Zero-emission industrial wastewater treatment system and treatment method

Abstract

The invention relates to a zero-emission industrial wastewater treatment system and method, and relates to the field of industrial wastewater treatment, in particular to a zero-emission industrial wastewater treatment system and method, and the zero-emission industrial wastewater treatment system comprises a sedimentation tank, a mud water pump, a mud water pipe and a flexible filter screen cylinder connected to a mounting frame. The upper clamping assembly and the lower clamping assembly are used for clamping and closing part of the filter screen cylinder, so that switching of the main filter section and the auxiliary filter section is realized, and efficient filtering and discharging of sludge are completed in cooperation with structures such as a backwashing spray head, a sludge conveying track and a sludge receiving hopper box. The technical effects that the filtering efficiency is improved, sludge residues are reduced, and zero emission of industrial wastewater is achieved are achieved.

Description

Technical Field

[0001] The present application relates to the technical field of wastewater treatment equipment, and in particular to a zero-discharge industrial wastewater treatment system and method. Background Art

[0002] Industrial wastewater refers to wastewater and waste liquid discharged during the production process. It contains industrial production materials, intermediate products, by-products and pollutants generated in the production process that are lost with the water. It is an important cause of environmental pollution, especially water pollution.

[0003] Common industrial wastewater treatment equipment performs physical and chemical treatment on wastewater to meet discharge standards. The initial physical treatment typically involves adding a flocculant for precipitation. This precipitation process typically requires the use of a sedimentation tank, where industrial wastewater is poured into the tank and an appropriate amount of flocculant is added to promote sedimentation.

[0004] The above-mentioned related technologies have the following defects: sludge is usually generated during the sedimentation process and accumulates at the bottom of the tank. The traditional way to deal with the bottom sludge is to suck out the bottom sludge with the help of a pipe, and then filter it with the help of filters and other components. However, filters and other components need to be shut down and replaced when the filter element is fully loaded, and continuous filtration cannot be achieved, so it needs to be improved. Summary of the Invention

[0005] In order to achieve continuous filtration, the present application provides a zero-discharge industrial wastewater treatment system and treatment method.

[0006] The present application provides a zero-discharge industrial wastewater treatment system and treatment method using the following technical solutions: A zero-discharge industrial wastewater treatment system includes a sedimentation tank, a slurry pump is provided at the bottom of the sedimentation tank, the slurry pump is connected to a slurry pipe, a mounting frame is provided above the sedimentation tank, the mounting frame is connected to a flexible filter screen cartridge, both ends of the filter screen cartridge are open, the water outlet end of the slurry pipe is located above the filter screen cartridge, and an upper clamping assembly and a lower clamping assembly are provided in the middle of the filter screen cartridge from top to bottom, the upper clamping assembly and the lower clamping assembly are both connected to the mounting frame and are used to clamp the filter screen cartridge locally to achieve local closure.

[0007] By adopting the above technical solutions, the problem that sludge treatment in traditional sedimentation tanks requires shutdown can be effectively solved. By setting a flexible filter mesh cylinder and adjustable upper and lower clamping components, the sludge can be continuously filtered and cleaned without shutdown. The specific effects are as follows: The design of the filter mesh cylinder in combination with the cooperation of the upper and lower clamping components can flexibly adjust the filtration area, realize the switching between the main filtration section and the secondary filtration section, and avoid the influence of sludge accumulation on the filtration efficiency. By using the opening and closing operations of the upper and lower clamping components, the accumulated sludge can be flushed into the secondary filtration section and discharged without shutdown, significantly improving the sludge cleaning efficiency and reducing the equipment maintenance time.

[0008] Preferably, the upper clamping component includes a pair of upper clamping plates and an upper clamping drive. The upper clamping plates are slidably connected to the mounting frame, and the upper clamping drive is connected to the mounting frame and is used to drive the two upper clamping plates to approach and move away from each other to clamp and reset the filter mesh cylinder by the two upper clamping plates.

[0009] By adopting the above technical solutions, this design enables the filter mesh cylinder to remain closed during operation in the main filtration section, ensuring effective filtration of muddy water. At the same time, when sludge needs to be cleaned, the sludge can be flushed into the secondary filtration section by opening the upper clamping component, realizing sludge cleaning without shutdown, improving the sludge cleaning efficiency and the continuity of system operation.

[0010] Preferably, sealing strips are provided on the end faces of the two upper clamping plates close to each other, and sealing ridges that are mutually engaged are provided on the end faces of the two sealing strips close to each other.

