Sewage treatment structure and treatment method based on hollow fiber biological membrane

Abstract

The invention discloses a sewage treatment structure and a sewage treatment method based on a hollow fiber biological membrane, relates to the technical field of sewage treatment, and aims to solve the problems that an existing hollow fiber biological membrane is loose in structure, is easily interfered by the environment, is easily fallen off and damaged due to water flow impact and pollutant load fluctuation in sewage treatment, reduces the efficiency, and reduces the sewage treatment cost. The device comprises a shell assembly, a mounting assembly, a connecting assembly connected with the lower portion of the mounting assembly, and a limiting assembly, and the connecting assembly and the limiting assembly are connected with the lower portion of the mounting assembly. By means of deflection displacement of the storer, movement of the hinge and extension of the telescopic plate, water flow impact is easily decomposed, the biological membrane structure is protected, the sewage treatment efficiency is stably maintained, when the filter is cleaned or replaced, the handle is rotated anticlockwise, the biological membrane structure is easily taken out, large-scale equipment disassembly is not needed, operation is easy and convenient, structure falling and damage are reduced, and the service life of the filter is prolonged. And the part replacement cost is greatly reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of sewage treatment, and more specifically, to a sewage treatment structure and treatment method based on a hollow fiber biofilm. Background Art

[0002] The sewage generated during the human life process is one of the main sources of water pollution. It mainly includes feces and washing sewage, etc. The amount of domestic sewage discharged per person per day in the city is 150L - 400L, and its amount is closely related to the living standard. Domestic sewage contains a large amount of organic matter, such as cellulose, starch, sugars, and fat proteins, etc.; it often also contains pathogenic bacteria, viruses, and parasite eggs; inorganic salts such as chlorides, sulfates, phosphates, bicarbonates, and sodium, potassium, calcium, magnesium, and a small amount of heavy metals, etc. Chinese patent document (CN115650408B) discloses a sewage treatment device with a hollow fiber biofilm. It is proposed in the specification that "it includes a primary filter box. A first hydraulic rod is fixedly installed on the inner cavity side wall of the primary filter box. A first push plate is fixedly installed at the end of the first hydraulic rod that is not connected to the primary filter box. A primary filter screen is arranged in the bottom wall opening of the primary filter box. Angle irons are welded at the four corners of the bottom surface of the primary filter box. The four angle irons are jointly connected to a collection box. A water suction pipe is welded at the bottom end of the side wall of the collection box. The water suction pipe is fixedly connected to a secondary filter box. A second hydraulic rod is fixedly installed on the inner cavity side wall of the secondary filter box away from the water suction pipe. A second push plate is fixedly installed at the end of the second hydraulic rod that is not connected to the secondary filter box. A filter frame with a hollow fiber biofilm is inserted at the end of the secondary filter box connected to the water suction pipe. This sewage treatment device with a hollow fiber biofilm is provided with a hollow fiber biofilm that is convenient to replace, ensuring the water quality after sewage treatment". During its actual use, the protection of the biofilm is poor, and once the biofilm is damaged or needs to be replaced, the steps are extremely cumbersome, restricting the service life of the biofilm and making it difficult to quickly replace the damaged biofilm, resulting in poor sewage treatment effect; The existing hollow fiber biofilms are mainly composed of microorganisms and their secreted extracellular polymers. Their structures exhibit loose and porous characteristics and are relatively sensitive to changes in the external environment. In practical application scenarios such as sewage treatment, biofilms often face multiple challenges such as water flow impact and drastic fluctuations in pollutant load. These factors are extremely likely to cause the biofilm to fall off or break, thereby significantly reducing the sewage treatment efficiency. In addition, when traditional biofilm systems deal with membrane damage, they often need to carry out large-scale disassembly and replacement of equipment. The operation process is cumbersome and complex, not only time-consuming and laborious, but also greatly increasing the maintenance cost, restricting the economy and sustainable operation ability of the system. In view of this, we propose a sewage treatment structure and treatment method based on a hollow fiber biofilm. Summary of the Invention

[0003] The object of the present invention is to provide a sewage treatment structure and method based on a hollow fiber biofilm, so as to solve the technical problems that the existing hollow fiber biofilm structure is loose, vulnerable to environmental interference, easy to fall off and break due to water flow impact and pollutant load fluctuation in sewage treatment, resulting in reduced efficiency, and large-scale disassembly of equipment is required after damage, with complex operation and high cost.

