Shale gas production wastewater treatment device

Abstract

This invention relates to the field of wastewater treatment equipment technology, specifically a shale gas extraction wastewater treatment device, including a treatment tank for treating wastewater; a stirring assembly rotatably disposed within the treatment tank for stirring the wastewater; multiple sedimentation tanks disposed at the bottom of the treatment tank; a filter screen dividing the sedimentation tanks into sedimentation chambers and drainage chambers; an outlet pipe movably disposed on the sedimentation tanks; a cleaning assembly disposed within the drainage chamber; and a pushing assembly disposed at the bottom of the sedimentation chambers. This invention, by providing multiple sedimentation tanks at the bottom of the treatment tank, allows wastewater to be pre-treated and then sorted into different sedimentation tanks for sedimentation, enabling simultaneous group processing and convenient use. Furthermore, by incorporating an adjustable stirring paddle within the treatment tank, the paddle can be opened at different angles when the stirring rod rotates at varying speeds, thereby achieving variable-diameter stirring and resulting in more uniform mixing.

Description

Technical Field

[0001] This invention relates to the field of wastewater treatment equipment technology, specifically to a wastewater treatment device for shale gas extraction. Background Technology

[0002] The exploration and development of unconventional natural gas, especially shale gas, is currently a hot topic in the oil and gas industry. Shale gas is an unconventional natural gas mainly located in dark mudstone or carbonaceous mudstone, existing in adsorbed or free phases within interlayers of mudstone, high-carbon mudstone, shale, and silty rocks. The core technology for shale gas extraction is hydraulic fracturing. The fracturing fluid in hydraulic fracturing mainly consists of high-pressure water, sand, and chemical additives, with water and sand content exceeding 99%.

[0003] In existing technologies, the treatment of shale gas extraction wastewater must involve sedimentation. During the sedimentation process, the wastewater must wait for the sedimentation to complete before it can be discharged. Newly generated wastewater cannot be treated during the sedimentation process, making continuous treatment impossible and affecting the efficiency of wastewater treatment. Furthermore, the sediment is easily discharged along with the wastewater after sedimentation. Summary of the Invention

[0004] The purpose of this invention is to overcome the above-mentioned shortcomings and provide a shale gas extraction wastewater treatment device.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] Shale gas extraction wastewater treatment equipment includes:

[0007] Treatment tanks are used to treat wastewater;

[0008] The stirring assembly is rotatably mounted inside the treatment tank and is used to stir the wastewater.

[0009] Multiple sedimentation tanks are located at the bottom of the treatment tank for settling wastewater.

[0010] A filter screen is installed inside the sedimentation tank, which is divided into a sedimentation chamber and a drainage chamber for filtering wastewater.

[0011] The outlet pipe is movably mounted on the sedimentation tank and is used to gradually discharge the filtered wastewater from top to bottom.

[0012] The cleaning component, located inside the drain compartment, is used to wash the filter screen;

[0013] The push component, located at the bottom of the sedimentation tank, is used to discharge the sediment within the sedimentation tank.

[0014] Furthermore, the stirring assembly includes a stirring rod rotatably disposed within the processing tank, an adjustable stirring paddle disposed on the stirring rod, a storage hopper fitted at the top of the stirring rod, and a discharge port opened on the storage hopper.

[0015] Furthermore, the adjustable stirring paddle includes a fixed plate fixed to the stirring rod, a first movable rod rotatably disposed on the fixed plate, a second movable rod rotatably disposed at the end of the first movable rod away from the fixed plate, and a reset component is also disposed on the stirring rod.

[0016] Furthermore, the reset assembly includes a support block fixed to the stirring rod, the support block being disposed at the bottom end of the fixed plate, a guide rod being disposed between the support block and the fixed plate, a limit rod being rotatably disposed at the connection between the first movable rod and the second movable rod, a telescopic rod being movably disposed at the other end of the limit rod, the telescopic rod being sleeved on the guide rod, and a reset spring being sleeved on the guide rod being disposed between the guide rod and the fixed plate.

[0017] Furthermore, the bottom of the treatment tank is rotatably equipped with a rotating chassis, and the bottom of the rotating chassis has a drain outlet facing the sedimentation tank.

[0018] Furthermore, the side wall of the sedimentation tank is rotatably equipped with an adjustment plate, the water outlet pipe is installed on the adjustment plate, the adjustment plate is provided with an adjustment component on one side inside the sedimentation tank, and the adjustment plate is connected to the cleaning component through the adjustment component.