[0011] By adopting the above technical solutions, the cooperation of the sealing strips and the sealing ridges can prevent the area where the filter mesh cylinder is clamped from being easily worn or even torn. At the same time, the mutual engagement of the sealing ridges can also prevent leakage at this place.

[0012] Preferably, backwashing nozzles are provided on the surface of the upper clamping plate, and the backwashing nozzles are arranged facing the filter mesh cylinder.

[0013] By adopting the above technical solutions, the setting of the backwashing nozzles can effectively remove the sludge blocked in the mesh holes of the filter mesh cylinder near the upper clamping plate, slow down the blockage phenomenon, and thus ensure the filtration efficiency and service life of the filter mesh cylinder.

[0014] Preferably, the lower clamping component includes a lower clamping frame. The lower clamping frame is slidably connected to the mounting frame. The mounting frame is provided with a lifting drive for driving the mounting frame to move axially along the filter mesh cylinder. A lower clamping support plate is slidably connected inside the lower clamping frame. A lower clamping roller is rotatably connected to the lower clamping support plate. The lower clamping support plate is provided with a rotation drive for driving the lower clamping roller to rotate. The lower clamping frame is also connected with a telescopic drive for driving the lower clamping support plate to approach and move away from the filter mesh cylinder.

[0015] By adopting the above technical solution, the lower clamping assembly can move axially along the filter mesh cylinder through the sliding connection between the lower clamping frame and the mounting frame and the cooperation of the lifting drive, so as to realize the extrusion treatment of sludge. The lower clamping support plate approaches or moves away from the filter mesh cylinder under the action of the telescopic drive to ensure the effective clamping of the filter mesh cylinder. The lower clamping roller rotates driven by the rotation drive, further enhancing the extrusion effect on the sludge, effectively reducing the water content of the sludge, and improving the sludge treatment efficiency.

[0016] Preferably, a sludge conveying track is arranged below the filter mesh cylinder on the mounting frame, and a sludge receiving hopper box is arranged on the sludge conveying track.

[0017] By adopting the above technical solution, when it is necessary to discharge the sludge, the sludge receiving hopper box is moved below the filter mesh cylinder for sludge collection. After completion, the sludge receiving hopper box is moved out from below the filter mesh cylinder to carry out normal filtration work, and the sludge is then transported to a designated area for centralized treatment. The sludge receiving hopper box can timely collect the sludge falling from the bottom opening of the filter mesh cylinder when the sludge is discharged, avoiding secondary pollution caused by the scattering of the sludge. The setting of the sludge conveying track enables the sludge receiving hopper box to flexibly move to a designated position below the filter mesh cylinder for sludge collection, and then move out from below the filter mesh cylinder after collection, ensuring that the normal filtration work is not disturbed, and at the same time facilitating the transportation of the sludge to a designated area for centralized treatment, improving the operation efficiency and environmental protection performance of the whole system.

[0018] Preferably, a sludge conveying chain is arranged between adjacent sludge receiving hopper boxes, and several sludge receiving hopper boxes are conveyed through a sludge receiving drive, and the sludge conveying chain is provided with a spacing adjusting assembly.

[0019] By adopting the above technical solution, the sludge conveying chain and the spacing adjusting assembly between the sludge receiving hopper boxes can flexibly adjust the spacing between adjacent sludge receiving hopper boxes. During the continuous operation of the system, the running speed of the sludge receiving hopper boxes is adjusted according to the sludge discharging cycle. Specifically, for example, shortening the sludge conveying chain can accelerate the replacement speed of the sludge receiving hopper boxes, thereby improving the sludge collection efficiency and ensuring the normal progress of the filtration work.

[0020] Preferably, the sedimentation tank includes a main body and a filtration tank, the filter mesh cylinder is located above the filtration tank, and an overflow plate is arranged between the filtration tank and the main body.

[0021] By adopting the above technical solution, the filtration process of the muddy water is carried out independently above the filtration tank, avoiding the falling water body directly falling into the sedimentation tank and affecting the water body on the surface layer of the sedimentation tank, so as to prevent the sedimentation speed and sedimentation effect of the water body in the sedimentation tank from decreasing. In addition, the overflow plate arranged between the filtration tank and the main body enables the filtered water body to smoothly flow back into the main body by means of overflow, further improving the cleanliness of the water body and causing less disturbance to the water body in the sedimentation tank. This design effectively improves the efficiency and quality of wastewater treatment and reduces the impact on subsequent treatment processes.

