JPH0813456A - Collection of floating scum and device - Google Patents

Abstract

PURPOSE:To improve the efficiency of collecting work, by providing a floating body provided with a nozzle deliverying sucked water outwardly within an oil fence and collecting effluent oil to the inner peripheral edge of the fence by means of the water stream flowing to the outward side. CONSTITUTION:Sucked water of a pump 14 is ejected from a nozzle 18 to a flange 28 with warped ends provided at the contact part with the horizon to form a water stream 26, 38 flowing outward. The collecting device 10 of floating scum is put inside an oil fence 36 by use of an anchor (weight). The pump 14 is driven by an electric power generator 16 and effluent oil 32 is collected to the periphery of the oil fence 36. In this way, the collecting works are carried out rapidly.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for collecting suspended matter in order to collect oil, dust and the like floating on the water surface.

[0002]

2. Description of the Related Art In recent years, it has become a serious problem that a large amount of oil leaks from a tanker to pollute the ocean due to a grounding of the tanker or a collision accident. In order to minimize the pollution caused by the spilled oil, it is necessary to prevent the spilled oil from diffusing and to collect it at an early stage. Therefore, conventionally, an oil fence or the like is arranged around a contaminated area where oil is floating to prevent the outflow of oil from spreading, and the outflow oil in the area surrounded by the oil fence is sucked and collected using a recovery device. I am trying.

[0003]

By the way, in order to efficiently collect the spilled oil in a short time, it is necessary to always thicken the spilled oil layer near the suction port of the spilled oil recovery device and suck only the oil. desirable. However, in the conventional oil spill recovery method, since the oil spill area is simply surrounded by the oil fence to suck the spill oil,
It was not possible to make the oil layer near the suction port of the recovery device thick enough. In particular, as the diffusion progresses, and as the recovery work progresses, the oil layer gradually becomes thinner,
The amount of seawater sucked together with the spilled oil gradually increases, and the recovery efficiency decreases. Moreover, since the spilled oil that exists over a wide area must be collected, the recovery work is not easy and it takes a long time to collect the spilled oil, and a large amount of spilled oil that cannot be collected is generated. May cause

The present invention has been made to solve the above-mentioned drawbacks of the prior art, and an object thereof is to improve the recovery efficiency of suspended matter. Another object of the present invention is to make it possible to reduce the amount of floating matter that cannot be recovered.

[0005]

In order to achieve the above-mentioned object, the method for consolidating suspended solids according to the present invention forms a flow toward the peripheral portion of the surrounding area on the water surface in the surrounding area, and Floating matter is gathered around the peripheral area of the surrounding area. The flow toward the peripheral edge can be easily formed by creating an upflow in the surrounding area. Further, when the suspended matter is collected, the suspended matter gathered around the peripheral portion of the surrounding area as described above is sucked.

The floating substance collecting apparatus according to the present invention for carrying out the above collecting method is provided with a nozzle arranged upward in water, a buoy body for supporting the nozzle, and a buoy body. And a pump that discharges the sucked water from the nozzle to form an upward flow.

It is desirable to form the buoy body in a cylindrical shape and arrange a plurality of nozzles around the buoy body. The nozzles may be arranged at equal intervals. Further, the buoyant body may be provided with an end-curved flange at the contact portion with the water surface. Then, the buoyant body can be provided with an anchor for mooring the buoyant body at a predetermined position. The power to drive the pump can be supplied, for example, from a floating debris collection ship moored nearby, but if a power source is built into the buoy, not only is a long cable required,
The device is easy to handle. This power source may be a battery or a generator such as a diesel generator.

[0008]

According to the present invention configured as described above, a floating material such as oil spill is formed in the surrounding area by forming a flow toward the peripheral portion of the surrounding area on the water surface in the area surrounded by a floating body such as an oil fence. Push it to the periphery. For this reason,
The suspended matter in the enclosed area is densely gathered only at the peripheral portion of the area, and the suspended matter layer becomes thick. Therefore, when the suspended solids are collected by the collection device, if the suspended solids in the peripheral portion of the surrounding area are sucked, the suction ratio of the suspended solids can be increased, and it becomes possible to collect the suspended solids with high efficiency, which improves the working efficiency. A quick recovery can be performed. In addition, since the recovery work only needs to be performed on the peripheral portion of the surrounding area, the recovery work is facilitated, the recovery work time can be shortened, and the uncollectible suspended matter can be extremely reduced.