[0019] Furthermore, the adjustment assembly includes a mounting plate fixed to the adjustment plate, a drive block is provided on the mounting plate, and a first slide rail and a second slide rail are provided inside the sedimentation chamber;

[0020] The cleaning assembly includes a slide rail slidably connected to a first slide rail and a cleaning plate slidably connected to a second slide rail. The slide rail has a groove that cooperates with the drive block. The cleaning plate and the slide rail are connected by a connecting rod.

[0021] Furthermore, the pushing component includes a lead screw rotatably disposed within the sedimentation chamber, a push plate fitted onto the lead screw and attached to the bottom of the sedimentation chamber, and a sealing door slidably disposed on one side of the sedimentation chamber and aligned with the push plate.

[0022] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0023] 1. This invention has multiple sedimentation tanks at the bottom of the treatment tank. After the wastewater is pretreated, it can be divided into different sedimentation tanks for sedimentation. It can be grouped and treated at the same time, which is convenient to use.

[0024] 2. This invention provides an adjustable stirring paddle inside the processing tank. When the stirring rod rotates at different speeds, it can drive the stirring paddle to open at different angles, thereby achieving variable-diameter stirring and making the stirring more uniform.

[0025] 3. The present invention is equipped with an adjustment plate and a cleaning component connected to the adjustment plate. The adjustment plate can adjust the height of the water outlet pipe, allowing the settled sewage to be discharged gradually from top to bottom. When the height of the water outlet pipe is adjusted downward by adjusting the adjustment plate, the cleaning component can also be driven to clean the filter screen. Attached Figure Description

[0026] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0027] Figure 1 This is a schematic diagram of the main structure of the present invention;

[0028] Figure 2 This is a schematic diagram of the internal structure of the processing box of the present invention;

[0029] Figure 3 This is a schematic diagram of the adjustable stirring rod of the present invention;

[0030] Figure 4 This is a schematic diagram of the internal structure of the sedimentation tank of the present invention;

[0031] Figure 5 This is a schematic diagram showing the connection between the cleaning component and the adjustment plate of the present invention.

[0032] In the diagram: 1. Processing tank; 2. Sedimentation tank; 20. Sealed door; 21. First slide rail; 22. Second slide rail; 3. Rotating chassis; 31. Drain outlet; 4. Agitator assembly; 41. Agitator rod; 42. Adjustable agitator paddle; 421. Fixed plate; 422. First movable rod; 423. Second movable rod; 424. Support block; 425. Guide rod; 426. Limiting rod; 427. Telescopic rod; 428. Return spring; 43. Storage hopper; 44. Discharge port; 5. Filter screen; 6. Water outlet pipe; 61. Adjusting plate; 62. Mounting plate; 63. Drive block; 7. Cleaning assembly; 71. Slide rail; 72. Cleaning plate; 73. Connecting rod; 8. Pushing assembly; 81. Push plate; 82. Lead screw. Detailed Implementation

[0033] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0035] Reference Figures 1-5 As shown, the shale gas extraction wastewater treatment device includes:

[0036] Treatment tank 1: Wastewater first flows into treatment tank 1 for pretreatment, which includes adding chemicals and stirring the wastewater.

[0037] The stirring component 4 is rotatably installed inside the treatment tank 1. After the reagent is added, the wastewater is stirred by the stirring component 4.

[0038] Multiple sedimentation tanks 2 are located at the bottom of the treatment tank 1. After the wastewater is pretreated in the treatment tank 1, it can flow into the sedimentation tanks 2 at the bottom for sedimentation. The purpose of having multiple sedimentation tanks 2 is that the pretreatment time for wastewater is generally short, while the sedimentation time is relatively long. Therefore, when the wastewater flow rate is large, the wastewater can be treated in batches. Once all the sedimentation tanks 2 are filled with wastewater, the wastewater from the first batch has already settled. They can be used in rotation without having to wait, thus achieving continuous wastewater treatment.

[0039] The filter screen 5 is installed inside the sedimentation tank 2, which divides the sedimentation tank 2 into a sedimentation chamber and a drainage chamber for filtering wastewater.

[0040] The outlet pipe 6 is movably mounted on the drainage chamber. A solenoid valve is installed inside the outlet pipe 6. The outlet pipe 6 can move from top to bottom along the drainage chamber to gradually discharge the filtered wastewater from top to bottom, thereby regulating the flow rate and pressure of the drainage.