[0004] To solve the above technical problems, the present invention provides the following technical solutions: A sewage treatment structure based on a hollow fiber biofilm, including valves, a treatment tank and side plates, and further including, A box body mechanism, including a housing assembly, side plates arranged on both sides of the housing assembly, several valves connected to the side plates, and a sealing assembly, wherein the sealing assembly is located inside the housing assembly; and, A biofilm mechanism, including a mounting assembly, a connecting assembly connected below the mounting assembly, and a limiting assembly, wherein the limiting assembly is arranged below the connecting assembly.

[0005] Firstly, through the deflection displacement methods of memory deflection, hinge part movement and telescopic plate extension, the present invention can effectively relieve the impact force when the water flow hits the memory, reduce the damage to the biofilm structure caused by water flow impact, and reduce the risk of structure falling off and breaking due to water flow impact, thus helping to maintain the sewage treatment efficiency. Secondly, when it is necessary to clean or replace the filter, through a series of operations such as rotating the handle counterclockwise, the entire biofilm mechanism can be easily taken out of the treatment tank without large-scale disassembly of equipment, and the operation is more convenient. Finally, the situation of the biofilm structure falling off and breaking due to water flow impact and pollutant load fluctuation is reduced, and the cost caused by frequent component replacement is also reduced.

[0006] Preferably, both sides of the housing assembly are fixedly connected to two side plates respectively, and both sides of the two side plates are respectively communicated with several valves, and the upper part of the inner wall of the housing assembly is slidably connected to two sealing assemblies.

[0007] Preferably, the lower part of the mounting assembly is fixedly connected to the connecting assembly, and the bottom end of the connecting assembly is fixedly connected to the limiting assembly; The mounting assembly is clamped above the housing assembly, the mounting assembly and the two sealing assemblies are mutually clamped, and the limiting assembly is clamped below the inner wall of the housing assembly.

[0008] Preferably, the housing assembly includes a treatment tank, a through hole is opened above the treatment tank, two limiting grooves are opened above the inner wall of the treatment tank, a mounting groove is opened below the inner wall of the treatment tank, two first limiting plates are fixedly connected in the mounting groove, and both of the two first limiting plates are ninety-degree sector-shaped blocks; Both sides of the treatment tank are fixedly connected to two side plates respectively, and the sealing assembly is slidably connected in the limiting groove.

[0009] Preferably, the sealing assembly includes a sealing plate, the other side of the sealing plate is fixedly connected to a reinforcing rib, a limiting block is fixedly connected above the reinforcing rib, a rotator is fixedly connected below the sealing plate, the rotator includes a bearing and a rotating shaft, a connecting rod is fixedly connected outside the rotator, and the other end of the connecting rod is fixedly connected to a mounting cylinder; The limiting block is slidably connected in a limiting groove, and the cross-sections of the limiting block and the limiting groove are both T-shaped, and the mounting cylinder is lapped with the mounting assembly.

[0010] Preferably, the mounting assembly includes a top cover, a docking groove is formed outside the top cover, a partition plate is fixedly connected below the top cover, a plug rod is fixedly connected below the partition plate, and a handle is fixedly connected above the top cover; The top cover is located in a through hole, both sealing plates are clamped in the docking groove, the plug rod is lapped in the mounting cylinder, and the lower part of the partition plate is fixedly connected to the top end of the connecting assembly.

[0011] Preferably, the connecting assembly includes a first bracket, two sleeves are clamped in the first bracket, the same rotating rod is sleeved in the two sleeves, two memories are fixedly connected below the rotating rod through a sealing telescopic plate, and the lower parts of the two memories are hinged to another two memories through hinges, a coil spring is arranged outside the hinge, the lower parts of the two memories located below are hinged to the same second bracket through a pin shaft, and filters are slidably connected in all four memories; The first bracket is fixedly connected below the partition plate, and the lower part of the second bracket is fixedly connected to the limiting assembly.

[0012] Preferably, the limiting assembly includes a reinforcing block, the lower part of the reinforcing block is fixedly connected to a fixing plate, the lower part of the fixing plate is fixedly connected to a connecting block through a fixing rod, and two second limiting plates are fixedly connected outside the connecting block; The upper part of the reinforcing block is fixedly connected to the lower part of the second bracket, both second limiting plates are sector-shaped blocks less than ninety degrees, the second limiting plates are located in a mounting groove, and the upper part of the second limiting plate is lapped with the lower part of the first limiting plate.

