CN114146453B - A method and device for treating oily wastewater based on aggregation-induced demulsification - Google Patents

Abstract

The invention discloses an oily wastewater treatment method and device based on aggregation-induced emulsion breaking, which mainly aim at the treatment of oily emulsion wastewater. The special-shaped filter element has the advantages of high demulsification efficiency by a physical method, no secondary pollution, resource utilization of oil products in wastewater, more superiority than the traditional filling filter element, and higher integration level of an integrated vertical device.

Description

A method and device for treating oily wastewater based on aggregation-induced demulsification

technical field

The invention relates to the technical field of oil-water separation, in particular to an oily wastewater treatment method and device based on aggregation-induced demulsification, mainly aimed at the deep purification treatment of emulsified oil, and has a wide range of applications and can be used in industries such as oil and gas exploitation, petroleum and petrochemical, coal chemical, and machining treatment of oily wastewater.

Background technique

Oily wastewater is widely derived from many industrial processes and activities. How to further separate oily wastewater simply and efficiently is a hot issue that researchers in this field have always paid attention to. In actual production and life, the separation requirements of various emulsified oils (0.1-10 μm) are more urgent but the separation is more difficult. Currently commonly used emulsified oil separation methods are mainly divided into the following three categories according to different processing principles, chemical methods, biological methods, and physical methods. Among them, the chemical method will produce waste sludge, which will cause secondary pollution to the environment, and eventually the oil product cannot be recovered, which will cause resource waste and other problems, while the biological method relies heavily on microbial activity and has high requirements for the concentration of pollutants in the water body, and the treatment cycle is long. unstable. In contrast, physical methods have some natural advantages, are environmentally friendly and do not require the addition of chemicals.

For this reason, the Chinese invention patent whose notification number is CN106422420B discloses a kind of horizontal oil-water phase device. The equipment mainly includes flow stabilizing parts, coalescing parts and gravity settling area. The flow stabilization components include feed components and anti-rotation baffles. The feeding member is located at the vertical position of the head of the tank body, which is conducive to the uniform distribution of the water inlet. The present invention adopts this structure to slow down the flow velocity of the mixed phase, effectively avoid the disturbance of the water flow, and improve the overall coalescence effect. In addition, the Chinese invention patent with the notification number CN101972559A discloses an oil-water separation device and an oil-water separation method. The horizontal coalescing oil-water separator includes stainless steel corrugated plate packing and polypropylene wire mesh corrugated packing, and additional And the cyclone device assists in the separation of oil and water. The utility model patent with notification number CN213313490U discloses a vertical oil-water separator that is easy to clean, but it has the problems of single structure, low integration and poor separation accuracy. The Chinese invention patent with the notification number CN108658172A discloses a vertical oil-water separation device, which only uses coalescing components for oil-water separation based on the principle of gravity sedimentation.

In the existing technical solutions, although the internal structure and auxiliary components of the equipment have been improved and optimized, the equipment structure is all horizontal, and the auxiliary components and gravity settlement area lead to bulky equipment, which cannot be applied to places with limited space such as offshore oil and gas platforms. The existing vertical equipment also has the problem of low integration. In addition, in the above schemes, the coalescence material uses hard stainless steel corrugated plates or some other wire mesh fillers, and the final separation accuracy of the equipment is low.

Therefore, it is necessary to develop an oily wastewater treatment method and device based on aggregation-induced demulsification, to form a highly integrated, compact structure, simple and efficient equipment that can separate oily emulsion wastewater only by physical means, and to deeply purify oily wastewater through environmentally friendly treatment methods. Finally, the equipment and methods are applied to actual production and life.

Contents of the invention

The purpose of the present invention is to provide an oily wastewater treatment method and device based on aggregation-induced demulsification based on the actual demand for green treatment of highly emulsified oily wastewater. The method is mainly aimed at the treatment of wastewater containing heavy oil or light oil emulsion. The device involved is composed of a liquid inlet, a water distributor, a liquid inlet chamber, a special-shaped filter element, a mesh bottom plate, an aggregation-induced demulsification packing, a slope special-shaped end, an internal oil collection pipeline, an oil collection bag, a corrugated inclined plate layer, and a super Hydrophilic-oleophobic filter element, water outlet, oil drain port, oil drain valve, pressure gauge, lifting hand wheel snap-fit connection, limiter, sealing flat pad, filled with emulsion oil droplets through the inside of the special-shaped filter element The process of adsorption, coalescence, growth, and desorption that occurs during the demulsification filler can achieve demulsification, and the use of corrugated sloping plate layers and super-hydrophilic-oleophobic filter elements further improves the separation efficiency. The invention can realize high-efficiency demulsification by physical methods, without secondary pollution, and can utilize oil products in waste water as resources. The special-shaped filter element has more advantages than the traditional filled filter element, and the integration degree of the integrated vertical device is also higher.

A method for treating oily wastewater based on aggregation-induced demulsification according to the present invention, the oily wastewater described in the method includes heavy oil or light oil, and the involved device is composed of a liquid inlet (1), a water distribution device (2), liquid inlet chamber (3), special-shaped filter element (4), mesh bottom plate (5), aggregation-induced demulsification filler (6), inclined-plane special-shaped end (7), internal oil collection pipeline (8), collection Oil bag (9), corrugated inclined plate layer (10), superhydrophilic-oleophobic filter element (11), water outlet (12), oil discharge port (13), oil discharge valve (14), first pressure gauge ( 15a), the second pressure gauge (15b), the third pressure gauge (15c), the lifting hand wheel (16), the first snap-in connection (17a), the second snap-in connection (17b), the third snap-fit connecting piece (17c), limit piece (18), support leg (19), and sealing flat pad (20), wherein the device for processing heavy oil is respectively equipped with a super-hydrophilic-oleophobic filter element (11), corrugated inclined plate layer (10), special-shaped filter element (4), connected with the corrugated inclined plate layer (10) through the second buckle-type connector (17b) at the upper end of the shaped filter element (4), the corrugated inclined plate The upper end of the layer (10) is provided with a super-hydrophilic-oleophobic filter element (11), and the lower end of the special-shaped filter element (4) is connected with the oil collection bag (9) through the first snap-in connector (17a). A liquid inlet chamber (3) is provided in the bag (9), and a water distributor (2) connected with the liquid inlet (1) is arranged in the liquid inlet chamber (3), and a The oil discharge port (13) is fixed at the lower end of the special-shaped filter element (4) by a mesh bottom plate (5), and the upper end of the special-shaped filter element (4) is a beveled special-shaped end (7), and the special-shaped filter element (4) is respectively equipped with a collection Induced demulsification filler (6), the internal oil collection pipeline (8) passes through the special-shaped filter element (4) and goes straight to the oil collection bag (9), and connects the top of the super-hydrophilic-oleophobic filter element (11) through a third snap-fit Part (17c) is connected with the top cover that is respectively provided with water outlet (12), the third pressure gauge (15c) and lifting hand wheel (16), and concrete operation is carried out according to the following steps:

a. After ensuring that the first snap-fit connector (17a), the second snap-fit connector (17b) and the third snap-fit connector (17c) are well sealed, connect the liquid inlet (1) and the outlet Adjust the water port (12) to the open state, close the oil discharge valve (14) at the bottom, and import the waste water containing heavy oil to be treated from the liquid inlet (1) with the help of external power, and pass through the net of the water distributor (2). The orifice plate is evenly dispersed into the liquid inlet chamber (3), and the pressure gauge (15a) is controlled between 0.1-0.3MPa;

b. The liquid in the liquid inlet chamber (3) enters the special-shaped filter element (4) through the mesh bottom plate (5), and small oil occurs when the oily wastewater contacts the aggregation-induced demulsification filler (6) inside the special-shaped filter element (4) The droplets coalesce and become large-grained oil droplets, and then flow out from the inclined-plane profiled end (7) with the water phase. At this time, the heavy and large-grained oil droplets flow into the oil collection bag (9) through the internal oil collection pipeline (8) under the action of gravity ) to collect;

c. The large and small oil droplets that did not settle in time in step b continue to move upward along the hydraulic direction with the water phase. and small oil droplets pass through the corrugated plate inclined layer (10);

d. When the water phase and small oil droplets passing through the corrugated inclined plate layer (10) in step c contact the outer surface of the superhydrophilic-oleophobic filter element (11), the water phase will flow from the superhydrophilic-oleophobic filter element (11) ) into the inner side, and then discharged from the opened water outlet (12), the small oil droplets are intercepted by the super-hydrophilic-oleophobic filter element (11), since the number of oil droplets after interception increases continuously, and the frequency of mutual collision increases, the small oil droplets The droplets finally gather and become larger, and enter the oil collection bag (9) through the internal oil collection pipeline (8), and then control the oil discharge valve (14) to open the oil discharge port (13) to discharge;

The device for processing light oil is respectively provided with a super-hydrophilic-oleophobic filter element (11), a corrugated inclined plate layer (10), and a special-shaped filter element (4). Type connector (17b) is connected with the corrugated inclined plate layer (10), and the lower end of the corrugated inclined plate layer (10) is provided with a super-hydrophilic-oleophobic filter element (11), and the upper end of the special-shaped filter element (4) passes through the first card The buckle connector (17a) is connected to the oil collection bag (9), and the liquid inlet chamber (3) is provided in the oil collection bag (9), and the liquid inlet chamber (3) is provided with a connection with the liquid inlet (1) The water distributor (2) is provided with an oil discharge port (13) on the top of the oil collection bag (9), and a mesh bottom plate (5) is fixed on the upper end of the special-shaped filter element (4), and the lower end of the special-shaped filter element (4) is Inclined special-shaped end (7), the special-shaped filter element (4) is respectively equipped with aggregation-induced demulsification packing (6), and the internal oil collection pipeline (8) passes through the special-shaped filter element (4) to the oil collection bag (9). The bottom of the super-hydrophilic-oleophobic filter element (11) is connected to the base of the water outlet (12), the third pressure gauge (15c) and the legs (19) through the third snap-fit connector (17c), The specific operation is carried out according to the following steps:

a. After ensuring that the first snap-fit connector (17a), the second snap-fit connector (17b) and the third snap-fit connector (17c) are well sealed, connect the liquid inlet (1) and the outlet Adjust the water port (12) to the open state, close the oil discharge valve (14) at the top, and import the waste water containing heavy oil to be treated from the liquid inlet (1) with the help of external power, and pass through the net of the water distributor (2). The orifice plate is evenly dispersed into the liquid inlet chamber (3), and the pressure gauge (15a) is controlled between 0.1-0.3MPa;

b. The liquid in the liquid inlet chamber (3) enters the special-shaped filter element (4) through the mesh bottom plate (5), and small oil occurs when the oily wastewater contacts the aggregation-induced demulsification filler (6) inside the special-shaped filter element (4) The droplets coalesce and become large-grained oil droplets, and then flow out from the inclined-plane profiled end (7) with the water phase. At this time, the light-weight large-grained oil droplets flow into the oil collection bag (9) through the internal oil collection pipeline (8) under the action of buoyancy ) to collect;

c. The large and small oil droplets that did not rise in time in step b continued to move downward along the hydraulic direction with the water phase, and when passing through the corrugated plate slope (10), the large oil droplets that were not collected in time were further strengthened to float, And the water phase and small oil droplets pass through the corrugated plate inclined layer (10);

d. When the water phase and small oil droplets passing through the corrugated inclined plate layer (10) in step c contact the outer surface of the superhydrophilic-oleophobic filter element (11), the water phase will flow from the superhydrophilic-oleophobic filter element (11) ) into the inner side, and then discharged from the opened water outlet (12), the small oil droplets are intercepted by the super-hydrophilic-oleophobic filter element (11), since the number of oil droplets after interception increases continuously, and the frequency of mutual collision increases, the small oil droplets The droplets eventually gather and become larger, and enter the oil collection bag (9) through the internal oil collection pipeline (8), and then control the oil discharge valve (14) to open the oil discharge port (13) to discharge.

An oily wastewater treatment device based on aggregation-induced demulsification, the device includes a device for processing heavy oil or a device for processing light oil, and the device for processing heavy oil is composed of a liquid inlet (1), a water distributor (2), Liquid inlet chamber (3), special-shaped filter element (4), mesh bottom plate (5), aggregation-induced demulsification filler (6), beveled special-shaped end (7), internal oil collection pipe (8), oil collection bag (9) , corrugated inclined plate layer (10), super hydrophilic-oleophobic filter element (11), water outlet (12), oil discharge port (13), oil discharge valve (14), first pressure gauge (15a), second Pressure gauge (15b), third pressure gauge (15c), lifting handwheel (16), first snap-in connector (17a), second snap-in connector (17b), third snap-in connector (17c), limit piece (18), support leg (19), sealing flat pad (20) is formed, and superhydrophilic-oleophobic filter element (11), corrugated inclined plate layer (10), The special-shaped filter element (4) is connected with the corrugated sloping plate layer (10) through the second buckle-type connector (17b) at the upper end of the special-shaped filter core (4), and the upper end of the corrugated sloping plate layer (10) is provided with a super-hydrophilic- The oil-repellent filter element (11) is connected to the oil collection bag (9) through the first snap-in connector (17a) at the lower end of the special-shaped filter element (4), and the bottom plate (5) of the special-shaped filter element (4) is fixed at the lower end of the special-shaped filter element (4). The upper end of the filter element (4) is a detachable slope shaped end (7), and the top of the super-hydrophilic-oleophobic filter element (11) is respectively provided with a water outlet (12) through a third buckle-type connector (17c). , The third pressure gauge (15c) is connected to the top cover of the lifting hand wheel (16), and the oil discharge port (13) at the bottom of the device is connected to the oil collection bag (9);

