Vitamin B12 wastewater treatment equipment and treatment method thereof

Abstract

The invention discloses vitamin B12 wastewater treatment equipment which comprises a tank body and a mounting frame, a machine body is mounted on the mounting frame, the discharging end of the tank body is connected with the feeding end of the machine body through a communicating pipe, the outer side wall of the tank body is communicated with a sludge discharging pipe and a sampling pipe, a mixing barrel is mounted on the inner bottom wall of the tank body, and a discharging pipe is mounted on the inner bottom wall of the mixing barrel. An air inlet pipe and a feeding pipe are inserted into the lower end of the tank body, and a material collecting barrel is mounted on the inner top wall of the tank body; the invention also discloses a vitamin B12 wastewater treatment method. The method comprises the following steps: S1, grid filtration; s2, wastewater adjustment; s3, chemical treatment; s4, biological treatment; s5, an advanced treatment stage; and S5, an advanced treatment stage. The device has the advantages of stable structure, realization of efficient mixing and treatment of chemicals and wastewater, multi-stage synergism of the process, adaptation to different water qualities, simplicity, convenience and reliability in operation, cost saving, environmental friendliness, reduction of pollutant discharge and secondary pollution of sludge, and high practical value.

Description

Technical Field

[0001] The present invention relates to the technical field of wastewater treatment, and in particular to vitamin B12 wastewater treatment equipment and a treatment method thereof. Background Art

[0002] With the widespread application of vitamin B12 in medicine, food and other fields, its production scale has continued to expand. However, the problem of wastewater generated during the production of vitamin B12 has also become increasingly prominent. The composition of vitamin B12 wastewater is extremely complex. The wastewater not only contains high concentrations of organic matter, such as unreacted raw materials, intermediates and various metabolites, but may also contain large amounts of suspended matter, heavy metal ions and other impurities. Most of these organic substances are difficult to degrade, and traditional treatment methods are difficult to effectively remove them. Secondly, the amount and quality of wastewater fluctuate greatly. The amount of wastewater generated and the concentration of pollutants may vary greatly at different stages and batches of the production process, as well as under different production process conditions. This poses a great challenge to wastewater treatment.

[0003] Traditional vitamin B12 wastewater treatment methods mainly include physical, chemical and biological methods. Physical methods such as sedimentation and filtration can only remove some large suspended particles in the wastewater, and have little effect on the removal of dissolved organic matter. Chemical methods such as flocculation and oxidation, although they can remove some organic matter and heavy metal ions to a certain extent, often require the consumption of a large amount of chemical agents, are costly, and may cause secondary pollution. Biological methods mainly use microorganisms to degrade organic matter in wastewater, but the treatment effect on high-concentration difficult-to-degrade organic matter is limited, and microorganisms have more stringent requirements on environmental conditions. Fluctuations in wastewater quality may affect the growth and metabolism of microorganisms, resulting in unstable treatment effects.

[0004] To this end, we propose a vitamin B12 wastewater treatment equipment and a treatment method thereof to solve the above problems. Summary of the Invention

[0005] The purpose of the present invention is to solve the problems in the prior art and to propose a vitamin B12 wastewater treatment device and a treatment method thereof.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A vitamin B12 wastewater treatment device comprises a tank body and a mounting frame, wherein the mounting frame is mounted on the body, and the discharge end of the tank body is connected to the feed end of the body through a connecting pipe, wherein the outer wall of the tank body is connected with a mud discharge pipe and a sampling pipe, and the sampling pipe is located above the mud discharge pipe, a mixing barrel is mounted on the inner bottom wall of the tank body, and the opening of the mixing barrel is arranged at the upper end, an air intake pipe and a feed pipe are inserted into the lower end of the tank body, and both the air intake pipe and the feed pipe pass through the tank body and extend into the mixing barrel, a collecting barrel is mounted on the inner top wall of the tank body, and one end of the collecting barrel extends outside the tank body and is connected to the connecting pipe;

[0008] A protective cover is installed on the upper end surface of the tank body, and a feed hopper and a motor are installed on the protective cover. The output shaft of the motor extends into the protective cover and is installed with a gear reduction assembly. The lower end of the feed hopper is connected to a feed rotating rack, and the feed rotating rack is located in the tank body, and the mixing barrel is located in the feed rotating rack.

