Sewage station aeration tank

Abstract

The utility model discloses a sewage station aeration tank which comprises a raft plate, an outer side tank wall is fixed at the top of the raft plate, a plurality of tank body stand columns are fixed at the top of the raft plate, the surfaces of the plurality of tank body stand columns are fixedly connected with the surface of the outer side tank wall, and a first PTFE membrane material and a second PTFE membrane material are fixed among the plurality of tank body stand columns. The inner space of the outer side pool wall is divided by a first PTFE membrane material and a second PTFE membrane material, the inner part of the outer side pool wall is divided into an anaerobic pool, an anoxic pool and four aerobic pools, and upper overflowing holes are formed in the surface of the first PTFE membrane material on one side of the anoxic pool, the surface of the first PTFE membrane material on one side in the aerobic pool on the rear side and the surface of the first PTFE membrane material on one side. According to the utility model, the inside of the tank body is separated by using the PTFE membrane material, so that the civil engineering cost can be obviously saved, the construction efficiency can be improved, the maintenance cost can be reduced, and higher flexibility and environmental friendliness are achieved.

Description

Technical Field

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

[0002] In wastewater treatment plants at food processing companies, the biochemical unit treatment process typically utilizes an AAO simultaneous nitrogen and phosphorus removal process. The tanks consist of anaerobic, anoxic, and aerobic tanks. The number of tanks in each unit is determined based on parameters such as the wastewater plant's influent volume, water quality, and effluent requirements. The tanks are typically constructed of reinforced concrete.

[0003] In the construction cost of the entire sewage station, the civil engineering cost of the pool body usually accounts for about 2 / 3 of the investment cost of the entire sewage station. It can be seen that optimizing the pool body structure and reducing the civil engineering cost of the pool body can effectively reduce the investment cost of the entire sewage station. Utility Model Content

[0004] The purpose of the utility model is to provide an aeration tank for a sewage treatment plant, which uses PTFE membrane materials to separate the tank body, thereby not only significantly saving civil engineering costs, but also improving construction efficiency, reducing maintenance costs, and having higher flexibility and environmental friendliness.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a sewage station aeration tank, comprising a raft, an outer pool wall is fixed on the top of the raft, a plurality of pool body columns are fixed on the top of the raft, the surfaces of the plurality of pool body columns are fixedly connected to the surface of the outer pool wall, a first PTFE membrane material and a second PTFE membrane material are fixed between the plurality of pool body columns, the internal space of the outer pool wall is divided by the first PTFE membrane material and the second PTFE membrane material, the interior of the outer pool wall is divided into an anaerobic tank, an anoxic tank and an aerobic tank, and there are four aerobic tanks, the first PTFE membrane material on one side of the anoxic tank and the rear aerobic tank have upper flow holes on the surface of the first PTFE membrane material on one side, and lower flow holes on the surface of the second PTFE membrane material, aeration mechanisms are provided on the front and rear sides of the outer pool wall, and the surface of the outer pool wall is connected to a drain valve.

[0006] As a preferred aeration tank for a sewage station of the present invention, the aeration mechanism includes an air pump, the air delivery end of the air pump is connected to a diversion pipe, two mounting shells are provided on the surface of the diversion pipe, the diversion pipe passes through the mounting shell, the mounting shell is fixedly connected to the inner wall of the outer pool wall, one end of the diversion pipe is connected to a rotary joint, one end of the rotary joint is connected to an aeration pipe, the aeration pipe is located inside the aerobic tank, and the surface of the aeration pipe is connected to multiple aeration disks.

[0007] As a preferred aeration tank for a sewage station of the present invention, a chute is provided on the top of the mounting shell, a cylinder is fixed on the top of the mounting shell, a connecting plate is fixed at one end of the cylinder, the connecting plate is slidably connected to the surface of the chute, a rack plate is fixed at the bottom of the connecting plate, a driving shaft is rotatably connected to the upper inner wall of the mounting shell, a gear is fixed on the surface of the driving shaft, the rack plate is engaged with the gear, sprockets are fixed on the driving shaft and the surface of the aeration pipe, and the sprockets on the upper and lower sides are connected by chain transmission.

[0008] As a preferred aeration tank for a sewage station of the present invention, the surface of the aeration pipe is rotatably connected to a plurality of support seats, the support seats are fixedly connected to the surface of the raft plate, the inner wall of the mounting shell is fixed with a guide rod, and the surface of the guide rod slides through the rack plate.

