Method for removing sludge and microorganisms from a pipeline and pipeline cleaning system

Abstract

The application discloses a method for removing sludge and microorganisms in a pipeline, and a pipeline cleaning system. The pipeline comprises a pipeline body, and an inner lining layer is arranged on the inner wall of the pipeline body to control the cross-sectional area of sewage flow. The inner lining layer comprises a fixed part and a movable part. Valves are arranged at both ends of the pipeline to control the pressure between the movable part and the inner wall of the pipeline body, and the valves are connected to a pressure gauge. The method comprises the following steps: S1, injecting pressure into the movable part through the valve to make the movable part reach a preset position, and the value of the pressure gauge at this time is a standard value of the injected pressure; S2, closing the valve at one end of the pipeline, injecting pressure into the valve at the other end of the pipeline, and stopping the injection of pressure when the value of the pressure gauge reaches the standard value, so that the movable part is kept at the preset position; and S3, opening the valves at both ends of the pipeline to release the pressure, and the movable part gradually approaches the inner wall of the pipeline.

Description

Technical Field

[0001] The present invention relates to the technical field of pipeline cleaning, and more particularly to a method for removing pipeline sludge and microorganisms and a pipeline cleaning system. Background Art

[0002] The urban drainage pipe system is an important part of urban infrastructure. When sewage stays in the pipe for a long time, an anaerobic environment will form in the pipe. In this way, a large number of anaerobic biofilms will grow in the sludge at the bottom of the sewage pipe and on the walls of the sewage pipe. The anaerobic microorganisms will produce a large amount of hydrogen sulfide gas in the drainage pipe. At room temperature, hydrogen sulfide is a colorless and highly toxic gas with the smell of rotten eggs, which poses a threat to the human body, the urban environment and the life of the pipe.

[0003] The existing technologies for controlling harmful gases in sewage pipes include adding chemicals, aeration, etc. Sewage pipe dredging is a large-scale project, and common methods include pipeline robots, winches, and high-pressure water jet dredging. Technologies for controlling harmful gases in sewage pipes often consume a lot of energy and chemicals, lack long-term control effects, and have a negative impact on downstream sewage treatment. Sewage pipe dredging requires a lot of manpower and financial resources, is not convenient enough, and has an insufficient degree of automation. Existing technologies for dredging sewage pipes and improving the status of harmful gases in pipes usually require the combined use of multiple technologies. There are generally disadvantages such as excessive unit pipeline cleaning work volume, high water consumption, and high use of chemicals, a large impact on node and terminal sewage treatment systems, and great damage to pipes.

[0004] In summary, how to provide a simple, practical, and environmentally friendly method for removing pipeline sludge and microorganisms is an urgent problem to be solved by those skilled in the art. Summary of the Invention

[0005] In view of this, the purpose of the present invention is to provide a method for removing pipeline sludge and microorganisms and a pipeline cleaning system. Using this method and the cleaning system can reduce the waste of resources and pollution to the environment while removing pipeline sludge and microorganisms.

[0006] In order to achieve the above object, the present invention provides the following technical solutions:

[0007] A method for removing sludge and microorganisms from a pipeline, the pipeline comprising a pipeline body, the inner wall of the pipeline body being provided with an inner lining layer for controlling the cross-sectional area of ​​sewage flow, the portion of the inner lining layer fixed relative to the inner wall being referred to as a fixed portion, and the portion of the inner lining layer movable relative to the inner wall being referred to as a movable portion, valves being provided at both ends of the pipeline for controlling the pressure between the movable portion and the inner wall of the pipeline body, the valves being connected to a pressure gauge, the pressure gauge displaying the pressure value of the movable portion;

[0008] The method for removing pipeline sludge and microorganisms comprises the following steps:

[0009] S1, injecting pressure into the movable part through the valve, so that the movable part reaches a preset position, at which time the value of the pressure gauge is the standard value of the injection pressure;

[0010] S2, closing the valve at one end of the pipeline, injecting pressure into the valve at the other end of the pipeline, and stopping the pressure injection when the value of the pressure gauge reaches the standard value, so that the movable part remains in the preset position;

[0011] S3, opening the valves at both ends of the pipeline to release pressure, and the movable part gradually approaches the inner wall of the pipeline.

[0012] A method for removing sludge and microorganisms from a pipeline, wherein the injection pressure includes hydraulic injection pressure, during which the valve is connected to a water inlet pipe; and the injection pressure also includes gas injection pressure, during which the valve is connected to an air compressor.

