A sewage treatment process and system

Abstract

The present application relates to sewage treatment technical field, specifically a kind of sewage treatment process and treatment system, comprising the following steps: step one: municipal domestic sewage, industrial wastewater is collected by sewage collection device, and sewage collection device includes sewage pipe network, pump station and storage regulating tank;Step two: the collected sewage is carried out primary treatment, using sewage primary treatment device, remove the solid waste such as large particle and suspended solids in sewage;Step three: the sewage after primary treatment is carried out biochemical treatment, using sewage biochemical treatment device, remove the harmful substances such as organic matter, nitrogen, phosphorus contained in sewage;Step four: the sewage after biochemical treatment is carried out sludge treatment, using sludge treatment device, the sludge in sewage is separated from water by centrifugal method, and after sludge drying, it is made to reach discharge standard by drying method;Step five: the treated sewage is discharged by sewage discharge device, improves treatment effect.

Description

A wastewater treatment process and system Technical Field

[0001] This invention relates to the field of wastewater treatment technology, specifically a wastewater treatment process and system. Background Technology

[0002] Wastewater treatment systems are equipment or processes used to treat wastewater, aiming to remove or reduce harmful substances in wastewater to achieve environmental protection and public health goals. Wastewater treatment involves both physical and biological methods, with physical methods including sedimentation and filtration.

[0003] During filtration, it is inevitable that solid waste in the wastewater will accumulate on the filter plate, causing the filter holes to become clogged. The traditional approach is to use a scraper to remove the solid waste from the filter plate. Although this method can reopen the filter holes, when there is a lot of solid waste in the wastewater, the waste will accumulate on the filter plate in a short time, causing the filter holes to be quickly blocked and affecting the filtration speed. Summary of the Invention

[0004] The purpose of this invention is to provide a wastewater treatment process and system to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A wastewater treatment process includes the following steps:

[0007] Step 1: Urban domestic sewage and industrial wastewater are collected by sewage collection devices, which include sewage pipe networks, pumping stations, and storage and equalization tanks;

[0008] Step 2: Perform primary treatment on the collected wastewater using a primary wastewater treatment device to remove large particles and suspended solids from the wastewater.

[0009] Step 3: The wastewater after primary treatment is subjected to biological treatment using a wastewater biological treatment device to remove organic matter, nitrogen, phosphorus and other harmful substances contained in the wastewater;

[0010] Step 4: The wastewater after biochemical treatment is treated to remove sludge. A sludge treatment device is used to separate the sludge and water in the wastewater by centrifugation. After the sludge is dried, it is dried to meet the discharge standards.

[0011] Step 5: Discharge the treated wastewater through the wastewater discharge device.

[0012] A treatment system is applied to the aforementioned wastewater treatment process, comprising a wastewater collection device, a primary wastewater treatment device, a biochemical wastewater treatment device, a sludge treatment device, and a wastewater discharge device, wherein the wastewater collection device, the primary wastewater treatment device, the biochemical wastewater treatment device, the sludge treatment device, and the wastewater discharge device communicate with an automatic control system.

[0013] The primary wastewater treatment device includes:

[0014] A filter housing, wherein a partition is detachably installed inside the filter housing, and the partition is provided with multiple filter holes;

[0015] A horizontal plate is slidably installed inside the filter box, and a through groove is provided on the horizontal plate;

[0016] A connecting plate assembly is disposed on the horizontal plate. The connecting plate assembly can remain separated from the partition and allow the through groove to be open when the horizontal plate moves downward. The connecting plate assembly can also slide and fit with the partition and close the through groove when the horizontal plate moves upward.

[0017] The brush roller is capable of removing solid waste placed on the cross plate when the cross plate rises to the end of its stroke.

[0018] A power assembly, mounted on the filter housing, includes a drive structure, a primary transmission structure, and a secondary transmission structure. The primary transmission structure is connected to the horizontal plate, and the secondary transmission structure is connected to the brush roller. The drive structure can alternately drive the primary and secondary transmission structures.