[0009] In the above-mentioned vitamin B12 wastewater treatment equipment, an umbrella-shaped guide plate is installed on the outer wall of the mixing barrel, and the lower end of the umbrella-shaped guide plate is fixedly connected to the inner bottom wall of the tank body. A reinforcement frame is installed on the outer wall of the umbrella-shaped guide plate, and the end of the reinforcement frame away from the umbrella-shaped guide plate is fixedly connected to the inner wall of the tank body.

[0010] In the above-mentioned vitamin B12 wastewater treatment equipment, the gear reduction assembly includes a sealing mounting seat, and the sealing mounting seat is installed on the tank body, a pipe shaft is installed on the sealing mounting seat, and the upper end of the feed rotating frame passes through the pipe shaft and is connected to the feed hopper, a large gear is installed on the pipe shaft, the output shaft of the motor extends into the protective cover and is installed with a small gear, and the small gear is engaged with the large gear.

[0011] In the above-mentioned vitamin B12 wastewater treatment equipment, the feed rotating frame includes a plurality of ring tubes arranged at equal distances, and the outer wall of each ring tube is symmetrically connected to a plurality of branch tubes, and the plurality of ring tubes are commonly connected to a plurality of vertical connecting tubes, and the upper ends of the plurality of vertical connecting tubes are commonly connected to a feed main pipe, and the feed main pipe is located inside the pipe axis and is connected to the feed hopper.

[0012] In the above-mentioned vitamin B12 wastewater treatment equipment, the collecting cylinder includes a ring-shaped cylinder and an extension cylinder, and the extension cylinder is inserted on the side wall of the tank body, and the ring-shaped cylinder is fixedly connected to the inner top wall of the tank body, and one end of the connecting tube is inserted at the bottom of the extension cylinder, and a liquid inlet hole is opened at the end of the ring-shaped cylinder away from the extension cylinder, and a filter screen is installed on the liquid inlet hole.

[0013] In the above-mentioned vitamin B12 wastewater treatment equipment, the upper end of the body is connected to a feed pipe, the lower end of the body is connected to a liquid outlet pipe, and a number of guide plates are arranged at equal distances in the body. One end of each guide plate is fixedly connected to a filter plate, and the filter plate is fixedly connected to the inner wall of the body.

[0014] In the above-mentioned vitamin B12 wastewater treatment equipment, a plurality of aeration branch pipes are inserted into the side wall of the machine body, and each aeration branch pipe is located between two adjacent guide plates. The side of the plurality of aeration branch pipes away from the machine body is connected to the aeration main pipe.

[0015] In the above-mentioned vitamin B12 wastewater treatment equipment, a reaction cylinder is installed on the inner top wall of the tank body, and the mixing cylinder and the feeding rotary rack are both located in the reaction cylinder.

[0016] A method for treating vitamin B12 wastewater comprises the following steps:

[0017] S1. Screen filtration: Coarse and fine screens are set to remove larger solid impurities in the wastewater, such as waste residue and fibers, to prevent these impurities from clogging and damaging subsequent treatment equipment;

[0018] S2. Wastewater regulation: Wastewater enters the regulating tank, where the water volume and quality are regulated to keep the wastewater flow and pollutant concentration relatively stable so that subsequent treatment processes can operate stably. The regulating tank can be equipped with a stirring device to prevent suspended matter from settling.

