JP3079040B2 - Oil-water recovery separation equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to an oil / water recovery / separation apparatus,
More specifically, the present invention relates to an oil / water recovery / separation device that reliably recovers / separates oil / water even on a rocking ship or the like.

[0002]

2. Description of the Related Art Various types of oil / water recovery / separation apparatuses have been proposed and put into practical use for the purpose of treating undiluted effluent containing oil / water and scum / miscellaneous substances contained therein. In these oil / water recovery / separation apparatuses, separation of the undiluted wastewater mixed with the oil / water is performed by separating oil and water up and down in the separation tank by a difference in specific gravity.

[0003]

However, in the above-described oil-water recovery / separation apparatus, the upper part of the separation tank is opened and the opening is large, so that the oil-water recovery / separation apparatus is used on a rocking ship or the like. In the case of performing the recovery separation, there is a problem that the undiluted wastewater collected in the separation tank jumps out.

[0004] It is an object of the present invention to solve the above-mentioned problems and to provide an oil / water recovery / separation apparatus capable of reliably recovering / separating oil / water even on a rocking ship or the like.

[0005]

According to a first aspect of the present invention, there is provided an oil-water recovery / separation apparatus according to the present invention, wherein the wastewater mixed with oil-water and scum and miscellaneous substances contained therein is mixed. A recess is formed slightly above the center of the separation tank that separates the undiluted waste liquid supplied from the recovery pump that recovers the undiluted solution into oil and water by a specific gravity difference, and the inside of the separation tank is divided into an upper chamber and a lower chamber. At the same time, one end of a stock solution recovery pipe connected to the recovery pump is attached to the upper chamber, and a water discharge pipe is arranged from below the lower chamber to above the upper chamber. Is characterized in that an oil discharge pipe is rotatably attached to the recess of the separation tank while protruding outside the upper chamber.

According to the second aspect of the present invention, there is provided an oil / water recovery / separation apparatus which separates the undiluted wastewater supplied from a recovery pump for collecting the undiluted wastewater mixed with oily water and scum, miscellaneous substances and the like by the difference in specific gravity. A hollow portion is formed slightly above the center of the separation tank for separating water into water, and the interior of the separation tank is divided into an upper chamber and a lower chamber, and the upper chamber has a stock solution recovery pipe connected to the recovery pump. One end of the lower chamber is attached, and the lower chamber is filled with a whisker net formed of metal whiskers in a net shape, and air blowing means for blowing air into the whisker net is provided. A water discharge pipe is disposed over the upper chamber, and a tip of the water discharge pipe is projected outside the upper chamber. On the other hand, an oil discharge pipe is rotatably attached to a recess of the separation tank. Features.

Further, the oil discharge pipe may have an L-shape, and may be provided so as to rotate by a driving force of a motor.

Further, the motor may be provided so as to be linked with a sensor which operates by detecting the water level in the separation tank.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

In FIG. 1, reference numeral 1 denotes an oil / water recovery / separation apparatus according to the present invention. The oil-water recovery / separation apparatus 1 separates the undiluted wastewater 3 supplied from a recovery pump 4 for collecting undiluted wastewater 3 containing oily water and scum and miscellaneous substances contained therein into oil and moisture by a difference in specific gravity. It is mainly composed of a tank 5, a water discharge pipe 6, and an oil discharge pipe 7.

The external appearance of the separation tank 5 is a rectangular parallelepiped. The interior of the separation tank 5 is divided into an upper chamber 5a and a lower chamber 5b by a recess 10 provided slightly above the center thereof. One end of a stock solution recovery pipe 11 connected to the recovery pump 4 is attached to one side, and an air release valve 12 is provided on the upper surface. In addition, the lower room 5
A water level gauge 13 is provided on one upper side of b.

The water discharge pipe 6 is disposed between the upper chamber 5a and the lower chamber 5b, and the distal end of the water discharge pipe 6 is bent in an L-shape at the upper part of the upper chamber 5a and is externally provided. It protrudes, and its rear end is located near the inner bottom of the lower chamber 5b. On the inclined inner bottom surface of the upper chamber 5a (opposite to the undiluted liquid recovery pipe 11 side), a substantially inverted baffle plate 16 is provided continuously on the inner bottom surface. Thus, half of the communication port 5c inside the recess 10 separating the upper chamber 5a and the lower chamber 5b is shielded.

A hatch 17 is provided at the upper part of the lower chamber 5b, and a whisker (30) such as stainless steel is provided at an intermediate part.
A container 19 filled with a whisker net 18 in which a 線 40 micron thin line is formed in a net shape is arranged. The container 19 is provided with a large number of through holes 19a, and an air pipe 20 (air blowing means) for blowing air into the whisker net 18 is disposed below. The air pipe 20 also has a large number of through holes (not shown).

The whisker net 18 may be replaceable, or the container 19 itself may be replaceable. Furthermore, the surface of the whisker is pickled,
By increasing the surface area by performing a satin finish (rough surface treatment), oil particles easily adhere.

An oil discharge pipe 7 having an L-shape in side view for discharging the oil 3a accumulated in the upper chamber 5a to the outside is rotatably attached to one side of the recess 10 through a receiving member 23. At the same time, the vertical portion of the oil discharge pipe 7 is located in a hopper 24 formed outside one side of the separation tank 5, and the tip of the horizontal portion is an obstruction provided in the communication port 5 c inside the recess 10. It is located behind plate 16.

The oil discharge pipe 7 is provided so as to be rotated by the driving force of the motor 26, and has an output shaft 27 of the motor 26.
Is fixed to the lower portion outside the vertical portion of the oil discharge pipe 7. The motor 26 is controlled to operate when the water level gauge 13 (sensor) detects a predetermined water level of the water 3b accumulated in the lower chamber 5b, and rotates the oil discharge pipe 7 to make the oil 3a external. It is provided to discharge.

