Continuous aeration biological fluidized bed for sewage treatment

Abstract

The utility model discloses a sewage treatment continuous aeration biological fluidized bed, which comprises a tank body, a communicating pipe is fixedly sleeved in one side of the tank body, the top of the communicating pipe is communicated with a gas guide pipe, the other end of the gas guide pipe is communicated with a corrugated pipe, a one-way valve is arranged in the gas guide pipe, and the corrugated pipe is communicated with the other end of the communicating pipe. A valve is arranged in the communicating pipe, one end of the communicating pipe is communicated with a central pipe, and the outer side of the fine filter screen is movably sleeved with a sealing edge; through the arrangement of a straight cylinder and a supporting ring, the supporting ring provides support for the straight cylinder so that the straight cylinder can stand in the middle of a filling layer conveniently, a waterproof servo motor can conduct spiral conveying and guide water flow, the stirring capacity can be improved conveniently, the mixing capacity in the water flow can be improved, and the oxygen mixing capacity can be indirectly improved; and meanwhile, the straight barrels are independent and can be arranged and distributed according to actual requirements, so that the adaptability and the practicability are further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of sewage treatment, in particular to a continuous aerated biological fluidized bed for sewage treatment. Background Art

[0002] Sewage treatment: the process of purifying sewage to meet the water quality requirements for discharge into a water body or reuse. Sewage treatment is widely used in various fields such as construction, agriculture, transportation, energy, petrochemicals, environmental protection, urban landscape, medical care, and catering. It is also increasingly entering the daily lives of ordinary people. The role of sewage treatment stations is to treat production and domestic sewage to meet the prescribed discharge standards. It is an important facility for protecting the environment. The biological fluidized bed is filled with smaller inert particles such as sand, activated carbon, and coke as carriers. The surface of the carrier is covered with a biofilm. The sewage flows from bottom to top at a certain flow rate, so that the carrier particles are in a fluidized state.

[0003] Fluidized beds are usually required in the sewage treatment process. Biological fluidized beds can save secondary sedimentation. However, the existing fluidized beds are inconvenient to introduce oxygen, and the mixing is not sufficient. In addition, the function of changing the flow direction according to the operation requirements cannot be perfectly realized, which causes inconvenience in use. We propose a continuous aerated biological fluidized bed for sewage treatment. Utility Model Content

[0004] The purpose of the utility model is to provide a continuous aerated biological fluidized bed for sewage treatment to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a continuous aerated biological fluidized bed for sewage treatment, comprising a tank body, a connecting pipe is fixedly sleeved inside one side of the tank body, the top of the connecting pipe is connected to an air guide pipe, the other end of the air guide pipe is connected to a corrugated pipe, a one-way valve is arranged inside the air guide pipe, a valve is arranged inside the connecting pipe, one end of the connecting pipe is connected to a central pipe, both sides of the central pipe are connected to a plurality of side pipes, the side pipe and the other end of the central pipe are connected to a circulation pipe, and the circulation pipe, the central pipe and the side pipe are all provided with A plurality of connecting holes, a supporting frame is fixedly installed inside the pool body, a fine filter is movably installed on the top of the supporting frame, a sealing edge is movably sleeved on the outer side of the fine filter, a plurality of straight cylinders are movably placed on the top of the fine filter, a waterproof servo motor is arranged on the top of the straight cylinder, a rotating shaft is transmission-connected to the output end of the waterproof servo motor, a threaded plate is fixedly installed on the outer side of the rotating shaft, a sand and gravel layer is arranged inside the pool body, a coke layer is arranged at the bottom of the sand and gravel layer, an activated carbon layer is arranged at the bottom of the coke layer, and a support ring is fixedly installed on the outer side of the bottom end of the straight cylinder.

[0006] Preferably, the circulation pipe, central pipe and side pipes are all fixedly installed inside the pool body, the circulation pipe is located outside the central pipe and side pipes, and the side pipes are linearly symmetrically evenly distributed on opposite sides of the circulation pipe and the central pipe.

[0007] Preferably, the connecting holes are evenly distributed in a semicircular linear manner inside the circulation pipe, the central pipe and the side pipe, the connecting holes are distributed within 160° of a circumferential angle, and the connecting holes are located inside the lower half of the circulation pipe, the central pipe and the side pipe.

[0008] Preferably, the outer side of the sealing edge is in contact with the inner wall of the pool body.