The light oil treatment device is composed of a liquid inlet (1), a water distributor (2), a liquid inlet chamber (3), a special-shaped filter element (4), a mesh bottom plate (5), an aggregation-induced demulsification filler (6 ), oblique special-shaped end (7), internal oil collection pipe (8), oil collection bag (9), corrugated inclined plate layer (10), super-hydrophilic-oleophobic filter element (11), water outlet (12), drain Oil port (13), oil drain valve (14), first pressure gauge (15a), second pressure gauge (15b), third pressure gauge (15c), lifting handwheel (16), first snap-fit connection piece (17a), the second buckle-type connector (17b), the third buckle-type connector (17c), the limiter (18), the leg (19), and the sealing pad (20), in the device A superhydrophilic-oleophobic filter element (11), a corrugated inclined plate layer (10), and a special-shaped filter element (4) are respectively arranged inside, and the second buckle-type connector (17b) is connected to the corrugated filter element (4) at the lower end of the special-shaped filter element (4). The inclined plate layer (10) is connected, and the lower end of the corrugated inclined plate layer (10) is provided with a super-hydrophilic-oleophobic filter element (11), and the upper end of the special-shaped filter element (4) is connected with the first buckle-type connector (17a) The oil collection bag (9) is connected, the upper end of the special-shaped filter element (4) is fixed with the mesh bottom plate (5), and the lower end of the special-shaped filter element (4) is a detachable slope special-shaped end (7). ) is connected to the base of the water outlet (12) and the third pressure gauge (15c) through the third snap-fit connector (17c), and the oil outlet (13) on the top of the device is connected to the oil collection bag ( 9) Connect.

The bottom of the corrugated inclined plate layer (10) is provided with a limiter (18), and a second pressure gauge (15b) is arranged on the outer wall of the corrugated inclined plate layer (10), and the height of the corrugated inclined plate layer (10) is 10-20cm , the distance between adjacent inclined plates in the corrugated plate inclined layer (10) is 2-8mm, and the included angle between the inclined plates and the horizontal direction is 40°-80°.

The mesh bottom plate (5) has an aperture of 0.3-10mm and a thickness of 3-10mm. The angle between the slope shaped end (7) and the horizontal plane is 5°-10° and the thickness is 3-10mm. The demulsification filler (6) is induced, and the internal oil collection pipeline (8) passes through the special-shaped filter element (4) and leads directly to the oil collection bag (9).

The oil collecting bag (9) is provided with a liquid inlet chamber (3), the oil collecting bag (9) is adjacent to the liquid inlet chamber (3) but does not communicate with each other, and the liquid inlet chamber (3) is provided with a water distributor (2) , the liquid inlet (1) is connected to the water distributor (2), and a first pressure gauge (15a) is provided on the outer wall of the oil collecting bag (9).

A method and device for treating oily wastewater based on aggregation-induced demulsification according to the present invention. In this method, industrial wastewater is pumped from the water inlet through the water distributor, so that the oily wastewater enters the special-shaped filter element evenly, and the demulsification filler in the special-shaped filter element It has lipophilic and hydrophobic properties, and the material has a porous structure with a high oil absorption rate; when oily wastewater passes through the special-shaped filter element, due to the lipophilic properties of the material surface, small oil droplets first wet and adhere to the surface of the material, and then other oil droplets that flow through are further absorbed. The surface of the material adheres or collides with the previously adsorbed oil droplets; as the oily wastewater is continuously pumped in, the oil droplets continue to adhere, coalesce, and grow up. When the oil droplets coalesce to a sufficient size, the fluid drag and Under the action of gravity or buoyancy, de-agglomeration induces demulsification filler; at this time, the coalesced liquid passes through the inclined layer of corrugated plate that strengthens separation, and accelerates the settling/floating process of large-particle oil droplets. Part of the small oil droplets that are not completely separated pass through the super-hydrophilic-oleophobic separation filter element, the small oil droplets are effectively isolated, collide and coalesce, and then settle/float autonomously, realizing the purely physical method and high-precision separation of oil-containing emulsions.

The special-shaped filter core (4) in the described device, the corrugated inclined plate layer (10), the super-hydrophilic-oleophobic filter core (11) has a structure for easy disassembly, and the effective filter area can be maximized by using the special-shaped filter core (4), and can Realize the overall disassembly, replacement, and maintenance of the internal aggregation-induced demulsification packing (6); the slope shaped end (7) is a detachable slope shaped end (7), the angle between the slope and the horizontal plane of the shaped filter element is 5°-10°, and the thickness 3-10mm, which is more conducive to the large particle oil droplets after coalescence to enter the oil collection bag (9) through the internal oil collection pipeline (8), which improves the oil collection efficiency and separation efficiency, and is a full-life filter element that can be reused many times member, the height of the inclined corrugated plate (10) is 10-20cm, the distance between adjacent inclined plates in the corrugated plate inclined layer (10) is 2mm-8mm, and the angle between the inclined plate and the horizontal direction is 40°-80° , using the multilayer structure of the corrugated inclined plate layer (10), the separation speed and effect of the large-particle oil droplets after coalescence are improved, and the work load of the superhydrophilic-oleophobic separation filter element (11) is reduced, which can promote the oil droplets to quickly Collect, shorten the length of the settling section at the same time, reduce the overall volume of the equipment, and reduce the overall production cost of the equipment; the super-hydrophilic-oleophobic filter element (11) is a multi-layer winding filter element of the outside-in and inside-out type, which can efficiently separate particles with a particle size between Oil droplets below 10 μm. Further intercepting small oil droplets, the intercepted small oil droplets will collide with each other again and become larger to achieve secondary aggregation and settlement

A method and device for treating oily wastewater based on aggregation-induced demulsification according to the present invention, compared with existing horizontal equipment, the present invention adopts a vertical device with its own settling space, which greatly reduces the equipment footprint; The device integrates a special-shaped filter element (4), a corrugated inclined plate layer (10), and a super-hydrophilic-oleophobic filter element (11) to achieve different functions. The overall structure is highly compact, which greatly reduces the number of equipment in the oil-water separation process and improves The oil-water separation efficiency reduces the equipment manufacturing cost and operating cost at the same time.

Description of drawings

1 is a schematic diagram of the overall structure of an oily (heavy) wastewater treatment device based on aggregation-induced demulsification;

2 is a schematic diagram of the overall structure of an oily (light) wastewater treatment device based on aggregation-induced demulsification;

Figure 3a is an overall schematic diagram of the structure of a special-shaped filter element;

Fig. 3b is a schematic cross-sectional view of a special-shaped filter element structure;

Figure 3c is a schematic top view of the structure of the special-shaped filter element;

Figure 4a is a top view of a superhydrophilic-oleophobic filter element;

Figure 4b is a schematic diagram of the superhydrophilic-oleophobic filter element structure.

In the figure, 1-liquid inlet, 2-water distributor, 3-liquid inlet chamber, 4-special-shaped filter element, 5-mesh bottom plate, 6-aggregation-induced demulsification filler, 7-slanted shaped end, 8-inner collection Oil pipeline, 9-oil collection bag, 10-corrugated inclined plate layer, 11-super-hydrophilic-oleophobic filter element, 12-water outlet, 13-oil drain port, 14-oil drain valve, 15-pressure gauge, 16- Lifting handwheel, 17-snap-on quick installation, 18-limiting piece, 19-leg, 20-sealing flat pad.

Detailed ways

The present invention will be described in further detail below according to the accompanying drawings. The following examples are only used to illustrate the technical solutions of the present invention more clearly, but not to limit the protection scope of the present invention.