[0041] Cleaning component 7, located in the drain chamber, is used to wash the filter screen 5;

[0042] Push component 8 is located at the bottom of the sedimentation tank and is used to discharge sediment from the sedimentation tank.

[0043] In one embodiment, the stirring assembly 4 includes a stirring rod 41 rotatably disposed in the processing box 1, an adjustable stirring paddle 42 disposed on the stirring rod 41, a storage hopper 43 sleeved on the top of the stirring rod 41, and a discharge port 44 opened on the storage hopper 43.

[0044] The stirring rod 41 rotates at a variable speed. At different speeds, it can drive the adjustable stirring paddle 42 to change different angles, realize variable diameter stirring, and improve stirring efficiency. The storage hopper 43 rotates together with the stirring rod 41, so that the medicine can be splashed in all directions.

[0045] In one embodiment, the adjustable stirring paddle 42 includes a fixed plate 421 fixed to the stirring rod 41, a first movable rod 422 rotatably disposed on the fixed plate 421, a second movable rod 423 rotatably disposed at the end of the first movable rod 422 away from the fixed plate 421, and a reset component is also disposed on the stirring rod 41.

[0046] When the stirring rod 41 rotates, it can drive the first movable rod 422 and the second movable rod 423 to open outward, thereby changing the position of the stirring paddle. The reset component has a certain elasticity, and when the two movable rods open, they will compress the reset component. Therefore, the opening angle of the stirring paddle can be adjusted by different rotation speeds.

[0047] In one embodiment, the reset assembly includes a support block 424 fixed to the stirring rod 41. The support block 424 is disposed at the bottom end of the fixing plate 421. A guide rod 425 is disposed between the support block 424 and the fixing plate 421. A limit rod 426 is rotatably disposed at the connection between the first movable rod 422 and the second movable rod 423. A telescopic rod 427 is movably disposed at the other end of the limit rod 426. The telescopic rod 427 can slide within the limit rod 426. The telescopic rod 427 is sleeved on the guide rod 425. A reset spring 428 sleeved on the guide rod 425 is disposed between the guide rod 425 and the fixing plate 421.

[0048] When the stirring rod 41 rotates, the movable rod deflects outward under the action of centrifugal force. When the first movable rod 422 deflects, it will pull the limiting rod 426 upward, causing the limiting rod 426 to slide upward along the guide rod 425 and compress the return spring 428. At different speeds, the deflection angle of the first movable rod 422 is also different, thereby realizing the variable diameter stirring of the stirring paddle and improving the stirring efficiency.

[0049] In one embodiment, a rotating base 3 is rotatably provided at the bottom of the treatment tank 1. A drain outlet 31 is opened at the bottom of the rotating base 3, and the drain outlet 31 faces the sedimentation tank. A solenoid valve is installed at the drain outlet 31. The sewage is first pretreated by the treatment tank 1, and then the sewage is discharged into a sedimentation tank 2 at the bottom through the drain outlet 31. Then the rotating base 3 is rotated so that the drain outlet 31 faces the next sedimentation tank 2.

[0050] In one embodiment, an adjusting plate 61 is rotatably provided on the side wall of the sedimentation tank, and the outlet pipe 6 is located near the side of the adjusting plate 61. In this way, when the adjusting plate 61 is rotated, the height of the outlet pipe 6 can be adjusted, and sewage can be discharged from top to bottom. An adjusting component is provided on one side of the adjusting plate 61 inside the sedimentation tank, and the adjusting plate 61 is connected to the cleaning component 7 through the adjusting component. When the adjusting plate 61 is rotated, the cleaning component 7 can also be moved downward through the adjusting component.

[0051] In one embodiment, the adjustment assembly includes a mounting plate 62 fixed on the adjustment plate 61, a drive block 63 is provided on the mounting plate 62, and a first slide rail 21 and a second slide rail 22 are provided inside the sedimentation chamber;

[0052] The cleaning assembly 7 includes a slide rail 71 that is slidably connected to the first slide rail 21 and a cleaning plate 72 that is slidably connected to the second slide rail 22. The slide rail 71 has a groove that cooperates with the drive block 63. The cleaning plate 72 and the slide rail 71 are connected by a connecting rod 73.