[0013] Preferably, the memory includes a filter housing, both sides of the filter housing are designed with hollow openings, a slot is formed on one side of the filter housing, and guiding grooves are formed above and below the inner wall of the slot; The upper and lower parts of the filter housing are respectively fixedly connected to the first bracket and the hinge, and the filter is slidably connected in the slot; The filter includes a guiding frame, one side of the guiding frame is fixedly connected with a connecting plate, one side of the connecting plate is fixedly connected with two magnetic blocks, a carrier film is fixedly connected inside the guiding frame, the other side of the guiding frame is fixedly connected with an inserting shell, a groove is formed on the other side of the inserting shell, and a handrail is fixedly connected inside the groove; The magnetic blocks are adsorbed in the inserting slots, the guiding frame is slidably connected in the guiding grooves, the inserting shell is in fit with the inner wall of the inserting slots, and the carrier film is made by blending 80% polyacrylonitrile fiber and 20% viscose fiber.

[0014] A sewage treatment method based on a hollow fiber biofilm includes the following using steps: S1. Insert the biofilm mechanism into the box body mechanism and rotate the biofilm mechanism by 90 degrees to complete the assembly of the biofilm mechanism and the box body mechanism; S2. After the assembly is completed, connect the external sewage tank and the water outlet tank to the box body mechanism to ensure that sewage stably flows into the box body mechanism; S3. When sewage enters the box body mechanism, the biofilm mechanism treats the sewage, and in this process, the biofilm will deform correspondingly when the sewage enters to relieve the water flow pressure; S4. When replacing or cleaning the biofilm mechanism, it is necessary to rotate the biofilm mechanism 90 degrees in the reverse direction, and then it can be taken out from the upper part of the box body mechanism for replacement and cleaning.

[0015] Compared with the prior art, the beneficial effects of the present invention are: 1. The present invention designs a sealing component and a connecting component. Sewage will directly enter the treatment tank along the valve and directly impact the memory and the filter. At this time, the upper memory will deflect along the rotating rod, and the lower memory will deflect along the pin shaft connected to it. Meanwhile, the hinge part under impact will move backward under the action of the water flow impact force, and the telescopic plate will extend as the memory deflects. By this way of deflection displacement, the impact force when the water flow impacts the memory is alleviated. When it is necessary to clean or replace the filter, just rotate the grip counterclockwise. The rotation of the grip will cause the top cover and the isolation plate to drive the insertion rod, and then push the connecting rod and the sealing plate to slide along the limit groove. In this way, the two sealing plates will move away from the docking groove and at the same time release the restriction on the isolation plate. At this time, pull the grip upward, and the entire biofilm mechanism can be taken out of the treatment tank. When replacing or cleaning the memory and the filter, just extract the filter from the memory. First of all, through the deflection displacement method of memory deflection, hinge part movement and telescopic plate extension, the impact force when the water flow impacts the memory can be effectively alleviated, reducing the damage to the biofilm structure caused by the water flow impact and reducing the risk of structural shedding and damage caused by the water flow impact, thus helping to maintain the sewage treatment efficiency. Secondly, when it is necessary to clean or replace the filter, through a series of operations such as rotating the grip counterclockwise, the entire biofilm mechanism can be easily taken out of the treatment tank without large-scale disassembly of the equipment, and the operation is more convenient. Finally, the shedding and damage of the biofilm structure caused by the water flow impact and the pollutant load fluctuation are reduced, and the cost brought by frequent component replacement is also reduced.

[0016] 2. The present invention also designs an installation component and a connecting component. When disassembling, it is necessary to rotate the grip counterclockwise by 90 degrees. At this time, the first limit plate is located in the installation groove and separated from the second limit plate. At the same time, the upper sealing plate is pushed by the insertion rod to drive the connecting rod, the sealing plate and the limit block to move horizontally in the limit groove, so that the sealing plate releases the restriction on the docking groove. In this way, the biofilm mechanism can be pulled out upward, greatly reducing the use difficulty of the device. Similarly, when installing, just insert the biofilm mechanism into the through hole and then rotate it clockwise by 90 degrees. At this time, the insertion rod will pull the sealing plate to fix the docking groove; at the same time, the lower first limit plate will also fix the lower second limit plate. The whole installation process is simple and easy, and also reduces the use difficulty of the device. Since the replacement and cleaning operations are simple and easy, the manpower and material resources input required for large-scale disassembly of the equipment are reduced, and thus the maintenance cost is reduced.

