A device for treating sewage water used in oil drilling

Abstract

The present application belongs to sewage treatment technical field, specifically speaking, it is a kind of sewage treatment device for oil drilling, including treatment pool, the one end of treatment pool is provided with inlet pipe, further including: setting in the feeding mechanism and the glue breaking mechanism of treatment pool upper portion, and installing in the pretreatment mechanism of treatment pool inside near the side of inlet pipe, the present application is through setting glue breaking mechanism, mixed assembly carries out the stirring of opposite direction in sewage, and the glue breaking of scattered sewage is carried out, at the same time, coagulant in feeding barrel enters mixed assembly inside by connecting pipe, coagulant is injected into sewage by coagulation component while stirring, accelerates the fusion of coagulant and sewage, improves the fluidity of sewage, so that sewage and coagulant can produce reaction just after entering treatment pool, shortens the treatment process, if not glue breaking, reagent is isolated by viscous polymer and wasted, after glue breaking, coagulant is all used to suspended particle, avoids reagent to be polymer ineffective consumption.

Description

Technical Field

[0001] This invention belongs to the field of wastewater treatment technology, specifically a wastewater treatment device for oil drilling. Background Technology

[0002] Oilfield drilling wastewater treatment is a comprehensive project that requires selecting appropriate process combinations based on the wastewater's quality characteristics and discharge requirements. Through pretreatment, oil-water separation, advanced treatment, and disinfection, pollutants can be effectively removed, achieving compliant discharge or resource utilization. Furthermore, employing advanced technologies such as membrane separation and advanced oxidation not only improves treatment efficiency but also enables water resource recycling, which is of great significance for environmental protection.

[0003] Existing treatment methods for oil drilling wastewater require the addition of coagulants to aggregate suspended solids into large particles. This is because the wastewater contains a large amount of bentonite and polymers, which give the water high viscosity and colloidal stability, poor fluidity, and extremely fine solid particles that do not easily settle naturally, making it difficult for the coagulant to mix quickly with the wastewater. Summary of the Invention

[0004] To address the shortcomings of existing technologies, the technical solution adopted by this invention is: a wastewater treatment device for oil drilling, comprising a treatment tank, the treatment tank being configured as two spaces, with the bottom of the treatment tank being higher near the inlet pipe, and an inlet pipe being provided at one end of the treatment tank, and further comprising: The feeding mechanism and the debinding mechanism are installed above the treatment tank, and the pretreatment mechanism is installed inside the treatment tank near the water inlet pipe. The debonding mechanism includes a driver mounted above the processing tank, a support rod mounted above the driver, a central shaft mounted at one end of the support rod, a mixing assembly outside the central shaft, and a connecting pipe mounted outside the mixing assembly. The other end of the connecting pipe is connected to the outside of the feeding mechanism.

[0005] Furthermore, the pretreatment mechanism includes: The grating plates are symmetrically arranged inside the treatment tank to disperse the wastewater. The track is symmetrically arranged on the opposite side of the grid, and the two ends of the track are connected to the opposite side of the grid plate. The track is arranged in a V-shape, so that the sewage entering the treatment tank is transferred through the rubber plates on both sides of the track, which disperses the sewage and creates a certain drop, thereby reducing the viscosity of the sewage.

[0006] Furthermore, the pretreatment mechanism also includes: Rubber plates are evenly distributed on the outside of the track, with one end of the rubber plate connected to the surface of the track. The rubber plates are inclined to the track to facilitate the retention of wastewater. The collection tank is symmetrically arranged inside the treatment tank. The bottom of the collection tank is provided with filter holes and the inner side of the collection tank is open so that the rubber plate can scoop the sewage into the collection tank. After the collection tank is used for filtration, large stones and other debris are initially filtered out from the sewage.

[0007] Furthermore, the feeding mechanism includes: A feeding tank is installed above the treatment tank; The cover plate is located above the feeding tank and has a water inlet and a feed inlet, which can be used to feed both liquid coagulants and powder coagulants. A stirring shaft is installed below the cover plate.