[0053] When the adjusting plate 61 rotates, it will drive the driving block 63 to rotate together through the mounting plate 62. The driving block 63 will slide in the slide rail 71 and drive the slide rail 71 to slide from top to bottom. The slide rail 71 can then drive the cleaning plate 72 to move together through the connecting rod 73. The cleaning plate 72 will move from top to bottom along the surface of the filter screen 5 to clean the filter screen 5.

[0054] In one embodiment, the pushing component 8 includes a lead screw 82 rotatably disposed in the sedimentation chamber, a push plate 81 sleeved on the lead screw 82 and attached to the bottom of the sedimentation chamber, and a sealing door 20 slidably disposed on one side of the sedimentation chamber and aligned with the push plate 81.

[0055] After the wastewater in the sedimentation tank 2 is discharged, the sealing door 20 can be opened, and then the screw 82 can be turned to push the bottom sediment out of the push plate 81.

[0056] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within the present invention.

Claims

1. A shale gas extraction wastewater treatment device, characterized in that, include: Treatment tank (1) is used to treat wastewater; The stirring assembly (4) is rotatably installed inside the treatment tank (1) for stirring the wastewater; Multiple sedimentation tanks (2) are set at the bottom of the treatment tank (1) for settling wastewater; A filter screen (5) is installed inside the sedimentation tank (2), which is divided into a sedimentation chamber and a drainage chamber for filtering wastewater. The outlet pipe (6) is movably installed on the sedimentation tank (2) and is used to gradually discharge the filtered wastewater from top to bottom; Cleaning component (7) is installed in the drain chamber and is used to wash the filter screen (5); The push component (8) is located at the bottom of the sedimentation tank and is used to discharge the sediment in the sedimentation tank; The stirring assembly (4) includes a stirring rod (41) rotatably disposed in the processing box (1), an adjustable stirring paddle (42) is provided on the stirring rod (41), a storage hopper (43) is sleeved on the top of the stirring rod (41), and a discharge port (44) is opened on the storage hopper (43). The adjustable stirring paddle (42) includes a fixed plate (421) fixed on the stirring rod (41), a first movable rod (422) rotatably disposed on the fixed plate (421), a second movable rod (423) rotatably disposed at the end of the first movable rod (422) away from the fixed plate (421), and a reset component disposed on the stirring rod (41). The reset assembly includes a support block (424) fixed on the stirring rod (41), the support block (424) is located at the bottom end of the fixed plate (421), a guide rod (425) is provided between the support block (424) and the fixed plate (421), a limit rod (426) is rotatably provided at the connection between the first movable rod (422) and the second movable rod (423), a telescopic rod (427) is movably provided at the other end of the limit rod (426), the telescopic rod (427) is sleeved on the guide rod (425), and a reset spring (428) sleeved on the guide rod (425) is provided between the guide rod (425) and the fixed plate (421). The bottom of the treatment tank (1) is provided with a rotating chassis (3), and the bottom of the rotating chassis (3) is provided with a drain outlet (31) facing the sedimentation tank.

2. The shale gas extraction wastewater treatment device according to claim 1, characterized in that, The side wall of the sedimentation tank is rotatably equipped with an adjustment plate (61), and the water outlet pipe (6) is installed on the adjustment plate (61). The adjustment plate (61) is located on one side inside the sedimentation tank and is equipped with an adjustment component. The adjustment plate (61) is connected to the cleaning component (7) through the adjustment component.

3. The shale gas extraction wastewater treatment device according to claim 2, characterized in that, The adjustment assembly includes a mounting plate (62) fixed on the adjustment plate (61), a drive block (63) is provided on the mounting plate (62), and a first slide rail (21) and a second slide rail (22) are provided in the sedimentation chamber. The cleaning assembly (7) includes a slide rail (71) slidably connected to the first slide rail (21) and a cleaning plate (72) slidably connected to the second slide rail (22). The slide rail (71) has a groove that cooperates with the drive block (63). The cleaning plate (72) and the slide rail (71) are connected by a connecting rod (73).

4. The shale gas extraction wastewater treatment device according to claim 1, characterized in that, The pushing component (8) includes a lead screw (82) rotatably disposed in the sedimentation chamber, a push plate (81) fitted on the lead screw (82) and attached to the bottom of the sedimentation chamber, and a sealing door (20) slidably disposed on one side of the sedimentation chamber and aligned with the push plate (81).

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