Multi-stage and multi-section AO biological phosphorus and nitrogen removal sewage treatment equipment

Abstract

The utility model discloses multi-stage and multi-section AO biological phosphorus and nitrogen removal sewage treatment equipment which comprises a main body, an anoxic tank is arranged in the main body, an anaerobic tank is arranged on one side of the anoxic tank, an aerobic tank is arranged on the other side of the anoxic tank, a water outlet pipe is arranged on one side of the aerobic tank, and the multi-stage and multi-section AO biological phosphorus and nitrogen removal sewage treatment equipment further comprises a primary filter cavity, the primary filtering cavity is formed in one side of the anaerobic tank, the front side and the rear side of the interior of the primary filtering cavity are each provided with a set of clamping bases, each set of clamping bases is provided with three clamping bases which are distributed at equal intervals, three filtering plates which are distributed at equal intervals are arranged in the primary filtering cavity, and the filtering plates are in sliding fit with the clamping bases. The multi-stage and multi-section AO biological phosphorus and nitrogen removal sewage treatment equipment can effectively intercept large-particle solid impurities such as silt and suspended solids in sewage, can promote decomposition of sludge particles and degradation of organic matters, can prevent insufficient oxygen concentration in the anoxic zone and the anaerobic zone, avoids out-of-control of the degradation process, and improves the sewage treatment efficiency. Therefore, the reaction efficiency and effect are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of sewage treatment, in particular to a multi-stage and multi-section AO biological phosphorus and nitrogen removal sewage treatment device. Background Technique

[0002] Sewage treatment refers to the process of treating water containing pollutants through a series of physical, chemical, and biological treatment processes to make it meet certain water quality standards so that it can be safely discharged or reused. With the acceleration of the industrialization process, the problem of water pollution has become increasingly serious. Sewage treatment has become a key link in protecting the water environment and realizing the sustainable utilization of water resources. Phosphorus and nitrogen are limiting nutrients for the growth of aquatic plants. Excessive discharge will lead to eutrophication of water bodies, cause excessive growth of algae, and damage the water ecological balance. Through the AO biological phosphorus and nitrogen removal sewage treatment device, sewage can be treated, the water quality can be improved, and water resources can be used more safely for agricultural irrigation, industrial water use, etc., and the utilization value of water resources can be enhanced.

[0003] A Chinese patent with the publication number CN218810844U discloses an AO integrated sewage treatment device, including a container body. The container body includes: an anaerobic tank, an anoxic tank, an aerobic tank, a sedimentation tank, a disinfection tank, and a machine room arranged in sequence from left to right inside the container body. The anaerobic tank, anoxic tank, aerobic tank, sedimentation tank, disinfection tank, and machine room are separated by partitions so that the anaerobic tank, anoxic tank, aerobic tank, sedimentation tank, and disinfection tank are all independent treatment units. The machine room is a sound insulation and noise reduction structure, and an exhaust system, a control system, an aeration fan, and an electrical system are integrally installed inside the machine room.

[0004] Although the above solution can carry out phosphorus and nitrogen removal treatment on sewage, the device lacks a step of preliminary filtration of sewage, which results in larger impurities being easily directly introduced into the subsequent treatment process, thereby possibly affecting the overall treatment effect. At the same time, in the anaerobic tank and anoxic tank, the reaction efficiency between microorganisms and sewage is low, and the microorganisms lack sufficient stirring and mixing, resulting in insufficient contact between microorganisms and sewage, thus limiting the efficiency and effect of the biological reaction. Therefore, it does not meet the existing requirements. For this reason, we propose a multi-stage and multi-section AO biological phosphorus and nitrogen removal sewage treatment device. Content of the Utility Model

[0005] The purpose of the utility model is to provide a multi-stage and multi-section AO biological phosphorus and nitrogen removal sewage treatment device to solve the problems that the sewage treatment device lacks preliminary filtration, resulting in larger impurities being easily directly introduced into the subsequent treatment process, and the insufficient contact between microorganisms and sewage affects the reaction efficiency and effect as mentioned in the above background technique.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a multi-stage multi-section AO biological phosphorus removal and nitrogen removal sewage treatment equipment, comprising a main body, an anoxic tank is provided inside the main body, an anaerobic tank is provided on one side of the anoxic tank, an aerobic tank is provided on the other side of the anoxic tank, and a water outlet pipe is provided on one side of the aerobic tank;

