Uniform aeration pipeline of aerobic tank

Abstract

The utility model discloses a uniform aeration pipeline for an aerobic tank, which is used for uniformly aerating sewage in the aerobic tank and comprises an aeration pipe network, a main aeration pipeline, an auxiliary ring pipe and an auxiliary aeration pipeline, the aeration pipe network is arranged at the bottom of the aerobic tank, and aeration holes are uniformly distributed in the aeration pipe network; two groups of main aeration pipelines are arranged, the bottoms of the main aeration pipelines are symmetrically arranged, and aeration pipe networks are externally connected with air inlet sources respectively; the auxiliary ring pipe is arranged between the two groups of aeration pipe networks, and a plurality of aeration holes are uniformly distributed in the auxiliary ring pipe; the bottoms of the two groups of auxiliary aeration pipelines are symmetrically arranged on the auxiliary ring pipe and are externally connected with an air inlet source respectively. According to the utility model, two sets of aeration pipelines are arranged in the aerobic tank, each set of aeration pipeline adopts two groups of air inlets of opposite adjustable valves, and the two groups of air inlets can be adjusted as required, so that the aeration is uniform, the air waste is reduced, the air utilization efficiency and the sludge and sewage mixing effect are improved, the microbial degradation efficiency is improved, and the energy consumption is reduced.

Description

Technical Field

[0001] The utility model relates to a device for the sewage treatment field, in particular to a uniform aeration pipeline for an aerobic tank. Background Art

[0002] In the sewage treatment process, the aerobic aeration tank is widely used. Its principle is to transport air through an air delivery pipeline to an aeration device arranged at the bottom of the tank, and the air diffuses out in the form of bubbles. Oxygen is dissolved into the water at the gas-liquid interface to meet the oxygen demand of aerobic microorganisms and the mixing condition of sufficient contact between the sewage and the activated sludge. The pollutants in the sewage are degraded through the alternating action of microorganisms in the aeration tank.

[0003] The main energy consumption of the aeration system is electricity. The main measure to reduce the energy consumption of the biochemical system is to improve the aeration control efficiency, reduce the waste of oxygen, and thus reduce the aeration air volume. In the prior art, the combination of devices such as microporous aeration can well improve the oxygen utilization rate. However, most of the existing aeration pipeline systems are still relatively single in form, and the phenomenon of uneven aeration in the aerobic tank often occurs. In addition, although microporous aeration improves the utilization efficiency of oxygen, it also sacrifices the stirring effect of air on the sewage to a large extent, resulting in a reduction in the mixing effect of the activated sludge and the sewage and a decline in the microbial degradation efficiency. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a uniform aeration pipeline for an aerobic tank, which can solve the problem of uneven aeration in the aerobic tank and also improve the stirring and mixing effect of air on the sewage. It has a simple structure, uniform and adjustable air distribution, high air utilization rate, improves the mixing effect of sludge and sewage, improves the microbial degradation efficiency, and reduces the energy consumption.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0006] A uniform aeration pipeline for an aerobic tank is used for uniformly aerating the sewage in the aerobic tank, and includes an aeration pipe network, an aeration pipe network, an auxiliary ring pipe, and an auxiliary aeration pipeline; the aeration pipe network is arranged at the bottom of the aerobic tank, and aeration holes are uniformly distributed on the aeration pipe network; the main aeration pipeline is arranged in two groups, and the bottoms of the two groups of aeration pipe networks are symmetrically arranged on the aeration pipe network. The tops of the two groups of aeration pipe networks are respectively externally connected to an air inlet source for introducing the main air source into the aerobic tank; the auxiliary ring pipe is arranged between the two groups of aeration pipe networks and is located above the aeration pipe network, and a plurality of aeration holes are uniformly distributed on the auxiliary ring pipe; the auxiliary aeration pipeline is arranged in two groups, and the bottoms of the two groups of auxiliary aeration pipelines are symmetrically arranged on the auxiliary ring pipe. The tops of the two groups of auxiliary aeration pipelines are respectively externally connected to an air inlet source for introducing the auxiliary air source into the aerobic tank.

[0007] Preferably, the aeration pipe network comprises a main ring pipe and branch pipes of a rectangular frame; the branch pipe is connected to the main ring pipe; the auxiliary ring pipe also adopts a rectangular frame structure and is parallel to the main ring pipe, and a plurality of small holes are evenly distributed on the lower inner side of the rectangular frame of the auxiliary ring pipe.

