KR102380566B1 - Oil-water separating system - Google Patents

Abstract

The present invention relates to an oil-water separation system.
According to an embodiment of the present invention, when an oil-water separation device is connected to a mixed fluid storage tank or near a mixed fluid storage tank in which a mixed fluid such as bottom wastewater of a general ship is stored, there is an effect of allowing only the water in the mixed fluid to be discharged to the outside.
In addition, only water in addition to oil and impurities among the mixed fluid stored in the mixed fluid storage tank can be selectively discharged and removed, thereby increasing the storage efficiency of the mixed fluid storage tank.

Description

Oil-Water Separation System {OIL-WATER SEPARATING SYSTEM}

The present invention relates to an oil-water separation system.

Generally, water, oil, lubricating oil, or other impurities collect in the lower part of the ship to form bottom wastewater. The oily mixture is the bilge.

In Korea alone, more than tens of thousands of tons of bottom wastewater are generated annually, but the amount collected is very insignificant and most of them are directly discharged into the sea.

Oil or lubricating oil in the bottom wastewater is known to be the main culprit of marine pollution, and when the bottom wastewater is discharged, the oil must be removed through an oil-water separator or brought to land for treatment.

However, it is reported that most of the bottom wastewater containing oil is discharged into the sea or river without permission because the performance of the oil-water separator provided on the ship is not good, and the cost and treatment process on land are not simple.

Therefore, it is very important to have an oil-water separation device that can purify water to a level that satisfies seawater discharge standards by effectively and simply removing oil from the bottom wastewater in such ships.

On the other hand, in order to discharge water other than oil in the oil mixture stored in the oil-water separator, it is necessary to attach a filter with high oil-water separation efficiency to the discharge line of the oil-water separator and selectively discharge only the water in the oil-water separator.

In addition, when oil is separated from ship-bottom wastewater, various impurities such as green algae and soil are mixed and recovered during the process, such as water and oil. As a result, a means for primary filtering of these impurities in the oil-water separation filter device is required.

The means of removing the separated oil during oil-water separation is also important.

In a small-scale device such as an oil-water separator, a device that effectively removes only oil when the separated oil becomes floating should also be provided.

Korean Patent Laid-Open Patent No. 10-1998-033085 'Filter for oil-water separation'

Accordingly, the present invention has been devised in the background described above, and when an oil-water separation device is connected to a mixed fluid storage tank or near a mixed fluid storage tank in which a mixed fluid such as bottom wastewater is stored in a general ship bottom, only the water in the mixed fluid can be discharged to the outside. There is a purpose.

In addition, it is possible to selectively discharge and remove only water in addition to oil and impurities from the mixed fluid stored in the mixed fluid storage tank, thereby increasing the storage efficiency of the mixed fluid storage tank.

The object of the present invention is not limited thereto, and other objects not mentioned will be clearly understood by those skilled in the art from the following description.

In order to achieve this object, an embodiment of the present invention includes: an internal storage tank 41 in which a mixed fluid containing water and oil supplied from the outside is stored and separated while confining impurities contained in the mixed fluid; and an external storage tank 43 for filtering the mixed fluid introduced from the internal storage tank 41 and discharging purified water to the outside; provides an oil-water separation system comprising a.

In addition, the external storage tank 43 includes a first water outlet 47 provided with a hydrophilic filter 45 for separating water from the mixed fluid introduced from the internal storage tank 41 and discharging to the outside; It provides an oil-water separation system, characterized in that.

In addition, the external storage tank 43 is formed to be spaced apart from the first water outlet part 47 by a predetermined interval, and a lipophilic filter for separating oil from the mixed fluid introduced from the internal storage tank 41 and discharging to the outside. (49) provided with a second water outlet (51); provides an oil-water separation system comprising a.

In addition, the external storage tank 43 provides an oil-water separation system, characterized in that the second water outlet 51 is formed above the first water outlet 47 .

In addition, it is located in the upper opening of the internal storage tank 41, and separates the water and oil except for the impurities from the mixed fluid supplied to the internal storage tank 41. Mixing for discharging to the external storage tank 43 Filter 53; provides an oil-water separation system comprising a.

