Automatic sewage treatment system for mixing plant

Abstract

The utility model provides an automatic sewage treatment system for a mixing plant, which comprises a neutralizing tower, a spraying pipe network with anti-blocking atomizing nozzles is arranged in the neutralizing tower, an inlet of the spraying pipe network is communicated with a water inlet pipeline, a water inlet pump and a water inlet electromagnetic valve are arranged on the water inlet pipeline, and one end of the water inlet pipeline far away from the neutralizing tower is communicated with a raw water tank. An inlet of the raw water tank is communicated with a sewage pipeline, the sewage pipeline is provided with a sewage pump and a filter press, one end, far away from the raw water tank, of the sewage pipeline is communicated with a sewage tank, a gas inlet of the neutralizing tower is provided with a carbon dioxide gas supply device, a water outlet of the neutralizing tower is communicated with a water outlet pipeline, and the water outlet pipeline is provided with a water outlet pump and a water outlet electromagnetic valve; one end of the water outlet pipeline far away from the neutralizing tower is communicated with a precipitation filter tank. According to the automatic sewage treatment system for the mixing plant, solid materials in the sewage of the mixing plant can be separated, and the alkaline sewage of the mixing plant can be neutralized, so that the sewage of the mixing plant can reach the discharge or recycling standard.

Description

Technical Field

[0001] The utility model relates to the technical field of sewage treatment, in particular to an automatic sewage treatment system for a mixing station. Background Art

[0002] With the development of my country's economy and the acceleration of urbanization, the construction industry has developed rapidly. Concrete is one of the most important building materials. Mixing plants produce sewage when producing concrete. If the sewage from mixing plants is discharged at will, it will cause a large amount of water waste, and at the same time bring serious pollution to soil and groundwater resources, causing damage to the natural environment. The recycling of sewage from mixing plants not only has good economic benefits for enterprises, but also has good social benefits.

[0003] The main sources of wastewater from mixing stations are: 1. Waste gas concrete is separated by a sand and gravel separator, and a certain amount of clean water is required for flushing during the separation process. After the sand and gravel are separated, wastewater containing cement and admixture components is generated; 2. After the operation of mixers, mixer trucks and other production and transportation equipment, in order to prevent the concrete from sticking to the equipment and hardening, these concrete production and transportation equipment need to be flushed with water, and the flushing equipment will produce washing wastewater; 3. In order to keep the site clean, the mixing station needs to flush the production site with water regularly, and the sewage generated by flushing the site enters the wastewater recovery pool through the drainage ditch.

[0004] The Chinese patent with the existing authorization announcement number CN207076227U discloses a sewage treatment system for a mixing station, including a sewage pool, a filter box, and a primary clean water pool. The sewage pool is provided with a stirring paddle and a sewage pump. The filter box includes a sedimentation chamber and a clean water chamber, and the sedimentation chamber and the clean water chamber are separated by a partition. The side wall of the sedimentation chamber is provided with a water inlet connected to the sewage pump, and the bottom of the sedimentation chamber is provided with a solid phase discharge port, and the solid phase discharge port is provided with a movable material door. The side wall of the clean water chamber is provided with a water outlet, and the water outlet is connected to the primary clean water pool. When the sewage treatment system of the mixing station is working, the sewage pump draws the sewage in the sewage pool into the sedimentation chamber of the filter box, and the solid material in the sewage is precipitated at the bottom of the sedimentation chamber. The solid material is discharged from the sedimentation chamber through the solid phase discharge port, and the sewage after sedimentation treatment enters the primary clean water pool through the water outlet.

[0005] The above-mentioned existing technical solutions have the following defects: the mixing station sewage treatment system only performs sedimentation treatment on the sewage to remove the solids in the sewage. Since the mixing station sewage is alkaline sewage, which contains a large amount of inorganic salts (calcium salts, magnesium salts), free ions (calcium ions, magnesium ions, hydroxide ions) and inactive concrete components, the sewage after only removing the solids is still alkaline. Direct discharge of alkaline sewage will cause serious pollution and damage to groundwater, domestic water and the natural environment; while the alkaline sewage is directly reused without treatment, the free ions and inorganic salts therein have the risk of corrosion or scaling and clogging of equipment and pipelines, and the inactive concrete components have a serious impact on the product quality, thereby affecting the quality of concrete buildings. The existing mixing station sewage treatment system has the problem of poor sewage treatment effect. Utility Model Content

[0006] The problem to be solved by the utility model is to provide an automatic sewage treatment system for a mixing station in view of the above-mentioned deficiencies existing in the prior art, which solves the technical problem of poor sewage treatment effect existing in the prior art.

