Aeration filtering device with nitrifying bacteria early warning function and sewage pipe network

Abstract

The application discloses a nitrifying bacteria early warning aeration filter device and sewage pipe network, the nitrifying bacteria early warning aeration filter device comprises a filter assembly, an aeration assembly and a sampling assembly, the filter assembly comprises a filter element, the filter element is made of carborundum material, the filter element is provided with an air hole and a filter cavity, and the sampling assembly is arranged in the filter cavity. The air hole is communicated with the filtering cavity and the outer part of the filtering element; the aeration assembly comprises an aeration pipe which can be communicated with an air source, and the aeration pipe is communicated with the filter cavity; the sampling assembly comprises a sampling pipe communicated with the filtering cavity and a vacuum pump arranged on the sampling pipe.

Description

Technical Field

[0001] This application relates to the field of wastewater treatment technology, and more specifically, to an aeration filtration device and sewage pipe network for nitrifying bacteria early warning. Background Technology

[0002] In recent years, with continuous social progress and rapid industrial economic development, the frequency of pollution accidents in chemical, metallurgical, and paper manufacturing enterprises has been increasing year by year. These industrial enterprises generate incompletely treated wastewater and accidental discharge containing toxic substances during production processes. Unable to be directly discharged into the natural environment, these wastewaters are instead discharged into sewage pipe networks, eventually converging at downstream municipal wastewater treatment plants. This situation leads to abnormal fluctuations in the influent water quality of wastewater treatment plants, with frequent occurrences of high COD and high ammonia nitrogen wastewater. More importantly, various untreated heavy metals and organic toxins reach downstream wastewater treatment plants via industrial wastewater, severely impacting activated sludge systems and significantly affecting normal wastewater treatment processes, potentially even causing the collapse of biological treatment systems.

[0003] In view of this, many water plants have designed specific nitrifying bacteria aeration early warning devices to make early warnings and predictions by measuring the ammonia nitrogen removal rate before and after aeration.

[0004] However, in actual operation, these nitrifying bacteria aeration early warning devices require continuous aeration and filtration of nitrifying bacteria sludge, resulting in high maintenance frequency and a large workload. Utility Model Content

[0005] One objective of this application is to provide a new technical solution for an aeration filtration device with nitrifying bacteria early warning.

[0006] According to a first aspect of this application, an aeration and filtration device for nitrifying bacteria early warning is provided. This device includes a filtration assembly, an aeration assembly, and a sampling assembly. The filtration assembly includes a filter element made of corundum material, the filter element having pores and a filter chamber, the pores connecting the filter chamber and the outside of the filter element. The aeration assembly includes an aeration pipe capable of communicating with an air source, and the aeration pipe is connected to the filter chamber. The sampling assembly includes a sampling pipe communicating with the filter chamber and a vacuum pump disposed on the sampling pipe.

[0007] Optionally, the sampling tube is provided with a bifurcated structure on the side near the filter cavity. The bifurcated structure includes at least two bifurcated tubes, which are located in the filter cavity and communicate with the sampling tube. The bifurcated tubes are evenly distributed around the circumference of the sampling tube.

[0008] Optionally, there are multiple branching structures, and the multiple branching structures are evenly distributed along the axial direction of the sampling tube.

[0009] Optionally, the bifurcation tube has a first end and a second end disposed opposite to each other, the first end being connected to the sampling tube, and the diameter of the bifurcation tube gradually decreasing from the first end to the second end.

[0010] Optionally, the aeration assembly further includes a blower, which is connected to the aeration pipe.

[0011] Optionally, the aeration filtration device for nitrifying bacteria early warning further includes an aeration valve and a sampling valve. The two ends of the aeration valve are respectively connected to the blower and the aeration pipe, and the aeration valve is used to control the opening and closing of the air path. The two ends of the sampling valve are respectively connected to the sampling pipe and the vacuum pump, and the sampling valve is used to control the opening and closing of the sampling liquid path. The aeration valve and the sampling valve are signal-connected to the central controller and are controlled in conjunction with the central controller.

