Fabricated unit combined sewage treatment system

Abstract

The invention relates to an assembly type unit combination sewage treatment system, and belongs to the technical field of sewage treatment, the assembly type unit combination sewage treatment system comprises a prefabricated pool body, the pool body is a rectangular pool body with a top opening, the outer wall of the pool body is provided with a connecting piece, and the connecting piece is used for connecting adjacent pool bodies when the pool body is assembled; a mounting frame is slidably arranged in the tank body, an outer frame of the mounting frame abuts against the inner wall of the tank body, a plurality of discharging plates are arranged in the mounting frame, the discharging plates are flatly laid in the mounting frame to seal the mounting frame, the discharging plates are rotatably arranged in the mounting frame, and the rotating axes of the discharging plates are parallel to the bottom wall of the tank body. The first driving parts are used for driving the discharging plates to rotate, so that sludge can fall off between the adjacent discharging plates; the mounting frame is arranged in the pool body in a sliding manner, the mounting frame slides in the depth direction of the pool body, and the device further comprises a second driving part used for driving the mounting frame to slide. The method has the effect of shortening the building time of the sewage treatment system.

Description

Technical Field

[0001] This application relates to the technical field of sewage treatment, and particularly to an assembled unit combined sewage treatment system. Background Art

[0002] In current sewage treatment technologies, MBR systems are widely used due to their efficient biodegradation ability and membrane filtration effect. A sewage treatment system usually includes an adjustment tank, an MBR system, a sedimentation tank, and a sludge tank. The adjustment tank includes a mixer and a lift pump for adjusting water quality and quantity; the MBR system includes a backwash valve, a water production valve, a nitrification liquid reflux pump, and a membrane module. The backwash valve is used to backwash the membrane module regularly, and the nitrification liquid reflux pump returns nitrification liquid from the aerobic zone to the anoxic zone; the sedimentation tank includes a mixer and a reflux pump for further sedimentation and separation of sludge; the sludge tank is used for final sedimentation and discharging clear water.

[0003] However, although the functions of units in traditional decentralized multi-unit combined processes are clear, they have a large floor area, and a large amount of time is required for the construction of functional tanks during on-site construction. Summary of the Invention

[0004] To shorten the construction time of the sewage treatment system, this application provides an assembled unit combined sewage treatment system.

[0005] An assembled unit combined sewage treatment system provided by this application adopts the following technical solutions: An assembled unit combined sewage treatment system includes a prefabricated tank body. The tank body is a rectangular tank body with an open top. Connecting pieces are arranged on the outer wall of the tank body, and the connecting pieces are used to connect adjacent tank bodies during the assembly of the tank bodies; an installation frame is slidably arranged in the tank body, the outer frame of the installation frame abuts against the inner wall of the tank body, a plurality of discharge plates are arranged in the installation frame, the discharge plates are laid flat in the installation frame to enclose the installation frame, the discharge plates are rotatably arranged in the installation frame, the rotation axis of the discharge plate is parallel to the bottom wall of the tank body, and a first driving member is further included for driving the discharge plate to rotate so as to leave a space for sludge to fall between adjacent discharge plates; the installation frame is slidably arranged in the tank body, the installation frame slides along the depth direction of the tank body, and a second driving member is further included for driving the installation frame to slide.

[0006] Optionally, the first driving member includes a first motor arranged in the installation frame. There are two first motors and they are respectively located on the opposite side walls of the installation frame. The rotation shaft of the discharge plate is located in the installation frame, and the side wall of the installation frame is hollow. The first driving member further includes a driving belt arranged in the installation frame. The rotation shaft of the discharge plate is wound in the driving belt. A plurality of clamping rods are arranged on the inner side of the driving belt, and clamping grooves for the clamping rods to be clamped are opened on the rotation shaft of the discharge plate.

[0007] Optionally, a driving wheel is provided on the discharge plate rotating shaft, the clamping groove is opened on the driving wheel, the driving belt is wound around the driving wheel, and the driving belts on both sides are wound around the spaced driving wheels so that the rotating directions of adjacent discharge plates are opposite.

