DE112008002979B4 - System for sampling from ship's ballast water - Google Patents

Abstract

A system (14) for sampling ballast water from ships to study aquatic microorganisms contained in the ship's ballast water, comprising: a sampling nozzle (141) contained in a water fill string for loading the ballast water into a ballast tank (2) and / or a ballast water discharge string disposed in the ballast tank (2) out of a ship and continuously sampling a portion of the ballast water from said water fill string and / or said drain string; and a sampling device (143) for compressing the aquatic organisms contained in the ballast water sampled from said sampling port (141), said sampling device (143) having a water storage tank (300) for adjustably retaining reservoir water therein so as to supply a predetermined amount Reservoir water is retained; a filter cloth (303) having an upper end opening (303a) and a lower end opening (303b) immersed in the reservoir water in said water storage container (300) so as to expose said upper end opening (303a) and the interior of said water storage container (303b). 300) is divided into two parts, that is, inner and outer regions; a nozzle (308) having a supply port (308a) for supplying ballast water sampled from said sampling port (141) into the interior of said upper end port (303a) of said filter cloth (303)); ...

Description

The present invention relates to a ship ballast water sampling system, and more particularly to a ship ballast water sampling system in which samples are continuously taken from the ballast water to determine whether or not the ballast water received in the ship meets a standard.

In cargo ships for transporting crude oil, containers and the like, a ballast tank is provided to maintain the stability of the body of a ship during navigation. Usually, the ballast tank is filled with ballast water when the crude oil or the like is not loaded, and when the crude oil, the containers or the like are to be loaded, the ballast water is discharged to adjust a buoyancy of the ship's body and to stabilize the hull.

As mentioned above, the ballast water is required for the safe navigation of ships, and usually seawater is used in a port where cargo is handled. The amount is estimated at 3 to 4 billion tons per year on a global scale.

In the ballast water are mixed aquatic organisms (including microorganisms and bacteria) that live in the harbor from which the water is taken up, and with the movement of the ship also the aquatic organisms are transported to foreign lands.

Therefore, the destruction of an ecosystem in which organisms that do not originally inhabit the marine area have taken the place of the existing species of organisms has become serious.

In the light of such a situation, diplomatic conferences at the International Maritime Organization (IMO) have adopted the International Convention for the Control and Control of Ballast Water and Ship Residues, and the obligation to regulate ballast water is proposed for vessels built in 2009 and later be applied.

Therefore, ships must discharge clean ballast water that complies with the Convention.

Whether the ballast water drained from the vessel meets the above standard or not should be investigated by taking a portion of the ballast water as sample water. Known Probenamesysteme are for example in WO 2008/143177 A1 and JP 2007 / 135582A disclosed. In this case it is necessary to take a maximum of once 3 m ^{3 of} the sample water as a sample to determine a stock of aquatic organisms contained in the ballast water, which means that a large storage tank with a capacity of 3 m ³ installed in the ship should be.

However, it is extremely difficult, especially for existing ships, to ensure a space for installing a large storage tank with a capacity of 3 m ³ in the ship.

Moreover, it is an extremely time-consuming job to directly take samples of ballast water in a ballast tank that is large and subdivided into a plurality of chambers.

Also, the study of a population of aquatic organisms requires an extremely laborious work to be done while observing the sample water through a microscope and testing the aquatic organisms living in the sample water. Thus, if a lot of the sample water becomes very large, as in the study of ballast water, work should first be started with compaction of the aquatic organisms from the large amount of ballast water, which requires a long working time. During this period, the ship can not drain the ballast water and a load work or downhill can not be done, which is a big loss for shipping companies. Therefore, the most important point is to finish the investigation of the ballast water in a short time.

However, in the microscopic study, the aquatic organisms must be condensed from the ballast water while they are alive, and this compaction work requires an extremely long time and labor, which has made time reduction of the ballast water examination extremely difficult. The organisms can be condensed faster with filter cloths that filter the organisms out of the ballast water. However, the organisms clog the filter cloths and thereby complicate the sampling.

Therefore, it is an object of the present invention to provide a ship ballast water sampling system which does not require the installation of a large storage tank, but can easily and continuously pick up the ballast water and sampl the aquatic organisms contained in the ballast water while they are alive.

The system described in claim 1 is a ship ballast water sampling system for analyzing aquatic organisms contained in the ship's ballast water a sampling nozzle installed in a water filling line for filling the ballast water into a ballast tank and / or a discharge line for discharging the ballast water in the ballast tank from a ship and continuously sampling a part of the ballast water from the water filling line and / or the discharge line; and a sampling device for compressing the aquatic organisms contained in the ballast water sampled from the sampling nozzle, the sampling device having a water storage tank for adjustably retaining reservoir water therein so as to retain a fixed amount of reservoir water; a filter cloth having an upper end opening and a lower end opening immersed in the reservoir water in the water storage container so as to expose the upper end opening, and dividing the inside of the water storage container into two parts, that is, inner and outer regions; a spigot having a supply port for supplying ballast water sampled from the sampling spout into the interior of the upper end opening of the filter cloth; a drain port for discharging the reservoir water in the water storage tank from outside the filter cloth in the water storage tank; a reservoir portion disposed subsequent to the lower end opening of the filter cloth in the water storage container and temporarily retaining water containing aquatic organisms remaining in the filter cloth when the reservoir water in the water storage container is drained through the discharge port; and an accommodation container for housing water containing the aquatic organisms retained in the reservoir portion, said nozzle being rotatably disposed along an inner periphery of said filter cloth to permit rotation of said supply port and opened when the ballast water in the interior said filter cloth is supplied and / or the reservoir water is discharged into said water storage tank.