The flow toward the peripheral edge of the surrounding area can be easily obtained by injecting the water discharged by the pump from the nozzle arranged upward in water to generate an upward flow. Then, if a flow toward the peripheral edge of the surrounding area is generated by the upward flow, a flow from one point toward the peripheral edge can be formed, and suspended matters in the area can be effectively collected at the peripheral edge. Further, if the buoyant body is made cylindrical and a plurality of nozzles are arranged at equal intervals around the buoyant body, a flow can be formed toward the peripheral portion of the surrounding area around the buoyant body, and the suspended matter can be easily collected in the peripheral portion of the surrounding area. be able to. When the number of nozzles is large, a flow can be formed toward the peripheral edge of the region where there is no evenness, and floating substances can be prevented from remaining around the buoy. Further, when the flange having the end warp shape is formed on the buoy body, the upward flow of water ejected from the nozzle can be efficiently converted into a flow along the water surface by the flange portion. Also, if you attach an anchor to the buoy,
Even if there is a difference in the ejection amount from each of the nozzles arranged around, or if there is a sea current or a tidal current, the buoy body can be moored at a fixed position without being affected by these.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment of a floating material collecting method and apparatus according to the present invention will be described in detail with reference to the accompanying drawings. Figure 1
It is a structure explanatory view of the floating substance aggregation device concerning an example.

In FIG. 1, a floating substance concentrating device 10 has a casing 12, which is a floating body, in a cylindrical shape. The casing 12 is completely waterproof, the pump 14 is provided in the lower part of the inside, and the generator 16 as a power source for driving the pump 14 is housed in the upper part thereof. In addition, the casing 12 has a plurality of nozzles 1 around the lower part.
8 are arranged at equal angular intervals with respect to the center of the casing 12. These nozzles 18 are attached upward, and eject water vertically upward as shown by an arrow 20.

That is, each nozzle 18 is connected to a discharge port (not shown) of the pump 14, and the water under the casing 12 which is sucked and pressurized by the pump 14 as shown by arrow 24 is shown by arrow 20. To form an upward flow around the casing 12. Further, the casing 12 is provided with a flange 28 having a warp-shaped cross section on the peripheral surface, and the buoyancy is adjusted so that the water is submerged up to the vicinity of the upper surface of the flange 28. It is guided to the lower curved surface portion 28 so that it can be efficiently converted into a flow along the water surface 30 as indicated by the arrow 26.

The floating material concentrating device 10 of the embodiment configured as described above is used as shown in FIG. 2 when collecting spilled oil, for example. That is, after arranging the suspended matter consolidating device 10 in the contaminated area 34 in which the spilled oil 32 is suspended,
The contaminated region 34 is surrounded by an oil fence (or an oil fence with a collecting device) 36 as a floating body. At this time, it is desirable that the floating material aggregating apparatus 10 be located at the center of the area 34 surrounded by the oil fence 36 as much as possible. The suspended matter consolidating device 10 may drop the polluted area 34 into the enclosed polluted area 34 after surrounding the polluted area 34 with the oil fence 36.

Thereafter, the pump 14 is operated by remote control or the like.
When the pump is driven, the pump 14 sucks the seawater below the casing 12 from the suction port 22 as shown by the arrow 24 in FIG. 1, and injects it from the nozzle 18 as shown by the arrow 20 to form an upward flow around the casing 12. This upward flow is converted into a flow in the direction along the water surface 30 as indicated by the arrow 26 by the flange 28 provided on the casing 12, and the peripheral portion of the region 34 surrounded by the arrow 38 in FIG. 2, that is, the oil fence 36. It becomes the flow toward.