[0017] 3. The present invention also designs a memory and a filter. When removing the filter from the memory, one only needs to grasp the armrest and pull the plug housing along the guiding groove. As the guiding frame gradually slides out along the guiding groove, the disassembly between the filter housing and the guiding frame can be completed. After cleaning or replacing the carrier membrane, the guiding frame can be inserted into the filter housing again to complete the assembly. Since magnetic blocks are provided in the guiding frame, after installation, the magnetic blocks can initially fix the filter housing and the guiding frame. When the device is inserted into the box body mechanism, the plug housings on both sides will contact the inside of the processing box to achieve secondary fixation, thereby ensuring the stability of the device during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic diagram of the overall structure of the present invention; Figure 2 is a schematic diagram of the cross-sectional structure of the box body mechanism of the present invention; Figure 3 is a schematic diagram of the cross-sectional structure of the installation component of the present invention; Figure 4 is a schematic diagram of the connection component structure of the present invention; Figure 5 is an exploded schematic diagram of the limit component of the present invention; Figure 6 is a schematic diagram of the cross-sectional structure of the memory of the present invention; Figure 7 is a schematic diagram of the cross-sectional structure of the outer shell component of the present invention; Figure 8 is a schematic diagram of the seal component structure of the present invention.

[0019] Explanation of the reference numerals in the drawings: 1. Box body mechanism; 2. Biofilm mechanism; 11. Outer shell component; 12. Valve; 13. Side plate; 14. Seal component; 21. Installation component; 22. Connection component; 23. Limit component; 111. Processing box; 112. Through hole; 113. Limit groove; 114. Installation groove; 115. First limit plate; 141. Seal plate; 142. Reinforcing rib; 143. Limit block; 144. Rotator; 145. Connecting rod; 146. Installation cylinder; 211. Top cover; 212. Docking groove; 213. Partition board; 214. Plug rod; 215. Handle; 221. First bracket; 222. Sleeve; 223. Rotating rod; 224. Memory; 225. Filter; 226. Hinge; 227. Second bracket; 228. Telescopic plate; 231. Reinforcement block; 232. Fixed plate; 233. Fixed rod; 234. Connecting block; 235. Second limiting plate; 2241. Filter housing; 2242. Slot; 2243. Guide groove; 2251. Guide frame; 2252. Connecting plate; 2253. Magnetic block; 2254. Carrier membrane; 2255. Insert shell; 2256. Groove; 2257. Handrail. Detailed implementation manner

[0020] As Figures 1 to 8 shown, a sewage treatment structure and treatment method based on a hollow fiber biofilm according to the present invention includes a valve 12, a treatment tank 111 and a side plate 13, and further includes The box body mechanism 1 includes a housing assembly 11, side plates 13 provided on both sides of the housing assembly 11, a plurality of valves 12 connected to the side plates 13, and a sealing assembly 14. Among them, the sealing assembly 14 is located inside the housing assembly 11; and, the biofilm mechanism 2 includes a mounting assembly 21, a connecting assembly 22 connected to the lower part of the mounting assembly 21, and a limiting assembly 23. Among them, the limiting assembly 23 is provided below the connecting assembly 22. By designing the sealing assembly 14 and the connecting assembly 22, sewage will directly enter the treatment tank 111 along the valves 12 and directly impact the memory 224 and the filter 225. At this time, the upper memory 224 will deflect along the rotating rod 223, and the lower memory 224 will deflect along the pin shaft connected to it. At the same time, the hinge 226 part impacted will move backward under the action of the water flow impact force, and the telescopic plate 228 will extend as the memory 224 deflects. By this way of deflection displacement, the impact force when the water flow impacts the memory 224 is alleviated. When it is necessary to clean or replace the filter 225, just rotate the grip 215 counterclockwise. The rotation of the grip 215 will cause the top cover 211 and the isolation plate 213 to drive the insertion rod 214, and then push the connecting rod 145 and the sealing plate 141 to slide along the limiting groove 113. In this way, the two sealing plates 141 will move away from the docking groove 212 and at the same time release the restriction on the isolation plate 213. At this time, pull the grip 215 upward, and the entire biofilm mechanism 2 can be taken out of the treatment tank 111. When replacing or cleaning the memory 224 and the filter 225, just extract the filter 225 from the memory 224. First of all, through the deflection displacement method of the memory 224 deflecting, the hinge 226 part moving, and the telescopic plate 228 extending, the impact force when the water flow impacts the memory 224 can be effectively alleviated, reducing the damage to the biofilm structure caused by the water flow impact and reducing the risk of structural shedding and breakage caused by the water flow impact, thus helping to maintain the sewage treatment efficiency. Secondly, when it is necessary to clean or replace the filter 225, through a series of operations such as rotating the grip 215 counterclockwise, the entire biofilm mechanism 2 can be easily taken out of the treatment tank 111 without large-scale disassembly of the equipment, and the operation is more convenient. Finally, the shedding and breakage of the biofilm structure caused by the water flow impact and the pollutant load fluctuation are reduced, and the cost brought by frequent component replacement is also reduced.

