WO2018135747A2 - Simulated mesocosm for testing natural recovery ability of oil contaminated sediment - Google Patents

Abstract

A simulated MESOCOSM for testing the natural recovery ability of an oil contaminated sediment according to the present invention comprises: a testing water tank containing a marine sediment; and a pipeline structure for introducing a predetermined amount of seawater into the testing water tank at a predetermined time point, wherein the testing water tank has a supplying water tank located at an upper side thereof and a recovery water tank located at a lower side thereof so that the seawater moves by gravity. Accordingly, the present invention can solve the disadvantage of the conventional MESOCOSM which is implemented outdoors. Especially, the simulated MESOCOSM requires ultimately reduced manpower and cost and can be thus maintained even at low research expense.

Description

Simulated Mesochism Testing the Natural Resilience of Oil-Contaminated Sediments

The present invention relates to a simulated mesocosm for testing the natural recovery capacity of oil-contaminated sediments, and more particularly, to a simulated mesocosm for testing the natural recovery capacity of oil-contaminated sediments carried out indoors.

Mesochism (MESOCOSM) is an outdoor experiment system that is performed in a real marine environment. The experiment is performed in a natural ecosystem, not an indoor experiment under artificial conditions.

In order to evaluate the natural resilience against oil pollution, a certain area among oil-contaminated coastlines is selected as an experimental area, and the extent to which the experimental area is cleaned by the actual marine environment such as ebb and high tide is evaluated.

However, because the experiment was conducted in the field, manpower and cost were high, and various environmental variables were difficult to control. In other words, the experiment itself was difficult and the environmental variables were difficult to control, resulting in low accuracy and reliability of the experimental results.

It is an object of the present invention to mimic field mesocosms in a laboratory, to avoid waste of manpower and costs, and to control various environmental variables, making it easy to carry out experiments and improving the accuracy and reliability of the experimental results. It provides a simulated mesocosm that tests the sediment's natural resilience.

In particular, it is possible to simulate the clean seawater being supplied to or discharged from the sediment by the tidal phenomenon, thereby providing a simulated mesocosm that can evaluate the natural recovery ability of the sediment by the tidal phenomenon.

In addition, it provides a simulated mesocosm that can add various marine life to the supplied seawater and evaluate the natural resilience of the sediment by the supplied seawater and marine life.

The simulation mesocosm for testing the natural resilience of the oil-contaminated sediment of the present invention for achieving the above object includes an experimental tank containing the marine sediment and a piping structure for introducing a predetermined amount of seawater into the experimental tank. , The supply tank is located above the experimental tank so that the sea water is moved by gravity, and the recovery tank is located below the experimental tank.

In addition, the outer frame is provided with a lower space frame formed to accommodate the recovery tank, an experimental space frame formed to accommodate the experimental tank above the lower space frame, and an upper space frame formed to seat the supply tank above the experimental space frame. It includes, the outer frame, may be a steel structure connected to the steel beam.

In addition, the experimental tank may include a vertical diaphragm mounted therein to partition the interior of the experimental tank into a plurality of experimental spaces.

In addition, the test tank may include a horizontal diaphragm embedded to be horizontal with the bottom of the test tank.

In addition, a plurality of perforations are formed in the horizontal diaphragm, the mesh net is seated on the horizontal diaphragm so as to cover the perforations, a plurality of diaphragm support pillars are provided at the bottom of the experimental tank so that the horizontal diaphragm does not adhere to the bottom of the experimental tank. A handle may protrude from the horizontal diaphragm end.

In addition, a drain hole is formed in the bottom surface of the experimental tank communicating with the recovery tank, the drain can be formed on the side of the experimental tank to have a height lower than the horizontal diaphragm.

In addition, the piping structure may include an external supply pipe for introducing external seawater into the supply tank, an experimental supply pipe extending from the supply tank to the upper part of the experimental tank, and a recovery supply pipe extending from the bottom of the experimental tank to the recovery tank.

In addition, the experimental supply pipe may include a solenoid valve provided in the experimental supply pipe, and a control circuit unit provided at one side of the solenoid valve to operate the solenoid valve at a predetermined time.

The control circuit unit may include an input unit for receiving a signal from an external computer or generating a signal by an external operation, and a power applying unit for applying electric power to the solenoid valve based on the signal.

