JP2003126851A - Apparatus for separating/removing oil-water - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an apparatus for separating and removing oil-water capable of returning fully purified, treated water to the very site, by treating at a low cost the oil content in the oil-water below the standard value set for wastewater at an accident site. SOLUTION: The oil-water separating and removing apparatus 1 comprises a float pump 5, a resistor plate 2b, an oil skimmer 2c, hydraulic pressure dispersing strainers 2e, 2h, an oil adsorbing filter 3, a floating-oil separation-recovery device 2 having a discharge port for the treated water and an oil-in-water content removal device 4, in a single housing. The float pump 5 removes refuse contained in the oil-water and pumps up the oily water near the surface. The resistor plate 2b controls the velocity of flow of the oil-water, and the oil skimmer 2c recovers the oil content floating onto the floating-oil separating tank 2a. The hydraulic pressure dispersing strainers 2e, 2h draw the oil-water from the floating-oil separating tank 2a by siphons 2d, 2g and controls the oil-water flow in its velocity so as to enter the floating-oil separating tanks 2f, 2i while preventing the oil content from reaching the bottom. The oil adsorbing filter 3 adsorbs the oil content remaining as oil film. The aqueous oil removal device 4, after the oil content remaining in the oil-water is flocked using a flocculant and a coagulant, recovers and discharges the treated water.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention separates and collects oil that has spread to seawater, lakes and marshes due to an accident at the accident site.
The present invention relates to an oil / water separation / removal device that removes and purifies oil content in oil / water to a standard that satisfies the wastewater standard value of the Water Pollution Control Law.

[0002]

2. Description of the Related Art Conventionally, most of the removal of polluted seawater and oil from lakes and marshes and the cleaning of oily water in oil-water separation tanks stipulated by the Fire Service Act use vacuum or float suction of oil-containing water. Oil-impregnated water collected and transferred to land for processing, sea areas where oil spreads are surrounded by an oil fence, and oil is adsorbed using an adsorption mat, and a neutralizer is sprayed on the oil-water surface to disperse oil. Adsorption method was adopted.

In addition, a chemical treatment method for treating oil in oil-water as flocs by using a chemical, and Japanese Patent Laid-Open No. 6-242242
There is also known an oil-water separation device for treating oil-containing water by a physical treatment method of removing oil by passing through a filter such as a perforated plate or glass wool, as in the invention described in JP-10334.

[0004]

However, when the oil is spread over a wide sea area due to an accident or the like, the method of recovering the oil-containing water and transferring it to the land for treatment requires a huge cost. Further, the method of enclosing the sea area where the oil spreads with an oil fence and spraying a neutralizing agent to remove the oil component also requires a huge amount of time and cost, and is not a realistic treatment method.

In particular, in a chemical treatment method in which chemicals are treated as flocs, it is difficult to handle the amount and method of use of the chemicals. It cannot be said that it will not affect. Even when the oil floating on the water surface is emulsified with a neutralizing agent, the emulsifier and the emulsified oil are not biodegraded by photooxidation or seafood, and the oil treatment agent remains after the treatment. It cannot be said that it will not become a pollution source again, and there is concern about its impact on the environment.

Further, in the conventional physical treatment method using a filter such as a perforated plate, a fine oil film remains on the water surface even after the oil is removed, and it is difficult to completely clarify the seawater. It was

Therefore, the present invention was devised in view of the various circumstances described above, and in an oil leak accident site, the processing amount is reduced to reduce the processing cost, and the oil content in the oil water is completely harmless. It is an object of the present invention to provide an oil / water separation / removal device capable of treating oil water up to a prescribed drainage standard value or less and returning the treated water to the site without removing even a fine oil film. .

