JP4261608B1 - Floating substance collection device and floating substance collection method - Google Patents

Abstract

Provided is a floating substance collecting apparatus capable of efficiently sucking a floating substance on a water surface while suppressing suction of water below the water surface to a small amount.
A floating substance suction device having a downward suction port for sucking a floating substance on the water surface by arranging a floating substance collecting device near the water surface, and a floating substance suction unit disposed below the suction port. The partition plate 20 for separating the water 70 near the water surface from the water 70 below the water surface so that the water 70 not near the water surface is not sucked into the suction port, and the partition plate 20 becomes substantially horizontal below the water surface. Thus, the buoyancy adjusting means 30 for adjusting the buoyancy acting on the partition plate 20 was provided.
[Selection] Figure 1

Description

  The present invention relates to a floating substance recovery device for recovering a floating substance such as various liquids and various solids floating on a water surface, and a floating substance recovery method using the floating substance recovery apparatus.

  2. Description of the Related Art Conventionally, a floating material collecting apparatus is known in which a floating material such as oil or dust floating on a water surface is collected, and the floating material is sucked by a suction pipe connected to a pump. This type of suspended matter collection device is used not only in natural water areas such as marsh lakes and rivers, but also in various places such as water storage tanks, water ditches, and ship ballast tanks in factories and water treatment facilities. Various types of floating substance recovery apparatuses have been proposed depending on applications.

  For example, a suspended matter collecting device in a form in which the suction port of the suction pipe is arranged upward at a place where the surface of the water is slightly below the surface of the water (hereinafter, the suspended matter collecting device in this form is referred to as a “suction port upward type floating matter collecting device”). Have been proposed (see, for example, Patent Document 1 and Patent Document 2). Thereby, it becomes possible to suck the suspended matter on the water surface together with the water nearby.

  In the floating-portion recovery device of the suction port upward type, the vicinity of the suction port of the suction tube is usually connected to a float. For this reason, even when the water level changes, the suction port periphery of the suction tube moves up and down following the float, and the depth from the water surface to the suction port is kept substantially constant. It is like that.

  The suction port upward type floating substance collection device has a possibility of collecting a large amount of floating substance, and it was expected to increase further in the future, but has the following disadvantages. It was.

  That is, in the suction port upward type floating substance collection device, if the water depth of the suction port is excessively deep, only the water below the water surface is sucked and the floating substance may be hardly sucked. On the other hand, if the water depth at the suction port is made too shallow, only the air on the water surface is sucked, and there is a possibility that the suspended matter is hardly sucked.

  As described above, in the floating-portion recovery device of the suction port upward type, it is not always easy to efficiently collect the floating material because the setting range of the water depth of the suction port where only the floating material can be suitably sucked is narrow. It was. Therefore, in practice, the suction port is set slightly deep, and the suspended matter is often sucked together with the water below the surface of the water. Therefore, the pump connected to the suction pipe is required to have a large processing capacity, and the suspended matter recovery apparatus tends to be uneconomical.

  In view of such a situation, until now, a suspended matter collecting apparatus (hereinafter referred to as a suspended matter collecting device of this form) in which the suspended matter on the water surface is sucked by a suction port arranged downward and above the water surface. An apparatus is also referred to as “a suction port downward type floating substance recovery apparatus”) (see, for example, Patent Document 3 and Patent Document 4). Connecting the periphery of the suction port of the suction tube to the float is the same as that of the floating-portion recovery device of the suction port upward type.

  The suction port downward type floating substance collection device can suck floating substance on the water surface with little suction of water below the water surface, and can select a pump with low processing capacity connected to the suction pipe etc. However, it had the following drawbacks.

  That is, in the floating-portion recovery device of the suction port downward type, if the height from the water surface to the suction port is raised, the water below the water surface becomes difficult to be sucked. There was also a risk that the collection efficiency of the suspended matter would be reduced. On the other hand, if the distance from the water surface to the suction port is too low, there is a risk that not only suspended matter on the water surface but also water below the water surface will be sucked in a large amount.

  Thus, even in the suction port upward type floating substance collection device, since the set range of the height from the water surface to the suction port where only the floating substance can be suitably sucked is narrow, it is possible to efficiently collect the floating substance. It was not always easy.

