A biochemical sewage treatment device and a treatment method thereof

Abstract

The present invention discloses a biochemical sewage treatment device and a treatment method thereof, which specifically relates to the technical field of sewage treatment, including a sewage tank body composed of a sludge return tank, a sedimentation tank, an anaerobic tank, two anoxic tanks, and an aerobic tank. Several horizontal pipe packing layers are installed inside the sedimentation tank, and each of the horizontal pipe packing layers includes a frame. The two ends of the bottom of the frame are respectively fixedly provided with a side horizontal pipe 1 and a side horizontal pipe 2 that is movably installed. The present invention slides the locking blocks at the top of the side horizontal pipe 2 and several horizontal inclined pipes through a through groove and slides into the end of the installation groove. The locking rod locks the locking block downward, realizing the installation of the side horizontal pipe 2 and several horizontal inclined pipes with the frame. The horizontal pipe packing layer is simple and reliable to install and easy to remove. The side horizontal pipe 2 and several horizontal inclined pipes of different thickness sizes are selected. At this time, the gap between the horizontal pipe packing layers changes to adapt to the natural sinking of suspended matter of different particle sizes.

Description

Technical Field

[0001] The present invention relates to the technical field of sewage treatment, and in particular to a biochemical sewage treatment device and a treatment method thereof. Background Art

[0002] Traditional sewage biological denitrification technology generally has shortcomings such as long process flow, large footprint, low oxygen utilization efficiency, and low degree of automation. With the increasingly serious eutrophication problem of water bodies and the continuous improvement of nitrogen pollutant emission standards, it has become an urgent task to research and develop new, efficient and energy-saving sewage biological denitrification technology.

[0003] After searching, the invention patent with publication number CN111635075A discloses a biochemical sewage treatment device, which realizes the partition of anaerobic zone and mixing zone in the vertical direction, and sets a mud-water separation device in the mixing zone to form a sedimentation zone in the mud-water separation device. The mud-water separation device and the inner surface of the shell form an aerobic zone, which provides a suitable growth environment for different biochemical bacteria species, and performs mud-water separation in the sedimentation zone, thereby creating good conditions for the removal of pollutants such as organic matter, nitrogen, and phosphorus. The layout of multiple partitions in the sewage treatment device, especially the layout of the longitudinal partitions, can significantly reduce the floor space of the sewage treatment facility.

[0004] The existing solution has the problem that the surface load of the secondary sedimentation tank is low. When settling the suspended matter in the sewage, an integral horizontal pipe is usually used for sedimentation. The gap between the horizontal pipes cannot be adjusted, and the particle size of the suspended matter in the settled sewage is limited. In addition, when discharging sludge from the sewage, the sludge discharge structure is directly welded to the transmission mechanism, and it is not easy to replace the sludge discharge mechanism when a failure occurs. Summary of the invention

[0005] The purpose of the present invention is to provide a biochemical sewage treatment device and a treatment method thereof, wherein the locking blocks on the tops of the second side horizontal pipe and several horizontal inclined pipes are slid into the through groove and into the end of the installation groove, and then the servo motor drives the output shaft to rotate, and the output shaft drives multiple cams to rotate. The multiple cams squeeze the corresponding pressure blocks while rotating, so that the multiple pressure blocks move downward synchronously, driving the locking rods downward to lock the locking blocks, thereby realizing the installation of the second side horizontal pipe and several horizontal inclined pipes with the frame. The horizontal pipe packing layer is simple and reliable to install and easy to remove. When installing the horizontal pipe packing layer, the second side horizontal pipe and several horizontal inclined pipes of different thicknesses can be selected. At this time, the gap between the horizontal pipe packing layers changes to adapt to the natural sinking of suspended matter of different particle sizes, thereby improving the utilization rate of the entire device to solve the problems mentioned in the above background technology.