In addition, the external storage tank 43 includes a first water outlet 47 provided with a hydrophilic filter 45 for separating water from the mixed fluid introduced from the internal storage tank 41 and discharging to the outside; It provides an oil-water separation system, characterized in that.

In addition, the external storage tank 43 is formed to be spaced apart from the first water outlet part 47 by a predetermined interval, and a lipophilic filter for separating oil from the mixed fluid introduced from the internal storage tank 41 and discharging to the outside. (49) provided with a second water outlet (51); provides an oil-water separation system comprising a.

In addition, the intermediate partition 57 located between the internal storage tank 41 and the external storage tank 43 and provided with a hydrophilic filter 55 for blocking the impurities in the mixed fluid supplied from the internal storage tank 41; It provides an oil-water separation system comprising a.

According to an embodiment of the present invention, when an oil-water separation device is connected to a mixed fluid storage tank or near a mixed fluid storage tank in which a mixed fluid such as bottom wastewater of a general ship is stored, there is an effect of allowing only the water in the mixed fluid to be discharged to the outside.

In addition, since only water in addition to oil and impurities among the mixed fluid stored in the mixed fluid storage tank can be selectively discharged and removed, there is an effect of increasing the storage efficiency of the mixed fluid storage tank.

1 is a schematic diagram of an oil-water separation system according to a first embodiment of the present invention.
2 is a schematic diagram of an oil-water separation system according to a second embodiment of the present invention.
3 is a schematic diagram of an oil-water separation system according to a third embodiment of the present invention.
4 is a view showing an example of an oil-water separation filter device in the oil-water separation system.
5 is a cross-sectional view taken along line AA of the oil-water separation filter device of FIG. 4 .
6 is a view showing another example of the oil-water separation filter device in the oil-water separation system.
7 is a cross-sectional view taken along line BB of the oil-water separation filter device of FIG. 6 .
8 is a schematic diagram of an oil-water separation system according to a fourth embodiment of the present invention.
9 is a schematic diagram of an oil-water separation system according to a fifth embodiment of the present invention.
10 is a schematic diagram of an oil-water separation system according to a sixth embodiment of the present invention.
11 is a schematic diagram of an oil-water separation system according to a seventh embodiment of the present invention.

Hereinafter, some embodiments of the present invention will be described in detail with reference to exemplary drawings. In adding reference numerals to the components of each drawing, it should be noted that the same components are given the same reference numerals as much as possible even though they are indicated on different drawings. In addition, in describing the present invention, if it is determined that a detailed description of a related known configuration or function may obscure the gist of the present invention, the detailed description thereof will be omitted.

In addition, in describing the components of the present invention, terms such as first, second, A, B, (a), (b), etc. may be used. These terms are only for distinguishing the elements from other elements, and the essence, order, or order of the elements are not limited by the terms. When it is described that a component is “connected”, “coupled” or “connected” to another component, the component may be directly connected or connected to the other component, but another component is formed between each component. It should be understood that elements may also be “connected,” “coupled,” or “connected.”

1 is a schematic diagram of an oil-water separation system according to a first embodiment of the present invention.

2 is a schematic diagram of an oil-water separation system according to a second embodiment of the present invention.

3 is a schematic diagram of an oil-water separation system according to a third embodiment of the present invention.

4 is a view showing an example of an oil-water separation filter device in the oil-water separation system.

5 is a cross-sectional view taken along line A-A of the oil-water separation filter device of FIG. 4 .

6 is a view showing another example of the oil-water separation filter device in the oil-water separation system.

7 is a cross-sectional view taken along line B-B of the oil-water separation filter device of FIG. 6 .

8 is a schematic diagram of an oil-water separation system according to a fourth embodiment of the present invention.

9 is a schematic diagram of an oil-water separation system according to a fifth embodiment of the present invention.

10 is a schematic diagram of an oil-water separation system according to a sixth embodiment of the present invention.

11 is a schematic diagram of an oil-water separation system according to a seventh embodiment of the present invention.