The system of claim 2 includes a drainage tank for temporarily retaining the reservoir water drained from the water storage reservoir, and a drainage pump for continuously draining the reservoir water in the drainage tank to the water fill line and the drain leg.

The system of claim 3 comprises a sampling valve for opening / closing a flow passage of the ballast water supplied to the sampling device, a flow meter for measuring a supply amount of the ballast water supplied to the sampling device, and first control means for controlling the opening / closing of the sampling valve based on a measurement result of the flow meter ,

The system according to claim 4 further comprises a drain valve for opening / closing the drain port, and further comprising first control means closing and controlling the sampling valve based on the measurement result of the flowmeter and then opening and controlling the drain valve to supply the reservoir water in the water storage tank drain through the drain port.

The system according to claim 5 is configured to provide the ballast tank in plural, and further open / close valve for opening and closing the water fill string and / or the drain string of each of the ballast tanks, visualization means for visualizing information, and second open / close control means Controlling the opening / closing valve so that the ballast water for each tank is filled or discharged with respect to the plurality of ballast tanks, obtaining the information of the ballast tank during the water filling or discharging, uniquely associating the ballast tank that performs the water filling or discharging the ballast water sampled from the sampling port when the ballast water is sampled from the sampling port, and outputting the result to the visualization means.

The system according to claim 6 comprises visualization means for displaying the information on a screen and / or a printer for printing the information.

According to the present invention, there is provided a ship ballast water sampling system wherein a large storage tank need not be provided, ballast water can be simply and continuously sampled, and the aquatic organisms contained in the ballast water can be sampled while they are being sampled Are life, be provided. By the rotation of the nozzle, the filter cloth is uniformly applied along its inner circumference with ballast water, so that at least local blockages of the filter bowl are avoided.

1 Fig. 3 is a configuration diagram illustrating an overview of an essential part of a ship and showing a ship ballast water sampling system on a plan view;

2 Fig. 13 is a configuration diagram illustrating a detail of the sampling system of marine ballast water;

3 is an enlarged diagram of part A in FIG 2 ;

4 FIG. 4 is an overview diagram illustrating an example of a sampling device; FIG.

5 Fig. 15 is a diagram for explaining a mesh size of a filter cloth;

6 Fig. 10 is a diagram for explaining an operation of the sampling device;

7 Fig. 10 is a diagram for explaining an operation of the sampling device;

8th Fig. 10 is a diagram for explaining an operation of the sampling device;

9 Fig. 10 is a diagram for explaining an operation of the sampling device; and

10 FIG. 10 is an overview diagram illustrating another manner of setting a water storage amount in a water storage tank to a fixed amount. FIG.

Embodiments of the sampling system will now be described with reference to the accompanying drawings.

1 Fig. 3 is a configuration diagram illustrating an outline of a ballast water pipe plant in which a ship ballast water treatment apparatus in an existing ballast water pipe plant and a ship ballast water sampling system according to the present invention are arranged on a plan view. Here a container ship loading containers serves as an example of a ship. In the figure, reference number 1 a hull, and reference number 2 indicates a variety of near a bow of the hull 1 arranged ballast tanks.

In every ballast tank 2 is made from a container arranged near the bottom of the ship 3 by operation of a ballast pump 4 Ballast water added. In the present invention, as the ballast water to be treated, seawater, fresh water and the like are used, and such ballast water contains aquatic organisms such as zooplankton, phytoplankton and the like, microorganisms, bacteria and the like (hereinafter simply referred to as aquatic organisms). The ballast pump 4 is on an inlet pipe 5 Arranged to clear the ballast water through the sea chest 3 into the hull 1 and a sieve 6 is at a part 5 ' on a primary side (inlet side of the ballast pump 4 ) of the inlet pipe 5 inserted.

This sieve 6 eliminates relatively large impurities in the ballast pump 4 flowing ballast water. For example, those having a hole of 5 to 10 mmφ or preferably 8 mmφ with a pitch of 5 to 15 mm or preferably 11 mm may be used.

numeral 7 is a hull 1 crossing tube, and the two ends are on both sides of the hull 1 arranged drain ports 8th and 8th' connected. A part 5 '' a secondary side (outlet side) of the ballast pump 4 of the inlet pipe 5 is with a middle part of the pipe 7 connected.

Between the pipe 7 and every ballast tank 2 is a main pipe 9 for filling the ballast water into each ballast tank 2 and draining the ballast water from each ballast tank 2 arranged, and its one end is with a middle part of the pipe 7 connected. The other end is one in each ballast tank 2 arranged filling or drainage 10 to fill and drain any ballast tank 2 connected.

numeral 11 is a bypass tube used to drain the ballast water in each ballast tank 2 by operation of the ballast pump 4 from the hull 1 is out, and is at the part 5 ' on the secondary side (outlet side) of the sieve 6 in the inlet pipe 5 arranged to the primary side (inlet side) of the ballast pump 4 and the main pipe 9 to connect with each other.

