Multistage AO process sewage treatment equipment

Abstract

The utility model relates to the technical field of sewage treatment equipment, and discloses multistage AO process sewage treatment equipment which comprises a shell, an anaerobic zone, an anoxic zone and an aerobic zone are arranged in the shell, the outer wall of the aerobic zone is fixedly connected with an air pump, the output end of the air pump is fixedly connected with an air inlet pipe, and the output end of the air inlet pipe is fixedly connected with an air outlet pipe. The inner wall of the aerobic zone is fixedly connected with a fixing mechanism for fixing the air inlet pipe, the inner wall of the aerobic zone is fixedly connected with a rotating assembly, the rotating assembly is fixedly connected with an aeration disc, and a connecting assembly is arranged between the air inlet pipe and the aeration disc. According to the multi-stage AO process sewage treatment equipment, two groups of aeration discs are arranged, after one group is damaged, the other group can continue to work, normal aeration work of an aerobic zone can be ensured, meanwhile, when the multi-stage AO process sewage treatment equipment is cleaned, the aeration discs can be lifted up, workers are prevented from being stumbled by a pipe network of the aeration discs, and the working efficiency is improved. The possibility that the aeration head is trampled is avoided, and the operation is simple and convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of sewage treatment equipment, in particular to multi-stage AO process sewage treatment equipment. Background Art

[0002] The multi-stage AO process sewage treatment equipment achieves effective removal of nitrogen and phosphorus in sewage through multi-stage anoxic and aerobic alternating treatment in biological reaction tanks. In the anoxic tank, denitrifying bacteria perform denitrification to reduce nitrate concentration and achieve the purpose of nitrogen removal, while in the aerobic tank, polyphosphate bacteria absorb phosphorus in sewage to achieve phosphorus removal. The aerobic section uses aerobic microorganisms to degrade organic matter and convert it into harmless substances, reducing the BOD and COD concentrations in sewage, thereby improving water quality.

[0003] The patent with the current announcement number CN214528317U discloses a multi-stage AO process integrated sewage treatment equipment, including a main pipeline; a first sewage pipe; a second sewage pipe; a first throttle valve; a second throttle valve; an instantaneous receiving pipe; a loop pipe; a filter plate, the first sewage pipe is passed through the middle of the main pipeline, the second sewage pipe is installed at one end of the main pipeline, and the other end of the main pipeline is connected to the instantaneous receiving pipe, the other end of the main pipeline is passed through the loop pipe at a position close to the instantaneous receiving pipe, the first throttle valve is installed on the surface of the instantaneous receiving pipe, and the second throttle valve is installed on the surface of the main pipeline between the loop pipe and the first sewage pipe; a power part, the power part is installed between the second sewage pipe to facilitate the rapid disassembly of the filter plate, the temporary storage chamber can temporarily store the sewage, and after the first throttle valve is closed, the sewage is directly pumped into the main pipeline by the water pump to avoid leakage of excess sewage.

[0004] However, the above technology still has the following problems:

[0005] The equipment is in a highly corrosive environment for a long time, and is susceptible to corrosion and wear. It is also easy to accumulate various impurities and dirt, and is more likely to cause secondary pollution. Therefore, the equipment must be cleaned regularly. During the cleaning process, since the aeration disk is placed at the bottom of the aerobic zone, the aeration disk will hinder the cleaning work of the staff, and it is also easy to trip and step on the aeration head, thereby causing certain economic losses. Utility Model Content

[0006] In view of the deficiencies in the prior art, the utility model provides a multi-stage AO process sewage treatment equipment, which is convenient for staff to clean the inside of the equipment and ensures that the aeration disk is not damaged.

[0007] The utility model provides the following technical solutions: a multi-stage AO process sewage treatment equipment, comprising a shell, wherein an anaerobic zone, an anoxic zone and an aerobic zone are arranged in the shell, an outer wall of the aerobic zone is fixedly connected to an air pump, an output end of the air pump is fixedly connected to an air inlet pipe, an inner wall of the aerobic zone is fixedly connected to a fixing mechanism for fixing the air inlet pipe, a rotating assembly is fixedly connected to the inner wall of the aerobic zone, an aeration disk is fixedly connected to the rotating assembly, and a connecting assembly is arranged between the air inlet pipe and the aeration disk.

[0008] Furthermore, the fixing mechanism comprises a U-shaped fixing block fixed on the inner wall of the aerobic zone, a groove is provided on the side of the U-shaped fixing block, a first rotating shaft is rotatably connected in the groove, and an arc plate is rotatably connected to the first rotating shaft.

[0009] Furthermore, the circle formed by the U-shaped fixing block and the arc-shaped plate is the same as the cross section of the air intake pipe.

[0010] Furthermore, the rotating assembly includes two support rods fixed to the inner wall of the aerobic zone, the front ends of the support rods are fixedly connected to the second rotating shaft, the second rotating shaft is rotatably connected to a connecting rod, the front ends of the connecting rods are fixedly connected to the aeration disk, and positioning blocks are provided on both sides of the connecting rods.