[0013] A method for removing sludge and microorganisms from a pipeline comprises injecting water into the inner lining layer to remove sludge.

[0014] A method for removing sludge and microorganisms from a pipeline, which includes, before step S1, cleaning the valve and checking the pressure gauge. If the valve is connected to the movable part and the pressure gauge shows normal, then step S1 is entered.

[0015] A method for removing sludge and microorganisms from a pipeline, wherein step S2 further comprises: opening detection wells at both ends of the pipeline, and when pressure injection begins, continuing pressure injection when it is determined by the detection wells that the movable part and the pipeline are sealed.

[0016] A method for removing sludge and microorganisms from a pipeline, which includes, before step S3: when it is determined according to the detection well that the sludge cleaning degree in the pipeline has reached a preset effect, entering step S3.

[0017] A pipeline cleaning system for implementing any of the above-mentioned methods for removing pipeline sludge and microorganisms, the pipeline cleaning system comprising a pipeline body, an inner lining layer, a valve, a pressure gauge, a water inlet pipe and / or an air compressor, the inner lining layer being arranged on the inner wall of the pipeline body, the inner lining layer comprising a fixed portion and a movable portion, the pressure gauge being connected to the valve pipeline, the valves being respectively arranged at both ends of the pipeline body, when the valve at one end is pressurized and the valve at the other end is closed, the movable portion is away from the inner wall of the pipeline body, and the valve pipeline for pressurization is connected to the water inlet pipe and / or the air compressor.

[0018] A pipeline cleaning system, when the inner lining layer is connected to an external water source and uses the external water source to clean sludge, the movable part is arranged at the bottom of the pipeline body; when the inner lining layer cleans the biofilm on the top of the pipe, the movable part is arranged at the top of the pipeline body.

[0019] A pipeline cleaning system, when the inner lining layer uses sewage to clean sludge, the movable part is arranged on the left or right side of the pipeline body; when the inner lining layer cleans the biofilm on the top of the pipe, the movable part is arranged on the top of the pipeline body.

[0020] A pipeline cleaning system, wherein the surface of the lining layer in contact with sewage is subjected to anti-corrosion treatment.

[0021] Compared with the background technology, the method for removing sludge and microorganisms from a pipeline provided by the present invention comprises a pipeline body, the inner wall of the pipeline body is provided with an inner lining layer for controlling the cross-sectional area of ​​sewage circulation, the part of the inner lining layer fixed relative to the inner wall is called a fixed part, and the part of the inner lining layer movable relative to the inner wall is called a movable part. Valves for controlling the pressure between the movable part and the inner wall of the pipeline body are provided at both ends of the pipeline, and the valves are connected to a pressure gauge, which displays the pressure value of the movable part. The steps of the method for removing sludge and microorganisms from a pipeline include: S1, injecting pressure into the movable part through the valve to make the movable part reach a preset position, at which time the value of the pressure gauge is the standard value of the injection pressure; S2, closing the valve at one end of the pipeline, injecting pressure into the valve at the other end of the pipeline, and when the value of the pressure gauge reaches the standard value, stopping the pressure injection to keep the movable part at the preset position; S3, opening the valves at both ends of the pipeline to release the pressure, and the movable part gradually approaches the inner wall of the pipeline.

[0022] Sewage flows within the liner. When it's necessary to remove sludge and microorganisms from the pipe, pressure is injected between the liner and the pipe's inner wall through a valve, causing the liner's active portion to move away from the pipe's inner wall. This changes the cross-sectional area of ​​the pipe through which the sewage flows, thereby altering the flow rate. Because the active portion rises, the pipe's cross-sectional area decreases. Under the same flow rate, the sewage's flow rate increases, increasing the flushing of sludge and microorganisms within the pipe. This also disrupts the sludge deposits and the inherent structure of the biofilm, resulting in better sludge and biofilm removal within the pipe.

[0023] In addition, the present application also provides a pipeline cleaning system, including a pipeline body, an inner lining layer, a valve, a pressure gauge, a water inlet pipe and / or an air compressor. The inner lining layer is arranged on the inner wall of the pipeline body, and the inner lining layer includes a fixed part and a movable part. The pressure gauge and the valve pipeline are connected. The valves are respectively arranged at both ends of the pipeline body. When the valve at one end is pressurized and the valve at the other end is closed, the movable part is away from the inner wall of the pipeline body, and the valve pipeline used for pressure injection is connected to the water inlet pipe and / or air compressor.