[0007] It also includes a primary filter chamber, which is opened on one side of the anaerobic tank, a group of card seats are arranged on the front and rear sides of the primary filter chamber, and each group of card seats is evenly distributed and arranged with three, three filter plates are evenly distributed inside the primary filter chamber, and the filter plates are slidably matched with the card seats, and a water inlet pipe is arranged on one side of the primary filter chamber;

[0008] It also includes a transmission cavity, which is opened at the upper end of the main body, and stirring rods are rotatably arranged on both sides of the transmission cavity, one end of each stirring rod penetrates and extends to the outside of the transmission cavity, and the outer wall of the stirring rod at one end outside the transmission cavity is welded with three groups of stirring blades distributed at equal distances, and each group of stirring blades is welded with four stirring blades distributed at equal distances in a ring shape;

[0009] The device also includes a dissolved oxygen concentration sensor, which is arranged on the lower side of one side inside the anoxic tank.

[0010] Preferably, a motor is provided on one side of the upper end of the transmission cavity, and an output end of the motor is connected to one of the stirring rods via a coupling.

[0011] Preferably, the stirring rod is located at one end inside the transmission cavity and is connected via a transmission belt.

[0012] Preferably, first water pumps are provided on both sides of the anaerobic tank, and first connecting pipes are provided at the upper and lower ends of the first water pump.

[0013] Preferably, a PLC controller is provided at the front end of the main body, and an input end of the PLC controller is electrically connected to an output end of the dissolved oxygen concentration sensor.

[0014] Preferably, a second water pump is provided between the anoxic pool and the aerobic pool, and second connecting pipes are provided at the upper and lower ends of the second water pump, and electric-controlled valves are provided on both sides of one of the second connecting pipes, and the input ends of the electric-controlled valves are electrically connected to the output ends of the PLC controller.

[0015] Preferably, a first flap is disposed above the primary filtration chamber, and a second flap is disposed above both the anaerobic tank and the anoxic tank, and both the first flap and the second flap are rotatably connected to the main body.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] 1. The utility model has a primary filtration chamber opened on one side inside the main body. When sewage is introduced through the water inlet pipe, the sewage will initially pass through three filter plates. The filter plates are made of corrosion-resistant and wear-resistant polypropylene material, with excellent chemical stability and good filtration performance, ensuring that large particle solid impurities in the sewage, such as sediment and suspended matter, can be effectively intercepted during the filtration process. At the same time, the operator can open the primary filtration chamber through the first flip cover, and the filter plate can be taken out of the primary filtration chamber by moving it upward, which is convenient for replacement or cleaning, ensuring long-term filtration effect, and the replacement operation is simple and convenient, facilitating daily use.

[0018] 2. The utility model has a transmission chamber opened at the upper end inside the main body. When the sewage enters the anaerobic tank and the anoxic tank, the motor can be started. The motor drives one of the stirring rods to rotate, and under the drive of the transmission belt, the other stirring rod can also rotate synchronously, realizing the rotation of the two stirring rods driving the stirring blades. Stirring can make the sludge particles re-suspend, increasing the contact area of microbial particles, thereby promoting the decomposition of sludge particles and the degradation of organic matter. Stirring can also prevent the oxygen concentration in the anoxic area and the anaerobic area from being insufficient, avoiding the out-of-control of the degradation process, and thus improving the efficiency and effect of the reaction.