Note that the oil discharge pipe 7 is temporarily stopped in a state where the oil discharge pipe 7 is rotated half downward, and when the oil meter (not shown) detects that the amount of oil has run out, the operation of the motor 26 is controlled again. You may make it return. In addition, the oil discharge pipe 7
May be rotated manually.

Next, according to the oil / water recovery / separation apparatus 1 having the above-described configuration, first, the recovery pump 4 separates the oil / water and the waste water concentrate 3 containing the scum, miscellaneous substances and the like contained therein through the concentrate recovery pipe 11. When supplied to the upper chamber 5a of the tank 5, the undiluted waste water 3 falls through the communication port 5c, is guided to the lower chamber 5b, accumulates, and separates by specific gravity. At this time, the oil 3a containing scum, miscellaneous substances and the like is guided to the upper chamber 5a while gradually floating, and the position of the oil 3a gradually rises. Along with this, the water level of the water 3b in the lower chamber 5b also rises, and when the water level determined by the water level gauge 13 is detected, the operation of the motor 26 linked to the water level gauge 13 is controlled to control the oil content. Since the discharge pipe 7 rotates, the oil 3a accumulated in the upper chamber 5a can be collected outside through the oil discharge pipe 7.

On the other hand, some oil particles are also mixed in the water in the lower chamber 5b. When the oil particles come into contact with the fine wires of the whisker net 18 provided in the lower chamber 5b, they adhere due to the surface tension. A large amount can be recovered, and the water 3b passes as it is. As described above, the oil particles are held by the whisker net 18, so that the oil / water separation efficiency can be improved. Then, the water 3b can overflow from the upper part of the water discharge pipe 6 to the outside and be drained.

The oil particles adhered to the whisker net 18 can be forcibly dropped by blowing air from the air pipe 20. Then, the dropped particles float and can be collected outside together with the oil 3a in the upper chamber 5a through the oil discharge pipe 7.

Further, on the inclined inner bottom surface of the upper chamber 5a (opposite to the stock solution recovery pipe 11 side), a substantially inverted baffle plate 16 is provided continuously on the inner bottom surface. While the oil 3a is being collected by the oil discharge pipe 7, the upper chamber 5
It can be prevented that the undiluted drainage liquid 3 supplied to “a” directly enters the oil discharge pipe 7.

In addition, the provision of the oil discharge pipe 7 in the depression 10 of the separation tank 5 allows the oil 3a containing scum, miscellaneous substances and the like to be collected in the depression 10 and reliably collected outside. it can.

[0023]

As described above, according to the first aspect of the present invention, the oil / water separation is carried out only by supplying the oil / water and the undiluted waste water containing the scum, scum and the like contained therein to the separation tank. Can be performed efficiently. Further, the oil containing scum, miscellaneous substances and the like can be easily collected outside simply by rotating the oil discharge pipe. Further, since the supplied undiluted wastewater does not fly out, the oily water can be surely recovered and separated even on a rocking ship or the like.

According to the invention of claim 2, according to claim 1,
In addition to obtaining the same effect as described above, the oil particles are retained in the whisker net, so that the oil / water separation efficiency can be improved.

Further, according to the third and fourth aspects of the present invention,
Since the oil discharge pipe is rotated by a sensor that detects and operates the water level in the separation tank and a motor that operates in conjunction with the sensor, the collected oil can be reliably collected.

[Brief description of the drawings]

FIG. 1 is a vertical sectional view of an oil-water recovery / separation device according to the present invention in a partially omitted state.

FIG. 2 is a plan view of the oil / water recovery / separation device shown in FIG.

FIG. 3 is a side view of the oil / water recovery / separation device shown in FIG.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 oil / water recovery / separation device 3 wastewater undiluted solution 4 recovery pump 5 separation tank 5 a upper chamber 5 b lower chamber 6 water discharge pipe 7 oil discharge pipe 11 raw liquid recovery pipe 18 whisker net 20 air pipe (means of air blowing)

Claims (4)

(57) [Claims] 1. A separation tank which separates an undiluted solution supplied from a recovery pump for collecting undiluted undiluted effluent mixed with oily water and scum, miscellaneous substances and the like into oil and water according to a specific gravity difference. A concave portion is formed upward to divide the inside of the separation tank into an upper chamber and a lower chamber, and one end of a stock solution recovery pipe connected to the recovery pump is attached to the upper chamber. A water discharge pipe is disposed from below the upper part of the upper chamber, and the tip of the water discharge pipe is projected outside the upper chamber, and an oil discharge pipe is rotatably attached to the recess of the separation tank. An oil / water recovery / separation device characterized by the following. 2. A separation tank which separates the undiluted effluent supplied from a recovery pump for collecting undiluted effluent mixed with oily water and scum and miscellaneous substances contained therein into oil and moisture by a specific gravity difference. A concave portion is formed upward to divide the inside of the separation tank into an upper chamber and a lower chamber, and one end of a stock solution recovery pipe connected to the recovery pump is attached to the upper chamber. An air blowing means is provided for filling the whisker net in which metal whiskers are formed in a net shape and for blowing air into the whisker net, and a water discharge pipe is arranged from below the lower chamber to above the upper chamber. And its tip projects outside the upper chamber,
An oil / water recovery / separation device, wherein an oil discharge pipe is rotatably attached to a recess of the separation tank. 3. The oil / water recovery / separation device according to claim 1, wherein the oil discharge pipe has an L-shape and is provided so as to rotate by a driving force of a motor. 4. The oil / water recovery / separation apparatus according to claim 3, wherein said motor is provided in conjunction with a sensor which detects and operates a water level in the separation tank.