[0021] In an embodiment of the present invention, both sides of the housing assembly 11 are fixedly connected to two side plates 13 respectively, and both sides of the two side plates 13 are respectively communicated with a plurality of valves 12. The upper part of the inner wall of the housing assembly 11 is slidably connected to two sealing assemblies 14. The lower part of the mounting assembly 21 is fixedly connected to the connecting assembly 22. The bottom end of the connecting assembly 22 is fixedly connected to the limiting assembly 23. The mounting assembly 21 is clamped above the housing assembly 11. The mounting assembly 21 and the two sealing assemblies 14 are clamped with each other. The limiting assembly 23 is clamped below the inner wall of the housing assembly 11. By arranging a torsion spring outside the hinge 226, when the device is closed to replace the memory 224 and the filter 225, the torsion spring will drive the upper and lower memories 224 to reset, preventing them from deflecting and being difficult to recover due to the impact of water flow again, thereby ensuring that the memory 224 can be easily taken out along the through hole 112.

[0022] In an embodiment of the present invention, the housing assembly 11 includes a processing box 111. A through hole 112 is provided above the processing box 111. Two limiting grooves 113 are provided above the inner wall of the processing box 111. An installation groove 114 is provided below the inner wall of the processing box 111. Two first limiting plates 115 are fixedly connected in the installation groove 114, and both of the two first limiting plates 115 are fan-shaped blocks of 90 degrees. Two sides of the processing box 111 are respectively fixedly connected to two side plates 13. The sealing assembly 14 is slidably connected in the limiting groove 113. The sealing assembly 14 includes a sealing plate 141. The other side of the sealing plate 141 is fixedly connected to a reinforcing rib 142. A limiting block 143 is fixedly connected above the reinforcing rib 142. A rotator 144 is fixedly connected below the sealing plate 141. The rotator 144 includes a bearing and a rotating shaft. A connecting rod 145 is fixedly connected to the outside of the rotator 144. The other end of the connecting rod 145 is fixedly connected to an installation cylinder 146. The limiting block 143 is slidably connected in the limiting groove 113. The cross-sections of the limiting block 143 and the limiting groove 113 are both T-shaped. The installation cylinder 146 is lapped with the installation assembly 21. By designing the installation assembly 21 and the connection assembly 22, during disassembly, it is necessary to rotate the grip 215 counterclockwise by 90 degrees. At this time, the first limiting plate 115 is located in the installation groove 114 and separated from the second limiting plate 235. At the same time, the upper sealing plate 141 is pushed by the insertion rod 214 to drive the connecting rod 145, the sealing plate 141, and the limiting block 143 to move horizontally in the limiting groove 113, so that the sealing plate 141 is loosened from the restriction on the docking groove 212. In this way, the biofilm mechanism 2 can be pulled out upward, greatly reducing the use difficulty of the device. Similarly, during installation, only need to insert the biofilm mechanism 2 into the through hole 112 and then rotate it clockwise by 90 degrees. At this time, the insertion rod 214 will pull the sealing plate 141 to fix the docking groove 212. At the same time, the lower first limiting plate 115 will also fix the lower second limiting plate 235. The entire installation process is simple and easy, and also reduces the use difficulty of the device. Since the replacement and cleaning operations are simple, the manpower and material resources required for large-scale disassembly of the equipment are reduced, thereby reducing the maintenance cost.

[0023] As another embodiment of the present invention, the installation component 21 includes a top cover 211, a docking groove 212 is formed outside the top cover 211, a partition plate 213 is fixedly connected below the top cover 211, a plug rod 214 is fixedly connected below the partition plate 213, a handle 215 is fixedly connected above the top cover 211, the top cover 211 is located in the through hole 112, both sealing plates 141 are clamped in the docking groove 212, the plug rod 214 is lapped in the installation cylinder 146, the lower part of the partition plate 213 is fixedly connected to the top end of the connection component 22, the connection component 22 includes a first bracket 221, two sleeves 222 are clamped in the first bracket 221, the same rotating rod 223 is sleeved in the two sleeves 222, the lower part of the rotating rod 223 is fixedly connected with two memories 224 through a sealing telescopic plate 228, and the lower parts of the two memories 224 are hinged to another two memories 224 through hinges 226. A coil spring is arranged outside the hinge 226. The lower parts of the two memories 224 located below are hinged to the same second bracket 227 through a pin shaft. Filters 225 are slidably connected in all four memories 224. The first bracket 221 is fixedly connected below the partition plate 213. The lower part of the second bracket 227 is fixedly connected to the limiting component 23. By rotating the plug rod 214, the connecting rod 145 and the sealing plate 141 are pulled, so that the limiting block 143 slides along the limiting groove 113. The device fixes the top cover 211 and the partition plate 213 by moving the sealing plate 141. At the same time, when the two sealing plates 141 move towards each other, the gap between the through hole 112 and the top cover 211 will be covered. In this way, not only the fixing effect of the top cover 211 is achieved, but also the sewage can be prevented from overflowing along the gap between the through hole 112 and the top cover 211, ensuring the sealing performance of the device.