[0008]

In order to solve the above-mentioned technical problems, the means of the invention described in claim 1 is an oil-water separation / removal device for separating, recovering and removing oil in oil-containing wastewater. A float pump that removes oil and draws only the oil near the surface with a lot of oil, a baffle plate that controls the flow rate of the oil so that the oil that floats on the surface of the oil that has been pumped does not reach the bottom, and an oil skimmer that collects the oil that floats The first floating oil separation tank, the siphon that pumps oil water from the floating oil separation tank, and the second and third floating machines that are equipped with a hydraulic pressure dispersion strainer that controls the flow velocity so that the oil content in the pumped oil water does not concentrate and drop to the bottom. An oil adsorption filter that uses a porous adsorbent made of activated carbon to adsorb oil that may be contained in the oil separation tank or the third floating oil separation tank. A floating oil separation and recovery device provided with a discharge port for discharging treated water that has absorbed oil, and a plant-based cleaning agent that emulsifies the oil remaining in the oil in the floating oil separation tank by the effect of micelles, , A floc that mixes by adding a flocculant mainly composed of an extract extracted from plants such as edible seaweed that flocculates the emulsified oil and a coagulant mainly composed of a cationic food additive, floc Bag filter that collects the converted oil,
An underwater oil removing device provided with a discharge port for discharging treated water from which flocked oil has been removed is installed in one housing and can be mounted on a moving object of a ship, a vehicle or a train.

A float pump pumps up only the oily water stored in the oily water separation tank stipulated by the Fire Service Law, the oily water near the surface with a lot of oil such as seawater containing oil due to an oil leak accident,
The amount of oil and water to be treated is reduced as much as possible to reduce the treatment cost. Further, dust and the like are removed from the oil water in advance so that the dust and the like do not hinder the flow of the oil water.

The flow rate of the oil water is controlled by the baffle so that the oil content in the oil water does not reach the bottom directly, and the oil water flows into the first floating oil separation tank, and due to the difference in specific gravity between the water content and the oil content, the oil content is reduced. Is promoted, and the oil content floats and separates on the oil-water surface. The floating oil is collected by an oil skimmer and removed from the oil water.

Next, the oil water from which the oil content has been removed by the oil skimmer is pumped up from the first floating oil separation tank by a siphon, and the flow velocity is controlled by a water pressure dispersion strainer so that the oil water does not drop intensively to the bottom. It flows into the floating oil separation tank of and makes it easy to float and separate fine oil content as an oil film. Then, oil water is circulated from the second floating oil separation tank to the third floating oil separation tank, and the same operation is repeated.

In this way, in the unlikely event that the same operation is repeated from the first floating oil separation tank to the second floating oil separation tank and from the second floating oil separation tank to the third floating oil separation tank. This is also to prevent the oil from reaching the third floating oil separation tank, which is the final tank.By repeating this operation, even the extremely fine oil in the oil water may differ due to the difference in specific gravity from the water content. , As an oil film, completely floats and separates on the upper surface of oil water.

The oil film floated and separated from the oil water is passed along with the oil water to an oil adsorption filter using a porous adsorbent made of activated carbon, and even a fine oil film of several micron unit which is difficult to remove is oil adsorption filter. Adsorbs and removes the oil and cleans oil and water to below the specified drainage standard value.
The clear treated water with no oil film left is discharged to the site from the floating oil separation / collection device.

The oil component which is not floated and separated by the floating oil separation and recovery device and remains in the oil water is re-emulsified with the plant-based detergent to form stable micelles in the oil-in-water removal device, and is further edible. After flocculating by adding a coagulant mainly composed of an extract extracted from plants such as seaweed and a cationic food additive,
The oil content is completely removed from the oil water, and the treated water that has been completely clarified to below the specified discharge standard value is discharged from the oil-in-water removal device to the site.

Since all of the cleaning agent, coagulant and coagulant are natural products which do not affect the environment, the flocculated oil can be safely disposed and removed as harmless solids.

A means for connecting and circulating the floating oil separating and collecting device and the in-water oil removing device is provided, and the oil remaining in the floating oil separating tank without being floated is cleaned by the in-water oil removing device. , Reused as initial filling water.

According to a second aspect of the present invention, the oil adsorption filter comprises a porous water-flow dispersion plate for dispersing oil and water, a porous adsorbent made of activated carbon located downstream of the water-flow dispersion plate, and the adsorption. And an adsorbent outflow prevention filter that does not allow the oil absorbed by the adsorbent located downstream of the material to flow out.

The oil that has been floated and separated as a fine oil film of a few microns is dispersed by a porous water flow distribution plate to prevent the oil water from being concentrated and distributed at one place, and the adsorbent made of activated carbon is almost It evenly distributes and adsorbs and removes fine oil film that is difficult to remove, and releases clean treated water without oil film remaining to the site.