JP 52-075861 A Japanese Utility Model Publication No. 56-172389 Japanese Utility Model Publication No. 49-087268 JP 2000-176450 A

  The present invention has been made to solve the above-described problems, and provides a floating substance recovery device that can efficiently suck floating substances on the water surface while suppressing suction of water below the water surface to a small amount. To do. It is also an object of the present invention to provide a suspended matter recovery method using this suspended matter recovery apparatus.

The above-mentioned problems are: (1) a floating substance suction means having a downward suction port for sucking a floating substance on the water surface by bringing it into contact with the water surface; and (2) near the water surface which is arranged below the suction port. A partition plate for separating the water near the water surface and the water below the water so that the water not present in the suction port is not sucked into the suction port; and (3) the partition plate is substantially horizontal at a desired depth below the water surface. Do Ri, and the suction port is a suspended matter recovery device and a buoyancy adjusting means for adjusting the buoyancy acting on the partition plate so that to contact the water surface, the normal of the upper surface of the partition plate the inclination angle theta ₁ of the suction direction of the suction port is set to 0.5 to 10 ° relative to, suspended matter recovery device is characterized in that as the suction port can be contacted in an inclined surface of the water Solved by providing.

  Thus, since the partition plate can separate the water near the water surface and the water below it, only the water near the water surface can be efficiently sucked into the suction port. At this time, if floating matter on the upper surface of the partition plate is sucked into the suction port together with water near the water surface, surrounding water and floating matter are pulled on the upper surface of the partition plate by surface tension. For this reason, the suspended | floating matter on the water surface can be attracted | sucked stably.

Then, the by suction direction of the suction port is inclined with respect to the normal of the upper surface of the partition plate, so as not perpendicular to is tilted (water surface with respect to the vertical axis direction of suction of the suction opening In other words, the suction port can be easily brought into contact with the water surface . Accordingly, water can be vigorously sucked through the suction port, and at the same time, suspended matter on the water surface can be sucked more reliably.

  In addition, depending on how the suction port is inclined in the suction direction, the suction port may be swallowed by a mouth such as “Zu-Zu” or “Zu-Zu”. A floating sound on the water surface is sucked with water and air near the surface of the water (sucking as if breathing) It is also possible to make it. As will be described later, when this roaring sound is generated, it has been confirmed that the suspended matter on the water surface is rapidly sucked.

In this case, either the inclination angle theta ₁ of the suction direction of the suction port relative to the normal of the upper surface of the partition plate many times is not particularly limited. However, too small an inclination angle theta _1, the significance of tilting the suction direction of the suction port decreases. On the other hand, when the inclination angle theta ₁ too large, the area of the portion contributing to the suction in the suction opening is reduced, there may not be suitably aspirated suspended matter on the water surface. For this reason, in the suspended | floating matter collection | recovery apparatus of this invention, inclination-angle (theta) ₁ is made into the range of 0.5-10 degrees .

Furthermore, the area of the upper surface of the partition plate is not particularly limited. However, if the area of the upper surface of the partition plate is too small, not only the partition plate is easily sunk, but also it is difficult to adjust the horizontal or inclination of the partition plate. On the other hand, if the area of the upper surface of the partition plate is too large, it is difficult to handle the partition plate, and it may be difficult to install the suspended matter collection device. For this reason, it is preferable that the area of the upper surface of the partition plate is set to 0.5 to 10 m ² .

  By the way, the buoyancy adjusting means is not particularly limited as long as the buoyancy acting on the partition plate can be adjusted. Examples of the buoyancy adjusting means include a floating material or a weight material. By using these floating materials and weight materials alone or in combination, it is possible to finely adjust the inclination of the partition plate and the water depth of the upper surface of the partition plate. Therefore, it becomes possible to operate the suspended matter recovery apparatus under the optimum conditions that can demonstrate its ability.

  At this time, it is preferable that the floating material is a plurality of protruding pieces integrally provided on the upper surface of the partition plate, and the floating material suction means or the weight material is surrounded by the plurality of protruding pieces. This makes it possible to cause the partition plate to quickly follow the up-and-down movement even when there is a vertical movement caused by waves or the like on the water surface where the suspended matter collection device is installed. It becomes possible to stabilize the water depth of the upper surface of the. Further, since the weight member can be hooked on the protruding piece (the floating member), it is possible to prevent the weight member from being displaced or lost.