[0022] Preferably, the mounting frame is provided with a support cylinder, an installation ring is arranged above the support cylinder, an adjusting cylinder is sleeved on the support cylinder in a threaded manner, a pressing plate is arranged at the top of the adjusting cylinder, the top of the filter screen cylinder is wound around the installation ring, and the installation ring abuts between the top of the support cylinder and the bottom of the pressing plate.

[0023] By adopting the above technical solution, problems such as filter holes being blocked, local wear or damage may occur during the continuous use of the filter screen cylinder. If the filter screen cylinder is directly replaced, it will cause the machine to stop. By rotating the adjusting cylinder, the pressing plate no longer tightly presses the installation ring. After that, the filter screen cylinder can be pulled downward to discharge the filter screen cylinder on the installation ring, move out the reserved part of the filter screen cylinder, and then tighten the adjusting cylinder again. By using the pressing plate to tightly press the installation ring and the reserved filter screen cylinder wound on the installation ring again, repositioning can be achieved. During this process, the top of the mud water pipe can continuously be located inside the installation ring and the reserved filter screen cylinder can immediately be put into the filtering work, thus not affecting the filtering progress.

[0024] A treatment method based on a zero-emission industrial wastewater treatment system uses a mud pump to pump out sludge and inject it into the filter screen cylinder through a mud water pipe. The filter screen cylinder above the upper clamping assembly is the main filtering section, and the filter screen cylinder between the upper clamping assembly and the lower clamping assembly is the secondary filtering section; In the initial state, both the upper clamping assembly and the lower clamping assembly are in a closed state. At this time, the muddy water is filtered at the main filtering section, and the filtered water body falls back into the sedimentation tank, and the intercepted sludge gradually accumulates in the main filtering section; When the sludge accumulates to a set degree, the upper clamping assembly opens, and the lower clamping assembly still remains in a closed state. The muddy water is filtered jointly at the main filtering section and the secondary filtering section. At this time, the muddy water flushes the intercepted sludge into the secondary filtering section; Then the upper clamping assembly closes, restoring the filtering state of the main filtering section, the lower clamping assembly opens, the intercepted sludge is discharged from the bottom opening of the filter screen cylinder, and then the lower clamping assembly closes.

[0025] By adopting the above technical solution, the continuous operation of sludge filtration is achieved. Specifically, a flexible filter mesh cylinder, an upper clamping assembly, and a lower clamping assembly are provided, which can clean the sludge inside the filter mesh cylinder without stopping the machine, significantly improving the sludge cleaning efficiency. In the initial state, the upper clamping assembly and the lower clamping assembly are closed, and the muddy water is only filtered through the main filtration section. The filtered water body falls back into the sedimentation tank, and the intercepted sludge gradually accumulates in the main filtration section, ensuring the stable progress of the filtration process. When the sludge accumulates to a set degree, the upper clamping assembly is opened, and the muddy water is filtered through both the main filtration section and the secondary filtration section at the same time. At this time, the muddy water flushes the sludge accumulated in the main filtration section into the secondary filtration section, effectively preventing the main filtration section from being blocked by sludge. After closing the upper clamping assembly to restore the filtration state of the main filtration section, the lower clamping assembly is opened, and the intercepted sludge is discharged from the bottom opening of the filter mesh cylinder, realizing the automatic cleaning of the sludge and avoiding shutdown operations.