According to the invention of claim 3, claim 1
Alternatively, in addition to the configuration of the invention described in 2, a floating oil separation / collection device in which the first, second and third floating oil separation tanks are mounted in an L shape, and an in-water oil removal device in the floating oil separation / collection device It is in that it was installed nearby.

The first, second, and third floating oil separation tanks are placed in an L-shape instead of in series, and the oil-in-water removal device is installed near the floating oil separation device, thereby removing the oil-water separation device. The area required for installation is minimized, making it easy to install in vehicles and ships.

[0021]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is an explanatory diagram showing a schematic configuration of an oil / water separation / removal device.

As shown in FIG. 1, an oil / water separation / removal device 1
Is a floating oil separation / collection device 2 that floats and removes the oil component having a low specific gravity in the oil water, and an in-water oil component that finally removes the oil component that does not float and remains in the oil water as a harmless solid substance. And device 4.

FIG. 2 shows a case where a floating oil is drawn by pumping up the oil water stored for cleaning the oil-water separation tank specified by the Fire Service Act and the oil water near the surface of the oil water that spreads in seawater due to an oil leak accident. It is a figure which shows the schematic structure of the float pump 5 made to flow into the 1st floating oil separation tank 2a of the separation collection apparatus 2, (a) is a top view of the float pump 5, (b) is a side surface of the float pump 5. It is a figure.

As shown in FIG. 2, the float pump 5 is
Float part 5 for holding the float pump 5 in oil-containing wastewater
a, a suction port 5d for sucking oily water on the surface by a pump drive, a large mesh net 5b for removing coarse dust arranged around the suction port 5d, and an inside of the dust net 5b. It is composed of a dust net 5c arranged around the suction port 5d for removing fine dust.

The oil-containing wastewater stored in the oil-water separation tank 6 stipulated by the Fire Service Law is debris-removed by the debris nets 5c and 5d, and only the oil-water on the surface of the oil-containing wastewater containing a lot of oil is pumped up by the float pump 5. And flows into the first floating oil separation tank 2a.

As described above, since the dust in the oil water is removed in advance, the floating oil separating and collecting apparatus 2 can efficiently perform the work without the dust blocking the flow of the oil water.

Further, even when oil spreads to seawater due to an accident, since only the oil water on the oil-containing drainage surface with a large amount of oil is pumped up by the float pump 5 and processed, the amount of oil water to be processed is reduced and the processing cost is reduced. It can be reduced.

FIG. 3 is an enlarged view showing the floating oil separating and collecting apparatus 2. The first floating oil separation tank 2a includes a resistance plate 2b that is a baffle plate that controls the flow rate of the oil water pumped by the float pump 5, and an oil skimmer 2c that collects the floating oil component. Note that FIG. 4 is a perspective view showing a schematic configuration of the resistance plate 2b.

As shown in FIG. 4, the resistance plate 2b includes a fan-shaped flat plate 20 installed at a slight angle and a plurality of filters 21.
Is installed upright, the side part of this filter 21 is surrounded by a side plate 22, and the oil water pumped up by the float pump 5 is circulated on the resistance plate 2b and flows into the first floating oil separation tank 2a. ing.

The oil water pumped up by the float pump 5 hits the resistance plate 2b and the flow velocity is controlled so that the oil content in the oil water does not directly reach the bottom of the first floating oil separation tank 2a. Separation is facilitated.

The oil floating on the surface of the water is attached to the cylindrical oil skimmer 2c which rotates in the direction opposite to the inflow direction of the oil by utilizing the viscosity of the oil.
The oil content adhering to c is collected in the oil collection tank 2i.

Next, the oil-water having the floating oil content removed by the oil skimmer 2c is pumped up by a siphon 2d from the vicinity of the bottom of the first floating oil separation tank 2a, and the hydraulic dispersion strainer 2
The oil is passed through a suction filter of about 40 mesh (e) to control the flow rate of the oil water to prevent the oil content from being concentratedly dropped to the bottom portion, and is circulated to the second floating oil separation tank 2f. Here, the floating separation of the oil component in the oil water is promoted, and the oil component in the oil water floats and separates as an oil film on the upper part of the second floating oil separation tank 2f.

