An oil-polluted water cleaning and separating device

Abstract

The utility model discloses an oil sewage clean dirt shunt device belongs to oil sewage treatment technical field, including liquid inlet device, main part, water seal, dirty liquid discharge device and clean water discharge device, and the liquid inlet device one end receives oil sewage mixed solution from the outside, and the other end passes through the main part and is located in the inside of main part, and the water seal also sets up in the inside of main part, and dirty liquid discharge device and clean water discharge device are located in the opposite two sides of main part, and all have one end to pass through the main part and be located in the inside of main part, and the other end all is located in the outside of main part, the utility model uses above -mentioned device, and the efficiency is low, and the response lag, and the operation reliability is poor and the accurate control is insufficient etc. problems that rely on manual operation in the process of oil sewage shunt switching, based on density principle, combining the principle of communicating vessel designs dirty liquid discharge device and clean water discharge device realizes the clean dirt shunt of dirty liquid, and does not need external energy consumption, meets the requirement of energy -conserving, low carbon, environmental protection under the background of "double carbon".

Description

Technical Field

[0001] This utility model relates to the field of oily wastewater treatment technology, and in particular to an oily wastewater separation device. Background Technology

[0002] During the production process, petrochemical plants inevitably experience leaks and spills, which generate pollutants. Additionally, rainwater and wastewater may be discharged from the plant boundary during rain, entering the wastewater treatment system, the external environment, or collection ponds.

[0003] The current standard practice involves installing separate valve wells for clean and wastewater at the outlet of the factory's wastewater discharge network. Two independent valves are used, one open and one closed, and the valves are manually operated. Typically, rainwater within 15 minutes is diverted into the wastewater system, and after 15 minutes, it is diverted to the clean water system. In case of leaks or emergency response, the clean water valve is closed while the wastewater valve is left open, allowing the wastewater to flow into the wastewater system for further treatment. However, this method has several problems, such as: the actual rainfall amount cannot be determined before it rains, especially in dry northern regions, where rain often stops before all valves are fully opened, causing operational inconvenience; some on-site personnel may take chances and fail to open or close valves promptly when rainfall suddenly increases, resulting in a large amount of clean water mixing into the wastewater system later, increasing the wastewater volume; valves may be switched to clean water too early, allowing oily wastewater to flow into the system and contaminate the clean water system; in case of leaks, large amounts of oil may flow out, and failure to close the clean water valve in time can cause oil to enter the clean water system and be discharged into the external environment. Utility Model Content

[0004] The purpose of this invention is to provide an oil-water wastewater separation device. Based on the density principle and combined with the principle of communicating vessels, a wastewater discharge device and a clean water discharge device are designed to achieve wastewater separation without external energy consumption, which meets the requirements of energy saving, low carbon and environmental protection under the "dual carbon" background.

[0005] To achieve the above objectives, this utility model provides an oil-water wastewater separation device, including an inlet device, a main body, a water seal, a wastewater discharge device, and a clean water discharge device. One end of the inlet device receives the oil-water mixture from the outside, and the other end passes through the main body and is located inside the main body. The water seal is also located inside the main body. The wastewater discharge device and the clean water discharge device are located on opposite sides of the main body, and each has one end passing through the main body and located inside the main body, while the other end is located outside the main body.

[0006] Preferably, the liquid inlet device includes a first liquid inlet pipe, a buffer filter tank, and a second liquid inlet pipe. One end of the first liquid inlet pipe receives the oil-water mixture from the outside, and the other end passes through the buffer filter tank and is located inside the buffer filter tank. One end of the second liquid inlet pipe is connected to the side of the buffer filter tank away from the first liquid inlet pipe, and a filter screen is provided at the connection point. The other end of the second liquid inlet pipe passes through the main body and is located inside the main body.

[0007] Preferably, the height of the buffer filter tank is less than 1m, and a sedimentation layer is provided at the bottom of the buffer filter tank. The height of the sedimentation layer is lower than the height of the filter screen. The outlet of the first inlet pipe is located inside the sedimentation layer and does not contact the bottom of the sedimentation layer.

[0008] Preferably, the main body includes a separating tank, a water injection pipe, and a vent pipe. The water injection pipe is perpendicular to the bottom surface of the separating tank, with one end of the water injection pipe located on the outside of the separating tank and the other end close to the bottom surface inside the separating tank. Similarly, the vent pipe is perpendicular to the bottom surface of the separating tank, with one end of the vent pipe located on the outside of the separating tank and the other end located at the top of the inside of the separating tank.

[0009] Preferably, the water seal is used to separate clean water from wastewater, and the water seal is located below the end of the second inlet pipe away from the buffer filter tank, and the water seal is horizontally set inside the separator.