Components with reference numbers 12a to 12g are opening / closing valves.

When the ballast water from the ballast water pipe system into each ballast tank 2 is to be filled, the opening / closing valves 12a . 12b . 12e and 12g open while the opening / closing valves 12c . 12d respectively 12f be closed, and then the ballast pump 4 operated and the ballast water from the lake box 3 through the inlet pipe 5 added. From the ballast water coming out of the sea chest 3 to the inlet pipe 5 flows through the sieve 6 big waste is removed, and then it gets through the hull 1 crossing arranged pipe 7 to the main pipe 9 transferred. That to the main pipe 9 Convicted ballast water gets from that in each ballast tank 2 arranged filling / drainage pipe 10 in every ballast tank 2 filled.

Therefore, in this case, the inlet pipe 5 , the pipe 7 and the main pipe 9 in the Ballast water pipe plant a Wassereinfüllstrang for filling the ballast water in the ballast tank 2 ,

If the ballast water in each ballast tank 2 to be drained, the opening / closing valves 12b . 12c . 12d and 12g open while the opening / closing valves 12a and 12e be closed, and then the ballast pump 4 operated, and the ballast water in each ballast tank 2 flows from the fill / drain port 10 through the main pipe 9 , the bypass tube 11 , the inlet pipe 5 and the ballast pump 4 in the pipe 7 and will come from the discharge ports 8th and 8th' on both sides of the hull 1 drained to the outside.

Therefore, in this case, the main pipe 9 , the bypass tube 11 , the inlet pipe 5 and the pipe 7 in the ballast water pipe system, a drainage line for draining the ballast water in the ballast tank 2 out of the ship.

In such an existing ballast water pipe plant is a treatment device 13 arranged for ballast water.

The treatment device 13 is arranged such that it from a central part of a pipe part 7 ' between a connection part to the inlet pipe 5 and a connection part to the main pipe 9 in the tube 7 Diverting in the existing ballast water pipe plant described above and receives the ballast water, aquatic organisms and bacteria in the ballast water, sterilizes or kills it and back to the pipe section 7 ' returns.

In such a treatment device 13 For example, a filter for removing relatively large aquatic organisms in the ballast water, a device for sterilizing or killing the aquatic organisms and bacteria by the strong oxidizing action of ozone by filling ozone generated by an ozone generator at a predetermined concentration into the ballast water may comprise an apparatus for destroying the aquatic organisms by a shearing force, which is generated when the ballast water is passed through a slit plate having a slit-shaped opening, a device for removing or decomposing undissolved ozone after the filling of the ozone and the like may be arranged.

reference numerals 13a . 13b and 13c in the figure, opening / closing valves for receiving and discharging the ballast water between the pipe 7 and the treatment device 13 ,

The treatment of ballast water by the treatment device 13 is performed when the ballast water is taken into the ship. Therefore, when treating the ballast water, the opening / closing valves 12a . 12b . 12e . 12g . 13b and 13c open while the opening / closing valves 12c . 12d . 12f respectively 13a be closed, and then the ballast pump 4 operated, and the ballast water is from the sea chest 3 through the inlet pipe 5 added. From the ballast water coming out of the sea chest 3 to the inlet pipe 5 flows through the sieve 6 removed large waste, and then it flows through the pipe 7 into the treatment device 13 where the removal, sterilization or killing of the aquatic organisms and bacteria in the ballast water is carried out.

In this version is a sampling system 14 for ship's ballast water according to the present invention to investigate whether the ballast water meets the IMO standards after being discharged from the treatment device 13 was treated or not. This sampling system 14 is arranged so that it is capable of that from the hull 1 ballast water to be discharged from a pipe part 7 '' between a part, with which the main pipe 9 is connected, and a drain port 8th' in the tube 7 take. The details of the sampling system 14 are described below.

When the ballast water from the hull 1 is to be drained, to remove harmful bromine oxide-containing oxidizing agent in the ballast water, preferably a removal device 15 for removing the oxidizing agent by activated carbon, as in 1 shown. With the help of the removal device 15 For example, oxidizing substances (for example, bromine oxides) contained in the treated ballast water, such as harmful oxidizers and the like, may be removed.

In 1 is the removal device 15 between a connection part to the main pipe 9 and the sampling system 14 in the pipe part 7 '' in the tube 7 arranged. In the removal device 15 For example, an activated carbon tank is provided so that through the pipe 7 drained ballast water is taken and passed through the activated carbon tank and then back to the pipe 7 is returned.

The removal device 15 is in front of the sampling system 14 arranged, but she can between the sampling system 14 and the drain port 8th' be arranged.

2 is a configuration diagram that provides an overview of the sampling system 14 illustrated. Here are just four ballast tanks 2A . 2 B . 2C and 2D shown. The other same reference numbers as in 1 denote the same configurations.

With the help of the above sampling system 14 becomes a part of through the pipe part 7 '' in the tube 7 flowing ballast water sampled.