[0012] Optionally, the aeration and filtration device for nitrifying bacteria early warning further includes a multi-port pipe, wherein the filter element, the aeration assembly, and the sampling assembly are respectively connected to the multi-port pipe; wherein the filter element and the aeration assembly are located at opposite ends of the multi-port pipe.

[0013] Optionally, the filter element has an opening, a connecting pipe is provided at the opening, the connecting pipe is connected to the multi-port pipe, and sealing plates are provided at the other ends of the multi-port pipe. The multi-port pipe, the connecting pipe and the filter chamber are connected to form a sealed cavity.

[0014] Optionally, the filter element may be spherical, conical, or rectangular; and / or the cross-section of the bifurcation tube may be circular, square, or polygonal.

[0015] According to a second aspect of this application, a wastewater network is provided, the wastewater network including a central controller and an aeration and filtration device for nitrifying bacteria early warning as described above, the central controller being signal-connected to the aeration component and the sampling component.

[0016] In this embodiment, air is pumped into the filter chamber through an aeration pipe to aerate the water sample and clean the filter section. A vacuum pump creates negative pressure in the filter chamber through a sampling pipe, allowing the sampling pipe to obtain water samples from the filter chamber for monitoring. Since both the aeration and sampling components are connected to the filter chamber, the aeration filtration device can switch between aeration and sampling states. It fully utilizes the pores of the filter element to automatically aerate and sample the wastewater being tested. This not only enables the aeration filtration device to achieve self-cleaning and self-maintenance, effectively reducing workload, but also achieves continuous high-efficiency aeration and filtration capabilities.

[0017] Other features and advantages of this application will become clear from the following detailed description of exemplary embodiments with reference to the accompanying drawings. Attached Figure Description

[0018] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments of the present application and, together with their description, serve to explain the principles of the present application.

[0019] Figure 1 This is a schematic diagram of the aeration and filtration device in the embodiments of this application;

[0020] Figure 2 This is a schematic diagram of the cone-shaped filter element in the embodiments of this application;

[0021] Figure 3 This is a schematic diagram of the spherical filter element in the embodiments of this application;

[0022] Figure 4 This is a schematic diagram of the rectangular filter element in the embodiments of this application.

[0023] Explanation of reference numerals in the attached figures:

[0024] 1-Filter assembly; 11-Filter element; 111-Opening; 12-Filter chamber; 13-Connecting pipe; 14-Sealing plate;

[0025] 2-Aeration component; 21-Aeration pipe; 22-Blower; 23-Aeration valve;

[0026] 3-Sampling assembly; 31-Sampling tube; 311-Bifurcation tube; 3111-First end; 3112-Second end; 32-Vacuum pump; 33-Sampling valve;

[0027] 4-Multi-port pipe. Detailed Implementation

[0028] Various exemplary embodiments of the present application will now be described in detail with reference to the accompanying drawings. It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the present application.

[0029] The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the scope of this application and its application or use.

[0030] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, they should be considered part of the specification.

[0031] In all the examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values.

[0032] It should be noted that similar labels and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be discussed further in subsequent figures.

[0033] According to one embodiment of this application, an aeration filtration device for nitrifying bacteria early warning is provided. The aeration filtration device for nitrifying bacteria early warning includes a filter assembly 1, an aeration assembly 2, and a sampling assembly 3; the filter assembly 1 includes a filter element 11, which is made of corundum material and has pores and a filter chamber 12, the pores connecting the filter chamber 12 and the outside of the filter element 11; the aeration assembly 2 includes an aeration pipe 21 that can communicate with an air source, and the aeration pipe 21 is connected to the filter chamber 12; the sampling assembly 3 includes a sampling pipe 31 communicating with the filter chamber 12 and a vacuum pump 32 disposed on the sampling pipe 31.