As shown in these figures, the oil-water separation system according to an embodiment of the present invention includes: a mixed fluid storage tank 13 having an inlet 11 through which an external mixed fluid is introduced on one side; and an oil-water separation filter device 17 that is provided in the water outlet 15 formed on the other side of the mixed fluid storage tank 13, filters the introduced mixed fluid and discharges purified water to the outside.

Hereinafter, an embodiment of the present invention will be described based on an example applied to a system for filtering bottom wastewater of a ship in particular.

The mixed fluid storage tank 13 has an inlet 11 formed on one side and an outlet 15 formed on the other side.

The external mixed fluid (bottom wastewater) flows into the mixed fluid storage tank 13 through the inlet 11 of the mixed fluid storage tank 13 .

Meanwhile, the mixed fluid storage tank 13 may have a partition wall 18 therein.

More specifically, the mixed fluid storage tank 13 includes a first partition wall 19 extending from the upper inner surface and the end of which is not connected to the inner bottom surface.

The first partition wall 19 may, for example, be provided in a flat plate shape.

In addition, the mixed fluid storage tank 13 is spaced apart from the first partition wall 19 by a predetermined distance in the direction toward the inlet 11 so as to form a zigzag flow path until the mixed fluid reaches the oil-water separation filter device 17 . , it extends from the inner bottom surface, and includes a second partition wall 21 whose end is not connected to the upper inner surface.

The second partition wall 21 may be provided, for example, in a flat plate shape.

Due to this structure, the ship-bottom wastewater introduced into the mixed fluid storage tank 13 forms a zigzag flow path until it reaches the oil-water separation filter device 17, so that it can undergo a pre-filtering process.

That is, when the ship-bottom wastewater moves along the zigzag flow path, relatively heavy micro-materials (soil, green algae, moss, etc.) settle on the bottom surface of the mixed fluid storage tank 13, so that the pre-filtering effect can be achieved will become

Meanwhile, a filter module 23 may be further provided between the end of the first partition wall 19 and the inner bottom surface of the mixed fluid storage tank 12 .

Here, the filter module 23 may include a hydrophilic or super-hydrophilic filter to prevent oil components in the bottom wastewater from passing under the first bulkhead 19 .

Of course, as shown in FIG. 1 , the filter module 23 may be formed to be convex in a direction toward the second partition wall 21 .

As such, the filter module 23 is formed to be convex in the direction toward the second partition wall 21, so that foreign substances do not accumulate on the outer surface of the filter module 23 and fall to the bottom surface of the mixed fluid storage tank 12, whereby the filter The performance maintenance time of the module 23 may be sufficiently secured.

In addition, the oil-water separation system according to an embodiment of the present invention may further include a waste oil absorber provided on the upper side of the mixed fluid storage tank 13 .

As an example, the waste oil absorber may be made of a porous material such as a sponge, and the waste oil absorber collects oil that forms a layer on the upper layer of the mixed fluid introduced into the mixed fluid storage tank 13 .

More specifically, the first waste oil sucker 25 may be provided at an inner upper portion of the mixed fluid storage tank 13 between the first partition wall 19 and the inner surface of the mixed fluid storage tank 13 .

In addition, the second waste oil absorber 27 may be provided on the inner upper portion of the mixed fluid storage tank 13 opposite to the first waste oil absorber 25 with the second partition wall 21 interposed therebetween.

Next, the oil-water separation filter device 17 is provided in the water outlet 15 formed on the other side of the mixed fluid storage tank 13 .

The oil-water separation filter device 17 filters the introduced ship-bottom wastewater to discharge purified water to the outside.

When describing an example of such an oil-water separation filter device 17 in detail, the oil-water separation filter device 17 has a space inside so that the primary filtered fluid among the external mixed fluid flows into the inside while blocking the external impurities. (S) a pre-filter module 103 is formed; and a first hydrophilic filter module 105 provided inside the pre-filter module 103 and secondarily filtering the first-filtered fluid.

Hereinafter, the first hydrophilicity is denoted as superhydrophilicity, and the second hydrophilicity is denoted as hydrophilicity.