Similarly, oil water is pumped up from the vicinity of the bottom of the second floating oil separation tank 2f from which oil is floated and separated by using a siphon 2g, and the water is dispersed through a hydraulic pressure dispersion strainer 2h to make a third floating oil separation tank 2i. By repeating the operation of flowing into the third tank, the oil is prevented from reaching the third floating oil separation tank 2i, which is the final tank, and the extremely fine oil content in the oil water is completely removed due to the difference in specific gravity with water. It floats and separates on the upper surface of oil water as an oil film.

Next, the oil adsorption filter 3 for removing the oil film on the surface of the oil / water that has been floated and separated will be described.

FIG. 5 is a plan view showing a water flow distribution plate 3c used in the oil adsorption filter 3, and FIG. 6 is an explanatory view showing a schematic configuration of the oil adsorption filter 3.

As shown in FIG. 5, the water flow distribution plate 3c is a disk body having porosity.

Further, as shown in FIG. 6, the oil adsorption filter 3 includes a water dispersion plate 3 in a cylindrical case body 3b.
c is installed, the adsorbent 3d using activated carbon is filled in the downstream thereof, and further downstream, an adsorbent outflow prevention filter 3e, which is a polypropylene disc body that prevents the oil component adsorbed by the adsorbent 3d from flowing out. I am wearing it.

The adsorbent 3d is manufactured by Taniguchi Shokai Co., Ltd.
It uses violet, which is the seller, whose main raw material is activated carbon. Sumirei has a pore size of the adsorption material used for general oil adsorption mats (pore size of ordinary oil adsorption mats: 200 μm-600
The size is about 20 μm to 50 μm with a large diameter hole, and it is suitable for the adsorption of oil in the form of a thin film.

The oil adsorption filter 3 of this embodiment is equipped with two sets of a water flow dispersion plate 3c, an adsorbent 3d and an adsorbent outflow prevention filter 3e in the case body 3b. The case body 3b is preferably formed of a strong metal or the like so that the set can be replaced.

When the oil water having the oil film floating on the upper side is passed through the oil adsorption filter 3, the oil water collides with the water flow distribution plate 3c and is dispersed, and the oil water is evenly distributed in the adsorbent 3d to form the oil film. Adsorbed on the adsorbent 3d. The oil water flowing from the adsorbent outflow prevention filter 3e further flows through the second set of water flow distribution plate 3c, the adsorbent 3d, and the adsorbent outflow prevention filter 3e, and the oil film is completely adsorbed and removed from the oil water. .

Therefore, even if the oil is floated and separated on the oil-water surface as a fine oil film of a few micron unit which is difficult to remove, the oil film is adsorbed by the oil adsorption filter 3 and the specified drainage standard value is set. (Mineral oil 5ppm, vegetable oil 30pp
m) The oil content is removed up to and below, and clear treated water that leaves no oil film can be discharged to the site.

Next, the oil-in-water removing device 4 for removing the oil remaining in the oil water without causing the oil to float and separate due to the difference in specific gravity will be described.

As shown in FIG. 1, the oil-in-water removing device 4 includes a stirring tank 4b having a stirring device 4a, a hopper 4c for charging a coagulant B, and a liquid amount confirmation tank 4d for charging a coagulant C. Then, the bag filter 4f is arranged via the filtration pump 4e. In the figure, 4g is a tank for the coagulant C, and the coagulant C liquid is pumped from this tank 4g for 4h.
Then, the liquid amount is confirmed in the liquid amount confirmation tank 4d, and the liquid is confirmed and charged into the stirring tank 4b. In addition, reference numeral 4i in the drawing denotes a tank for the cleaning agent A, and an appropriate amount of the cleaning agent A is put into the stirring tank 4b by an appropriate amount pump 4j.

The cleaning agent A is a vegetable cleaning agent using an ion cleaning agent SNF-GF88 (trade name) manufactured by SNE Research Institute. The coagulant B is a powdery substance containing an extract extracted from a plant such as edible seaweed as a main component, and the coagulant C is a liquid mainly containing a cationic food additive. Both the flocculant B and the coagulant C use NBP-A and BC9-B (two sets are collectively referred to as Mikirosik) manufactured by Westec Co., Ltd. and sold by Shindou Co., Ltd.