[0008] Optionally, a water pump is provided on the mounting frame, a return water pipe is provided on the side wall of the pool body, the return water pipe is a bellows pipe, the water inlet end of the return water pipe is located in the upper middle part of the pool body so that the upper clear liquid enters the water inlet end, the return water pipe is arranged at the water inlet end of the water pump, and the water outlet end of the water pump enters the mounting frame; both the discharge plate and the discharge plate rotating shaft are hollow, the rotating shaft of the discharge plate is communicated with the mounting frame, and a plurality of water outlet holes are opened on the discharge plate to drive the sludge deposited on the discharge plate to float above the discharge plate.

[0009] Optionally, a mounting plate is rotatably provided on the side wall of the pool body, the rotation axis of the mounting plate is parallel to the bottom wall of the pool body, a sludge pump is provided on the mounting plate, the sludge pump is located on the plate surface of the mounting plate facing the side wall of the pool body, and when the mounting plate covers the side wall of the pool body, the back surface of the mounting plate is flush with the side wall of the pool body.

[0010] Optionally, the second driving member includes a winch provided on the top of the pool body and a steel wire rope wound on the winch, and the free end of the steel wire rope is fixedly provided on the top of the mounting frame.

[0011] Optionally, a central shaft is provided in the middle of the bottom of the pool body, a stirring plate is provided on the central shaft, the central shaft is perpendicular to the bottom of the pool body and is rotatably provided on the bottom wall of the pool body, a waterproof motor for driving the central shaft to rotate is provided at the bottom of the pool body, the central shaft passes through the adjacent discharge plates to the upper part of the pool body, and a notch for the central shaft to pass through is opened on the discharge plate corresponding to the central shaft.

[0012] Optionally, the stirring plate is provided with a hollow interior and a feeding notch is opened on the side, the interior of the stirring plate is communicated with the central shaft, the central shaft is provided with a hollow interior, a spiral conveyor shaft is rotatably provided in the central shaft, a second motor is provided at the top of the central shaft, and the spiral conveyor shaft is provided on the output shaft of the second motor; a plurality of discharge holes are opened on the central shaft, and the sludge in the central shaft is discharged through the discharge ports.

[0013] Optionally, a plurality of moving plates are provided in the stirring plate, the moving plates are uniformly arranged along the length direction of the stirring plate, a sludge groove is formed between adjacent moving plates, the moving plates are movably arranged in the moving plate, and a third driving member for driving the moving plates to drive the sludge into the central shaft is provided on the stirring plate.

[0014] Optionally, the third driving member includes a third motor, a conveyor belt, and a conveyor wheel. An installation notch is formed at the top of the stirring plate. The conveyor wheel is rotatably arranged in the installation notch. The conveyor belt is wound around the conveyor wheel. The second motor is used to drive the conveyor wheel to rotate. The moving plate is fixedly arranged on the conveyor belt and runs onto the stirring plate through the installation notch.

[0015] In summary, the present application includes at least one of the following beneficial technical effects: 1. When building the sewage treatment system, first level and harden the ground, and then hoist the pool body. According to the design drawings of the sewage treatment system, such as arranging in a long strip, rectangle, or divergence, hoist the pool body to the designed position, and then connect the adjacent pool bodies through connectors to complete the construction of the pool bodies of the sewage treatment system. Subsequently, install the sewage treatment related components in the pool body, thereby reducing the construction time of the sewage treatment system; 2. When used as a sludge pool, a regulating pool, a bacteria reaction pool, and a sludge circulation pool, it is necessary to make the sludge and water in the pool body uniform so that the sludge in the sewage per unit volume is relatively uniform. At this time, the second driving member is used to drive the installation frame to slide. When the installation frame slides, the first driving member is used to drive the feeding plate to rotate. When the feeding plate rotates, a gap is left between adjacent feeding plates, so that the sludge on the feeding plate falls from the gap, and the sludge deposited at the bottom of the pool body is more evenly distributed in the pool body, thereby improving the sewage treatment effect; at the same time, by adjusting the size of the gap between adjacent feeding plates, the falling speed of the sludge is adjusted, and further the sludge is more evenly distributed in the pool body. Description of the Drawings

[0016] Figure 1 is the assembly schematic diagram of an assembled unit combined sewage treatment system according to an embodiment of the present application; Figure 2 is the structural schematic diagram of the pool body in an assembled unit combined sewage treatment system according to an embodiment of the present application; Figure 3 is the cross-sectional view of the installation frame in an assembled unit combined sewage treatment system according to an embodiment of the present application; Figure 4 is Figure 3 the enlarged schematic diagram of part A in Figure 5 is the structural schematic diagram of the central shaft in an assembled unit combined sewage treatment system according to an embodiment of the present application; Figure 6 is the cross-sectional view of the central shaft in an assembled unit combined sewage treatment system according to an embodiment of the present application.