First, hydrophilicity may be defined as a physical property of a material having a contact angle with water of less than 90°, and superhydrophilicity may be defined as a physical property of a material having a contact angle with water of 15° or less.

The pre-filter module 103 blocks and filters external impurities (impurities in the bottom wastewater).

Here, the external impurities may be, for example, impurities such as soil, moss, and green algae mixed in the mixed fluid (ship bottom wastewater).

The pre-filter module 103 has a space S formed on the inside so that the first-filtered fluid among the external mixed fluid flows into the inside.

This pre-filter module 103 is formed of a hydrophilic material, and functions to block external impurities as well as to separate oil and water.

On the other hand, the pre-filter module 103 is formed in a protruding structure. As shown in the drawings, the pre-filter module 103 has an open outlet 101 on one side and a round-type closed on the other side. formed into a three-dimensional structure.

Due to such a protruding structure, foreign substances do not accumulate on the outer surface of the pre-filter module 103 and fall down, whereby the performance maintenance time of the pre-filter module 103 can be sufficiently secured.

Next, the super-hydrophilic filter module 105 is provided inside the pre-filter module 103 .

This super-hydrophilic filter module 105 filters the primary filtered fluid secondary.

That is, the superhydrophilic filter module 105 is to secondarily filter residual impurities (oil) among the fluid firstly filtered through the pre-filter module 103, so that only water can be discharged to the outside.

For example, the superhydrophilic filter module 105 may be formed of a mesh structure of a surface nanostructure having superhydrophilicity.

The super-hydrophilic filter module 105 has a surface nanostructure having super oil repellency in water, and has a porous structure, so that it may have a moisture content of about 10%.

On the other hand, the super hydrophilic filter module 105, the core portion 301 composed of a hydrophilic material; and a shell portion 303 made of a super-hydrophilic material surrounding the outer circumferential surface of the core portion 301 .

The core part 301 is made of a hydrophilic material.

Here, the hydrophilic material is an example, natural fiber (cotton, pulp, cellulose, rayon), polymer-based (acrylic, polypropylene (PP), polystyrene (PS), polyurethane (PU), acrylic), or metal-based, etc. am.

Meanwhile, the core part 301 may be formed in a porous structure surface-treated to have hydrophilicity.

The shell part 303 surrounds the outer peripheral surface of the core part 301 .

The shell part 303 is made of a super-hydrophilic material.

On the other hand, the oil-water separation filter device 17 may further include a mesh network support unit 107 for supporting the super-hydrophilic filter module 105 outward in the inner space S of the pre-filter module 103 . .

As such, by further including the mesh network support unit 107 in the oil-water separation filter device, shape deformation, damage, etc. of the pre-filter module 103, the super-hydrophilic filter module 105, etc. can be prevented even at high pressure applied by the mixed fluid, impurities, etc. can

On the other hand, the oil-water separation filter device 17 is preferably provided at a higher position than the end of the first partition wall (19).

In addition, as shown in FIGS. 2 and 3 , in the oil-water separation system according to the second and third embodiments of the present invention, the mixed fluid storage tank 13 is formed in a direction toward the inlet 11 . It includes a second partition wall 21' spaced apart from the first partition wall 19 by a predetermined distance, extending from the upper inner surface, and having an end not connected to the inner bottom surface.

That is, unlike the oil-water separation system shown in FIG. 1 , in the case of the oil-water separation system shown in FIGS. 2 and 3 , the mixed fluid introduced into the mixed fluid storage tank 13 through the inlet 11 is the first As it moves through the bottom of the partition wall 19 and the second partition wall 21', it is sent to the water outlet 15 equipped with the oil-water separation filter device 17 .

On the other hand, as in the oil-water separation system shown in FIGS. 2 and 3 , the mesh network filter module 31 is provided between the end of the second partition wall 21 ′ and the inner bottom surface of the mixed fluid storage tank 13 . can

The mesh network filter module 31 prevents impurities in the mixed fluid (bottom wastewater) from entering the filter module 23 .

An emulsion of water and oil can be 'when oil is in water' and 'when water is in oil'. The liquid that does this is called the dispersed phase.

