Tail water treatment device for aerobic denitrification nitrogen removal

Abstract

The utility model relates to the technical field of tail water treatment devices. The tail water treatment device comprises a treatment barrel, the upper end of the treatment barrel is connected with a barrel cover in a clamped mode, the lower end of the left end face of the treatment barrel is communicated with a water inlet pipe, and the outer wall of the upper end of the barrel cover is rotationally connected with an aeration cleaning mechanism. A first filter plate, an aerobic bacteria storage box and a second filter frame are sequentially and fixedly connected in an inner cavity of the treatment barrel from bottom to top, and a fixing mechanism for fixing a filter element is connected to the upper end of the second filter frame in a clamped mode. The first filter plate is further prevented from being blocked, and the tail water treatment effect of the device is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of tailwater treatment technology, and in particular to a tailwater treatment device for aerobic denitrification. Background Technology

[0002] Traditional biological nitrogen removal processes require separate anoxic and aerobic tanks to complete the denitrification and nitrification processes respectively. However, aerobic denitrification, as an emerging nitrogen removal technology, allows most aerobic denitrifying bacteria to simultaneously remove organic matter and nitrogen from wastewater. This eliminates the need for a separate anaerobic reactor, resulting in lower operating and maintenance costs, and virtually no accumulation of nitrates and nitrites during the treatment process.

[0003] Typically, wastewater treatment involves first filtering out impurities, followed by aerobic bacterial treatment. However, over time, the amount of filtered impurities increases. Wastewater that initially passed quickly and smoothly through the filter becomes clogged, narrowing the flow channels and slowing the flow rate. This means a reduction in the amount of wastewater passing through the filter per unit time, decreasing treatment capacity. Furthermore, clogging reduces the filter's effectiveness in intercepting impurities, allowing some impurities that should have been filtered out to enter subsequent treatment stages, increasing the burden on later processes and potentially affecting the stable operation of the entire wastewater treatment system. Utility Model Content

[0004] This utility model addresses the shortcomings of existing technologies by providing the following technical solution:

[0005] An aerobic denitrification wastewater treatment device includes a treatment tank, with a tank cover snapped onto the upper end of the treatment tank and an inlet pipe connected to the lower end of the left side of the treatment tank. An aeration and cleaning mechanism is rotatably connected to the outer wall of the upper end of the tank cover. A first filter plate, an aerobic bacteria storage box, and a second filter frame are fixedly connected from bottom to top in the inner cavity of the treatment tank. A fixing mechanism for fixing the filter element is snapped onto the upper end of the second filter frame.

[0006] The aeration cleaning mechanism includes a first rotating shaft, an air inlet pipe, a second rotating shaft, a cleaning plate, and an aeration pipe. The outer wall of the first rotating shaft is rotatably connected to the inner wall of the bucket lid. The lower end of the air inlet pipe is rotatably connected to the inner wall of the upper end of the first rotating shaft. The outer wall of the second rotating shaft is rotatably connected to the inner wall of the second filter frame, and the upper end of the second rotating shaft is engaged with the lower end of the first rotating shaft. The adjacent ends of the cleaning plates are fixedly connected to the outer wall of the lower end of the second rotating shaft, and the upper end of the cleaning plates overlaps with the lower end face of the first filter plate. The adjacent ends of the aeration pipes are connected to the outer wall of the second rotating shaft.

[0007] As an improvement to the above technical solution, the aeration cleaning mechanism includes a force-bearing plate, and one end of the force-bearing plate that is close to each other is fixedly connected to the outer wall of the second rotating shaft.

[0008] As an improvement to the above technical solution, a water outlet pipe is connected to the right side of the treatment tank, and an aerobic bacteria replenishment pipe is connected to the middle of the left side of the treatment tank.

[0009] As an improvement to the above technical solution, the lower end of the first rotating shaft is rectangular and engages with the upper end of the second rotating shaft.