[0008] Preferably, the branch pipe includes a vertical pipe and several transverse pipes, and the several transverse pipes are evenly arranged on the vertical pipe in a cross manner, forming a "丰" shape as a whole, and several transverse pipes are provided with microporous aeration disks; the two ends of the vertical pipe of the branch pipe are respectively connected to a group of two parallel opposite sides of the main ring pipe of the rectangular frame.

[0009] Preferably, aeration holes are provided at the bottom of the auxiliary ring tube, and the aeration holes are evenly distributed and oriented toward the center of the main ring tube.

[0010] Preferably, the diameter of the aeration holes is 8mm-10mm.

[0011] Preferably, the included angle between the aeration holes and the vertical plane of the auxiliary ring pipe is 40°-45°.

[0012] Preferably, the two groups of aeration pipe networks respectively include a main air inlet, a main pipe valve and a main vertical pipe; the bottom of the main vertical pipe is vertically and symmetrically arranged on another group of two parallel opposite sides of the main ring pipe of the rectangular frame, and the top of the main vertical pipe is connected to the main air inlet. The main air inlets of the two groups of aeration pipe networks are symmetrically arranged in back to back relation, and a main pipe valve is provided on the main air inlet. The main air inlet is connected to an external air intake source through the main pipe valve, and the air source connected to the main air inlet is passed into the aerobic tank through the aeration pipe network by means of the main vertical pipe.

[0013] Preferably, the two groups of auxiliary aeration pipelines respectively include auxiliary air inlets, auxiliary pipe valves and auxiliary vertical pipelines; the bottom of the auxiliary vertical pipeline is vertically and symmetrically arranged on the auxiliary ring pipe, the top of the auxiliary vertical pipeline is connected with an auxiliary air inlet, the auxiliary air inlets of the two groups of auxiliary aeration pipelines are symmetrically arranged back to back, the auxiliary air inlets are provided with auxiliary pipe valves, the auxiliary air inlets are connected to an external air intake source through the auxiliary pipe valve, and the air source connected to the auxiliary air inlet is introduced into the aerobic tank through the auxiliary ring pipe by means of an auxiliary vertical pipeline.

[0014] Preferably, the auxiliary ring pipe is located above the aeration pipe network, and the whole presents a three-dimensional pipe network structure.

[0015] The beneficial effects of the utility model are as follows:

[0016] The utility model can adjust the intake pressure and flow of the corresponding two groups of air inlets by adjusting the opening of the main valve, so as to ensure that the pressure of the main ring pipe is balanced and adjustable, thereby making the aeration uniform, reducing air waste, and improving air utilization efficiency.

[0017] The utility model adjusts the air flow rate and intensity by adjusting the opening degree of the auxiliary pipe valve, thereby changing the mixed flow state of the sludge and sewage in the aerobic tank, improving the mixing effect of the sludge and sewage, thereby improving the microbial degradation efficiency and reducing the energy consumption.

[0018] The auxiliary loop pipe of the rectangular frame is annular, and the air holes on the auxiliary loop pipe are arranged above the aeration pipe network, and the air holes are opened obliquely downward, so that the air can gather in the aerobic tank, and the cooperation with the aeration pipe network can improve the mixing effect of the sludge and sewage in the aerobic tank, thereby improving the microbial degradation efficiency and reducing the energy consumption.

[0019] In summary, the utility model sets two sets of aeration pipelines in the aerobic tank. Each set of aeration pipelines adopts two groups of air inlets arranged back to back, and each group of air inlets is equipped with an adjustable valve, which can be adjusted according to needs, so as to make the aeration uniform, reduce air waste, thereby improving the air utilization efficiency, improving the mixing effect of the sludge and sewage, thereby improving the microbial degradation efficiency and reducing the energy consumption. Description of the Drawings

[0020] Figure 1 It is a schematic structural diagram of a uniform aeration pipeline for an aerobic tank provided for the embodiment;

[0021] Figure 2 It is a schematic structural diagram of the aeration pipe network in a uniform aeration pipeline for an aerobic tank provided for the embodiment;

[0022] Figure 3 It is a schematic structural diagram of the auxiliary aeration pipeline in a uniform aeration pipeline for an aerobic tank provided for this embodiment;

[0023] Figure 4 It is a schematic structural diagram of the aeration pipe network in a uniform aeration pipeline for an aerobic tank provided for this embodiment.