[0024] As another embodiment of the present invention, the limiting component 23 includes a reinforcement block 231. The lower part of the reinforcement block 231 is fixedly connected to a fixing plate 232. The lower part of the fixing plate 232 is fixedly connected to a connecting block 234 through a fixing rod 233. Two second limiting plates 235 are fixedly connected to the outside of the connecting block 234. The upper part of the reinforcement block 231 is fixedly connected to the lower part of the second bracket 227. Both of the two second limiting plates 235 are fan-shaped blocks with an angle less than 90 degrees. The second limiting plates 235 are located in the installation groove 114. The upper part of the second limiting plate 235 is lapped with the lower part of the first limiting plate 115. The memory 224 includes a filter housing 2241. Both sides of the filter housing 2241 are designed with hollow openings. A slot 2242 is opened on one side of the filter housing 2241. Guide grooves 2243 are opened on the upper inner wall and the lower inner wall of the slot 2242. The upper part and the lower part of the filter housing 2241 are respectively fixedly connected to the first bracket 221 and the hinge 226. The filter 225 is slidably connected in the slot 2242. By designing the memory 224 and the filter 225, when the filter 225 is removed from the memory 224, only need to grasp the armrest 2257 and pull the insertion shell 2255 along the guide groove 2243. As the guide frame 2251 gradually slides out along the guide groove 2243, the disassembly between the filter housing 2241 and the guide frame 2251 can be completed. After cleaning or replacing the carrier film 2254, insert the guide frame 2251 into the filter housing 2241 again to complete the assembly. Since a magnetic block 2253 is arranged in the guide frame 2251, after the installation is completed, the magnetic block 2253 can initially fix the filter housing 2241 and the guide frame 2251. When the device is inserted into the box body mechanism 1, the insertion shells 2255 on both sides will contact the inside of the processing box 111 to achieve secondary fixation, thereby ensuring the stability of the device during use; The filter 225 includes a guiding frame 2251. One side of the guiding frame 2251 is fixedly connected with a connecting plate 2252. One side of the connecting plate 2252 is fixedly connected with two magnetic blocks 2253. A carrier membrane 2254 is fixedly connected inside the guiding frame 2251. The other side of the guiding frame 2251 is fixedly connected with an insertion shell 2255. A groove 2256 is formed on the other side of the insertion shell 2255. A handrail 2257 is fixedly connected inside the groove 2256. The magnetic blocks 2253 are adsorbed in the slot 2242. The guiding frame 2251 is slidably connected in the guiding groove 2243. The insertion shell 2255 is in contact with the inner wall of the slot 2242. The carrier membrane 2254 is made by blending 80% polyacrylonitrile fiber and 20% viscose fiber. The carrier membrane 2254 is composed of 80% polyacrylonitrile fiber and 20% viscose fiber through blending processing, and its surface is compounded with modified activated carbon fiber, acrylic fiber and polypropylene fiber after modification. This structure provides a stable living environment for microorganisms, and the microorganisms can attach to the surface of the carrier and form a biofilm. The microorganisms use organic pollutants as an energy source and degrade the organic pollutants in the water body through their own metabolism, thereby improving the sewage treatment efficiency. At the same time, acrylic fiber has excellent elasticity and light resistance, and polypropylene fiber has high strength and wear resistance. After the two are compounded with activated carbon fiber, the mechanical strength and stability of the carrier can be significantly improved, and its service life can be extended accordingly.