[0019] As a further embodiment of the present invention: the connecting plate assembly includes a sealing plate arranged parallel to the horizontal plate, and the sealing plate is provided with a pad adapted to the through groove;

[0020] The connecting plate assembly further includes a scraper that is slidably disposed at one end of the horizontal plate facing the partition, and a pull rod is rotatably mounted on the scraper, with the end of the pull rod away from the scraper being rotatably connected to the sealing plate;

[0021] The sealing plate is provided with a sliding connection part, which is slidably connected to the guide part provided on the horizontal plate.

[0022] As a further embodiment of the present invention: the sealing plate and the horizontal plate are connected by an elastic locking assembly;

[0023] The elastic locking assembly includes two locking members symmetrically arranged on the sealing plate, and a crossbar is connected between the two locking members. The crossbar is rotatably connected to the pull rod.

[0024] The locking member has two grooves along its length, and the grooves are adapted to the elastic telescopic structure provided on the horizontal plate.

[0025] As a further embodiment of the present invention: the elastic telescopic structure includes a fixed sleeve fixedly installed on the horizontal plate, a telescopic rod slidably installed inside the fixed sleeve, and a pulley adapted to the groove is rotatably installed at one end of the telescopic rod facing the locking member;

[0026] A spring is also fitted on the telescopic rod. One end of the spring is connected to the inner wall of the fixed sleeve, and the other end is connected to a limiting ring formed on the telescopic rod.

[0027] As a further embodiment of the present invention: the drive structure includes a drive device fixedly installed on the filter housing, and the output shaft of the drive device is connected to a Maltese cross movement kit disposed on the filter housing;

[0028] The Maltese cross mechanism kit includes a drive wheel rotatably mounted on the filter housing and connected to the output shaft of the drive unit, the drive wheel being adapted to a first driven wheel and a second driven wheel rotatably mounted on the filter housing;

[0029] The first driven wheel is connected to the first transmission structure via a first belt, and the second driven wheel is connected to the second transmission structure via a bevel gear set and a second belt.

[0030] As a further embodiment of the present invention: the first transmission structure includes two transmission wheels rotatably mounted on the filter box, a transmission belt is sleeved between the two transmission wheels, a convex shaft is fixed on the transmission belt, and the shaft of one of the transmission wheels is connected to the first belt.

[0031] A connecting frame is fixed on the horizontal plate, and a first fitting groove is provided on the connecting frame. The convex shaft slides in conjunction with the first fitting groove.

[0032] As a further embodiment of the present invention: the brush roller is connected to the second transmission structure via a transverse component;

[0033] The transverse component includes a bracket mounted on the filter housing, a follower frame rotatably connected to the brush roller mounted on the bracket, and sliders on both sides of the follower frame slidingly engaging with side grooves mounted on the bracket.

[0034] The follower frame is also provided with a second fitting groove along its length, and the second fitting groove is in sliding fit with the second transmission structure;

[0035] The lateral movement assembly also includes a meshing structure for driving the brush roller to rotate.

[0036] As a further embodiment of the present invention: the meshing structure includes a gear fixedly connected coaxially to the brush roller, and the gear meshes with a rack plate connected to the filter housing.

[0037] Compared with the prior art, the beneficial effects of the present invention are:

[0038] The horizontal plate and connecting plate assembly are designed so that the horizontal plate and the sealing plate separate when they move downwards, allowing sewage and solid waste to enter the upper part of the horizontal plate through the channel. The scraper and the partition plate are also separated, preventing solid waste on the partition plate from being pushed to the bottom of the filter box. When the horizontal plate and the sealing plate move upwards, they come together, filtering sewage through the connecting holes and scooping up solid waste floating in the sewage. At the same time, the scraper and the partition plate come together to scrape off solid waste on the partition plate. The two work together to reduce the filter load on the filter holes and effectively improve the filtration effect.