  It is also preferable that the suspended matter recovery apparatus of the present invention is provided with a filtering means for removing the suspended matter by filtering the water sucked by the suspended matter suction means together with the suspended matter. This makes it possible to remove oil and dust from the water aspirated with the suspended matter and then return it to its original location, enabling more efficient recovery of the water quality of the water area where the suspended matter recovery device is installed. become.

In addition, the above problems are (1) a suspended matter suction means having a downward suction port for sucking suspended matter on the water surface by bringing it into contact with the water surface, and (2) arranged below the suction port, A partition plate for separating the water near the water surface and the water below it so that water not near the water surface is not sucked into the suction port; and (3) the partition plate is approximately at a desired depth below the water surface. suspended matter collected using a suspended matter recovery device, characterized in that Ri horizontally name and the suction port and a buoyancy adjusting means for adjusting the buoyancy acting on the partition plate so that to contact the water surface a method, the inclination angle of the suction direction of the suction opening theta ₂ with respect to the vertical axis is set to 0.5 to 10 °, suspended matter recovery wherein contacting while tilting the suction port on the water surface It is also solved by providing.

Thus, the by suction direction of the suction port is inclined with respect to the vertical axis (and so as not perpendicular to the water surface), it is possible to easily contact the suction port on the water surface, The suspended matter on the water surface can be sucked more reliably. Moreover, the floating matter on the water surface can be sucked together with water and air near the water surface while generating the above-mentioned roaring sound.

In this case, either set to the suction port of the suction direction of the inclination angle theta ₂ several times with respect to the vertical axis is not particularly limited. However, too small a tilt angle theta _2, the significance of tilting the suction direction of the suction port decreases. On the other hand, when the inclination angle theta ₂ too large, the area of the portion contributing to the suction in the suction opening is reduced, there may not be suitably aspirated suspended matter on the water surface. For this reason, in the suspended | floating matter collection | recovery method of this invention, inclination-angle (theta) ₂ is made into the range of 0.5-10 degrees .

  The depth of water where the suction port overlaps on the upper surface of the partition plate is not particularly limited. However, if the water depth is too shallow, water may not be steadily placed on the upper surface of the partition plate, and the suspended matter may not be stably sucked. On the other hand, when the water depth is too deep, water in a deep place is also sucked by the suction port, and there is a possibility that the suspended matter cannot be efficiently collected. For this reason, it is preferable to set the water depth of the location where the said suction port overlaps in the upper surface of the said partition plate to 5-20 mm.

  As described above, according to the present invention, it is possible to provide a floating substance recovery apparatus that can efficiently suck floating substances on the water surface while suppressing suction of water below the water surface to a small amount. It is also possible to provide a suspended matter recovery method using this suspended matter recovery apparatus.

  A preferred embodiment of the suspended matter collection apparatus of the present invention will be described more specifically with reference to the drawings. FIG. 1 is a conceptual diagram showing a preferred embodiment of the suspended matter recovery apparatus of the present invention. FIG. 2 is a perspective view showing a state in which the suspended matter suction means 10 of FIG. 1 is viewed from the bottom surface side. FIG. 3 is a view showing a state in which the periphery of the suction port 11 is enlarged when the floating substance suction means 10 of FIG. 1 is driven. FIG. 4 is a cross-sectional view showing the internal structure of the filtering means 40 of FIG.

1. Overall Configuration of Floating Material Collection Device As shown in FIG. 1, the floating material collection device of the present embodiment is (1) a downward suction port 11 for sucking floating material 71 on the water surface by arranging it near the water surface. (2) The floating substance suction means 10 having (see FIG. 2), and (2) the water 70 disposed near the water surface so that the water 70 not disposed near the water surface is not sucked into the suction port 11 and the water 70 A partition plate 20 for separating the lower water 70, and (3) a buoyancy adjusting means 30 for adjusting the buoyancy acting on the partition plate 20 so that the partition plate 20 is substantially horizontal below the water surface; (4) The floating substance suction means 10 includes the filtering means 40 for filtering the water 70 sucked together with the floating substance 71 to remove the floating substance 71.