In addition, the experimental supply pipe may include a pressure reduction device for minimizing the diameter of the sea water falling toward the experimental tank bottom surface.

In addition, the hydraulic pressure reduction device may include a fallopian tube body mounted to be expanded to the test supply pipe, and a porous plate provided at the end of the fallopian tube body.

In addition, the pressure reduction device may be a pressure reducing valve provided at the end of the experimental supply pipe.

In order to achieve the above object, the simulated mesocosm experimenting with the natural resilience of the oil-contaminated sediment of the present invention, in the simulated mesocosm implemented indoors, so that the seawater is introduced into or discharged into the experimental tank containing the marine sediment by gravity , The supply tank is located above the experimental tank, the recovery tank is located below the experimental tank.

In addition, a piping structure may be provided between the supply tank, the experimental tank and the recovery tank, so that a predetermined amount of seawater flows into or out of the experimental tank.

In addition, a pressure reduction device may be provided in the piping structure so that the pressure of the seawater moving from the supply tank to the experimental tank is minimized.

Specific details of other embodiments are included in the "details for carrying out the invention" and the accompanying "drawings".

Advantages and / or features of the present invention and methods for achieving them will become apparent with reference to the various embodiments described below in detail in conjunction with the accompanying drawings.

However, the present invention is not limited to the configuration of each embodiment disclosed below, but may be implemented in a variety of different forms, each embodiment disclosed herein is to make the disclosure of the present invention complete, the present invention It is provided to fully inform the person skilled in the art the scope of the present invention, and it should be understood that the present invention is only defined by the scope of each claim of the claims.

According to the present invention, sediments contaminated with oil are accommodated in the experimental tank, and a predetermined amount of seawater is supplied to the experimental tank for a predetermined time, thereby simulating the natural recovery ability of the sediment by the low tide and the high tide.

Since the mesopism is simulated indoors, manpower and cost are minimized. As the experimental tank is made in a closed structure, it is possible to control the amount and type of marine organisms included in the sediment, and to test various environmental variables such as ambient temperature. Can be changed according to.

Therefore, it is possible to solve the disadvantages of the conventional mesocosism that was performed outdoors, and in particular, it is possible to significantly increase the accuracy and reliability of the experiment.

In addition, since the environmental variables are controlled, the accuracy and reliability of the experiment can be increased as compared to the outdoor test through the conventional mesocosm.

In addition, it is possible to supply or drain seawater to the experimental tank at a certain time every day.

In addition, the experimental tank can be introduced into the same amount of seawater into a plurality of experimental space formed by dividing the partition wall.

In addition, since the mesh is provided in the horizontal bulkhead, the drain hole is not blocked by the deposit.

In addition, since the handle is provided on the horizontal bulkhead, it is easy to separate the horizontal bulkhead from the test tank, thereby simplifying the cleaning of the test tank.

In addition, since the water collecting port is located at a position lower than the horizontal bulkhead, it is easy to collect the test water.

In particular, since the number of experiments can be collected at the bottom of each experimental space partitioned by the partition, it is easy to grasp the change in seawater according to the experimental conditions.

In addition, by providing a plurality of mesh nets, changing the height of the recovery supply pipe, or by providing a valve in the recovery supply pipe, it is possible to arbitrarily adjust the elapsed time from which all the seawater is discharged from the experimental water tank.

In addition, by manufacturing the recovery supply pipe in the U-shape or n-shape, backwater of the seawater discharged from the experimental water tank is prevented.

In addition, since fine deposits contained in the sea water are collected in the portion formed in the U shape of the recovery supply pipe, it is possible to easily solve the blockage of the recovery supply pipe.

In addition, when the inside of the experimental tank is blocked from the external environment, the movement of microorganisms or marine organisms contained in the sediment is essentially blocked, thereby improving the reliability and accuracy of the experiment.

In addition, a plurality of experimental spaces can be secured by the vertical bulkhead.

In addition, since the seawater is moved to the supply tank, the experiment tank and the recovery tank by gravity, the maintenance cost is minimized.

In addition, since the supply tank, the experimental tank and the recovery tank are stacked, the experimental space is minimized and the space utilization is maximized.

In addition, by introducing the selected marine organisms into the supply tank or the experimental supply pipe, it is possible to easily inject the selected marine organisms into the experimental tank.

