An integrated sedimentation tank

Abstract

The present application relates to a kind of integrated sedimentation tank, the side wall of the sedimentation tank pool body of integrated sedimentation tank is provided with water hole, the inside of the sedimentation tank pool body is provided with inclined tube filling, the upper side of the inclined tube filling in the sedimentation tank pool body is provided with water outlet groove for guiding clear water from the sedimentation tank pool body, the lower side of the inclined tube filling is provided with the sludge hopper of big upper and small lower on the sedimentation tank pool body, the bottom of sludge hopper is sedimentation port, the bottom of the sedimentation tank pool body has the drop hopper with upper end and sedimentation port communication, lower end and good oxygen tank communication, the bottom of drop hopper is drop sedimentation port deviated to the side of the sedimentation port, the sidewall between drop hopper and the sidewall of sludge hopper forms the gas release port located in the upper side of drop sedimentation port.The present application solves the technical problem that the sedimentation tank is set to the outside of good oxygen tank in prior art, and the whole sewage treatment tank occupies larger space.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of sewage treatment, in particular to an integrated sedimentation tank. BACKGROUND

[0002] In sewage treatment, the traditional A-O (anaerobic-aerobic), A-A-O (anaerobic-anoxic-aerobic) process is the simplest process flow and the most widely used biochemical system denitrification and phosphorus removal process. The existing sewage treatment equipment using AAO process, such as the treatment tank disclosed in the "integrated sewage treatment tank for improving AAO and sewage treatment method" of Chinese patent CN104891656B, the treatment tank comprises an anaerobic phosphorus removal zone, a low-oxygen aeration zone, a strengthened aeration zone and a sedimentation zone which are sequentially adjacent and integrally arranged and separated by partition walls. Water flow channels are arranged on each partition wall. The anaerobic phosphorus removal zone is divided into a first anaerobic phosphorus removal zone and a second anaerobic phosphorus removal zone by a first partition wall, and water flow channels are arranged at both ends of the first partition wall. Push-flow stirring devices are arranged at the wastewater inlet end in the first anaerobic phosphorus removal zone and at the end of the second anaerobic phosphorus removal zone away from the wastewater inlet end. The low-oxygen aeration zone is divided into a first low-oxygen aeration zone and a second low-oxygen aeration zone by a second partition wall, and water flow channels are arranged at both ends of the second partition wall. An air push-flow zone is arranged at the inlet end of the first low-oxygen aeration zone. The sedimentation zone is communicated with the anaerobic phosphorus removal zone through a sludge return channel. An air push-flow device is arranged in the air push-flow zone. The air push-flow zone and the first low-oxygen aeration zone are separated by a partition wall.

[0003] The first low-oxygen aeration zone and the second low-oxygen aeration zone are anaerobic zones, and the strengthened aeration zone is an aerobic zone. In the anaerobic zone, microorganisms absorb and degrade COD, ammonia nitrogen, TN and TP, and carry out nitrification and denitrification reactions, thereby effectively removing part of the refractory organic matter and improving the removal efficiency of organic matter. In the aerobic zone, microorganisms can absorb phosphorus, thereby improving the removal efficiency of phosphorus. The mixed liquid treated in the aerobic zone enters the sedimentation zone for sludge-water separation. The separated sludge is partially returned to the anaerobic zone and the aerobic zone, and partially recovered and treated. The returned sludge is used to adjust the sludge concentration in the corresponding tank, which can effectively introduce ammonia nitrogen in the sludge back into the biological reaction to increase the removal efficiency of suspended solids and organic matter.

[0004] The existing sewage treatment device has the problem that the sedimentation zone is arranged outside the aerobic zone, so the sedimentation zone itself occupies a large land space. For many old sewage plants, the land is very limited, and the size of the newly built tank is greatly limited. SUMMARY

[0005] The present application aims to provide an integrated sedimentation tank to solve the technical problem of the prior art that the sedimentation tank is arranged outside the aerobic tank, resulting in a large land space of the entire sewage treatment tank.