3 is an enlarged diagram of an A-part in FIG 2 , and as shown in the figure, a sampling nozzle 141 against the water flow direction of the ballast water in the pipe part 7 '' arranged so that part of the ballast water in the pipe part 7 '' (hereinafter also referred to in some cases as sample water) taken at the same flow rate as a sample and through a sampling tube 142 to a sampling device 143 is sent. Sampling at the same flow rate means sampling where the flow velocity through the pipe section 7 '' flowing ballast water equal to the flow velocity of the sampling pipe 141 as a sample taken sample water is. To sample the sample water is pressure by driving the ballast pump 4 used.

The sampling nozzle 141 should be continuous part of the through the pipe part 7 '' in the tube 7 take flowing ballast water as a sample, and a pipe diameter of the sampling nozzle 141 For example, if the inside diameter of the pipe is 25 mm 7 300 mm.

In the sampling tube 142 are a flow meter 144 for measuring a flow rate (accumulated flow rate) of the sample water and a sampling valve 145 for opening / closing a flow passage of the sampling tube 142 arranged. A measurement result of the flowmeter 144 gets to a control part 100 cleverly.

The control part 100 checks based on the measurement result of the flowmeter 144 Whether, for example, a predetermined amount of the ballast water or 3 m ^{3 of} the ballast water to the sampling device 143 or not, and controls opening / closing of the sampling valve 145 (first control means).

The control part 100 Furthermore, it also individually controls opening / closing (second control means) of the opening / closing valve 12g so that water inlets / drains each of the ballast tanks 2A to 2D for each tank, and controls an opening degree of one in the pipe 7 arranged opening / closing valve 14a ,

The following is a detail of the sampling device 143 in 4 shown.

In 4 denotes reference number 300 a water storage tank, and reference number 301 denotes a lid body, which at an upper part of the water storage container 300 is provided. The water storage tank 300 is formed, for example, in a cylindrical shape, and a filter cloth 303 for sampling the sampled aquatic organisms is installed therein.

The filter cloth 303 has an upper end opening 303a and lower end opening 303b and preferably is substantially in the form of an inverted cone extending from the upper end opening 303a to the lower end opening 303b tapered, formed, and removably mounting the peripheral edge of the upper end opening 303a on an upper inner peripheral surface of the water storage tank 300 is the filter cloth in a suspended state in the water storage tank 300 Installed. As a result, the inside of the water storage tank is 300 in an area 300A outside the filter cloth 303 and an area 300B inside the filter cloth 303 divided.

A commercially available product can be considered the filter cloth 303 be used. A cloth woven by, for example, crossing a warp yarn and resin weft yarn such as nylon in a wetting state in which a cross point between the warp yarn and weft yarn is welded by heat and fixed to prevent mesh shift is preferable , A mesh size of the filter cloth 303 is determined according to the size of the aquatic organism to be sampled so that, for example, the mesh size is 50 μm when an aquatic organism with a size of more than 50 μm is to be sampled. This mesh size is determined by a distance A of a diagonal line of a grid that exists between the warp thread 303A and the weft 303B of the filter cloth 303 is formed, as in 5 shown.

A reservoir part 304 is at the lower end opening 303b of the filter cloth 303 provided below. The reservoir part 304 is a container for temporary retention of water (compressed water) that contains the aquatic organisms that end up in the filter cloth 303 the water storage tank 300 for example, by a synthetic resin or the like in a funnel shape sufficiently smaller than the water storage tank 300 is, trained. With a lower part of the reservoir part 304 is a water sampler ear 305 connected by an opening / closing valve 306 is opened / closed, and by opening the opening / closing valve 306 can that be in the reservoir part 304 withheld, the aquatic Organisms containing water (compressed water) in an accommodation container 307 outside the water storage tank 300 be recorded. The accommodation container 307 is in the water sampler ear 305 removably arranged.

The other end of the water sampler ear 142 with the provided at one end sampling neck 141 is from the upper part on the side part of the water storage tank 300 in the water storage tank 300 and toward the interior of the upper end opening 303a of the filter cloth 303 arranged. One at the other end of this water sampler ear 142 arranged neck 308 is inside the filter cloth 303 deeper than the upper end opening 303a of the filter cloth 303 arranged and is bent, leaving a supply port 308a which is opened at an end portion thereof, toward the inner peripheral surface of the filter cloth 303 is directed. The stub 308 is preferably arranged to be capable of 360 degree rotation in the horizontal direction by drive means (not shown) and the supply port 308a is along the inner periphery of the filter cloth 303 rotatable.

A liquid level sensor 309 which is a liquid level detecting means is lower than the upper end opening 303a of the filter cloth 303 and higher than the neck 308 arranged to a water level inside the filter cloth 303 to detect. A detection signal of the liquid level sensor 309 will be at the in 2 shown control part 100 output.

In the middle of the water sampler ear 142 is a switching valve 310 outside the water storage tank 300 inserted, and a branch pipe 311 branches from the switching valve 310 from. The branch pipe 311 is from the upper part on the side part of the water storage tank 300 arranged inward, and its distal end 311 is outside the filter cloth 303 arranged to that of the water sampling pipe 142 fed sample water outside the filter cloth 303 the water storage tank 300 supply.

