A sewage treatment system

Abstract

The utility model discloses a sewage treatment system belongs to sewage treatment equipment technical field, it includes mud water temporary storage tank, stirring device, dehydration device, biological treatment pool, sedimentation tank and disinfection pool, mud water temporary storage tank and the feed inlet of stirring device are communicated through pipeline and are equipped with slurry pump on the pipeline, and the discharge outlet of stirring device and the feed end of dehydration device are communicated through pipeline and are equipped with slurry pump on the pipeline, and the drain outlet of dehydration device and biological treatment pool are communicated through pipeline and are equipped with water pump on the pipeline, and biological treatment pool and sedimentation tank are communicated through pipeline and are equipped with water pump on the pipeline, and sedimentation tank and disinfection pool are communicated through pipeline and are equipped with water pump on the pipeline. Its processing effect is good, and the stirring device can crush the stirred material, so that the solid material is finer, and the dosing machine can add flocculating agent into the box to make the small particles coagulate and settle, the biological treatment pool can remove heavy metals and other harmful components in the sewage, and the disinfection pool can disinfect the liquid.

Description

Technical Field

[0001] This utility model belongs to the technical field of sewage treatment equipment, and specifically relates to a sewage treatment system. Background Technology

[0002] Oil and gas drilling generates large amounts of drilling wastewater, including cleaning wastewater, machinery wastewater, flushing wastewater, drilling fluid wastewater, and operational wastewater. Direct discharge without treatment will cause serious environmental pollution. Currently, solid-liquid separation is typically performed, followed by the release of the filtered liquid into the environment or its recycling. However, because the liquid may contain heavy metals or organic matter, current wastewater treatment systems do not remove these harmful components. Therefore, direct discharge of the filtered wastewater still pollutes the environment. Utility Model Content

[0003] The purpose of this utility model is to provide a sewage treatment system that is simple in structure, easy to use, and can effectively improve the above-mentioned problems.

[0004] The embodiments of this utility model are implemented as follows:

[0005] The present invention provides a wastewater treatment system, including a mud and water temporary storage tank, a stirring device, a dewatering device, a biological treatment tank, a sedimentation tank, and a disinfection tank.

[0006] The mud and water temporary storage tank is connected to the inlet of the mixing device through a pipe and a mud pump is installed on the pipe. The outlet of the mixing device is connected to the inlet of the dewatering device through a pipe and a mud pump is installed on the pipe. The outlet of the dewatering device is connected to the biological treatment tank through a pipe and a water pump is installed on the pipe. The biological treatment tank is connected to the sedimentation tank through a pipe and a water pump is installed on the pipe. The sedimentation tank is connected to the disinfection tank through a pipe and a water pump is installed on the pipe.

[0007] The mixing device includes a first frame, a housing, a first stirring paddle, a first drive mechanism, and a dosing machine. The housing is mounted on the first frame, and the first stirring paddle is horizontally mounted inside the housing. The two ends of the first stirring paddle are supported by bearing seats at both ends of the housing along its length. There are two first stirring paddles arranged in parallel and spaced apart. The first drive mechanism is mounted on the first frame and is used to drive the two first stirring paddles to rotate in opposite directions. The dosing machine is mounted on the top of the housing.

[0008] Furthermore, the dosing machine includes a drug storage hopper and a screw feeder. The screw feeder is located on the top of the housing. The drug storage hopper is supported on the top of the housing and its discharge port corresponds to the feed end of the screw feeder. The discharge end of the screw feeder corresponds to the dosing port on the top of the housing.

[0009] Furthermore, the first drive mechanism includes a first drive motor, a reducer, a first gear, and a second gear. The first drive motor and the reducer are both mounted on the first frame. The output shaft of the first drive motor is connected to the input shaft of the reducer. The output shaft of the reducer is connected to one end of one of the first stirring paddles. The first gear is mounted on the stirring shaft of one of the first stirring paddles, and the second gear is mounted on the stirring shaft of another first stirring paddle. The first gear and the second gear mesh with each other.

[0010] Furthermore, the number of teeth on the first gear is different from the number of teeth on the second gear.

