JPS5919756B2 - Collection method of fluid floating matter - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for collecting fluid floating matter on a water surface such as spilled oil, and its purpose is to collect fluid floating matter on a water surface such as spilled oil or red tide. To provide a method for collecting fluid floating matter on a water surface, which can efficiently collect fluid floating matter floating on a water surface using a simple device.

An embodiment of the present invention will be described in detail below with reference to the drawings.

Reference numeral 1 denotes a normal oil fence, in which two oil fences 1, 1 are arranged in a fan-shape such that the intervals become narrower along the flow direction of the floating material A.
, 10 are connected to the floating inlet 6 of the recovery separation tank 2, and the tips of the oil fences 1, 1 are appropriately fixed with anchors 8 or the like.

Reference numeral 2 denotes a recovery and separation tank, which is formed within a recovery and separation tower 11 connected to the oil fence 1.1, for example, and anti-rolling bodies 10 are removably disposed on both sides of the recovery and separation structure 11 via legs 9. ing.

Therefore, the inside of the recovery separation tank 11 is formed into a 3-type tank in which a buoyancy tank 12, a separation tank 13, and a recovery separation tank 2 are sequentially provided inside. Water is controlled by a valve body 14 provided at the bottom of the recovery separation and decomposition 11.

Inside the recovery separation tank 2, there are a partition plate 15at15b and a baffle plate 16a, each having an upper end surface that is the same as or similar to the lower surface of the layer B of recovered material such as floating oil in the upper part of the recovery separation tank 2.
The partition plates 15a and 15b are formed so as to partition the lower part of the recovery and separation tank 2, and the water flow holes 17 are arranged alternately on the left and right sides of the lower end side. .17 is formed, and the water C flows in a zigzag pattern from side to side in the lower part of the recovery/separation tank 2 and passes through the water flow holes 17, 17 of the partition plates 15a, 15b.

In addition, the lower ends of the baffle plates 16 a t i 6 b are formed in a completely open shape so as to suppress the flow of water C on the lower surface of the layer B of the collected material floating on the water C in the collection and separation tank 2. be.

(The arrows in FIG. 2 indicate the flow of water C at the bottom of the recovery and separation tank 2.

) 7 is an emulsion prevention plate, which is disposed diagonally downward and protrudes inward from the floating flow inlet 6, and the emulsion prevention plate 1 has a diameter of 1crfL to 2cm as required.
A large number of small holes 18 of approximately rfL size are drilled, and the suspended matter A and water C flowing in from the floating flow inlet 6 in upper and lower layers are collected without breaking the layered state. The water is directed to flow into the separation tank 2, and only water C is passed through the small hole 18.
- flows down into the water layer in the recovery separation tank 2, and the suspended matter A flows down along the emulsion prevention plate 7 while maintaining the layered state, and directly flows into the liquid collected matter B layer,
This prevents the floating matter A from becoming an emulsion due to impactful stirring when the floating matter A flows down to the low water surface L1 in the recovery separation tank 2.

Note that the emulsion prevention plate 1 may be non-porous.

Further, a lattice plate 29 for removing foreign objects such as driftwood is arranged above the emulsion prevention plate 7, and foreign objects such as driftwood and vinyl caught on the lattice plate 29 are removed by an appropriate mechanical device or manually.

31 in the figure shows the lattice plate 29 where foreign matter and oil are directly absorbed by the action of waves, etc.
The suppression weir plate 30 is a weir plate that can be set up or down depending on the layer thickness of the floating matter A on the external water surface L2 to prevent the floating matter A from flowing into the recovery separation tank 2 without passing through the water.

The collected materials B separated into layers in the upper part of the recovery and separation tank 2 flow into the separation tank 13 from the collection port 19° 19a at the upper part of the collection and separation tank 2, and the collected materials filled in the separation tank 13 flow into the separation tank 13. B is sucked in by a recovery pump 4 such as an oil pump through a pipe 20 and a recovery pipe 21 and is recovered in a floating matter tank 3 such as an oil tank in a storage bond 22 .

On the other hand, the water C in the lower part of the recovery separation tank 2 passes through the water flow holes 17, 17 of the partition plates 15a and 15b and enters the water reservoir 25 at the rear of the recovery separation tank 2.
The water is drawn into the water by the water pump 5 through the filter 23 and the drain pipe 24 as appropriate, and is discharged to the outside.