[0034] like Figure 1 As shown, the aeration and filtration device includes a filter component 1, an aeration component 2, and a sampling component 3. Both the aeration component 2 and the sampling component 3 are connected to the filter component 1, so that the filter component 1 has a sampling state and an aeration state.

[0035] The filter assembly 1 has a filter element 11. In this embodiment, the filter element 11 is made of corundum. The surface of the filter element 11 is porous, allowing air and water to pass through. The interior is a hollow space, which is the filter chamber 12. The pores allow the filter chamber 12 to communicate with the outside of the filter element 11, facilitating the operation of the aeration filtration device.

[0036] Of course, the filter element 11 in this embodiment is not limited to the structure described above, and those skilled in the art can configure it according to actual needs. For example, the filter element 11 can also be made of other materials such as metal or ceramic, and air holes can be formed on the filter element 11.

[0037] The aeration pipe 21 of the aeration assembly 2 is connected to the filter chamber 12. During aeration, that is, when the air source of the aeration assembly 2 fills the filter chamber 12, the sampling assembly 3 is in a stopped state. Air is blown into the filter chamber 12 through the aeration pipe 21, causing the internal air pressure of the filter element 11 to be greater than the external air pressure. The gas filling the filter chamber 12 is dispersed into small bubbles through the air holes and released to the outside of the filter element 11, thus aerating the external water sample. Simultaneously, the small bubbles remove impurities adhering to the filter element 11, cleaning it and reducing the difficulty and workload of manual cleaning.

[0038] Of course, the gas source is not limited in this embodiment, and those skilled in the art can set it according to actual needs. For example, the gas source can be gas generated by the fan 22, or it can be external air, etc.

[0039] When the aeration filtration device is in sampling mode, the aeration assembly 2 stops operating. The vacuum pump 32 draws water samples from the filter element 11 through the sampling tube 31, causing the air pressure inside the filter chamber 12 to be lower than the air pressure outside the filter element 11. This allows external water samples to enter the filter chamber 12 through the pores of the filter element 11, and then be drawn in by the sampling tube 31. The pores not only trap impurities outside the filter element 11, but also allow water samples from outside the filter element 11 to enter the filter chamber 12 when the air pressure inside the filter chamber 12 is lower than the air pressure outside the filter element 11, ensuring that the sampling assembly 3 can draw in sufficient water samples for testing.

[0040] Of course, the sampling component 3 in this embodiment is not limited to the above structure, and those skilled in the art can configure it according to actual needs. For example, the sampling component 3 includes a peristaltic pump, which is connected to the sampling tube 31 to draw water samples from the filter chamber 12.

[0041] In this embodiment, air is pumped into the filter chamber 12 through the aeration pipe 21 to aerate the water sample and clean the filter section. The vacuum pump 32 creates a negative pressure in the filter chamber 12 through the sampling pipe 31, enabling the sampling pipe 31 to obtain water samples from the filter chamber 12 for monitoring. Both the aeration assembly 2 and the sampling assembly 3 are connected to the filter element 11, allowing the aeration and sampling states to be switched sequentially on the filter element 11. This fully utilizes the pores of the filter element 11 to automatically aerate and automatically sample and filter the wastewater being tested. This not only enables the aeration and filtration device to achieve self-cleaning and self-maintenance, effectively reducing workload, but also achieves continuous high-efficiency aeration and filtration capabilities.

[0042] In one example, the sampling tube 31 is provided with a bifurcation structure on the side near the filter cavity 12. The bifurcation structure includes at least two bifurcation tubes 311, which are located in the filter cavity 12 and are connected to the sampling tube 31. The bifurcation tubes 311 are evenly distributed around the sampling tube 31.

[0043] like Figure 1 As shown, the sampling tube 31 is L-shaped, with the bottom of the sampling tube 31 located inside the filter chamber 12, and the top of the sampling tube 31 extending out of the filter section and connected to the vacuum pump 32.