2. As shown in FIG. 2, the floating substance suction means 10 has a downward suction port 11 for sucking the floating substance 71 on the water surface by being arranged near the water surface. The suction port 11 may be provided integrally with the main body of the floating substance suction means 10 or provided at a location away from the main body of the floating substance suction means 10 (for example, provided with a pump). Even if the suction pipe (not shown) is connected to the main body, only the main body is installed on land, and only the periphery of the tip (suction port 11) of the suction pipe is fixed to the partition plate 20) Good. In the former case, it is possible to design the suspended matter collection device in a compact manner. In the latter case, the heavy body does not have to be placed on the partition plate 20. Ensuring buoyancy is easy.

  In the suspended matter recovery apparatus of this embodiment, a drainage pump manufactured by Tsurumi Manufacturing Co., Ltd., model “LSC1.4S-61” is used as the suspended matter suction means 10. This pump has a weight of about 12 kg and a rated power consumption of 590 W. As shown in FIG. 2, this pump has a substantially cylindrical shape (diameter: 19 cm, height: 31 cm), and a plurality of suction ports 11 are integrated at the bottom. It is the thing of the form provided automatically. The suction direction of the suction port 11 (see FIG. 3) is parallel to the height direction of the suspended matter suction means 10.

  When the suspended matter suction means 10 is installed on the partition plate 20, the suction direction of the suction port 11 may be set perpendicular to the upper surface of the partition plate 20, but in the suspended matter recovery apparatus of this embodiment, As shown in FIG. 3, the floating substance suction means 10 is installed to be inclined, and the suction direction of the suction port 11 is inclined with respect to the normal line of the upper surface of the partition plate 20. For this reason, the suspended | floating matter 71 on the water surface can be attracted | sucked more reliably by the suction opening 11. FIG.

The inclination angle θ ₁ (see FIG. 3) of the suction port 11 with respect to the normal line of the upper surface of the partition plate 20 is not particularly limited, but if it is too small, it means that the suction direction of the suction port 11 in the suspended matter suction means 10 is inclined. Will fall. For this reason, it is preferable to set the inclination angle θ ₁ to 0.5 or more. The inclination angle θ ₁ is more preferably 1 ° or more, and further preferably 1.5 ° or more.

On the other hand, if the inclination angle θ ₁ (see FIG. 3) in the suction direction of the suction port 11 with respect to the normal line of the upper surface of the partition plate 20 is too large, there is a possibility that the suspended matter 71 on the water surface cannot be sucked appropriately. For this reason, the inclination angle θ ₁ is preferably set to 10 ° or less. The inclination angle θ ₁ is more preferably 7 ° or less, and further preferably 5 ° or less. In the suspended | floating matter collection | recovery apparatus of this embodiment, inclination | tilt angle (theta) ₁ is set to about 2-3 degrees.

Means for adjusting the inclination angle theta ₁ is not particularly limited. In the suspended matter recovery apparatus of this embodiment, as shown in FIGS. 2 and 3, three bolts 12 are provided around the suction port 11 at the bottom of the suspended matter suction means 10. It is possible to adjust the inclination angle θ ₁ and the water depth D, which will be described later, by changing the amount of protrusion of.

By the way, in the suspended | floating matter collection | recovery apparatus of this embodiment, since it has installed so that the partition plate 20 may be distribute | arranged substantially horizontal (so that it may become substantially parallel with respect to the water surface), this inclination | tilt angle (theta) ₁ is vertical axis | shaft. Is substantially coincident with the inclination angle θ ₂ (see FIG. 3) in the suction direction of the suction port in the suspended matter suction means 10. If the suction direction of the suction port 11 in the floating material suction means 10 is inclined to this level with respect to the water surface, the floating material 71 on the water surface can be sucked together with the water 70 and air near the water surface while generating a roaring sound. It becomes possible.

3. Partition plate The partition plate 20 is disposed below the suction port 11 of the suspended matter suction means 10, so that the water 70 not near the water surface is not sucked into the suction port 11, and the water 70 near the water surface and the water below it. 70 to separate 70. The partition plate 20 may be inclined with respect to the horizontal plane, but is arranged substantially horizontally in the suspended matter recovery apparatus of this embodiment.

  The material of the partition plate 20 is not particularly limited. However, when the main body of the suspended matter suction means 10 is placed on the partition plate 20 as in the suspended matter recovery apparatus of this embodiment, the substantial buoyancy of the partition plate 20 (from the buoyancy acting on the partition plate 20). It is preferable to use a material having a low density so that the value obtained by subtracting the gravity acting on the partition plate 20 can be increased. Specifically, it is preferable to use a material having a specific gravity with respect to water 70 of less than 1. In the suspended | floating matter collection | recovery apparatus of this embodiment, what gave the water-repellent process to the wooden board | plate material is used as the partition plate 20. FIG.