[0039] By using a power assembly and a transverse movement assembly, the horizontal plate and the brush roller can move alternately, which improves the timing logic of their movements. The alternating movement of the two can effectively remove solid waste from the horizontal plate and the scraper under the action of the brush roller, preventing these solid wastes from being carried back into the sewage as the horizontal plate and the scraper descend, thus improving the filtration effect of sewage to a certain extent. Attached Figure Description

[0040] Figure 1 is a flowchart of the wastewater treatment process.

[0041] Figure 2 is a system diagram of one embodiment of the processing system.

[0042] Figure 3 is a schematic diagram of the primary wastewater treatment device in one embodiment of the treatment system.

[0043] Figure 4 is a schematic diagram of the primary wastewater treatment device from another angle in one embodiment of the treatment system.

[0044] Figure 5 is an exploded view of the power component in one embodiment of the processing system.

[0045] Figure 6 is a schematic diagram of the structure of the horizontal plate and connecting plate assembly in one embodiment of the processing system.

[0046] Figure 7 is a schematic diagram of the connection relationship between the horizontal plate and the connecting plate group in one embodiment of the processing system.

[0047] Figure 8 is an enlarged view of the structure at point A in Figure 7.

[0048] Figure 9 is an exploded view of the horizontal plate and the sealing plate in one embodiment of the processing system.

[0049] Figure 10 is an exploded view of the transverse component in one embodiment of the processing system.

[0050] In the diagram: 1. Filter housing; 2. Partition plate; 201. Filter holes; 3. Drive unit; 4. Drive wheel; 5. Driven wheel No. 1; 6. Belt No. 1; 7. Transmission wheel; 8. Transmission belt; 9. Cam shaft; 10. Connecting frame; 1001. Fitting groove No. 1; 11. Horizontal plate; 1101. Through groove; 1102. Guide part; 12. Scraper; 13. Sealing plate; 1301. Pad plate; 1302. Sliding connection part ; 14. Pull rod; 15. Locking component; 1501. Groove; 16. Crossbar; 17. Pulley; 18. Fixing sleeve; 19. Telescopic rod; 20. Spring; 21. Second driven wheel; 22. Bevel gear set; 23. Second belt; 24. Follower frame; 2401. Second fitting groove; 2402. Slider; 25. Bracket; 2501. Side groove; 26. Brush roller; 27. Gear; 28. Rack plate. Detailed Implementation

[0051] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0052] Furthermore, elements in this invention are referred to as being "fixed to" or "set on" another element, which may be directly on the other element or may also include an intervening element. When an element is considered to be "connected" to another element, it may be directly connected to the other element or may also include an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementations.

[0053] Please refer to Figure 1. In this embodiment of the invention, a wastewater treatment process includes the following steps:

[0054] Step 1: Urban domestic sewage and industrial wastewater are collected by sewage collection devices, which include sewage pipe networks, pumping stations, and storage and equalization tanks;

[0055] Step 2: Perform primary treatment on the collected wastewater using a primary wastewater treatment device to remove large particles and suspended solids from the wastewater.

[0056] Step 3: The wastewater after primary treatment is subjected to biological treatment using a wastewater biological treatment device to remove organic matter, nitrogen, phosphorus and other harmful substances contained in the wastewater;

[0057] Step 4: The wastewater after biochemical treatment is treated to remove sludge. A sludge treatment device is used to separate the sludge and water in the wastewater by centrifugation. After the sludge is dried, it is dried to meet the discharge standards.

[0058] Step 5: Discharge the treated wastewater through the wastewater discharge device.

[0059] Please refer to Figures 2 to 10. A treatment system is applied to the aforementioned wastewater treatment process, including a wastewater collection device, a primary wastewater treatment device, a biochemical wastewater treatment device, a sludge treatment device, and a wastewater discharge device. The wastewater collection device, the primary wastewater treatment device, the biochemical wastewater treatment device, the sludge treatment device, and the wastewater discharge device communicate with an automatic control system.