The method and device for treating oily wastewater based on aggregation-induced demulsification disclosed by the invention can separate and purify heavy oily emulsion wastewater and light oily emulsion wastewater.

Example 1

A method for treating oily wastewater based on aggregation-induced demulsification according to the present invention, the heavy oil treatment device involved in the method is composed of a liquid inlet 1, a water distributor 2, a liquid inlet chamber 3, a special-shaped filter element 4, and a mesh Bottom plate 5, aggregate-induced demulsification filler 6, inclined-plane profiled end 7, internal oil collection pipeline 8, oil collection bag 9, corrugated inclined plate layer 10, super-hydrophilic-oleophobic filter element 11, water outlet 12, oil discharge port 13, Oil discharge valve 14, first pressure gauge 15a, second pressure gauge 15b, third pressure gauge 15c, lift hand wheel 16, first snap-in connector 17a, second snap-in connector 17b, third snap-in Type connecting piece 17c, limit piece 18, support leg 19, sealing flat pad 20 is composed of, superhydrophilic-oleophobic filter core 11, corrugated inclined plate layer 10, special-shaped filter core 4 are respectively arranged in the device, and special-shaped filter core 4 The upper end is connected to the corrugated sloping plate layer 10 through the second snap-fit connector 17b. The upper end of the corrugated sloping plate layer 10 is provided with a super-hydrophilic-oleophobic filter element 11, and the lower end of the special-shaped filter element 4 is passed through the first snap-fit connector. 17a is connected with the oil collecting bag 9, and the liquid inlet chamber 3 is arranged in the oil collecting bag 9, and the water distributor 2 connected with the liquid inlet 1 is arranged in the liquid inlet chamber 3, and the bottom of the oil collecting bag 9 is provided with a drain The oil port 13 is fixed at the lower end of the special-shaped filter element 4 by the mesh bottom plate 5, and the upper end of the special-shaped filter element 4 is a beveled special-shaped end 7. The special-shaped filter element 4 is respectively equipped with aggregation-induced demulsification packing 6, and the internal oil collection pipeline 8 passes through it. The special-shaped filter element 4 is directly connected to the oil collection bag 9, and the top of the super-hydrophilic-oleophobic filter element 11 is connected with the top cover of the water outlet 12, the third pressure gauge 15c and the lifting hand wheel 16 through the third snap-fit connector 17c To connect, follow the steps below:

a. When ensuring that the first snap-in connector 17a, the second snap-in connector 17b and the third snap-in connector 17c are well sealed, adjust the liquid inlet 1 and the water outlet 12 to open and close The oil discharge valve 14 introduces the waste water containing heavy oil to be treated from the liquid inlet 1 by means of external power, and evenly disperses it into the liquid inlet chamber 3 through the mesh plate of the water distributor 2, and controls the pressure gauge 15a at 0.1 Between -0.3MPa;

b. The liquid in the liquid inlet chamber 3 enters the special-shaped filter element 4 through the mesh bottom plate 5, and when the oily wastewater touches the aggregation-induced demulsification filler 6 inside the special-shaped filter element 4, small oil droplets aggregate and become large oil droplets , and then flow out from the inclined-plane profiled end 7 with the water phase, at this time, the heavy and large-particle oil droplets flow into the oil collection bag 9 through the internal oil collection pipeline 8 to collect under the action of gravity;

c. The large and small oil droplets that have not settled in time in step b continue to move upward along the hydraulic direction with the water phase. When passing through the corrugated plate slope 10, the large particle oil droplets that have not settled in time are further strengthened, and the water phase and Small oil droplets pass through the corrugated plate inclined layer 10;

d. When the water phase and small oil droplets passing through the corrugated inclined plate layer 10 in step c contact the outer surface of the superhydrophilic-oleophobic filter element 11, the water phase enters from the outer side of the superhydrophilic-oleophobic filter element 11 to the inner side , and then discharged from the opened water outlet 12, the small oil droplets are intercepted by the super-hydrophilic-oleophobic filter element 11, because the number of oil droplets after interception continues to increase, and the frequency of mutual collisions increases, the small oil droplets eventually coalesce and become larger, and pass through the internal The oil collection pipeline 8 enters the oil collection bag 9, and the control oil discharge valve 14 is opened to discharge from the oil discharge port 13;

When the device is in shutdown state, the water outlet 12 and the oil discharge port 13 need to be opened at the same time to discharge the oil smoothly, so as to avoid the formation of negative pressure inside the equipment and cause the oil discharge to be unclean;

After the device has been in operation for a period of time, due to the influence of unavoidable impurities, it needs to be backwashed. At this time, it is necessary to ensure that the oil discharge port 13 is closed, and the liquid inlet 1 and water outlet 12 are kept open. The clean water is introduced from the water outlet 12 through external power, and the reading of the pressure gauge 15c is controlled between 0.2-0.6MPa, and the super-hydrophilic-oleophobic filter element 11, the corrugated plate inclined layer 10 and the special-shaped filter element 4 are washed in sequence, The total time is controlled within 10-20 minutes, and finally the dirty water is discharged from the liquid inlet 1, and the backwashing operation ends.

Example 2

A method for treating oily wastewater based on aggregation-induced demulsification according to the present invention, the method involves a light oil treatment device consisting of a liquid inlet 1, a water distributor 2, a liquid inlet chamber 3, a special-shaped filter element 4, and a mesh bottom plate 5. Aggregation-induced demulsification packing 6, inclined-plane profiled end 7, internal oil collection pipeline 8, oil collection bag 9, corrugated inclined plate layer 10, super-hydrophilic-oleophobic filter element 11, water outlet 12, oil discharge port 13, drain Oil valve 14, first pressure gauge 15a, second pressure gauge 15b, third pressure gauge 15c, lifting hand wheel 16, first snap-in connector 17a, second snap-in connector 17b, third snap-in The connecting piece 17c, the stopper 18, the leg 19, and the flat sealing pad 20 are composed of a superhydrophilic-oleophobic filter element 11, a corrugated inclined plate layer 10, and a special-shaped filter element 4. At the lower end of the special-shaped filter element 4 Connect with the corrugated inclined plate layer 10 through the second snap-fit connector 17b, the lower end of the corrugated inclined plate layer 10 is provided with a super-hydrophilic-oleophobic filter element 11, and the upper end of the special-shaped filter element 4 is passed through the first snap-fit connector 17a Connected with the oil collecting bag 9, there is a liquid inlet chamber 3 in the oil collecting bag 9, a water distributor 2 connected with the liquid inlet 1 is arranged in the liquid inlet chamber 3, and an oil discharge is arranged on the top of the oil collecting bag 9 Port 13 is fixed on the upper end of the special-shaped filter element 4 by a mesh bottom plate 5, and the lower end of the special-shaped filter element 4 is a sloped special-shaped end 7. The special-shaped filter element 4 is respectively equipped with aggregation-induced demulsification fillers 6, and the internal oil collection pipeline 8 passes through the special-shaped The filter element 4 is directly connected to the oil collecting bag 9, and is connected to the base with the water outlet 12 and the third pressure gauge 15c at the bottom of the super-hydrophilic-oleophobic filter element 11 through the third buckle-type connector 17c. The specific operation is as follows conduct:

a. When ensuring that the first snap-in connector 17a, the second snap-in connector 17b and the third snap-in connector 17c are well sealed, adjust the liquid inlet 1 and the water outlet 12 to open and close The oil discharge valve 14 introduces the waste water containing light oil to be treated from the liquid inlet 1 with the help of external power, and evenly disperses it into the liquid inlet chamber 3 through the mesh plate of the water distributor 2, and controls the pressure gauge 15a at 0.1 Between -0.3MPa;

b. The liquid in the liquid inlet chamber 3 enters the special-shaped filter element 4 through the mesh bottom plate 5, and when the oily wastewater touches the aggregation-induced demulsification filler 6 inside the special-shaped filter element 4, small oil droplets aggregate and become large oil droplets , and then flow out from the inclined-plane profiled end 7 along with the water phase, at this time, the light and large-particle oil droplets flow into the oil collection bag 9 through the internal oil collection pipeline 8 under the action of buoyancy to collect;

c. The large and small oil droplets that did not float up in time in step b continue to move downward along the hydraulic direction with the water phase. Drops pass through the corrugated plate inclined layer 10;

d. When the water phase and small oil droplets passing through the corrugated inclined plate layer 10 in step c contact the outer surface of the superhydrophilic-oleophobic filter element 11, the water phase enters from the outer side of the superhydrophilic-oleophobic filter element 11 to the inner side, Then it is discharged from the opened water outlet 12, and the small oil droplets are intercepted by the super-hydrophilic-oleophobic filter element 11. After the interception, the number of oil droplets continues to increase, and the frequency of mutual collisions increases, and the small oil droplets eventually coalesce and become larger. The oil pipeline 8 enters the oil collection bag 9, and the control oil discharge valve 14 is opened to discharge from the oil discharge port 13;

After the device has been in operation for a period of time, due to the influence of unavoidable impurities, it needs to be backwashed. At this time, it is necessary to ensure that the oil discharge port 13 is closed, and the liquid inlet 1 and water outlet 12 are kept open. The clean water is introduced from the water outlet 12 through external power, and the reading of the pressure gauge 15c is controlled between 0.2-0.6MPa, and the super-hydrophilic-oleophobic filter element 11, the corrugated plate inclined layer 10 and the The special-shaped filter element 4 is controlled within 10-20 minutes in total, and finally the dirty water is discharged from the liquid inlet 1, and the backwashing operation is completed.

Example 3

An oily wastewater treatment device based on aggregation-induced demulsification according to the present invention is a device for processing heavy oil, as shown in Figure 1. It is composed of a liquid inlet 1, a water distributor 2, a liquid inlet chamber 3, and a special-shaped filter element. 4. Mesh bottom plate 5, aggregation-induced demulsification packing 6, slope shaped end 7, internal oil collection pipeline 8, oil collection bag 9, corrugated inclined plate layer 10, super-hydrophilic-oleophobic filter element 11, water outlet 12, drain Oil port 13, oil discharge valve 14, first pressure gauge 15a, second pressure gauge 15b, third pressure gauge 15c, lifting hand wheel 16, first snap-in connector 17a, second snap-in connector 17b, The third buckle-type connector 17c, stopper 18, supporting leg 19, and sealing flat pad 20 are formed, and superhydrophilic-oleophobic filter element 11, corrugated inclined plate layer 10, and special-shaped filter element 4 are respectively provided in the device. The upper end of the special-shaped filter element 4 is connected with the corrugated sloping plate layer 10 through the second buckle-type connector 17b. The buckle connector 17a is connected with the oil collecting bag 9, the bottom plate 5 is fixed at the lower end of the special-shaped filter element 4, and the upper end of the special-shaped filter element 4 is a detachable inclined-plane special-shaped end 7, which passes through the third The buckle-type connector 17c is connected with the top cover respectively provided with the water outlet 12, the third pressure gauge 15c and the lifting hand wheel 16, and the oil discharge port 13 at the bottom of the device is connected with the oil collecting bag 9;

The bottom of the corrugated sloping plate layer 10 is provided with a stopper 18, and the outer wall of the corrugated sloping plate layer 10 is provided with a second pressure gauge 15b. The distance between the plates is 2-8mm, and the angle between the inclined plate and the horizontal direction is 40°-80°;

The mesh bottom plate 5 has an aperture of 0.3-10mm and a thickness of 3-10mm. The angle between the inclined special-shaped end 7 and the horizontal plane is 5°-10°, and the thickness is 3-10mm. The special-shaped filter element 4 is respectively provided with aggregation-induced demulsification fillers 6, The internal oil collection pipeline 8 passes through the special-shaped filter element 4 and leads directly to the oil collection bag 9;

The oil collecting bag 9 is provided with a liquid inlet chamber 3, and the oil collecting bag 9 is adjacent to the liquid inlet chamber 3 but not communicated with each other. The liquid inlet chamber 3 is provided with a water distributor 2, and the liquid inlet 1 is connected to the water distributor 2. A first pressure gauge 15a is provided on the outer wall of the oil collecting bag 9;

As shown in Figure 1, the liquid inlet 1 is connected to the water distributor 2, the water distributor 2 is inside the liquid inlet chamber 3, the liquid inlet chamber 3 is connected to the lower end of the special-shaped filter element 4, and the lower end of the special-shaped filter element 4 is a welded and fixed mesh bottom plate 5, The special-shaped filter element 4 is filled with aggregation-inducing demulsification packing 6, and the detachable inclined-plane shaped end 7 can be opened to replace the aggregation-inducing demulsification packing 6. The internal oil collection pipeline 8 passes through the special-shaped filter element 4 and directly leads to the oil collection bag 9, and the oil collection The bottom of the package 9 is provided with an oil discharge port 13, the upper end of the special-shaped filter element 4 is arranged with a corrugated inclined plate layer 10, the upper end of the corrugated inclined plate layer 10 is provided with a super-hydrophilic-oleophobic filter element 11, and the top of the device is provided with a water outlet 12;

In the first stage, the oily wastewater enters the water distributor 2 through the liquid inlet 1, so that the liquid is dispersed in the liquid inlet chamber 3 to ensure a more uniform initial distribution, increase the utilization rate of the special-shaped filter element 4 and reduce local scaling and liquid ditch The possibility of flow; evenly distributed oily wastewater enters from the mesh bottom plate 5 at the lower end of the special-shaped filter element 4, and when the demulsification filler 6 is induced by aggregation, due to the lipophilicity of the material surface, small oil droplets first wet and adhere to the material surface, and then Other oil droplets that flow through further adhere to the surface of the material or collide with the previously adsorbed oil droplets; as the oily wastewater is continuously pumped in, the oil droplets continue to adhere, coalesce, and grow up. When it is large enough, under the action of fluid drag, buoyancy or gravity, it will separate from the aggregation-induced demulsification filler 6; the heavy and large oil droplets will flow down along the slope shaped end 7 and enter the internal oil collection pipeline 8, and finally the oil droplets will be Collected in the oil collection bag 9, the remaining large-particle oil droplets and water that have not been settled and collected in time will pass through the corrugated sloping plate layer 10;