[0010] As an improvement to the above technical solution, the fixing mechanism includes a cover plate, a connecting rod, a fixing rod, and a spring. The outer wall of the cover plate is engaged with the upper end of the second filter frame. The lower end of the connecting rod is fixedly connected to the upper end face of the cover plate, and the upper end of the connecting rod is fixedly connected to the lower end face of the lid. The outer wall of the right end of the fixing rod penetrates the upper end of the left side face of the processing bucket and engages with the inner cavity of the lower end of the lid. The right end of the spring is fixedly connected to the upper end of the left side face of the processing bucket, and the left end of the spring is fixedly connected to the left end of the fixing rod.

[0011] As an improvement to the above technical solution, a pull plate is installed on the left end of the fixing rod to facilitate personnel to pull, and the right end of the pull plate is fixedly connected to the left end of the spring.

[0012] The beneficial effects of this utility model are:

[0013] The first filter plate installed inside the treatment tank filters impurities in the effluent. Then, the effluent passes through an aeration and cleaning mechanism to increase oxygen levels, allowing aerobic denitrifying bacteria to react with the effluent. The effluent then undergoes further filtration through a second filter frame. Simultaneously, the flow of effluent drives the second rotating shaft, which in turn rotates the cleaning plate, cleaning the first filter plate. Air enters the first and second rotating shafts through the air inlet pipe, then flows through the second rotating shaft into the aeration pipe, and finally exits through the aeration pipe. This increases the oxygen content in the effluent, and the air discharged from the aeration pipe also cleans the first filter plate, further preventing clogging and ensuring the effectiveness of the effluent treatment. Attached Figure Description

[0014] Figure 1 This is a structural diagram of the present utility model;

[0015] Figure 2 This utility model Figure 1 The front view;

[0016] Figure 3 This utility model Figure 2 Top view;

[0017] Figure 4 This utility model Figure 3 Sectional view at point aa;

[0018] Figure 5 This utility model Figure 4 Enlarged view of point c in the middle;

[0019] Figure 6 This utility model Figure 4 Enlarged view of point b in the middle.

[0020] Reference numerals in the attached drawings: 1. Treatment tank; 2. Tank lid; 3. Inlet pipe; 4. First filter plate; 5. Aerobic bacteria storage box; 6. Second filter frame; 7. Outlet pipe; 8. Aeration and cleaning mechanism; 81. First rotating shaft; 82. Air inlet pipe; 83. Second rotating shaft; 84. Cleaning plate; 85. Force plate; 86. Aeration pipe; 9. Fixing mechanism; 91. Cover plate; 92. Connecting rod; 93. Fixing rod; 94. Spring. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this utility model clearer, the following provides a more detailed description of the utility model. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of the utility model.

[0022] Please see Figure 1-6 This utility model provides a technical solution: an aerobic denitrification wastewater treatment device, including a treatment tank 1, a tank cover 2 attached to the upper end of the treatment tank 1, and an inlet pipe 3 connected to the lower end of the left side of the treatment tank 1. An aeration and cleaning mechanism 8 is rotatably connected to the outer wall of the upper end of the tank cover 2. A first filter plate 4, an aerobic bacteria storage box 5, and a second filter frame 6 are fixedly connected from bottom to top in the inner cavity of the treatment tank 1. A fixing mechanism 9 for fixing the filter element is attached to the upper end of the second filter frame 6.

[0023] The aeration cleaning mechanism 8 includes a first rotating shaft 81, an air inlet pipe 82, a second rotating shaft 83, a cleaning plate 84, and an aeration pipe 86. The outer wall of the first rotating shaft 81 is rotatably connected to the inner wall of the bucket cover 2. The lower end of the air inlet pipe 82 is rotatably connected to the inner wall of the upper end of the first rotating shaft 81. The outer wall of the second rotating shaft 83 is rotatably connected to the inner wall of the second filter frame 6, and the upper end of the second rotating shaft 83 is engaged with the lower end of the first rotating shaft 81. The adjacent ends of the cleaning plates 84 are fixedly connected to the outer wall of the lower end of the second rotating shaft 83, and the upper end of the cleaning plates 84 overlaps with the lower end face of the first filter plate 4. The adjacent ends of the aeration pipes 86 are connected to the outer wall of the second rotating shaft 83.