[0019] 3. The utility model has a dissolved oxygen concentration sensor arranged inside the anoxic tank. The dissolved oxygen concentration sensor can detect the oxygen concentration in the anoxic tank in real time, and at the same time can transmit the detected data to the PLC controller. The operator can preset the standard value in advance. When the oxygen concentration is too high, the PLC controller will open one of the electric control valves to make the sewage flow back, and when it meets the standard value, the PLC controller will close the electric control valve at the return flow and open the electric control valve for the sewage to enter the aerobic tank for the next step of treatment, greatly reducing the need for manual intervention, reducing the operation difficulty and labor cost. Brief Description of the Drawings

[0020] Figure 1 is a three-dimensional structural schematic diagram of the utility model;

[0021] Figure 2 is a top view schematic diagram of the overall structure of the utility model;

[0022] Figure 3 is a front view schematic diagram of the internal structure of the utility model;

[0023] Figure 4 is a top view schematic diagram of the internal structure of the transmission chamber of the utility model.

[0024] In the figure: 1. Main body; 2. PLC controller; 3. Primary filtration chamber; 4. Anaerobic tank; 5. Anoxic tank; 6. Aerobic tank; 7. Inlet pipe; 8. Clamping seat; 9. Filter plate; 10. First flip cover; 11. Transmission chamber; 12. Motor; 13. Transmission belt; 14. Stirring rod; 15. Stirring blade; 16. First water pump; 17. First connecting pipe; 18. Second water pump; 19. Second connecting pipe; 20. Dissolved oxygen concentration sensor; 21. Electric control valve; 22. Outlet pipe; 23. Second flip cover. Specific implementation mode

[0025] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0026] Please refer to Figures 1-4 , the present invention provides a technical solution: a multi-stage and multi-section AO biological phosphorus and nitrogen removal sewage treatment device, including a main body 1. An anoxic tank 5 is opened inside the main body 1. An anaerobic tank 4 is opened on one side of the anoxic tank 5. An aerobic tank 6 is opened on the other side of the anoxic tank 5. An outlet pipe 22 is arranged on one side of the aerobic tank 6;

[0027] It also includes a primary filtration chamber 3, which is opened on one side of the anaerobic tank 4. A group of clamping seats 8 are arranged on the front and rear sides inside the primary filtration chamber 3, and three clamping seats 8 are arranged at equal intervals in each group. Three equally spaced filter plates 9 are arranged inside the primary filtration chamber 3, and the filter plates 9 are all slidably matched with the clamping seats 8. An inlet pipe 7 is arranged on one side of the primary filtration chamber 3;

[0028] It also includes a transmission chamber 11, which is opened at the upper end inside the main body 1. Stirring rods 14 are rotatably arranged on both sides inside the transmission chamber 11. One end of each stirring rod 14 penetrates and extends outside the transmission chamber 11. Three groups of equally spaced stirring blades 15 are welded on the outer wall of one end of the stirring rod 14 outside the transmission chamber 11, and four stirring blades 15 are welded at equal intervals in a ring in each group;

[0029] It also includes a dissolved oxygen concentration sensor 20, which is arranged on the lower side of one side inside the anoxic tank 5.

[0030] When in use, sewage enters the primary filter chamber 3 through the water inlet pipe 7, and after impurities are filtered out by the filter plate 9, it is sent to the anaerobic tank 4 by the first water pump 16. The filter plate 9 can be pulled out through the first flip cover 10 for replacement or cleaning. In the anoxic tank 5, the motor 12 drives the stirring rod 14 and the stirring blade 15 to rotate synchronously to promote the decomposition of sludge particles and the degradation of organic matter. The dissolved oxygen concentration sensor 20 monitors the oxygen concentration in the anoxic tank 5 in real time, and controls the electric control valve 21 through the PLC controller 2 to realize the automatic flow of sewage between the anoxic tank 5 and the aerobic tank 6. Finally, the treated water is discharged through the outlet pipe 22, which reduces manual intervention and reduces the difficulty and cost of operation.

[0031] See also Figure 3 A motor 12 is disposed on one side of the upper end of the transmission chamber 11, and the output end of the motor 12 is connected to one of the stirring rods 14 through a coupling. The motor 12 can directly drive the stirring rod 14 to rotate, thereby ensuring direct transmission of power and improving stirring efficiency and stability.