[0026] In summary, the present application includes at least one of the following beneficial technical effects: 1. By setting a flexible filter mesh cylinder, an upper clamping assembly, and a lower clamping assembly, it is possible to achieve the cleaning of sludge without stopping the machine, avoiding the problem that traditional filters need to stop the machine for replacement due to the full load of the filter element, thereby improving the continuous operation ability and sludge cleaning efficiency of the system; 2. By utilizing the synergistic effect of the upper clamping assembly and the lower clamping assembly, the working state of the filter mesh cylinder can be flexibly adjusted, enabling the main filtration section and the secondary filtration section to undertake the filtration tasks respectively in different stages, effectively reducing the impact of sludge accumulation on the filtration efficiency; 3. The overflow design between the sedimentation tank and the filtration tank reduces the disturbance of the water body on the surface layer of the sedimentation tank during the filtration process, improves the sedimentation effect, and at the same time ensures that the filtered water body can flow back to the sedimentation tank cleanly. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic structural diagram of an embodiment of the present application; Figure 2 It is a schematic structural diagram for showing the connection relationship between the mounting frame and each component in an embodiment of the present application; Figure 3 It is an exploded schematic diagram for showing the connection relationship between the filter mesh cylinder and the mounting ring in an embodiment of the present application; Figure 4 It is a schematic structural diagram for showing the cooperation relationship between adjacent sealing ridges in an embodiment of the present application; Figure 5 It is a schematic structural diagram for showing the connection relationship between the filter mesh cylinder and the lower clamping assembly in an embodiment of the present application; Figure 6 It is a schematic structural diagram for showing the connection relationship between the sludge transportation track and the sludge receiving hopper box in an embodiment of the present application; Figure 7This is a schematic structural diagram for embodying the connection relationship between the spacing adjustment component and the sludge conveying chain in the embodiment of the present application; Figure 8 This is a schematic structural diagram for embodying the state of sludge in the main filtration section in the embodiment of the present application; Figure 9 This is a schematic structural diagram for embodying the state of sludge in the secondary filtration section in the embodiment of the present application; Figure 10 This is a schematic structural diagram for embodying the state of sludge in the mud receiving hopper box in the embodiment of the present application.

[0028] In the figure: 1, sedimentation tank; 11, body; 12, filtration tank; 13, sludge pump; 14, sludge pipe; 15, filter mesh cylinder; 16, overflow plate; 17, mounting rack; 2, upper clamping assembly; 21, upper clamping plate; 22, upper clamping drive; 23, sealing strip; 24, sealing convex strip; 25, backwashing spray head; 3, lower clamping assembly; 31, lower clamping frame; 32, lifting drive; 33, lower clamping support plate; 34, lower clamping roller; 35, rotation drive; 36, telescopic drive; 4, support cylinder; 41, mounting ring; 42, adjusting cylinder; 43, pressing plate; 5, sludge conveying track; 51, mud receiving hopper box; 52, sludge conveying chain; 53, spacing adjustment component. Detailed implementation manners

[0029] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings. The described embodiments are only possible technical implementations of the present invention, not all possible implementations. Those skilled in the art can completely combine the embodiments of the present invention to obtain other embodiments without creative labor, and these embodiments are also within the protection scope of the present invention.

[0030] The inventors of the present application found that in industrial wastewater treatment technologies, there is a problem that components such as filters need to stop for filter element replacement when the filter element is full. Therefore, the present application mainly adopts a zero-emission industrial wastewater treatment system and treatment method, and by setting a flexible filter mesh cylinder and the combined use of an upper clamping assembly and a lower clamping assembly, the effects of continuous sludge filtration and cleaning are achieved. The following is a further detailed description of the present application. Embodiment

[0031] The embodiment of the present application discloses a zero-emission industrial wastewater treatment system. Refer to Figure 1, The zero-emission industrial wastewater treatment system includes a sedimentation tank 1. The sedimentation tank 1 includes a main body 11 and a filtration tank 12. Sludge and muddy water mixture accumulate at the bottom of the main body 11. A sludge pump 13 is arranged at the bottom of the main body 11 for pumping muddy water. The sludge pump 13 is connected to a sludge pipe 14. Above the filtration tank 12, a filter mesh cylinder 15 is arranged for filtering sludge. The muddy water filtration part is arranged above the filtration tank 12 to reduce the impact of the falling water on the surface water inside the main body 11 of the sedimentation tank 1 and delay the sedimentation speed and effect. An overflow plate 16 is arranged between the filtration tank 12 and the main body 11. The filtered water returns to the inside of the main body 11 in an overflow manner, being cleaner.