[0011] Furthermore, the biological treatment tank is equipped with a second stirring paddle, the upper end of which is rotatably supported on the top of the biological treatment tank. The top of the biological treatment tank is also equipped with a second drive motor, the output shaft of which is connected to the upper end of the second stirring paddle.

[0012] Furthermore, the top of the sedimentation tank is equipped with an air-lifting box and a blower. The inlet of the air-lifting box is equipped with an air-lifting pipe, the lower end of which extends to the bottom of the sedimentation tank. The outlet of the air-lifting box is connected to the feed end of the dewatering device through a pipe, and the blower is connected to the air-lifting box through a pipe.

[0013] Furthermore, a disinfectant storage tank is provided on the top of the disinfection pool, and the disinfectant storage tank is connected to the disinfection pool through a pipe with a valve on the pipe.

[0014] Furthermore, the dewatering device is a belt filter press, a centrifugal dewatering machine, or a plate and frame filter press.

[0015] The beneficial effects of this utility model are as follows:

[0016] The wastewater treatment system provided by this utility model includes a stirring device that can pulverize the stirred materials, making the solids smaller and providing a guarantee for subsequent treatment; a dosing machine that adds flocculant to the tank to allow the tiny particles to coagulate and settle; a biological treatment tank that can remove heavy metals and other harmful components from the wastewater; a sedimentation tank that can further separate solids and liquids and reduce the solid particles in the liquid; and a disinfection tank that can disinfect the liquid, ensuring that the liquid discharged into the environment meets the standards and can also be used as domestic water without causing harm to health. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0018] Figure 1 A schematic diagram of the wastewater treatment system provided for an embodiment of this utility model;

[0019] Figure 2 This is a schematic diagram of the stirring device.

[0020] Figure 3 This is a schematic diagram of a dosing machine.

[0021] In the diagram: 1-Slurry storage tank; 2-Agitator; 21-First frame; 22-Box; 23-First agitator; 24-First drive mechanism; 241-First drive motor; 242-Reducer; 243-First gear; 244-Second gear; 25-Dosing machine; 251-Drug storage hopper; 252-Screw feeder; 3-Dehydration device; 4-Biological treatment tank; 41-Second agitator; 42-Second drive motor; 5-Sedimentation tank; 51-Air lift box; 52-Blower; 6-Disinfection tank. Detailed Implementation

[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, not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can typically 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, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other.

[0025] 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.

[0026] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," and "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 commonly used when the product of this utility model is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are only used 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. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0027] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" 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, a direct connection, or an indirect connection through an intermediate medium; or 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.

[0028] refer to Figure 1 As shown, this utility model provides a sewage treatment system, including a mud and water temporary storage tank 1, a stirring device 2, a dewatering device 3, a biological treatment tank 4, a sedimentation tank 5, and a disinfection tank 6.

[0029] Sludge storage tank 1 is used to temporarily store wastewater generated during drilling.

[0030] refer to Figure 2 As shown, the stirring device 2 includes a first frame 21, a housing 22, a first stirring paddle 23, a first drive mechanism 24, and a dosing machine 25.

[0031] The first frame 21 is a frame structure used to support the installation of other components. The housing 22 is mounted on the first frame 21. The housing 22 has a rectangular frame structure, with a feed inlet and a dosing inlet at the top, an arc-shaped bottom surface, and a discharge outlet with a valve at the bottom. The first stirring paddle 23 is horizontally positioned inside the housing 22. Both ends of the first stirring paddle 23 are supported by bearing seats along the length of the housing 22. There are two first stirring paddles 23, arranged parallel and spaced apart. Each first stirring paddle 23 includes a first stirring shaft and first stirring blades. The two ends of the first stirring shaft extend out of both ends of the housing 22 and are supported by bearing seats. The first stirring blades are detachably connected to the first stirring shaft, facilitating disassembly, replacement, and maintenance. There are multiple first stirring blades, arranged spirally along the axis of the first stirring shaft.

[0032] refer to Figure 3 As shown, the dosing machine 25 is located on the top of the housing 22. The dosing machine 25 includes a drug storage hopper 251 and a screw feeder 252. The screw feeder 252 is located on the top of the housing 22. The drug storage hopper 251 is supported on the top of the housing 22, and its discharge port corresponds to the feed end of the screw feeder 252. The discharge end of the screw feeder 252 corresponds to the dosing port on the top of the housing 22. The screw feeder 252 can quantitatively add flocculants and other drugs into the housing 22.