[0032] See also Figure 3 and Figure 4 The stirring rod 14 is located at one end of the transmission chamber 11 and is connected by a transmission belt 13. The transmission belt 13 can ensure the synchronous rotation of the two stirring rods 14, thereby achieving a uniform stirring effect in the entire anoxic tank 5, thereby enhancing the decomposition of sludge particles and the degradation of organic matter;

[0033] See also Figure 3 , first water pumps 16 are provided on both sides of the anaerobic tank 4, and first connecting pipes 17 are provided at the upper and lower ends of the first water pumps 16. Through the two first water pumps 16 and the first connecting pipes 17, the sewage in the primary filter chamber 3 and the sewage in the anaerobic tank 4 can be conveniently transported to the next treatment stage, thereby improving the treatment efficiency and flexibility;

[0034] See also Figure 1 and Figure 2 The front end of the main body 1 is provided with a PLC controller 2, and the input end of the PLC controller 2 is electrically connected to the output end of the dissolved oxygen concentration sensor 20. The PLC controller 2 can receive the detection data of the dissolved oxygen concentration sensor 20 in real time, and automatically control according to the preset standard value, thereby realizing accurate monitoring and adjustment of the oxygen concentration in the anoxic tank 5;

[0035] See also Figure 3, a second water pump 18 is arranged between the anoxic tank 5 and the aerobic tank 6. Second connecting pipes 19 are arranged at the upper and lower ends of the second water pump 18. Electric control valves 21 are arranged on both sides of one of the second connecting pipes 19. The input ends of the electric control valves 21 are electrically connected to the output end of the PLC controller 2. The sewage flow between the anoxic tank 5 and the aerobic tank 6 can be realized through the second water pump 18 and the second connecting pipes 19. The automatic control of the electric control valves 21 ensures that the sewage flows at an appropriate time, improving the automation level and operation efficiency of the entire sewage treatment system;

[0036] Please refer to Figure 1 , Figure 2 and Figure 3 , a first flip cover 10 is arranged above the primary filtration chamber 3. Second flip covers 23 are arranged above both the anaerobic tank 4 and the anoxic tank 5. The first flip cover 10 and the second flip covers 23 are both rotatably connected to the main body 1. The opening of the first flip cover 10 and the second flip covers 23 can facilitate the maintenance and cleaning of the interiors of the primary filtration chamber 3, the anaerobic tank 4, and the anoxic tank 5, improving the usability and maintenance efficiency of the equipment.

[0037] Working principle: When in use, sewage is first introduced into the interior of the primary filtration chamber 3 through the water inlet pipe 7. Starting one of the first water pumps 16 can cause the sewage in the primary filtration chamber 3 to enter the interior of the anaerobic tank 4. When the sewage flows in the primary filtration chamber 3, it will sequentially pass through three filter plates 9. The filter plates 9 can intercept impurities in the sludge to avoid affecting subsequent treatment. At the same time, the operator can open the first flip cover 10 and move the filter plate 9 from bottom to top, so that the filter plate 9 can be withdrawn from the interior of the card seat 8, thereby enabling the replacement or cleaning of the filter plate 9, achieving a long-term filtration effect. Starting the other first water pump 16 can cause the sewage in the anaerobic tank 4 to enter the interior of the anoxic tank 5. Starting the motor 12, the motor 12 will drive one of the stirring rods 14 to rotate through the coupling, and under the drive of the transmission belt 13, the other stirring rod 14 can rotate synchronously, thus realizing the synchronous rotation of the two stirring rods 14. Both of the two stirring rods 14 will drive the stirring blades 15 to rotate, promoting the decomposition of sludge particles and the degradation of organic matter. Stirring can also prevent insufficient oxygen concentration in the anoxic zone and anaerobic zone, avoiding the out-of-control of the degradation process, thereby improving the efficiency and effect of the reaction. The dissolved oxygen concentration sensor 20 can detect the oxygen concentration in the anoxic tank 5 in real time and send the detected data to the interior of the PLC controller 2. The operator can preset the standard value in advance. When the oxygen concentration is too high, the PLC controller 2 will start the electric control valve 21 at the reflux and close the electric control valve 21 leading to the aerobic tank 6. Under the extraction of the second water pump 18, the sewage in the anoxic tank 5 will flow back to the interior of the anoxic tank 5. When it meets the standard value, the PLC controller 2 will close the electric control valve 21 at the reflux and open the electric control valve 21 leading to the aerobic tank 6, enabling the sewage to enter the interior of the aerobic tank 6 for treatment, thus greatly reducing the need for manual intervention, reducing the operation difficulty and labor cost.