[0044] The sampling tube 31 has a bifurcated structure at its bottom. This bifurcated structure is an integral part of the sampling tube 31. The bifurcated structure includes at least two bifurcated tubes 311. By setting multiple bifurcated tubes 311 at the bottom of the sampling tube 31 and distributing them evenly along the circumferential direction of the sampling tube 31, the impact damage of the internal air pressure of the filter element 11 on the sampling tube 31 and the vacuum pump 32 can be reduced during aeration. Furthermore, during sampling, the sampling coverage area of ​​the sampling tube 31 within the filter chamber 12 can be increased, resulting in a more uniform sampling distribution and reducing the risk of single-channel blockage.

[0045] Of course, the bifurcation structure and sampling tube 31 in this embodiment are not limited to the above-described structure, and those skilled in the art can make modifications according to actual needs. For example, the bifurcation structure and sampling tube 31 can be connected in a detachable manner, such as by threaded connection or interference fit.

[0046] The branch tube 311 can also be Y-shaped. By connecting the bottom of the sampling tube 31 to the branch tube 311, water samples from different locations in the filter chamber 12 can be drawn, so that water samples from multiple directions can be fused in the sampling tube 31 before being tested, in order to obtain more accurate test values ​​of the water samples in the filter chamber 12.

[0047] Of course, the branch pipe 311 in this embodiment is not limited to the above structure, and those skilled in the art can make it according to actual needs. For example, the branch pipe 311 can also be M-shaped, U-shaped, or other shapes.

[0048] In one example, there are multiple branching structures, and the multiple branching structures are evenly distributed along the axial direction of the sampling tube 31.

[0049] In this embodiment, multiple branching structures are provided along the axial direction of the sampling tube 31. For example, each branching structure includes three branching tubes 311. The first branching structure is provided at the bottom of the sampling tube 31, the second branching structure is provided above the first branching structure, and the third branching structure is provided above the second branching structure. The first, second, and third branching structures are all located within the filter chamber 12 and are all connected to the sampling tube 31. In the sampling state, water samples at different heights within the filter chamber 12 are extracted using a suction device such as a vacuum pump 32 or a peristaltic pump. This not only increases the sampling coverage area of ​​the sampling tube 31 within the filter chamber 12, making the sampling distribution more uniform, but also reduces the risk of single-channel blockage.

[0050] In one example, the bifurcation tube 311 has a first end 3111 and a second end 3112 disposed opposite to each other, the first end 3111 being connected to the sampling tube 31, and the diameter of the bifurcation tube 311 gradually decreasing from the first end 3111 to the second end 3112.

[0051] like Figure 1 As shown, the bifurcation tube 311 is located inside the filter chamber 12. The top of the bifurcation tube 311 is connected to the sampling tube 31, and the bottom extends away from the sampling tube 31 to draw water samples from the filter chamber 12.

[0052] The top of the bifurcation pipe 311 is the first end 3111, and the bottom is the second end 3112. The bifurcation pipe 311 is a reducing pipe, with the diameter of the bottom of the bifurcation pipe 311 being smaller than the diameter of the top. By setting the bifurcation pipe 311 as a reducing pipe, the aeration filter device not only effectively reduces the impact damage of the internal air pressure of the aeration filter head on the sampling pipe 31, sampling valve 33, and peristaltic pump during aeration, but also prevents larger particles from entering the sampling pipe 31 through the bifurcation pipe 311 and causing damage to components such as the vacuum pump 32 in the event of damage to the filter section.

[0053] In one example, the aeration assembly 2 further includes a blower 22, which is connected to the aeration pipe 21.

[0054] like Figure 1 As shown, the blower 22 is connected to the filter element 11 through the aeration pipe 21. In the aeration state, the blower 22 is started and blows air into the filter chamber 12 through the aeration pipe 21. The gas is broken into small bubbles through the air holes of the diamond filter element 11 to aerate the external water sample. At the same time, it impacts the impurities attached to the filter element 11, so that the filter element 11 can achieve self-cleaning.