As a result, the spilled oil 32 floating in the contaminated area 34 is gathered to the portion of the oil fence 36 by the flow 38 toward the oil fence 36, and becomes a high density to form a thick oil layer. Therefore, if the spilled oil 32 collected in the peripheral portion of the region 34 is sucked by a collecting device (not shown) or a collecting device provided on the oil fence 36,
The suction ratio of the spilled oil 32 can be increased, and the spilled oil 32
Can be efficiently collected in a short time. Moreover, in the embodiment, since the upward flow is generated in the central portion of the contaminated region 34 surrounded by the oil fence 36 to form the flow 38 toward the oil fence 36, most of the spilled oil 32 in the contaminated region 34 is stored in the oil fence 36. It is possible to collect the oil spilled at this location, and to almost completely eliminate the leakage of the spilled oil 32 and the spilled oil 32 that cannot be collected.

In the embodiment, the casing 1
Since the plurality of nozzles 18 are arranged at equal intervals around 2, the flow 38 toward the oil fence 36 can be made uniform and the spilled oil 32 can be evenly brought to the oil fence 36 side, and the jet water flow of the nozzle 18 can be made. This can prevent the floating material aggregating apparatus 10 from moving. In addition, in the embodiment, since the generator 16 is built in the casing 12, it is easy to handle, and a power supply cable is connected to another power supply device to supply power to the pump 14. You can eliminate the hassle. Further, in the embodiment, the flange 28 having a warp-shaped cross section is provided at the portion in contact with the water surface 30, so that the upward flow formed by the water sprayed by the nozzle 18 is efficiently converted into the flow along the water surface 30. can do.

FIG. 3 shows another embodiment.
The floating material aggregating apparatus 10 of the present embodiment does not have a generator for driving the pump 14, and a waterproof / explosion-proof type cable connector (not shown) on which the power cable 40 can be detachably connected is provided. It is provided. Then, the floating material aggregation device 10
The cable connector is electrically connected to the pump 14, and the power supply cable 40 connected between the cable connector and the oil spill recovery ship 42 collects the power as shown in FIG. Power is supplied from the ship 42 to the pump 14. As described above, in the floating material aggregating apparatus 10 of the present embodiment, since the recovery ship 42 supplies power to the pump 14 without providing a generator, the apparatus can be made small and lightweight.

FIG. 4 shows an embodiment having an anchor. That is, in the floating material aggregating apparatus 10 shown in FIG. 4A, a chain (or wire) 44 is connected to the lower portion of the casing 12, and a weight (anchor) 46 contacts the seabed 48 at the lower end of the chain 44. It is attached so as not to. As described above, by providing the weight 46, the floating material aggregating apparatus 10 can be prevented from moving even if the amount of water sprayed from the nozzles 18 arranged around the casing 12 varies. You can Then, in particular, as shown in FIG. 4 (2), when the chain 44 is lengthened so that the weight 46 comes into contact with the seabed 48, it is possible to prevent the floating material concentrator 10 from flowing even if there is a fast tidal current or ocean current. Can be prevented.

In the above-mentioned embodiment, the case where the present invention is applied to the recovery of oil spill in the ocean has been described, but the present invention can also be applied to the recovery of dust and the like in the ocean, lakes and marshes.
And in the said Example, the generator 16 was used as a power supply.
Although the case of using a battery has been described, a battery may be used. Further, in the above-mentioned embodiment, the case where the nozzle 18 is arranged in the lower part of the casing 12 has been described, but a nozzle for injecting water in a tangential direction is provided at the contact portion of the casing 12 with the water surface 30, and water is ejected from this nozzle. The flow may be formed toward the peripheral portion of the region while being jetted and rotating the casing 12. Further, in the above-mentioned embodiment, the case where the suspended matter is sucked and collected has been described, but when the suspended matter is large dust or the like, it may be collected by scooping up the suspended matter. An injection port may be provided in a submerged portion of the peripheral surface of the casing 12 so that the device can be moved in any direction by injecting water from the injection port by remote control.