[0007] The above-mentioned utility model object of the utility model is achieved through the following technical scheme: an automated sewage treatment system for a mixing station, comprising a neutralization tower, wherein a spray pipe network with an anti-blocking atomizing nozzle is arranged in the neutralization tower, the inlet of the spray pipe network is connected to a water inlet pipe, a water inlet pump and a water inlet solenoid valve are arranged on the water inlet pipe, the end of the water inlet pipe away from the neutralization tower is connected to a raw water tank, the inlet of the raw water tank is connected to a sewage pipe, a sewage pump and a filter press are arranged on the sewage pipe, the end of the sewage pipe away from the raw water tank is connected to the sewage tank, a carbon dioxide gas supply device is arranged at the air inlet of the neutralization tower, the water outlet of the neutralization tower is connected to a water outlet pipe, a water outlet pump and a water outlet solenoid valve are arranged on the water outlet pipe, and the end of the water outlet pipe away from the neutralization tower is connected to a sedimentation filter tank.

[0008] The utility model is further configured as follows: the carbon dioxide gas supply device comprises a gas supply pipeline connected to the gas inlet of the neutralization tower, a vaporizer and a gas solenoid valve arranged on the gas supply pipeline, and a carbon dioxide storage tank arranged at one end of the gas supply pipeline away from the neutralization tower.

[0009] The utility model is further configured as follows: the sedimentation and filtration pool comprises a pool body and a pool cover arranged on the top of the pool body, a sedimentation chamber and a clean water chamber are provided on the top surface of the pool body, a filter hole connecting the sedimentation chamber and the clean water chamber is provided in the pool body, and a filter element is provided in the filter hole.

[0010] The utility model is further configured as follows: the filter element comprises a mesh frame arranged in the filter hole and having a mounting hole, a filter mesh arranged in the mounting hole, and a fixing plate arranged on a side wall of the mesh frame and connected to a hole wall of the filter hole.

[0011] The utility model is further configured as follows: a flanged groove is provided on the bottom wall of the sedimentation chamber, a valve hole is provided on the bottom wall of the flanged groove, a drain valve is provided in the valve hole, the drain valve comprises a drain valve body plugged with the valve hole, a drain inlet connected to the sedimentation chamber is provided on the top surface of the drain valve body, a drain inner groove connected to the drain inlet is provided on the bottom surface of the drain valve body, a bottom cover plate is provided on the bottom surface of the drain valve body, a drain outlet connected to the drain inner groove is provided on the bottom surface of the bottom cover plate, a valve ball whose spherical surface abuts against the lower edge of the drain inlet is movably provided in the drain inner groove, and a top ball spring is provided between the valve ball and the bottom cover plate.

[0012] The utility model is further configured as follows: a ball stabilizing guide hole is opened on the bottom surface of the bottom cover plate, a ball stabilizing guide column is provided at the bottom of the valve ball, the ball stabilizing guide column passes through the ball stabilizing guide hole and slidably cooperates with the ball stabilizing guide hole, and the top ball spring is sleeved on the ball stabilizing guide column.

[0013] The utility model is further configured as follows: a sewage discharge boss is arranged on the end face of the bottom cover plate facing the sewage discharge valve body, a spring groove connected with the ball stabilizing guide hole is opened on the end face of the sewage discharge boss away from the bottom cover plate, a ball stabilizing guide disk slidingly matched with the spring groove is arranged on the outer side wall of the ball stabilizing guide column, a sealing ring is sleeved on the side wall of the ball stabilizing guide disk, and the top ball spring is located between the ball stabilizing guide disk and the bottom cover plate.

[0014] The utility model is further configured as follows: a sewage pipe is arranged below the pool body, and a sewage pipe inlet connected to the sewage outlet is opened on the top surface of the sewage pipe.