[0032] Refer to Figure 2 , At the top of the filtration tank 12, a mounting frame 17 is fixedly arranged; the filter mesh cylinder 15 is arranged on the top of the mounting frame 17 for filtering sludge. Specifically, the filter mesh cylinder 15 is made of flexible materials such as polyester fiber and nylon, which are high molecular synthetic fibers with high strength and corrosion resistance. The diameter of the filter mesh cylinder 15 can be adjusted according to actual needs, for example, 0.5 meters to 2 meters. The mesh size of the filter mesh cylinder 15 can be selected according to the particle size of the sludge to be treated, for example, between 0.1 mm and 1 mm. The surface of the filter mesh cylinder 15 can be anti-sticking treated to reduce the adhesion of sludge on the surface of the filter mesh cylinder 15 and improve the filtration efficiency. Both ends of the filter mesh cylinder 15 are open. The water outlet end of the sludge pipe 14 is located above the filter mesh cylinder 15. In the middle of the filter mesh cylinder 15, an upper clamping assembly 2 and a lower clamping assembly 3 are arranged from top to bottom. Both the upper clamping assembly 2 and the lower clamping assembly 3 are connected to the mounting frame 17 and are used to clamp a part of the filter mesh cylinder 15 to achieve partial closure. The process of cleaning the sludge at the bottom of the sedimentation tank 1 is as follows: Use the sludge pump 13 to pump out the sludge and inject it into the filter mesh cylinder 15 through the sludge pipe 14. The filter mesh cylinder 15 above the upper clamping assembly 2 is the main filtration section, and the filter mesh cylinder 15 between the upper clamping assembly 2 and the lower clamping assembly 3 is the secondary filtration section; In the initial state, both the upper clamping assembly 2 and the lower clamping assembly 3 are in the closed state. At this time, the muddy water is filtered at the main filtration section, and the filtered water falls back into the sedimentation tank 1. The intercepted sludge gradually accumulates in the main filtration section; When the sludge accumulates to a set degree, the upper clamping assembly 2 is opened, and the lower clamping assembly 3 remains in the closed state. The muddy water is filtered jointly by the main filtration section and the secondary filtration section. At this time, the muddy water flushes the intercepted sludge into the secondary filtration section; Then the upper clamping assembly 2 is closed to restore the filtration state of the main filtration section, the lower clamping assembly 3 is opened, and the intercepted sludge is discharged from the bottom opening of the filter mesh cylinder 15. Subsequently, the lower clamping assembly 3 is closed. Repeating the above steps can realize the continuous operation of sludge filtration, and the sludge inside the filter mesh cylinder 15 can be cleaned without stopping during operation, improving the sludge cleaning efficiency.

[0033] Refer to Figure 2 and Figure 3, the mounting bracket 17 is fixedly connected with a support cylinder 4. An installation ring 41 is arranged above the support cylinder 4. The support cylinder 4 is threadedly sleeved with an adjustment cylinder 42. The inner side of the top of the adjustment cylinder 42 is fixedly provided with a pressing plate 43 in the circumferential direction. The top of the filter screen cylinder 15 is wound around the installation ring 41, and the installation ring 41 abuts between the top of the support cylinder 4 and the bottom of the pressing plate 43. During the continuous use of the filter screen cylinder 15, problems such as filter holes being blocked, local wear / damage, etc. may occur. If the filter screen cylinder 15 is directly replaced, it will still cause downtime. In this application, the adjustment cylinder 42 can be rotated so that the pressing plate 43 no longer presses tightly against the installation ring 41. After that, the filter screen cylinder 15 can be pulled downward to discharge the filter screen cylinder 15 on the installation ring 41, and the reserved part of the filter screen cylinder 15 can be removed. Then, the adjustment cylinder 42 is tightened again, and the pressing plate 43 is used to press tightly against the installation ring 41 and the reserved filter screen cylinder 15 wound on the installation ring 41 again to achieve repositioning. During this process, the top of the mud water pipe 14 can continuously be located inside the installation ring 41, and the reserved filter screen cylinder 15 can be immediately put into the filtering work, thus not affecting the filtering progress.

[0034] Refer to Figure 2 and Figure 4 , the upper clamping assembly 2 includes a pair of upper clamping plates 21 and an upper clamping drive 22. The upper clamping plates 21 are slidably connected to the mounting bracket 17. The upper clamping plates 21 can be made of corrosion-resistant materials such as stainless steel and aluminum alloy, and have high strength and wear resistance. The upper clamping drive 22 is connected to the mounting bracket 17 and is used to drive the two upper clamping plates 21 to approach and separate from each other to clamp and reset the filter screen cylinder 15 by the two upper clamping plates 21. The upper clamping drive 22 can adopt driving devices such as cylinders, hydraulic cylinders or electric push rods, and the two upper clamping plates 21 are made to approach and separate from each other by controlling the expansion and contraction of the cylinders, hydraulic cylinders or electric push rods.

[0035] Sealing strips 23 are arranged on the end faces of the two upper clamping plates 21 that are close to each other, and mutually engaged sealing ridges 24 are arranged on the end faces of the two sealing strips 23 that are close to each other. The sealing strips 23 and the sealing ridges 24 can be made of flexible materials such as silica gel and rubber, and have good sealing performance and wear resistance. The shape of the sealing ridges 24 can be circular, square or other shapes, as long as they can be mutually engaged. When the two upper clamping plates 21 clamp the filter screen cylinder 15, the cooperation of the sealing strips 23 and the sealing ridges 24 can make the area where the filter screen cylinder 15 is clamped not easily worn or even torn, and at the same time, the mutual engagement of the sealing ridges 24 can also make it not easy to leak at this place.

