delivery main pipe 7, a first branch water outlet pipe 42 connected between the main water outlet pipe 72 and the first subsea door 4, and a second branch water outlet pipe 52 connected between the main water outlet pipe 72 and the second subsea door 5. And a second control valve 8 is arranged on the water outlet main pipe 72, and the second control valve 8 is electrically connected with a ship control system.
The water outlet of the second water pipe 61 is connected to the second water inlet end of the ballast water tank 2.
The ballast water treatment device 1 comprises a filter, an electrolytic tank and a dehydrogenation unit, wherein the water inlet end of the filter is connected with a water inlet pipeline, the water outlet end of the filter is respectively connected with a filtering main pipe 11 and a filtering branch pipe 12, the filtering branch pipe 12 is connected with the electrolytic tank, the electrolytic tank is connected with the dehydrogenation unit, a pipeline of a water outlet of the dehydrogenation unit is merged into the filtering main pipe 11, and the water outlet of the filtering main pipe 11 is connected with a water delivery main pipe 7. The water outlet of the main filtering pipe 11 is the water outlet of the ballast water treatment device 1.
The filter in the ballast water treatment apparatus 1 filters out plankton having a diameter of more than 50 μm from the seawater, and the filtered seawater flows out from the outlet of the filter. One part of the filtered seawater directly enters the main filtering pipe 11, the other part of the filtered seawater (seawater in the branch filtering pipe 12) with small flow rate separated from the main filtering pipe 11 enters the electrolytic cell, chloride ions in the part of seawater are oxidized on an anode plate of the electrolytic cell, oxides are dissolved in the seawater to generate a sodium hypochlorite solution with high concentration, after hydrogen generated by the hydrogen removing unit is discharged, the sodium hypochlorite solution is injected into the main filtering pipe 11 again, and is mixed with the filtered seawater in the main filtering pipe 11 to be diluted to a specific concentration, so that the electrolyzed seawater containing the sodium hypochlorite solution with the specific concentration is generated. The electrolyzed seawater with the concentration can effectively kill plankton, pathogen, larva or spore thereof and the like remained in the filtered seawater, thereby achieving the specified sterilization effect. The electrolyzed seawater output from the ballast water treatment apparatus 1 is transported to the main water outlet pipe and the third water transport pipe 71 through the main water transport pipe 7, transported to the sea chest through the main water outlet pipe, and transported to the ballast water tank through the third water transport pipe 71.
In order to control the concentration of the sodium hypochlorite solution in the electrolyzed seawater output by the ballast water treatment device 1, a TRO sensor can be installed on the water delivery main pipe 7 and used for detecting the concentration of the sodium hypochlorite solution in the water delivery main pipe 7, and when the concentration is greater than or less than a specified value, a corresponding control signal is sent to the ballast water treatment device 1 through a ship control system, so that the concentration of the sodium hypochlorite solution in the electrolyzed seawater output by the ballast water treatment device 1 is adjusted.
The control method of the ballast water marine organism prevention treatment system comprises the following steps:
s1, the seawater sucked by the sea chest enters a water inlet pipeline, and after passing through a ballast water pump 3, the seawater respectively enters a ballast water treatment device and a ballast water tank through a first water conveying pipe 62 and a second water conveying pipe 61;
s2, the ballast water treatment device 1 electrolyzes seawater to generate electrolyzed seawater containing sodium hypochlorite solution with specific concentration, the electrolyzed seawater enters the third water pipe 71 and the main water outlet pipe 72 through the main water pipe 7, enters the ballast water tank 2 through the third water pipe 71, and the electrolyzed seawater in the main water outlet pipe 72 enters the first subsea door 4 and the second subsea door 5 through the first branch water outlet pipe 42 and the second branch water outlet pipe 52, respectively. Because the ballast water tank 2, the first subsea door 4 and the second subsea door 5 contain seawater, the high-concentration sodium hypochlorite solution is diluted after the high-concentration sodium hypochlorite solution is injected. Sodium hypochlorite is ionized in seawater to generate hypochlorite and sodium ions, hypochlorite is hydrolyzed to generate hypochlorous acid, and the hypochlorous acid penetrates into cells through cell walls to destroy enzyme systems of the cells, so that marine organisms in a ballast water tank and a submarine gate are killed.