1 is an exemplary diagram of a simulated mesocosm for experimenting with natural recovery ability of an oil contaminated sediment of one embodiment of the present invention;

FIG. 2 is an exemplary view of an experimental tank provided in a simulated mesocosm for testing the natural recovery ability of the oil contaminated sediment of FIG.

FIG. 3 is an exemplary diagram of simulated mesocosm experimenting with the natural recovery ability of the oil contaminated sediment of FIG.

4 is a block diagram showing a relationship between a control circuit unit and a solenoid valve provided in a simulated mesocosm for experimenting with the natural recovery ability of the oil contaminated sediment of FIG.

FIG. 5 is an exemplary view of a hydraulic pressure reducing device provided in a simulated mesocosm for experimenting with natural recovery ability of the oil-contaminated sediment of FIG. 1.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Before describing the present invention in detail, the terms or words used in the present specification should not be construed as being limited to ordinary or dictionary meanings, and in order for the inventor of the present invention to explain his invention in the best way. Concepts of various terms may be properly defined and used, and furthermore, it is to be understood that these terms or words should be interpreted as meanings and concepts corresponding to the technical spirit of the present invention.

In other words, the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting the teachings of the invention. It should be understood that the term is defined in consideration.

In addition, in the present specification, the singular expressions may include the plural expressions unless the context clearly indicates otherwise, and similarly, the plural expressions may include the singular meanings. do.

Throughout this specification, when a component is described as "comprising" another component, the component may further include any other component rather than excluding any other component unless otherwise stated. It can mean that you can.

Furthermore, if a component is described as being "inside, or in connection with," another component, the component may be directly connected or installed in contact with another component, The components may be spaced apart from each other, and in the case of spaced apart from each other, there may be a third component or means for fixing or connecting the components to other components. It should be understood that the description of the components or means of 3 may be omitted.

On the other hand, if a component is described as being "directly connected" or "directly connected" to another component, it should be understood that no third component or means exists.

Similarly, other expressions describing the relationship between each component, such as "between" and "immediately between", or "neighboring to" and "directly neighboring to", have the same purpose. Should be interpreted as

In addition, in this specification, terms such as “one side”, “other side”, “one side”, “other side”, “first”, “second”, and the like, if used, refer to this one component for one component. Is used to clearly distinguish from other components, and it should be understood that such terms do not limit the meaning of the components.

In addition, terms related to positions such as “up”, “down”, “left”, “right”, etc., when used herein, should be understood to indicate relative positions in the corresponding drawings with respect to the corresponding components, if used. Unless an absolute position is specified with respect to these positions, these position related terms should not be understood as referring to an absolute position.

Furthermore, in the specification of the present invention, the terms "~ part", "~ device", "module", "device" and the like, if used, means a unit capable of processing one or more functions or operations, which is hardware Or software, or a combination of hardware and software.

In addition, in the present specification, in designating the reference numerals for each component of each drawing, the same reference numerals refer to the same components so as to have the same reference numerals even though they are shown in different drawings, that is, the same reference numerals throughout the specification. The symbols indicate the same components.

In the accompanying drawings, the size, position, coupling relationship, etc. of each component constituting the present invention may be partially exaggerated or reduced or omitted in order to sufficiently convey the spirit of the present invention or for convenience of description. It may be described, so the proportion or scale may not be exact.

In addition, in the following, in the following description of the present invention, detailed descriptions of configurations known to unnecessarily obscure the subject matter of the present invention, for example, known technologies including the prior art, may be omitted.

As shown in Figures 1 to 5, the simulated mesocosm for testing the natural recovery ability of the oil-contaminated sediment of one embodiment of the present invention, the experimental tank 100 containing the marine sediment, and a predetermined amount of sea water at a predetermined time It includes a piping structure 200 to flow into the experimental tank 100, the supply tank 300 is located above the experimental tank 100 so that the sea water is moved by gravity, the recovery tank is located below the experimental tank (100) Characterized in that 400 is located.

Experiment tank 100 is made of a transparent acrylic or transparent glass that can be seen from the outside of the inside, it is preferable that a cold temperature device that can adjust the internal temperature is provided. In addition, one side of the experimental tank 100 is provided with a skylight or an optical device capable of supplying natural light or light similar to natural light into the experimental tank 100.

The piping structure 200 is made of stainless steel or plastic so that rust is not generated by seawater, and a filter or the like may be mounted at a selected position as necessary.