[0008] Furthermore, the feeding mechanism also includes: A crushing rod, which is mounted above the stirring shaft; The material distribution plate is located inside the feeding barrel. The inner wall of the material distribution plate is connected to the outside of the crushing rod. The material distribution plate is provided with filter holes so that the powder can fall into the feeding barrel at different positions of the material distribution plate under the action of the crushing rod. After being mixed with water, it is injected into the debonding mechanism. A stirring rod is mounted below the stirring shaft.

[0009] Further, the hybrid component includes: A connecting block is sleeved above the central shaft. The surface of the connecting block has a feed port. The inside of the connecting block is sleeved with the outside of the central shaft. When the central shaft rotates, the connecting block remains stationary. Telescopic column, which is installed below the connecting block.

[0010] Furthermore, the hybrid component also includes: A ring frame is installed below a telescopic column, with the lower part of the telescopic column slidably connected to the top of the ring frame; Connecting rods are evenly arranged around the ring frame and are installed on the outside of the ring frame.

[0011] Furthermore, the hybrid component also includes: The cover plate is located at the other end of the connecting rod. The surface of the cover plate has a first discharge hole. The first discharge hole on the cover plate is offset from the second discharge hole of the mixing plate. When they overlap, the coagulant inside can flow out directly and be injected into the sewage through the pressurization equipment. When they are stacked in an alternating manner, the coagulant outlet is blocked.

[0012] Furthermore, the hybrid component also includes: A stirring plate is installed outside the central shaft, and a cover plate is sleeved on the outside of the stirring plate. A second discharge hole is opened on the surface of the stirring plate.

[0013] The beneficial effects of this invention are as follows: 1. This invention incorporates a depolymerization mechanism, where the mixing component stirs the wastewater in opposite directions, breaking down the wastewater. Simultaneously, coagulant from the feeding tank enters the mixing component through a connecting pipe. While stirring, coagulant is injected into the wastewater through the coagulation component, accelerating the fusion of the coagulant and wastewater, improving the wastewater's fluidity, and enabling the wastewater and coagulant to react immediately upon entering the treatment tank, thus shortening the treatment process. If coagulant is added directly without depolymerization, the agent will be isolated by the viscous polymer and wasted. After depolymerization, the coagulant acts entirely on the suspended particles, preventing the agent from being ineffectively consumed by the polymer.

[0014] 2. This invention, by setting up a pretreatment mechanism, uses a track that drives between the grating plates, causing the rubber plates on the track to roll up the poorly flowing sewage upwards, transporting the sewage from the middle to both sides, and conveying it to the collection tank for preliminary filtration. Large impurities are concentrated in the collection tank and then cleaned. This not only further disperses the sewage and reduces its viscosity, but also performs preliminary filtration of agglomerated impurities produced by coagulant flocculation and large impurities contained in the sewage. Subsequently, the sewage enters the deep water area for further coagulation and sedimentation, which helps to mix the coagulant with the sewage and reduces the impurity content in subsequent treatment.

[0015] 3. This invention, through the setting of a feeding mechanism, allows the coagulant to be in liquid or powder form. After being added to the feeding tank, the crushing rod and the stirring rod are rotated by the stirring shaft, so that the coagulant in the feeding tank is always in liquid form. When the powdered coagulant is added to the feeding tank, the powder is temporarily stored by the distribution plate. The crushing rod drives the powder to be evenly sprinkled to the bottom of the feeding tank through the holes of the distribution plate and mixed with water before being fed into the tank. This invention can maintain rapid feeding of coagulants of different forms, allowing the liquid to enter the mixing component.