[0019] S3, chemical treatment: wastewater and treatment agents are respectively introduced into the feed pipe and feed hopper into the tank body. Treatment agents can be selected from flocculants (such as polyaluminium chloride, etc.), oxidants (such as hydrogen peroxide, etc.) according to actual conditions;

[0020] S4, biological treatment; wastewater enters the body through the connecting pipe, and flows under the guidance of the guide plate, extending the flow path of the wastewater in the body; a number of aeration branches are inserted into the side wall of the body, each aeration branch is located between two adjacent guide plates, and multiple aeration branches are connected to the aeration main pipe. Aeration is introduced into the body through the aeration branches to promote the biochemical reaction during the wastewater treatment process;

[0021] S5, advanced treatment stage: After biological treatment, the wastewater can enter the filtration device again as needed, such as sand filter, activated carbon filter, etc., to further remove suspended solids and residual organic matter in the wastewater and improve the effluent quality;

[0022] S6. Disinfection: To ensure the sanitation and safety of the effluent, the wastewater can be disinfected, such as by ultraviolet disinfection, chlorine dioxide disinfection, etc. The disinfected wastewater can be reused or discharged as needed.

[0023] Compared with the existing technology, the beneficial effects of the present invention are:

[0024] 1. Through the cooperation of the feeding rotary rack and the mixing barrel, the wastewater and the treatment agent are mixed quickly and evenly, which improves the treatment efficiency. The feeding rotary rack can evenly disperse the treatment agent into the tank body, fully contact with the wastewater, and accelerate the reaction process.

[0025] 2. The setting of the feed plate, filter plate and aeration branch pipe in the body extends the treatment path of the wastewater and increases the contact time between the wastewater and the treatment medium. At the same time, aeration promotes biochemical reactions and further improves the treatment effect.

[0026] 3. Through multiple stages such as pretreatment, chemical treatment, biological treatment and deep treatment, various pollutants in the wastewater are gradually removed to ensure that the final effluent water quality meets the standards. Each stage has a specific role, such as pretreatment to remove large particles of impurities, chemical treatment to remove some organic matter and suspended solids, biological treatment to further degrade organic matter, and deep treatment to improve the effluent water quality.

[0027] In summary, the present invention has a stable structure, realizes efficient mixing and treatment of reagents and wastewater, has multi-stage coordinated process, adapts to different water qualities, is simple and reliable to operate, saves costs and is environmentally friendly, reduces pollution emissions and secondary pollution of sludge, and has high practical value. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a schematic structural diagram of a vitamin B12 wastewater treatment device proposed by the present invention;

[0029] Figure 2 This is a schematic diagram of the internal structure of a vitamin B12 wastewater treatment device proposed by the present invention;

[0030] Figure 3 This is an enlarged view of the structure of the feed plate in the vitamin B12 wastewater treatment equipment proposed by the present invention;

[0031] Figure 4 This is an enlarged view of the internal structure of the tank in a vitamin B12 wastewater treatment device proposed by the present invention;

[0032] Figure 5 This is an enlarged view of the structure of the mixing cylinder in the vitamin B12 wastewater treatment equipment proposed by the present invention;

[0033] Figure 6 This is a schematic diagram of the structure of the umbrella-shaped guide plate in the vitamin B12 wastewater treatment equipment proposed by the present invention;

[0034] Figure 7 This is an enlarged view of the structure of the feeding rotary frame in the vitamin B12 wastewater treatment equipment proposed by the present invention;

[0035] Figure 8 This is an enlarged view of the structure of the collecting barrel in the vitamin B12 wastewater treatment equipment proposed by the present invention.

[0036] In the figure: 1 tank body, 2 machine body, 3 protective cover, 4 feed hopper, 5 motor, 6 collecting barrel, 7 connecting pipe, 8 aeration main pipe, 9 feed pipe, 10 liquid outlet pipe, 11 mounting frame, 12 feed pipe, 13 guide plate, 14 filter plate, 15 small gear, 16 large gear, 17 feed rotating frame, 1701 ring pipe, 1702 branch pipe, 1703 vertical connecting pipe, 1704 feed main pipe, 18 sealing mounting seat, 19 reinforcement frame, 20 reaction barrel, 21 umbrella-shaped guide plate, 22 mud outlet pipe, 23 air inlet pipe, 24 mixing barrel, 25 pipe shaft, 26 sampling tube, 27 filter screen. DETAILED DESCRIPTION

[0037] The following examples are for illustrative purposes only and are not intended to limit the scope of the present invention.