[0006] The present invention can be implemented through the following technical scheme: a biochemical sewage treatment device, including a sewage tank body composed of a sludge return tank, a sedimentation tank, an anaerobic tank and two anoxic tanks and an aerobic tank, wherein a plurality of horizontal pipe filling layers are installed inside the sedimentation tank, each of the horizontal pipe filling layers includes a frame, a side horizontal pipe 1 is fixedly arranged at both ends of the bottom of the frame and a side horizontal pipe 2 is movably installed, a plurality of horizontal inclined pipes are installed between the side horizontal pipe 2 and the side horizontal pipe 1, a plurality of protruding blocks are installed on the top surface of the frame, and a horizontal inclined pipe end is provided on the bottom surface of the frame. Entering the through slot, the surface of the frame is provided with a mounting slot connected to the through slot, the two protruding blocks at the end are each installed with a supporting vertical plate, and the top surfaces of the remaining multiple protruding blocks are each movably installed with a pressure block, an output shaft driven by a servo motor is installed between the two supporting vertical plates, and a plurality of cams abutting against the corresponding pressure block surfaces are installed on the outer surface of the output shaft, and locking blocks sliding through the through slot and the inside of the mounting slot are installed on the side surfaces of a plurality of horizontal inclined tubes and the side horizontal tubes. The bottom surface of the pressure block is fixedly connected with a locking rod which movably cooperates with the protruding block and is used to lock and position the locking block.

[0007] A further technical improvement of the present invention is that a through hole for vertically inserting a locking rod is formed on the top surface of the locking block, and a spring is sleeved on the outer surface of the locking rod and located between the pressing block and the protruding block.

[0008] A further technical improvement of the present invention is that a mud slide for sludge to slide down is provided between two adjacent horizontal inclined tubes, and a plurality of mud discharge ports for sludge in sewage to fall down and communicate with the mud slide are provided on the surface of each horizontal inclined tube.

[0009] A further technical improvement of the present invention is that a scraping mechanism for reciprocatingly scraping sludge is provided at the bottom of the inner cavity of the sedimentation tank, and the scraping mechanism moves toward the sludge return tank, and the sludge outlet end of the sludge return tank is connected to a sludge pump outside the sewage tank body.

[0010] A further technical improvement of the present invention is that the scraper mechanism includes a plurality of gears rotatably mounted on the inner wall of the sedimentation tank, the outer surface of each of the gears is meshed with the same chain, a plurality of locking seats are fixedly connected to the surface of the chain, a stud is installed inside each of the locking seats, a nut is sleeved on the outer surface of the stud, and a shaft rod is movably connected to the other end of the stud, and a scraper seat is fitted on the surface of the shaft rod.

[0011] A further technical improvement of the present invention is that a scraper cone for pushing the sludge is provided at one end of the scraper seat, and a fitting seat is provided at the end of the scraper seat, and communicating positioning holes are provided on the surfaces of the fitting seat and the shaft.

[0012] A further technical improvement of the present invention is that a submersible agitator is installed inside the anaerobic tank and the two anoxic tanks, an air booster is installed at the connection point of the two aerobic tanks, and an aeration pipeline is provided at the inner end of the two aerobic tanks.

[0013] The present invention also provides a treatment method of a biochemical sewage treatment device, which specifically comprises the following steps:

[0014] Step 1: The sewage in the sludge return tank reaches the water distribution pipe through the anaerobic tank, the anoxic tank and the aerobic tank, and then reaches the sedimentation tank through the water distribution pipe. The suspended matter in the sewage is naturally settled through the horizontal pipe filler layer in the sedimentation tank;

[0015] Step 2: The horizontal inclined tube and the second side horizontal tube in the horizontal tube packing layer are disassembled and connected with the frame, and the locking block enters through the through slot and slides into the end of the installation slot. The output shaft drives the cam to squeeze the pressing block downward, and simultaneously drives the locking rod downward, so that the end of the locking rod is inserted into the inside of the through hole, thereby fixing the horizontal inclined tube and the second side horizontal tube to the frame;

[0016] Step 3. Insert the studs at both ends of the shaft into the corresponding locking seats, and use a nut threaded sleeve to fit the outer surface of the studs; the scraper seat fits the surface of the shaft to ensure that the grooves of the two positioning holes are connected, and the scraper seat is used to scrape the sludge on the bottom surface of the sedimentation tank cavity and move it toward the sludge return tank.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. Slide the locking blocks on the tops of the side horizontal pipe 2 and several horizontal inclined pipes from the through groove and slide them into the end of the installation groove. Then the servo motor drives the output shaft to rotate, and the output shaft drives multiple cams to rotate. The multiple cams squeeze the corresponding pressing blocks while rotating, so that the multiple pressing blocks move downward synchronously, driving the locking rod downward to lock the locking blocks, thus realizing the installation of the side horizontal pipe 2 and several horizontal inclined pipes with the frame. The horizontal pipe packing layer is simple and reliable to install and easy to dismantle. When installing the horizontal pipe packing layer, the side horizontal pipe 2 and several horizontal inclined pipes of different thicknesses can be selected. At this time, the gap between the horizontal pipe packing layers changes to adapt to the natural sinking of suspended matter of different particle sizes, thereby improving the utilization rate of the entire device.