[0016] 4. This invention, through the installation of a mixing component, uses a connecting rod on the ring frame to move the cover plate upwards, aligning the first and second discharge holes. This connects the inlet on the connecting block with the connecting pipe, allowing the coagulant in the feeding tank to enter the central shaft through the connecting block and then into the stirring plate, finally flowing out from the second discharge hole. Simultaneously, coagulant solution is injected into the wastewater during the breaking process. Because drilling wastewater is viscous, the added coagulant tends to float on the surface of the viscous material, failing to truly contact the internal particles. Therefore, adding coagulant during the breaking process allows for rapid contact between the polymer and the coagulant, reducing wastewater viscosity and increasing the coagulant's fusion rate. This integrated breaking and coagulation system enables the coagulant to fully fuse with the wastewater in a shorter time, improving wastewater treatment efficiency. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a rear view of the present invention; Figure 3 This is a schematic diagram of the pretreatment mechanism of the present invention; Figure 4 This is a partial structural schematic diagram of the pretreatment mechanism of the present invention; Figure 5 This is a schematic diagram of the structure of the glue-breaking mechanism of the present invention; Figure 6 This is a schematic diagram of the feeding mechanism of the present invention; Figure 7 This is a schematic diagram of the structure of the hybrid component of the present invention; Figure 8 This is a cross-sectional view of the hybrid component of the present invention.

[0018] In the diagram: 1. Treatment tank; 2. Inlet pipe; 3. Pretreatment mechanism; 301. Grating plate; 302. Track; 303. Rubber plate; 304. Collection tank; 305. Filter hole; 4. Debonding mechanism; 401. Driver; 402. Support rod; 403. Connecting pipe; 404. Central shaft; 405. Mixing component; 4051. Connecting block; 4052. Feed inlet; 4053. Telescopic column; 4054. Ring frame; 4055. Connecting rod; 4056. Cover plate; 4057. Stirring plate; 4058. First discharge hole; 4059. Second discharge hole; 5. Feeding mechanism; 501. Feeding bucket; 502. Cover plate; 503. Stirring shaft; 504. Crushing rod; 505. Stirring rod; 506. Distributing plate. Detailed Implementation

[0019] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. The embodiments of the present invention are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the invention to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described to better illustrate the principles and practical application of the invention, and to enable those skilled in the art to understand the invention and design various embodiments with various modifications suitable for a particular purpose.

[0020] Example 1, please refer to Figures 1-5 The present invention provides a technical solution: a wastewater treatment device for oil drilling, which is described below.

[0021] The treatment tank 1 includes two spaces, with the shallower space near the water pipe. A water inlet pipe 2 is installed at one end of the treatment tank 1. It also includes: The feeding mechanism 5 and the degumming mechanism 4 are installed above the treatment tank 1, and the pretreatment mechanism 3 is installed inside the treatment tank 1 near the water inlet pipe 2. During operation, wastewater enters the treatment tank 1 through the inlet pipe 2, first coming into contact with the depolymerizing mechanism 4, allowing impurities in the wastewater to come into contact with the coagulant. Subsequently, the wastewater comes into contact with the pretreatment mechanism 3, where large impurities are initially filtered out before entering the deeper area of ​​the treatment tank 1 for further treatment.

[0022] Pre-processing unit 3 includes: The bar screen 301 is symmetrically arranged inside the treatment tank 1, and the bar screen 301 disperses the sewage; Tracks 302 are symmetrically arranged on opposite sides of the grid. Both ends of the tracks 302 are connected to the opposite sides of the grid plate 301. The tracks 302 are arranged in a V-shape, so that the sewage entering the treatment tank 1 is transferred through the rubber plates 303 on both sides of the tracks 302, which disperses the sewage and creates a certain drop, thereby reducing the viscosity of the sewage.

[0023] Pretreatment unit 3 also includes: Rubber plate 303 is evenly distributed on the outside of track 302. One end of rubber plate 303 is connected to the surface of track 302. Rubber plate 303 and track 302 are inclined to facilitate the retention of sewage. The collection tank 304 is symmetrically arranged inside the treatment tank 1. The bottom of the collection tank 304 is provided with filter holes 305. The inner side of the collection tank 304 is open so that the rubber plate 303 can scoop the sewage into the collection tank 304. After being filtered by the collection tank 304, large stones and other materials are initially filtered out from the sewage.