[0024] The serial numbers in the figure are as follows:

[0025] 1, main aeration pipeline; 11, main air inlet; 12, main pipe valve; 13, main vertical pipe; 14, aeration pipe network; 141, main loop pipe; 142, branch pipe; 2, auxiliary aeration pipeline; 21, auxiliary air inlet; 22, auxiliary pipe valve; 23, auxiliary vertical pipe; 24, auxiliary loop pipe. Detailed Embodiment

[0026] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments.

[0027] Figure 1 It is a schematic structural diagram of a uniform aeration pipeline for an aerobic tank provided for the embodiment.

[0028] Figure 2 Schematic diagram of the aeration pipe network structure in the aerobic tank uniform aeration pipeline provided for the embodiment.

[0029] Figure 3 Schematic diagram of the auxiliary aeration pipeline structure in the aerobic tank uniform aeration pipeline provided for the embodiment.

[0030] Figure 4 Schematic diagram of the aeration pipe network structure in the aerobic tank uniform aeration pipeline provided for the embodiment.

[0031] As Figures 1 to 4 shown, a uniform aeration pipeline for an aerobic tank provided by the present utility model is used for uniformly aerating the sewage in the aerobic tank, and includes an aeration pipe network 14, a main aeration pipeline 1, an auxiliary ring pipe 24, and an auxiliary aeration pipeline 2.

[0032] The aeration pipe network 14 is arranged at the bottom of the aerobic tank. The aeration pipe network 14 includes a main ring pipe 141 of a rectangular frame and branch pipes 142. The branch pipes 142 include a vertical pipe and several horizontal pipes. The several horizontal pipes are uniformly arranged on the vertical pipe in a cross manner, and the whole is in a "feng" shape. Micro pore aeration discs are arranged on the several horizontal pipes. The two ends of the vertical pipe of the branch pipe 142 are respectively communicated with a group of two parallel opposite sides of the main ring pipe 141 of the rectangular frame.

[0033] Two groups of main aeration pipelines 1 are adopted. The two groups of main aeration pipelines 1 respectively include a main air inlet 11, a main pipe valve 12, and a main vertical pipe 13. The bottoms of the main vertical pipes 13 are vertically and symmetrically arranged on the other group of two parallel opposite sides of the main ring pipe 141 of the rectangular frame in a communicating manner. The top of the main vertical pipe 13 is communicated with a main air inlet 11. The main air inlets 11 of the two groups of main aeration pipelines 1 are symmetrically arranged in opposite directions. A main pipe valve 12 is arranged on the main air inlet 11. The main air inlet 11 is externally connected to an air source through the main pipe valve 12. The air source externally connected to the main air inlet 11 is introduced into the aerobic tank through the aeration pipe network 14 by using the main vertical pipe 13. By adjusting the opening degree of the main pipe valve 12, the intake pressure and flow rate of the corresponding two groups of main air inlets 11 can be adjusted, so as to ensure the balanced and adjustable pressure on the two groups of main ring pipes 141, so that the aeration pipe network 14 aerates the aerobic tank uniformly, reduces air waste, and thus improves the air utilization efficiency.

[0034] The auxiliary ring pipe 24 is arranged between the two groups of main vertical pipes 13 and is located above the aeration pipe network 14, and the whole is in a three-dimensional pipe network structure. A plurality of aeration holes are uniformly distributed on the lower side of the bottom of the auxiliary ring pipe 24, and the aeration holes are uniformly distributed, and the hole positions of the aeration holes face the center of the main ring pipe 141.

[0035] Further, the diameter of the air holes on the auxiliary loop pipe 24 is 8 mm - 10 mm, and the angle between the air holes and the vertical plane of the air pipe network 14 is 40° - 45°.

[0036] Two groups of auxiliary air pipe lines 2 are adopted. The two groups of auxiliary air pipe lines 2 respectively include an auxiliary air inlet 21, an auxiliary pipe valve 22 and an auxiliary vertical pipe 23. The bottoms of the auxiliary vertical pipes 23 are vertically and symmetrically arranged on the auxiliary loop pipe 24 in a communicating manner. The tops of the auxiliary vertical pipes 23 are communicated with an auxiliary air inlet 21. The auxiliary air inlets 21 of the two groups of auxiliary air pipe lines 2 are symmetrically arranged back to back. An auxiliary pipe valve 22 is arranged on the auxiliary air inlet 21. The auxiliary air inlet 21 is externally connected to an air source through the auxiliary pipe valve 22. The auxiliary air source externally connected to the auxiliary air inlet 21 is introduced into the aerobic tank through the auxiliary loop pipe 24 by means of the auxiliary vertical pipe 23. By adjusting the opening degree of the auxiliary pipe valve 12, the air flow rate and intensity can be adjusted. Cooperating with the air pipe network 14, the mixed flow state of the sludge and sewage in the aerobic tank can be changed, the mixing effect of the sludge and sewage in the aerobic tank can be improved, so as to improve the microbial degradation efficiency and reduce the energy consumption.