In the second stage, part of the unsettled oil droplets and water flowing out from the inclined-plane special-shaped end 7 coalesce and then pass through the corrugated inclined plate layer 10, and the structure of the corrugated inclined plate layer 10 multi-layer plate is used to increase the size of the coalesced large-particle oil droplets. The separation speed and effect, and the remaining small particles of oil droplets and water that cannot be quickly settled and collected will pass through the superhydrophilic-oleophobic separation filter element 11;

In the third stage, the structure of the super-hydrophilic-oleophobic separation filter element 11 is a multi-layer wound filter element of the outside-in and inside-out type; The rest of the small oil droplets in the wastewater that cannot be settled and collected quickly will be effectively intercepted by the super-hydrophilic-oleophobic separation filter element 11, and the water will flow from the outside of the hydrophilic-oleophobic separation filter element 11 into the interior and finally pass through the water outlet 12 to complete the separation;

After the device has been running for a period of time, if it is necessary to carry out backwashing operation to restore the overall processing efficiency of the equipment, the liquid inlet 1 and water outlet 12 can be replaced and the backwashing water can be passed in. The flushing time is controlled at 10-20min, and the flushing flow rate is 2-5 times that of normal treatment of oily wastewater.

Example 4

The light oil treatment device is composed of a liquid inlet 1, a water distributor 2, a liquid inlet chamber 3, a special-shaped filter element 4, a mesh bottom plate 5, an aggregation-induced demulsification filler 6, a slope special-shaped end 7, and an internal oil collection pipeline 8 , oil collection bag 9, corrugated inclined plate layer 10, super hydrophilic-oleophobic filter element 11, water outlet 12, oil discharge port 13, oil discharge valve 14, first pressure gauge 15a, second pressure gauge 15b, third pressure Table 15c, lifting hand wheel 16, the first snap-in connector 17a, the second snap-in connector 17b, the third snap-in connector 17c, the limiter 18, the leg 19, and the flat sealing pad 20, The device is respectively provided with a super-hydrophilic-oleophobic filter element 11, a corrugated inclined plate layer 10, and a special-shaped filter element 4, and the lower end of the special-shaped filter element 4 is connected with the corrugated inclined plate layer 10 by a second buckle-type connector 17b. The lower end of the plate layer 10 is provided with a super-hydrophilic-oleophobic filter element 11, and the upper end of the special-shaped filter element 4 is connected with the oil collection bag 9 through the first buckle-type connector 17a, and the upper end of the special-shaped filter element 4 is fixed. The lower end of 4 is a detachable inclined-plane special-shaped end 7, which is connected to the base of the water outlet 12 and the third pressure gauge 15c through the third buckle-type connector 17c at the bottom of the super-hydrophilic-oleophobic filter element 11. The oil discharge port 13 on the top of the device is connected with the oil collecting bag 9;

The bottom of the corrugated sloping plate layer 10 is provided with a stopper 18, and the outer wall of the corrugated sloping plate layer 10 is provided with a second pressure gauge 15b. The distance between the plates is 2-8mm, and the angle between the inclined plate and the horizontal direction is 40°-80°;

The mesh bottom plate 5 has an aperture of 0.3-10mm and a thickness of 3-10mm. The angle between the inclined special-shaped end 7 and the horizontal plane is 5°-10°, and the thickness is 3-10mm. The special-shaped filter element 4 is respectively provided with aggregation-induced demulsification fillers 6, The internal oil collection pipeline 8 passes through the special-shaped filter element 4 and leads directly to the oil collection bag 9;

The oil collecting bag 9 is provided with a liquid inlet chamber 3, and the oil collecting bag 9 is adjacent to the liquid inlet chamber 3 but not communicated with each other. The liquid inlet chamber 3 is provided with a water distributor 2, and the liquid inlet 1 is connected to the water distributor 2. A first pressure gauge 15a is provided on the outer wall of the oil collecting bag 9;

As shown in Figure 2, the liquid inlet 1 is connected to the water distributor 2, the water distributor 2 is inside the liquid inlet chamber 3, the liquid inlet chamber 3 is connected to the upper end of the special-shaped filter element 4, and the upper end of the special-shaped filter element 4 is a welded and fixed mesh bottom plate 5, The special-shaped filter element 4 is filled with aggregation-inducing demulsification packing 6, and the detachable inclined-plane shaped end 7 can be opened to replace the aggregation-inducing demulsification packing 6. The internal oil collection pipeline 8 passes through the special-shaped filter element 4 and directly leads to the oil collection bag 9, and the oil collection The top of the bag 9 is provided with an oil discharge port 13, the lower end of the special-shaped filter element 4 is arranged with a corrugated inclined plate layer 10, the lower end of the corrugated inclined plate layer 10 is provided with a super-hydrophilic-oleophobic filter element 11, and the bottom of the device is provided with a water outlet 12;

In the first stage, the oily wastewater enters the water distributor 2 through the liquid inlet 1, so that the liquid is dispersed in the liquid inlet chamber 3 to ensure a more uniform initial distribution, increase the utilization rate of the special-shaped filter element 4 and reduce local scaling and liquid ditch The possibility of flow; evenly distributed oily wastewater enters from the mesh bottom plate 5 at the upper end of the special-shaped filter element 4, and when the demulsification filler 6 is induced by aggregation, due to the lipophilicity of the surface of the material, small oil droplets first wet and adhere to the surface of the material, and then Other oil droplets that flow through further adhere to the surface of the material or collide with the previously adsorbed oil droplets; as the oily wastewater is continuously pumped in, the oil droplets continue to adhere, coalesce, and grow up. When it is large enough, under the action of fluid drag, buoyancy or gravity, it will detach from aggregation-induced demulsification filler 6; the detached light and large oil droplets will flow upward along the inclined-plane shaped end 7 and enter the internal oil collection pipeline 8, and finally the oil droplets will be collected In the oil collection bag 9, the remaining large-particle oil droplets and water that have not been buoyed in time will pass through the corrugated sloping plate layer 10;

In the second stage, after coalescing and flowing out from the special-shaped end 7 of the inclined plane, part of the collected oil droplets that are not buoyant will pass through the corrugated sloping plate layer 10 with the water phase, and the low buoyancy height of the corrugated sloping plate layer 10 and the structure of the multi-layer plate are utilized. , to increase the buoyancy area, improve the separation speed and effect of large particle oil droplets after coalescence, and the remaining small particle oil droplets and water that cannot be collected quickly will be processed through the superhydrophilic-oleophobic separation filter element 11;

In the third stage, the structure of the super-hydrophilic-oleophobic separation filter element 11 is a multi-layer wound filter element of the outside-in and inside-out type; The rest of the small particles of oil droplets in the wastewater that cannot be quickly floated up and collected will be effectively intercepted by the super-hydrophilic-oleophobic separation filter element 11, and the water will enter the interior from the outside of the hydrophilic-oleophobic separation filter element 11 and flow out, and finally complete the separation through the water outlet 12 ;

After the device has been running for a period of time, if it is necessary to carry out backwashing operation to restore the overall processing efficiency of the equipment, the liquid inlet 1 and water outlet 12 can be replaced and the backwashing water can be passed in. The flushing time is controlled at 10-20min, and the flushing flow rate is 2-5 times that of normal treatment of oily wastewater.