[0038] Example

[0039] Reference Figure 1-8 A vitamin B12 wastewater treatment device includes a tank body 1 and a mounting frame 11, an organism 2 is installed on the mounting frame 11, the upper end of the organism 2 is connected to a feed pipe 12, and the lower end of the organism 2 is connected to a liquid outlet pipe 10, and a plurality of guide plates 13 are arranged at equal distances in the organism 2, and the angle between two adjacent guide plates 13 is an acute angle, one end of each guide plate 13 is fixedly connected to a filter plate 14, and the filter plate 14 is fixedly connected to the inner wall of the organism 2, and the filter plate 14 is arranged on the lower side of the guide plate 13.

[0040] A plurality of aeration branch pipes are inserted into the side wall of the machine body 2 , and each aeration branch pipe is located between two adjacent material guide plates 13 . The sides of the plurality of aeration branch pipes away from the machine body 2 are connected to the aeration main pipe 8 .

[0041] The discharge end of the tank body 1 is connected to the feed end of the machine body 2 through a connecting pipe 7. The outer wall of the tank body 1 is connected with a mud discharge pipe 22 and a sampling pipe 26, and the sampling pipe 26 is located above the mud discharge pipe 22. A mixing barrel 24 is installed on the inner bottom wall of the tank body 1, and the opening of the mixing barrel 24 is set at the upper end. The lower end of the tank body 1 is inserted with an air intake pipe 23 and a feed pipe 9, and the air intake pipe 23 and the feed pipe 9 both pass through the tank body 1 and extend into the mixing barrel 24. The air intake pipe 23 introduces gas into the tank body 1, which can play a role in stirring. The mixing and stirring effect promotes the full mixing of wastewater and treatment agents, improves the reaction efficiency, and the rising and stirring of the gas can make the wastewater and agents more evenly distributed in the tank body 1, thereby accelerating the reaction speed. An umbrella-shaped guide plate 21 is installed on the outer wall of the mixing barrel 24, and the lower end of the umbrella-shaped guide plate 21 is fixedly connected to the inner bottom wall of the tank body 1. A reinforcement frame 19 is installed on the outer wall of the umbrella-shaped guide plate 21, and one end of the reinforcement frame 19 away from the umbrella-shaped guide plate 21 is fixedly connected to the inner wall of the tank body 1.

[0042] A collecting barrel 6 is installed on the inner top wall of the tank body 1. One end of the collecting barrel 6 extends to the outside of the tank body 1 and is connected to the connecting pipe 7. The collecting barrel 6 includes a ring-shaped barrel and an extension barrel. The extension barrel is inserted into the side wall of the tank body 1. The ring-shaped barrel is fixedly connected to the inner top wall of the tank body 1. One end of the connecting pipe 7 is inserted into the bottom of the extension barrel. A liquid inlet hole is opened at the end of the ring-shaped barrel away from the extension barrel, and a filter screen 27 is installed on the liquid inlet hole.

[0043] A protective cover 3 is installed on the upper end surface of the tank body 1, and a feed hopper 4 and a motor 5 are installed on the protective cover 3. The output shaft of the motor 5 extends into the protective cover 3 and is installed with a gear reduction assembly. The gear reduction assembly includes a sealing mounting seat 18, and the sealing mounting seat 18 is installed on the tank body 1. A pipe shaft 25 is installed on the sealing mounting seat 18, and a large gear 16 is installed on the pipe shaft 25. The output shaft of the motor 5 extends into the protective cover 3 and is installed with a small gear 15, and the small gear 15 is engaged with the large gear 16.

[0044] The lower end of the feed hopper 4 is connected to the feed rotary frame 17, and the inner top wall of the tank body 1 is installed with a reaction cylinder 20. The mixing cylinder 24 and the feed rotary frame 17 are both located in the reaction cylinder 20, the feed rotary frame 17 is located in the tank body 1, and the mixing cylinder 24 is located in the feed rotary frame 17. The upper end of the feed rotary frame 17 is connected to the feed hopper 4 through the pipe axis 25. The feed rotary frame 17 includes multiple annular tubes 1701 arranged at equal distances, and each annular tube 1701 is symmetrically connected to several branch tubes 1702 on the outer wall. The multiple annular tubes 1701 are commonly connected to several vertical connecting tubes 1703, and the upper ends of the several vertical connecting tubes 1703 are commonly connected to the feed main pipe 1704. The feed main pipe 1704 is located in the pipe axis 25 and is connected to the feed hopper 4.