[0010] Preferably, the wastewater discharge device includes a first discharge pipe and a wastewater float plug. The first discharge pipe includes an inlet pipe and a discharge pipe. The inlet pipe is located inside the separator and passes vertically through the water seal. One end of the inlet pipe is connected to the discharge pipe, and the other end is provided with a first blocking net. A wastewater control port is provided at the connection between the inlet pipe and the discharge pipe. The wastewater float plug is located inside the inlet pipe. An inlet net is provided on the side of the inlet pipe near the second inlet. One end of the inlet net is connected to the discharge pipe, and the other end passes through the water seal and is located below the water seal.

[0011] Preferably, the clean water discharge device includes a first drain pipe and a clean water float. The first drain pipe includes an inlet pipe and a drain pipe. One end of the inlet pipe is connected to the drain pipe, and the other end is provided with a clean water control port, which is located inside the separator and passes vertically through the water seal. The clean water float is located inside the inlet pipe. The horizontal part of the drain pipe is provided with a second blocking net inside and a shut-off valve outside.

[0012] Preferably, the horizontal height of the lowest side of the first drain pipe is not lower than the horizontal height of the highest side of the first drain pipe, and the lowest side of the first drain pipe is level with the water seal.

[0013] Preferably, both the sludge float and the clean water float are conical rubber plugs, and the bottom surfaces of the sludge float and the clean water float are far away from the sludge control port and the clean water control port, respectively. The density of the sludge float and the clean water float is less than the density of clean water, but greater than the density of oily sludge, and the counterweight can be adjusted.

[0014] Therefore, this utility model adopts an oil-water wastewater separation device with the above-mentioned structure. It designs a wastewater float and a clean water float based on the density principle and combines them with the principle of communicating vessels to achieve the separation of oil and wastewater. Moreover, it does not require external energy consumption and meets the requirements of energy saving, low carbon and environmental protection under the background of "dual carbon".

[0015] The technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of an oil-water wastewater separation device according to the present invention;

[0017] Figure 2 This is a schematic diagram of the wastewater discharge device of an oil-water wastewater separation device according to the present invention;

[0018] Figure 3 This is a schematic diagram of the clean water discharge device of an oily wastewater separation device according to the present invention;

[0019] Figure Labels

[0020] 1. Liquid inlet device; 11. First liquid inlet pipe; 12. Buffer filter tank; 121. Sedimentation layer; 13. Second liquid inlet pipe; 14. Filter screen; 2. Main body; 21. Separating tank; 22. Water injection pipe; 23. Vent pipe; 3. Water seal; 4. Sewage discharge device; 41. First drain pipe; 411. Liquid inlet pipe; 412. Drain pipe; 42. Sewage float plug; 43. Sewage control port; 44. First barrier net; 45. Liquid inlet net; 5. Clean water discharge device; 51. First drain pipe; 511. Water inlet pipe; 512. Drain pipe; 52. Clean water float plug; 53. Clean water control port; 54. Second barrier net; 55. Shut-off valve. Detailed Implementation

[0021] Example

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0023] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0024] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0025] In the description of this utility model, it should be noted that the terms "upper", "lower", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the utility model product is usually placed in during use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0026] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," and "connect" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0027] The following detailed description, in conjunction with the accompanying drawings, outlines some embodiments of the present invention. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0028] like Figures 1-3 As shown, this utility model discloses an oil-water wastewater separation device, which is mainly used for separating wastewater (such as oily wastewater) with a lower density than clean water. It includes an inlet device 1, a main body 2, a water seal 3, a wastewater discharge device 4, and a clean water discharge device 5. One end of the inlet device 1 receives the oil-water mixture from the outside, and the other end passes through the main body 2 and is located inside the main body 2. The water seal 3 is also located inside the main body 2. The wastewater discharge device 4 and the clean water discharge device 5 are located on opposite sides of the main body 2, and each of them has one end passing through the main body 2 and located inside the main body 2, and the other end is located outside the main body 2.

[0029] The liquid inlet device 1 includes a first liquid inlet pipe 11, a buffer filter tank 12, and a second liquid inlet pipe 13. One end of the first liquid inlet pipe 11 receives the oil-water mixture from the outside, and the other end passes through the buffer filter tank 12 and is located inside the buffer filter tank 12. One end of the second liquid inlet pipe 13 is connected to the side of the buffer filter tank 12 away from the first liquid inlet pipe 11, and a filter screen 14 is provided at the connection. The other end of the second liquid inlet pipe 13 passes through the main body 2 and is located inside the main body 2.

[0030] The height of the buffer filter tank 12 is less than 1m, which facilitates the cleaning of the sediment in the sedimentation layer 121. The bottom of the buffer filter tank 12 is provided with a sedimentation layer 121, and the height of the sedimentation layer 121 is lower than the height of the filter screen 14. The outlet of the first liquid inlet pipe 11 is located inside the sedimentation layer 121 and does not contact the bottom of the sedimentation layer 121.

