An internal circulation vertical integrated sewage treatment equipment

Abstract

The invention relates to the technical field of sewage treatment, and in particular to an internal circulation vertical integrated sewage treatment equipment, comprising a vertical reactor for nitrifying and denitrifying sewage, the reactor is connected with a water distribution device for distributing water to the inside of the reactor, the upper and lower end faces of the reactor are both sealed, a water outlet is provided on the reactor, a conical sedimentation tank with a downward tip is provided on one side of the reactor, the sedimentation tank is fixedly connected to the reactor, a water outlet pipe is connected between the water outlet and the sedimentation tank, the water outlet pipe is connected with the inside of the sedimentation tank at a position close to the tip of the sedimentation tank, a mud discharge pipe is connected at a position close to the tip of the sedimentation tank, and a water outlet trough is provided at a position close to the upper end face of the sedimentation tank, thereby achieving the effect of saving equipment such as a mud scraper and simplifying the structure of the sewage treatment equipment.

Description

Technical Field

[0001] The invention relates to the technical field of sewage treatment, and in particular to an internal circulation vertical integrated sewage treatment equipment. Background Art

[0002] At present, with the rapid development of economy, people's lives are getting better day by day, but the environmental awareness is poor, and domestic sewage is directly discharged outside, which poses a threat to the ecological environment.

[0003] The existing Chinese invention patent with publication number CN106310736A discloses an integrated sewage treatment equipment, including a box body, a partition that divides the box body into a stirring chamber and a sedimentation chamber; a stirring shaft is installed in the stirring chamber; a fixing frame is installed on the stirring shaft, and a stirring blade is hingedly installed on the fixing frame; a vertical drug adding pipeline is also provided in the tank body, and a plurality of drug inlet holes are opened on the drug adding pipeline; a conveying pipeline connecting the stirring chamber and the sedimentation chamber is also provided in the box body; a mesh plate is also provided in the sedimentation chamber, the mesh plate is located above the water outlet, and an inclined tube arranged in a honeycomb shape is installed on the mesh plate; an overflow plate is also provided above the inclined tube; a clean water storage tank is also installed in the sedimentation chamber; a vertical push plate is also provided at the bottom of the sedimentation chamber, and a pushing device is also installed on the box body, and the pushing device is fixed to the push plate.

[0004] The above-mentioned prior art solutions have the following defects: after the sewage is flocculated and precipitated in sequence using the sewage treatment equipment in the prior art, a pushing device is required to drive a pushing plate (similar to a mud scraper) to push the sludge at the bottom of the sedimentation chamber into the sewage pipe. The structure is relatively complicated and the sludge treatment process is relatively troublesome. Summary of the invention

[0005] The purpose of the present invention is to provide an internal circulation vertical integrated sewage treatment equipment, which saves equipment such as a scraper and simplifies the structure of the sewage treatment equipment.

[0006] The above technical objectives of the present invention are achieved through the following technical solutions:

[0007] An internal circulation vertical integrated sewage treatment equipment comprises a vertical reactor for nitrifying and denitrifying sewage, the reactor is connected with a water distribution device for distributing water to the inside of the reactor, the upper and lower end faces of the reactor are sealed, a water outlet is opened on the reactor, a conical sedimentation tank with a downward tip is arranged on one side of the reactor, the sedimentation tank is fixedly connected to the reactor, an outlet pipe is connected between the outlet and the sedimentation tank, the outlet pipe is connected with the inside of the sedimentation tank near the tip of the sedimentation tank, a mud discharge pipe is connected near the tip of the sedimentation tank, and a water outlet trough is arranged near the upper end face of the sedimentation tank.

[0008] By adopting the above technical solution, when sewage is treated by sewage treatment equipment, the sewage completes the nitrification and denitrification process inside the reactor. As the water distribution device distributes water to the inside of the reactor, the sewage inside the reactor that has undergone nitrification and denitrification will enter the sedimentation tank through the outlet and the outlet pipe; the cross-sectional shape of the sedimentation tank is a cone with the tip downward, and the sludge generated by the sewage inside the sedimentation tank will flow along the inner wall of the sedimentation tank to the bottom of the sedimentation tank. The outlet pipe is connected to the inside of the sedimentation tank at a position close to the tip of the sedimentation tank, so the sediment inside the sedimentation tank will not accumulate at the bottom of the sedimentation tank, but will flow to the outside of the sedimentation tank through the sludge discharge pipe in the form of activated sludge, so that people do not need to use a scraper to collect and discharge the sludge inside the sedimentation tank, simplifying the structure of the sewage treatment equipment; and the supernatant after precipitation will flow into the outlet tank, and people can collect the supernatant at the end of the outlet tank away from the sedimentation tank; because the sedimentation tank is fixedly connected to the reactor, when people move the reactor (or sedimentation tank), they will drive the sedimentation tank (or reactor) to move together, achieving the effect of facilitating people to transport the sewage treatment equipment.

[0009] In a preferred example, the present invention can be further configured as follows: a vertical first guide wall and a second guide wall are arranged inside the reactor, the first guide wall and the second guide wall are parallel to each other and are fixedly connected to the side wall of the reactor, the water outlet is opened on the side of the first guide wall away from the second guide wall, there are gaps between the upper and lower end surfaces of the first guide wall and the second guide wall and the upper and lower end surfaces of the reactor, an air lifting device for aerating between the first guide wall and the second guide wall is arranged on the reactor, and an air chamber connected to the interior of the reactor is arranged above the reactor.