The area of the upper surface of the partition plate 20 is not particularly limited, but if it is too narrow, not only the partition plate 20 is likely to sink, but also the horizontal or inclination of the partition plate 20 is difficult to adjust. Further, it becomes difficult to increase the buoyancy acting on the partition plate 20. For this reason, it is preferable that the area of the upper surface of the partition plate 20 is 0.5 m ² or more. Area of the upper surface of the partition plate 20 is more preferably a 1 m ² or more, further preferable to set 1.5 m ² or more.

On the other hand, if the area of the upper surface of the partition plate 20 is too large, it may be difficult to handle the partition plate 20. For this reason, it is preferable to set the area of the upper surface of the partition plate 20 to 10 m ² or less. Area of the upper surface of the partition plate 20 is more preferable to be 7m ² or less and further preferably 5 m ² or less. In the suspended | floating matter collection | recovery apparatus of this embodiment, the upper surface of the partition plate 20 is a square whose length of one side is about 1.3 m, and the area is about 1.7 m < ² >.

  Although the thickness of the partition plate 20 may be constant, in the suspended | floating matter collection | recovery apparatus of this embodiment, the peripheral part of the partition plate 20 is formed thinly, and the center part is formed thickly. Specifically, the thickness of the end portion of the partition plate 20 is 20 mm, the thickness of the center portion of the partition plate 20 is 30 mm, and the upper surface of the partition plate 20 is directed from the end portion of the partition plate 20 toward the center portion. It is formed so as to have a rising slope. For this reason, the water 70 and the floating substance 71 around the partition plate 20 can be stably introduced above the partition plate 20.

  The water depth D (see FIG. 3) at the location where the suction port 11 overlaps on the upper surface of the partition plate 20 (the center of the upper surface of the partition plate 20) is not particularly limited. However, if the water depth D is too shallow, the water 70 may not be steadily placed on the upper surface of the partition plate 20, and the suspended matter 71 may not be sucked stably. Therefore, the water depth D of the partition plate 20 is determined when the suspended matter suction means 10 (drainage pump) is stopped (when the suspended matter suction means 10 is driven, the water depth D is determined when the suspended matter suction means 10 is stopped). It is preferable to set it to be 5 mm or more at a depth shallower than the water depth D when it is present. The water depth D of the partition plate 20 when the suspended matter suction means 10 is stopped is more preferably 8 mm or more, and further preferably 10 mm or more.

  On the other hand, if the water depth D (refer to FIG. 3) where the suction port 11 on the upper surface of the partition plate 20 overlaps (the center of the upper surface of the partition plate 20) is excessively deep when the suspended matter suction means 10 is stopped, the partition plate 20 is excessively deepened. The water 70 in the vicinity of the upper surface of the water is also sucked by the suction port 11, and there is a possibility that the suspended matter 71 cannot be efficiently collected. For this reason, it is preferable that the water depth D of the partition plate 20 when the suspended matter suction means 10 is stopped is set to 20 mm or less. The water depth D of the partition plate 20 when the suspended matter suction means 10 is stopped is more preferably 19 mm or less, and further preferably 18 mm or less. In the suspended matter recovery method of this embodiment, the water depth D of the partition plate 20 when the suspended matter suction means 10 is stopped is set to about 15 to 16 mm (measured value when the suspended matter suction means 10 is stopped).

4). Buoyancy adjustment means The buoyancy adjustment means 30 is for adjusting the buoyancy acting on the partition plate 20 so that the partition plate 20 is substantially horizontal below the water surface. In the suspended matter recovery apparatus of this embodiment, the buoyancy adjusting means 30 is composed of a floating material 31 and a weight material 32.

  The weight member 32 is not particularly limited as long as it can substantially reduce the buoyancy of the partition plate 20 (that can deepen the water depth of the partition plate 20 compared to the case without the weight member 32). In the suspended | floating matter collection | recovery apparatus of this embodiment, the tank type container 32A and the bottle type container 32B which put water in the inside are used as the weight material 32. FIG. The weight member 32 not only allows the water depth of the partition plate 20 to be adjusted by adjusting the amount of water that enters the interior, but also adjusts the inclination of the partition plate 20 by changing the location where the partition plate 20 is installed. Also possible. The water put into the tank type container 32A and the bottle type container 32B can be collected from the periphery of the suspended matter recovery device.