[0055] In the sampling state, the fan 22 is in the off state or stopped running state, so that the air pressure in the filter chamber 12 can be reduced by the sampling component 3, so that the external water sample can enter the filter chamber 12 through the air hole of the filter element 11 for the sampling component 3 to extract the sample.

[0056] In one example, the nitrifying bacteria early warning aeration filtration device further includes an aeration valve 23 and a sampling valve 33. The two ends of the aeration valve 23 are respectively connected to the aeration pipe 21 and the blower 22, and the aeration valve 23 is used to control the opening and closing of the air path. The two ends of the sampling valve 33 are respectively connected to the sampling pipe 31 and the vacuum pump 32, and the sampling valve 33 is used to control the opening and closing of the sampling liquid path. The aeration valve 23 and the sampling valve 33 are signal-connected to the central controller and are controlled in conjunction with the central controller.

[0057] like Figure 1As shown, the two ends of the aeration valve 23 are connected to the aeration pipe 21 and the blower 22, respectively. The aeration valve 23 controls the opening and closing of the air path. For example, when nitrifying bacteria are detected, the reactor needs to be aerated through the ammonia nitrogen filter element 11. At this time, the aeration valve 23 is open, and the sampling component 3 is stopped. The blower 22 starts working, blowing gas into the filter chamber 12 through the aeration pipe 21, and aerating the gas into small bubbles through the air holes of the filter element 11.

[0058] like Figure 1 As shown, the two ends of the sampling valve 33 are connected to the sampling tube 31 and the vacuum pump 32 respectively, and the sampling liquid path is opened and closed by the sampling valve 33.

[0059] For example, when sampling is performed after aeration by aeration component 2, aeration valve 23 is closed, sampling valve 33 is opened, vacuum pump 32 starts working, and blower 22 is stopped. Vacuum pump 32 creates negative pressure in filter chamber 12 through sampling tube 31. External water sample enters the bottom of filter chamber 12 after being filtered by filter element 11, and is evenly pumped from the bottom of filter chamber 12 to the downstream monitoring instrument for monitoring through sampling tube 31. After sampling is completed, vacuum pump 32 rotates in reverse, pushing the residual liquid in sampling tube 31 back into filter chamber 12. Then, vacuum pump 32 stops working, and aeration valve 23 is closed.

[0060] The aeration and filtration device is switched to aeration mode again, requiring aeration of the reactor through the ammonia nitrogen filter element 11. The aeration valve 23 is opened, the sampling valve 33 is closed, the blower 22 starts working, and the vacuum pump 32 is stopped. The blower 22 blows gas into the filter chamber 12 of the filter element 11 through the aeration pipe 21, and disperses the gas into small bubbles through the air holes of the filter element 11 to aerate the external water sample. At the same time, the residual liquid and gas in the filter chamber 12 mix together to wash away the impurities attached to the outer wall of the filter element 11 during the previous sampling.

[0061] The aeration and filtration device switches to sampling mode again. Aeration valve 23 closes, sampling valve 33 opens, vacuum pump 32 starts working, and blower 22 stops working. Vacuum pump 32 creates negative pressure in filter chamber 12 through sampling pipe 31 and branch pipe 311. External water sample enters filter chamber 12 after being filtered by filter element 11, and is evenly pumped from filter chamber 12 to downstream monitoring instrument through branch pipe 311 and sampling pipe 311 for monitoring. After sampling, vacuum pump 32 rotates in reverse, pushing the residual liquid in sampling pipe 311 and branch pipe 311 back into filter chamber 12. Then vacuum pump 32 stops working, and aeration valve 23 closes.

[0062] Furthermore, the aeration and sampling states of the aeration filtration device are switched sequentially, making full use of the porous material of the filter element 11 to automatically aerate and automatically sample and filter the wastewater being tested. This enables the aeration filtration device to achieve self-cleaning and self-maintenance, while also achieving continuous high-efficiency aeration and filtration capabilities.