[0045] Polyaluminium chloride has a strong flocculation effect on impurities such as suspended matter and colloids in vitamin B12 wastewater, which can aggregate these tiny particles to form larger flocs, facilitating subsequent precipitation or filtration removal. The flocs formed by PAC are large in volume and fast in speed, which is conducive to increasing the sedimentation rate, thereby quickly and effectively reducing the turbidity of the wastewater.

[0046] The treatment agent is introduced from the feed hopper 4, and the wastewater enters the mixing drum 24 at the bottom of the tank body 1 from the feed pipe 9. At the same time, the motor 5 is started, and the large gear 16 is driven to rotate through the small gear 15. The large gear 16 is mounted on the pipe shaft 25. The pipe shaft 25 contains the feed main pipe 1704 of the feed rotary frame 17, thereby driving the feed rotary frame 17 to rotate. The feed rotary frame 17 is composed of multiple ring pipes 1701, branch pipes 1702 and vertical connecting pipes 1703. After the treatment agent enters the feed main pipe 1704 from the feed hopper 4, it is evenly distributed to each ring pipe 1701 and branch pipe 1702, and then dispersed into the tank body 1 for preliminary mixing with the wastewater. While the treatment agent is dispersed, the rotation of the feed rotary frame 17 and its special structural design can drive the flow of surrounding wastewater, promote the preliminary mixing of wastewater and treatment agent, and lay the foundation for further mixing in the mixing drum 24.

[0047] The wastewater and treatment agents entering the mixing barrel 24 are further mixed in the mixing barrel 24. An umbrella-shaped guide plate 21 is provided on the outside of the mixing barrel 24. On the one hand, it supports the mixing barrel 24 and is connected to the tank body 1 through a reinforcing frame 19 to enhance stability; on the other hand, it can guide the mixed materials to diffuse around, and the sediment in the tank body 1 can be discharged from the mud outlet pipe 22. When the wastewater in the tank body 1 needs to be tested, samples can be taken from the sampling tube 26. At the same time, a reaction barrel 20 is installed on the inner top wall of the tank body 1, and the mixing barrel 24 and the feed rotating frame 17 are placed in it, which helps to centrally treat wastewater and improve treatment efficiency. At the same time, it can also play a certain protective role in the treatment process.

[0048] The mixed material flows upward in the tank body 1, is filtered through the filter screen 27, and enters the collecting barrel 6 from the liquid inlet hole at one end of the ring-shaped barrel of the collecting barrel 6. The ring-shaped barrel and the extension barrel form the collecting barrel 6, and the extension barrel is connected to the connecting pipe 7 to transport the preliminarily treated wastewater to the machine body 2.

[0049] Wastewater enters the body 2 through the feed pipe 12. Several guide plates 13 are arranged at equal distances inside the body 2. The wastewater flows under the guidance of the guide plates 13, extending the flow path of the wastewater in the body 2. A filter plate 14 is fixedly connected to one end of each guide plate 13. During the flow, the wastewater is further filtered through the filter plate 14. Several aeration branch pipes are inserted on the side wall of the body 2. Each aeration branch pipe is located between two adjacent guide plates 13. Multiple aeration branch pipes are connected to the aeration main pipe 8. Aeration is introduced into the body 2 through the aeration branch pipes to promote biochemical reactions during the wastewater treatment process. The treated liquid is discharged from the liquid outlet pipe 10 at the lower end of the body 2.