[0019] 2. Press the stud so that it is hidden at the two ends of the shaft, then place the shaft between the two chains, align the stud with the locking seat, and store the stud inside the locking seat. Then use a nut to thread the stud to achieve the installation of the shaft and the two chains. The shaft is driven to move synchronously through the transmission of the chain, and the shaft drives the scraper seat to scrape the sludge on the bottom of the inner cavity of the sedimentation tank through the scraper cone. The sludge fits along the scraper cone and the scraper seat to push the sludge into the sludge return tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to facilitate understanding by those skilled in the art, the present invention is further described below with reference to the accompanying drawings.

[0021] Figure 1 A top view of the present invention;

[0022] Figure 2 is a side sectional view of the present invention;

[0023] Figure 3 It is a schematic diagram of the three-dimensional structure of the frame and the horizontal tube of the present invention;

[0024] Figure 4 For the present invention Figure 3 A partial enlarged view of the middle A;

[0025] Figure 5 It is a schematic diagram of the structural connection between the cam and the pressing block of the present invention;

[0026] Figure 6 It is a schematic diagram of the structural connection of the mud scraping mechanism of the present invention;

[0027] Figure 7 It is a schematic diagram of the three-dimensional structure of the shaft rod and the mud scraper seat of the present invention.

[0028] In the figure: 1. sludge return tank; 2. anoxic tank; 3. sedimentation tank; 4. horizontal pipe packing layer; 5. mud scraper mechanism; 6. submersible agitator; 7. aerobic tank; 8. air lifter; 9. aeration pipeline; 10. anaerobic tank; 11. frame; 12. side horizontal pipe one; 13. side horizontal pipe two; 14. horizontal inclined pipe; 15. mud outlet; 17. mud slide; 18. support vertical plate; 19. output shaft; 20. cam; 21. protruding block; 22. mounting groove; 23. through groove; 24. locking block; 25. through hole; 26. pressure block; 27. locking rod; 28. spring; 29. ​​gear; 30. chain; 31. locking seat; 32. stud; 33. nut; 34. shaft; 35. mud scraper seat; 36. fitting seat; 37. mud scraper cone. DETAILED DESCRIPTION

[0029] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation method, structure, characteristics and effects of the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0030] See also Figure 1-Figure 7As shown, the present invention provides a biochemical sewage treatment device, including a sewage tank body consisting of a sludge return tank 1, a sedimentation tank 3, an anaerobic tank 10, two anoxic tanks 2, and an aerobic tank 7. A plurality of horizontal pipe packing layers 4 are installed inside the sedimentation tank 3. Each horizontal pipe packing layer 4 includes a frame 11. The bottom ends of the frame 11 are respectively fixedly provided with a side horizontal pipe 12 and a side horizontal pipe 2 13 are movably installed. A plurality of horizontal inclined pipes 14 are installed between the side horizontal pipe 2 13 and the side horizontal pipe 1 12. The top surface of the frame 11 is provided with a plurality of protruding blocks 2 1, and a through slot 23 for the end of the horizontal inclined tube 14 to enter is provided on the bottom surface of the frame 11, and a mounting slot 22 communicating with the through slot 23 is provided on the surface of the frame 11, and a support vertical plate 18 is installed on each of the two protruding blocks 21 at the end, and a pressing block 26 is movably installed on the top surface of the remaining plurality of protruding blocks 21, and an output shaft 19 driven by a servo motor is installed between the two supporting vertical plates 18, and a plurality of cams 20 are installed on the outer surface of the output shaft 19 to abut against the surface of the corresponding pressing block 26, and the side surfaces of the plurality of horizontal inclined tubes 14 and the side horizontal tube 13 The locking blocks 24 are installed on the top of the horizontal tube packing layer 4, which slide through the through groove 23 and the inside of the installation groove 22. The bottom surface of the pressing block 26 is fixed with a locking rod 27 that flexibly cooperates with the protruding block 21 and is used to lock and position the locking block 24. The side horizontal tube 12 in the horizontal tube packing layer 4 is fixed to the frame 11, and then the side horizontal tube 13 and the locking blocks 24 on the top of the horizontal inclined tubes 14 are slid into the through groove 23 and into the end of the installation groove 22. Then the servo motor drives the output shaft 19 to rotate, and the output shaft 19 drives the multiple cams 20 to rotate, and the multiple cams 2 0 rotates while squeezing the corresponding pressing blocks 26, so that multiple pressing blocks 26 move downward synchronously, driving the locking rod 27 to lock the locking block 24 downward, thereby realizing the installation of the side horizontal pipe 2 13 and several horizontal inclined pipes 14 with the frame 11. The horizontal pipe filling layer 4 is simple and reliable to install and easy to remove. When installing the horizontal pipe filling layer 4, the side horizontal pipe 2 13 and several horizontal inclined pipes 14 with different thicknesses can be selected. At this time, the gap of the horizontal pipe filling layer 4 changes to adapt to the natural sinking of suspended matter with different particle sizes, thereby improving the utilization rate of the entire device.