In the floating oil separation / collection device 2, the oil / water in which the oil component having a low specific gravity is floated and separated flows from the floating oil separation tanks 2a, 2f, 2i into the agitation tank 4b of the oil-in-water removing device 4 through a pipe to wash Oil A is re-emulsified by adding agent A to make the oil remaining in the oil into stable micelles, and further coagulant B and coagulant C are added to completely flocculate the oil that becomes micelles. In addition, the flocculated oil content is removed by the bag filter 4f, and the completely clarified treated water without the oil content remaining can be re-released to the site from the discharge port of the oil-in-water removal device 4.

Further, since the cleaning agent A, the coagulant B and the coagulant C are all natural substances that do not affect the environment, the flocculated oil is safely disposed and removed as a harmless solid substance. be able to.

In the floating oil separation tanks 2a, 2f, 2i,
The oil content that has floated up can also be flocculated and removed by the oil-in-water removal device 4. That is, the filling water is supplied from the lower part of the floating oil separation tanks 2a, 2f, 2i, and the floating oil is pushed up to the upper parts of the floating oil separation tanks 2a, 2f, 2i, and is provided above the floating oil separation tanks 2a, 2f, 2i. The upper recovery pipe 7 flows into the agitation tank 4b of the oil-in-water removing device 4, and the oil is flocculated, recovered, and separated and discarded.

A circulating means is provided in which the floating oil separation / recovery device 2 and the underwater oil removing device 4 are connected by a pipe 7 via a flow valve, and the contaminated floating oil separation tanks 2a, 2f, 2i are filled with filled water. It is circulated to the oil-in-water removing device 4 through the pipe 8 through the flow valve and reused as clean initial filling water.

Next, FIG. 7 illustrates another embodiment of the oil / water separation / removal device 1. FIG. 7 is a plan view showing the oil / water separation / removal device 1 installed in the housing by connecting the floating oil separation / recovery device 2 and the in-water oil removal device 4 with a pipe 7.

As shown in FIG. 7, the oil / water separation / removal device 1
Installs the first, second and third floating oil separation tanks 2a, 2f, 2i of the floating oil separating and collecting apparatus 2 in an L-shape, and the first, second and second floating oil separating and collecting apparatus 2 are installed. The three floating oil separation tanks 2a, 2f, 2i are connected to the agitation tank 4b through a pipe 7 with a stirring tank 4b, and an oil-in-water removing device 4 is provided near the floating oil separating and collecting device 2 to compactly house the housing. It is installed in.

Therefore, the oil / water separation / removal device 1 can be easily mounted on a vehicle or a ship, and the oil / water separation / removal device 1 mounted on a vehicle or a ship can be used for accidents such as seawater and lakes contaminated by an accident. It is possible to carry and purify oil water to below the specified standard value of waste water at the site, and to return the clarified treated water with no oil film remaining to the site.

[0052]

Since the present invention has the above-mentioned structure, it has the following effects. The oil / water separation / removal device pumps up and processes oily water near the surface of oily water, so even if the oily water is spread over a wide area such as seawater, the amount of oily water to be processed is reduced to reduce the processing cost. It can be reduced.

The floating oil separation / recovery device of the oil / water separation / removal device floats and collects the oil component in the oil water due to the difference in specific gravity between the oil component and the moisture, and also removes the fine oil component in the oil water by floating and separating it as an oil film. To do. Even if oil that does not float as an oil film remains in the oil water, it is removed using an oil adsorption filter and the oil water is completely purified to below the specified drainage standard value. Clear treated water with no oil remaining can be returned to the site.

Further, the oil-in-water removing device of the oil-water separating device collects and removes the oil remaining in the oil-water which is not floated and separated by the floating oil-separating / recovering device, as a harmless solid substance, and completely removes it up to the prescribed standard value of wastewater. The clarified treated water can be returned to the site.

Since the oil / water separation / removal device can be compactly installed in the housing and can be easily mounted on a moving body such as a ship, the oil / water separation / removal device can be carried to an accident site, At an oil spill accident site, the oil content in oil water such as seawater is completely removed at low cost without affecting the environment, and the oil water is purified to below the specified drainage standard value, and also as an oil film. Completely clarified treated water with no oil residue can be re-released to the site.

[Brief description of drawings]

FIG. 1 is an explanatory diagram showing a schematic configuration of an oil / water separation and recovery apparatus showing an embodiment of the present invention.

FIG. 2A is a plan view showing a schematic configuration of a float pump, and FIG. 2B is a side view of the float pump.

