A heavy metal ion adsorption treatment device for oilfield wastewater

Abstract

This utility model relates to the field of wastewater treatment technology and discloses a heavy metal ion adsorption treatment device for oilfield wastewater. It includes a filter tank and an inlet pipe, the inlet pipe being connected to the inner wall of the filter tank. A filter assembly is installed inside the filter tank, and a support plate is fixed to the outside of the filter tank. A water guiding assembly is located on top of the support plate, and a guide pipe is provided on one side of the water guiding assembly. In this utility model, wastewater flows into the filter tank through the inlet pipe, and the filter assembly adsorbs and filters the oil in the oilfield wastewater, achieving a double-layer filtration effect. A driving assembly drives a stirring assembly to rotate, which in turn causes the wastewater to rotate in a spiral, allowing the wastewater to flow through the guiding assembly to the adsorption assembly for heavy metal ion adsorption treatment. This solves the problem of ensuring thorough and uniform mixing of wastewater and adsorption materials.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, specifically to a heavy metal ion adsorption treatment device for oilfield wastewater. Background Technology

[0002] Oilfield wastewater is a complex wastewater generated during oilfield extraction and production. It comes from various sources, including oily wastewater discharged from oil extraction operations and drilling mud wastewater. The wastewater has a complex composition, containing not only a large amount of crude oil, but also suspended solids, dissolved salts, chemical agents, and various microorganisms. These components make the wastewater appear turbid and have a pungent odor. If it is discharged directly without proper treatment, it will cause serious pollution to the soil, water bodies, and other ecological environments, and disrupt the ecological balance. At the same time, reinjecting untreated wastewater will also damage the formation and affect subsequent oilfield extraction.

[0003] Oilfield wastewater contains heavy metal ions such as mercury, cadmium, and lead. These ions are difficult to degrade and easily accumulate in the environment. If discharged directly without treatment, they will pollute soil and water sources, disrupt the ecological balance, and harm biological health. Heavy metal ion adsorption treatment equipment can effectively remove these ions, reduce pollution risks, and ensure environmental safety. However, existing oilfield wastewater heavy metal ion adsorption treatment equipment lacks a dual-layer oil filtration system, making it difficult to efficiently intercept oil particles of different sizes in the wastewater. This allows oil to enter the adsorption stage, affecting the heavy metal ion adsorption effect and clogging the adsorption material, thus reducing the equipment's lifespan. Furthermore, the lack of an integrated propeller stirring and flow guiding function prevents the wastewater from being fully and evenly mixed with the adsorption material, affecting the adsorption reaction rate and efficiency. It also fails to effectively guide the wastewater to flow rationally within the equipment, which is detrimental to improving overall treatment efficiency.

[0004] Therefore, it is necessary to provide a new oilfield wastewater heavy metal ion adsorption treatment device to solve the above-mentioned technical problems. Utility Model Content

[0005] The purpose of this invention is to provide an oilfield wastewater heavy metal ion adsorption treatment device to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an oilfield wastewater heavy metal ion adsorption treatment device, comprising a filter tank and an inlet pipe, wherein the inlet pipe is connected to the inner wall of the filter tank, a filter assembly is provided inside the filter tank, and a support plate is fixed to the outer side of the filter tank.

[0007] The water guiding component is disposed on the top of the support plate. A guide pipe is provided on one side of the water guiding component. One end of the guide pipe is connected to the adsorption tank, and the outer side of the adsorption tank is fixed to one side of the support plate.

[0008] The fixing plate is fixed to the top of the adsorption tank. A driving component is provided on the top of the fixing plate, and a stirring component is provided at the bottom of the driving component. A support column is fixed to the inner wall of the adsorption tank.

[0009] The adsorption component is disposed inside the support column, and a flow guiding component is disposed on one side of the support column. The inner wall of the adsorption tank is connected to an outlet pipe.

[0010] Preferably, the filtration assembly includes a first filter screen and a second filter screen, which are respectively fixed to the inner wall of the filtration tank.

[0011] Preferably, the water guiding assembly includes a water pump fixed to the top of the support plate, the water pump having a connecting pipe at its inlet end, and one end of the connecting pipe being connected to the inner wall of the filter tank.

[0012] Preferably, the drive assembly includes a motor fixed to the top of the fixed plate, and a connecting rod is fixed to the output end of the motor.