[0017] Description of the reference numerals: 1. Pool body; 2. Installation frame; 3. Feeding plate; 4. First driving member; 41. First motor; 42. Driving belt; 43. Driving wheel; 5. Second driving member; 51. Winch; 52. Steel wire rope; 6. Clamping rod; 7. Clamping groove; 8. Water pump; 9. Return water pipe; 10. Water outlet hole; 11. Central shaft; 12. Stirring plate; 13. Feeding notch; 14. Screw conveyor shaft; 15. Second motor; 16. Discharge hole; 17. Moving plate; 18. Third motor; 19. Conveyor belt; 20. Conveyor wheel; 21. Mounting plate; 22. Sludge pump; 23. Sludge pipe. Detailed implementation manners

[0018] The following further elaborates on this application Figures 1-6 in conjunction with the appended drawings.

[0019] An embodiment of this application discloses an assembled unit combined sewage treatment system. Referring to Figure 1 , the assembled unit combined sewage treatment system includes a prefabricated tank body 1. The tank body 1 is a rectangular tank body 1 with an open top. Connecting members are provided on the outer wall of the tank body 1. The connecting members are used to connect adjacent tank bodies 1 during the assembly of the tank body 1. The connecting members include a connecting plate provided on the side wall of the tank body 1 and a connecting groove opened on the side wall of the tank body 1. Further, the connecting plate and the connecting groove are located on the mutually facing side walls, and the connecting plate is provided on two adjacent side walls of the tank body 1. Further, the connecting plate is in the shape of a dovetail block or a T shape, which is convenient for the stable connection of adjacent tank bodies 1.

[0020] Referring to Figure 2 and Figure 3 , to facilitate the relatively uniform mixing of the sewage entering the tank body 1 and the reaction sludge being uniformly mixed in the sewage, an installation frame 2 is slidably arranged in the tank body 1. The outer frame of the installation frame 2 abuts against the inner wall of the tank body 1. A plurality of discharge plates 3 are arranged in the installation frame 2. The discharge plates 3 are laid flat in the installation frame 2 to enclose the installation frame 2. The discharge plates 3 are rotatably arranged in the installation frame 2. The rotation axis of the discharge plates 3 is parallel to the bottom wall of the tank body 1. A first driving member 4 is further included for driving the discharge plates 3 to rotate so that a gap is left between adjacent discharge plates 3 for the sludge to fall; the installation frame 2 is slidably arranged in the tank body 1. The installation frame 2 slides along the depth direction of the tank body 1. A second driving member 5 is further included for driving the installation frame 2 to slide.

[0021] By driving the installation frame 2 to slide through the second driving member 5, when the installation frame 2 slides, the discharge plates 3 are driven to rotate through the first driving member 4. When the discharge plates 3 rotate, a gap is left between adjacent discharge plates 3, so that the sludge on the discharge plates 3 falls from the gap, and the sludge deposited at the bottom of the tank body 1 is relatively evenly distributed in the tank body 1, thereby improving the sewage treatment effect; at the same time, by adjusting the size of the gap between adjacent discharge plates 3, the falling speed of the sludge is adjusted, and further the sludge is evenly distributed in the tank body 1.

[0022] Referring to Figure 2 , in the embodiment of the present application, the second driving member 5 includes a winch 51 disposed on the top of the pool body 1 and a steel wire rope 52 wound on the winch 51. The free end of the steel wire rope 52 is fixedly disposed on the top of the mounting frame 2.