[0009] Preferably, the waterproof servo motor is fixedly installed inside the top of the straight cylinder through a bracket, a spiral rubber strip is provided on the outside of the threaded plate, the outside of the threaded plate fits with the inner wall of the straight cylinder, and the straight cylinder is linearly symmetrical and evenly distributed on the top of the fine filter.

[0010] Preferably, the bottom of the support ring fits with the top of the fine filter screen, and the straight cylinder movably penetrates the sand and gravel layer, the coke layer and the activated carbon layer and is connected at both ends to the top of the fine filter screen and the sand and gravel layer.

[0011] Compared with the prior art, the beneficial effect of the utility model is as follows: when the equipment is in use, the sewage to be treated is placed at the bottom of the sand and gravel layer, and the biofilm is set on each layer, and then the water flow gradually fills the pool body under the action of gravity, at this time the waterproof servo motor starts to rotate to drive the rotating shaft to rotate, the rotating shaft drives the threaded plate to rotate, the bottom of the pool body is filled with water, and it is pumped to the top of the sand and gravel layer through a fine filter screen for preliminary circulation. The treatment is placed as a top-down biological fluidization treatment. When oxygen needs to be introduced, the bellows needs to be connected to the oxygen output, and the airflow is connected to the connecting pipe through the air guide pipe, and enters the connecting pipe and the central pipe through the one-way valve. The inside of the tank body is guided by the circulation pipe, the central pipe and the side pipe through the connecting holes to the bottom of the tank body, and is evenly introduced into the inside of the tank body, which improves the efficiency of oxygen introduction. After the end, the valve can be opened to guide the water flow out, which is convenient for increasing the efficiency of the closed treatment of the biochemical fluidized bed. When the direction needs to be changed, it is only necessary to connect the connecting pipe to the pre-treated sewage conveying pipe. After the water surface is above the straight cylinder, the rotation direction of the waterproof servo motor is reversed, and the laying direction of the gravel layer, the coke layer and the activated carbon layer is reversed. This solution can adapt to the flow-through biochemical treatment, and can be adjusted according to actual needs, thereby improving the overall efficiency and adaptability.

[0012] By setting the straight cylinder and support ring, the support ring provides support for the straight cylinder to stand in the middle of the filling layer, and the waterproof servo motor can perform spiral transmission to guide the water flow, which is convenient for increasing the stirring capacity, and can increase the mixing capacity inside the water flow, indirectly increasing the oxygen mixing capacity, and at the same time, because the straight cylinders are independent, they can be arranged and distributed according to actual needs, further increasing adaptability and practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the front three-dimensional appearance structure of the utility model.

[0014] Figure 2 It is a schematic diagram of the internal structure of the utility model viewed from above and partially cut away.

[0015] Figure 3 It is a front sectional structural schematic diagram of the utility model.

[0016] Figure 4 For this utility model Figure 3 Enlarged structural diagram at A in the middle.

[0017] In the figure: 1. pool body; 2. connecting pipe; 3. air guide pipe; 4. bellows; 5. valve; 6. sand and gravel layer; 7. straight cylinder; 8. waterproof servo motor; 9. circulation pipe; 10. center pipe; 11. side pipe; 12. connecting hole; 13. fine filter screen; 14. support frame; 15. coke layer; 16. activated carbon layer; 17. rotating shaft; 18. threaded plate; 19. sealing edge; 20. support ring; 21. one-way valve. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] See also Figure 1-Figure 4The utility model provides a technical solution: a continuous aerated biological fluidized bed for sewage treatment, comprising a tank body 1, a connecting pipe 2 is fixedly sleeved inside one side of the tank body 1, the top of the connecting pipe 2 is connected with an air guide pipe 3, the other end of the air guide pipe 3 is connected with a bellows 4, a one-way valve 21 is arranged inside the air guide pipe 3, a valve 5 is arranged inside the connecting pipe 2, one end of the connecting pipe 2 is connected with a central pipe 10, both sides of the central pipe 10 are connected with a plurality of side pipes 11, the side pipe 11 and the other end of the central pipe 10 are connected with a circulation pipe 9, and a plurality of communication holes are opened inside the circulation pipe 9, the central pipe 10 and the side pipe 11 12. A support frame 14 is fixedly installed inside the pool body 1, a fine filter screen 13 is movably installed on the top of the support frame 14, a sealing edge 19 is movably sleeved on the outer side of the fine filter screen 13, a plurality of straight cylinders 7 are movably placed on the top of the fine filter screen 13, a waterproof servo motor 8 is arranged on the top of the straight cylinder 7, a rotating shaft 17 is transmission-connected to the output end of the waterproof servo motor 8, a threaded plate 18 is fixedly installed on the outer side of the rotating shaft 17, a gravel layer 6 is arranged inside the pool body 1, a coke layer 15 is arranged at the bottom of the gravel layer 6, an activated carbon layer 16 is arranged at the bottom of the coke layer 15, and a support ring 20 is fixedly installed on the outer side of the bottom end of the straight cylinder 7.