[0063] Aeration valve 23 and sampling valve 33 are connected to the central controller via signal and are controlled in conjunction with the central controller.

[0064] It also includes a multi-port pipe 4, and the filter element 11, the aeration assembly 2 and the sampling assembly 3 are respectively connected to the multi-port pipe 4;

[0065] The filter element 11 and the aeration assembly 2 are located at opposite ends of the multi-port pipe 4.

[0066] In one example, the nitrifying bacteria early warning aeration and filtration device further includes a multi-port pipe 4, wherein the filter element 11, the aeration assembly 2 and the sampling assembly 3 are respectively connected to the multi-port pipe 4; wherein the filter element 11 and the aeration assembly 2 are located at opposite ends of the multi-port pipe 4.

[0067] like Figure 1 As shown, the multi-port pipe 4 is a three-way pipe. The filter element 11, the aeration assembly 2, and the sampling assembly 3 are connected through the three-way pipe. By setting the filter element 11 and the aeration assembly 2 opposite to each other, the gas can pass through the sampling assembly 3 and reach the filter element 11 in the aeration state, so that the gas path can coincide with the local sampling liquid path, and the area through which the water sample in the filter element 11 flows can be thoroughly cleaned.

[0068] The first end 3111 of the three-way pipe is connected to the filter chamber 12. One end of the aeration pipe 21 passes through the second end 3112 of the three-way pipe and is connected to the filter chamber 12, and the other end of the aeration pipe 21 is connected to the blower 22 through the aeration valve 23. One end of the sampling pipe 31 extends out of the third end of the three-way pipe and is connected to the vacuum pump 32 through the sampling valve 33.

[0069] In one example, the filter element 11 has an opening 111, at which a connecting pipe 13 is provided. The connecting pipe 13 is connected to the multi-port pipe 4. Sealing plates 14 are provided at the other ends of the multi-port pipe 4. The multi-port pipe 4, the connecting pipe 13 and the filter chamber 12 are connected to form a sealed chamber.

[0070] like Figure 1 As shown, the filter element 11 is frustum-shaped. An opening 111 is provided at the top of the filter element 11, and a connecting pipe 13 is installed at the opening 111, which is connected to the filter chamber 12.

[0071] The tee pipe is connected to the filter chamber 12 via the connecting pipe 13. The connecting pipe 13 and the tee pipe can be connected by means of interference fit, threaded connection, etc.

[0072] The other two ports of the three-way pipe are connected to the aeration pipe 21 and the sampling pipe 31 respectively, thereby connecting the aeration component 2, the sampling component 3 and the filter element 11.

[0073] The ports of the multi-port pipe 4 that connect to the aeration pipe 21 and the sampling pipe 31 are all equipped with sealing plates 14. By setting the sealing plates 14, the three-way pipe, the connecting pipe 13 and the filter chamber 12 form a sealed chamber, thereby improving the sampling and aeration effect of the aeration and filtration device.

[0074] In one example, the filter element 11 is spherical, conical, or rectangular in shape; and / or the branch tube 311 has a circular, square, or polygonal cross-section.

[0075] like Figures 1 to 4 As shown, depending on the aeration environment and filtration conditions, the filter element 11 can be a conical, spherical, or rectangular structure.

[0076] In this embodiment, the bifurcation pipe 311 is a variable diameter pipe, and its cross-section can be circular, square, or polygonal to meet different sampling methods.

[0077] According to another embodiment of this application, a sewage pipe network is provided, which includes a central controller and an aeration and filtration device for nitrifying bacteria early warning as described above, wherein the central controller is signal-connected to the aeration component 2 and the sampling component 3.

[0078] This nitrifying bacteria early warning aeration and filtration device is suitable for sewage pipe networks. It controls the aeration valve 23 and the sampling valve 33 through a central controller, allowing the aeration and filtration device to switch between aeration and sampling states. It makes full use of the pores of the filter element 11 to automatically aerate and automatically sample and filter the wastewater being tested. This not only enables the aeration and filtration device to achieve self-cleaning and self-maintenance, effectively reducing workload, but also achieves continuous high-efficiency aeration and filtration capabilities.