[0009] As a preferred embodiment of the aeration tank for a sewage station of the present invention, a balancing pipe is fixed on the surface of the first PTFE membrane material where the upper flow holes are located.

[0010] As a preferred embodiment of a sewage station aeration tank of the present invention, the upper flow holes are located above the surface of the first PTFE membrane material, and the lower flow holes are located below the surface of the second PTFE membrane material.

[0011] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0012] 1. The utility model can replace the partition wall made of concrete through the combination of PTFE membrane material and pool body columns, and the installation of PTFE membrane material is relatively simple and quick, which can simplify the construction process. Compared with traditional concrete walls or other physical partition methods, the installation of membrane material is lighter and faster, which greatly shortens the construction period and saves civil engineering costs. At the same time, PTFE membrane material also has the advantages of high strength, wide operating temperature range, good self-cleaning property, rainwater can wash away the attachments on its surface, long service life, and completely inert surface. Harsh environments such as mold, acid rain, etc. will not affect the membrane surface. Compared with traditional concrete partition, this PTFE membrane partition pool will be able to have better practicality.

[0013] 2. The utility model is provided with an aeration mechanism. During the aeration process, the cylinder can be adjusted back and forth so that the cylinder can drive the rack plate to move back and forth through the connecting plate. When the rack plate moves, it will drive the gear to move, so that the driving shaft can drive the upper sprocket to rotate, and the upper sprocket can drive the aeration pipe to rotate together through the cooperation of the chain and the lower sprocket, so that when the cylinder is pushed back and forth, the aeration pipe can obtain a back and forth rotation effect. This can avoid local impact on the water body caused by concentrated emission of bubbles, and also increase the surface area of ​​contact between gas and water, making oxygen transfer more efficient, especially the vortex formed when the aeration pipe rotates, which can further stir the water body and promote oxygen dissolution. Through the combination of the two, oxygen can reach almost every corner of the water body in the aerobic pool. Compared with static aeration, this back and forth rotation method can more efficiently utilize oxygen and improve the aeration effect of sewage. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the three-dimensional structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the three-dimensional structure of the utility model from another perspective;

[0016] Figure 3 It is a schematic diagram of the partial cross-sectional structure of the utility model;

[0017] Figure 4 It is a schematic diagram of the partial cross-sectional structure of the utility model;

[0018] Figure 5 It is a partial top view structural diagram of the utility model;

[0019] Figure 6 This is a structural diagram of the aeration mechanism in the utility model;

[0020] Figure 7 It is a partial cross-sectional structural diagram of the aeration mechanism in the utility model;

[0021] Figure 8 It is a schematic diagram of the partial cross-sectional structure of the aeration mechanism in the utility model.

[0022] In the figure: 1. raft; 2. outer pool wall; 3. pool body column; 4. first PTFE membrane material; 5. second PTFE membrane material; 6. anaerobic tank; 7. anoxic tank; 8. aerobic tank; 9. aeration mechanism; 901. air pump; 902. diverter pipe; 903. mounting shell; 904. aeration pipe; 905. aeration disc; 906. support seat; 907. chute; 908. cylinder; 909. rack plate; 910. driving shaft; 911. gear; 912. sprocket; 913. rotary joint; 914. guide rod; 10. upper flow hole; 11. lower flow hole; 12. balance pipe; 13. drain valve. DETAILED DESCRIPTION

[0023] See also Figure 1-8 , a sewage station aeration tank, including a raft 1, an outer pool wall 2 is fixed on the top of the raft 1, a plurality of pool body columns 3 are fixed on the top of the raft 1, the surfaces of the plurality of pool body columns 3 are fixedly connected to the surface of the outer pool wall 2, a first PTFE membrane material 4 and a second PTFE membrane material 5 are fixed between the plurality of pool body columns 3, the inner space of the outer pool wall 2 is divided by the first PTFE membrane material 4 and the second PTFE membrane material 5, the inner part of the outer pool wall 2 is divided into an anaerobic tank 6, an anoxic tank 7 and an aerobic tank 8, the number of aerobic tanks 8 is four, the first PTFE membrane material 4 on one side of the anoxic tank 7, and the aerobic tank 8 on the rear side, the first PTFE membrane material 4 on one side are provided with upper flow holes 10, the surface of the second PTFE membrane material 5 is provided with lower flow holes 11, aeration mechanisms 9 are provided on the front and rear sides of the outer pool wall 2, and a drain valve 13 is connected to the surface of the outer pool wall 2;