[0015] The utility model is further configured as follows: the clean water cavity is connected with a clean water pipeline penetrating the pool cover, a clean water pump is arranged on the clean water pipeline, and one end of the clean water pump away from the sedimentation and filtration pool is connected with a water storage tank.

[0016] The utility model is further configured as follows: a stirrer is arranged on the sewage pool.

[0017] To sum up, the beneficial technical effect of the utility model is that the automatic treatment system of mixing station wastewater can not only separate the solid materials in the mixing station wastewater, but also neutralize the alkaline mixing station wastewater, so that the mixing station wastewater can meet the standards for discharge or recycling. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the automatic sewage treatment system of the mixing station in the utility model;

[0019] Figure 2 It is a cross-sectional structural diagram of the sedimentation and filtration tank in the utility model;

[0020] Figure 3 It is a structural schematic diagram of the filter element in the utility model;

[0021] Figure 4 It is a cross-sectional structural diagram of the sewage discharge valve in the utility model.

[0022] In the above drawings: 1, neutralization tower; 2, spray pipe network; 3, anti-blocking atomizing nozzle; 4, sewage pool; 5, agitator; 6, sewage pipeline; 7, sewage pump; 8, filter press; 9, raw water pool; 10, water inlet pipeline; 11, water inlet pump; 12, water inlet solenoid valve; 13, carbon dioxide storage tank; 14, gas supply pipeline; 15, vaporizer; 16, gas solenoid valve; 17, water outlet pipeline; 18, water outlet pump; 19, water outlet solenoid valve; 20, sedimentation and filtration pool; 201, pool body; 202, pool cover; 21, sedimentation chamber; 22, clean water chamber; 23, filter hole; 24, filter element; 241. Frame; 242. Mounting hole; 243. Filter; 244. Fixing plate; 25. Flanged groove; 26. Valve hole; 27. Drain valve; 28. Drain valve body; 29. ​​Valve body flange; 30. Drain inlet; 31. Drain inner groove; 32. Bottom cover plate; 33. Drain outlet; 34. Drain boss; 35. Spring groove; 36. Ball guide hole; 37. Valve ball; 38. Ball guide boss; 39. Ball guide plate; 40. Sealing ring; 41. Ball spring; 42. Drain pipe; 43. Drain pipe inlet; 44. Clean water pipeline; 45. Clean water pump; 46. Reservoir. DETAILED DESCRIPTION

[0023] In order to make the technical means, creative features, objectives and functions achieved by the present invention clearer and easier to understand, the present invention is further described below in conjunction with the accompanying drawings and specific implementation methods.

[0024] like Figure 1 As shown, the utility model proposes an automatic sewage treatment system for a mixing station, including a neutralization tower 1, a water inlet device, a carbon dioxide gas supply device, a sedimentation and filtration tank 20, a water storage tank 46, and a controller.

[0025] like Figure 1 As shown, the neutralization tower 1 is used for neutralization reaction of carbon dioxide and alkaline wastewater. The top of the neutralization tower 1 has an air inlet, the bottom of the neutralization tower 1 has a water outlet, and a spray pipe network 2 with an anti-blocking atomizing nozzle 3 is arranged in the neutralization tower 1.

[0026] like Figure 1 As shown, the water inlet device includes a sewage tank 4, a sewage pipeline 6, a raw water tank 9, and a water inlet pipeline 10.

[0027] like Figure 1As shown, the sewage pool 4 is used to store the sewage from the mixing station. The sewage pool 4 is provided with a stirrer 5, which is an existing stirring device and will not be described in detail here. When the sewage pool 4 is working, the stirrer 5 stirs the sewage in the sewage pool 4 to prevent the solid materials in the sewage from settling in the sewage pool 4, so that the solid materials and the sewage can be extracted together.

[0028] like Figure 1 As shown, a sewage pump 7 and a filter press 8 are provided on the sewage pipeline 6. One end of the sewage pump 7 is connected to the outlet of the sewage pool 4, and the other end is connected to the filter press 8. The sewage pump 7 pumps the sewage from the sewage pool 4 to the filter press 8. The filter press 8 is a solid-liquid separation device that uses a filter medium to apply a certain pressure to the sewage so that the liquid is dialyzed. The filter press 8 separates the solid material in the sewage of the mixing station, and the dialyzed alkaline sewage enters the raw water pool 9 through the sewage pipeline 6.