[0024] The pipeline cleaning system is connected to the water inlet pipe or air compressor through a valve, injects pressure into the active part of the inner lining, changes the area of ​​the pipeline cross-section, and uses the flow rate of sewage and the impact force of the sewage's own flow rate to achieve the effect of removing silt and biofilm in the pipeline. It can save resources, reduce environmental pollution, and has good processability and economy. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0026] Figure 1 A flow chart of the method for removing sludge and microorganisms from pipelines provided by the present invention;

[0027] Figure 2 A structural diagram of the pipeline cleaning system provided by the present invention;

[0028] Figure 3 This is a schematic diagram of the movable portion provided by the present invention being located on the left side of the pipe body;

[0029] Figure 4 This is a schematic diagram of the movable portion provided by the present invention being located on the right side of the pipe body;

[0030] Figure 5 This is a schematic diagram of the movable portion provided by the present invention being located on the top of the pipe body;

[0031] Figure 6 This is a schematic diagram of the movable part provided by the present invention contacting the inner wall of the pipe body after pressure relief.

[0032] in:

[0033] 1-Pipeline body, 2-Inner lining, 21-Fixed part, 22-Moving part, 3-Valve, 4-Pressure gauge, 5-Sewage, 6-Sludge. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0035] In order to enable those skilled in the art to better understand the solutions of the present invention, the present invention is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0036] The method for removing pipe sludge and microorganisms provided in the embodiment of the present application can be referred to the attached manual. Figure 1 To the attached Figure 5 The pipeline includes a pipeline body 1. The inner wall of the pipeline body 1 is provided with an inner lining layer 2 for controlling the cross-sectional area of ​​sewage flow. The portion of the inner lining layer 2 fixed relative to the inner wall is called a fixed portion 21, and the portion of the inner lining layer 2 movable relative to the inner wall is called a movable portion 22. Valves 3 are provided at both ends of the pipeline to control the pressure between the movable portion 22 and the inner wall of the pipeline body 1. The valve 3 is connected to a pressure gauge 4, which displays the pressure value of the movable portion 22.

[0037] The method for removing pipe sludge and microorganisms includes the following steps:

[0038] S1, inject pressure into the movable part 22 through the valve 3, so that the movable part 22 reaches the preset position. At this time, the value of the pressure gauge 4 is the standard value of the injection pressure;

[0039] S2, close the valve 3 at one end of the pipeline, and inject pressure into the valve 3 at the other end of the pipeline. When the value of the pressure gauge 4 reaches the standard value, stop injecting pressure to keep the movable part 22 in the preset position;

[0040] S3, the valves 3 at both ends of the pipeline are opened to release the pressure, and the movable part 22 gradually approaches the inner wall of the pipeline.

[0041] It should be noted that step S1 is the pressure test process. The pressure test involves recording the value of the pressure gauge 4 and the pressure-bearing capacity of the movable portion 22 during the gradual pressure increase. When the movable portion 22 reaches a level that allows it to withstand the pressure of the pipeline water flow, that is, just after the movable portion 22 reaches the preset position, the pressure gauge 4 reading is recorded and used as the reference value for the injection pressure. The purpose of the pressure test is to find the minimum pressure that can withstand the pressure of the water flow in the pipeline. Pressure is then injected into the movable portion 22, and the injection pressure is turned off after the reference value for the test pressure is reached.

[0042] Step S2 is the process of injecting pressure into the movable part 22. Before injecting pressure into the valve 3, the valve 3 at the other end of the pipeline needs to be closed to prevent the valve 3 on the opposite side from releasing pressure during injection. After the pressure in the movable part 22 reaches the standard value, the injection is stopped. At this time, the movable part 22 always remains in the preset position. The movable part 22 moves toward the center of the inner wall, squeezing and supporting the sewage 5 in the lining layer 2, and the flow area of ​​the sewage 5 is reduced. According to the formula Q (flow) = V (flow velocity) × A (flow area), it can be seen that when the flow area A becomes smaller, the flow velocity V will become larger when the flow Q remains unchanged. The embodiment of the present application is based on experimental data. When the pipeline is divided into four equal parts according to the circumference, one quarter of it is set as the separation area. After pressurization, the pipeline cross-section is reduced by 31% and the pipeline flow velocity is increased by 1.44 times. According to computational fluid dynamics (CFD) simulations, when the flow velocity of sewage 5 at the center of the pipe is 0.45 m / s, it decreases to 0.55 m / s after the movable portion 22 reaches the predetermined position in the pipe. This increases the flow velocity within the pipe. Therefore, when the flow rate of sewage 5 is low, the method provided in this application can reduce the pipe area, increase the flow rate, and prevent the accumulation of sludge 6.