[0013] Preferably, the stirring assembly includes a guide rod fixed to one end of the connecting rod, and a spiral stirring blade for stirring the wastewater is fixed on the outer side of the guide rod, and one end of the guide rod is rotatably connected to the inner wall of the adsorption tank.

[0014] Preferably, the adsorption assembly includes a support frame slidably connected to the inner wall of the support column, and the inner wall of the support frame is fixed with an adsorption plate for adsorbing heavy metal ions from wastewater.

[0015] Preferably, the flow guiding assembly includes a fixed frame fixed to one side of the support column, and a spiral flow guiding plate for adsorbing and guiding sewage is fixed on the inner wall of the fixed frame.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0017] In this invention, wastewater flows into a filtration tank through an inlet pipe. The filtration components adsorb and filter the oil in the oilfield wastewater, thereby achieving a double-layer filtration effect for oil pollution in the oilfield wastewater. By setting a drive component to drive the stirring component to rotate, the stirring component drives the wastewater to rotate in a spiral, so that the wastewater flows through the guide component to the adsorption component, where the adsorption component adsorbs heavy metal ions from the wastewater, thus solving the problem of fully and evenly mixing the wastewater and the adsorption material. Attached Figure Description

[0018] Figure 1 A schematic diagram of a preferred embodiment of the oilfield wastewater heavy metal ion adsorption treatment equipment provided by this utility model;

[0019] Figure 2 This is a schematic diagram of the structure of the filter assembly in this utility model;

[0020] Figure 3 This is a schematic diagram of the water guiding component in this utility model;

[0021] Figure 4 This is a schematic diagram of the flow guiding component in this utility model;

[0022] Figure 5 for Figure 4 The enlarged structural diagram at point A is shown in the figure.

[0023] In the diagram: 1. Filter tank; 2. Inlet pipe; 3. Filter assembly; 31. First filter screen; 32. Second filter screen; 4. Support plate; 5. Water guiding assembly; 51. Water pump; 52. Connecting pipe; 6. Guide pipe; 7. Adsorption tank; 8. Fixing plate; 9. Drive assembly; 91. Motor; 92. Connecting rod; 10. Stirring assembly; 101. Guide rod; 102. Spiral stirring blade; 11. Support column; 12. Adsorption assembly; 121. Support frame; 122. Adsorption plate; 13. Flow guiding assembly; 131. Fixing frame; 132. Spiral flow guide plate; 14. Outlet pipe. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Please see Figure 1-5 As shown, an oilfield wastewater heavy metal ion adsorption treatment device includes a filter tank 1 and an inlet pipe 2. The inlet pipe 2 is connected to the inner wall of the filter tank 1. The filter tank 1 is equipped with a filter assembly 3 inside, and a support plate 4 is fixed on the outer side of the filter tank 1. The oilfield wastewater enters the filter tank 1 through the inlet pipe 2. Under the action of the filter assembly 3, the oilfield wastewater comes into contact with the oil filter material inside the filter assembly 3, and the oil in the oilfield wastewater is adsorbed, thereby achieving the effect of filtering and adsorbing the oil in the oilfield wastewater. This avoids the problem of oil entering the adsorption stage, affecting the heavy metal ion adsorption effect, and clogging the adsorption material.

[0026] The water guiding component 5 is set on the top of the support plate 4. A guide pipe 6 is set on one side of the water guiding component 5. One end of the guide pipe 6 is connected to the adsorption tank 7. The outer side of the adsorption tank 7 is fixed to one side of the support plate 4. After the oilfield sewage is filtered in the filter tank 1, the water guiding component 5 guides the filtered oilfield sewage to the adsorption tank 7 through the guide pipe 6, which facilitates the subsequent adsorption of heavy metal ions in the oilfield sewage and solves the problem that sewage cannot be effectively transported to the adsorption treatment area.

[0027] The fixed plate 8 is fixed to the top of the adsorption tank 7. The top of the fixed plate 8 is provided with a driving component 9, and the bottom of the driving component 9 is provided with a stirring component 10. The inner wall of the adsorption tank 7 is fixed with a support column 11. The adsorption tank 7 can fix the fixed plate 8. The design of the driving component 9 can easily drive the stirring component 10 to rotate. The stirring component 10 drives the sewage to rotate in a spiral, which solves the problem of fully and evenly mixing the sewage and the adsorption material.