  On the other hand, the floating material 31 is not particularly limited as long as it can substantially increase the buoyancy of the partition plate 20 (the depth of the partition plate 20 can be made shallower than that without the floating material 31). The apparent specific gravity of the floating material 31 with respect to the water 70 (when the floating material 31 has a hollow portion, the specific gravity including the hollow portion in the volume of the floating material 31) is less than 1. In the suspended | floating matter collection | recovery apparatus of this embodiment, what gave the waterproof process to the wooden protrusion is used as the floating material 31. FIG.

  The floating material 31 may be separated from the partition plate 31, but in the suspended matter recovery apparatus of the present embodiment, the floating material 31 is provided by a plurality of protrusions integrally provided on the upper surface of the partition plate 20. Is configured. The projecting pieces are arranged in a rotationally symmetrical manner around the place where the floating substance suction means 10 is installed on the upper surface of the partition plate 20, and are arranged so as to surround the floating substance suction means 10. For this reason, the partition plate 20 is easy to keep its posture substantially horizontal. The surrounding water 70 and the suspended matter 71 are transferred from the peripheral portion of the partition plate 20 to the central portion thereof through a gap (not shown) between adjacent protruding pieces, a through hole (not shown) provided in each protruding piece, or the like. It has come to be guided.

  Moreover, in the suspended | floating matter collection | recovery apparatus of this embodiment, the weight material 32 can be set | placed in the area | region enclosed with the some protrusion provided as the floating material 31. FIG. For this reason, it is possible to prevent the weight material 32 from being washed away by the projecting piece provided as the floating material 31. When the weight member 32 is hooked on a projecting piece provided as the floating member 31, the position of the weight member 32 can be stabilized.

5. As shown in FIG. 1, the filtering means 40 is connected to the floating substance suction means 10 and the transfer pipe 50, and takes in the water 70 sucked together with the floating substance by the floating substance suction means 10 from above and filters it. Thus, the suspended matter 71 is removed. The bottom of the filtering means 40 has a structure having water permeability, and the water 70 from which the suspended matter is removed inside the filtering means 40 can flow out from the bottom of the filtering means 40 and return to the original location. It is like that.

  The internal structure of the filtering means 40 will be described in more detail. In the suspended | floating matter collection | recovery apparatus of this embodiment, as shown in FIG. 4, the filtration means 40 of the substantially cylindrical tank 41 with which the upper surface and the bottom face were open | released mounted on the mount frame 60 which has water permeability. It has a structure in which an adsorbent is accommodated. Examples of the gantry 60 include grating and punching metal.

  A transfer pipe 50 is fixed to the upper part of the tank 41. The water 70 containing the suspended matter 71 introduced from the transfer pipe 50 into the tank 41 is first introduced into the dust filtration bag 42 accommodated in the upper part of the tank 41 and stored in the dust filtration bag 42. After that, it oozes out from the bottom of the dust filter bag 42 and moves to the lower part of the tank 41. The dust that cannot pass through the fabric eyes of the dust filter bag 42 remains in the dust filter bag 42.

  The dust filter bag 42 is not particularly limited as long as it is formed of a material having water permeability. It may be formed of a natural material such as cotton, or may be a synthetic fiber such as polyester. In the suspended | floating matter collection | recovery apparatus of this embodiment, the dust filtration bag 42 is formed with the polyester fiber. A floating adsorption mat 43 is accommodated inside the dust filtration bag 42, and oil (hydrocarbon) floating in the water accumulated in the dust filtration bag 42 is caused to float by the floating adsorption mat 43 floated on the water surface. It is adsorbed.

  In the suspended matter recovery apparatus according to the present embodiment, the floating adsorption mat 43 uses a mat formed by filling the inside of the sheet with an adsorbent. The kind of the adsorbent filled in the sheet is not particularly limited as long as it can adsorb the target suspended matter. Examples of the adsorbent filled in the floating adsorption mat 43 include water-repellent fibers such as kapok as well as carbides and foamed minerals. In the suspended | floating matter collection | recovery apparatus of this embodiment, the adsorbent "Sumiray (trademark)" by Taniguchi Shokai Co., Ltd. is used as the said adsorbent.