[0031] A through hole 25 for vertically inserting a locking rod 27 is provided on the top surface of the locking block 24, and a spring 28 is sleeved on the outer surface of the locking rod 27 and located between the pressing block 26 and the protruding block 21. When the opposite side horizontal tube 13 and several horizontal inclined tubes 14 are installed and positioned, the locking rod 27 is driven downward under the extrusion of the cam 20 and the pressing block 26, so that the spring 28 contracts and produces elastic deformation, and the end of the locking rod 27 is vertically inserted into the through hole 25, thereby quickly installing the opposite side horizontal tube 13 and several horizontal inclined tubes 14 between the frame 11.

[0032] A mud slide 17 for sludge to slide down is provided between two adjacent horizontal inclined tubes 14. A plurality of mud discharge ports 15 for sludge in sewage to fall and connected to the mud slide 17 are provided on the surface of each horizontal inclined tube 14. Sewage enters through the plurality of horizontal inclined tubes 14, falls into the mud slide 17 through the mud discharge ports 15, and falls onto the inner cavity bottom surface of the sedimentation tank 3 along the mud slide 17. The suspended matter in the sewage settles naturally, realizing that water goes through the waterway and mud goes through the mudway.

[0033] A scraping mechanism 5 for reciprocatingly scraping sludge is provided at the bottom of the inner cavity of the sedimentation tank 3. The scraping mechanism 5 moves toward the direction of the sludge return tank 1. The sludge outlet end of the sludge return tank 1 is connected to the sludge pump outside the sewage tank body. The scraping mechanism 5 is used to scrape the sludge on the bottom of the inner cavity of the sedimentation tank 3, and the sludge is pumped out by the sludge pump.

[0034] The scraper mechanism 5 includes a plurality of gears 29 rotatably mounted on the inner wall of the sedimentation tank 3, the outer surface of each gear 29 is meshed with a chain 30, a plurality of locking seats 31 are fixedly connected to the surface of the chain 30, a stud 32 is installed inside each locking seat 31, a nut 33 is sleeved on the outer surface of the stud 32, and a shaft 34 is movably connected to the other end of the stud 32, and a scraper seat 35 is fitted on the surface of the shaft 34; a scraper cone 37 for pushing the sludge is provided at one end of the scraper seat 35, and a fitting seat 36 is provided at the end of the scraper seat 35, and the fitting seat 36 and the surface of the shaft 34 are provided with communicating positioning holes When using the scraper mechanism 5, first press the stud 32 so that the stud 32 is hidden at the two ends of the shaft 34, then the shaft 34 is placed between the two chains 30, the stud 32 is aligned with the locking seat 31, the stud 32 is stored inside the locking seat 31, and then the nut 33 is used to thread the stud 32, thereby realizing the installation of the shaft 34 and the two chains 30. The shaft 34 is driven to move synchronously through the transmission of the chain 30, and the shaft 34 drives the scraper seat 35 to scrape the sludge on the bottom surface of the inner cavity of the sedimentation tank 3 through the scraper cone 37. The sludge fits with the scraper seat 35 along the scraper cone 37, and the sludge is pushed into the sludge return tank 1.