The described embodiments are only some of the embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work are all Belong to the protection scope of the present invention.

Claims (5)

1. The oily wastewater treatment method based on aggregation-induced demulsification is characterized in that oily wastewater comprises heavy oil or light oil, the related device comprises a liquid inlet (1), a water distributor (2), a liquid inlet cavity (3), a special-shaped filter element (4), a mesh bottom plate (5), aggregation-induced demulsification filler (6), an inclined plane special-shaped end (7), an internal oil collecting pipeline (8), an oil collecting bag (9), a corrugated inclined plate layer (10), a super-hydrophilic-oleophobic filter element (11), a water outlet (12), an oil discharge port (13), an oil discharge valve (14), a first pressure gauge (15 a), a second pressure gauge (15 b), a third pressure gauge (15 c), a lifting hand wheel (16), a first buckling type connecting piece (17 a), a second buckling type connecting piece (17 b), a third buckling type connecting piece (17 c), a limiting piece (18), a support leg (19) and a sealing flat gasket (20), wherein the super-hydrophilic-oleophobic filter element (11), the buckling type inclined plate layer (10) and the special-shaped filter element (4) are arranged in the device for treating heavy oil, the super-hydrophilic-oleophobic filter element (4) is connected with the upper end (17 a) of the oil collecting pipe layer (10) through the first buckling type connecting piece (17 a), and the super-inclined plate layer (17 b), and the oil collecting filter element (17 b), and the oil collecting pipe (10) are connected with the oil collecting pipe (10) respectively, and the oil collecting pipe (10) through the oil collecting pipe (10) and the oil collecting pipe (10) are arranged on the upper end 9) Connect, be equipped with feed liquor chamber (3) in collection oil package (9), be equipped with water-locator (2) of being connected with inlet (1) in feed liquor chamber (3), bottom at collection oil package (9) is equipped with oil drain (13), be fixed by mesh bottom plate (5) at special-shaped filter core (4) lower extreme, the upper end of special-shaped filter core (4) is inclined plane special-shaped end (7), be equipped with respectively in special-shaped filter core (4) and be filled with gathering induction breakdown of emulsion filler (6), inside oil collecting pipeline (8) pass through special-shaped filter core (4) straight-through collection oil package (9), pass through third buckle formula connecting piece (17 c) and be equipped with delivery port (12) respectively on the top of super hydrophilic-oleophobic filter core (11), the top cap connection of third manometer (15 c) and promotion hand wheel (16), concrete operation is carried out according to the following step:

a. under the condition of ensuring that the first buckle type connecting piece (17 a), the second buckle type connecting piece (17 b) and the third buckle type connecting piece (17 c) are well sealed, the liquid inlet (1) and the water outlet (12) are adjusted to be in an opening state, the oil drain valve (14) at the bottom end is closed, heavy oil-containing wastewater to be treated is led in from the liquid inlet (1) by virtue of external power and uniformly dispersed into the liquid inlet cavity (3) through the mesh plate of the water distributor (2), and the first pressure gauge (15 a) is controlled to be between 0.1 and 0.3 MPa;

b. liquid in the liquid inlet cavity (3) enters the special-shaped filter element (4) through the mesh bottom plate (5), when oily wastewater contacts the aggregation induction demulsification filler (6) in the special-shaped filter element (4), small oil drops aggregate and become large oil drops, then the large oil drops flow out from the inclined plane special-shaped end (7) along with the water phase, and at the moment, heavy large oil drops flow into the oil collection bag (9) through the internal oil collection pipeline (8) under the action of gravity to be collected;

c. the large oil drops and the small oil drops which do not settle in time in the step b continuously move upwards along the hydraulic direction along with the water phase, when the large oil drops pass through the corrugated inclined plate layer (10), the large oil drops which do not settle in time are further strengthened to settle, and the water phase and the small oil drops penetrate out of the corrugated inclined plate layer (10);

d. when the water phase and the oil droplets penetrating out of the corrugated inclined plate layer (10) contact the outer surface of the super-hydrophilic-oleophobic filter element (11) in the step c, the water phase enters the inner side from the outer side of the super-hydrophilic-oleophobic filter element (11), then the water phase is discharged from the opened water outlet (12), the oil droplets are intercepted by the super-hydrophilic-oleophobic filter element (11), the oil droplets are finally gathered and enlarged due to the fact that the quantity of the intercepted oil droplets is continuously increased and the mutual collision frequency is increased, the oil droplets enter the oil collecting bag (9) through the internal oil collecting pipeline (8), and the oil discharging valve (14) is controlled to open the oil discharging port (13) to be discharged;

the device for treating the light oil is internally provided with a super-hydrophilic-oleophobic filter element (11), a corrugated inclined plate layer (10) and a special-shaped filter element (4) respectively, the lower end of the special-shaped filter element (4) is connected with the corrugated inclined plate layer (10) through a second buckle type connecting piece (17 b), the lower end of the corrugated inclined plate layer (10) is provided with the super-hydrophilic-oleophobic filter element (11), the upper end of the special-shaped filter element (4) is connected with an oil collecting bag (9) through a first buckle type connecting piece (17 a), a liquid inlet cavity (3) is arranged in the oil collecting bag (9), a water distributor (2) connected with the liquid inlet (1) is arranged in the liquid inlet cavity (3), an oil outlet (13) is arranged at the top of the oil collecting bag (9), a mesh bottom plate (5) is fixed at the upper end of the special-shaped filter element (4), the lower end of the special-shaped filter element (4) is an inclined plane end (7), aggregation inducing filler (6) is respectively arranged in the filter element (4), an internal oil collecting channel (8) penetrates through a buckle type oil collecting filter element (4), the special-shaped filter element (9), the lower end of the super-shaped filter element (11) is provided with a third buckle type connecting piece (15 c) and a water outlet (15) for connecting piece, and a third buckle type connecting piece (15) are arranged in the base:

a. under the condition that the first buckle type connecting piece (17 a), the second buckle type connecting piece (17 b) and the third buckle type connecting piece (17 c) are well sealed, the liquid inlet (1) and the water outlet (12) are adjusted to be in an open state, an oil discharge valve (14) at the top end is closed, heavy oil-containing wastewater to be treated is led in from the liquid inlet (1) by means of external power and uniformly dispersed into the liquid inlet cavity (3) through a mesh plate of the water distributor (2), and a first pressure gauge (15 a) is controlled to be between 0.1 and 0.3 MPa;

b. liquid in the liquid inlet cavity (3) enters the special-shaped filter element (4) through the mesh bottom plate (5), when oily wastewater contacts the aggregation induction demulsification filler (6) in the special-shaped filter element (4), oil drops aggregate and become large oil drops, then the oil drops flow out from the inclined plane special-shaped end (7) along with a water phase, and at the moment, light large oil drops flow into the oil collecting bag (9) through the internal oil collecting pipeline (8) under the action of buoyancy force to be collected;

c. in the step b, large oil drops and small oil drops which do not rise in time continue to move downwards along the hydraulic direction along with the water phase, when the large oil drops pass through the corrugated inclined plate layer (10), large oil drops which do not collect in time are further strengthened to rise in a floating manner, and the water phase and the small oil drops penetrate out of the corrugated inclined plate layer (10);

d. when the water phase and the oil drops penetrating out of the corrugated inclined plate layer (10) in the step c contact with the outer surface of the super-hydrophilic-oleophobic filter element (11), the water phase enters the inner side from the outer side of the super-hydrophilic-oleophobic filter element (11), and then the water phase is discharged from the opened water outlet (12), the oil drops are intercepted by the super-hydrophilic-oleophobic filter element (11), the quantity of the oil drops is continuously increased after the oil drops are intercepted, the mutual collision frequency is increased, the oil drops finally gather and grow, the oil drops enter the oil collecting bag (9) through the internal oil collecting pipeline (8), and the oil discharging valve (14) is controlled to open the oil discharging port (13) to discharge the oil.