[0029] like Figure 1 As shown, the raw water tank 9 is used to store alkaline sewage after solid materials are removed.

[0030] like Figure 1 As shown, one end of the water inlet pipe 10 is connected to the outlet of the raw water pool 9, and the other end is connected to the inlet of the sprinkler network 2. A water inlet pump 11 and a water inlet solenoid valve 12 are provided on the water inlet pipe 10. The water inlet solenoid valve 12 is electrically connected to the controller, and the controller can control the water inlet solenoid valve 12 to automatically adjust the water flow of the water inlet pipe 10.

[0031] like Figure 1 As shown, the carbon dioxide gas supply device includes a carbon dioxide storage tank 13, a gas supply pipeline 14, a vaporizer 15, and a gas solenoid valve 16. One end of the gas supply pipeline 14 is connected to the air inlet of the neutralization tower 1, and the other end is connected to the carbon dioxide storage tank 13, and liquid carbon dioxide is stored in the carbon dioxide storage tank 13. The gas supply pipeline 14 is provided with a vaporizer 15 and a gas solenoid valve 16, the vaporizer 15 is used to convert liquid carbon dioxide into gaseous carbon dioxide, the gas solenoid valve 16 is used to adjust the flow of gaseous carbon dioxide, and the gas solenoid valve 16 is electrically connected to the controller, and the controller can control the gas solenoid valve 16 to automatically adjust the flow of gaseous carbon dioxide.

[0032] When the automatic sewage treatment system of the mixing station is working, the carbon dioxide supply device sends carbon dioxide into the neutralization tower 1, and the water inlet device sends the alkaline sewage after the solid materials are removed into the spray pipe network 2. The alkaline sewage in the spray pipe network 2 is atomized and sprayed out through the anti-blocking atomizing nozzle 3. The atomized alkaline sewage can fully contact with the carbon dioxide in the neutralization tower 1 and undergo a neutralization reaction. After the neutralization reaction of the alkaline sewage and the carbon dioxide, water and carbonate insolubles will be generated.

[0033] like Figure 1As shown, the water outlet of the neutralization tower 1 is connected to a water outlet pipeline 17 , on which a water outlet pump 18 and a water outlet solenoid valve 19 are provided. The water outlet solenoid valve 19 is electrically connected to a controller, and the controller can control the water flow rate of the water outlet pipeline 17 automatically by the water outlet solenoid valve 19 .

[0034] like Figure 1 and 2 As shown, one end of the outlet pipe 17 away from the neutralization tower 1 is connected to a sedimentation and filtration tank 20 , and the sedimentation and filtration tank 20 includes a tank body 201 and a tank cover 202 .

[0035] like Figure 1 and 2 As shown, a sedimentation chamber 21 and a clean water chamber 22 are opened on the top surface of the pool body 201, and a pool cover 202 is screwed to the top of the pool body 201. The pool cover 202 closes the openings of the sedimentation chamber 21 and the clean water chamber 22. The water outlet pump 18 is fixedly installed on the top surface of the pool cover 202, and one end of the water outlet pipe 17 close to the sedimentation filter tank 20 passes through the pool cover 202 and extends into the sedimentation chamber 21.

[0036] like Figure 2 and 3 As shown, a filter hole 23 is provided on the pool body 201 to connect the sedimentation chamber 21 and the clean water chamber 22. A filter element 24 is arranged in the filter hole 23. The filter element 24 includes a mesh frame 241 and a filter screen 243. A mounting hole 242 is provided on the mesh frame 241. The filter screen 243 is arranged in the mounting hole 242. A fixing plate 244 is fixedly connected to the side wall of the mesh frame 241. The fixing plate 244 is screwed to the hole wall of the filter hole 23.

[0037] like Figure 2 and 4 As shown, a flanged groove 25 with a circular cross section is provided on the bottom wall of the sedimentation chamber 21, and a valve hole 26 with a circular cross section is provided on the bottom wall of the flanged groove 25. A drain valve 27 is provided in the valve hole 26, and the drain valve 27 includes a drain valve body 28 and a bottom cover plate 32.