[0037] The working principle of the present utility model is as follows:

[0038] During use, air enters through the corresponding main air inlets 11 on both sides of the air pipe network 14. Through an externally connected air source, compressed air enters from the main air inlets 11 on both sides of the air pipe network 14 respectively, passes through the main vertical pipe 13 to the air holes at its bottom and then enters the main loop pipe 141 of the air pipe network 14, and is discharged through the micro pore aeration discs on the branched pipes 142 in the shape of a Chinese character "feng" connected to the main loop pipe 141. The auxiliary air pipe line 2 also adopts the method of symmetrically introducing air from both sides for ventilation.

[0039] Further, this embodiment is tested in three working modes:

[0040] (1) When the auxiliary pipe valve 22 of the auxiliary air pipe line 2 is kept fully closed, the liquid level in the aerobic tank is kept at 30 cm above the micro pore aeration discs on the branched pipes 142. The main pipe valves 12 at the main air inlets 11 on both sides of the air pipe network 14 are opened. Observe the air output of the micro pore aeration discs on the branched pipes 142 in the aerobic tank. Adjust the opening degree of the main pipe valve 12 until the air output of each micro pore aeration disc is uniform. When the water in the aerobic tank enters to the normal liquid level, it can be observed that the aeration is still uniform and no obvious aeration dead angle appears.

[0041] Under the working state of the above serial number (1), open the auxiliary pipe valve 22 of one side of the auxiliary air inlet 21. Turbulence appears on the water surface. After waiting for 5 minutes, the turbulence disappears and the water surface surges regularly to the side where the auxiliary pipe valve 22 is not opened.

[0042] In the working state of the above serial number (2), open the auxiliary pipe valve 22 of the auxiliary air inlet 21 on the other side, wait for 5 minutes and observe the water surface state. It is found that the water surface begins to surge from the surrounding to the center, but it is still a bit chaotic, and the surging degree around is different. At this time, adjust the opening degrees of the two groups of auxiliary pipe valves 22 respectively according to the surging degree until the water surfaces around maintain a similar surging degree.

[0043] As an optimization, the utility model adopts two aeration pipelines in an aerobic tank, and each aeration pipeline is provided with two symmetric air inlets. At the same time, each air inlet is equipped with an adjustable valve. By adjusting the opening degree of the main pipe valve, the air inlet pressure and flow on both sides can be adjusted, which can ensure that the pressure of the main loop pipe is balanced and adjustable, so as to make the aeration uniform, reduce air waste, and thus improve the air utilization efficiency; the air flow and intensity can be adjusted by adjusting the opening degree of the auxiliary pipe valve, so as to change the mixing flow state of the sludge and sewage in the tank, improve the mixing effect of the sludge and sewage, thus improve the microbial degradation efficiency and reduce the energy consumption.

[0044] The utility model is provided with two sets of aeration pipelines in the aerobic tank. Each set of aeration pipelines adopts two groups of air inlets arranged back to back. Each group of air inlets is equipped with an adjustable valve, which can be adjusted according to needs, so as to make the aeration uniform, reduce air waste, thus improve the air utilization efficiency, improve the mixing effect of the sludge and sewage, thus improve the microbial degradation efficiency and reduce the energy consumption.

[0045] The above is only the preferred specific embodiment of the utility model, but the protection scope of the utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the utility model, according to the technical solution of the utility model and its inventive concept, makes equivalent substitution or change, and should be covered within the protection scope of the utility model.