[0025] Working principle: This embodiment provides a sewage treatment structure and treatment method based on a hollow fiber biofilm. When in use, sewage will directly enter the treatment tank 111 along the valve 12 and directly impact the memory 224 and the filter 225. At this time, the upper memory 224 will deflect along the rotating rod 223, and the lower memory 224 will deflect along the pin shaft connected thereto. At the same time, the hinge 226 part under impact will move backward under the action of the water flow impact force, and the telescopic plate 228 will extend as the memory 224 deflects, so as to relieve the impact force when the water flow impacts the memory 224 in the form of deflection displacement. When it is necessary to clean or replace the filter 225, the grip 215 needs to be rotated counterclockwise by 90 degrees, so that the top cover 211 and the isolation plate 213 drive the insertion rod 214 to push the connecting rod 145 and the sealing plate 141 to slide along the limiting groove 113. In this way, the two sealing plates 141 will move away from the docking groove 212 and at the same time release the restriction on the isolation plate 213. At this time, by pulling up the grip 215, the entire biofilm mechanism 2 can be taken out of the treatment tank 111. When replacing or cleaning the memory 224 and the filter 225, the filter 225 can be simply extracted from the memory 224; During disassembly, the grip 215 needs to be rotated counterclockwise by 90 degrees. At this time, the first limiting plate 115 is located in the installation groove 114 and separated from the second limiting plate 235. Meanwhile, the upper sealing plate 141 is pushed by the insertion rod 214, driving the connecting rod 145 and the limiting block 143 to move horizontally in the limiting groove 113, so that the sealing plate 141 is loosened from the restriction on the docking groove 212. At this time, the biofilm mechanism 2 can be pulled out upward, reducing the difficulty of using the device. Similarly, during installation, only need to insert the biofilm mechanism 2 into the through hole 112, and then rotate it clockwise by 90 degrees. The insertion rod 214 will pull the sealing plate 141 to fix the docking groove 212. At the same time, the lower first limiting plate 115 will also fix the lower second limiting plate 235, also reducing the difficulty of using the device; When removing the filter 225 from the memory 224, just grasp the armrest 2257 and pull the plug housing 2255 along the guide groove 2243. As the guide frame 2251 gradually slides out along the guide groove 2243, the separation of the filter housing 2241 and the guide frame 2251 can be completed. After cleaning or replacing the carrier membrane 2254, insert the guide frame 2251 into the filter housing 2241 again to complete the assembly.

[0026] The embodiments disclosed in the present invention are preferred embodiments, but not limited thereto. Those of ordinary skill in the art can easily understand the spirit of the present invention based on the above embodiments and make different extensions and changes. However, as long as they do not depart from the spirit of the present invention, they are within the protection scope of the present invention.

Claims

1. A sewage treatment structure based on a hollow fiber biofilm, comprising a valve (12), a treatment tank (111) and a side plate (13), characterized in that, It further includes a box body mechanism (1), comprising a housing assembly (11), side plates (13) arranged on both sides of the housing assembly (11), a plurality of valves (12) connected to the side plates (13), and a sealing assembly (14), wherein the sealing assembly (14) is located inside the housing assembly (11); and a biofilm mechanism (2), comprising a mounting assembly (21), a connecting assembly (22) connected to the lower part of the mounting assembly (21), and a limiting assembly (23), wherein the limiting assembly (23) is arranged below the connecting assembly (22).

2. The sewage treatment structure based on the hollow fiber biofilm according to claim 1, wherein Both sides of the housing assembly (11) are fixedly connected to two side plates (13) respectively, and both sides of the two side plates (13) are respectively communicated with a plurality of valves (12), and the upper part of the inner wall of the housing assembly (11) is slidably connected to two sealing assemblies (14).

3. The sewage treatment structure based on the hollow fiber biofilm according to claim 2, wherein, The lower part of the mounting assembly (21) is fixedly connected to the connecting assembly (22), and the bottom end of the connecting assembly (22) is fixedly connected to the limiting assembly (23); The mounting assembly (21) is clamped above the housing assembly (11), the mounting assembly (21) and the two sealing assemblies (14) are clamped with each other, and the limiting assembly (23) is clamped below the inner wall of the housing assembly (11).

4. The sewage treatment structure based on the hollow fiber biofilm according to claim 3, characterized in that, The housing assembly (11) includes a processing box (111), a through hole (112) is opened above the processing box (111), two limiting grooves (113) are opened above the inner wall of the processing box (111), a mounting groove (114) is opened below the inner wall of the processing box (111), and two first limiting plates (115) are fixedly connected in the mounting groove (114), and both of the two first limiting plates (115) are fan-shaped blocks of ninety degrees; Both sides of the processing box (111) are fixedly connected to two side plates (13) respectively, and the sealing assembly (14) is slidably connected in the limiting groove (113).

5. The sewage treatment structure based on a hollow fiber biofilm according to claim 4, characterized in that, The sealing assembly (14) includes a sealing plate (141), the other side of the sealing plate (141) is fixedly connected to a reinforcing rib (142), a limiting block (143) is fixedly connected above the reinforcing rib (142), a rotator (144) is fixedly connected below the sealing plate (141), the rotator (144) includes a bearing and a rotating shaft, a connecting rod (145) is fixedly connected outside the rotator (144), and the other end of the connecting rod (145) is fixedly connected to a mounting cylinder (146); The limiting block (143) is slidably connected in the limiting groove (113), and the cross-sections of the limiting block (143) and the limiting groove (113) are both T-shaped, and the mounting cylinder (146) is lapped with the mounting assembly (21).