[0024] Before adding the coagulant, the wastewater has poor fluidity. After being treated by the de-gelling mechanism 4, its fluidity is improved. When passing through the grating plate 301, the track 302 drives between the grating plates 301, causing the rubber plates 303 on the track 302 to roll up the poorly fluid wastewater, transporting the wastewater from the middle to both sides. The wastewater is then conveyed to the collection tank 304 for preliminary filtration, where large impurities are concentrated. After cleaning, the wastewater is further dispersed, reducing its viscosity. It also provides preliminary filtration of agglomerated impurities produced by coagulant flocculation and large impurities in the wastewater. Subsequently, the wastewater enters the deep water area for further coagulation and sedimentation, which helps to mix the coagulant with the wastewater and reduces the impurity content in subsequent treatment.

[0025] The breaking mechanism 4 includes a driver 401 disposed above the processing tank 1, a support rod 402 disposed above the driver 401, a central shaft 404 mounted on one end of the support rod 402 and a mixing component 405 outside the central shaft 404, and a connecting pipe 403 mounted outside the mixing component 405, the other end of the connecting pipe 403 being connected to the outside of the feeding mechanism 5.

[0026] After the wastewater enters the treatment tank 1, its fluidity is poor. The driver 401 drives the central shaft 404 on the support rod 402 to rotate, causing the mixing component 405 to stir in the wastewater in the opposite direction, breaking up the wastewater. At the same time, the coagulant in the feeding tank 501 enters the mixing component 405 through the connecting pipe 403. While stirring, the coagulant is injected into the wastewater through the coagulation component, which accelerates the fusion of the coagulant and the wastewater, improves the fluidity of the wastewater, and allows the wastewater and coagulant to react as soon as they enter the treatment tank 1, shortening the treatment process. If the coagulant is added directly without breaking up the polymer, the agent will be isolated by the viscous polymer and wasted. After breaking up the polymer, the coagulant acts entirely on the suspended particles, avoiding the ineffective consumption of the agent by the polymer.

[0027] The feeding mechanism 5 includes: Feeding tank 501 is installed above treatment tank 1; Cover plate 502 is located above the feeding tank 501. Cover plate 502 is provided with a water inlet and a feed inlet, which can be used to feed both liquid coagulant and powder coagulant. A stirring shaft 503 is installed below the cover plate 502.

[0028] The feeding mechanism 5 also includes: Crushing rod 504 is installed above stirring shaft 503; The material distribution plate 506 is located inside the feeding barrel 501. The inner wall of the material distribution plate 506 is connected to the outside of the crushing rod 504. The material distribution plate 506 is provided with filter holes 305, so that the powder can fall into the feeding barrel 501 at different positions of the material distribution plate 506 under the action of the crushing rod 504. After being mixed with water, it is injected into the debonding mechanism 4. Stirring rod 505 is installed below stirring shaft 503.

[0029] The coagulant is either liquid or powder. After being added to the feeding tank 501, the crushing rod 504 and the stirring rod 505 are rotated by the stirring shaft 503, so that the coagulant in the feeding tank 501 is liquid. When the powdered coagulant is added to the feeding tank 501, the powder is temporarily stored by the distribution plate 506. The crushing rod 504 drives the powder to be evenly sprinkled into the bottom of the feeding tank 501 through the holes of the distribution plate 506 and mixed with water before being fed into the tank. The coagulant can be fed quickly for different forms, allowing the liquid to enter the mixing component 405.

[0030] Example 2, please refer to Figures 1-8 The present invention provides a technical solution: based on embodiment 1, the hybrid component 405 includes: Connecting block 4051 is sleeved above central shaft 404. The surface of connecting block 4051 has a feed port 4052. The inside of connecting block 4051 is sleeved with the outside of central shaft 404. When central shaft 404 rotates, connecting block 4051 remains stationary. Telescopic column 4053 is installed below connecting block 4051.

[0031] Hybrid component 405 also includes: Ring frame 4054 is installed below telescopic column 4053, and the lower part of telescopic column 4053 is slidably connected to the top of ring frame 4054. Connecting rods 4055 are evenly arranged around the ring frame 4054 and are installed on the outside of the ring frame 4054.