[0050] A method for treating vitamin B12 wastewater comprises the following steps:

[0051] S1. Screen filtration: Coarse and fine screens are set to remove larger solid impurities in the wastewater, such as waste residue and fibers, to prevent these impurities from clogging and damaging subsequent treatment equipment;

[0052] S2. Wastewater regulation: Wastewater enters the regulating tank, where the water volume and quality are regulated to keep the wastewater flow and pollutant concentration relatively stable so that subsequent treatment processes can operate stably. The regulating tank can be equipped with a stirring device to prevent suspended matter from settling.

[0053] S3, chemical treatment; wastewater and treatment agent are respectively introduced into the feed pipe 9 and the feed hopper 4 into the tank body 1. The treatment agent can be selected from flocculants (such as polyaluminum chloride, etc.), oxidants (such as hydrogen peroxide, etc.) according to actual conditions;

[0054] S4, biological treatment; wastewater enters the body 2 through the connecting pipe 7, and flows under the guidance of the guide plate 13, extending the flow path of the wastewater in the body 2; a plurality of aeration branch pipes are inserted on the side wall of the body 2, each aeration branch pipe is located between two adjacent guide plates 13, and multiple aeration branch pipes are connected to the aeration main pipe 8. Aeration is introduced into the body through the aeration branch pipes to promote biochemical reactions during the wastewater treatment process;

[0055] S5, advanced treatment stage: After biological treatment, the wastewater can enter the filtration device again as needed, such as sand filter, activated carbon filter, etc., to further remove suspended solids and residual organic matter in the wastewater and improve the effluent quality;

[0056] S6. Disinfection: In order to ensure the hygienic safety of the effluent, the wastewater can be disinfected, such as by using ultraviolet disinfection, chlorine dioxide disinfection and other methods. The disinfected wastewater can be reused or discharged as needed.

[0057] The sediment in the tank 1 can be discharged from the mud outlet pipe 26 and enter the sludge thickening tank. The concentrated sludge enters the sludge dewatering equipment, such as a plate and frame filter press, a belt filter press, etc., to further reduce the water content of the sludge and turn it into a mud cake for easy transportation and disposal. The dehydrated mud cake can be incinerated, landfilled or recycled, such as making building materials, land improvement, etc.

[0058] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A vitamin B12 wastewater treatment device, comprising a tank body (1) and a machine body (2), wherein the discharge end of the tank body (1) is connected to the feed end of the machine body (2) via a connecting pipe (7), characterized in that: The outer wall of the tank body (1) is connected to a mud outlet pipe (22) and a sampling pipe (26); the inner bottom wall of the tank body (1) is provided with a mixing barrel (24); an air inlet pipe (23) and a feed pipe (9) are inserted into the lower end of the tank body (1); the air inlet pipe (23) and the feed pipe (9) both pass through the tank body (1) and extend into the mixing barrel (24); a collecting barrel (6) is installed on the inner top wall of the tank body (1); one end of the collecting barrel (6) extends to the outside of the tank body (1) and is connected to the connecting pipe (7); The upper end surface of the tank body (1) is provided with a protective cover (3), a feed hopper (4) and a motor (5) are provided on the protective cover (3), an output shaft of the motor (5) extends into the protective cover (3) and is provided with a gear reduction assembly, the lower end of the feed hopper (4) is connected to a feed rotating frame (17), the feed rotating frame (17) is located in the tank body (1), and a mixing barrel (24) is located in the feed rotating frame (17).

2. A vitamin B12 wastewater treatment equipment according to claim 1, characterized in that: An umbrella-shaped material guide plate (21) is installed on the outer wall of the mixing barrel (24), and the lower end of the umbrella-shaped material guide plate (21) is fixedly connected to the inner bottom wall of the tank body (1). A reinforcing frame (19) is installed on the outer wall of the umbrella-shaped material guide plate (21), and one end of the reinforcing frame (19) away from the umbrella-shaped material guide plate (21) is fixedly connected to the inner wall of the tank body (1).

3. A vitamin B12 wastewater treatment equipment according to claim 1, characterized in that: The gear reduction assembly comprises a sealing mounting seat (18), and the sealing mounting seat (18) is mounted on the tank body (1), a tube shaft (25) is mounted on the sealing mounting seat (18), and the upper end of the feeding rotating frame (17) passes through the tube shaft (25) and is connected to the feeding hopper (4), a large gear (16) is mounted on the tube shaft (25), and the output shaft of the motor (5) extends into the protective cover (3) and is mounted with a small gear (15), and the small gear (15) is meshed with the large gear (16).