[0024] The first filter plate 4 installed inside the treatment tank 1 filters impurities in the effluent. Then, the effluent passes through the aeration and cleaning mechanism 8 to increase the oxygen content, which in turn causes aerobic denitrifying bacteria to react with the effluent. The effluent is then further filtered by the second filter frame 6. At the same time, the flow of effluent drives the second rotating shaft 83 to rotate, which in turn drives the cleaning plate 84 to rotate and clean the first filter plate 4. An external air pump is started, which allows air to enter the first rotating shaft 81 and the second rotating shaft 83 through the air inlet pipe 82. The air then enters the aeration pipe 86 through the second rotating shaft 83 and is finally discharged through the aeration pipe 86, thereby increasing the oxygen content in the effluent. At the same time, the air discharged from the aeration pipe 86 can also clean the first filter plate 4, further preventing the first filter plate 4 from clogging and ensuring the effectiveness of the device in treating the effluent.

[0025] Specifically, the aeration cleaning mechanism 8 includes a force-bearing plate 85, with one end of the force-bearing plate 85 close to the other fixedly connected to the outer wall of the second rotating shaft 83.

[0026] The flow of tailwater causes the force plate 85 to drive the second rotating shaft 83 to rotate. At the same time, the rotation of the second rotating shaft 83 drives the cleaning plate 84 and the aeration pipe 86 to rotate. The rotation of the cleaning plate 84 can clean the lower end of the first filter plate 4, while the gas discharged from the aeration pipe 86 can clean the upper end of the first filter plate 4.

[0027] Specifically, the right side of the treatment tank 1 is connected to the water outlet pipe 7, and the middle of the left side of the treatment tank 1 is connected to the aerobic bacteria replenishment pipe.

[0028] The aerobic bacteria replenishment pipe installed on the left side of the treatment tank 1 allows personnel to easily replenish the aerobic bacteria storage box 5, thus ensuring the stability of the device's effluent treatment. Meanwhile, the treated water is discharged through the outlet pipe 7.

[0029] Specifically, the lower end of the first rotating shaft 81 is rectangular and engages with the upper end of the second rotating shaft 83.

[0030] The engagement of the first rotating shaft 81 and the second rotating shaft 83 ensures the stability of the gas entering the device by rotating the second rotating shaft 83, which drives the first rotating shaft 81 to rotate.

[0031] Specifically, the fixing mechanism 9 includes a cover plate 91, a connecting rod 92, a fixing rod 93, and a spring 94. The outer wall of the cover plate 91 is engaged with the upper end of the second filter frame 6. The lower end of the connecting rod 92 is fixedly connected to the upper end face of the cover plate 91, and the upper end of the connecting rod 92 is fixedly connected to the lower end face of the bucket lid 2. The outer wall of the right end of the fixing rod 93 penetrates the upper end of the left side face of the processing bucket 1 and is engaged with the inner cavity of the lower end of the bucket lid 2. The right end of the spring 94 is fixedly connected to the upper end of the left side face of the processing bucket 1, and the left end of the spring 94 is fixedly connected to the left end of the fixing rod 93.

[0032] like Figure 4 As shown, by pulling the fixing rod 93, the fixing rod 93 is released from the fixation of the bucket lid 2. The person then raises the bucket lid 2, which in turn drives the connecting rod 92 and the cover plate 91 to rise. The cover plate 91 rises and loses its engagement with the second filter frame 6, so that the person can replace the filter element inside the second filter frame 6, thereby ensuring the effect of the device on the treatment of tailwater.