[0024] The sewage entering the outer pool wall 2 will first be located in the anaerobic tank 6, and the first PTFE membrane material 4 and the second PTFE membrane material 5 will be able to separate the inner part of the outer pool wall 2. Figure 5 The sewage moves in the middle flow direction through multiple upper flow holes 10 and lower flow holes 11, so that the sewage can pass through the anaerobic tank 6, the anoxic tank 7 and multiple aerobic tanks 8. The aeration mechanism 9 can aerate the sewage in the aerobic tank 8, and opening the drain valve 13 can allow the sewage to be discharged normally. The PTFE membrane and the pool body column 3 are used for partitioning, which can replace the partition wall made of concrete. In addition, the installation of the PTFE membrane is relatively simple and fast, which can simplify the construction process. Compared with traditional concrete walls or other physical partition methods, the installation of the membrane is lighter and faster, which greatly shortens the construction period, thereby saving civil engineering costs. At the same time, the PTFE membrane also has high strength, a wide range of usable temperature, good self-cleaning properties, rainwater can wash away the attachments on its surface, long service life, and a completely inert surface. Harsh environments such as mold, acid rain, etc. will not affect the membrane surface. Compared with traditional concrete partitions, this PTFE membrane partition pool will be more practical.

[0025] Furthermore, the aeration mechanism 9 includes an air pump 901, the air delivery end of the air pump 901 is connected to a shunt pipe 902, two mounting shells 903 are provided on the surface of the shunt pipe 902, the shunt pipe 902 passes through the mounting shell 903, the mounting shell 903 is fixedly connected to the inner wall of the outer pool wall 2, one end of the shunt pipe 902 is connected to a rotary joint 913, one end of the rotary joint 913 is connected to an aeration pipe 904, the aeration pipe 904 passes through the mounting shell 903, the aeration pipe 904 is located inside the aerobic tank 8, and the surface of the aeration pipe 904 is connected to multiple aeration disks 905;

[0026] When the air pump 901 is started, high-pressure air can be delivered to the inside of the two aeration pipes 904 through the diversion pipe 902 and the rotary joint 913, and then sprayed upward by the aeration disk 905, so that the sewage inside the aerobic pool 8 can be aerated and purified.

[0027] Furthermore, a chute 907 is provided on the top of the mounting shell 903, a cylinder 908 is fixed to the top of the mounting shell 903, a connecting plate is fixed to one end of the cylinder 908, the connecting plate is slidably connected to the surface of the chute 907, a rack plate 909 is fixed to the bottom of the connecting plate, a driving shaft 910 is rotatably connected to the upper inner wall of the mounting shell 903, a gear 911 is fixed to the surface of the driving shaft 910, the rack plate 909 is meshed with the gear 911, sprockets 912 are fixed to the surface of the driving shaft 910 and the aeration pipe 904, and the sprockets 912 on the upper and lower sides are connected by a chain transmission;

[0028] During the aeration process, the cylinder 908 can be adjusted back and forth so that the cylinder 908 can drive the rack plate 909 to move back and forth through the connecting plate. When the rack plate 909 moves, it drives the gear 911 to move, so that the driving shaft 910 can drive the upper sprocket 912 to rotate. The upper sprocket 912 can drive the aeration pipe 904 to rotate together through the cooperation of the chain and the lower sprocket 912. When the cylinder 908 pushes back and forth, the aeration pipe 904 can rotate back and forth. This can avoid local impact on the water body caused by concentrated emission of bubbles, and also increase the surface area of ​​contact between gas and water, making oxygen transfer more efficient. In particular, the vortex formed when the aeration pipe 904 rotates can further stir the water body and promote oxygen dissolution. Through the combination of the two, oxygen can reach almost every corner of the water body in the aerobic tank 8. Compared with static aeration, this back and forth rotation method can more efficiently utilize oxygen and improve the aeration effect of the sewage.

[0029] Furthermore, the surface of the aeration pipe 904 is rotatably connected to a plurality of support seats 906, the support seats 906 are fixedly connected to the surface of the raft 1, and a guide rod 914 is fixed to the inner wall of the mounting shell 903, and the surface of the guide rod 914 slides through the rack plate 909;

[0030] The support seat 906 can provide support for the aeration tube 904, thereby improving the stability of the aeration tube 904 during rotation. When the rack plate 909 is moving, the rack plate 909 will be able to slide on the surface of the guide rod 914. The guide rod 914 can provide a linear guide effect for the rack plate 909 to avoid position displacement of the rack plate 909.