4. A vitamin B12 wastewater treatment equipment according to claim 3, characterized in that: The feeding rotating frame (17) includes a plurality of annular tubes (1701) arranged at equal distances, and the outer wall of each annular tube (1701) is symmetrically connected to a plurality of branch tubes (1702), and the plurality of annular tubes (1701) are commonly connected to a plurality of vertical connecting tubes (1703), and the upper ends of the plurality of vertical connecting tubes (1703) are commonly connected to a feeding main tube (1704), and the feeding main tube (1704) is located inside the tube axis (25) and is connected to the feeding hopper (4).

5. A vitamin B12 wastewater treatment equipment according to claim 1, characterized in that: The collecting cylinder (6) comprises a ring-shaped cylinder and an extension cylinder, and the extension cylinder is inserted into the side wall of the tank body (1), and the ring-shaped cylinder is fixedly connected to the inner top wall of the tank body (1), and one end of the connecting tube (7) is inserted into the bottom of the extension cylinder, and the end of the ring-shaped cylinder away from the extension cylinder is provided with a liquid inlet hole, and a filter screen (27) is installed on the liquid inlet hole.

6. A vitamin B12 wastewater treatment equipment according to claim 1, characterized in that: The upper end of the machine body (2) is connected to a feed pipe (12), and the lower end of the machine body (2) is connected to a liquid outlet pipe (10). A plurality of guide plates (13) are arranged at equal distances inside the machine body (2), and one end of each guide plate (13) is fixedly connected to a filter plate (14), and the filter plate (14) is fixedly connected to the inner wall of the machine body (2).

7. A vitamin B12 wastewater treatment equipment according to claim 6, characterized in that: A plurality of aeration branch pipes are inserted into the side wall of the machine body (2), and each aeration branch pipe is located between two adjacent material guide plates (13). The sides of the plurality of aeration branch pipes away from the machine body (2) are connected to an aeration main pipe (8).

8. A vitamin B12 wastewater treatment equipment according to claim 1, characterized in that: A reaction cylinder (20) is installed on the inner top wall of the tank body (1), and a mixing cylinder (24) and a material feeding rotating frame (17) are both located inside the reaction cylinder (20).

9. A method for treating vitamin B12 wastewater, comprising using the vitamin B12 wastewater treatment equipment described in any one of 1-8, characterized in that: The following steps are involved: S1. Screen filtration: Coarse and fine screens are set to remove larger solid impurities in the wastewater to prevent these impurities from clogging and damaging subsequent treatment equipment; S2. Wastewater regulation: The wastewater enters the regulating tank to regulate the water volume and quality, so that the wastewater flow and pollutant concentration are relatively stable, so that the subsequent treatment process can run stably. The regulating tank can be equipped with a stirring device to prevent the precipitation of suspended matter; S3, chemical treatment; wastewater and treatment reagents are respectively introduced into the feed pipe (9) and the feed hopper (4) and enter the tank body (1); S4, biological treatment; wastewater enters the machine body (2) through the connecting pipe (7), and the wastewater flows under the guidance of the guide plate (13), thereby extending the flow path of the wastewater in the machine body (2); a plurality of aeration branch pipes are inserted into the side wall of the machine body (2), each aeration branch pipe is located between two adjacent guide plates (13), and the plurality of aeration branch pipes are connected to the aeration main pipe (8), and aeration is carried out into the machine body (2) through the aeration branch pipes, thereby promoting the biochemical reaction in the wastewater treatment process; S5, advanced treatment stage: after biological treatment, the wastewater enters the filtration device again to further remove suspended solids and residual organic matter in the wastewater and improve the effluent quality; S6. Disinfection: Disinfect wastewater to ensure the hygiene and safety of the effluent. The disinfected wastewater can be reused or discharged as needed.

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