[0035] Submersible agitators 6 are installed inside the anaerobic tank 10 and the two anoxic tanks 2 , air lifters 8 are installed at the connecting points of the two aerobic tanks 7 , and aeration pipelines 9 are provided at the inner ends of the two aerobic tanks 7 .

[0036] The present invention also provides a treatment method of a biochemical sewage treatment device, which specifically comprises the following steps:

[0037] Step 1: The sewage in the sludge return tank 1 reaches the position of the water distribution pipe through the anaerobic tank 10, the anoxic tank 2 and the aerobic tank 7, and then reaches the sedimentation tank 3 through the water distribution pipe. The suspended matter in the sewage is naturally settled through the horizontal pipe filler layer 4 in the sedimentation tank 3;

[0038] Step 2: The horizontal inclined tube 14 and the second side horizontal tube 13 in the horizontal tube packing layer 4 are disassembled and connected with the frame 11, and the locking block 24 enters through the through slot 23 and slides into the end of the mounting slot 22, and the output shaft 19 drives the cam 20 to press the pressing block 26 downward, and simultaneously drives the locking rod 27 downward, so that the end of the locking rod 27 is inserted into the inside of the through hole 25, so as to achieve the fixation of the horizontal inclined tube 14 and the second side horizontal tube 13 with the frame 11;

[0039] Step three, the studs 32 at both ends of the shaft 34 are inserted into the corresponding locking seats 31, and the nuts 33 are threadedly sleeved on the outer surface of the studs 32; the scraper seat 35 fits with the surface of the shaft 34 to ensure that the grooves of the two positioning holes are connected, and the scraper seat 35 is used to scrape the sludge on the bottom surface of the inner cavity of the sedimentation tank 3 and move toward the sludge return tank 1.

[0040] When the present invention is in use, the locking blocks 24 on the tops of the side horizontal tube 13 and the plurality of horizontal inclined tubes 14 are slid into the through grooves 23 and into the ends of the installation grooves 22, and then the servo motor drives the output shaft 19 to rotate, and the output shaft 19 drives the plurality of cams 20 to rotate, and the plurality of cams 20 rotate while squeezing the corresponding pressing blocks 26, so that the plurality of pressing blocks 26 are synchronously moved downward, driving the locking rods 27 downward to lock the locking blocks 24, thereby realizing the installation of the side horizontal tube 13 and the plurality of horizontal inclined tubes 14 with the frame 11, and the horizontal tube packing layer 4 is simple and reliable to install and easy to remove. When installing the horizontal tube packing layer 4, the side horizontal tube 13 and the plurality of horizontal inclined tubes 14 of different thicknesses can be selected, and at this time, the gap of the horizontal tube packing layer 4 changes to adapt to the natural sinking of suspended matter of different particle sizes, thereby improving the utilization rate of the entire device;

[0041] The stud 32 is pressed so that the stud 32 is hidden at the two ends of the shaft 34. The shaft 34 is then placed between the two chains 30. The stud 32 is aligned with the locking seat 31. The stud 32 is received inside the locking seat 31. The nut 33 is then used to thread the stud 32, thereby realizing the installation of the shaft 34 and the two chains 30. The shaft 34 is driven to move synchronously through the transmission of the chain 30. The shaft 34 drives the scraper seat 35 to scrape the sludge on the bottom surface of the inner cavity of the sedimentation tank 3 through the scraper cone 37. The sludge fits the scraper seat 35 along the scraper cone 37 to push the sludge into the sludge return tank 1.