[0011] Furthermore, the connecting assembly includes an annular fixing block fixed to the front end of the air inlet pipe, a rubber ring is fixedly connected to the surface of the annular fixing block, a nut is sleeved on the annular fixing block, and a threaded tube corresponding to the nut is fixedly connected to the front end of the aeration plate.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] This multi-stage AO process sewage treatment equipment divides the aeration discs into two groups. If one group is damaged, the other group can continue to work, thereby ensuring normal aeration of the aerobic zone. At the same time, when cleaning the multi-stage AO process sewage treatment equipment, the aeration discs can be propped up to prevent staff from being tripped by the pipe network of the aeration discs and avoid the possibility of the aeration head being stepped on. The operation is simple and convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the three-dimensional structure of the overall front side of the utility model;

[0015] Figure 2 This is a schematic diagram of the internal three-dimensional structure of the aerobic zone of the utility model;

[0016] Figure 3 It is a three-dimensional structural schematic diagram of the rotating assembly of the utility model;

[0017] Figure 4 It is a three-dimensional structural schematic diagram of the connection assembly of the utility model;

[0018] Figure 5 for Figure 3 Enlarged view of point A above.

[0019] In the figure: 1. shell; 2. air pump; 3. air inlet pipe; 4. fixing mechanism; 401. U-shaped fixing block; 402. groove; 403. first rotating shaft; 404. arc plate; 5. rotating assembly; 501. support rod; 502. second rotating shaft; 503. connecting rod; 6. aeration plate; 7. connecting assembly; 701. annular fixing block; 702. rubber ring; 703. nut; 704. threaded pipe. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0021] See also Figures 1 to 5 A multi-stage AO process sewage treatment equipment comprises a shell 1, in which an anaerobic zone, an anoxic zone and an aerobic zone are arranged, an air pump 2 is fixedly connected to the outer wall of the aerobic zone, an air inlet pipe 3 is fixedly connected to the output end of the air pump 2, a fixing mechanism 4 for fixing the air inlet pipe 3 is fixedly connected to the inner wall of the aerobic zone, a rotating assembly 5 is fixedly connected to the inner wall of the aerobic zone, an aeration disk 6 is fixedly connected to the rotating assembly 5, and a connecting assembly 7 is arranged between the air inlet pipe 3 and the aeration disk 6.

[0022] The multi-stage AO process sewage treatment equipment in the utility model is similar in structure to the existing multi-stage AO process integrated sewage treatment equipment, such as the patent with announcement number CN214528317U which discloses a multi-stage AO process integrated sewage treatment equipment. The main improvement of the utility model is that the aeration plate 6 can be detachably connected to the air inlet pipe 3 through the connecting component 7, and the aeration plate 6 can be rotated around the second rotating shaft 502 of the rotating component 5, which is convenient for cleaning the equipment and prevents the pipe network of the aeration plate 6 from tripping the staff or stepping on the aeration head. Figures 1 to 5As shown, the multi-stage AO process sewage treatment equipment in the utility model, when cleaning, the staff first rotates the nut 703 to separate the nut 703 from the threaded tube 704, so that the aeration plate 6 can be separated from the air inlet pipe 3, and then the aeration plate 6 is pulled upward. Since the aeration plate 6 is fixedly connected to the connecting rod 503 of the rotating component 5, and the connecting rod 503 is rotatably connected to the second rotating shaft 502, the aeration plate 6 can be rotated upward around the second rotating shaft 502 until the aeration plate 6 leans against the inner wall of the aerobic zone. At this time, the aeration plate 6 is away from the bottom wall of the aerobic zone, which is convenient for the staff to clean and prevents the staff from being helped or stepping on the aeration head. After the cleaning is completed, the aeration plate 6 is pulled to rotate downward around the second rotating shaft 502, and the nut 703 is threadedly connected to the threaded tube 704 again, and the equipment can be aerated. The rubber ring 702 can make the connection tighter to prevent leakage from affecting the aeration effect.

[0023] like Figure 5 As shown, the fixing mechanism 4 includes a U-shaped fixing block 401 fixed to the inner wall of the aerobic zone, a groove 402 is provided on the side of the U-shaped fixing block 401, a first rotating shaft 403 is rotatably connected in the groove 402, and an arc plate 404 is rotatably connected to the first rotating shaft 403.

[0024] Specifically, the air intake pipe 3 is placed on the U-shaped fixing block 401, and at the same time, the arc plate 404 is rotated so that the air intake pipe 3 is placed between the U-shaped fixing block 401 and the arc plate 404, and the arc plate 404 and the U-shaped fixing block 401 are fixed by bolts, so that the air intake pipe 3 is fixed. At the same time, the opposite operation can also facilitate the removal of the air intake pipe 3 and its replacement.

[0025] like Figure 5 As shown, the circle formed by the U-shaped fixing block 401 and the arc-shaped plate 404 is the same as the cross section of the air intake pipe 3 .

[0026] Specifically, the circle formed by the U-shaped fixing block 401 and the arc-shaped plate 404 is the same as the cross section of the air intake pipe 3, ensuring that the fixing mechanism 4 can well fix the air intake pipe 3 and prevent the air intake pipe 3 from shaking.