[0033] Specifically, a pull plate is installed on the left end of the fixed rod 93 to facilitate pulling by personnel, and the right end of the pull plate is fixedly connected to the left end of the spring 94.

[0034] like Figure 6 As shown, by pulling the pull plate, the fixed rod 93 moves to the left, causing the bucket lid 2 to move upward. The movement of the bucket lid 2 causes the connecting rod 92 and the cover plate 91 to move upward, thus facilitating the replacement of the filter element on the inner wall of the second filter frame 6.

[0035] The above embodiments are only used to illustrate the technical solution of this utility model, and are not intended to limit it.

Claims

1. An aerobic denitrification wastewater treatment device, comprising a treatment tank (1), characterized in that: The upper end of the treatment tank (1) is snapped with the tank cover (2), and the lower end of the left end face of the treatment tank (1) is connected to the water inlet pipe (3). The outer wall of the upper end of the tank cover (2) is rotatably connected to the aeration cleaning mechanism (8). The inner cavity of the treatment tank (1) is fixedly connected from bottom to top to the first filter plate (4), the aerobic bacteria storage box (5) and the second filter frame (6). The upper end of the second filter frame (6) is snapped with the fixing mechanism (9) for fixing the filter element. The aeration cleaning mechanism (8) includes a first rotating shaft (81), an air inlet pipe (82), a second rotating shaft (83), a cleaning plate (84), and an aeration pipe (86). The outer wall of the first rotating shaft (81) is rotatably connected to the inner wall of the bucket cover (2). The lower end of the air inlet pipe (82) is rotatably connected to the inner wall of the upper end of the first rotating shaft (81). The outer wall of the second rotating shaft (83) is rotatably connected to the inner wall of the second filter frame (6). The upper end of the second rotating shaft (83) is engaged with the lower end of the first rotating shaft (81). The two ends of the cleaning plate (84) are fixedly connected to the outer wall of the lower end of the second rotating shaft (83). The upper end of the cleaning plate (84) overlaps with the lower end of the first filter plate (4). The two ends of the aeration pipe (86) are connected to the outer wall of the second rotating shaft (83).

2. The aerobic denitrification wastewater treatment device according to claim 1, characterized in that: The aeration cleaning mechanism (8) includes a force plate (85), and one end of the force plate (85) that is close to each other is fixedly connected to the outer wall of the second rotating shaft (83).

3. The aerobic denitrification wastewater treatment device according to claim 1, characterized in that: The right side of the treatment tank (1) is connected to a water outlet pipe (7), and the middle of the left side of the treatment tank (1) is connected to an aerobic bacteria replenishment pipe.

4. The aerobic denitrification wastewater treatment device according to claim 1, characterized in that: The lower end of the first rotating shaft (81) is rectangular and engages with the upper end of the second rotating shaft (83).

5. The aerobic denitrification wastewater treatment device according to claim 1, characterized in that: The fixing mechanism (9) includes a cover plate (91), a connecting rod (92), a fixing rod (93), and a spring (94). The outer wall of the cover plate (91) is engaged with the upper end of the second filter frame (6). The lower end of the connecting rod (92) is fixedly connected to the upper end face of the cover plate (91), and the upper end of the connecting rod (92) is fixedly connected to the lower end face of the bucket lid (2). The outer wall of the right end of the fixing rod (93) penetrates the upper end of the left side face of the processing bucket (1) and is engaged with the inner cavity of the lower end of the bucket lid (2). The right end of the spring (94) is fixedly connected to the upper end of the left side face of the processing bucket (1), and the left end of the spring (94) is fixedly connected to the left end of the fixing rod (93).

6. The aerobic denitrification wastewater treatment device according to claim 5, characterized in that: The left end of the fixed rod (93) is equipped with a pull plate that is easy for people to pull, and the right end of the pull plate is fixedly connected to the left end of the spring (94).

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