In the water storage tank 300 is an overflow pipe 312 similarly outside the filter cloth 303 arranged, penetrates into a lower part 300a the water storage tank 300 one and is with a drain pipe 146 connected. The overflow pipe 312 has overflow of excess water when inside the water storage tank 300 has an amount of water that is greater than a certain level, and leaves it from the water storage tank 300 out, leaving the interior of the water storage tank 300 is adapted so that it always has a predetermined amount of water, and determines the water level of the reservoir water in the water storage tank 300 through a position of an upper end opening 312a , The upper end opening 312a is arranged so that it is lower than the upper end opening 303a of the filter cloth 303 , deeper than the liquid level sensor 309 and higher than the lower end opening 303b of the filter cloth 303 lies.

In the lower part 300a of the area 300A in the water storage tank 300 is a drain port 313 formed, and by opening a drain valve 314 the reservoir water therein becomes the discharge pipe 146 drained. The drain valve 314 is from the in 2 shown control part 100 opened / closed and controlled.

Outside the filter cloth 303 in the water storage tank 300 is a water flow generator 315 arranged. The water flow generator 315 Supports uniform retention and collection of aquatic organisms within the reservoir portion 304 by injecting water towards the outer peripheral surface of the filter cloth 303 to a flow of water from the outside to the inside of the filter cloth 303 generate and peel off the aquatic organisms that are on the inside of the filter cloth 303 stick, in a state where water in the water storage tank 300 is retained, and is preferably arranged in the present invention.

The water injection through the water flow generator 315 can be done using the in the water storage tank 300 retained reservoir water outside the filter cloth 303 by driving means such as a pump (not shown).

The water flow generator 315 is preferably in a ring shape along the outer periphery of the filter cloth 303 but a reasonable number of the water flow generators may be arranged at a predetermined interval in a pitch along the outer periphery of the filter cloth 303 be arranged.

The water flow generator 315 can also be moved vertically inside the water storage tank 300 be arranged.

Hereinafter, an operation of the above sampling device 143 under the use of 6 to 9 described.

First, as in 6 shown by means of an actuation of the switching valve 310 Water from the water sampler ear 142 through the branch pipe 311 the area 300A outside the filter cloth 303 in the water storage tank 300 supplied to reservoir water W1 in the Water storage tank 300 withhold. As the reservoir water W1 becomes, from the point of view, a living environment of the aquatic organisms in the water storage tank 300 maintain, preferably ballast water used.

The reservoir water W1 leading to the outside of the filter cloth 303 in the water storage tank 300 is fed through the filter cloth 303 in the area 300B inside the filter cloth 303 one. The reservoir water W1 is stored in the water storage tank 300 withheld in a constant amount of water, so that when the reservoir water the upper end opening 312a the overflow pipe 312 exceeds, from the overflow pipe 312 is drained.

At this time, the upper end opening 303a of the filter cloth 303 is higher than the reservoir water level and is not covered by the reservoir water W1. In addition, the aquatic organisms enter with the mesh size of the filter cloth 303 bordering size, that is with the filter cloth 303 size to be sampled, not inside the filter cloth 303 even if the aquatic organisms in the reservoir water W1 in the area 300A outside the filter cloth 303 are included.

When a predetermined amount of the reservoir water W1 in the water storage tank 300 is withheld, as in 7 is shown by means of the actuation of the switching valve 310 from the sampling nozzle 141 through the sampling tube 142 nifty sample water W2 from the neck 308 the area 300B inside the filter cloth 303 fed. At this time, the feed is preferably carried out while the nozzle is being cut 308 is rotated in the horizontal direction. The rotation of the neck 308 For example, it can be done once a second.

With the help of the supply of sample water W2 from the nozzle 308 into the interior of the filter cloth 303 becomes a water storage amount in the water storage tank 300 increased, but an increase runs from the overflow pipe 312 over and out of the water storage tank 300 drained out, and inside the water storage tank 300 a constant amount of water is maintained. Thus, it can be continued regardless of the capacity of the water storage tank 300 a desired large amount of the sample water W2 are supplied.

By continuously feeding the sample water W2 from the nozzle 308 into the interior of the filter cloth 303 the increase is from the overflow pipe 312 over, eliminating the excess water from the inside of the filter cloth 303 is moved outward, and a lot of the aquatic organisms with the sample to be sampled, not by the filter cloth 303 can pass through, increases in the filter cloth 303 ,

Since the reservoir water W1 first in the water storage tank 300 is retained at that time prevents the inside of the filter cloth 303 supplied sample water W2 contained aquatic organisms suddenly filtered and in contact with the filter cloth 303 but damage to a single organism in the aquatic organisms through the filter cloth 303 can be prevented, and the aquatic organisms do not die.

Also, a vortex flow within the filter cloth 303 are generated by the sample water W2 is supplied while the nozzle 308 is rotated. Even if the aquatic organisms on the inner peripheral surface of the filter cloth 303 Therefore, the sample water W2 may be supplied while the aquatic organisms are being peeled off from the vortex flow, clogging the filter cloth 303 can be prevented and the aquatic organisms can be compacted efficiently.