[0060] The primary wastewater treatment device includes a filter box 1, a horizontal plate 11, a connecting plate assembly, a brush roller 26, and a power assembly. When the horizontal plate 11 and the sealing plate 13 move downwards, they separate, allowing wastewater and solid waste to enter the upper part of the horizontal plate 11 through the channel 1101. The scraper 12 separates from the partition plate 2, preventing solid waste on the partition plate 2 from being pushed to the bottom of the filter box 1. When the horizontal plate 11 and the sealing plate 13 move upwards, they come together, filtering wastewater through the connecting holes and removing floating solid waste. Simultaneously, the scraper 12, in contact with the partition plate 2, scrapes away solid waste on the partition plate 2. The two work together to reduce the filtration load on the filter holes 201 and effectively improve the filtration effect.

[0061] Specifically, the filter box 1 is equipped with a detachable partition 2, and the partition 2 is provided with a plurality of filter holes 201.

[0062] The horizontal plate 11 is slidably installed inside the filter box 1, and a through groove 1101 is provided on the horizontal plate 11;

[0063] The connecting plate assembly is disposed on the horizontal plate 11. When the horizontal plate 11 moves downward, the connecting plate assembly can remain separated from the partition plate 2 and allow the through groove 1101 to be open. When the horizontal plate 11 moves upward, the connecting plate assembly can slide and adhere to the partition plate 2 to close the through groove 1101.

[0064] The connecting plate assembly includes a sealing plate 13 arranged parallel to the horizontal plate 11, and a pad 1301 adapted to the through groove 1101 is provided on the sealing plate 13;

[0065] The connecting plate assembly also includes a scraper 12 slidably disposed at one end of the horizontal plate 11 facing the partition 2, and a pull rod 14 is rotatably mounted on the scraper 12, with one end of the pull rod 14 away from the scraper 12 being rotatably connected to the sealing plate 13.

[0066] The sealing plate 13 is provided with a sliding connection part 1302, which is slidably connected to the guide part 1102 provided on the horizontal plate 11.

[0067] The sealing plate 13 and the horizontal plate 11 are connected by an elastic locking assembly. The elastic locking assembly includes two locking members 15 symmetrically arranged on the sealing plate 13. A horizontal bar 16 is connected between the two locking members 15. The horizontal bar 16 is rotatably connected to the pulling rod 14.

[0068] The locking member 15 is provided with two grooves 1501 along its length direction. The grooves 1501 are adapted to the elastic telescopic structure provided on the horizontal plate 11. The elastic telescopic structure includes a fixed sleeve 18 fixedly installed on the horizontal plate 11. A telescopic rod 19 is slidably installed in the fixed sleeve 18. A pulley 17 adapted to the grooves 1501 is rotatably installed at one end of the telescopic rod 19 facing the locking member 15.

[0069] A spring 20 is also fitted onto the telescopic rod 19. One end of the spring 20 is connected to the inner wall of the fixed sleeve 18, and the other end is connected to a limiting ring formed on the telescopic rod 19.

[0070] For ease of understanding, the following explanation is given with the horizontal plate 11 at its highest point of travel as the initial state:

[0071] In this state, the sealing plate 13 and the horizontal plate 11 are separated. At this time, the through groove 1101 on the sealing plate 13 is open, and the scraper 12 is pulled by the pull rod 14 and is separated from the partition 2. At this time, the pulley 17 is in the upper groove 1501, and the horizontal plate 11 and the sealing plate 13 will move downward. During the downward movement, the fixed waste in the sewage can move through the through groove 1101 to the upper part of the horizontal plate 11. At the same time, the waste filtered out by the sewage flowing through the partition 2 accumulates on the partition 2. When the scraper 12 moves downward, it pushes the fixed waste on the partition 2 to the bottom of the filter box 1. As the horizontal plate 11 moves downward, the locking member 15 and the bottom of the filter box 1 are locked. During the bonding process, the horizontal plate 11 continues to move, while the locking member 15 and the sealing plate 13 move relative to the horizontal plate 11, causing the pulley 17 to move from the upper groove 1501 to the lower groove 1501. At this time, the sealing plate 13 and the horizontal plate 11 are in a bonding state, thus sealing the through groove 1101. When the sealing plate 13 moves upward, it will push the scraper 12 toward the partition 2 through the pull rod 14 until the scraper 12 and the partition 2 are bonded. At this time, when the horizontal plate 11 moves upward, it can, on the one hand, retrieve the solid waste floating in the sewage, and on the other hand, scrape the solid waste accumulated on the partition 2 upward, avoiding the solid waste from clogging the filter holes 201 and causing the filter holes 201 to reduce the filtration effect.