2. The utility model provides an oily waste water treatment facilities based on induced breakdown of emulsion of gathering, its characterized in that the device is including handling heavy oil device or handling light oil device, it is by inlet (1) to handle heavy oil device, water-locator (2), feed liquor chamber (3), special-shaped filter core (4), mesh bottom plate (5), induced breakdown of emulsion filler (6) of gathering, inclined plane dysmorphism end (7), inside oil collecting pipeline (8), collect oil package (9), ripple inclined plate layer (10), super hydrophilic-oleophobic filter core (11), delivery port (12), oil drain port (13), oil drain valve (14), first manometer (15 a), second manometer (15 b), third manometer (15 c), promote hand wheel (16), first buckle formula connecting piece (17 a), second buckle formula connecting piece (17 b), third buckle formula connecting piece (17 c), locating part (18), landing leg (19), sealed flat pad (20) are constituteed, be equipped with super hydrophilic-oleophobic filter core (11) respectively in the device, buckle formula connecting piece (10 b) to one side, special-shaped filter core (4) is equipped with super hydrophilic-shaped filter core (17 a) and the last inclined plate layer connecting piece (10) of second inclined plate layer (10), the super hydrophilic-shaped filter core (17) is equipped with the super-inclined plate layer (10) on the device, the oily waste water collecting filter core (10) of the last inclined plate layer (17) of the special-shaped filter core (4), the super hydrophilic of the special-shaped filter core (17) is connected with the first inclined plate layer (17) is held, the first inclined plate layer (10), the filter core (17) is equipped with the special-inclined plate layer (17) is connected with the filter core (17) of the special-inclined plate layer (10), the filter core (10) of the special-inclined plate layer (17 b), the special-inclined plate layer (17) is connected with the filter core (17) of the super hydrophilic special-inclined plate layer (17) is connected with the special-shaped filter core (10), the special-shaped filter core (17) of gathering, the filter core (10) is connected to one side of the special-inclined plate layer (10), the filter core (17) is connected with the special-inclined plate layer (10), the super hydrophilic special-inclined plate layer (17) of the special-shaped filter core (10) of the filter core (17) of the special-inclined plate layer (10) of gathering, the filter core (17) is connected with the special-inclined plate layer (10), the special-shaped filter core (10) is connected with the special-inclined plate layer (10) of the special-shaped filter core (10), the special-inclined plate layer (10) of the special-shaped filter core (10) of the special-inclined plate layer (10) of gathering, the filter core (10) is connected with the special-inclined plate layer (10) is connected the special-inclined plate layer (9), the special-inclined plate layer (10) of the super hydrophilic special-inclined plate layer (10) of the special-inclined plate layer (10) of gathering, the special-inclined plate layer (9), the special-inclined plate layer (10) A mesh bottom plate (5) is fixed at the lower end of the special-shaped filter element (4), a detachable inclined special-shaped end (7) is arranged at the upper end of the special-shaped filter element (4), the top end of the super-hydrophilic-oleophobic filter element (11) is connected with a top cover which is respectively provided with a water outlet (12), a third pressure gauge (15 c) and a lifting hand wheel (16) through a third buckle type connecting piece (17 c), and an oil discharge port (13) at the bottom of the device is connected with an oil collecting bag (9);

the light oil treatment device is composed of a liquid inlet (1), a water distributor (2), a liquid inlet cavity (3), a special-shaped filter element (4), a mesh bottom plate (5), aggregation induction demulsification filler (6), an inclined plane special-shaped end (7), an internal oil collecting pipeline (8), an oil collecting bag (9), a corrugated inclined plate layer (10), a super-hydrophilic-oleophobic filter element (11), a water outlet (12), an oil outlet (13), an oil discharge valve (14), a first pressure gauge (15 a), a second pressure gauge (15 b), a third pressure gauge (15 c), a lifting hand wheel (16), a first buckle type connecting piece (17 a), a second buckle type connecting piece (17 b), a third buckle type connecting piece (17 c), a limiting piece (18), a supporting leg (19), a sealing flat pad (20), the super-hydrophilic-oleophobic filter element (11), the corrugated inclined plate layer (10) and the lifting hand wheel (16), wherein the super-hydrophilic-oleophobic filter element (11), the corrugated inclined plate layer (4) and the super-shaped filter element (11) are arranged in the device, the lower end of the filter element (4) is connected with the buckle type inclined plate (10) through the special-shaped filter element (17 b), the special-shaped filter element (11) is connected with the upper end of the super-shaped filter element (9) at the upper end of the special-shaped filter element (5), the lower end of the special-shaped filter element (4) is a detachable inclined plane special-shaped end (7), the bottom of the super-hydrophilic-oleophobic filter element (11) is connected with a base which is respectively provided with a water outlet (12) and a third pressure gauge (15 c) through a third snap-fit type connecting piece (17 c), and an oil discharge port (13) at the top of the device is connected with an oil collecting bag (9).

3. The bottom of the corrugated inclined plate layer (10) is provided with a limiting piece (18), the outer wall of the corrugated inclined plate layer (10) is provided with a second pressure gauge (15 b), the height of the corrugated inclined plate layer (10) is 10-20cm, the distance between adjacent inclined plates in the corrugated inclined plate layer (10) is 2-8mm, and the included angle between each inclined plate and the horizontal direction is 40-80 degrees.

4. The aperture of the mesh bottom plate (5) is 0.3-10mm, the thickness is 3-10mm, the included angle between the inclined plane special-shaped end (7) and the horizontal plane is 5-10 degrees, the thickness is 3-10mm, aggregation induction demulsification fillers (6) are respectively arranged in the special-shaped filter element (4), and an internal oil collecting pipeline (8) penetrates through the special-shaped filter element (4) and is directly communicated with an oil collecting bag (9).

5. A liquid inlet cavity (3) is arranged in the oil collecting bag (9), the oil collecting bag (9) is adjacent to the liquid inlet cavity (3) but not communicated with the liquid inlet cavity, a water distributor (2) is arranged in the liquid inlet cavity (3), the liquid inlet (1) is connected with the water distributor (2), and a first pressure gauge (15 a) is arranged on the outer wall of the oil collecting bag (9).

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