The process of generating sodium hypochlorite solution by electrolyzing seawater in the ballast water treatment device 1 comprises the following steps: sodium chloride in seawater reacts with water under electrolysis conditions to generate sodium hypochlorite, and the reaction formula is as follows: NaCl + H2O+2e→NaClO+H2. Sodium hypochlorite is ionized in water to generate hypochlorite and sodium ions, and the reaction formula is as follows:
the hypochlorite is hydrolyzed to generate hypochlorous acid,
the above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (7)
1. A ballast water marine organism prevention treatment system is characterized by comprising a sea chest, a ballast water treatment device (1) and a ballast water tank (2),
the seabed door is connected with a water inlet of a water inlet pipeline, a water outlet of the water inlet pipeline is respectively connected with a first water pipe (62) and a second water pipe (61),
the water outlet of the first water pipe (62) is connected to the water inlet end of the ballast water treatment device (1), the water outlet end of the ballast water treatment device (1) is respectively connected with a third water pipe (71) and a water outlet pipeline through a water main pipe (7), the third water pipe (71) is connected to the first water inlet end of the ballast water tank (2), and the water outlet pipeline is connected with a sea chest;
and the water outlet of the second water pipe (61) is connected with the second water inlet end of the ballast water tank (2).
2. The ballast water marine organism treatment preventing system according to claim 1, wherein the sub-sea doors comprise a first sub-sea door (4) and a second sub-sea door (5), the first sub-sea door (4) and the second sub-sea door (5) are respectively connected with a water inlet of the water inlet pipeline, and the first sub-sea door (4) and the second sub-sea door (5) are respectively connected with a water outlet of the water outlet pipeline.
3. The ballast water marine organism prevention treatment system according to claim 1, wherein the ballast water treatment device (1) comprises a filter, an electrolytic tank and a hydrogen removal unit, wherein a water inlet end of the filter is connected with a water inlet pipeline, a water outlet end of the filter is respectively connected with a main filtering pipe and a branch filtering pipe, the branch filtering pipe is connected with the electrolytic tank, the electrolytic tank is connected with the hydrogen removal unit, a pipeline of a water outlet of the hydrogen removal unit is merged into the main filtering pipe, and a water outlet of the main filtering pipe is connected with a water delivery main pipe.
4. The ballast water marine organism prevention treatment system according to claim 1, 2 or 3, wherein the water inlet pipeline comprises a main water inlet pipe (6), a first branch water inlet pipe (41) connected between the main water inlet pipe (6) and the first subsea door (4), and a second branch water inlet pipe (51) connected between the main water inlet pipe (6) and the second subsea door (5), the main water inlet pipe (6) is provided with a ballast water pump (3), and the ballast water pump (3) is electrically connected with a ship control system.
5. The ballast water marine organism prevention treatment system according to claim 1 or 2, wherein the water outlet pipeline comprises a main water outlet pipe (72) connected to the water delivery main pipe (7), a first branch water outlet pipe (42) connected between the main water outlet pipe (72) and the first subsea door (4), and a second branch water outlet pipe (52) connected between the main water outlet pipe (72) and the second subsea door (5), wherein the main water outlet pipe (72) is provided with a second control valve (8), and the second control valve (8) is electrically connected to the ship control system.
6. The system for preventing marine organisms in ballast water according to claim 1, wherein the third water conveying pipe (71) is provided with a first control valve (9), and the first control valve (9) is electrically connected with a ship control system.
7. A control method of a ballast water marine organism prevention treatment system is characterized by comprising the following steps:
s1, the seawater sucked by the sea chest enters a water inlet pipeline, and after passing through a ballast water pump (3), the seawater respectively enters a ballast water treatment device and a ballast water tank through a first water conveying pipe (62) and a second water conveying pipe (61);
s2, electrolyzing seawater into electrolyzed seawater containing sodium hypochlorite solution with specific concentration by the ballast water treatment device (1), wherein the electrolyzed seawater enters a third water conveying pipe (71) and a main water outlet pipe through a water conveying main pipe (7), enters a ballast water cabin through the third water conveying pipe (71), enters a seabed door through the main water outlet pipe, is ionized in the seawater to generate hypochlorite and sodium ions, the hypochlorite is hydrolyzed to generate hypochlorous acid, and the hypochlorous acid penetrates into cells through cell walls to destroy enzyme systems of the cells, so that marine organisms in the ballast water cabin and the seabed door are killed.
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| CN201911120821.8A CN110902896A (en) | 2019-11-15 | 2019-11-15 | Ballast water marine organism prevention treatment system and control method thereof |
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| CN201911120821.8A CN110902896A (en) | 2019-11-15 | 2019-11-15 | Ballast water marine organism prevention treatment system and control method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114959745A (en) * | 2022-07-08 | 2022-08-30 | 上海外高桥造船有限公司 | FPSO prevents marine organism system |
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