[0028] The adsorption component 12 is installed inside the support column 11. A flow guiding component 13 is installed on one side of the support column 11. The inner wall of the adsorption tank 7 is connected to the water outlet pipe 14, which is equipped with a valve. Under the guidance of the flow guiding component 13, the sewage mixes with the adsorption material in the adsorption component 12, thereby achieving the effect of heavy metal ion adsorption treatment of the sewage and solving the problem of not being able to effectively guide the sewage to flow reasonably in the equipment.

[0029] The filter assembly 3 includes a first filter screen 31 and a second filter screen 32, which are respectively fixed to the inner wall of the filter tank 1. The design of the first filter screen 31 can effectively remove larger oil droplets and impurities from the sewage. The design of the second filter screen 32 can effectively further process small oil droplets and improve the oil removal accuracy. The combination of the two can cover a wider range of oil droplet particle sizes and achieve more thorough oil-water separation. The first filter screen 31 and the second filter screen 32 are metal fiber sintered felt filter screen and coalescing filter screen in the prior art. The metal fiber sintered felt filter screen removes oil droplets of different particle sizes from the sewage through interception, inertial collision and diffusion. Larger oil droplets are directly intercepted on the surface, and smaller oil droplets are captured and adsorbed due to inertia or diffusion. The coalescing filter screen uses oleophilic materials such as glass fiber and polypropylene fiber to adsorb and coalesce small oil droplets, making them larger oil droplets before they are separated from the water.

[0030] The water guiding component 5 includes a water pump 51 fixed to the top of the support plate 4. The water inlet end of the water pump 51 is connected to a connecting pipe 52, and one end of the connecting pipe 52 is connected to the inner wall of the filter tank 1. After the oilfield sewage is filtered in the filter tank 1, the water pump 51 is turned on. The water pump 51 draws the sewage into the guide pipe 6 through the connecting pipe 52, so that the sewage flows into the adsorption tank 7 through the guide pipe 6, which facilitates the subsequent metal ion adsorption treatment of the sewage and solves the problem that the sewage cannot be effectively transported to the adsorption treatment area.

[0031] The drive assembly 9 includes a motor 91 fixed to the top of the fixed plate 8. A connecting rod 92 is fixed to the output end of the motor 91. The stirring assembly 10 includes a guide rod 101 fixed to one end of the connecting rod 92. A spiral stirring blade 102 for stirring the sewage is fixed to the outside of the guide rod 101. One end of the guide rod 101 is rotatably connected to the inner wall of the adsorption tank 7. When the motor 91 is turned on, the spiral stirring blade 102 is driven to rotate, and the spiral stirring blade 102 stirs the sewage, so that the heavy metal ions in the sewage are evenly distributed. At the same time, the flow of the spiral stirring blade 102 causes the sewage to flow in a spiral shape along the spiral guide plate 132, which increases the flow and residence time of the sewage in the equipment and improves the adsorption of the subsequent adsorption material and the sewage.

[0032] The adsorption assembly 12 includes a support frame 121 slidably connected to the inner wall of the support column 11. An adsorption plate 122 for adsorbing heavy metal ions from wastewater is fixed to the inner wall of the support frame 121. The flow guiding assembly 13 includes a fixing frame 131 fixed to one side of the support column 11. A spiral flow guiding plate 132 for adsorbing and guiding wastewater is fixed to the inner wall of the fixing frame 131. The support column 11 supports the spiral flow guiding plate 132 via the fixing frame 131. The support column 11 has a groove, allowing the wastewater flowing spirally through the spiral flow guiding plate 132 to fully contact the adsorption material on the adsorption plate 122 fixed to the support frame 121, thus improving adsorption efficiency. The presence of the spiral flow guiding plate 132 also prevents wastewater from overflowing. The short-circuit phenomenon ensures that all wastewater is treated by the adsorption material. When it is necessary to remove heavy metal ions from the adsorption plate 122 later, it is pulled to the support frame 121 and slid along the groove of the support column 11. The support frame 121 drives the adsorption plate 122 to separate from the adsorption tank 7, which facilitates the replacement or maintenance of the adsorption material in the adsorption plate 122 and improves the convenience of the device. The adsorption plate 122 is a prior art technology. The adsorption material of the adsorption plate 122 is usually activated carbon, ion exchange resin, etc. When working, the activated carbon adsorbs heavy metal ions by means of its porous structure; the ion exchange resin uses its own exchangeable ions to exchange with heavy metal ions in the wastewater, fixing them on the resin, thereby reducing the content of heavy metal ions in the wastewater.