[0042] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A biochemical sewage treatment device, comprising a sewage tank body consisting of a sludge return tank (1), a sedimentation tank (3), an anaerobic tank (10), two anoxic tanks (2), and an aerobic tank (7), wherein a plurality of horizontal pipe packing layers (4) are installed inside the sedimentation tank (3), characterized in that: Each of the horizontal tube packing layers (4) comprises a frame (11), and the two ends of the bottom of the frame (11) are respectively fixedly provided with a side horizontal tube 1 (12) and a side horizontal tube 2 (13) movably installed, and a plurality of horizontal inclined tubes (14) are installed between the side horizontal tube 2 (13) and the side horizontal tube 1 (12). The top surface of the frame (11) is provided with a plurality of protruding blocks (21), and the bottom surface of the frame (11) is provided with a through groove (23) for the ends of the horizontal inclined tubes (14) to enter, and the surface of the frame (11) is provided with a mounting groove (22) communicating with the through groove (23), and the two protruding blocks (21) at the ends are both provided with supporting members. A vertical plate (18), a plurality of remaining protruding blocks (21) are movably mounted on the top surfaces thereof with pressure blocks (26), an output shaft (19) driven by a servo motor is mounted between the two supporting vertical plates (18), a plurality of cams (20) are mounted on the outer surface of the output shaft (19) and are in contact with the surfaces of the corresponding pressure blocks (26), a plurality of horizontal inclined tubes (14) and the side surfaces of the second horizontal tube (13) are mounted with locking blocks (24) that slide through the through grooves (23) and the inside of the mounting grooves (22), and a locking rod (27) that movably cooperates with the protruding blocks (21) and is used to lock and position the locking blocks (24) is fixedly mounted on the bottom surface of the pressure blocks (26); A sludge scraping mechanism (5) for reciprocatingly scraping sludge is provided at the bottom of the inner cavity of the sedimentation tank (3), and the sludge scraping mechanism (5) moves in the direction of the sludge return tank (1), and the sludge outlet end of the sludge return tank (1) is connected to a sludge pump outside the sewage tank body; The scraper mechanism (5) comprises a plurality of gears (29) rotatably mounted on the inner wall surface of the sedimentation tank (3), the outer surface of each of the gears (29) being meshed with a same chain (30), the surface of the chain (30) being fixedly connected with a plurality of locking seats (31), the interior of each of the locking seats (31) being equipped with a stud (32), the outer surface of the stud (32) being sleeved with a nut (33), and the other end of the stud (32) being movably connected with a shaft (34), and the surface of the shaft (34) being fitted with a scraper seat (35).

2. A biochemical sewage treatment device according to claim 1, characterized in that: A through hole (25) for vertically inserting a locking rod (27) is provided on the top surface of the locking block (24), and a spring (28) is sleeved on the outer surface of the locking rod (27) and located between the pressing block (26) and the protruding block (21).

3. The biochemical sewage treatment device according to claim 1, characterized in that: A mud slide (17) for mud to slide down is provided between two adjacent horizontal inclined tubes (14), and a plurality of mud discharge ports (15) for mud in sewage to fall down and communicating with the mud slide (17) are provided on the surface of each horizontal inclined tube (14).

4. The biochemical sewage treatment device according to claim 1, characterized in that: A scraper cone (37) for pushing against the sludge is provided at one end of the scraper seat (35), and a fitting seat (36) is provided at the end of the scraper seat (35). The fitting seat (36) and the shaft (34) are provided with communicating positioning holes on their surfaces.

5. The biochemical sewage treatment device according to claim 1, characterized in that: The anaerobic tank (10) and the two anoxic tanks (2) are both equipped with a submersible agitator (6), the connecting point of the two aerobic tanks (7) is equipped with an air booster (8), and the inner cavity ends of the two aerobic tanks (7) are both provided with an aeration pipeline (9).

6. A treatment method of the biochemical sewage treatment device according to any one of claims 1 to 5, characterized in that: The processing method specifically comprises the following steps: Step 1: The sewage in the sludge return tank (1) reaches the position of the water distribution pipe through the anaerobic tank (10), the anoxic tank (2) and the aerobic tank (7), and then reaches the sedimentation tank (3) through the water distribution pipe. The suspended matter in the sewage is naturally settled through the horizontal pipe filler layer (4) in the sedimentation tank (3); Step 2: The horizontal inclined tube (14) and the second side horizontal tube (13) in the horizontal tube packing layer (4) are disassembled and connected to the frame (11), the locking block (24) enters through the through groove (23) and slides into the end of the mounting groove (22), the output shaft (19) drives the cam (20) to press the pressing block (26) downward, and simultaneously drives the locking rod (27) downward, so that the end of the locking rod (27) is inserted into the inside of the through hole (25), thereby achieving the fixation of the horizontal inclined tube (14) and the second side horizontal tube (13) to the frame (11); Step 3: The studs (32) at both ends of the shaft (34) are inserted into the corresponding locking seats (31), and the nuts (33) are threadedly sleeved on the outer surfaces of the studs (32); the scraper seat (35) is fitted with the surface of the shaft (34) to ensure that the hole grooves of the two positioning holes are connected, and the scraper seat (35) is used to scrape the sludge on the bottom surface of the inner cavity of the sedimentation tank (3) and move in the direction of the sludge return tank (1).

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