[0023] Referring to Figure 3 and Figure 4 , in the embodiment of the present application, the first driving member 4 includes a first motor 41 disposed in the mounting frame 2. The length direction of the output shaft of the first motor 41 is parallel to the length direction of the feeding plate 3. There are two first motors 41 and they are respectively located on the opposite side walls of the mounting frame 2. The rotating shaft of the feeding plate 3 is located in the mounting frame 2, and the side wall of the mounting frame 2 is hollowly disposed. The first driving member 4 further includes a driving belt 42 disposed in the mounting frame 2. The rotating shaft of the feeding plate 3 is wound in the driving belt 42, and the first motor 41 drives the rotating shaft of any one of the feeding plates 3 to rotate.

[0024] After the sludge carrying bacteria deposits in the pool body 1, first start the winch 51. The winch 51 winds up the steel wire rope 52, and the winding of the steel wire rope 52 drives the mounting frame 2 to move in the pool body 1; meanwhile, start the first motor 41. The first motor 41 drives the feeding plate 3 to rotate, and the rotation of the feeding plate 3 drives the driving belt 42 to run. The driving belt 42 drives the rotation of the remaining feeding plates 3, and opens the gap between the adjacent feeding plates 3, so as to facilitate the sinking of the sludge and make the sludge evenly distributed in the pool body 1.

[0025] Referring to Figure 3 and Figure 4 , to facilitate the driving belt 42 to drive the feeding plate 3 to rotate, a plurality of clamping rods 6 are disposed on the inner side of the driving belt 42, and a clamping groove 7 for the clamping rod 6 to be clamped is formed on the rotating shaft of the feeding plate 3; when the driving belt 42 drives the feeding plate 3 to rotate, the clamping rod 6 is clamped in the clamping groove 7, so as to facilitate the rotation of the rotating shaft driven by the driving belt 42; further, under the action of the clamping rod 6 and the clamping groove 7, it is convenient to fix the feeding plate 3 in a horizontal state or an inclined state, so as to facilitate the deposition of the sludge and the quantitative falling of the sludge.

[0026] Referring to Figure 3 and Figure 4 , further, a driving wheel 43 is disposed on the rotating shaft of the feeding plate 3, the clamping groove 7 is formed on the driving wheel 43, the driving belt 42 is wound around the driving wheel 43, and the driving belts 42 on both sides are wound around the driving wheels 43 at intervals, so that the rotating directions of the adjacent feeding plates 3 are opposite; the rotating directions of the adjacent feeding plates 3 are opposite, which is convenient for the adjacent feeding plates 3 to form an inverted V-shaped funnel after rotation, so as to facilitate the falling of the sludge.

[0027] Referring to Figure 2 , Figure 3 and Figure 4, to facilitate the initial rotation of the discharge plate 3 after the sludge is deposited and pressed on the discharge plate 3, in the embodiment of the present application, a water pump 8 is provided on the installation frame 2, and a return water pipe 9 is provided on the side wall of the pool body 1. The return water pipe 9 is a bellows pipe. The water inlet end of the return water pipe 9 is located in the upper middle part of the pool body 1 so that the upper clear liquid enters the water inlet end. The return water pipe 9 is arranged at the water inlet end of the water pump 8, and the water outlet end of the water pump 8 enters the installation frame 2; both the discharge plate 3 and the rotating shaft of the discharge plate 3 are hollow. The rotating shaft of the discharge plate 3 is communicated with the installation frame 2. A plurality of water outlet holes 10 are opened on the discharge plate 3 to drive the sludge deposited on the discharge plate 3 to float above the discharge plate 3; when the discharge plate 3 needs to rotate, the water pump 8 is started. The water pump 8 pumps the upper clear liquid in the pool body 1 into the return water pipe 9. The clear liquid enters the installation frame 2 and enters the discharge plate 3 through the rotating shaft, and then is ejected from the water outlet holes 10 to act on the sludge, so that the sludge floats above the discharge plate 3, thereby facilitating the rotation of the discharge plate 3 for sludge discharging.