[0033] Working Principle: When using this device, the operator first connects the oilfield wastewater to the inlet pipe 2. The wastewater flows into the filter tank 1 through the inlet pipe 2. Through the interception, inertial collision, and diffusion of the first filter screen 31, oil droplets of different sizes are removed from the wastewater. Larger oil droplets are directly intercepted on the surface, while smaller droplets are captured and adsorbed due to inertia or diffusion. The second filter screen 32 utilizes oleophilic materials such as glass fiber and polypropylene fiber to adsorb and aggregate the tiny oil droplets, causing them to become larger droplets before separating them from the water. After filtration, the water pump 51 is turned on. The water pump 51 pumps the wastewater through the connecting pipe 52 into the guide pipe 6, allowing the wastewater to flow into the adsorption tank 7. Then, the motor 91 is turned on. The motor 91 drives the spiral stirring blade 102 to rotate, which stirs the sewage and makes the heavy metal ions in the sewage evenly distributed. At the same time, the flow of the spiral stirring blade 102 causes the sewage to flow in a spiral shape along the spiral guide plate 132. The spirally flowing sewage makes full contact with the adsorption material of the adsorption plate 122 fixed on the support frame 121, ensuring that all sewage can be treated by the adsorption material. When it is necessary to clean the heavy metal ions from the adsorption plate 122 in the future, it can be pulled to slide along the groove of the support column 11, so that the support frame 121 drives the adsorption plate 122 to separate from the adsorption tank 7, and the adsorption material in the adsorption plate 122 can be replaced or maintained.

[0034] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0035] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A heavy metal ion adsorption treatment device for oilfield wastewater, comprising a filter tank (1), characterized in that, Also includes: The inlet pipe (2) is connected to the inner wall of the filter tank (1). The filter tank (1) is equipped with a filter assembly (3) inside and a support plate (4) is fixed on the outer side of the filter tank (1). A water guiding component (5) is set on the top of the support plate (4). A guide pipe (6) is provided on one side of the water guiding component (5). One end of the guide pipe (6) is connected to an adsorption tank (7), and the outer side of the adsorption tank (7) is fixed to one side of the support plate (4). A fixing plate (8) is fixed to the top of the adsorption tank (7). A driving component (9) is provided on the top of the fixing plate (8). A stirring component (10) is provided at the bottom of the driving component (9). A support column (11) is fixed to the inner wall of the adsorption tank (7). An adsorption component (12) is disposed inside a support column (11), and a flow guiding component (13) is disposed on one side of the support column (11). An outlet pipe (14) is connected to the inner wall of the adsorption tank (7).

2. The oilfield wastewater heavy metal ion adsorption treatment equipment according to claim 1, characterized in that: The filter assembly (3) includes a first filter screen (31) and a second filter screen (32) respectively fixed to the inner wall of the filter pool (1).

3. The oilfield wastewater heavy metal ion adsorption treatment equipment according to claim 1, characterized in that: The water guiding component (5) includes a water pump (51) fixed to the top of the support plate (4). The water inlet end of the water pump (51) is connected to a connecting pipe (52), and one end of the connecting pipe (52) is connected to the inner wall of the filter tank (1).

4. The oilfield wastewater heavy metal ion adsorption treatment equipment according to claim 1, characterized in that: The drive assembly (9) includes a motor (91) fixed to the top of the fixing plate (8), and a connecting rod (92) is fixed to the output end of the motor (91).

5. The oilfield wastewater heavy metal ion adsorption treatment equipment according to claim 4, characterized in that: The stirring assembly (10) includes a guide rod (101) fixed to one end of the connecting rod (92). A spiral stirring blade (102) for stirring the sewage is fixed on the outside of the guide rod (101), and one end of the guide rod (101) is rotatably connected to the inner wall of the adsorption tank (7).

6. The oilfield wastewater heavy metal ion adsorption treatment equipment according to claim 1, characterized in that: The adsorption assembly (12) includes a support frame (121) slidably connected to the inner wall of the support column (11), and an adsorption plate (122) for adsorbing heavy metal ions from wastewater is fixed to the inner wall of the support frame (121).

7. The oilfield wastewater heavy metal ion adsorption treatment equipment according to claim 1, characterized in that: The flow guiding component (13) includes a fixed frame (131) fixed to one side of the support column (11), and a spiral flow guiding plate (132) for adsorbing and guiding sewage is fixed on the inner wall of the fixed frame (131).

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