[0006] To solve the above technical problems, the technical scheme of the integrated sedimentation tank in the present application is as follows:

[0007] The integrated sedimentation tank comprises a sedimentation tank body used for being placed in an aerobic tank during use, a water passing hole is arranged on the side wall of the sedimentation tank body, a water distribution channel with a bottom connected with the water passing hole is arranged on the outside of the water passing hole of the sedimentation tank body, the upper end of the water distribution channel is a water distribution channel water inlet communicated with the aerobic tank, an inclined pipe filler is arranged in the inside of the sedimentation tank body, a water outlet groove for guiding clean water out of the sedimentation tank body is arranged on the upper side of the inclined pipe filler in the sedimentation tank body, a sludge hopper with a large upper part and a small lower part is arranged on the lower side of the inclined pipe filler of the sedimentation tank body, the bottom of the sludge hopper is a sludge falling port, the bottom of the sedimentation tank body has a sludge falling hopper with an upper end communicated with the sludge falling port and a lower end communicated with the aerobic tank, the bottom of the sludge falling hopper is a sludge falling port deviated to one side of the sludge falling port, and the side wall of the sludge falling hopper and the side wall of the sludge hopper form a gas releasing port located directly above the sludge falling port.

[0008] Further, the length of the sedimentation tank body extends along the left-right direction, the width of the sedimentation tank body extends along the front-rear direction, the water distribution channel is located on the left side of the sedimentation tank body, the water passing hole is arranged on the left side wall of the sedimentation tank body, the length of the sludge falling port extends along the left-right direction, the length of the sludge falling port extends along the left-right direction, and the length of the water outlet groove extends along the left-right direction.

[0009] Further, the sludge falling port is located on the front side of the sludge falling port.

[0010] Further, the width of the sludge falling port is less than one half of the width of the sludge hopper.

[0011] Further, the front side wall of the sludge hopper is a movable wall with an upper end hingedly connected with the sedimentation tank body, the hinge axis of the movable wall extends along the left-right direction, a movable wall driving mechanism is arranged between the movable walls of the sludge hopper to drive the movable walls to swing around the hinge axes thereof, the rear side wall of the sludge hopper is a fixed wall with an upper end fixedly connected with the sedimentation tank body, the fixed wall is provided with a sludge discharging port extending along the left-right direction, a sludge discharging door capable of being opened and closed is arranged at the sludge discharging port, the sedimentation tank body further comprises a vertical side wall located on the rear side of the fixed wall, the left and right ends of the fixed wall and the vertical side wall are respectively provided with a left side wall and a right side wall, the fixed wall, the vertical side wall, the left side wall and the right side wall enclose a sludge discharging space, a sludge discharging auger with an axis extending along the left-right direction is arranged in the sludge discharging space, a sludge discharging groove is arranged on the right side of the sludge discharging auger, and the integrated sedimentation tank further comprises a sludge discharging pump connected with the sludge discharging groove through a sludge discharging pipeline.

[0012] Further, the sludge discharging auger comprises an auger shell and an auger shaft extending along the left-right direction in the auger shell, the auger shaft is provided with spiral conveying blades, the upper end of the auger shell is provided with a shell sludge inlet extending along the left-right direction and communicating with the sludge discharging port, and the front and back sides of the auger shell are respectively sealingly and fixedly connected with the fixed wall and the vertical side wall.

[0013] Further, the movable wall is a telescopic movable wall with adjustable length, the movable wall comprises a movable wall first part and a movable wall second part movably connected with the movable wall first part, and a length adjusting cylinder is arranged between the movable wall first part and the movable wall second part to drive the movable wall second part to extend or retract relative to the movable wall first part.

[0014] The integrated sedimentation tank is arranged in the aerobic tank, so that the land occupation space of the whole sewage treatment tank is reduced, in actual use, the sewage in the aerobic tank enters the inside of the integrated sedimentation tank through the water distribution channel and the water passing hole, the sludge is separated from the water through the inclined pipe filler, the clean water is collected by the water outlet groove on the upper side and flows into the next unit, the sludge is naturally settled in the sludge hopper, is concentrated again through the sludge settling port and then is discharged through the sludge falling port, and the concentrated sludge has a gravity greater than the buoyancy generated by the air bubbles of the aeration device, so that the sludge sinks into the aerobic tank through the sludge falling port. In order to prevent the air bubbles generated by the aeration device from rising and affecting the sludge-water separation effect, the gas release port is arranged on the upper side of the sludge falling port, the air bubbles can be discharged from the integrated sedimentation tank through the gas release port, and the air bubbles do not affect the sludge-water separation in the sludge hopper. BRIEF DESCRIPTION OF DRAWINGS

[0015] The above and other objects, features and advantages of the disclosed example embodiments will be more apparent from the following detailed description read in conjunction with the accompanying drawings, in which several embodiments of the present disclosure are shown by way of example, and wherein like or corresponding elements show like or corresponding parts, wherein:

[0016] Figure 1 is a use state diagram of embodiment 1 of the integrated sedimentation tank in the present application;

[0017] Figure 2 is Figure 1 is a distribution diagram of the integrated sedimentation tank in the present application in the aerobic tank;

[0018] Figure 3 is Figure 1 is a top view of the integrated sedimentation tank in the present application;

[0019] Figure 4 is Figure 3 is a 1-1 sectional view of the present application;

[0020] Figure 5 is Figure 3 is a 2-2 sectional view of the present application;

[0021] Figure 6 This is a schematic diagram of the structure of an integrated sedimentation tank according to Embodiment 2 of the present invention;

[0022] Figure 7 yes Figure 6 A schematic diagram showing the connection between the sludge discharge auger and the sludge discharge trough;

[0023] Figure 8 yes Figure 6 Enlarged view of point A in the image;

[0024] Figure 9 yes Figure 6 Enlarged view of point B in the image;

[0025] 1. Anaerobic tank; 2. Aerobic tank; 3. Integrated sedimentation tank; 4. Effluent trough; 5. Effluent pipe; 6. Aeration device; 7. Air bubbles generated by the aeration device; 8. Sedimentation tank body; 9. Inclined tube packing; 10. Sludge hopper; 11. Sludge discharge hopper; 12. Sludge inlet; 13. Sludge discharge inlet; 14. Air release port; 15. Liquid level line; 16. Guide wall; 17. Water distribution channel; 18. Clear water layer; 19. Front wall of sludge discharge hopper; 20. Rear wall of sludge discharge hopper; 21. Right side wall; 22. Movable wall; 23. Solid... 24. Fixed wall; 25. Vertical side wall; 26. Sludge discharge port; 27. Sludge discharge gate; 28. Gear; 29. ​​Sludge discharge auger; 30. Sludge discharge space; 31. Auger housing; 32. Spiral conveyor blades; 33. Housing sludge inlet; 34. Auger motor; 35. Auger shaft; 36. Sludge discharge trough; 37. Sludge discharge pipeline; 38. Length adjustment cylinder; 39. Tilting adjustment cylinder; 40. First part of movable wall; 41. Second part of movable wall; 42. Connecting rod; 43. Connecting rod clearance hole; 44. Water outlet. Detailed Implementation

[0026] To facilitate understanding of the present invention, a more detailed description is provided below with reference to the accompanying drawings and specific embodiments. Preferred embodiments of the invention are shown in the drawings. However, the invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a thorough and complete understanding of the disclosure of the invention.

[0027] It should be noted that, unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the invention.

[0028] Example 1 of an integrated sedimentation tank in this invention is as follows: Figures 1 to 5As shown: sewage treatment tank includes left and right arranged anaerobic tank 1 and aerobic tank 2, provided with four integrated bottom sink 3 in front and back direction interval sequence in aerobic tank 2, integrated sedimentation tank 3 includes sedimentation tank pool body 8, the upper end of sedimentation tank pool body 8 is supported and fixed on the pool edge of aerobic tank, the bottom of aerobic tank is provided with aeration device 6. The length direction of anaerobic tank and the length direction of aerobic tank are both arranged along the front and back direction.

[0029] The structure of each integrated sedimentation tank is same, the length of sedimentation tank pool body extends along the left and right direction, and the width of sedimentation tank pool body extends along the front and back direction.

[0030] The sedimentation tank pool body 8 of integrated sedimentation tank is used to be placed in aerobic tank, the left side wall of sedimentation tank pool body constitutes guide wall 16, the left side of guide wall 16 is provided with water baffle, water baffle and guide wall form water distribution channel 17, guide wall 16 is provided with water outlet 43, the lower end of water distribution channel is communicated with water outlet, and the upper end of water distribution channel is water distribution channel inlet communicated with aerobic tank.

[0031] The inside of sedimentation tank pool body is provided with inclined pipe filler 9, the upper side of inclined pipe filler in sedimentation tank pool body is provided with water outlet groove 4 for guiding clean water out of sedimentation tank pool body, the length of water outlet groove extends along the left and right direction, and the water outlet groove of each integrated sedimentation tank is connected to the same water outlet pipe 5, 18 in the figure represents clean water layer, and 15 represents liquid level line of clean water layer, and clean water can flow to water outlet pipe through water outlet groove.