If the water level is within the filter cloth 303 due to a circumstance, such as clogging of the filter cloth 303 , the overflow pipe 312 or the like should be increased, this is from the liquid level sensor 309 detected. By using this detection as a trigger, the in 2 shown control part 100 automatically switch off the supply of sample water W2. As a result, an overflow of the interior of the filter cloth 303 supplied sample water W2 over the upper end opening 303a of the filter cloth 303 prevented.

A flow rate from that of the neck 308 the interior of the filter cloth 303 supplied sample water W2 is from that in the in 2 shown water sampling pipe 142 arranged flow meter 144 measured, and opening / closing of the sampling valve 145 is from the control part 100 controlled on the basis of the measurement result. Thus, if, for example, the aquatic organisms contained in an amount of water of 3 m ³ are to be measured, by measuring the amount of 3 m ³ by the flow meter 144 a desired amount of water can be easily supplied without requiring a tank or the like having a large capacity for containing the sample water W2. As the water storage tank 300 through the overflow pipe 312 is adapted so that it always has a constant amount of water, can also by continuously supplying a desired amount of water regardless of the capacity of the water storage tank 300 the aquatic organisms per desired water quantity unit are taken exactly as a sample.

When a desired amount of water of the sample water W2 from the nozzle 308 the interior of the filter cloth 303 Subsequently, the supply of the sample water W2 is turned off by the sampling valve 145 by controlling the control part 100 is closed, and then, as in 8th shown the drain valve 314 through the control part 100 opened to the reservoir water W1 in the area 300A in the water storage tank 300 through the drain port 313 drain.

When draining, not only the reservoir water W1 outside the filter cloth 303 but also the sample water W2 inside the filter cloth 303 from the inside to the outside of the filter cloth 303 moved and from the drain port 312 drained. Therefore, the aquatic organisms that do not pass through the filter cloth remain 303 can pass through within the filter cloth 303 ,

At this time, the aquatic organisms that are on the inside of the filter cloth 303 adhere, preferably washed off, by washing water or the like, in which the aquatic organisms are not included, through the rotating nozzle 308 towards the inner peripheral surface of the filter cloth 303 is supplied.

In addition, preferably, in addition to or instead of spraying water from the nozzle 308 , a water flow from the water flow generator 315 towards the outer peripheral surface of the filter cloth 303 generated so that the aquatic organisms on the inside of the filter cloth 303 be detached during deflation.

Although not shown, it is also preferable that micro vibrating means for applying microvibration to the filter cloth 303 are arranged so that they are able, through the control part 100 be controlled so that the peeling of the aquatic organisms by microvibration of the filter cloth 303 during discharge is encouraged. The microvibration of the filter cloth 303 by the Mikrovibrationsmittel may be in the supply of the sample water W2 to the inside of the filter cloth 303 be performed.

After the reservoir water W1 in the water storage tank 300 from the drain port 313 has been drained or when the draining progresses until the water level of the reservoir water W1 is lower than the reservoir portion 304 is how in 9 Only W3 compressed water containing the aquatic organisms found within the filter cloth is shown 303 remain in the reservoir part 304 forfeited. Because in this condensed water W3 the aquatic organisms essentially without a pressure apply, with which the organisms of the filter cloth 303 Filtered, condensed, the aquatic organisms are compacted while they are alive without being damaged.

The compressed water W3 in the reservoir part 304 is in the storage container 307 from the water sampling tube 305 by opening the opening / closing valve 306 through the control part 100 forfeited. The retention of the compressed water W3 in the storage container 307 can by receiving a detection signal by the control part 100 from in the water storage tank 300 arranged water level detection means (water level detection sensor) (not shown) are performed. Beyond the above, it may be configured such that a quantity of water discharged from the drain valve 314 is drained, measured, or an elapsed time since the drain valve was opened 314 is used as a trigger.

The aquatic organisms contained in the compressed water W3 are sampled and densified live without damage to individual organisms. In addition, the work can be done easily and in a short time, since the compression work only requires the supply of the desired amount of ballast water (sample water).

As the water storage tank 300 is adjusted so that a retained amount of water is kept constant, it can also be formed regardless of the amount of water of the sample water supplied W2 in a compact manner and has an advantage of space-saving.

As a means for adjusting the amount of reservoir water in the water storage tank 300 to a constant amount can instead of the overflow pipe 312 a drain port for overflow (not shown) in a side wall of the water storage tank 300 be arranged to overflow directly from the drain port to the outside.

As in 10 In addition, it may be configured such that two water level detection sensors 316A and 316B at upper and lower predetermined positions in the water storage tank 300 are arranged and controlled so that when the upper water level detection sensor 316A detected a water level, the drain valve 314 by a water quantity control part 317 is opened to drain the reservoir water, while if the lower Water level detection sensor 316B the water level is no longer detected, the drain valve 314 through the water flow control part 317 is closed and the reservoir water in the water storage tank 300 is adjusted so that it becomes a constant amount of water. The function of the water quantity control part 317 can in the in 2 shown control part 100 be provided.

Instead of the configuration in which the reservoir part 304 at the lower end opening 303b of the filter cloth 303 is provided below, the water sampling tube 305 at the lower end opening 303b of the filter cloth 303 be provided directly below. In this case, the inside of the water sampling pipe acts 305 between the lower end opening 303b of the filter cloth 303 and the opening / closing valve 306 as a reservoir part for retaining the compressed water W3.