Claims

1. An aerobic tank uniform aeration pipeline for uniformly aerating the sewage in the aerobic tank, characterized in that: It includes an aeration pipe network (14), a main aeration pipeline (1), an auxiliary ring pipe (24) and an auxiliary aeration pipeline (2); The aeration pipe network (14) is arranged at the bottom of the aerobic tank, and aeration holes are evenly distributed on the aeration pipe network (14); The main aeration pipelines (1) are arranged in two groups. The bottoms of the two groups of main aeration pipelines (1) are symmetrically arranged on the aeration pipe network (14), and the tops of the two groups of main aeration pipelines (1) are respectively externally connected to an air inlet source for introducing the main air source into the aerobic tank; The auxiliary ring pipe (24) is arranged between the two groups of main aeration pipelines (1) and is located above the aeration pipe network (14). A number of aeration holes are evenly distributed on the auxiliary ring pipe (24); The auxiliary aeration pipelines (2) are arranged in two groups. The bottoms of the two groups of auxiliary aeration pipelines (2) are symmetrically arranged on the auxiliary ring pipe (24), and the tops of the two groups of auxiliary aeration pipelines (2) are respectively externally connected to an air inlet source for introducing the auxiliary air source into the aerobic tank.

2. The aerobic tank uniform aeration pipeline according to claim 1, wherein: The aeration pipe network (14) includes a main ring pipe (141) with a rectangular frame and branch pipes (142); the branch pipes (142) are communicated with the main ring pipe (141); The auxiliary ring pipe (24) also adopts a rectangular frame structure and is parallel to the main ring pipe (141). A number of small holes are evenly distributed below the inner side of the rectangular frame of the auxiliary ring pipe (24).

3. The aerobic pond uniform aeration pipeline according to claim 2, wherein: The branch pipe (142) includes a vertical pipe and a number of horizontal pipes. The number of horizontal pipes are evenly arranged on the vertical pipe in a crossed manner, presenting an "abundant" shape as a whole. Micro-pore aeration discs are arranged on the number of horizontal pipes; Both ends of the vertical pipe of the branch pipe (142) are respectively communicated with a group of two parallel opposite sides of the main ring pipe (141) of the rectangular frame.

4. The aerobic tank uniform aeration pipeline according to claim 2, characterized in that: The bottom of the auxiliary ring pipe (24) is provided with aeration holes. The aeration holes are evenly distributed, and the hole positions face the center of the main ring pipe (141).

5. The aerobic tank uniform aeration pipeline according to claim 4, characterized in that: The diameter of the aeration holes is 8mm - 10mm.

6. The aerobic tank uniform aeration pipeline according to claim 4, characterized in that: The included angle between the aeration holes and the vertical plane of the auxiliary ring pipe (24) is 40° - 45°.

7. An aerobic tank uniform aeration pipeline according to claim 2, characterized in that: The two groups of main aeration pipelines (1) respectively include a main air inlet (11), a main pipe valve (12) and a main vertical pipeline (13); The bottom of the main vertical pipeline (13) is vertically and communicatively symmetrically arranged on the other group of two parallel opposite sides of the main ring pipe (141) of the rectangular frame. The top of the main vertical pipeline (13) is communicated with a main air inlet (11). The main air inlets (11) of the two groups of main aeration pipelines (1) are symmetrically arranged back to back. A main pipe valve (12) is arranged on the main air inlet (11). The main air inlet (11) is externally connected to an air inlet source through the main pipe valve (12), and the air source externally connected to the main air inlet (11) is introduced into the aerobic tank through the aeration pipe network (14) by using the main vertical pipeline (13).

8. An aerobic tank uniform aeration pipeline according to claim 1, characterized in that: The two groups of auxiliary aeration pipelines (2) respectively include an auxiliary air inlet (21), an auxiliary pipe valve (22) and an auxiliary vertical pipeline (23); The bottom of the auxiliary vertical pipe (23) is vertically and communicatively symmetrically arranged on the auxiliary loop pipe (24). The top of the auxiliary vertical pipe (23) is communicated with an auxiliary air inlet (21). The auxiliary air inlets (21) of the two groups of auxiliary aeration pipelines (2) are symmetrically arranged back to back. An auxiliary pipe valve (22) is arranged on the auxiliary air inlet (21). The auxiliary air inlet (21) is externally connected to an air source through the auxiliary pipe valve (22). The air source externally connected to the auxiliary air inlet (21) is introduced into the aerobic tank through the auxiliary loop pipe (24) by means of the auxiliary vertical pipe (23).

9. An aerobic tank uniform aeration pipeline according to claim 1, characterized in that: The auxiliary loop pipe (24) is located above the aeration pipe network (14) and has an overall three-dimensional pipe network structure.

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