[0031] The main body 2 includes a separating tank 21, a water injection pipe 22, and a vent pipe 23. The water injection pipe 22 is perpendicular to the bottom surface of the separating tank 21, with one end of the water injection pipe 22 located on the outside of the separating tank 21 and the other end close to the bottom surface inside the separating tank 21. Similarly, the vent pipe 23 is perpendicular to the bottom surface of the separating tank 21, with one end of the vent pipe 23 located on the outside of the separating tank 21 and the other end located at the top of the inside of the separating tank 21.

[0032] The water seal 3 is used to separate clean water from other liquids, and the water seal 3 is located below the end of the second inlet pipe 13 away from the buffer filter tank 12. The water seal 3 is horizontally set inside the separator tank 21.

[0033] The wastewater discharge device 4 includes a first discharge pipe 41 and a wastewater float 42. The first discharge pipe 41 includes an inlet pipe 411 and a discharge pipe 412. The inlet pipe 411 is located inside the separator 21 and passes vertically through the water seal 3. One end of the inlet pipe 411 is connected to the discharge pipe 412, and the other end is provided with a first blocking net 44. A wastewater control port 43 is provided at the position where the inlet pipe 411 and the discharge pipe 412 are connected. The wastewater float 42 is located inside the inlet pipe 411. An inlet net 45 is provided on the side of the inlet pipe 411 near the second inlet. One end of the inlet net 45 is connected to the discharge pipe 412, and the other end passes through the water seal 3 and is located below the water seal 3.

[0034] The clean water discharge device 5 includes a first drain pipe 51 and a clean water float 52. The first drain pipe 51 includes an inlet pipe 511 and a drain pipe 512. One end of the inlet pipe 511 is connected to the drain pipe 512, and the other end is provided with a clean water control port 53. It is located inside the separator 21 and passes vertically through the water seal 3. The clean water float 52 is located inside the inlet pipe 511. The horizontal part of the drain pipe 512 is provided with a second blocking net 54 inside and a shut-off valve 55 outside.

[0035] The horizontal height of the lowest side of the first drain pipe 41 is not lower than the horizontal height of the highest side of the first drain pipe 51, and the lowest side of the first drain pipe 51 is level with the water seal 3.

[0036] Both the sludge float 42 and the clean water float 52 are conical rubber plugs, which ensure that the sludge float 42 and the clean water float 52 fit tightly with the water outlet and the sludge control port 43 and the clean water control port 53. The sludge float 42 and the clean water float 52 are divided into three sections. The part closest to the sludge control port 43 and the clean water control port 53 plays a guiding role, the middle part plays a sealing role, and the last part plays a buoyancy role. Furthermore, the bottom surfaces of the sludge float 42 and the clean water float 52 are far away from the sludge control port 43 and the clean water control port 53, respectively. The density of the sludge float 42 and the clean water float 52 is less than the density of clean water, but greater than the density of oily sludge. Moreover, the required suspension height can be achieved by adjusting the counterweight.

[0037] During operation, in this embodiment, the horizontal height of the lowest side of the horizontal part of the first drain pipe 41 is the same as the horizontal height of the highest side of the horizontal part of the first drain pipe 51. The mixed liquid enters the buffer filter tank 12 through the first inlet pipe 11. The sediment in the mixed liquid either settles naturally into the sedimentation layer 121 or is blocked by the filter screen 14 and falls into the sedimentation layer 121. Then the mixed liquid enters the separatory tank 21 through the second inlet pipe 13. The mixed liquid is separated at the water seal 3. The clean water falls below through the water seal 3, and the dirty liquid remains above the water seal 3 and enters the first drain pipe 41 through the inlet screen 45 for discharge. The clean water below is discharged through the first drain pipe 51.

[0038] Because the bottom of the horizontal section of the first drain pipe 41 is level with the top of the horizontal section of the first drain pipe 51, according to the principle of communicating vessels, clean water will not enter the drain pipe 412. When the clean water level rises rapidly, it will push the sewage float 42 and the clean water float 52 at the same time. The sewage float 42 and the sewage control port 43 squeeze each other to prevent clean water from entering the drain pipe 412. The clean water float 52 leaves the clean water control port 53 to allow clean water to enter the first drain pipe 51. The sewage enters the inlet pipe 411 through the part of the inlet net 45 located above the water seal 3 and is discharged through the drain pipe 412.

[0039] When a large amount of sewage enters in a short period of time or the water seal 3 fails, the sewage will mix with the clean water under the water seal 3, forming a mixture whose density is lower than that of the clean water. This mixture cannot float the sewage float 42 and the clean water float 52. At this time, the sewage float 42 and the clean water float 52 descend, and the clean water float 52 and the clean water control port 53 squeeze each other to prevent the mixture from entering the first drain pipe 51. The mixture enters the first drain pipe 41 through the liquid inlet net and is discharged through the first drain pipe 41.