[0043] Step S2 is the process of valve 3 releasing pressure. When the pipeline is cleaned, open the valves 3 at both ends of the pipeline, and the movable part 22 automatically releases pressure. Figure 5 As shown, the movable portion 22 returns to the state of contacting the inner wall of the pipe body 1, and the cross-sectional shape of the pipe is restored.

[0044] The pressure injection includes hydraulic pressure injection, during which the valve 3 is connected to the water inlet pipe; the pressure injection also includes gas pressure injection, during which the valve 3 is connected to the air compressor.

[0045] Hydraulic pressure injection involves closing valve 3 on one side of the pipeline and injecting water through the pressure valve on the opposite side. When pressure gauge 4 reaches the specified reading, valve 3 is closed, and pressure injection is complete. Gas pressure injection involves connecting the air compressor pressure line to valve 3, closing valve 3 on the other end of the pipeline, and closely monitoring the pressure gauge 4 reading as pressurized air is injected. Once the reading reaches the set standard, the air compressor is shut down and valve 3 is closed. Both hydraulic and gas pressure injections are equally effective in clearing pipelines; choose either method based on your specific needs.

[0046] As the instruction manual Figure 2As shown, the method for removing pipe sludge and microorganisms includes injecting water into the inner lining 2 to remove silt. Water injection can be used to remove silt if a clean water source is available near the pipe. The movable portion 22 for this purpose is located at the bottom of the inner wall of the pipe body 1. After injection, the movable portion 22 bulges upward. It should be noted that the location of the movable portion 22 at the bottom of the inner wall of the pipe body 1 is not suitable for flushing and desilting using the flow rate of the existing sewage 5 in the pipe after the pipe is bulged. This is because the bulging of the lower pipe side may cause water backflow upstream, leading to overflow of the upstream manhole.

[0047] When silting the inner lining 2 without adding any water and using the original pipeline design flow, use the method shown in the attached manual. Figure 3 To the attached Figure 4 The movable portion 22 is shown positioned on the left or right side of the pipe body 1. This prevents water from backing up upstream and allows the biofilm at the air-water interface on the sidewall to be flushed, thereby changing the living conditions of the organisms and creating an anaerobic and anoxic environment. When cleaning biofilm microorganisms on the pipe top, the movable portion 22 can be positioned above the pipe body 1.

[0048] Before step S1 , the process also includes: cleaning the valve 3 , checking the pressure gauge 4 , and if the valve 3 is connected to the movable part 21 and the pressure gauge 4 shows normal, then the process proceeds to step S1 .

[0049] After a pipeline has been in use for an extended period, or when excessive levels of hydrogen sulfide or methane are detected in the pipeline, the method provided in this application for removing pipeline sludge and microorganisms can be used for desilting. Before performing pressurization operations, the pressure gauge 4 should be checked and the pressurization valve 3 should be cleaned to prevent contaminants in the inspection well from clogging the valve 3.

[0050] Step S2 also includes: opening the detection wells at both ends of the pipeline, and when the injection pressure starts, if it is determined based on the detection wells that the movable part 22 and the pipeline are sealed, the injection pressure is continued.

[0051] Opening the inspection wells at both ends of the pipeline can relieve pressure after a pipe burst due to excessive pressure during the injection process, and can release harmful gases in the pipe in advance. It is also convenient for observing the injection and pipeline dredging conditions. Before injection, after a slight injection, injection can be started when it is observed that there is no leakage in the pipeline.

[0052] Before step S3, the process also includes: when it is determined according to the detection well that the cleaning degree of the silt 6 in the pipeline has reached a preset effect, then entering step S3.

[0053] After the desilting work is completed through the inspection well, the pressure can be released, as shown in the attached manual. Figure 5 As shown, the movable portion 22 returns to the original cross-section of the pipeline. After opening the valves 3 on both sides, the pressure is automatically released. When the gas injection pressure is selected, the air can automatically flow out. When the hydraulic injection pressure is selected, the water flow will automatically flow out because the pipeline has a slope.