[0072] Furthermore, the horizontal plate 11 and the sealing plate 13 are provided with coaxial connecting holes, and the diameter of the connecting holes is larger than that of the filter holes 201. This allows the sewage located above the horizontal plate 11 to enter the area below the horizontal plate 11 and the sealing plate 13 through the connecting holes when the horizontal plate 11 and the sealing plate 13 are in contact, thereby enabling the retrieval of solid particles floating in the sewage. This complements the filtration effect of the partition plate 2, reducing the filtration load of the filter holes 201 while improving the filtration effect on the sewage.

[0073] Furthermore, when the horizontal plate 11 and the sealing plate 13 rise to the end of their stroke, the sliding connection 1302 will engage with the protrusion on the filter box 1, causing the horizontal plate 11 to move relative to the sealing plate 13 until the horizontal plate 11 and the sealing plate 13 separate. At this time, the through groove 1101 is opened, allowing the horizontal plate 11 and the sealing plate 13 to return to their initial state, so that secondary retrieval and scraping operations can be performed.

[0074] With the above configuration, the horizontal plate 11 and the sealing plate 13 separate when they move downwards, allowing sewage and solid waste to enter the upper part of the horizontal plate 11 through the channel 1101. The scraper 12 separates from the partition plate 2, preventing solid waste on the partition plate 2 from being pushed to the bottom of the filter box 1. When the horizontal plate 11 and the sealing plate 13 move upwards, they come together, filtering sewage through the connecting holes and retrieval of solid waste floating in the sewage. At the same time, the scraper 12 comes into contact with the partition plate 2, scraping off the solid waste on the partition plate 2. The two work together to reduce the filtration load on the filter holes 201 and effectively improve the filtration effect.

[0075] Please refer to Figures 2, 3, 5, and 10. The brush roller 26 is able to remove solid waste placed on the horizontal plate 11 when the horizontal plate 11 rises to the end of its stroke.

[0076] The power assembly is mounted on the filter housing 1. The power assembly includes a drive structure, a first transmission structure and a second transmission structure. The first transmission structure is connected to the horizontal plate 11, and the second transmission structure is connected to the brush roller 26. The drive structure can alternately drive the first transmission structure and the second transmission structure to move.

[0077] The drive structure includes a drive device 3 fixedly installed on the filter housing 1, and the output shaft of the drive device 3 is connected to the Maltese cross mechanism kit set on the filter housing 1.

[0078] The Maltese cross movement kit includes a drive wheel 4 rotatably mounted on the filter housing 1 and connected to the output shaft of the drive device 3. The drive wheel 4 is adapted to a first driven wheel 5 and a second driven wheel 21 rotatably mounted on the filter housing 1.

[0079] The first driven wheel 5 is connected to the first transmission structure via the first belt 6, and the second driven wheel 21 is connected to the second transmission structure via the bevel gear set 22 and the second belt 23;

[0080] The first transmission structure includes two transmission wheels 7 rotatably mounted on the filter box 1, a transmission belt 8 is sleeved between the two transmission wheels 7, a convex shaft 9 is fixed on the transmission belt 8, and the shaft of one of the transmission wheels 7 is connected to the first belt 6.

[0081] A connecting frame 10 is fixed on the horizontal plate 11. A first fitting groove 1001 is provided on the connecting frame 10. The convex shaft 9 is slidably engaged with the first fitting groove 1001.