[0020] The working principle of the above technical solution is as follows: when in use, the sewage to be treated is placed at the bottom of the gravel layer 6, and the biofilm is set on each layer, and then the water flow gradually fills the pool body 1 under the action of gravity. At this time, the waterproof servo motor 8 starts to rotate and drives the rotating shaft 17 to rotate, and the rotating shaft 17 drives the threaded plate 18 to rotate, and the bottom of the pool body 1 is filled with water, which is pumped to the top of the gravel layer 6 through the fine filter 13 for preliminary circulation. The treatment is placed as a top-down biological fluidization treatment. When oxygen needs to be introduced, the bellows 4 needs to be connected to the oxygen output, and the airflow is connected to the connecting pipe 2 through the air guide pipe 3, and enters the connecting pipe 2 and the interior of the central pipe 10 through the one-way valve 21. The water is guided through the circulation pipe 9, the central pipe 10 and the side pipe 11 through the connecting hole 12 to the bottom of the pool body 1 and evenly introduced into the interior of the pool body 1, thereby improving the efficiency of oxygen introduction. After completion, the valve 5 can be opened to discharge the water flow, thereby increasing the efficiency of the closed treatment of the biochemical fluidized bed. When the direction needs to be changed, it is only necessary to connect the connecting pipe 2 to the pretreated sewage delivery pipe. After the water surface submerges the straight cylinder 7, the rotation direction of the waterproof servo motor 8 is reversed, and the laying direction of the gravel layer 6, the coke layer 15 and the activated carbon layer 16 is reversed. This scheme can adapt to the flow-through biochemical treatment, and can adjust the operation according to actual needs, thereby improving the overall efficiency and adaptability.

[0021] In another embodiment, Figure 1-Figure 4As shown, the circulation pipe 9, the central pipe 10 and the side pipes 11 are all fixedly installed inside the pool body 1, the circulation pipe 9 is located outside the central pipe 10 and the side pipes 11, and the side pipes 11 are linearly symmetrically evenly distributed on the opposite sides of the circulation pipe 9 and the central pipe 10.

[0022] The circulation pipe 9, the central pipe 10 and the side pipe 11 increase the ability to balance the backflow of air and water, stabilize the distribution of air and water, increase stability, avoid poor flow diversion and increase mixing stability.

[0023] In another embodiment, Figure 2 As shown, the connecting holes 12 are evenly distributed in a semicircular linear pattern inside the circulation pipe 9 , the central pipe 10 and the side pipe 11 . The connecting holes 12 are distributed within a 160° circular angle. The connecting holes 12 are located inside the lower half of the circulation pipe 9 , the central pipe 10 and the side pipe 11 .

[0024] The connecting holes 12 are opened in the lower part of the circulation pipe 9, the central pipe 10 and the side pipe 11, and are linearly arranged inside the circulation pipe 9, the central pipe 10 and the side pipe 11 after being semi-circularly distributed in the lower part, so as to facilitate the balancing position and the diversion position, facilitate uniform diversion, indirectly improve the mixing efficiency and the diversion efficiency, avoid poor diversion, and increase stability.

[0025] In another embodiment, Figure 1-Figure 4 As shown, the outer side of the sealing edge 19 is in contact with the inner wall of the tank body 1 .

[0026] The sealing edge 19 seals the top and bottom of the fine filter mesh 13 to prevent the sand and gravel layer 6 from falling. The fine filter mesh 13 provides support for the activated carbon layer 16 and the top structure, and stratifies the water flow, providing stable support and working points for the interior. A support frame can also be fixed at the bottom of the fine filter mesh 13 to provide a support point for the larger pool body 1 to prevent deformation of the fine filter mesh 13.

[0027] In another embodiment, Figure 1-Figure 4 As shown, the waterproof servo motor 8 is fixedly installed inside the top of the straight tube 7 through a bracket, a spiral rubber strip is provided on the outside of the threaded plate 18, the outside of the threaded plate 18 fits with the inner wall of the straight tube 7, and the straight tube 7 is linearly symmetrically evenly distributed on the top of the fine filter 13.