The supply water tank 300 is provided with a cold temperature control device for controlling the temperature of the sea water, the recovery water tank 400, a filter for separating organic or inorganic suspended solids and marine organisms contained in the recovered sea water from the sea water, and the recovered A purifier is provided for injecting oxygen or chemicals to purify seawater.

In one embodiment of the present invention, the supply tank 300 and the recovery tank 400, the water tank made of synthetic resin is utilized, the ball tower is installed inside the supply tank (300). According to the change in the height of the ball tower, the seawater supply is adjusted so that the seawater does not overflow in the supply tank 300. In addition, the ball tower is installed inside the recovery tank 400, the water level of the recovery tank 400 by the ball tower is known around.

The supply water tank 300 and the recovery water tank 400 are covered with a water tank lid so as to prevent foreign substances from entering.

In addition, one embodiment of the present invention, the supply tank 300, the experimental tank 100 and the recovery tank 400 includes an outer frame 500 is mounted vertically.

The outer frame 500 includes a lower space frame 510 formed to accommodate the recovery water tank 400, an experiment space frame 520 formed to accommodate the experiment water tank 100 above the lower space frame 510, and an experiment. It includes an upper space frame 530 is formed so that the supply tank 300 is mounted on the space frame 520. The outer frame 500 is preferably manufactured in the form of an iron structure to which an iron beam is connected.

Experiment tank 100 of the same size may be arranged at equal intervals in the experimental space frame 520 of the outer frame 500, in one embodiment of the present invention, having the same volume as the volume of the experimental space frame 520 Experiment tank 100 is mounted to the experiment space frame (520).

The test tank 100 includes a vertical diaphragm 110 mounted therein to partition the inside of the test tank 100 into a plurality of test spaces 101.

Since the experimental tank 100 is partitioned by the vertical diaphragm 110, a plurality of experimental spaces 101 may be secured.

In addition, the experimental tank 100 includes a horizontal diaphragm 120 is built to be horizontal to the bottom surface of the experimental tank (100).

The vertical diaphragm 110 and the horizontal diaphragm 120 are made of the same material as the experimental water tank 100, it is preferable that the rubber is provided at the end as a sealing material.

In the horizontal diaphragm 120, a plurality of perforations 121 are vertically formed. Control means for controlling the opening and closing of the perforation 121 may be provided on the bottom of the horizontal diaphragm 120.

The control means, a plurality of guides provided on the bottom surface of the horizontal diaphragm 120, a plurality of control membranes for selectively opening and closing any one of the plurality of perforations 121, and supplying a moving force to the control membrane It may include a power unit.

The mesh net 130 is seated on the horizontal diaphragm 120 to cover the perforations 121. Sediment deposited on the horizontal diaphragm 120 by the mesh net 130 is prevented from being separated from the horizontal diaphragm 120 through the perforation 121 by the seawater flow.

At the end of the horizontal diaphragm 120, a handle 122 is formed to protrude. As the handle 122 is provided, the horizontal diaphragm 120 can be easily separated from the test tank 100, thereby making it easy to clean the test tank 100.

A plurality of diaphragm support pillars 140 are provided at the bottom of the test tank 100 so that the horizontal diaphragm 120 is not in close contact with the bottom surface of the test tank 100. The diaphragm support pillar 140 is preferably made of plastic or rubber.

The bottom surface of the experiment tank 100 is formed with a drain port 150 in communication with the recovery tank (400). Drain port 150 is preferably formed on the bottom surface of the experimental water tank 100, it is preferable that a control valve for controlling the discharge of sea water is provided.

In order to be located at a height lower than the horizontal diaphragm 120, the water collecting port 160 is formed on the side of the experimental tank (100). A plurality of water collectors 160 are provided to collect the test water from the plurality of experiment spaces 101 partitioned by the vertical diaphragm 110. The water inlet 160 is provided with a valve, and the test water can be collected very simply by operating the valve.

The piping structure 200 includes an external supply pipe for introducing external seawater into the supply water tank 300, an experimental supply pipe 210 extending from the supply water tank 300 to the upper portion of the experimental water tank 100, and the experimental water tank 100. It includes a recovery supply pipe 220 extending from the bottom to the recovery tank 400.

As described above, the external supply pipe, the experimental supply pipe 210 and the recovery supply pipe 220 are preferably made of stainless or plastic so that rust is not generated by seawater.