The recovery pump 4 and water pump 5 are placed on the storage stand 22, and a cable 26゜2 connects the recovery separation solution 11 and storage #22.
6, and the water pumps 4 and 5 are connected to the separation tank 13 and the water reservoir 2 through the recovery pipe 21 and the drain pipe 24, respectively.
It is connected to 5.

FIG. 5 shows an embodiment in which the floating object A does not have a flow like a tidal current, and two towing vessels 27, 27 are made to proceed in parallel with each other with an interval, and the towing vessels 27, 27 At the same time, the entire tip of the oil fence 1, 1 is towed, and the rope 28,
28, the storage vessel 22 is towed and recovered into floating objects while moving forward at a slow speed of about 0.5 to 1.5 knots.

As mentioned above, the present invention allows the water level in the collection separation tank to be lower than the external water surface such as the sea surface (therefore, the fluid suspended matter floating in a layer on the external water surface can be collected in a high concentration and efficiently (the collection separation tank In addition, fluid floating substances such as floating oil on the external water surface are allowed to flow into the recovery and separation tank together with water while maintaining an approximately stationary state while buffering the impact of the flow. It is possible to prevent suspended matter and water from becoming turbid and emulsified due to the impact when they flow into and fall into the collection separation tank. Therefore, the separation of suspended matter and water into layers, which takes a long time on the external water surface, can be used as is, reducing the labor required for separating suspended matter and water. It has the effect of reducing the cost required for floating matter collection and improving the floating matter collection efficiency,
Moreover, since a still water filter is formed at the bottom of the layer of floating substances such as oil floating in a layer at the top of the recovery separation tank, the flow is suppressed and the floating substance tank in this recovery separation tank is The lower surface is not agitated by the flow of water, and there is no chance of remixing of suspended solids and water in the collection separation tank, and furthermore, there is no chance of remixing of suspended matter with water in the still water detector. The buoyant force separates and raises floating objects, improving the separation and collection efficiency.Since there is no upward or horizontal flow in the still water inspector, the separation and rising due to this buoyancy is not hindered, and the separation and recovery efficiency is improved. By separating floating matter from the water, it has the effect of further improving the collection efficiency of floating matter.Furthermore, a flowing water section can be formed below the still water detector, and the water in this section can be discharged to the outside. , even if a large amount of water continuously flows into the recovery separation tank together with fluid suspended matter, this water can be continuously discharged to the outside in large quantities, and a large amount of fluid suspended matter on the external water surface can be recovered. In addition to being effective in improving the separation and collection efficiency of fluid suspended matter, the floating matter can be separated and floated upward through the still water section due to the agitation force of the water flow in the flowing water section. In addition, although it has a flowing water section that makes it possible to dispose of a large amount of suspended matter, a still water section is formed above this flowing section, so as mentioned above, floating matter cannot be separated and floated in the still water section. It has the effect of promoting.

[Brief explanation of drawings]

Fig. 1 is a schematic top view of an embodiment of the present invention, Fig. 2 is a schematic enlarged top view of the recovery and separation solution as described above, Fig. 3 is a schematic YY sectional view of the recovery and separation bond as above, and Fig. 4 5 is a schematic top view of another embodiment of the same as above, 2 is a recovery inspection, 3 is a floating matter tank, 4 is a recovery pump, and 5 is a schematic top view of another embodiment of the same. is a water pump, 6 is a floating inlet, 7 is an emulsion prevention plate, A is floating matter, B is collected matter, C is water, L7
°L2 is the water surface.

Claims (1)

[Claims] 1 The water surface in the recovery separation tank that runs on the sea surface is lower than the external water surface such as the sea surface, and the fluid floating substances such as floating oil on the external water surface are allowed to flow down into the recovery separation tank along with the water, and are collected and separated. A still water guard is formed at the bottom of the layer of suspended matter such as oil floating in a layer at the top of the tank, and the flow is suppressed in this still water guard. By suppressing the flow, floating matter mixed in the water in and below the static water state is raised by its buoyancy, and the floating matter above the static water state is appropriately collected in a floating matter tank such as an oil tank, and the above-mentioned A method for collecting fluid floating matter on a water surface, characterized by discharging water below a still water detector to the outside.