[0079] While specific embodiments of this application have been described in detail by way of examples, those skilled in the art should understand that the above examples are for illustrative purposes only and are not intended to limit the scope of this application. Those skilled in the art should understand that modifications can be made to the above embodiments without departing from the scope and spirit of this application. The scope of this application is defined by the appended claims.

Claims

1. An aeration filtration device for early warning of nitrifying bacteria, characterized in that, include: A filter assembly (1) includes a filter element (11) made of diamond material. The filter element (11) has pores and a filter chamber (12). The pores are connected to the outside of the filter chamber (12) and the filter element (11). An aeration assembly (2) includes an aeration pipe (21) that is connected to an air source and is connected to the filter chamber (12). The sampling assembly (3) includes a sampling tube (31) communicating with the filter chamber (12) and a vacuum pump (32) disposed on the sampling tube (31).

2. The aeration and filtration device for nitrifying bacteria early warning according to claim 1, characterized in that, The sampling tube (31) has a bifurcation structure on the side near the filter cavity (12). The bifurcation structure includes at least two bifurcation tubes (311). The bifurcation tubes (311) are located in the filter cavity (12) and are connected to the sampling tube (31). The bifurcation tubes (311) are evenly distributed around the sampling tube (31).

3. The aeration and filtration device for nitrifying bacteria early warning according to claim 2, characterized in that, The bifurcation structure is multiple, and the multiple bifurcation structures are evenly distributed along the axial direction of the sampling tube (31).

4. The aeration and filtration device for nitrifying bacteria early warning according to claim 2, characterized in that, The bifurcation tube (311) has a first end (3111) and a second end (3112) arranged opposite to each other. The first end (3111) is connected to the sampling tube (31), and the diameter of the bifurcation tube (311) gradually decreases from the first end (3111) to the second end (3112).

5. The aeration and filtration device for nitrifying bacteria early warning according to claim 1, characterized in that, The aeration assembly (2) also includes a blower (22), which is connected to the aeration pipe (21).

6. The aeration and filtration device for nitrifying bacteria early warning according to claim 5, characterized in that, Also includes: An aeration valve (23) is provided, with its two ends connected to the blower (22) and the aeration pipe (21) respectively. The aeration valve (23) is used to control the opening and closing of the air passage. The sampling valve (33) is connected at both ends to the sampling tube (31) and the vacuum pump (32) respectively. The sampling valve (33) is used to control the opening and closing of the sampling liquid path. The aeration valve (23) and the sampling valve (33) are connected to the central controller and are controlled in conjunction with the central controller.

7. The aeration and filtration device for nitrifying bacteria early warning according to claim 1, characterized in that, It also includes a multi-port pipe (4), wherein the filter element (11), the aeration assembly (2) and the sampling assembly (3) are respectively connected to the multi-port pipe (4); The filter element (11) and the aeration assembly (2) are located at opposite ends of the multi-port pipe (4).

8. The aeration and filtration device for nitrifying bacteria early warning according to claim 7, characterized in that, The filter element (11) has an opening (111), and a connecting pipe (13) is provided at the opening (111). The connecting pipe (13) is connected to the multi-port pipe (4). Sealing plates (14) are provided at the other ends of the multi-port pipe (4). The multi-port pipe (4), the connecting pipe (13), and the filter chamber (12) are connected to form a sealed chamber.

9. The aeration and filtration device for nitrifying bacteria early warning according to claim 2, characterized in that, The filter element (11) is spherical, conical, or rectangular in shape; and / or The cross-section of the bifurcation tube (311) is circular, square, or polygonal.

10. A sewage pipe network, characterized in that, The device includes a central controller and an aeration and filtration device for nitrifying bacteria early warning as described in any one of claims 1-9, wherein the central controller is signal-connected to the aeration component (2) and the sampling component (3).

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