[0033] refer to Figure 2 As shown, the first drive mechanism 24 includes a first drive motor 241, a reducer 242, a first gear 243, and a second gear 244. The first drive motor 241 and the reducer 242 are both mounted on the first frame 21. The output shaft of the first drive motor 241 is connected to the input shaft of the reducer 242 via a coupling or a belt drive. In this embodiment, the belt drive is used. Both the output shaft of the first drive motor 241 and the input shaft of the reducer 242 are equipped with pulleys, which are connected by a belt. The output shaft of the reducer 242 is connected to one end of a first stirring paddle 23. The first gear 243 is mounted on the stirring shaft of one first stirring paddle 23, and the second gear 244 is mounted on the stirring shaft of another first stirring paddle 23. The first gear 243 and the second gear 244 mesh with each other. In this way, the first drive motor 241 can drive the two first stirring paddles 23 to rotate simultaneously. The first gear 243 and the second gear 244 have different numbers of teeth, so the rotation speed of the two first stirring paddles 23 is also different. When rotating and stirring, the mixture in the tank 22 can be mixed more evenly.

[0034] The inlet of the mud and water storage tank 1 is connected to the inlet of the container 22 via a pipeline, and a mud pump is installed on the pipeline. The outlet of the container 22 is connected to the inlet of the dewatering device 3 via a pipeline, and a mud pump is installed on the pipeline. The mud pump between the mud and water storage tank 1 and the container 22 can transport the wastewater in the mud and water storage tank 1 into the container 22, and the mud pump between the container 22 and the dewatering device 3 can transport the wastewater in the container 22 into the dewatering device 3 for solid-liquid separation.

[0035] The dewatering device 3 can be any one of a belt filter press, a centrifugal dewatering machine, or a plate and frame filter press. In this embodiment, a belt filter press is used.

[0036] The drain outlet of the dewatering device 3 is connected to the biological treatment tank 4 via a pipe, and a water pump is installed on the pipe. The water pump transports the liquid separated by the dewatering device 3 to the biological treatment tank 4. The biological treatment tank 4 contains microalgae and bacteria, such as *Mucor*, *Bacillus*, and *Pseudomonas nitrateophilus*. The microalgae and bacteria can remove organic matter such as nitrogen and phosphorus, as well as heavy metal ions such as Co, Mn, Hg, Pb, and Cd from the wastewater. To ensure sufficient contact between the wastewater and the microalgae and bacteria in the biological treatment tank 4 and improve treatment efficiency, a second stirring paddle 41 can be installed in the biological treatment tank 4. The upper end of the second stirring paddle 41 is rotatably supported on the top of the biological treatment tank 4. A second drive motor 42 is also installed on the top of the biological treatment tank 4. The output shaft of the second drive motor 42 is connected to the upper end of the second stirring paddle 41 via a coupling, so that the second drive motor 42 can drive the second stirring paddle 41 to rotate.

[0037] Biological treatment tank 4 and sedimentation tank 5 are connected by a pipeline equipped with a water pump. The water pump transports wastewater from biological treatment tank 4 to sedimentation tank 5 for settling, further separating solids and liquids. The upper layer is clear liquid, and the bottom layer is settled sludge. The clear liquid still contains certain harmful substances, and direct discharge into the environment would pollute it. Therefore, the liquid separated from sedimentation tank 5 needs to be disinfected before discharge. In this embodiment, a disinfection tank 6 is used to treat the liquid separated from sedimentation tank 5. Sedimentation tank 5 and disinfection tank 6 are connected by a pipeline equipped with a water pump, which transports the upper liquid from sedimentation tank 5 to disinfection tank 6. A disinfectant storage tank is located at the top of disinfection tank 6, connected to disinfection tank 6 by a pipeline equipped with a valve. When disinfection is needed, the valve is opened to add disinfectant. The water treated by disinfection tank 6 can be transported to where it is needed or directly discharged into the environment.