[0038] like Figure 2 and 4 As shown, the drain valve body 28 is plugged into the valve hole 26, and the top of the outer wall of the drain valve body 28 is fixedly connected with a valve body flange 29 that is plugged into the flange groove 25. The valve body flange 29 is screwed to the pool body 201, and the drain valve body 28 is fixed in the valve hole 26.

[0039] like Figure 4As shown, a sewage inlet 30 with a circular cross section is provided on the top surface of the sewage valve body 28, and the sewage inlet 30 is connected to the sedimentation chamber 21. A sewage inner groove 31 is provided on the bottom surface of the sewage valve body 28, and the sewage inner groove 31 is connected to the sewage inlet 30. The sewage inner groove 31 is a circular groove, and the diameter of the sewage inner groove 31 is larger than the diameter of the sewage inlet 30.

[0040] like Figure 4 As shown, the bottom cover plate 32 is screwed to the bottom surface of the sewage valve body 28, and the bottom cover plate 32 closes the opening at the bottom of the sewage inner tank 31. A plurality of sewage outlets 33 are provided on the bottom surface of the bottom cover plate 32, and the plurality of sewage outlets 33 are equidistantly distributed in a circle, and the sewage outlets 33 are connected to the sewage inner tank 31.

[0041] like Figure 4 As shown, a drainage boss 34 is fixedly connected to the end surface of the bottom cover plate 32 facing the drainage valve body 28. The drainage boss 34 is cylindrical and inserted into the drainage inner groove 31. A spring groove 35 is provided on the end surface of the drainage boss 34 away from the bottom cover plate 32. The spring groove 35 is a circular groove. A ball stabilizing guide hole 36 is provided on the bottom wall of the spring groove 35 and passes through the bottom cover plate 32. The ball stabilizing guide hole 36 is a circular hole, and the diameter of the ball stabilizing guide hole 36 is smaller than the diameter of the spring groove 35.

[0042] like Figure 4 As shown, a spherical valve ball 37 is movably arranged in the sewage discharge inner groove 31, and a ball stabilizing guide column 38 is fixedly connected below the valve ball 37. The ball stabilizing guide column 38 is cylindrical and passes through the spring groove 35 and the ball stabilizing guide hole 36 in sequence. The ball stabilizing guide column 38 slides with the ball stabilizing guide hole 36. When the spherical surface of the valve ball 37 abuts against the lower edge of the sewage inlet 30, the valve ball 37 closes the sewage inlet 30; when the spherical surface of the valve ball 37 separates from the lower edge of the sewage inlet 30, the sewage inlet 30 is opened.

[0043] like Figure 4 As shown, a ball stabilizing guide plate 39 is fixedly connected to the ball stabilizing guide column 38. The ball stabilizing guide plate 39 is disc-shaped and slidingly cooperates with the spring groove 35. A sealing ring 40 is sleeved on the side wall of the ball stabilizing guide plate 39. The provision of the sealing ring 40 is helpful to improve the sealing between the ball stabilizing guide plate 39 and the spring groove 35.

[0044] like Figure 4 As shown, a top ball spring 41 is sleeved on the ball stabilizing guide column 38, and the top ball spring 41 is located in the spring groove 35. One end of the top ball spring 41 abuts against the bottom surface of the ball stabilizing guide plate 39, and the other end abuts against the top surface of the bottom cover plate 32. The top ball spring 41 is used to push the ball stabilizing guide plate 39 upward, thereby making the spherical surface of the valve ball 37 abut against the lower edge of the sewage inlet 30, so that the valve ball 37 can maintain the state of closing the sewage inlet 30.

[0045] like Figure 2 As shown, a sewage pipe 42 is disposed below the tank body 201 , and a sewage pipe inlet 43 communicating with the sewage outlet 33 is formed on the top surface of the sewage pipe 42 .