In addition, a configuration for supplying the reservoir water W1 to the outside of the filter cloth 303 in the water storage tank 300 a configuration for feeding the ballast water or other types of water through a pipe in a system that is from the water sampling tube 142 different, rather than the branch pipe 311 from the water sampling tube 142 branches.

As in 2 shown is a drainage tank 147 with the discharge pipe 146 for draining from the sampling device 143 drained water (including overflow water) is connected, and the drained water is temporarily in this drainage tank 147 forfeited. In the drainage tank 147 a water level detector (not shown) is arranged, and when the interior reaches a predetermined water level, it is passed through a drainage pump 148 passing through the control section 100 is driven and controlled, continuously the pipe part 7 '' in the tube 7 recycled.

The drainage tank 147 is a so-called buffer tank for temporary retention of the water from the sampling device 143 is drained and through the drainage pump 148 to the pipe part 7 '' is to be fed, and he does not have a large capacity, but may be formed by a tank with a small capacity. In the drainage tank 147 is a vent port 147a arranged.

The following is an example of the control for sampling by the sampling system 14 described.

If that's in each of the ballast tanks 2A to 2D retained ballast water is to be drained controls the control part 100 expediently an opening degree of the opening / closing valve 14a and first opens and controls, for example, only the opening / closing valve 12g the ballast tank 2A to drain the ballast water from the ballast tank 2A initiate. The ballast water is at this discharge the ballast water already through the treatment device 13 treated from the sampling neck 141 in a run through the pipe part 7 '' of the pipe 7 in the direction of the drain port 8th' was sampled and flows into the water sampling tube 142 , For this sampling of the sample water is a by driving the ballast pump 4 generated pressure used.

When a predetermined amount of the sample water continues to flow from the sampling port 141 As a sample is taken, the aquatic organisms are compacted and sampled 143 collected as described above and in the storage container 307 forfeited.

Here is the sampling system 14 a monitor 201 and a printer 202 , which are visualization means, near the sampling device 143 on, and they are each electrically connected to the control section 100 connected. The display 201 is formed for example by a liquid crystal monitor and visualizes information of the ballast tank 2A Currently draining the ballast water by placing it on a screen from the control section 100 represents. In addition, the printer performs 202 Visualize by giving the information of the ballast tank 2A that of the control part 100 skillful ballast drains off, prints and places them on a label sheet 202a or the like.

The sampling amount of the sample water is from the control part 100 through the flowmeter 144 supervised. During this period, the sample water continuously sampled progresses continuously from the water storage tank 300 the sampling device 143 over and gets into the drainage tank 147 Retained and then continuously the pipe part 7 '' of the pipe 7 recycled.

When the predetermined amount of the sample water through the sampling device 143 from the sampling nozzle 141 has been taken as a sample, the sampling valve 145 closed and operated, while the opening degree of the opening / closing valve 14a is reset, and the sampling of the ballast water in the sampling device 143 is closed.

When a predetermined amount of the sample water from the ballast tank 2A drained ballast water has been sampled, a worker can take the ballast tank 2A clearly associate with the sample water by holding the monitor 201 checks or the label sheet 202a , on the the one from the printer 202 information given to indicate the ballast tank 2A printed on the from the sampling device 143 removed housing container 307 attached.

For a clear association between the ballast tank 2A and the sample water can only be one of the monitor 201 and the printer 202 or a printer capable of delivering the information directly to the storage bin 307 to print, can be used instead of the above.

After that, also in the other ballast tanks 2 B to 2D similar to the above, the sample water is sampled sequentially from the discharged ballast water.

If the ballast water as a result of the study of the sample water in the housing container 307 does not meet the IMO standards, it is preferable that an ozone filling member (not shown) beforehand attached to the pipe member 7 '' in front of the drain connection 8th' is provided so that ozone is introduced into the ballast water to remove the existing aquatic organisms to sterilize or kill and then the water from the hull 1 let out, or that the ballast water to be discharged again to the treatment device 13 is sent to again through the treatment device 13 to be treated.

As described above, according to the sampling system of the ship's ballast water according to the present invention, the sample water is continuously passed through the sampling port 141 out of the pipe 7 flowing ballast water is sampled and there is no work required to get from each of the ballast tanks 2 samples can be taken directly, but samples can simply be taken from the ballast water.

In this version, the sample water is passed through the sampling system 14 taken when discharging the ballast water as a sample, however, the sampling system 14 take the sample water as a sample when filling in the ballast water. Therefore, in this case, the sampling system 14 for example in the pipe part 7 ' of the pipe 7 between the treatment device 13 and a connection part to the main pipe 9 arranged so that the sample water from the ballast water can be sampled after the water through the treatment device 13 was treated and before putting it in each of the ballast tanks 2 is filled.

The sample water can also be sampled for increased safety during both filling and draining of the ballast water. In this case, the water sampling tube may be arranged such that the sample water through the single sampling system 14 can be taken as a sample from both the feed line and the discharge strand of the ballast water, or the sampling system 14 is arranged in each of both the fill strand and the discharge strand of the ballast water, so that separate sampling systems 14 be operated during filling and discharging the ballast water.