[0031] Furthermore, a balance pipe 12 is fixed on the surface of the first PTFE membrane material 4 where the upper flow hole 10 is located;

[0032] The balancing pipe 12 can prevent the liquid level difference in the front and rear adjacent pools from being too large, which would cause the shared pool wall membrane to generate additional pressure, so that the balancing pipe 12 can balance the liquid level difference in the front and rear pools when water is first filled.

[0033] Furthermore, the upper flow hole 10 is located above the surface of the first PTFE membrane material 4, and the lower flow hole 11 is located below the surface of the second PTFE membrane material 5;

[0034] Through this staggered distribution of holes, the water flow can be more evenly distributed throughout the pool, avoiding local water flow concentration or stagnation, thereby improving the treatment efficiency of the entire system.

[0035] In this example, the size of the upper flow hole 10 and the lower flow hole 11 is related to the flow rate between the tank bodies when the sewage station is in operation. When calculating the flow area, the flow velocity in the flow hole shall not be greater than 0.15m / s. In this way, the liquid level difference between the sewage from the first tank body to the last tank body is very small, and the pressure of the sewage in the adjacent tank bodies on the shared tank wall membrane is very small and can be ignored.

[0036] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A sewage station aeration tank, comprising a raft (1), wherein an outer tank wall (2) is fixed on the top of the raft (1), characterized in that: A plurality of pool body columns (3) are fixed on the top of the raft plate (1), and the surfaces of the plurality of pool body columns (3) are fixedly connected to the surface of the outer pool wall (2). A first PTFE membrane material (4) and a second PTFE membrane material (5) are fixed between the plurality of pool body columns (3). The inner space of the outer pool wall (2) is divided by the first PTFE membrane material (4) and the second PTFE membrane material (5). The inner space of the outer pool wall (2) is divided into an anaerobic tank (6), an anoxic tank (7) and an aerobic tank (8). There are four aerobic tanks (8). The first PTFE membrane material (4) on one side of the anoxic tank (7) and the aerobic tank (8) on the rear side are provided with upper flow holes (10) on the surface of the first PTFE membrane material (4) on one side, and a lower flow hole (11) on the surface of the second PTFE membrane material (5). Aeration mechanisms (9) are provided on both the front and rear sides of the outer pool wall (2), and a drain valve (13) is connected to the surface of the outer pool wall (2).

2. The sewage treatment plant aeration tank according to claim 1, characterized in that: The aeration mechanism (9) comprises an air pump (901), the air delivery end of the air pump (901) is connected to a shunt pipe (902), the surface of the shunt pipe (902) is provided with two mounting shells (903), the shunt pipe (902) passes through the mounting shell (903), the mounting shell (903) is fixedly connected to the inner wall of the outer pool wall (2), one end of the shunt pipe (902) is connected to a rotary joint (913), one end of the rotary joint (913) is connected to an aeration pipe (904), the aeration pipe (904) is located inside the aerobic pool (8), and the surface of the aeration pipe (904) is connected to a plurality of aeration disks (905).

3. The sewage treatment plant aeration tank according to claim 2, characterized in that: A slide groove (907) is provided on the top of the mounting shell (903), a cylinder (908) is fixed on the top of the mounting shell (903), a connecting plate is fixed on one end of the cylinder (908), the connecting plate is slidably connected to the surface of the slide groove (907), a rack plate (909) is fixed on the bottom of the connecting plate, a driving shaft (910) is rotatably connected to the upper inner wall of the mounting shell (903), a gear (911) is fixed on the surface of the driving shaft (910), the rack plate (909) is meshed with the gear (911), sprockets (912) are fixed on the surface of the driving shaft (910) and the aeration pipe (904), and the sprockets (912) on the upper and lower sides are connected by chain transmission.

4. The sewage treatment plant aeration tank according to claim 3, characterized in that: The surface of the aeration pipe (904) is rotatably connected to a plurality of support seats (906), the support seats (906) are fixedly connected to the surface of the raft (1), the inner wall of the mounting shell (903) is fixed with a guide rod (914), and the surface of the guide rod (914) slides through the rack plate (909).

5. The sewage treatment plant aeration tank according to claim 1, characterized in that: A balance tube (12) is fixed on the surface of the first PTFE membrane material (4) where the upper flow hole (10) is located.

6. The sewage treatment plant aeration tank according to claim 1, characterized in that: The upper flow hole (10) is located above the surface of the first PTFE membrane material (4), and the lower flow hole (11) is located below the surface of the second PTFE membrane material (5).

Images