[0032] Hybrid component 405 also includes: The cover plate 4056 is located above the other end of the connecting rod 4055. The surface of the cover plate 4056 has a first discharge hole 4058. The first discharge hole 4058 on the cover plate 4056 is staggered with the second discharge hole 4059 of the stirring plate 4057. When they overlap, the coagulant inside can flow out directly and be injected into the sewage through the pressurization equipment. When they are stacked in an alternating manner, the coagulant outlet is blocked.

[0033] Hybrid component 405 also includes: A stirring plate 4057 is installed outside the central shaft 404, and a cover plate 4056 is sleeved on the outside of the stirring plate 4057. A second discharge hole 4059 is opened on the surface of the stirring plate 4057.

[0034] After the wastewater enters treatment tank 1, the central shaft 404 drives the stirring plate 4057 to rotate, breaking down the wastewater and reducing its viscosity. Subsequently, the connecting block 4051 drives the telescopic column 4053 to move upward, causing the connecting rod 4055 on the ring frame 4054 to move the cover plate 4056 upward, aligning the first discharge hole 4058 with the second discharge hole 4059. This connects the inlet 4052 on the connecting block 4051 with the connecting pipe 403, allowing the coagulant in the feeding tank 501 to enter the central shaft 404 through the connecting block 4051. The wastewater enters the mixing plate 4057 from inside the central shaft 404 and finally flows out from the second outlet. At the same time as breaking the gel, the coagulant solution is injected into the wastewater. Since drilling wastewater is viscous, when coagulant is added, it tends to float on the surface of the viscous material and cannot truly contact the particles inside the wastewater. Therefore, adding coagulant during the gel breaking process can quickly bring the polymer into contact with the coagulant, reduce the viscosity of the wastewater, and increase the fusion rate of the coagulant. Through the integrated gel breaking and coagulation setting, the coagulant and wastewater can be fully mixed in a short time, improving the efficiency of wastewater treatment.

[0035] The specific workflow is as follows: During operation, wastewater enters the treatment tank 1 through the inlet pipe 2, first comes into contact with the depolymerization mechanism 4, so that the impurities in the wastewater come into contact with the coagulant, and then the wastewater comes into contact with the pretreatment mechanism 3, through which the large impurities are initially filtered out. Before adding the coagulant, the wastewater has poor fluidity. After being treated by the de-gelling mechanism 4, the fluidity is improved. When passing through the grating plate 301, the track 302 drives between the grating plates 301, causing the rubber plate 303 on the track 302 to roll up the poorly fluid wastewater, so that the wastewater is transported from the middle to both sides and sent to the collection tank 304 for preliminary filtration. Large impurities are concentrated in the collection tank 304 and then cleaned. This not only further disperses the wastewater and reduces its viscosity, but also performs preliminary filtration of the agglomerated impurities produced by the coagulant flocculation and the large impurities contained in the wastewater. Then it enters the deep water area for coagulation and sedimentation. After the wastewater enters the treatment tank 1, it has poor fluidity. The driver 401 drives the central shaft 404 on the support rod 402 to rotate, so that the mixing component 405 stirs in the wastewater in the opposite direction, breaking up the wastewater. At the same time, the coagulant in the feeding tank 501 enters the mixing component 405 through the connecting pipe 403. While stirring, the coagulant is injected into the wastewater through the coagulation component, which accelerates the fusion of the coagulant and the wastewater, improves the fluidity of the wastewater, and allows the wastewater and coagulant to react as soon as they enter the treatment tank 1. The coagulant is either liquid or powder. After being added to the feeding tank 501, the crushing rod 504 and the stirring rod 505 are rotated by the stirring shaft 503, so that the coagulant in the feeding tank 501 is liquid. When the powdered coagulant is added to the feeding tank 501, the powder is temporarily stored by the distribution plate 506. The crushing rod 504 drives the powder to be evenly sprinkled into the bottom of the feeding tank 501 through the holes of the distribution plate 506 and mixed with water before being fed into the tank. After the wastewater enters the treatment tank 1, the central shaft 404 drives the stirring plate 4057 to rotate, breaking up the wastewater and reducing its viscosity. Then, the connecting block 4051 drives the telescopic column 4053 to move upward, causing the connecting rod 4055 on the ring frame 4054 to move the cover plate 4056 upward, aligning the positions of the first discharge hole 4058 and the second discharge hole 4059. This connects the inlet 4052 on the connecting block 4051 with the connecting pipe 403, allowing the coagulant in the feeding tank 501 to enter the interior of the central shaft 404 through the connecting block 4051 and then enter the stirring plate 4057 from inside the central shaft 404, finally flowing out from the second discharge hole. At the same time as breaking up the wastewater, the coagulant solution is injected into the wastewater.