LIST OF REFERENCE NUMBERS

1

hull

2, 2A to 2D

ballast tank

3

container

4

ballast pump

5

inlet pipe

6

scree

7

pipe

8, 8 '

drain port

9

main pipe

10

/ Discharge-lop Wassereinfüll-

11

bypass pipe

12a to 12g

Open / close valve

13

treatment device

13a, 13b, 13c

Open / close valve

14

sampling system

141

sampling ports

142

Water sampling tube

143

sampling device

144

flow meter

145

Open / close valve

146

Return pipe

147

drainage tank

148

drainage pump

15

removal device

100

control part

201

display device

202

printer

202a

label sheet

300

Water storage tank

301

cover body

303

filter cloth

303A

warp

303B

weft

303a

upper end opening

303b

lower end opening

304

reservoir part

305

Water sampling tube

306

Open / close valve

307

accommodating container

308

Support

308a

supply port

309

Liquid level sensor

310

switching valve

311

branch pipe

311

supply port

312

Overflow pipe

312a

upper end opening

313

drain port

314

Open / close valve

315

Water flow generator

316A, 316B

Water level detector

317

Water quantity control part

Claims (6)

System ( 14 ) for sampling from ship's ballast water in order to study aquatic microorganisms contained in the ship's ballast water, comprising: a sampling nozzle ( 141 ) in a water filling line for filling the ballast water into a ballast tank ( 2 ) and / or a discharge line for discharging the ballast water in the ballast tank ( 2 ) is located out of a ship and continuously takes part of the ballast water from said water fill string and / or said bleed string as a sample; and a sampling device ( 143 ) for compressing in the said sampling tube ( 141 ) sampled ballast water containing aquatic organisms, said sampling device ( 143 ) a water storage tank ( 300 ) for adjustably retaining reservoir water therein such that a predetermined amount of reservoir water is retained; a filter cloth ( 303 ) with an upper end opening ( 303a ) and a lower end opening ( 303b ) stored in the reservoir water in said water reservoir ( 300 ) is immersed, so that said upper end opening ( 303a ) is exposed, and that the interior of said water storage tank ( 300 ) divided into two parts, that is, inner and outer regions; a nozzle ( 308 ) with a supply port ( 308a ) for feeding, from said sampling nozzle ( 141 ) sampled ballast water into the interior of said upper end opening ( 303a ) said filter cloth ( 303 )); a drain port ( 313 ) for draining the reservoir water in said water storage tank ( 300 ) from outside said filter cloth ( 303 ) in said water storage tank ( 300 ); a reservoir part ( 304 ), the lower end opening ( 303b ) said filter cloth ( 303 ) in said water storage tank ( 300 ), which temporarily stores water containing aquatic organisms contained in said filter cloth ( 303 ) when the reservoir water in said water reservoir ( 300 ) through said discharge port ( 313 ) is discharged; and a storage container ( 307 ) for accommodating water containing the aquatic organisms contained in said reservoir part ( 304 ), whereby said neck ( 308 ) rotatable along an inner circumference of said filter cloth ( 303 ) is arranged to rotate the said supply port ( 308a ) and opened when the ballast water enters the interior of said filter cloth ( 303 ) is supplied and / or the reservoir water in said water storage tank ( 300 ) is drained. System ( 14 ) for sampling from ballast water according to claim 1, further comprising: a drainage tank ( 147 ) for temporary retention of the said water storage tank ( 300 ) drained reservoir water; and a drainage pump ( 148 ) for the continuous draining of the reservoir water in said drainage tank ( 147 ) to said water fill string and said drain string. System ( 14 ) for sampling from ballast water according to one of claims 1 to 2, further comprising: a sampling valve for opening / closing a flow passage of said sampling device ( 143 ) supplied ballast water; a flow meter ( 144 ) for measuring a supply amount of said sampling device ( 143 ) supplied ballast water; and first control means for controlling the opening / closing of said sampling valve on the basis of a measurement result of said flow meter ( 144 ). System ( 14 ) for sampling from ballast water according to claim 3, further comprising a drain valve for opening / closing said drain port ( 313 ), said first control means determining said sampling valve on the basis of the measurement result of said flow meter ( 144 ) and then opens and controls said drain valve and controls to apply the reservoir water to said water storage tank (10). 300 ) through said drain port. System ( 14 ) for sampling from ballast water according to any one of claims 1 to 4, wherein said ballast tank ( 2 ) is provided in a plurality, and further comprising: opening / closing valve ( 12a -G) for opening or closing said water filler string and / or said drain string of each of said ballast tanks ( 2 ); Visualization means for visualizing information; and second control means for opening / closing controlling said opening / closing valve (16) 12a -G), so that the ballast water for each tank ( 2 ) with respect to said plurality of ballast tanks ( 2 ) is filled or discharged, obtaining the information of the ballast tank ( 2 ) during water filling or discharging, unequivocal association of the ballast tank ( 2 ), said water filling or - with that of said sampling nozzle ( 141 ) sampled ballast water when the ballast water from said sampling port ( 141 ) is taken as a sample, and outputting the result to said visualization means. System ( 14 ) for sampling from ballast water according to claim 5, wherein said visualization means is a monitor for displaying the information on a screen and / or a printer ( 202 ) for printing the information.

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