[0046] The detailed working process of the sedimentation and filtration tank 20 is as follows: the water and carbonate insolubles in the neutralization tower 1 enter the sedimentation chamber 21 of the sedimentation and filtration tank 20 through the outlet pipe 17 and the outlet solenoid valve 19, and the carbonate insolubles will be precipitated at the bottom of the sedimentation chamber 21. The upper water enters the clean water chamber 22 after being filtered by the filter screen 243. When the water and carbonate insolubles in the sedimentation chamber 21 reach the preset requirements, the gravity of the water and carbonate insolubles on the valve ball 37 will cause the valve ball 37 to move downward, and the spherical surface of the valve ball 37 will separate from the lower edge of the sewage inlet 30. At this time, the sewage inlet 30 is opened, and the carbonate insolubles and a small amount of sewage pass through the sewage inlet 30, the sewage inner tank 31, the sewage outlet 33, and the sewage pipe inlet 43 in turn and enter the sewage pipe 42, and finally are discharged along the sewage pipe 42.

[0047] like Figure 1 and 2 As shown, the clean water chamber 22 is connected to a clean water pipeline 44, which passes through the pool cover 202. A clean water pump 45 is provided on the clean water pipeline 44, and the clean water pump 45 is fixedly installed on the top surface of the pool cover 202. A water reservoir 46 connected to the clean water pipeline 44 is provided at one end away from the sedimentation and filtration tank 20, and the water reservoir 46 is used to store the clean water treated by the sedimentation and filtration tank 20.

[0048] This mixing station wastewater automatic treatment system can not only separate the solid materials in the mixing station wastewater, but also neutralize the alkaline mixing station wastewater, so that the mixing station wastewater can meet the standards for discharge or recycling.

[0049] This mixing station sewage automation treatment system realizes the automatic neutralization treatment of alkaline sewage by setting up a controller. It has the advantages of safety, environmental protection, high efficiency, energy saving, economy and simple operation.

[0050] Precautions for this mixing station sewage automation treatment system:

[0051] 1. The cryogenic liquid carbon dioxide storage tank 13 is a special equipment, which requires full-time personnel to manage and operate. Operators must undergo training before taking up their posts. The installation, use and maintenance of this equipment shall comply with JB / T6898-2015 "Safety Rules for the Use of Cryogenic Liquid Storage and Transportation Equipment". This equipment should be placed outdoors in a well-ventilated place. CO2 gas is highly asphyxiating, and there is a risk of asphyxiation when the concentration is too high.

[0052] 2. Liquid carbon dioxide is stored under pressure (pressure not less than 1.7MPa). During storage, except for the pressure gauge, liquid level gauge and safety valve, other valves should be closed. When the tank pressure exceeds 2.5MPa, the safety valve will automatically open to exhaust and reduce the pressure.

[0053] 3. Liquid carbon dioxide is a low-temperature liquid that is very easy to vaporize. The vaporization process absorbs a lot of heat and can easily cause burns. Prevent leakage during use. Wear professional protective clothing when operating liquid storage tanks.

[0054] 4. When repairing equipment, the main power supply of the electrical control cabinet must be turned off and repair must be carried out by a dedicated person.

[0055] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. An automated sewage treatment system for a mixing station, characterized in that: The invention comprises a neutralization tower (1), wherein a spray pipe network (2) having an anti-blocking atomizing nozzle (3) is arranged in the neutralization tower (1), the inlet of the spray pipe network (2) is connected to a water inlet pipe (10), the water inlet pipe (10) is provided with a water inlet pump (11) and a water inlet solenoid valve (12), the end of the water inlet pipe (10) away from the neutralization tower (1) is connected to a raw water pool (9), the inlet of the raw water pool (9) is connected to a sewage pipe (6), and the sewage pipe (6) is provided with a water pump (11) and a water pump (12) A sewage pump (7) and a filter press (8) are provided, the end of the sewage pipeline (6) away from the raw water pool (9) is connected to the sewage pool (4), the air inlet of the neutralization tower (1) is provided with a carbon dioxide gas supply device, the water outlet of the neutralization tower (1) is connected to a water outlet pipeline (17), the water outlet pipeline (17) is provided with a water outlet pump (18) and a water outlet solenoid valve (19), and the end of the water outlet pipeline (17) away from the neutralization tower (1) is connected to a sedimentation filter pool (20).