[0028] Refer to Figure 2 , Figure 5 and Figure 6 , when the sludge is discharged through the discharge plate 3 and the installation frame 2 rises initially, at this time, the concentration of the sludge is relatively high, resulting in the falling sludge being deposited at the bottom of the pool body 1. Therefore, in the embodiment of the present application, a central shaft 11 is provided in the middle of the bottom of the pool body 1, and a stirring plate 12 is provided on the central shaft 11. The central shaft 11 is perpendicular to the bottom of the pool body 1 and is rotatably arranged on the bottom wall of the pool body 1. A waterproof motor for driving the central shaft 11 to rotate is provided at the bottom of the pool body 1. The central shaft 11 passes through the adjacent discharge plate 3 to the upper part of the pool body 1. A notch for the central shaft 11 to pass through is opened on the discharge plate 3 corresponding to the central shaft 11. When the installation frame 2 moves upward, first, the waterproof motor is started. The waterproof motor drives the central shaft 11 to rotate. The rotation of the central shaft 11 drives the stirring plate 12 to rotate. The rotation of the stirring plate 12 scrapes the deposited sludge, so that the deposited sludge floats in the water again, facilitating the attachment of bacteria to the sludge for sewage treatment.

[0029] Refer to Figure 5 and Figure 6, Further, the stirring plate 12 is hollow and has a feeding gap 13 on its side. The feeding gap 13 is opened on the side wall of the stirring plate 12 in the rotation direction. The inside of the stirring plate 12 is communicated with the central shaft 11. The central shaft 11 is hollow. A spiral conveyor shaft 14 is rotatably arranged inside the central shaft 11. A second motor 15 is arranged at the top of the central shaft 11. The spiral conveyor shaft 14 is arranged on the output shaft of the second motor 15. The central shaft 11 is provided with a plurality of discharge holes 16. The sludge inside the central shaft 11 is discharged through the discharge port. When the waterproof motor drives the central shaft 11 to rotate, the central shaft 11 drives the stirring plate 12 to rotate. The rotation of the stirring plate 12 scrapes the sludge, causing the sludge to enter the stirring plate 12. Then, the second motor 15 is started. The second motor 15 drives the spiral conveyor shaft 14 to rotate. The spiral conveyor shaft 14 conveys the sludge and moves the sludge out through the discharge holes 16, further improving the distribution effect of the sludge and thus improving the sewage treatment effect.

[0030] Refer to Figure 5 and Figure 6 , when the sludge enters the stirring plate 12, in order to facilitate the movement of the sludge in the stirring plate 12 and enter the central shaft 11, a plurality of moving plates 17 are arranged in the stirring plate 12. The moving plates 17 are evenly arranged along the length direction of the stirring plate 12. A sludge trough is formed between adjacent moving plates 17. The moving plates 17 are movably arranged in the moving plates 17. A third driving member for driving the moving plates 17 to drive the sludge into the central shaft 11 is arranged on the stirring plate 12. Refer to Figure 5 and Figure 6 , the third driving member includes a third motor 18, a conveyor belt 19 and a conveyor wheel 20. An installation notch is opened at the top of the stirring plate 12. The conveyor wheel 20 is rotatably arranged in the installation notch. The conveyor belt 19 is wound around the conveyor wheel 20. The second motor 15 is used to drive the conveyor wheel 20 to rotate. The moving plates 17 are fixedly arranged on the conveyor belt 19 and run onto the stirring plate 12 through the installation notch.

[0031] After the sludge enters the stirring plate 12, the second motor 15 is started. The second motor 15 drives the conveyor wheel 20 to rotate. The rotation of the conveyor wheel 20 drives the conveyor belt 19 to run. The running of the conveyor belt 19 drives the moving plates 17 to move. The movement of the moving plates 17 pushes the sludge to move, causing the sludge to enter the central shaft 11, thus facilitating the transportation of the lower-layer sludge to the upper layer of the pool body 1 and further improving the sewage treatment effect.

[0032] Refer to Figure 2, after the sewage reacts, it is transported to the next tank body 1. To facilitate the transportation of sludge out, a mounting plate 21 is rotatably arranged on the side wall of the tank body 1. The rotation axis of the mounting plate 21 is parallel to the bottom wall of the tank body 1. A sludge pump 22 is arranged on the mounting plate 21. The sludge pump 22 is located on the plate surface of the mounting plate 21 facing the side wall of the tank body 1. When the mounting plate 21 covers the side wall of the tank body 1, the back surface of the mounting plate 21 is flush with the side wall of the tank body 1. When it is necessary to remove the sludge in the tank body 1, first rotate the mounting plate 21, and the mounting plate 21 drives the sludge pump 22 into the middle or lower part of the tank body 1, so as to facilitate the removal of the sludge from the tank body 1.