The experiment supply pipe 210 includes a solenoid valve 221 provided in the experiment supply pipe 210 and a control circuit unit 222 provided at one side of the solenoid valve 221 to operate the solenoid valve 221 at a predetermined time. do.

The control circuit unit 222 may include an input unit 223 for receiving a signal from an external computer or generating a signal by an external operation, and a power applying unit 224 for applying electric power to the solenoid valve 221 based on the signal. Include.

The experimental supply pipe 210 includes a pressure reduction device 230 for minimizing the diameter of seawater falling toward the bottom surface of the experimental water tank 100.

The water pressure of the sea water moving from the supply tank 300 to the experiment tank 100 by the hydraulic pressure reduction device 230 is minimized.

As the hydraulic pressure reducing device 230, the fallopian tube body 231 is mounted to be expanded to the test supply pipe 210, and the perforated plate 232 may be provided at the end of the fallopian tube body 231. Alternatively, the pressure reducing device 230 may be provided with a pressure reducing valve 233 at the end of the experimental supply pipe 210.

In addition, a biological additional injection hole into which the selected marine life is injected into the experimental supply pipe 210 may be provided. The biological additional inlet is preferably formed between the experimental water tank 100 and the solenoid valve 221. Alternatively, marine life may be additionally injected into the supply tank 300.

The recovery supply pipe 220 may be manufactured to form a multi joint through a bearing to have a degree of freedom.

The recovery supply pipe 220 extending from the experiment tank 100 is preferably connected to the U-shaped or n-shaped joint a plurality of times.

When the n-shaped joint is rotated based on the bearings provided at both ends in the longitudinal direction, the n-shaped joint may be higher or lower than the height of the seawater present in the experimental tank 100.

That is, as the n-shaped joint is rotated based on the bearings present at both ends of the n-shaped joint in the longitudinal direction, the amount of seawater discharged from the experimental water tank 100 and the elapsed time of discharging the seawater can be arbitrarily adjusted.

In addition, since the fine deposits contained in the seawater is collected in the U-joint, it is possible to easily solve the clogging of the recovery supply pipe (220).

According to the simulation mesocosm for testing the natural recovery ability of the oil-contaminated sediment of the embodiment of the present invention configured as described above, the oil-contaminated sediment is accommodated in the test tank 100, and a predetermined amount of seawater is tested for a predetermined time. Since it is supplied to the water tank 100, the natural recovery capacity of the sediment by the ebb and high tide is simulated.

Since the mesocosm is simulated indoors, manpower and cost are minimized, and as the experimental tank 100 is manufactured in a sealed structure, it is possible to control the amount and type of marine organisms included in the sediment, and various environmental variables such as ambient temperature. Can be changed according to the experimental intention.

Therefore, it is possible to solve the disadvantages of the conventional mesocosism that was performed outdoors, and in particular, it is possible to significantly increase the accuracy and reliability of the experiment.

In addition, since the environmental variables are controlled, the accuracy and reliability of the experiment can be increased as compared to the outdoor test through the conventional mesocosm.

In particular, the low tide and the high tide can be implemented in the laboratory, it is possible to obtain the results of the natural recovery ability of the oil-contaminated sediment generated by the low tide and high tide, which is very accurate and reliable.

In addition, it is possible to supply or drain seawater to the experimental water tank 100 at a certain time every day.

In addition, the experiment tank 100 may be introduced into the same amount of seawater into the plurality of experiment space 101 formed by dividing the partition wall.

In addition, since the mesh net 130 is provided on the horizontal bulkhead, the drain hole 150 is not blocked by the deposit.

In addition, since the handle 122 is provided on the horizontal bulkhead, it is easy to separate the horizontal bulkhead from the test tank 100, and thus, the cleaning of the test tank 100 is simplified.

In addition, since the water collecting port 160 is located at a position lower than the horizontal bulkhead, it is easy to collect the test water.

In particular, since the number of experiments can be collected from the bottom of each experimental space 101 partitioned by the partition wall, it is possible to easily grasp the change in seawater according to the experimental conditions.

In addition, by providing a plurality of mesh net 130, by changing the height of the recovery supply pipe 220, or by providing a valve in the recovery supply pipe 220, the elapsed time to discharge all the sea water from the experimental water tank 100 to arbitrary Can be adjusted.