[0036] To facilitate the cleaning of impurities on the surface of the filter screen cylinder 15, a backwashing spray head 25 is also provided on the surface of the upper clamping plate 21, and the backwashing spray head 25 is arranged facing the filter screen cylinder 15. The backwashing spray head 25 can adopt spraying devices such as nozzles and spray guns to clean the surface of the filter screen cylinder 15 through high-pressure water flow. The spraying angle and spraying pressure of the backwashing spray head 25 can be adjusted according to actual needs. The arrangement of the backwashing spray head 25 can be single or multiple, and is reasonably arranged according to the size and shape of the filter screen cylinder 15. The water supply of the backwashing spray head 25 can come from the upper water body in the sedimentation tank 1 or an external water source connected to the backwashing spray head 25 through a pipeline.

[0037] Refer to Figure 2 and Figure 5 , the lower clamping assembly 3 includes a lower clamping frame 31, and the lower clamping frame 31 can be made of corrosion-resistant materials such as stainless steel and aluminum alloy, and has high strength and wear resistance. The shape of the lower clamping frame 31 can be circular, square or other shapes, and is designed according to the shape of the filter screen cylinder 15. In this embodiment, the lower clamping frame 31 is square. The lower clamping frame 31 is slidably connected to the mounting frame 17 in the vertical direction, and the mounting frame 17 is provided with a lifting drive 32 for driving the mounting frame 17 to move axially along the filter screen cylinder 15. The lifting drive 32 can adopt driving devices such as cylinders, hydraulic cylinders or electric push rods, and the up and down movement of the lower clamping frame 31 is realized by controlling the expansion and contraction of the cylinder, hydraulic cylinder or electric push rod.

[0038] A lower clamping support plate 33 is slidably connected inside the lower clamping frame 31 in the horizontal direction. The lower clamping support plate 33 can be made of corrosion-resistant materials such as stainless steel and aluminum alloy, and has high strength and wear resistance. A lower clamping roller 34 is rotatably connected inside the lower clamping support plate 33. The lower clamping roller 34 can be made of corrosion-resistant materials such as stainless steel and aluminum alloy, and has high strength and wear resistance. A rotation drive 35 for driving the lower clamping roller 34 to rotate is provided on the side wall of the lower clamping support plate 33. The rotation drive 35 can adopt transmission devices such as motors and reducers, and the rotation of the lower clamping roller 34 is realized by controlling the forward and reverse rotation of the motor. The lower clamping frame 31 is also connected with a telescopic drive 36 for driving the lower clamping support plate 33 to approach and move away from the filter screen cylinder 15. The telescopic drive 36 can adopt driving devices such as cylinders, hydraulic cylinders or electric push rods, and the approach and separation of the lower clamping support plate 33 are realized by controlling the expansion and contraction of the cylinder, hydraulic cylinder or electric push rod. When the sludge is located between the upper clamping assembly 2 and the lower clamping assembly 3, and both the upper clamping assembly 2 and the lower clamping assembly 3 are closed, the rotation drive 35 can be used to control the rotation of the two lower clamping rollers 34 to squeeze the sludge, and at the same time, the lifting drive 32 is used in cooperation to realize the movement of the lower clamping frame 31 towards the upper clamping assembly 2 to squeeze the sludge, so as to further reduce its water content.

[0039] Refer to Figure 2 , Figure 6and Figure 7 Below the filter mesh cylinder 15, a sludge transport track 5 is arranged on the mounting frame 17. The sludge transport track 5 can be made of corrosion-resistant materials such as stainless steel and aluminum alloy, and has high strength and wear resistance. A sludge receiving hopper box 51 is arranged on the sludge transport track 5. The sludge receiving hopper box 51 can be made of corrosion-resistant materials such as stainless steel and aluminum alloy, and has high strength and wear resistance. The capacity of the sludge receiving hopper box 51 can be adjusted according to actual needs, generally between 0.5 cubic meters and 2 cubic meters. A sludge transport chain 52 is arranged between adjacent sludge receiving hopper boxes 51. The sludge transport chain 52 can be made of corrosion-resistant materials such as stainless steel and aluminum alloy, and has high strength and wear resistance. A number of sludge receiving hopper boxes 51 are transported through a sludge receiving drive (not shown in the figure). The sludge receiving drive can adopt transmission devices such as motors and reducers, and the transport of the sludge receiving hopper box 51 is realized by controlling the forward and reverse rotation of the motor. A spacing adjustment component 53 is arranged on the sludge transport chain 52. The spacing adjustment component 53 can be in the form of a buckle or a bolt-nut combination to realize the partial overlap of the sludge transport chain 52, and the spacing between adjacent sludge receiving hopper boxes 51 can be adjusted in this way. During the continuous operation of the system, timed sludge discharge operation can be realized, and then the running speed of the sludge receiving hopper box 51 is adjusted based on the sludge discharge cycle. For example, when the sludge transport chain 52 "shortens", the replacement speed of the sludge receiving hopper box 51 is faster.