[0020]

As described above, according to the present invention, on the water surface in the enclosed area, a flow toward the peripheral portion of the enclosed area is formed so that suspended matter such as oil spillage is introduced into the peripheral portion of the enclosed area. As a result, the suspended matter in the enclosed area is concentrated only at the peripheral portion of the area, becomes dense, and forms a thick layer. Therefore, it becomes possible to collect the suspended solids with high efficiency by the recovery device, the working efficiency is improved, and rapid recovery can be performed, and the uncollectible suspended solids can be extremely reduced. Further, since the suspended matter may be collected at the peripheral portion of the surrounding area, the time for the collecting work can be shortened and the collecting work can be facilitated.

Further, in the present invention, since the buoyant body is formed into a cylindrical shape and a plurality of nozzles are arranged at equal intervals around the buoyant body, water is jetted upward from the nozzles to form an upward flow. A flow can be formed on the water surface toward the peripheral edge of the surrounding area with the buoyancy body at the center, and the suspended matter in the surrounding area can be collected evenly around the peripheral edge portion. In addition, by forming an end warped flange at the contact part with the water surface of the buoy,
The upward flow can be efficiently converted into a flow along the water surface at the flange portion. Furthermore, by attaching an anchor to the buoy, even if there is a difference in the ejection amount of each nozzle arranged around the buoy, or if there is a sea current or tidal current, it will not be affected by these. The buoy can be moored in place.

[Brief description of drawings]

FIG. 1 is a front view of a floating material aggregating apparatus according to an embodiment of the present invention.

FIG. 2 is an explanatory diagram showing a use state of the embodiment.

FIG. 3 is an explanatory diagram of another embodiment and a diagram showing a usage state.

FIG. 4 is an explanatory diagram of an example in which an anchor is provided.

[Explanation of symbols]

 10 Floating Material Concentrator 12 Floating Body (Casing) 14 Pump 16 Generator 18 Nozzle 28 Flange 32 Floating Material (Oil Spill) 34 Surrounding Area (Contaminated Area) 36 Oil Fence 46 Anchor (Weight)

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Hideki Endo Inoue Hideki, Akishima-shi, Tokyo 1-chome Atsushima Mitsui Co., Ltd. Akishima Laboratory, Mitsui Shipbuilding Co., Ltd. (72) Tatsuzo Shibata 1058 Nakao Uozumi-cho, Akashi-shi, Hyogo Shibata Industry Incorporated (72) Inventor Nobuyasu Ikoma 1058 Nakao, Uozumi-cho, Akashi-shi, Hyogo Shibata Industry Co., Ltd.

Claims (6)

[Claims] 1. A method of consolidating floating material, characterized in that a flow toward a peripheral portion of the surrounding area is formed on a water surface in the surrounding area, and floating matters in the area are gathered to the peripheral portion of the surrounding area. 2. The flow toward the peripheral portion of the surrounding area is:
The floating material aggregating method according to claim 1, wherein the floating material is formed by generating an upward flow in the surrounding area. 3. After surrounding the surface of the water in which the suspended matter exists with a floating body or the like, a flow is formed in the enclosed area toward the peripheral portion of the enclosed area, and the suspended matter is gathered to the peripheral portion of the enclosed area to gather the suspended matter. A method for recovering suspended matter, characterized by suctioning and recovering the suspended matter at a peripheral portion of a region. 4. A nozzle arranged upward in water,
A floating substance aggregating apparatus comprising: a buoyant body that supports the nozzle, and a pump that is provided on the buoyant body and that discharges sucked water from the nozzle to form an upward flow. 5. The buoy body is formed in a cylindrical shape, and an end-warped flange is provided at a contact portion with the water surface,
The floating substance collecting apparatus according to claim 4, wherein a plurality of the nozzles are arranged on a peripheral surface portion of the buoyancy body in a circumferential direction. 6. The floating substance collecting apparatus according to claim 4, wherein the buoyant body has an anchor for mooring the buoyant body at a predetermined position.