In addition, by manufacturing the recovery supply pipe 220 in the U-shape or n-shape, backwater of the seawater discharged from the experimental water tank 100 is prevented.

In addition, since fine deposits contained in the seawater are collected in the portion formed in the letter U of the recovery supply pipe 220, clogging of the recovery supply pipe 220 can be easily solved.

In addition, when the inside of the test tank 100 is blocked from the external environment, since the movement of microorganisms or marine organisms contained in the sediment is essentially blocked, the reliability and accuracy of the test is further improved.

In addition, a plurality of experiment spaces 101 can be secured by the vertical bulkhead.

In addition, since the seawater is moved to the supply tank 300, the experiment tank 100 and the recovery tank 400 by gravity, the maintenance cost is minimized.

In addition, since the supply water tank 300, the experimental water tank 100 and the recovery water tank 400 are stacked, the experimental space is minimized and the space utilization is maximized.

In addition, by introducing the selected marine organisms into the supply tank 300 or the experimental supply pipe 210, it is possible to easily inject the selected marine organisms into the experimental tank (100).

While various embodiments of the present invention have been described with reference to some examples, the descriptions of the various embodiments described in the "Specific Embodiments of the Invention" section are merely illustrative, and the present invention has been described. Those skilled in the art will understand from the above description that the present invention can be variously modified or implemented in accordance with the present invention.

In addition, the present invention is not limited by the above description because it can be implemented in a variety of other forms, the above description is intended to complete the disclosure of the present invention is usually in the technical field to which the present invention belongs It should be understood that the present invention is provided only to fully convey the scope of the present invention to those skilled in the art, and the present invention is defined only by the claims of the claims.

According to the present invention, sediments contaminated with oil are accommodated in the experimental tank, and a predetermined amount of seawater is supplied to the experimental tank for a predetermined time, thereby simulating the natural recovery ability of the sediment by the low tide and the high tide.

Since the mesopism is simulated indoors, manpower and cost are minimized. As the experimental tank is made in a closed structure, it is possible to control the amount and type of marine organisms included in the sediment, and to test various environmental variables such as ambient temperature. Can be changed according to.

Therefore, it is possible to solve the disadvantages of the conventional mesocosism that was performed outdoors, and in particular, it is possible to significantly increase the accuracy and reliability of the experiment.

In addition, since the environmental variables are controlled, the accuracy and reliability of the experiment can be increased as compared to the outdoor test through the conventional mesocosm.

In addition, it is possible to supply or drain seawater to the experimental tank at a certain time every day.

In addition, the experimental tank can be introduced into the same amount of seawater into a plurality of experimental space formed by dividing the partition wall.

In addition, since the mesh is provided in the horizontal bulkhead, the drain hole is not blocked by the deposit.

In addition, since the handle is provided on the horizontal bulkhead, it is easy to separate the horizontal bulkhead from the test tank, thereby simplifying the cleaning of the test tank.

In addition, since the water collecting port is located at a position lower than the horizontal bulkhead, it is easy to collect the test water.

In particular, since the number of experiments can be collected at the bottom of each experimental space partitioned by the partition, it is easy to grasp the change in seawater according to the experimental conditions.

In addition, by providing a plurality of mesh nets, changing the height of the recovery supply pipe, or by providing a valve in the recovery supply pipe, it is possible to arbitrarily adjust the elapsed time from which all the seawater is discharged from the experimental water tank.

In addition, by manufacturing the recovery supply pipe in the U-shape or n-shape, backwater of the seawater discharged from the experimental water tank is prevented.

In addition, since fine deposits contained in the sea water are collected in the portion formed in the U shape of the recovery supply pipe, it is possible to easily solve the blockage of the recovery supply pipe.

In addition, when the inside of the experimental tank is blocked from the external environment, the movement of microorganisms or marine organisms contained in the sediment is essentially blocked, thereby improving the reliability and accuracy of the experiment.

In addition, a plurality of experimental spaces can be secured by the vertical bulkhead.

In addition, since the seawater is moved to the supply tank, the experiment tank and the recovery tank by gravity, the maintenance cost is minimized.

In addition, since the supply tank, the experimental tank and the recovery tank are stacked, the experimental space is minimized and the space utilization is maximized.