[0040] After the oil and wastewater are separated, a small amount of waste liquid may remain in the device. At this time, close the shut-off valve 55 and inject clean water into the separator 21 through the water injection pipe 22. The small amount of waste liquid remaining in the device is discharged through the waste liquid discharge device 4 by injecting clean water, so that only clean water remains in the device.

[0041] Therefore, this utility model adopts an oil-water wastewater separation device with the above-mentioned structure. It designs a wastewater float and a clean water float based on the density principle and combines them with the principle of communicating vessels to achieve the separation of oil and wastewater. It does not require external energy consumption and meets the requirements of energy saving, low carbon and environmental protection under the background of "dual carbon".

[0042] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and not to limit it. Although the utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the technical solution of this utility model, and these modifications or equivalent substitutions cannot cause the modified technical solution to deviate from the spirit and scope of the technical solution of this utility model.

Claims

1. An oil-water wastewater separation device, characterized in that: It includes a liquid inlet device, a main body, a water seal, a sludge discharge device, and a clean water discharge device. One end of the liquid inlet device receives the oil-sludge mixture from the outside, and the other end passes through the main body and is located inside the main body. The water seal is also located inside the main body. The sludge discharge device and the clean water discharge device are located on opposite sides of the main body, and each has one end passing through the main body and located inside the main body, and the other end is located outside the main body.

2. The oil-water wastewater separation device according to claim 1, characterized in that: The liquid inlet device includes a first liquid inlet pipe, a buffer filter tank, and a second liquid inlet pipe. One end of the first liquid inlet pipe receives the oil-water mixture from the outside, and the other end passes through the buffer filter tank and is located inside the buffer filter tank. One end of the second liquid inlet pipe is connected to the side of the buffer filter tank away from the first liquid inlet pipe, and a filter screen is provided at the connection point. The other end of the second liquid inlet pipe passes through the main body and is located inside the main body.

3. The oil-water wastewater separation device according to claim 2, characterized in that: The height of the buffer filter tank is less than 1m. A sedimentation layer is set at the bottom of the buffer filter tank. The height of the sedimentation layer is lower than the height of the filter screen. The outlet of the first inlet pipe is located inside the sedimentation layer and does not contact the bottom of the sedimentation layer.

4. The oil-water wastewater separation device according to claim 3, characterized in that: The main body includes a separating tank, a water injection pipe, and a vent pipe. The water injection pipe is perpendicular to the bottom surface of the separating tank, with one end located on the outside of the separating tank and the other end close to the bottom surface inside the separating tank. Similarly, the vent pipe is perpendicular to the bottom surface of the separating tank, with one end located on the outside of the separating tank and the other end located at the top inside the separating tank.

5. The oil-water wastewater separation device according to claim 4, characterized in that: The water seal is used to separate clean water from waste liquid, and the water seal is located below the end of the second inlet pipe away from the buffer filter tank. The water seal is horizontally set inside the separator.

6. The oil-water wastewater separation device according to claim 5, characterized in that: The wastewater discharge device includes a first discharge pipe and a wastewater float plug. The first discharge pipe includes an inlet pipe and a outlet pipe. The inlet pipe is located inside the separator and passes vertically through the water seal. One end of the inlet pipe is connected to the outlet pipe, and the other end is equipped with a first blocking net. A wastewater control port is provided at the connection between the inlet pipe and the outlet pipe. The wastewater float plug is located inside the inlet pipe. An inlet net is provided on the side of the inlet pipe near the second inlet. One end of the inlet net is connected to the outlet pipe, and the other end passes through the water seal and is located below the water seal.

7. The oil-water wastewater separation device according to claim 6, characterized in that: The clean water discharge device includes a first drain pipe and a clean water float. The first drain pipe includes an inlet pipe and a drain pipe. One end of the inlet pipe is connected to the drain pipe, and the other end is provided with a clean water control port, which is located inside the separator and passes vertically through the water seal. The clean water float is located inside the inlet pipe. The horizontal part of the drain pipe is provided with a second blocking net inside and a shut-off valve outside.

8. The oil-water wastewater separation device according to claim 7, characterized in that: The horizontal height of the lowest side of the first drain pipe is not lower than the horizontal height of the highest side of the first drain pipe, and the lowest side of the first drain pipe is level with the water seal.

9. The oil-water wastewater separation device according to claim 8, characterized in that: Both the sludge float and the clean water float are conical rubber plugs, and the bottom surfaces of the sludge float and the clean water float are far away from the sludge control port and the clean water control port, respectively. The density of the sludge float and the clean water float is less than that of clean water, but greater than that of oily sludge, and the counterweight can be adjusted.

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