FIG. 3 is an explanatory diagram showing a schematic configuration of a floating oil separation and recovery apparatus showing an embodiment of the present invention.

FIG. 4 is a perspective view showing a schematic configuration of a resistance plate.

FIG. 5 is a plan view showing a schematic configuration of a water flow dispersion plate used for an oil adsorption filter.

FIG. 6 is an explanatory diagram showing a schematic configuration of an oil adsorption filter.

FIG. 7 is an explanatory view showing a schematic configuration of an oil / water separation / removal device in which a floating oil separation / recovery device and an in-water oil removal device are connected by one line, showing another embodiment of the present invention.

[Explanation of symbols]

1; Oil water separation and removal device 2; Floating oil separation and recovery device 2a; Floating oil separation tank 2b; Resistance plate 2c; Oil skimmer 2d; Siphon 2e; Water pressure dispersion strainer 2f; Floating oil separation tank 2g; Siphon 2h; Water pressure dispersion strainer 2i; Floating oil separation tank 2j; Recovery tank 3; Oil adsorption filter 3a; Siphon 3b; Case body 3c; Water dispersion plate 3d; Adsorbent 3e; Adsorbent outflow prevention filter 4; Underwater oil removal device 4a; stirring device 4b; stirring tank 4c; Hopper 4d; Liquid volume confirmation tank 4e; Filtration pump 4f; Bag filter 4g; Coagulant C tank 4h; pump 4i; Cleaning agent A tank 4j; Appropriate amount pump 5; Float pump 5a; float part 5b; garbage screen 5c; garbage screen 5d; Suction port 6; Drainage bit 7; Upper recovery pipe 8; Pipe 20; Flat plate 21; Filter 22; Side plate

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁷ Identification code FI theme code (reference) B01D 17/022 503 B01D 17/022 503 17/025 504 17/025 504 17/028 17/028 Z 17 / 032 17/032 17/05 501 17/05 501G B63J 4/00 B63J 4/00 A C02F 1/28 C02F 1/28 H 1/52 1/52 F E03F 5/16 E03F 5/16 F term (reference) 2D063 DB08 4D015 BA12 DB31 DC07 EA35 FA01 FA11 4D024 AA05 AB06 BA02 BB01 BC01 CA07 DB03 DB08 DB21 4D051 AA01 AA06 AB02 AB07 BA03 BA08 BA10 DA02 DC02 DC20 DC20

Claims (3)

[Claims] 1. A float pump that removes dust and pumps only oily water near a surface that is rich in oil, a baffle plate that controls the flow rate of oily water so that the oily material that floats on the surface of the oily water that has been pumped does not reach the bottom, and the oily material that floats A first floating oil separation tank equipped with an oil skimmer for collecting oil, a siphon for pumping oil water from the floating oil separation tank, and a hydraulic pressure dispersion strainer for controlling the flow velocity so that the oil content in the pumped oil water would not be concentratedly dropped to the bottom. Oil adsorption that uses a porous adsorbent made of activated carbon to absorb oil that may be contained in the second and third floating oil separation tanks and the third floating oil separation tank A floating oil separation / collection device equipped with a filter and a discharge port for discharging treated water that has absorbed oil, and the oil remaining in the oil in the floating oil separation tank is removed by the effect of micelles. A flocculant-based cleaning agent, a flocculant mainly composed of an extract extracted from plants such as edible seaweeds that flocculates emulsified oil, and a coagulant mainly composed of a cationic food additive. Install a tank for mixing and mixing oil, a bag filter for collecting flocked oil, and an underwater oil removal device with a discharge port for discharging treated water from which flocked oil has been removed in one housing Oil and water separation and removal device that can be mounted on moving objects such as vehicles, trains, and trains. 2. An oil adsorption filter comprising a porous water-flow dispersion plate for dispersing oil and water, a porous adsorbent made of activated carbon located downstream of the water-flow dispersion plate, and a downstream of the adsorbent. The oil / water separation / removal device according to claim 1, comprising an adsorbent outflow prevention filter that does not allow the oil absorbed by the adsorbent to flow out. 3. The first, second and third floating oil separation tanks are set to L.
The oil / water separation / removal device according to claim 1 or 2, wherein a floating oil separation / recovery device placed in a V shape and an in-water oil removal device are provided near the floating oil separation / recovery device.