[0082] The brush roller 26 is connected to the second transmission structure via a transverse component;

[0083] The transverse component includes a bracket 25 disposed on the filter housing 1. The bracket 25 is provided with a follower frame 24 rotatably connected to the brush roller 26. The follower frame 24 has sliders 2402 on both sides, and the sliders 2402 are slidably engaged with the side grooves 2501 disposed on the bracket 25.

[0084] The follower frame 24 is also provided with a second fitting groove 2401 along its length direction, and the second fitting groove 2401 is in sliding fit with the second transmission structure;

[0085] The transverse assembly also includes a gearing structure for driving the brush roller 26 to rotate. The gearing structure includes a gear 27 that is coaxially and fixedly connected to the brush roller 26. The gear 27 meshes with a rack plate 28 connected to the filter housing 1.

[0086] When in use, the control drive device 3 operates. At this time, the output shaft of the drive device 3 will drive the first transmission structure and the second transmission structure to move through the driving wheel 4, the first driven wheel 5, and the second driven wheel 21 respectively. Specifically, when the first transmission structure moves, it can drive the horizontal plate 11 to perform a lifting action once. When the second transmission structure moves, it can drive the brush roller 26 to perform a brushing action on the horizontal plate 11 and the scraper 12 once, so as to remove the solid waste placed on the horizontal plate 11 and the scraper 12 after being scooped and scraped, and prevent these solid wastes from being carried back into the sewage as the horizontal plate 11 and the scraper 12 descend, thereby improving the filtration effect of sewage to a certain extent.

[0087] The above settings enable the horizontal plate 11 and the brush roller 26 to move alternately, thereby improving the timing logic of their movements. The alternating movement of the two can effectively remove solid waste from the horizontal plate 11 and the scraper 12 under the action of the brush roller 26, preventing these solid wastes from being carried back into the sewage as the horizontal plate 11 and the scraper 12 descend, thus improving the filtration effect of sewage to a certain extent.

[0088] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0089] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A wastewater treatment system, characterized in that, The system includes a sewage collection device, a primary sewage treatment device, a biochemical sewage treatment device, a sludge treatment device, and a sewage discharge device. The sewage collection device, primary sewage treatment device, biochemical sewage treatment device, sludge treatment device, and sewage discharge device communicate with an automatic control system. The primary sewage treatment device includes: a filter housing (1), in which a partition (2) is detachably installed, and the partition (2) has multiple filter holes (201); a horizontal plate (11), slidably installed within the filter housing (1), and the horizontal plate (11) has a through groove (1101); and a connecting plate assembly, disposed on the horizontal plate (11), the connecting plate assembly being able to... When the horizontal plate (11) moves downward, it remains separated from the partition (2) and the through groove (1101) is open. When the horizontal plate (11) moves upward, the connecting plate assembly can slide and adhere to the partition (2) to close the through groove (1101). The connecting plate assembly includes a sealing plate (13) arranged parallel to the horizontal plate (11), and a pad (1301) adapted to the through groove (1101) is provided on the sealing plate (13). The connecting plate assembly also includes a scraper (12) slidably disposed at one end of the horizontal plate (11) facing the partition (2), and a pull rod (14) is rotatably mounted on the scraper (12). The end of the pull rod (14) away from the scraper (12) is connected to the partition (2). The sealing plate (13) is rotatably connected; a sliding connection part (1302) is provided on the sealing plate (13), and the sliding connection part (1302) is slidably connected to the guide part (1102) provided on the horizontal plate (11); the sealing plate (13) and the horizontal plate (11) are connected by an elastic locking assembly; the elastic locking assembly includes two locking parts (15) symmetrically arranged on the sealing plate (13), and a crossbar (16) is connected between the two locking parts (15), and the crossbar (16) is rotatably connected to the pulling rod (14); the locking part (15) is provided with two grooves (1501) along its length direction, and the grooves (1501) are connected to the guide part (1102) provided on the horizontal plate (11). The elastic telescopic structure is adapted to the horizontal plate (11); the elastic telescopic structure includes a fixed sleeve (18) fixedly installed on the horizontal plate (11), a telescopic rod (19) is slidably installed in the fixed sleeve (18), and a pulley (17) adapted to the groove (1501) is rotatably installed on one end of the telescopic rod (19) facing the locking member (15); a spring (20) is also sleeved on the telescopic rod (19), one end of the spring (20) is connected to the inner wall of the fixed sleeve (18), and the other end is connected to the limiting ring formed on the telescopic rod (19); a brush roller (26) is able to remove solid waste placed on the horizontal plate (11) when the horizontal plate (11) rises to the end of its stroke.A power assembly is mounted on the filter housing (1). The power assembly includes a drive structure, a first transmission structure, and a second transmission structure. The first transmission structure is connected to the horizontal plate (11), and the second transmission structure is connected to the brush roller (26). The drive structure can alternately drive the first transmission structure and the second transmission structure to operate.