In addition, by introducing the selected marine organisms into the supply tank or the experimental supply pipe, it is possible to easily inject the selected marine organisms into the experimental tank.

Claims (15)

Experimental tanks containing marine sediments; It includes a pipe structure for introducing a predetermined amount of sea water into the experimental tank at a predetermined time, A simulated mesocosm for experimenting with natural recovery of oil-contaminated sediments, wherein a supply tank is positioned above the experimental tank so that sea water is moved by gravity, and a recovery tank is located below the experimental tank. The method of claim 1, A lower space frame formed to accommodate the recovery tank; An experiment space frame formed to accommodate the experiment tank on the lower space frame, It further includes an outer frame provided with an upper space frame formed so that the supply tank is seated on the upper side of the experimental space frame, The outer frame, A simulated mesocosm that tests the natural resilience of oil-contaminated sediments, which are steel structures connected by steel beams. The method of claim 1, The experimental tank, Simulation mesocosm for experimenting the natural recovery capacity of the oil-contaminated sediment, including a vertical septum mounted therein for partitioning the interior of the experimental tank into a plurality of experimental spaces. The method of claim 1, The experimental tank, Simulation mesocosm for experimenting with the natural recovery ability of the oil-contaminated sediment, including a horizontal diaphragm built in parallel to the bottom of the experimental tank. The method of claim 4, wherein A plurality of perforations are formed in the horizontal diaphragm, Mesh net is seated on the horizontal diaphragm to cover the perforation, In order to prevent the horizontal diaphragm from coming into close contact with the bottom of the experimental tank, a plurality of diaphragm support pillars are provided at the bottom of the experimental tank, Simulation mesocosm for experimenting with the natural recovery ability of the oil-contaminated sediment, the handle protruding in the horizontal diaphragm end. The method of claim 4, wherein A drain hole is formed on the bottom surface of the test tank in communication with the recovery tank, Simulation mesocosm experimenting with the natural recovery capacity of the oil-contaminated sediment, in which a drain is formed on the side of the experimental tank so as to have a lower height than the horizontal diaphragm. The method of claim 1, The piping structure, An experimental supply pipe extending from the supply tank to the upper part of the experimental tank; A simulated mesocosm for testing the natural recovery ability of the oil-contaminated sediment, including; a recovery supply pipe extending from the bottom surface of the experimental tank to the recovery tank. The method of claim 7, wherein The experimental supply pipe, A solenoid valve provided at the test supply pipe; Simulated mesocosm for experimenting the natural recovery ability of the oil-contaminated sediment, including a control circuit provided on one side of the solenoid valve to operate the solenoid valve at a predetermined time. The method of claim 8, The control circuit unit, An input unit for receiving a signal from an external computer or generating a signal by an external operation; A simulation mesocosm for experimenting with the natural recovery ability of the oil-contaminated sediment comprising a power applying unit for applying electric power to the solenoid valve based on the signal. The method of claim 7, wherein The experimental supply pipe, Simulation mesocosm for experimenting the natural recovery capacity of the oil-contaminated sediment, including a hydraulic pressure reducing device for minimizing the diameter of the sea water falling toward the bottom of the experimental tank. The method of claim 10, The hydraulic pressure reducing device, A trumpet tube mounted to the test supply pipe; Simulation mesocosm for experimenting the natural recovery ability of the oil-contaminated sediment, including a porous plate provided at the end of the fallopian tube. The method of claim 10, The hydraulic pressure reducing device, Simulation mesocosm for experimenting the natural recovery capacity of the oil contaminated sediment, which is a pressure reducing valve provided at the end of the experimental supply pipe. In the simulation mesocosism implemented indoors, To allow seawater to flow into or out of the experimental tank containing the marine sediments by gravity, The supply tank is located above the experimental tank, A simulated mesocosm for testing the natural recovery ability of oil contaminated sediment, the recovery tank is located below the experimental tank. The method of claim 13, A simulation mesocosm for experimenting the natural recovery capacity of oil contaminated sediment between the supply tank, the experimental tank and the recovery tank, which is provided with a piping structure in which a predetermined amount of sea water is introduced into or discharged from the experimental tank. . The method of claim 14, A simulated mesocosm for testing the natural recovery capacity of the oil-contaminated sediment provided with a hydraulic pressure reducing device in the piping structure so as to minimize the pressure of the seawater moving from the supply tank to the experimental tank.

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