[0040] Through the use of the flexible filter mesh cylinder 15 and the cooperation of the upper clamping component 2 and the lower clamping component 3, the continuous filtration and cleaning of sludge are realized in this system. In the initial state, both the upper clamping component 2 and the lower clamping component 3 are in the closed state. At this time, filtration is carried out at the self-filtration section of the muddy water, and the filtered water body falls back into the sedimentation tank 1, and the intercepted sludge gradually accumulates in the main filtration section. When the sludge accumulates to a set degree, the upper clamping component 2 opens, and the lower clamping component 3 still remains in the closed state. The muddy water is filtered jointly in the main filtration section and the secondary filtration section. At this time, the muddy water flushes the intercepted sludge into the secondary filtration section. Then the upper clamping component 2 closes, restoring the filtration state of the main filtration section, the lower clamping component 3 opens, and the intercepted sludge is discharged from the bottom opening of the filter mesh cylinder 15, and then the lower clamping component 3 closes. Repeating the above steps can realize the continuous operation of sludge filtration, and the sludge inside the filter mesh cylinder 15 can be cleaned without stopping during the operation, improving the sludge cleaning efficiency. The whole system has a simple structure, convenient operation, and high practicality and popularization value.

[0041] Referring to Figure 8 、 Figure 9 and Figure 10 This application embodiment also discloses a zero-emission industrial wastewater treatment method: The sludge pump 13 is used to pump out the sludge and inject it into the filter mesh cylinder 15 through the sludge pipe 14. The filter mesh cylinder 15 above the upper clamping assembly 2 is the main filtration section, and the filter mesh cylinder 15 between the upper clamping assembly 2 and the lower clamping assembly 3 is the secondary filtration section; In the initial state, both the upper clamping assembly 2 and the lower clamping assembly 3 are in the closed state. At this time, the muddy water is filtered at the main filtration section, and the filtered water body falls back into the sedimentation tank 1, and the intercepted sludge gradually accumulates in the main filtration section; When the sludge accumulates to a set degree, the upper clamping assembly 2 is opened, and the lower clamping assembly 3 remains in the closed state. The muddy water is filtered jointly in the main filtration section and the secondary filtration section. At this time, the muddy water flushes the intercepted sludge into the secondary filtration section; Then the upper clamping assembly 2 is closed to restore the filtration state of the main filtration section, the lower clamping assembly 3 is opened, and the intercepted sludge is discharged from the bottom opening of the filter mesh cylinder 15, and then the lower clamping assembly 3 is closed.

[0042] Repeating the above steps can realize the continuous operation of sludge filtration, and the sludge inside the filter mesh cylinder 15 can be cleaned without stopping during the operation, thereby improving the sludge cleaning efficiency.

[0043] The above are all preferred embodiments of this application, and the protection scope of this application is not limited thereby. Therefore, all equivalent changes made according to the structure, shape, and principle of this application should be covered within the protection scope of this application.

Claims

1. A zero-emission industrial wastewater treatment system, including a sedimentation tank (1), a sludge pump (13) is arranged at the bottom of the sedimentation tank (1), the sludge pump (13) is connected with a sludge pipe (14), and it is characterized in that: Above the sedimentation tank (1), there is an installation frame (17). The installation frame (17) is connected to a flexible filter mesh cylinder (15). Both ends of the filter mesh cylinder (15) are open. The water outlet end of the mud water pipe (14) is located above the filter mesh cylinder (15). In the middle of the filter mesh cylinder (15), an upper clamping assembly (2) and a lower clamping assembly (3) are arranged from top to bottom. The upper clamping assembly (2) and the lower clamping assembly (3) are both connected to the installation frame (17) and are used to clamp a part of the filter mesh cylinder (15) to achieve partial closure.