[0032] The lower side of inclined pipe filler in sedimentation tank pool body is provided with sludge hopper 10 with large upper end and small lower end, the bottom of front and back side wall of sludge hopper is close to each other, the bottom of sludge hopper is sludge outlet 12, and the sludge in sludge hopper converges and concentrates under the action of sedimentation due to the action of front and back side wall of sludge hopper.

[0033] The bottom of sedimentation tank pool body has sludge falling hopper 11 with upper end communicated with sludge outlet and lower end communicated with aerobic tank, the bottom of sludge falling hopper is sludge falling outlet 13 deviated to one side of sludge outlet, and the side wall of sludge falling hopper and the side wall of sludge hopper form gas release port 14 located directly above sludge falling outlet. In the embodiment, sludge falling outlet is located on the front side of sludge outlet, and sludge falling outlet is slot-shaped structure with length extending along the left and right direction, and the width of sludge falling outlet and gas release port is less than half of the width of sludge outlet. In use, the bubbles generated by aeration device pass through sludge falling outlet from top to bottom, and then pass through gas release port from bottom to top, and the bubbles generated by aeration device will not enter sludge outlet, and will not affect the convergence and concentration of sludge at sludge outlet position, and the sludge after convergence and concentration slides to sludge falling outlet position along the back side wall of sludge falling hopper, and the weight of sludge after convergence and concentration is greater than the buoyancy of bubbles generated by aeration device, so the sludge can fall into aerobic tank through sludge falling outlet, which is equivalent to realizing the reflux of sludge without the help of reflux equipment.

[0034] The surface load of the integrated sedimentation tank is 1.2-3.5 m3 / m2.h.

[0035] The inclination angle of the inclined tube filler is 60°, and the vertical height is 0.866-1.5 m.

[0036] The water outlet groove is arranged along the length direction of the integrated sedimentation tank, and uniformly collects clean water.

[0037] The length-width ratio of the integrated sedimentation tank needs to be 1:2-1:4, the water distribution channel is arranged on the side with shorter length of the sedimentation tank, and the flow velocity of the water passing hole at the bottom of the flow guide wall needs to be less than or equal to 0.3 m / s, so that the uniform water distribution is increased by the low flow velocity.

[0038] The inclination angle of the front and rear sidewalls of the sludge hopper is 45°-60°, the flow velocity of the sludge outlet below the sludge hopper needs to be less than or equal to 0.1 m / s, and the sludge outlet is a lengthwise outlet arranged along the length direction of the sedimentation tank.

[0039] The sidewall connecting the sludge outlet and the sludge falling outlet needs to be inclined to one side, the rear sidewall of the sludge falling hopper needs to be more than 30 cm wider than the sludge outlet, so that the air bubbles are prevented from rising to the sludge outlet to agitate the sludge hopper area, and the inclination angle of the rear sidewall of the sludge falling hopper is 45°-60°.

[0040] In the integrated sedimentation tank, the sewage first enters the anaerobic tank, and then enters the aerobic tank, that is, the aeration tank, and according to the need, a suitable number of integrated sedimentation tanks are arranged in the aerobic tank to realize sludge sedimentation, which not only can reduce the land occupation space of the whole sewage treatment tank, but also can reduce the sludge backflow energy consumption by directly settling the sludge in the aerobic tank; according to different treatment scales, a plurality of integrated sedimentation tanks can be connected in parallel, which is suitable for small-scale and large-scale sewage treatment facilities; the two-stage sludge sedimentation area of the sludge hopper and the sludge falling hopper improves the sedimentation efficiency, the air bubbles entering through the sludge falling outlet are discharged through the air release outlet, the air release outlet can reduce the disturbance of the air bubbles to the sludge outlet, and the sludge is smoothly concentrated in the sludge hopper.