On the other hand, in the case of the oil-water separation system shown in FIG. 3 , at least one spray nozzle 33 is provided on the inner surface of the second partition wall 21 ′ and the mixed fluid storage tank 13 facing each other.

The jet nozzle 33 jets water at high speed toward the mixed fluid.

Of course, although not shown in the drawings, the injection nozzle 33 shown in the oil-water separation system of FIG. 3 may be applied to the oil-water separation system shown in FIG. It may be provided on or both.

On the other hand, in the case of the oil-water separation system shown in FIGS. 2 and 3 , with the second partition wall 21 ′ interposed therebetween, the second waste oil absorber 27 and the opposite side to the mixed fluid storage tank 13 are provided on the inner upper portion and a third waste sucker (29).

The third waste oil absorber 29 may be provided in the same structure as the first and second waste oil absorbers 25 and 27 described above.

On the other hand, referring to FIG. 8 , in the oil-water separation system according to the fourth embodiment of the present invention, a mixed fluid (propaganda wastewater) containing water and oil supplied from the outside is stored, and impurities contained in the mixed fluid are trapped while Separating the internal storage tank (41); and an external storage tank 43 for filtering the mixed fluid introduced from the internal storage tank 41 and discharging purified water to the outside.

The internal storage tank 41 has a storage space in which the mixed fluid is stored, and an opening is formed in the upper side so that the storage space is exposed to the outside.

Accordingly, the mixed fluid supplied from the upper side of the internal storage tank 41 can be introduced into the storage space, and when a predetermined amount or more of the mixed fluid is supplied, the mixed fluid in the storage space is discharged to the external storage tank 43 through the upper opening.

At this time, the internal storage tank 41 may be configured to discharge water and oil in the mixed fluid to the external storage tank 43 and to separate while confining impurities contained in the mixed fluid.

Then, the external storage tank 43 filters the mixed fluid introduced from the internal storage tank 41 to discharge purified water to the outside.

The external storage tank 43 has a storage space (S') in which the mixed fluid is stored inside the same as the internal storage tank 41, and an opening may be formed on the upper side so that the storage space (S') is exposed to the outside. .

Here, the internal storage tank 41 may be disposed on the storage space S' of the external storage tank 43 as shown in the drawings.

In addition, the external storage tank 43 includes a first water outlet 47 provided with a hydrophilic filter 45 for separating water from the mixed fluid introduced from the internal storage tank 41 and discharging to the outside.

Here, the hydrophilic filter 45 may have the same structure as that of the oil-water separation filter device 17 described above except for a different installation location.

In addition, the external storage tank 43 is spaced apart from the first water outlet part 47 by a predetermined interval, and a lipophilic filter 49 for separating oil from the mixed fluid introduced from the internal storage tank 41 and discharging to the outside is provided. The provided second water outlet 51; further includes.

Here, in the external storage tank 43 , the second water outlet 51 is formed above the first water outlet 47 .

As such, since the second water outlet 51 is formed above the first water outlet 47, the water provided at the lower side of the mixed fluid flowing into the storage space S' is filtered by the hydrophilic filter 45 and removed. It may be discharged to the outside through the first water outlet 47 , and the oil disposed on the upper side of the water may be separated by the lipophilic filter 49 and discharged to the outside through the second water outlet 51 .

Here, the lipophilic filter 49 has water repellency with a contact angle with water of 130° or more, and a contact angle with oil (oil) of 20° or less, thereby rejecting water and adsorbing oil.

The lipophilic filter 49 may be formed in the form of a nonwoven fabric or a mesh, and the material constituting it is a composite material made of a synthetic material such as PE, PP, PET, PVC, PVDF, PTFE, or a combination thereof.

On the other hand, as shown in FIG. 9 , the oil-water separation system according to the fifth embodiment of the present invention is located in the upper opening of the internal storage tank 41 , except for impurities in the mixed fluid supplied to the internal storage tank 41 . A mixing filter 53 for separating water and oil and discharging it to an external storage tank 43; includes.

That is, unlike the oil-water separation system shown in FIG. 8, in the case of the oil-water separation system according to the fifth embodiment shown in FIG. It further includes a mixing filter 53 configured to discharge to the outside, and to prevent impurities having a large particle size compared to water and oil from being discharged to the outside.