6. The sewage treatment structure based on a hollow fiber biofilm according to claim 5, wherein, The mounting assembly (21) includes a top cover (211), a docking groove (212) is opened outside the top cover (211), a partition plate (213) is fixedly connected below the top cover (211), a plug rod (214) is fixedly connected below the partition plate (213), and a handle (215) is fixedly connected above the top cover (211); The top cover (211) is located within the through hole (112), both of the sealing plates (141) are snap-fitted within the docking groove (212), the plug rod (214) is lapped within the mounting cylinder (146), and the lower part of the partition plate (213) is fixedly connected to the top end of the connection assembly (22).

7. The sewage treatment structure based on a hollow fiber biofilm according to claim 6, characterized in that, The connection assembly (22) includes a first bracket (221), within which two sleeves (222) are snap-fitted. A same rotating rod (223) is sleeved within the two sleeves (222). The lower part of the rotating rod (223) is fixedly connected to two memory units (224) through a sealed telescopic plate (228). The lower parts of the two memory units (224) are hinged to another two memory units (224) through hinges (226). A coil spring is arranged outside the hinges (226). The lower parts of the two memory units (224) located below are hinged to the same second bracket (227) through pin shafts. Filters (225) are slidably connected within all four memory units (224); The first bracket (221) is fixedly connected to the lower part of the partition plate (213), and the lower part of the second bracket (227) is fixedly connected to the limiting assembly (23).

8. The sewage treatment structure based on a hollow fiber biofilm according to claim 7, characterized in that, The limiting assembly (23) includes a reinforcement block (231), the lower part of the reinforcement block (231) is fixedly connected to a fixing plate (232), the lower part of the fixing plate (232) is fixedly connected to a connection block (234) through a fixing rod (233), and two second limiting plates (235) are fixedly connected to the outside of the connection block (234); The upper part of the reinforcement block (231) is fixedly connected to the lower part of the second bracket (227). Both of the second limiting plates (235) are sector-shaped blocks with an angle less than 90 degrees. The second limiting plates (235) are located within the mounting groove (114), and the upper parts of the second limiting plates (235) are lapped with the lower parts of the first limiting plates (115).

9. The sewage treatment structure based on the hollow fiber biofilm according to claim 8, characterized in that, The memory unit (224) includes a filter housing (2241), both sides of which are designed with openings. A slot (2242) is formed on one side of the filter housing (2241), and guide grooves (2243) are formed on the upper and lower inner walls of the slot (2242); The upper and lower parts of the filter housing (2241) are respectively fixedly connected to the first bracket (221) and the hinge (226), and the filter (225) is slidably connected within the slot (2242); The filter (225) includes a guide frame (2251), a connection plate (2252) is fixedly connected to one side of the guide frame (2251), two magnetic blocks (2253) are fixedly connected to one side of the connection plate (2252), a carrier film (2254) is fixedly connected within the guide frame (2251), an insertion shell (2255) is fixedly connected to the other side of the guide frame (2251), a groove (2256) is formed on the other side of the insertion shell (2255), and a handrail (2257) is fixedly connected within the groove (2256); The magnetic block (2253) is adsorbed in the slot (2242), the guiding frame (2251) is slidably connected in the guiding groove (2243), the plug housing (2255) is in fit with the inner wall of the slot (2242), and the carrier film (2254) is a blended product of 80% polyacrylonitrile fiber and 20% viscose fiber.

10. A sewage treatment method based on a hollow fiber biofilm, based on the sewage treatment structure based on a hollow fiber biofilm described in claim 9, characterized in that, It includes the following usage steps: S1. Insert the biofilm mechanism (2) into the box body mechanism (1), and rotate the biofilm mechanism (2) by 90 degrees to complete the assembly of the biofilm mechanism (2) and the box body mechanism (1); S2. After the assembly is completed, connect the external sewage tank and the water outlet tank to the box body mechanism (1) to ensure that the sewage stably flows into the box body mechanism (1); S3. When the sewage enters the box body mechanism (1), the biofilm mechanism (2) treats the sewage, and during this process, the biofilm will deform correspondingly when the sewage enters to relieve the water flow pressure; S4. When replacing or cleaning the biofilm mechanism (2), it is necessary to rotate the biofilm mechanism (2) reversely by 90 degrees, and then it can be taken out from the upper part of the box body mechanism (1) for replacement and cleaning.

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