2. The automatic sewage treatment system for a mixing station according to claim 1 is characterized by: The carbon dioxide gas supply device comprises a gas supply pipeline (14) connected to the gas inlet of the neutralization tower (1), a vaporizer (15) and a gas solenoid valve (16) arranged on the gas supply pipeline (14), and a carbon dioxide storage tank (13) arranged at an end of the gas supply pipeline (14) away from the neutralization tower (1).

3. The automatic sewage treatment system for a mixing station according to claim 1 is characterized by: The sedimentation and filtration tank (20) comprises a tank body (201) and a tank cover (202) arranged on the top of the tank body (201); a sedimentation chamber (21) and a clean water chamber (22) are provided on the top surface of the tank body (201); a filter hole (23) is provided in the tank body (201) for connecting the sedimentation chamber (21) and the clean water chamber (22); a filter element (24) is provided in the filter hole (23).

4. The automatic sewage treatment system for a mixing station according to claim 3 is characterized by: The filter element (24) comprises a mesh frame (241) disposed in the filter hole (23) and having a mounting hole (242), a filter screen (243) disposed in the mounting hole (242), and a fixing plate (244) disposed on the side wall of the mesh frame (241) and connected to the hole wall of the filter hole (23).

5. The automatic sewage treatment system for a mixing station according to claim 3 is characterized by: The bottom wall of the sedimentation chamber (21) is provided with a flanged groove (25), the bottom wall of the flanged groove (25) is provided with a valve hole (26), a sewage valve (27) is arranged in the valve hole (26), the sewage valve (27) comprises a sewage valve body (28) plugged into the valve hole (26), a sewage inlet (30) communicating with the sedimentation chamber (21) is provided on the top surface of the sewage valve body (28), and a sewage inlet (30) communicating with the sedimentation chamber (21) is provided on the bottom surface of the sewage valve body (28). A sewage discharge inner groove (31) connected to a sewage inlet (30) is provided, a bottom cover plate (32) is provided on the bottom surface of the sewage discharge valve body (28), a sewage outlet (33) connected to the sewage discharge inner groove (31) is provided on the bottom surface of the bottom cover plate (32), a valve ball (37) whose spherical surface abuts against the lower edge of the sewage inlet (30) is movably provided in the sewage discharge inner groove (31), and a top ball spring (41) is provided between the valve ball (37) and the bottom cover plate (32).

6. The automatic sewage treatment system for a mixing station according to claim 5 is characterized by: A ball stabilizing guide hole (36) is provided on the bottom surface of the bottom cover plate (32), and a ball stabilizing guide column (38) is provided at the bottom of the valve ball (37) and passes through the ball stabilizing guide hole (36) and slidably cooperates with the ball stabilizing guide hole (36), and the top ball spring (41) is sleeved on the ball stabilizing guide column (38).

7. The automatic sewage treatment system for a mixing station according to claim 6 is characterized by: A sewage discharge boss (34) is arranged on the end surface of the bottom cover plate (32) facing the sewage discharge valve body (28); a spring groove (35) connected to the ball stabilizing guide hole (36) is opened on the end surface of the sewage discharge boss (34) facing away from the bottom cover plate (32); a ball stabilizing guide disk (39) slidably matched with the spring groove (35) is arranged on the outer wall of the ball stabilizing guide column (38); a sealing ring (40) is sleeved on the side wall of the ball stabilizing guide disk (39); and the top ball spring (41) is located between the ball stabilizing guide disk (39) and the bottom cover plate (32).

8. The automatic sewage treatment system for a mixing station according to claim 3 is characterized by: A sewage pipe (42) is provided below the tank body (201), and a sewage pipe inlet (43) communicating with the sewage outlet (33) is provided on the top surface of the sewage pipe (42).

9. The automatic sewage treatment system for a mixing station according to claim 3 is characterized by: The clean water chamber (22) is connected to a clean water pipeline (44) that passes through the pool cover (202), and a clean water pump (45) is arranged on the clean water pipeline (44). One end of the clean water pump (45) away from the sedimentation and filtration pool (20) is connected to a water storage tank (46).

10. The automatic sewage treatment system for a mixing station according to claim 1 is characterized by: The sewage pool (4) is provided with an agitator (5).

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