[0041] An embodiment 2 of the integrated sedimentation tank is shown in Figures 6 to 9

[0042] The embodiment 2 is different from the embodiment 1 in that:

[0043] In the embodiment 1, the sludge generated by the integrated sedimentation tank is continuously discharged into the aerobic tank, which may cause the sludge in the aerobic tank to be too much and too high, in order to solve the problem, in the embodiment 2,

[0044] ​The front side wall of the sludge hopper is a movable wall 22 hingedly connected to the pool body at the upper end. The hinged axis of the movable wall 22 extends in the left-right direction. A movable wall driving mechanism is arranged between the sludge hopper and the movable wall to drive the movable wall to swing about the hinged axis. The movable wall driving mechanism is a turnover adjusting cylinder 38. One end of the turnover adjusting cylinder is hingedly connected to the sludge hopper 11, and the other end is hingedly connected to the movable wall. When the piston rod of the turnover adjusting cylinder is extended, the movable wall is turned backward. In this embodiment, the movable wall is a telescopic movable wall with adjustable length. The movable wall includes a movable wall first part 39 and a movable wall second part 40 movably connected to the movable wall first part. The upper end of the movable wall first part is hingedly connected to the pool body, and the turnover adjusting cylinder is hingedly connected to the movable wall first part. A length adjusting cylinder 37 is arranged between the movable wall first part and the movable wall second part to drive the movable wall second part to extend or retract relative to the movable wall first part. The extension direction of the piston rod of the length adjusting cylinder is the same as the movement direction of the movable wall second part. The piston rod of the length adjusting cylinder is connected to the movable wall second part through a connecting rod 41. The lower end of the movable wall first part is provided with a connecting rod avoiding long hole 42. When the piston rod of the length adjusting cylinder is extended, the movable wall second part can extend out of the movable wall first part, thereby increasing the length of the entire movable wall.

[0045] The rear side wall of the sludge hopper is a fixed wall 23 fixedly connected to the pool body at the upper end. The fixed wall 23 is provided with a sludge discharge port 25 extending in the left-right direction. A sludge discharge door 26 capable of being opened and closed is arranged at the sludge discharge port 25. Specifically, the sludge discharge door 26 is movably connected to the pool body. A sludge discharge door driving motor is arranged on the pool body. The power output end of the sludge discharge door driving motor is connected with a gear 27. The rear side of the upper end of the sludge discharge door is provided with a rack in meshing transmission with the gear. The gear transmission can drive the sludge discharge door to move up and down. When the sludge discharge door moves upward, the sludge discharge port can be opened. When the sludge discharge door moves downward, the sludge discharge port can be closed.

[0046] The pool body further includes a vertical side wall 24 located at the rear side of the fixed wall. The left and right ends of the fixed wall 23 and the vertical side wall 24 are respectively provided with left and right side walls. The fixed wall, the vertical side wall, the left side wall, and the right side wall enclose a sludge discharge space 29. A sludge discharge auger 28 with an axis extending in the left-right direction is arranged in the sludge discharge space 29. The right side of the sludge discharge auger is provided with a sludge discharge chute 35. The integrated sedimentation tank further includes a sludge discharge pump connected to the sludge discharge chute 35 through a sludge discharge pipeline 36. The sludge discharge auger includes an auger housing and an auger shaft 34 extending in the left-right direction and arranged in the auger housing. The auger shaft 34 is provided with a spiral conveying blade 31. The upper end of the auger housing is provided with a housing sludge inlet 32 extending in the left-right direction and communicating with the sludge discharge port. The front and rear sides of the auger housing are sealingly and fixedly connected with the fixed wall and the vertical side wall, respectively. The auger shaft is driven by an auger motor 33.

[0047] In normal use, as shown in Figure 6 When the sludge concentration in the aerobic tank is relatively high, the movable wall second part is extended, the movable wall driving mechanism drives the movable wall as a whole to turn over backward, the sludge door moves upward to open the sludge outlet, the sludge in the sludge hopper is guided to the sludge outlet through the movable wall, the sludge enters the auger housing through the sludge outlet and the housing sludge inlet, the auger shaft rotates with the spiral conveying blade to convey the sludge from left to right into the sludge chute, and the sludge pump discharges the sludge in the sludge chute to avoid excessive sludge concentration in the aerobic tank.

[0048] In the above description of the present specification, unless otherwise explicitly specified and limited,

[0049] The terms "fixed", "mounted", "connected" or "connected" and the like should be understood broadly. For example, as for the term "connected", it can be fixed connection, or detachable connection, or integral; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal communication of two elements or the interaction relationship between two elements. Therefore, unless otherwise explicitly limited in the present specification, the above-mentioned terms can be understood by those skilled in the art according to the specific meaning of the terms in the present application.