[0036] Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art and related fields based on the embodiments of the present invention without inventive effort should fall within the scope of protection of the present invention. Structures, devices, and operating methods not specifically described and explained in the present invention, unless otherwise specified or limited, shall be implemented according to conventional means in the art.

Claims

1. A wastewater treatment device for oil drilling, comprising a treatment tank (1), wherein one end of the treatment tank (1) is provided with a water inlet pipe (2), characterized in that, Also includes: The feeding mechanism (5) and the debonding mechanism (4) are set above the treatment tank (1), and the pretreatment mechanism (3) is installed inside the treatment tank (1) on the side near the water inlet pipe (2). The debonding mechanism (4) includes a driver (401) disposed above the processing tank (1), a support rod (402) disposed above the driver (401), a central shaft (404) installed at one end of the support rod (402) and a mixing component (405) outside the central shaft (404), and a connecting pipe (403) installed outside the mixing component (405), the other end of the connecting pipe (403) being connected to the outside of the feeding mechanism (5).

2. The wastewater treatment device for oil drilling according to claim 1, characterized in that: The pretreatment mechanism (3) includes: A grating plate (301) is symmetrically arranged inside the treatment tank (1); Tracks (302) are symmetrically arranged on opposite sides of the grid, and both ends of the tracks (302) are connected to the opposite sides of the grid plate (301).

3. The wastewater treatment device for oil drilling according to claim 2, characterized in that: The pretreatment mechanism (3) further includes: A rubber plate (303) is evenly disposed on the outside of the track (302), and one end of the rubber plate (303) is connected to the surface of the track (302); Collection tank (304) is symmetrically arranged inside the treatment tank (1), and filter holes (305) are provided at the bottom of the collection tank (304).

4. The wastewater treatment device for oil drilling according to claim 1, characterized in that: The feeding mechanism (5) includes: A feeding tank (501) is installed above the treatment tank (1); A cover plate (502) is disposed above the feeding hopper (501); A stirring shaft (503) is installed below the cover plate (502).

5. The wastewater treatment device for oil drilling according to claim 4, characterized in that: The feeding mechanism (5) also includes: A crushing rod (504) is mounted above the stirring shaft (503); The material distribution plate (506) is disposed inside the feeding barrel (501), and the inner wall of the material distribution plate (506) is connected to the outside of the crushing rod (504). A stirring rod (505) is mounted below the stirring shaft (503).

6. The wastewater treatment device for oil drilling according to claim 1, characterized in that: The hybrid component (405) includes: A connecting block (4051) is sleeved above the central shaft (404), and a feed inlet (4052) is opened on the surface of the connecting block (4051). Telescopic column (4053) is installed below the connecting block (4051).

7. The wastewater treatment device for oil drilling according to claim 6, characterized in that: The hybrid component (405) also includes: A ring frame (4054) is installed below the telescopic column (4053); Connecting rods (4055) are evenly arranged around the ring frame (4054) and are installed on the outside of the ring frame (4054).

8. The wastewater treatment device for oil drilling according to claim 6, characterized in that: The hybrid component (405) also includes: A cover plate (4056) is provided above the other end of the connecting rod (4055), and a first discharge hole (4058) is provided on the surface of the cover plate (4056).

9. The wastewater treatment device for oil drilling according to claim 8, characterized in that: The hybrid component (405) also includes: A stirring plate (4057) is installed outside the central shaft (404), and a cover plate (4056) is sleeved on the outside of the stirring plate (4057). A second discharge hole (4059) is opened on the surface of the stirring plate (4057).

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