2. The zero-emission industrial wastewater treatment system according to claim 1, wherein: The upper clamping assembly (2) includes a pair of upper clamping plates (21) and an upper clamping drive (22). The upper clamping plates (21) are slidably connected to the installation frame (17). The upper clamping drive (22) is connected to the installation frame (17) and is used to drive the two upper clamping plates (21) to approach and separate from each other to clamp and reset the filter mesh cylinder (15) with the two upper clamping plates (21).

3. A zero-emission industrial wastewater treatment system according to claim 2, characterized in that: On the end faces of the two upper clamping plates (21) that are close to each other, there are sealing strips (23). On the end faces of the two sealing strips (23) that are close to each other, there are sealing ridges (24) that are mutually engaged.

4. An industrial wastewater treatment system with zero emissions according to claim 2, characterized in that: On the surface of the upper clamping plate (21), there is a backwashing spray head (25). The backwashing spray head (25) is arranged facing the filter mesh cylinder (15).

5. A zero-emission industrial wastewater treatment system according to claim 1, characterized in that: The lower clamping assembly (3) includes a lower clamping frame (31). The lower clamping frame (31) is slidably connected to the installation frame (17). The installation frame (17) is provided with a lifting drive (32) for driving the installation frame (17) to move along the axial direction of the filter mesh cylinder (15). Inside the lower clamping frame (31), a lower clamping support plate (33) is slidably connected. The lower clamping support plate (33) is rotatably connected to a lower clamping roller (34). The lower clamping support plate (33) is provided with a rotation drive (35) for driving the lower clamping roller (34) to rotate. The lower clamping frame (31) is also connected to a telescopic drive (36) for driving the lower clamping support plate (33) to approach and separate from the filter mesh cylinder (15).

6. A zero-emission industrial wastewater treatment system according to claim 1, characterized in that: Below the filter mesh cylinder (15), the installation frame (17) is provided with a mud transportation track (5). On the mud transportation track (5), there is a mud receiving hopper box (51).

7. An industrial wastewater treatment system with zero emissions according to claim 6, characterized in that: Between adjacent mud receiving hopper boxes (51), there is a mud transportation chain (52). A number of mud receiving hopper boxes (51) are transported through a mud receiving drive. The mud transportation chain (52) is provided with a spacing adjustment assembly (53).

8. A zero-emission industrial wastewater treatment system according to claim 1, characterized in that: The sedimentation tank (1) includes a main body (11) and a filtration tank (12). The filter mesh cylinder (15) is located above the filtration tank (12). Between the filtration tank (12) and the main body (11), there is an overflow plate (16).

9. A zero-emission industrial wastewater treatment system according to claim 1, characterized in that: The installation frame (17) is provided with a support cylinder (4). Above the support cylinder (4), there is an installation ring (41). The support cylinder (4) is threadedly sleeved with an adjustment cylinder (42). At the top of the adjustment cylinder (42), there is a pressing plate (43). The top of the filter mesh cylinder (15) is wound around the installation ring (41). The installation ring (41) is abutted between the top of the support cylinder (4) and the bottom of the pressing plate (43).

10. A treatment method for a zero-emission industrial wastewater treatment system according to any one of claims 1-9, characterized in that: The sludge pump (13) is used to pump out the sludge and inject it into the filter mesh cylinder (15) through the sludge pipe (14). The filter mesh cylinder (15) above the upper clamping assembly (2) is the main filtration section, and the filter mesh cylinder (15) between the upper clamping assembly (2) and the lower clamping assembly (3) is the secondary filtration section; In the initial state, both the upper clamping assembly (2) and the lower clamping assembly (3) are in the closed state. At this time, the muddy water is filtered at the main filtration section, and the filtered water body falls back into the sedimentation tank (1), and the intercepted sludge gradually accumulates in the main filtration section; When the sludge accumulates to a set level, the upper clamping assembly (2) is opened, and the lower clamping assembly (3) remains in the closed state. The muddy water is filtered jointly in the main filtration section and the secondary filtration section. At this time, the muddy water flushes the intercepted sludge into the secondary filtration section; Then the upper clamping assembly (2) is closed to restore the filtration state of the main filtration section, the lower clamping assembly (3) is opened, and the intercepted sludge is discharged from the bottom opening of the filter mesh cylinder (15), and then the lower clamping assembly (3) is closed.

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