[0038] The sludge at the bottom of sedimentation tank 5 contains a large amount of water. Directly discharging this water-laden sludge would not only be inconvenient for transportation but would also pollute the environment. Therefore, dewatering treatment of the sludge is necessary. The top of sedimentation tank 5 is equipped with an air-lift box 51 and a blower 52. The inlet of the air-lift box 51 is equipped with an air-lift pipe, the lower end of which extends to the bottom of sedimentation tank 5. The outlet of the air-lift box 51 is connected to the feed end of the dewatering device 3 via a pipe. The blower 52 is connected to the air-lift box 51 via a pipe. The air-lift box 51 can transport the sludge from sedimentation tank 5 to the dewatering device 3 for dewatering treatment. The dewatered sludge can then be transferred to a designated location for landfill or incineration.

[0039] This utility model is not limited to the above-mentioned optional embodiments. Anyone can derive other forms of products under the guidance of this utility model. However, regardless of any changes made in its shape or structure, any technical solution that falls within the scope of the claims of this utility model shall be protected by this utility model.

Claims

1. A sewage treatment system characterised in that: It includes a mud and water temporary storage tank, a mixing device, a dewatering device, a biological treatment tank, a sedimentation tank, and a disinfection tank; The mud and water temporary storage tank is connected to the inlet of the mixing device through a pipe and a mud pump is installed on the pipe. The outlet of the mixing device is connected to the inlet of the dewatering device through a pipe and a mud pump is installed on the pipe. The outlet of the dewatering device is connected to the biological treatment tank through a pipe and a water pump is installed on the pipe. The biological treatment tank is connected to the sedimentation tank through a pipe and a water pump is installed on the pipe. The sedimentation tank is connected to the disinfection tank through a pipe and a water pump is installed on the pipe. The mixing device includes a first frame, a housing, a first stirring paddle, a first drive mechanism, and a dosing machine. The housing is mounted on the first frame, and the first stirring paddle is horizontally mounted inside the housing. The two ends of the first stirring paddle are supported by bearing seats at both ends of the housing along its length. There are two first stirring paddles arranged in parallel and spaced apart. The first drive mechanism is mounted on the first frame and is used to drive the two first stirring paddles to rotate in opposite directions. The dosing machine is mounted on the top of the housing.

2. The sewage treatment system of claim 1, wherein: The dosing machine includes a drug storage hopper and a screw feeder. The screw feeder is located on the top of the housing. The drug storage hopper is supported on the top of the housing and its discharge port corresponds to the feed end of the screw feeder. The discharge end of the screw feeder corresponds to the dosing port on the top of the housing.

3. The sewage treatment system of claim 1, wherein: The first drive mechanism includes a first drive motor, a reducer, a first gear, and a second gear. The first drive motor and the reducer are both mounted on the first frame. The output shaft of the first drive motor is connected to the input shaft of the reducer. The output shaft of the reducer is connected to one end of one of the first stirring paddles. The first gear is mounted on the stirring shaft of one of the first stirring paddles, and the second gear is mounted on the stirring shaft of another first stirring paddle. The first gear and the second gear mesh with each other.

4. The wastewater treatment system according to claim 3, characterized in that: The number of teeth on the first gear is different from the number of teeth on the second gear.

5. The sewage treatment system of claim 1, wherein: The biological treatment tank is equipped with a second stirring paddle, the upper end of which is rotatably supported on the top of the biological treatment tank. The top of the biological treatment tank is also equipped with a second drive motor, the output shaft of which is connected to the upper end of the second stirring paddle.

6. The sewage treatment system of claim 1, wherein: The sedimentation tank is equipped with an air-lifting box and a blower at the top. The air-lifting box has an air-lifting pipe at its inlet, and the lower end of the air-lifting pipe extends to the bottom of the sedimentation tank. The outlet of the air-lifting box is connected to the feed end of the dewatering device through a pipe. The blower is connected to the air-lifting box through a pipe.

7. The sewage treatment system of claim 1, wherein: The disinfection pool is equipped with a disinfectant storage tank at the top, and the disinfectant storage tank is connected to the disinfection pool through a pipe with a valve.

8. The sewage treatment system of claim 1, wherein: The dewatering device is a belt filter press, a centrifugal dewatering machine, or a plate and frame filter press.

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