Here, the mixed fluid discharged to the outside through the mixing filter 53 flows into the storage space S' of the external storage tank 43. At this time, the water is separated by the hydrophilic filter 45 and the first water outlet ( 47), and the oil is separated by the lipophilic filter 49 and discharged through the second water outlet 51.

That is, the external storage tank 43 according to the fifth embodiment, and the first water outlet portion 47 provided with the hydrophilic filter 45; and the first water outlet portion 47 and the lipophilic filter ( 49) is provided with a second water outlet 51; includes.

Meanwhile, the mixing filter 53 may be formed in a form in which the hydrophilic filter 59 and the lipophilic filter 61 are combined so that water and oil are separated and discharged to the outside.

Here, the lipophilic filter 61 may be disposed on the upper side of the hydrophilic filter 59, which permeates the oil floating above the water due to the characteristics of water and oil through the lipophilic filter 61 to discharge to the outside. am.

As such, the mixing filter 53 in the form in which the hydrophilic filter 59 and the lipophilic filter 61 are combined is provided on the upper side of the internal storage tank 41 to which the mixed fluid mixed with water, oil and impurities is supplied, During the primary filtering of the mixed fluid supplied to the storage tank 41 , impurities may be filtered out from the mixed fluid and water and oil excluding impurities may be discharged to the external storage tank 43 .

Subsequently, referring to FIG. 10 , the oil-water separation system according to the sixth embodiment of the present invention is located between the internal storage tank 41 and the external storage tank 43 and impurities in the mixed fluid supplied from the internal storage tank 41 . Intermediate partition wall 57 provided with a hydrophilic filter 55 for blocking the; includes.

That is, unlike the oil-water separation system shown in FIG. 9 , in the case of the oil-water separation system according to the sixth embodiment shown in FIG. 10 , the mixing filter 53 is not provided at the upper end of the partition wall of the internal storage tank 41 , A hydrophilic filter 55 for blocking impurities while dividing the storage space S' between the internal storage tank 41 and the external storage tank 43 into a first space S1 and a second space S2 is provided It includes an intermediate partition wall (57).

Here, the hydrophilic filter 55 may be provided inside the transmission hole 63 formed at the lower side of the intermediate partition wall 57 .

That is, the mixed fluid discharged from the internal storage tank 41 flows into the first space S1 of the external storage tank 43 and then into the second space S2 through the penetration hole 63 of the intermediate partition wall 57 . At this time, impurities not caught in the internal storage tank 41 are filtered out by the hydrophilic filter 55 .

And, among the mixed fluid introduced into the second space (S2), water is separated by the hydrophilic filter (45) and discharged through the first water outlet (47), and the oil is separated by the lipophilic filter (49) to the second It is discharged through the water outlet (51).

As such, the intermediate partition wall 57 provided with the hydrophilic filter 55 for blocking impurities is provided, so that impurities that have not been filtered after the primary filtering by the internal storage tank 41 are removed through the hydrophilic filter 55. By differential filtering, there is an effect that impurities can be separated more efficiently.

On the other hand, referring to FIG. 11 , in the oil-water separation system according to the seventh embodiment of the present invention, the mixing filter 53 according to the fifth embodiment and the intermediate partition wall 57 according to the sixth embodiment are all characterized in that it is applied.

That is, in the oil-water separation system according to the seventh embodiment of the present invention, among the mixed fluid supplied to the internal storage tank 41 , impurities are filtered by the mixing filter 53 and water and oil are transferred to the first space S1 . is brought in

At this time, impurities introduced into the first space S1 without being filtered by the mixing filter 53 are secondarily filtered by the hydrophilic filter 55 provided in the intermediate partition 57, so that only water and oil are It flows into the second space (S2).

On the other hand, the oil-water separation system according to the seventh embodiment of the present invention further includes an oil suction unit 67 that sucks and collects the oil discharged to the second water outlet 51 .