[0027] like Figure 2 As shown, the rotating assembly 5 includes two support rods 501 fixed to the inner wall of the aerobic zone, the front end of the support rod 501 is fixedly connected to the second rotating shaft 502, the second rotating shaft 502 is rotatably connected to a connecting rod 503, the front end of the connecting rod 503 is fixedly connected to the aeration plate 6, and positioning blocks 504 are arranged on both sides of the connecting rod 503.

[0028] Specifically, the aeration plate 6 is pulled upward. Since the aeration plate 6 is fixedly connected to the connecting rod 503 of the rotating assembly 5, and the connecting rod 503 is rotatably connected to the second rotating shaft 502, the aeration plate 6 can be rotated upward around the second rotating shaft 502 until the aeration plate 6 leans against the inner wall of the aerobic zone. At this time, the aeration plate 6 is away from the bottom wall of the aerobic zone, which is convenient for the staff to clean. The positioning block 504 ensures the rotation of the aeration plate 6 in the vertical direction. There is no displacement when it is put down horizontally, which makes it convenient to align the aeration plate 6 with the air inlet pipe 3.

[0029] like Figure 3 As shown, the connecting assembly 7 includes an annular fixing block 701 fixed to the front end of the air inlet pipe 3, a rubber ring 702 is fixedly connected to the surface of the annular fixing block 701, a nut 703 is sleeved on the annular fixing block 701, and a threaded tube 704 corresponding to the nut 703 is fixedly connected to the front end of the aeration plate 6.

[0030] Specifically, when the aeration plate 6 is at the bottom of the aerobic zone, the staff first turns the nut 703 to separate the nut 703 from the threaded tube 704, and then the aeration plate 6 and the air inlet pipe 3 can be separated. The annular fixing block 701 prevents the nut 703 from falling off. On the contrary, when the aeration plate 6 and the air inlet pipe 3 are connected together, the nut 703 and the threaded tube 704 are threadedly connected. Since the annular fixing block 701 is inside the nut 703, the nut 703 and the threaded tube 704 squeeze the annular fixing block 701, so that the rubber ring 702 and the aeration plate 6 fit more closely, thereby preventing a gap from appearing at the connection between the aeration plate 6 and the air inlet pipe 3, which affects the aeration effect.

[0031] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A multi-stage AO process sewage treatment equipment, comprising a housing (1), wherein an anaerobic zone, an anoxic zone and an aerobic zone are arranged in the housing (1), characterized in that: The outer wall of the aerobic zone is fixedly connected to an air pump (2), the output end of the air pump (2) is fixedly connected to an air inlet pipe (3), the inner wall of the aerobic zone is fixedly connected to a fixing mechanism (4) for fixing the air inlet pipe (3), the inner wall of the aerobic zone is fixedly connected to a rotating assembly (5), an aeration disk (6) is fixedly connected to the rotating assembly (5), and a connecting assembly (7) is provided between the air inlet pipe (3) and the aeration disk (6).

2. A multi-stage AO process sewage treatment equipment according to claim 1, characterized in that: The fixing mechanism (4) comprises a U-shaped fixing block (401) fixed to the inner wall of the aerobic zone, a groove (402) is provided on the side of the U-shaped fixing block (401), a first rotating shaft (403) is rotatably connected in the groove (402), and an arc plate (404) is rotatably connected to the first rotating shaft (403).

3. A multi-stage AO process sewage treatment equipment according to claim 2, characterized in that: The circle formed by the U-shaped fixing block (401) and the arc-shaped plate (404) has the same cross section as the air intake pipe (3).

4. A multi-stage AO process sewage treatment equipment according to claim 1, 2 or 3, characterized in that: The rotating assembly (5) comprises two support rods (501) fixed to the inner wall of the aerobic zone, the front end of the support rod (501) is fixedly connected to a second rotating shaft (502), a connecting rod (503) is rotatably connected to the second rotating shaft (502), the front end of the connecting rod (503) is fixedly connected to the aeration disk (6), and positioning blocks (504) are arranged on both sides of the connecting rod (503).

5. A multi-stage AO process sewage treatment equipment according to claim 1, 2 or 3, characterized in that: The connection assembly (7) comprises an annular fixing block (701) fixed to the front end of the air inlet pipe (3), a rubber ring (702) being fixedly connected to the surface of the annular fixing block (701), a nut (703) being sleeved on the annular fixing block (701), and a threaded pipe (704) corresponding to the nut (703) being fixedly connected to the front end of the aeration plate (6).

6. A multi-stage AO process sewage treatment equipment according to claim 4, characterized in that: The connection assembly (7) comprises an annular fixing block (701) fixed to the front end of the air inlet pipe (3), a rubber ring (702) being fixedly connected to the surface of the annular fixing block (701), a nut (703) being sleeved on the annular fixing block (701), and a threaded pipe (704) corresponding to the nut (703) being fixedly connected to the front end of the aeration plate (6).

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