  This adsorbent is made of a carbide having a particle size of 3 mm or less, which is obtained by baking coffee beans, and has an excellent water repellency and oil absorbency, and it has been difficult to adsorb with conventional adsorbents. It is possible to suitably adsorb oil mixed with oil. Moreover, since the coffee beans are used as the raw material, it is possible to contribute to the reduction of waste. Furthermore, this adsorbent not only has an apparent specific gravity during drying that is lighter than that of water, but is also difficult to absorb water, so that its buoyancy can be maintained for a long time.

  The sheet | seat which forms the floating adsorption mat 43 will not be specifically limited if it has oil permeability and water permeability. Natural materials such as cotton may be used, or synthetic materials such as polyester may be used. In some cases, the sheet of the floating adsorption mat 43 is preferably subjected to water repellent finishing. In the suspended matter recovery apparatus of this embodiment, the sheet of the floating adsorption mat 43 is formed of polyester subjected to water repellent finish.

  The water 70 oozing out from the bottom of the dust filter bag 42 passes through the oil adsorbing bag 44 accommodated in the inner bottom of the tank 41, and the oil remaining in it is removed. A weight 45 is placed above the oil adsorption bag 44 so that the oil adsorption bag 44 does not float. In the suspended | floating matter collection | recovery apparatus of this embodiment, the round can pile 45A and the grating 45B are used as the weight 45. FIG.

  The oil adsorbing bag 44 uses a water-permeable bag filled with an adsorbent. The bag body of the oil adsorption bag 44 is not particularly limited as long as it has water permeability. It may be formed of a natural material such as cotton, or may be a synthetic fiber such as polyester. In the suspended | floating matter collection | recovery apparatus of this embodiment, what was formed with the polyester fiber is used.

  The kind of the adsorbent filled in the oil adsorbing bag 44 is not particularly limited as long as it can adsorb the target suspended matter. The same adsorbent filled in the floating adsorption mat 43 can be used. Also in the floating substance collection apparatus of this embodiment, the oil adsorbing bag 44 is filled with an adsorbent “Sumiray (registered trademark)” manufactured by Taniguchi Shokai Co., Ltd. as an adsorbent. The clean water 70 from which the suspended matter 71 has been removed through the oil adsorbing bag 44 flows down from the bottom of the tank 41 and is returned to the original location.

6). Applications The suspended matter recovery apparatus of the present invention is not limited in its application, and can be used in a wide range of applications where the suspended matter 71 on the water surface needs to be recovered. Especially, it is suitable as what collect | recovers liquids which are lighter and more hydrophobic than water, such as oil, benzene, and toluene. Moreover, the installation location can be used not only in natural water areas such as marshes and rivers, but also in artificial water areas and various facilities such as water diversion grooves and water storage tanks and ship ballast tanks in factories and water treatment facilities.

  The suspended matter recovery apparatus of the present invention may be used in a place where there is a flow, but if the flow is too fast, the suspended matter 71 is likely to be flowed downstream without being sucked by the suspended matter suction means 10. For this reason, it is preferable that the flow velocity at the place where the suspended matter collection device is installed is 0.15 m / s or less. The flow velocity at the place where the suspended matter collection device is installed is more preferably 0.1 m / s or less, and further preferably 0.05 m / s or less.

  When it is desired to install the floating substance recovery device in a water area with a high flow velocity, a weir (which may be a floating weir that stops only the flow of water near the water surface and allows the water below it to pass) may be installed. Thus, it is preferable to create a place where the water 70 near the water surface stays, and install a suspended matter recovery device at the place where the water 70 stays. The floating substance recovery apparatus of the present invention can exhibit its performance most in a static water area (the flow rate of water is substantially 0 m / s).

In order to investigate the floating substance collection capability of the floating substance collection apparatus of the present invention, the floating substance collection apparatus shown in FIG. 1 to FIG. 4 is actually installed in the experimental channel in the site of Taniguchi Shokai Co., Ltd. Installed and conducted experiments. As shown in Table 1 below, the experiment was performed using the suspended matter collection apparatuses according to the first to ninth examples having different inclination angles θ ₁ and θ ₂ and the water depth D. In all of the first to ninth embodiments, the partition plate 20 was substantially horizontal. For this reason, the inclination angle θ ₁ and the inclination angle θ ₂ are substantially the same. The water depth D in Table 1 below is a value when the suspended matter suction means 10 is stopped.