The oil suction unit 67 has a suction unit 73 that stores oil and forms a negative pressure for sucking oil, and a suction flow path through which oil flows therein, one end is connected to the suction unit 73 and the other end is formed. includes an oil suction pipe 75 connected to the second water outlet 51 .

In this way, the mixing filter 53 and the intermediate partition wall 57 provided with the hydrophilic filter 55 are provided, so that impurities in the mixed fluid supplied to the internal storage tank 41 are first filtered through the mixing filter 53. It can be filtered, and impurities introduced into the first space (S1) without being filtered through the mixing filter 53 can be filtered out by secondary filtering through the hydrophilic filter 55 provided in the intermediate partition wall 57. .

In addition, there is an effect that the oil discharged through the second water outlet 51 of the external storage tank 43 can be easily collected through the oil suction unit 67 .

As described above, according to the embodiments of the present invention, when an oil-water separation device is connected to a mixed fluid storage tank or near a mixed fluid storage tank in which a mixed fluid such as bottom wastewater is stored under a general ship, only water in the mixed fluid can be discharged to the outside. It has the effect of making

In addition, since only water in addition to oil and impurities among the mixed fluid stored in the mixed fluid storage tank can be selectively discharged and removed, there is an effect of increasing the storage efficiency of the mixed fluid storage tank.

In the above, even though all the components constituting the embodiment of the present invention are described as being combined or operated in combination, the present invention is not necessarily limited to this embodiment. That is, within the scope of the object of the present invention, all the components may operate by selectively combining one or more.

The above description is merely illustrative of the technical spirit of the present invention, and various modifications and variations will be possible without departing from the essential characteristics of the present invention by those skilled in the art to which the present invention pertains. Therefore, the embodiments disclosed in the present invention are not intended to limit the technical spirit of the present invention, but to explain, and the scope of the technical spirit of the present invention is not limited by these embodiments. The protection scope of the present invention should be construed by the following claims, and all technical ideas within the scope equivalent thereto should be construed as being included in the scope of the present invention.

11: inlet
13: mixed fluid storage tank
15: water outlet
17: oil-water separation filter device
19: first bulkhead
21,21' : 2nd bulkhead
23: filter module
25: the first waste lactator
27: 2nd waste lactator
29: 3rd waste lactator
31: mesh network filter module
33: spray nozzle
41: internal storage tank
43: external storage tank
45: hydrophilic filter
47: first water outlet
49: lipophilic filter
51: second water outlet
53: mixed filter
55: hydrophilic filter
57: middle bulkhead
59: hydrophilic filter
61: lipophilic filter
63: through hole
65: impurity suction part
67: oil suction part
73: suction part
75: oil suction pipe
101: outlet
103: pre-filter module
105: super hydrophilic filter module
107: mesh network support part
301: core part
303: shell part

Claims (8)

delete delete delete delete an internal storage tank 41 in which a mixed fluid containing water and oil supplied from the outside is stored and separated while confining impurities contained in the mixed fluid;
an external storage tank 43 filtering the mixed fluid introduced from the internal storage tank 41 and discharging purified water to the outside; and
A mixing filter ( 53);
Oil-water separation system comprising a. 6. The method of claim 5,
The external storage tank 43,
a first water outlet (47) provided with a hydrophilic filter (45) for separating water from the mixed fluid introduced from the internal storage tank (41) and discharging it to the outside;
Oil-water separation system comprising a. 7. The method of claim 6,
The external storage tank 43,
A second water outlet provided with a lipophilic filter 49 formed to be spaced apart from the first water outlet portion 47 by a predetermined distance, and for separating oil from the mixed fluid introduced from the internal storage tank 41 and discharging it to the outside. (51);
Oil-water separation system comprising a. an internal storage tank 41 in which a mixed fluid containing water and oil supplied from the outside is stored and separated while confining impurities contained in the mixed fluid;
an external storage tank 43 filtering the mixed fluid introduced from the internal storage tank 41 and discharging purified water to the outside; and
an intermediate partition 57 positioned between the internal storage tank 41 and the external storage tank 43 and provided with a hydrophilic filter 55 for blocking the impurities in the mixed fluid supplied from the internal storage tank 41;
Oil-water separation system comprising a.

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