[0038] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above-described exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, in any aspect, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present utility model. Any reference signs in the claims should not be regarded as limiting the claims involved.

Claims

1. A multi-stage multi-section AO biological phosphorus removal and nitrogen removal sewage treatment equipment, comprising a main body (1), an anoxic tank (5) is provided inside the main body (1), an anaerobic tank (4) is provided on one side of the anoxic tank (5), an aerobic tank (6) is provided on the other side of the anoxic tank (5), and a water outlet pipe (22) is provided on one side of the aerobic tank (6), characterized in that: It also comprises a primary filter chamber (3) which is opened on one side of the anaerobic tank (4); a group of card seats (8) are arranged on the front and rear sides of the primary filter chamber (3); each group of card seats (8) has three card seats arranged at equal intervals; three filter plates (9) are arranged at equal intervals inside the primary filter chamber (3); the filter plates (9) are slidably matched with the card seats (8); and a water inlet pipe (7) is arranged on one side of the primary filter chamber (3); It also comprises a transmission cavity (11) which is opened at the upper end of the main body (1), stirring rods (14) are rotatably arranged on both sides of the transmission cavity (11), one end of each stirring rod (14) penetrates and extends to the outside of the transmission cavity (11), and three groups of stirring blades (15) are welded to the outer wall of one end of the stirring rod (14) located outside the transmission cavity (11), and each group of stirring blades (15) is welded with four stirring blades (15) distributed in an annular shape and equidistantly arranged; It also includes a dissolved oxygen concentration sensor (20), which is arranged on the lower side of one side inside the anoxic tank (5).

2. The multi-stage and multi-section AO biological phosphorus and nitrogen removal sewage treatment equipment according to claim 1 is characterized in that: A motor (12) is provided on one side of the upper end of the transmission chamber (11), and an output end of the motor (12) is connected to one of the stirring rods (14) via a coupling.

3. A multi-stage multi-stage AO biological phosphorus removal and nitrogen removal sewage treatment equipment according to claim 2, characterized in that: The stirring rod (14) is connected to one end of the transmission chamber (11) by a transmission belt (13).

4. The multi-stage and multi-section AO biological phosphorus and nitrogen removal sewage treatment equipment according to claim 1 is characterized in that: A first water pump (16) is provided on both sides of the anaerobic tank (4), and a first connecting pipe (17) is provided at the upper and lower ends of the first water pump (16).

5. The multi-stage and multi-section AO biological phosphorus and nitrogen removal sewage treatment equipment according to claim 1 is characterized in that: A PLC controller (2) is provided at the front end of the main body (1), and an input end of the PLC controller (2) is electrically connected to an output end of a dissolved oxygen concentration sensor (20).

6. The multi-stage and multi-section AO biological phosphorus and nitrogen removal sewage treatment equipment according to claim 5 is characterized in that: A second water pump (18) is provided between the anoxic pool (5) and the aerobic pool (6), and second connecting pipes (19) are provided at the upper and lower ends of the second water pump (18), and electric control valves (21) are provided on both sides of one of the second connecting pipes (19), and the input ends of the electric control valves (21) are both electrically connected to the output ends of the PLC controller (2).

7. The multi-stage and multi-section AO biological phosphorus and nitrogen removal sewage treatment equipment according to claim 1 is characterized in that: A first flip cover (10) is arranged above the primary filter chamber (3), and a second flip cover (23) is arranged above the anaerobic tank (4) and the anoxic tank (5), and the first flip cover (10) and the second flip cover (23) are both rotatably connected to the main body (1).

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