[0033] Refer to Figure 2 , further, the sludge pipe 23 is a flexible pipe and is fixed in the inner wall of the tank body 1 in the middle. The sludge pipe 23 is arranged on the sludge pump 22. At the same time, a rotating motor for the rotation of the mounting plate 21 is arranged on the side wall of the tank body 1.

[0034] The implementation principle of an assembled unit combined sewage treatment system in an embodiment of the present application is as follows: When building the sewage treatment system, first level and harden the ground, and then hoist the tank body 1. According to the design drawings of the sewage treatment system, such as arranging in a long strip, rectangle or divergence, hoist the tank body 1 to the designed position, and then connect the adjacent tank bodies 1 through connectors, thus completing the construction of the tank body 1 of the sewage treatment system. Subsequently, install the sewage treatment related components in the tank body 1, thereby reducing the construction time of the sewage treatment system.

[0035] When used as a sludge tank, a regulating tank, a bacterial reaction tank and a sludge circulation tank, it is necessary to make the sludge and water in the tank body 1 uniform, so that the sludge in the unit volume of sewage is relatively uniform. At this time, the second driving member 5 is used to drive the mounting frame 2 to slide. When the mounting frame 2 slides, the first driving member 4 is used to drive the feeding plate 3 to rotate. When the feeding plate 3 rotates, a gap is left between the adjacent feeding plates 3, so that the sludge on the feeding plate 3 falls from the gap, and the sludge deposited at the bottom of the tank body 1 is more evenly distributed in the tank body 1, thereby improving the sewage treatment effect; at the same time, by adjusting the size of the gap between the adjacent feeding plates 3, the falling speed of the sludge is adjusted, and further the sludge is more evenly distributed in the tank body 1.

[0036] The above are all the preferred embodiments of the present application. The protection scope of the present application is not limited by this. Therefore, all equivalent changes made according to the structure, shape and principle of the present application should be covered within the protection scope of the present application.

Claims

1. An assembled unit combined sewage treatment system, characterized in that: It includes a prefabricated pool body (1), the pool body (1) is a rectangular pool body with an open top, and a connecting piece is provided on the outer wall of the pool body (1), which is used to connect adjacent pool bodies (1) during the assembly of the pool body (1); an installation frame (2) is slidably arranged in the pool body (1), the outer frame of the installation frame (2) abuts against the inner wall of the pool body (1), and a plurality of feeding plates (3) are arranged in the installation frame (2), the feeding plates (3) are laid flat in the installation frame (2) to enclose the installation frame (2), the feeding plates (3) are rotatably arranged in the installation frame (2), the rotation axis of the feeding plate (3) is parallel to the bottom wall of the pool body (1), and it further includes a first driving member (4) for driving the feeding plate (3) to rotate so as to leave a space for sludge to fall between adjacent feeding plates (3); the installation frame (2) is slidably arranged in the pool body (1), the installation frame (2) slides along the depth direction of the pool body (1), and it further includes a second driving member (5) for driving the installation frame (2) to slide.

2. The prefabricated unit combined sewage treatment system according to claim 1, wherein: The first driving member (4) includes a first motor (41) arranged in the installation frame (2), there are two first motors (41) and they are respectively located on the opposite side walls of the installation frame (2), the rotation shaft of the feeding plate (3) is located in the installation frame (2), and the side wall of the installation frame (2) is hollowly arranged. The first driving member (4) further includes a driving belt (42) arranged in the installation frame (2), the rotation shaft of the feeding plate (3) is wound in the driving belt (42), and a plurality of clamping rods (6) are arranged on the inner side of the driving belt (42), and a clamping groove (7) for the clamping rod (6) to be clamped is opened on the rotation shaft of the feeding plate (3).