[0054] The pipe cleaning system provided in the embodiment of the present application can be found in the attached manual. Figure 1 To the attached Figure 5 , used to implement the above-mentioned method for removing pipeline sludge and microorganisms, the pipeline cleaning system includes a pipeline body 1, an inner lining layer 2, a valve 3, a pressure gauge 4, a water inlet pipe and / or an air compressor, the inner lining layer 2 is arranged on the inner wall of the pipeline body 1, the inner lining layer 2 includes a fixed part 21 and a movable part 22, the pressure gauge 4 and the valve 3 are connected by pipeline, and the valves 3 are respectively arranged at both ends of the pipeline body 1. When pressure is injected into the valve 3 at one end and the valve 3 at the other end is closed, the movable part 22 is away from the inner wall of the pipeline body 1, and the valve pipeline used for pressure injection is connected to the water inlet pipe and / or the air compressor.

[0055] When air pressure injection is selected, the valve 3 pipeline is connected to the air compressor. When hydraulic pressure injection is selected, the valve 3 pipeline is connected to the water inlet pipe. The pipeline cleaning system uses pressure injection into the movable portion 22 to change the pipeline cross-section, thereby increasing the water flow velocity and enhancing the scouring force of the water flow. The raised movable portion 22 can also destroy the inherent structure of silt 6 and the biofilm at the interface between the air and water surface on the side wall, making it easier for the water flow to remove the silt 6 and biofilm.

[0056] As the instruction manual Figure 2 and attached Figure 5 As shown, when the inner lining layer 2 is connected to an external water source to clean the sludge 6, the movable part 22 is located at the bottom of the pipe body 1; when the inner lining layer 2 is used to clean the biofilm on the top of the pipe, the movable part 22 is located at the top of the pipe body 1.

[0057] The movable portion 22 is located at the bottom of the pipe body 1. When pressure is applied to the movable portion 22, it rises upward. If the sewage 5 flows slowly, this can easily cause water backflow upstream, leading to overflow of the upstream manhole. Therefore, to prevent this, a water source is connected to the inner liner 2 to increase the water flow rate. When the inner liner 2 needs to clean the biofilm on the pipe top, the movable portion 22 is located at the top of the pipe body 1, and the external water source and sewage 5 are connected to clean and flush the biofilm.

[0058] As the instruction manual Figure 3 To the attached Figure 5 As shown, when the lining layer 2 uses sewage 5 to clean sludge 6, the movable part 22 is located on the left or right side of the pipe body 1; when the lining layer 2 cleans the biofilm on the top of the pipe, the movable part 22 is located on the top of the pipe body 1.

[0059] When desilting using the original pipeline design flow rate without adding additional water, the movable portion 22 is positioned on the left or right side of the pipeline body 1. This prevents upstream backwatering and flushes away biofilm and sludge 6 at the air-water interface on the sidewalls, improving the biological habitat and creating an anaerobic and anoxic environment. When the inner liner 2 requires cleaning of biofilm on the top of the pipe, the movable portion 22 is positioned at the top of the pipeline body 1, using sewage 5 to flush and clean the biofilm.

[0060] The surface of the lining layer 2 in contact with the sewage 5 is subjected to anti-corrosion treatment. Since the surface of the lining layer 2 is in direct contact with the sewage 5, in order to increase the service life of the lining layer 2, the inner wall of the lining layer 2 needs to be subjected to anti-fouling and anti-corrosion treatment.

[0061] After a pipeline has been used for a long time, or when excessive levels of hydrogen sulfide or methane are detected in the pipeline, the process of desilting the pipeline using the pipeline cleaning system provided in this application is as follows:

[0062] Step S11, clean the valve 3 and check the pressure gauge 4. If the valve 3 is connected to the movable part 22 and the pressure gauge 4 shows normal, then go to step S1;

[0063] Step S1, inject pressure into the movable part 22 through the valve 3, so that the movable part 22 reaches the preset position. At this time, the value of the pressure gauge 4 is the standard value of the injection pressure. After recording the standard value, the process proceeds to step S21;

[0064] Step S21, opening the detection wells at both ends of the pipeline. When the injection pressure starts, if the seal between the movable part 22 and the pipeline is determined according to the detection wells, then proceed to step S2;

[0065] Step S2, closing the valve 3 at one end of the pipeline and injecting pressure into the valve 3 at the other end of the pipeline. When the value of the pressure gauge 4 reaches the standard value, the injection of pressure is stopped to keep the movable part 22 at the preset position;

[0066] Step S31: When the sludge cleaning degree in the pipeline is judged to have reached the preset effect according to the detection well, the process proceeds to step S3;

[0067] Step S3, opening the valves 3 at both ends of the pipeline to release the pressure, and the movable part 22 gradually approaches the inner wall of the pipeline, completing the pipeline desilting.