[0050] According to the above description of the present specification, those skilled in the art can also understand that the terms used according to the above description of the present specification, such as "up", "down", "front", "back", "left", "right", "length", "width", "thickness", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", "center", "longitudinal", "transverse", "clockwise" or "counterclockwise" and other terms indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the drawings of the present specification, which is only for the purpose of facilitating the description of the present application and simplifying the description, and is not explicitly or implicitly indicated that the device or element involved must have the described specific orientation, be constructed and operated in a specific orientation, therefore the above-mentioned orientation or positional relationship terms cannot be understood or interpreted as a limitation on the present application.

[0051] In addition, the terms "first" or "second" and the like used in the present specification are terms used to refer to numbers or ordinal numbers only for the purpose of description, and cannot be understood as indicating relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first" or "second" can explicitly or implicitly include at least one of the features. In the description of the present specification, the meaning of "a plurality of" is at least two, for example, two, three or more, etc., unless otherwise explicitly specified and limited.

[0052] Finally, it should be noted that the above examples are only used to illustrate the technical solutions of the present application, and are not intended to limit the same; although the present application has been described in detail with reference to the foregoing examples, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing examples, or make equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. An integrated settling basin characterized by: The integrated sedimentation tank comprises a sedimentation tank body used for being placed in an aerobic tank, a water passing hole is arranged on the side wall of the sedimentation tank body, a water distribution channel with a bottom connected with the water passing hole is arranged on the outside of the water passing hole of the sedimentation tank body, the upper end of the water distribution channel is a water distribution channel water inlet communicated with the aerobic tank, an inclined pipe filler is arranged in the inside of the sedimentation tank body, a water outlet groove for guiding clean water out of the sedimentation tank body is arranged on the upper side of the inclined pipe filler in the sedimentation tank body, a sludge hopper with a large upper part and a small lower part is arranged on the lower side of the inclined pipe filler of the sedimentation tank body, the bottom of the sludge hopper is a sludge falling port, the bottom of the sedimentation tank body has a sludge falling hopper with an upper end communicated with the sludge falling port and a lower end communicated with the aerobic tank, the bottom of the sludge falling hopper is a sludge falling port deviated to one side of the sludge falling port, the sludge falling port is located on the front side of the sludge falling port, the front side wall of the sludge hopper is a movable wall hingedly connected with the sedimentation tank body, the hinging axis of the movable wall extends along the left-right direction, a movable wall driving mechanism is arranged between the sludge falling hopper and the movable wall to drive the movable wall to swing around the hinging axis, the rear side wall of the sludge hopper is a fixed wall fixedly connected with the sedimentation tank body, the fixed wall is provided with a sludge discharging port extending along the left-right direction, the sludge discharging port is provided with a sludge discharging door capable of being opened and closed, the sedimentation tank body further comprises a vertical side wall located on the rear side of the fixed wall, the left and right ends of the fixed wall and the vertical side wall are respectively provided with a left side wall and a right side wall, the fixed wall, the vertical side wall, the left side wall and the right side wall enclose a sludge discharging space, a sludge discharging auger with an axis extending along the left-right direction is arranged in the sludge discharging space, a sludge discharging groove is arranged on the right side of the sludge discharging auger, and the integrated sedimentation tank further comprises a sludge discharging pump connected with the sludge discharging groove through a sludge discharging pipeline.

2. The integrated settling basin of claim 1, wherein: The length of the sedimentation tank body extends along the left-right direction, the width of the sedimentation tank body extends along the front-rear direction, the water distribution channel is located on the left side of the sedimentation tank body, the water passing hole is arranged on the left side wall of the sedimentation tank body, the length of the sludge falling port extends along the left-right direction, the length of the sludge falling port extends along the left-right direction, and the length of the water outlet groove extends along the left-right direction.

3. The integrated settling basin of claim 1, wherein: The width of the sludge falling port and the gas releasing port is less than half of the width of the sludge falling port.

4. The integrated settling basin of claim 1, wherein: The sludge discharging auger comprises an auger shell and an auger shaft extending along the left-right direction in the auger shell, the auger shaft is provided with a spiral conveying blade, the upper end of the auger shell is provided with a shell sludge inlet communicated with the sludge discharging port and extending along the left-right direction, and the front and rear sides of the auger shell are sealingly and fixedly connected with the fixed wall and the vertical side wall respectively.

5. The integrated settling basin of claim 1, wherein: The movable wall is a telescopic movable wall with adjustable length, the movable wall comprises a movable wall first part and a movable wall second part movably connected with the movable wall first part, and a length adjusting cylinder is arranged between the movable wall first part and the movable wall second part to drive the movable wall second part to extend or retract relative to the movable wall first part.

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