3. The prefabricated unit combined sewage treatment system according to claim 2, wherein: A driving wheel (43) is arranged on the rotation shaft of the feeding plate (3), the clamping groove (7) is opened on the driving wheel (43), the driving belt (42) is wound around the driving wheel (43), and the driving belts (42) on both sides are wound around the spaced driving wheels (43) so that the rotation directions of adjacent feeding plates (3) are opposite.

4. The prefabricated unit combined sewage treatment system according to claim 2, characterized in that: A water pump (8) is arranged on the installation frame (2), a return water pipe (9) is arranged on the side wall of the pool body (1), the return water pipe (9) is a bellows pipe, the water inlet end of the return water pipe (9) is located in the upper middle part of the pool body (1) so that the upper layer of clear liquid enters the water inlet end, the return water pipe (9) is arranged at the water inlet end of the water pump (8), and the water outlet end of the water pump (8) enters the installation frame (2); both the feeding plate (3) and the rotation shaft of the feeding plate (3) are hollow, the rotation shaft of the feeding plate (3) is communicated with the installation frame (2), and a plurality of water outlet holes (10) are opened on the feeding plate (3) to drive the sludge deposited on the feeding plate (3) to float above the feeding plate (3).

5. The prefabricated unit combined sewage treatment system according to claim 1, wherein: A mounting plate (21) is rotatably arranged on the side wall of the pool body (1), the rotation axis of the mounting plate (21) is parallel to the bottom wall of the pool body (1), a sludge pump (22) is arranged on the mounting plate (21), the sludge pump (22) is located on the plate surface of the mounting plate (21) facing the side wall of the pool body (1), and when the mounting plate (21) covers the side wall of the pool body (1), the back surface of the mounting plate (21) is flush with the side wall of the pool body (1).

6. The prefabricated unit combined sewage treatment system according to claim 1, wherein: The second driving member (5) includes a winch (51) arranged on the top of the pool body (1) and a steel wire rope (52) wound on the winch (51), and the free end of the steel wire rope (52) is fixedly arranged on the top of the mounting frame (2).

7. The prefabricated unit combined sewage treatment system according to claim 1, wherein: A central shaft (11) is arranged in the middle of the bottom of the pool body (1), a stirring plate (12) is arranged on the central shaft (11), the central shaft (11) is perpendicular to the bottom of the pool body (1) and is rotatably arranged on the bottom wall of the pool body (1), a waterproof motor for driving the central shaft (11) to rotate is arranged at the bottom of the pool body (1), the central shaft (11) passes through the adjacent discharge plates (3) to the upper part of the pool body (1), and a notch for the central shaft (11) to pass through is formed in the discharge plate (3) corresponding to the central shaft (11).

8. The prefabricated unit combined sewage treatment system according to claim 7, wherein: The stirring plate (12) is hollow and a feeding notch (13) is formed on the side, the inside of the stirring plate (12) is communicated with the central shaft (11), the central shaft (11) is hollow, a spiral conveyor shaft (14) is rotatably arranged in the central shaft (11), a second motor (15) is arranged at the top of the central shaft (11), and the spiral conveyor shaft (14) is arranged on the output shaft of the second motor (15); a plurality of discharge holes (16) are formed in the central shaft (11), and the sludge in the central shaft (11) is discharged through the discharge port.

9. The prefabricated unit combined sewage treatment system according to claim 8, characterized in that: A plurality of moving plates (17) are arranged in the stirring plate (12), the moving plates (17) are uniformly arranged along the length direction of the stirring plate (12), a sludge tank is formed between adjacent moving plates (17), the moving plates (17) are movably arranged in the moving plates (17), and a third driving member for driving the moving plates (17) to drive the sludge into the central shaft (11) is arranged on the stirring plate (12).

10. The prefabricated unit combined sewage treatment system according to claim 9, wherein: The third driving member includes a third motor (18), a conveyor belt (19) and a conveyor wheel (20), an installation notch is formed at the top of the stirring plate (12), the conveyor wheel (20) is rotatably arranged in the installation notch, the conveyor belt (19) is wound on the conveyor wheel (20), the second motor (15) is used for driving the conveyor wheel (20) to rotate, and the moving plate (17) is fixedly arranged on the conveyor belt (19) and runs to the stirring plate (12) through the installation notch.

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