[0068] The above describes in detail the method for removing pipe sludge and microorganisms and the pipe cleaning system provided by the present application. Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only intended to help understand the method and core concept of the present application. It should be noted that, for those skilled in the art, various improvements and modifications may be made to the present application without departing from the principles of the present application, and such improvements and modifications also fall within the scope of protection of the claims of the present application.

Claims

1. A method for removing pipeline sludge and microorganisms, characterized in that: The pipeline includes a pipeline body, the inner wall of which is provided with an inner lining layer for controlling the cross-sectional area of ​​sewage circulation, the portion of the inner lining layer fixed relative to the inner wall being referred to as a fixed portion, and the portion of the inner lining layer movable relative to the inner wall being referred to as a movable portion, valves for controlling the pressure between the movable portion and the inner wall of the pipeline body being provided at both ends of the pipeline, the valves being connected to a pressure gauge, the pressure gauge displaying the pressure value of the movable portion, and when the inner lining layer is connected to an external water source for cleaning sludge, the movable portion is provided at the bottom or side of the pipeline body; when the inner lining layer is used for cleaning biofilm on the pipe top, the movable portion is provided at the top of the pipeline body; The method for removing pipeline sludge and microorganisms comprises the following steps: S1, injecting pressure into the movable part through the valve, so that the movable part reaches a preset position, at which time the value of the pressure gauge is the standard value of the injection pressure; S2, closing the valve at one end of the pipeline, injecting pressure into the valve at the other end of the pipeline, and stopping the pressure injection when the value of the pressure gauge reaches the standard value, so that the movable part remains in the preset position; S3, opening the valves at both ends of the pipeline to release pressure, and the movable part gradually approaches the inner wall of the pipeline.

2. The method for removing pipeline sludge and microorganisms according to claim 1, characterized in that: The injection pressure includes hydraulic injection pressure, during which the valve is connected to the water inlet pipe; the injection pressure also includes gas injection pressure, during which the valve is connected to the air compressor.

3. The method for removing pipeline sludge and microorganisms according to claim 1, characterized in that: The method comprises injecting water into the inner lining layer to remove dredging.

4. The method for removing pipeline sludge and microorganisms according to claim 1, characterized in that: Before step S1, the method further includes: cleaning the valve and checking the pressure gauge. If the valve is connected to the movable part and the pressure gauge shows normal, the method proceeds to step S1.

5. The method for removing pipeline sludge and microorganisms according to claim 1, characterized in that: The step S2 further includes: opening the detection wells at both ends of the pipeline, and when the injection pressure starts, if it is determined by the detection wells that the movable part and the pipeline are sealed, continuing the injection pressure.

6. The method for removing pipeline sludge and microorganisms according to claim 5, characterized in that: Before step S3, the method further includes: when it is determined according to the detection well that the silt cleaning degree in the pipeline reaches a preset effect, entering step S3.

7. A pipeline cleaning system for implementing the method for removing pipeline sludge and microorganisms according to any one of claims 1 to 6, characterized in that: The pipeline cleaning system includes a pipeline body, an inner lining layer, a valve, a pressure gauge, a water inlet pipe and an air compressor. The inner lining layer is arranged on the inner wall of the pipeline body. The inner lining layer includes a fixed part and a movable part. The pressure gauge is connected to the valve pipeline. The valves are respectively arranged at both ends of the pipeline body. When the valve at one end is pressurized and the valve at the other end is closed, the movable part is away from the inner wall of the pipeline body. The valve pipeline used for pressure injection is connected to the water inlet pipe and the air compressor.

8. The pipeline cleaning system according to claim 7, characterized in that: When the inner lining layer uses sewage to clean sludge, the movable part is arranged on the left or right side of the pipe body; when the inner lining layer cleans the biofilm on the top of the pipe, the movable part is arranged on the top of the pipe body.

9. The pipeline cleaning system according to claim 7, characterized in that: The surface of the lining layer in contact with sewage is subjected to anti-corrosion treatment.

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