2. The wastewater treatment system according to claim 1, characterized in that, The drive structure includes a drive device (3) fixedly mounted on the filter housing (1), the output shaft of the drive device (3) being connected to a Maltese cross mechanism kit mounted on the filter housing (1); the Maltese cross mechanism kit includes a drive wheel (4) rotatably mounted on the filter housing (1) and connected to the output shaft of the drive device (3), the drive wheel (4) being adapted to a first driven wheel (5) and a second driven wheel (21) rotatably mounted on the filter housing (1); the first driven wheel (5) is connected to the first transmission structure via a first belt (6), and the second driven wheel (21) is connected to the second transmission structure via a bevel gear set (22) and a second belt (23).

3. A wastewater treatment system according to claim 2, characterized in that, The first transmission structure includes two transmission wheels (7) rotatably mounted on the filter box (1), a transmission belt (8) is sleeved between the two transmission wheels (7), a convex shaft (9) is fixed on the transmission belt (8), and the shaft of one of the transmission wheels (7) is connected to the first belt (6); a connecting frame (10) is fixed on the horizontal plate (11), and a first fitting groove (1001) is provided on the connecting frame (10), and the convex shaft (9) slides in cooperation with the first fitting groove (1001).

4. A wastewater treatment system according to claim 1, characterized in that, The brush roller (26) is connected to the second transmission structure via a transverse component; the transverse component includes a bracket (25) mounted on the filter housing (1), and a follower frame (24) mounted on the bracket (25) and rotatably connected to the brush roller (26). The follower frame (24) has sliders (2402) on both sides, and the sliders (2402) are slidably engaged with the side grooves (2501) mounted on the bracket (25); the follower frame (24) is also provided with a second fitting groove (2401) along its length, and the second fitting groove (2401) is slidably engaged with the second transmission structure; the transverse component also includes a gear structure for driving the brush roller (26) to rotate.

5. A wastewater treatment system according to claim 4, characterized in that, The meshing structure includes a gear (27) that is coaxially fixedly connected to the brush roller (26), and the gear (27) meshes with a rack plate (28) connected to the filter box (1).

6. A wastewater treatment process, used in the wastewater treatment system as described in any one of claims 1-5, characterized in that, Includes the following steps: Step 1: Urban domestic sewage and industrial wastewater are collected by sewage collection devices, which include sewage pipe networks, pumping stations, and storage and equalization tanks. Step 2: The collected sewage undergoes primary treatment using a primary sewage treatment device to remove large particulate matter and suspended solids. Step 3: The primary-treated sewage undergoes biological treatment using a biological sewage treatment device to remove organic matter, nitrogen, and phosphorus. Step 4: The biologically treated sewage undergoes sludge removal treatment using a sludge treatment device to separate sludge and water from the sewage through centrifugation. After drying, the sludge is then dried to meet discharge standards. Step 5: The treated sewage is discharged through a sewage discharge device.

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