When the presence or absence of the roaring sound, its period, and the state of collection of suspended solids were examined from the first example to the ninth example, the results shown in Table 2 below were obtained.

From the results of Table 2 above, it was found that the suspended matter recovery apparatus of the present invention is effective for efficient recovery of suspended matter. In particular, it has been found that when the inclination angles θ ₁ and θ ₂ are about 2.5 °, the suspended matter can be recovered very well.

It is the conceptual diagram which showed the suitable embodiment of the floating body collection | recovery apparatus of this invention. It is the perspective view which showed the state which looked at the suspended | floating matter suction means of FIG. 1 from the bottom face side. It is the figure which showed the state which expanded the periphery of the suction port at the time of the drive of the floating substance suction means of FIG. It is sectional drawing which showed the internal structure of the filtration means of FIG.

Explanation of symbols

10 Floating substance suction means 11 Suction port 12 Bolt (tilt angle adjustment means)
20 Partition plate 30 Buoyancy adjustment means 31 Floating material 32 Weight material 32A Tank type container (container)
32B Bottle type container (container)
40 Filtration means 41 Tank 42 Dust filtration bag 43 Floating adsorption mat 44 Oil adsorption bag 45 Weight 45A Round cane pile 45B Grating 50 Transfer pipe 60 Mounting base 70 Water 71 Floating matter D Water depth θ ₁ the inclination angle of the suction direction of the suction port for the inclination angle theta ₂ vertical axis in the direction of suction

Claims (9)

Floating substance suction means having a downward suction port for sucking floating substances on the water surface by contacting the water surface ;
A partition plate disposed under the suction port, for separating water near the water surface and water below the water surface so that water not near the water surface is not sucked into the suction port;
There in suspended matter recovery device and a buoyancy means for the partition plate Ri substantially horizontally Na underwater, and the suction port to adjust the buoyancy acting on the partition plate so that to contact the water surface And
Said inclination angle theta ₁ of the suction direction of the suction port relative to the normal of the upper surface of the partition plate is set to 0.5 to 10 °, and so may be contacted in a state of tilting the suction port on the water surface Float collection device characterized by . Inclination angle θ ₁ The suspended | floating matter collection | recovery apparatus of Claim 1 provided with the inclination-angle adjustment means for adjusting the. The inclination angle adjusting means is a bolt provided around the suction port at the bottom of the floating substance suction means, and the inclination angle θ is changed by changing the protrusion amount of the bolt. ₁ The suspended | floating matter collection | recovery apparatus of Claim 2 which enabled it to adjust. The suspended | floating matter collection | recovery apparatus in any one of Claims 1-3 which set the area of the upper surface of the said partition plate to 0.5-10 m < ² >. The suspended matter recovery apparatus according to any one of claims 1 to 4 , wherein the buoyancy adjusting means is made of a floating material or a weight material.   6. The suspended matter recovery apparatus according to claim 5, wherein the floating material includes a plurality of projecting pieces integrally provided on the upper surface of the partition plate, and the suspended matter suction means or the weight material is surrounded by the plurality of projecting pieces. . The suspended matter collection | recovery apparatus in any one of Claims 1-6 provided with the filtration means for filtering the water which the suspended matter suction means sucked with the suspended matter, and removing a suspended matter. Floating substance suction means having a downward suction port for sucking floating substances on the water surface by contacting the water surface ;
A partition plate disposed under the suction port, for separating water near the water surface and water below the water surface so that water not near the water surface is not sucked into the suction port;
Using suspended matter recovery device and a buoyancy means for the partition plate Ri substantially horizontally Na underwater, and the suction port to adjust the buoyancy acting on the partition plate so that to contact the water surface A floating material collection method,
Wherein the inclination angle theta ₂ in the direction of suction of the suction port is set to 0.5 to 10 °, suspended matter recovery wherein contacting while tilting the suction port on the water surface with respect to the vertical axis. The suspended matter collection | recovery method of Claim 8 which set the water depth of the location which the said suction port overlaps in the upper surface of the said partition plate to 5-20 mm.

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