[0028] The rotation of the waterproof servo motor 8 can drive the threaded plate 18 to spirally extract the water flow, which is convenient for stabilizing the structure, increasing the overall adaptability, facilitating the pumping of water flow and diversion, and stabilizing the efficiency of stirring and diversion.

[0029] In another embodiment, Figure 1-Figure 4As shown, the bottom of the support ring 20 fits with the top of the fine filter screen 13, and the straight cylinder 7 movably penetrates the sand and gravel layer 6, the coke layer 15 and the activated carbon layer 16 and is connected at both ends to the fine filter screen 13 and the top of the sand and gravel layer 6.

[0030] By setting the straight cylinder 7 and the support ring 20, the support ring 20 provides support for the straight cylinder 7 so that it can stand in the middle of the filling layer, and the waterproof servo motor 8 can perform spiral transmission to guide the water flow, which is convenient for increasing the stirring capacity, and can increase the mixing capacity inside the water flow, indirectly increasing the oxygen mixing capacity, and at the same time, because the straight cylinder 7 is independent, it can be arranged and distributed according to actual needs, further increasing adaptability and practicality.

[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A continuous aerated biological fluidized bed for sewage treatment, comprising a tank body (1), characterized in that: A connecting pipe (2) is fixedly sleeved inside one side of the pool body (1); the top of the connecting pipe (2) is connected to an air guide pipe (3); the other end of the air guide pipe (3) is connected to a bellows (4); a one-way valve (21) is arranged inside the air guide pipe (3); a valve (5) is arranged inside the connecting pipe (2); one end of the connecting pipe (2) is connected to a central pipe (10); both sides of the central pipe (10) are connected to a plurality of side pipes (11); the other ends of the side pipes (11) and the central pipe (10) are connected to a circulation pipe (9); the circulation pipe (9), the central pipe (10) and the side pipes (11) are all provided with a plurality of communication holes (12); a support frame (12) is fixedly installed inside the pool body (1) 4), a fine filter (13) is movably mounted on the top of the support frame (14), a sealing edge (19) is movably sleeved on the outer side of the fine filter (13), a plurality of straight cylinders (7) are movably placed on the top of the fine filter (13), a waterproof servo motor (8) is arranged at the top of the straight cylinder (7), a rotating shaft (17) is transmission-connected to the output end of the waterproof servo motor (8), a threaded plate (18) is fixedly mounted on the outer side of the rotating shaft (17), a gravel layer (6) is arranged inside the pool body (1), a coke layer (15) is arranged at the bottom of the gravel layer (6), an activated carbon layer (16) is arranged at the bottom of the coke layer (15), and a support ring (20) is fixedly mounted on the outer side of the bottom end of the straight cylinder (7).

2. A continuous aerated biological fluidized bed for sewage treatment according to claim 1, characterized in that: The circulation pipe (9), the central pipe (10) and the side pipes (11) are all fixedly installed inside the tank body (1); the circulation pipe (9) is located outside the central pipe (10) and the side pipes (11); and the side pipes (11) are linearly symmetrically evenly distributed on opposite sides of the circulation pipe (9) and the central pipe (10).

3. The continuous aerated biological fluidized bed for sewage treatment according to claim 1, characterized in that: The communicating holes (12) are evenly distributed in a semicircular linear manner inside the circulation pipe (9), the central pipe (10) and the side pipe (11); the communicating holes (12) are distributed within a 160° circumferential angle; and the communicating holes (12) are located inside the lower half of the circulation pipe (9), the central pipe (10) and the side pipe (11).

4. The continuous aerated biological fluidized bed for sewage treatment according to claim 1, characterized in that: The outer side of the sealing edge (19) is in contact with the inner wall of the tank body (1).

5. The continuous aerated biological fluidized bed for sewage treatment according to claim 1, characterized in that: The waterproof servo motor (8) is fixedly mounted inside the top end of the straight cylinder (7) via a bracket, a spiral rubber strip is arranged on the outside of the threaded plate (18), the outside of the threaded plate (18) is in contact with the inner wall of the straight cylinder (7), and the straight cylinder (7) is evenly distributed on the top of the fine filter (13) in a linearly symmetrical manner.

6. The continuous aerated biological fluidized bed for sewage treatment according to claim 1, characterized in that: The bottom of the support ring (20) fits with the top of the fine filter (13), and the straight cylinder (7) movably penetrates the sand and gravel layer (6), the coke layer (15) and the activated carbon layer (16) and is connected at both ends to the fine filter (13) and the top of the sand and gravel layer (6).

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