[0010] By adopting the above technical solution, the air lifting device can aerate the space between the first guide wall and the second guide wall, so the flow speed of the sewage between the first guide wall and the second guide wall will be greater than the flow speed of the sewage on the side where the first guide wall and the second guide wall are far away from each other. The flow speed difference of the sewage will cause the sewage to be lifted to the highest point between the first guide wall and the second guide wall and then diverted to the side where the first guide wall and the second guide wall are far away from each other. In this way, the sewage will flow continuously inside the reactor, which has a better stirring effect on the sewage, and there is no need for people to install a sewage stirring device inside the reactor. The stirring equipment further simplifies the structure of the sewage treatment equipment; and when the air lifting device aerates the space between the first guide wall and the second guide wall, the dissolved oxygen provided by the air lifting device decreases according to the gradient as the water flows upward, that is, the air lifting device can provide a good aerobic space for the area between the first guide wall and the second guide wall, so that the sewage can achieve the nitrification process; the side where the first guide wall and the second guide wall are away from each other is anoxic space, so that the sewage can achieve the denitrification process; an air chamber is arranged above the reactor, and the nitrogen generated during the denitrification process will enter the air chamber.

[0011] In a preferred example, the present invention can be further configured as follows: the air lifting device includes a plurality of aeration tubes arranged inside the reactor and abutting against the lower end surface of the reactor, both ends of the aeration tubes are sealed, upward aeration holes are opened on the circumferential surface of the aeration tubes, and the reactor is provided with an air supply component for blowing air into the aeration tubes.

[0012] By adopting the above technical solution, when using the air lifting device, people use the air supply component to inflate the inside of the aeration tube, and the two ends of the aeration tube are sealed. The gas inside the aeration tube will enter the reactor at the position of the aeration hole on the aeration tube, thus completing the aeration process.

[0013] In a preferred example, the present invention can be further configured as follows: the air supply assembly includes a main pipe, which is horizontally arranged inside the reactor and is connected to multiple aeration pipes at the same time. One end of the main pipe is sealed, and the other end extends to the outside of the reactor and is connected to an air pump.

[0014] By adopting the above technical solution, when it is necessary to use the air supply assembly to inflate the inside of the aeration tube, the air pump is turned on, and the air pump will inflate the inside of multiple aeration tubes through the main pipe at the same time.

[0015] In a preferred example, the present invention can be further configured such that the axial direction of the aeration pipe is parallel to the plane where the first guide wall is located, and the plurality of aeration pipes are arranged between the first guide wall and the second guide wall in a densely distributed manner from both sides to the center.

[0016] By adopting the above technical solution, the bubbles required to disturb the sewage in the area between the first guide wall and the second guide wall gradually decrease from the center to the sides, so the aeration pipes need to be arranged between the first guide wall and the second guide wall in a manner that tends to be denser from the sides to the center.

[0017] In a preferred example, the present invention can be further configured such that the tip of the sedimentation tank intersects with the edge of the lower end surface of the reactor on the side of the second guide wall away from the first guide wall, and the upper end surface of the reactor is located inside the upper end surface of the sedimentation tank.

[0018] By adopting the above technical solution, the area formed by the sedimentation tank and the reactor is the effective sedimentation area of ​​the sedimentation tank. The volume of the effective sedimentation area is smaller than the overall volume of the sedimentation tank, which can accelerate the sedimentation speed of sewage inside the sedimentation area.

[0019] In a preferred example, the present invention can be further configured as follows: a collecting trough connected to the water outlet is provided on the outside of the reactor, and the collecting trough extends to the outside of the sedimentation tank at one end away from the reactor. There are two outlet pipes, and the two outlet pipes are symmetrically arranged on both sides of the collecting trough.

[0020] By adopting the above technical solution, as the sewage inside the reactor gradually increases, the sewage inside the reactor will enter the collecting tank through the outlet, and finally enter the collecting tank through the outlet pipe; two outlet pipes are set up, which can speed up the speed of the sewage inside the collecting tank flowing into the sedimentation tank.

[0021] In a preferred example, the present invention can be further configured such that the highest point of the water outlet is flush with the lower surface of the upper end face of the reactor, the cross-sectional shape of the collecting tank is triangular, and the cross-sectional area of ​​the collecting tank gradually increases from bottom to top.

[0022] By adopting the above technical solution, because the water distribution device will continuously distribute water into the reactor, and the air lifting device will aerate the inside of the reactor, this will cause the flow speed of the sewage inside the reactor to be too fast, and the cross-sectional area of ​​the collecting tank will gradually increase from bottom to top. In this way, when the sewage inside the reactor flows into the collecting tank, the water flow speed will be appropriately slowed down, reducing the possibility of sewage flowing from the top of the collecting tank to the outside.

[0023] In a preferred example, the present invention can be further configured as follows: the water distribution device includes a water distribution box arranged on one side of the reactor, the water distribution box is connected to a water distribution pipe, the interior of the second guide wall is hollow, the end of the water distribution pipe away from the water distribution box passes through the side wall of the water distribution box and then communicates with the interior of the second guide wall, a water distribution hole is opened on the side of the second guide wall away from the first guide wall, and a water distribution pump is arranged on the water distribution pipe.

[0024] By adopting the above technical solution, when the water distribution device is working, there is sewage inside the water tank, and the water distribution pump is turned on. The water distribution pump will transport the sewage inside the water distribution tank to the inside of the second guide wall through the water distribution pipe. Finally, the sewage inside the second guide wall will flow from the position of the water distribution hole to the side of the second guide wall away from the first guide wall, which can promote the flow of sewage inside the reactor; and when the water distribution device distributes water to the side of the second guide wall away from the first guide wall, the sewage on the side of the second guide wall away from the first guide wall will gradually increase, so that when the sewage between the first guide wall and the second guide wall rises to the highest point, most of it will flow in the direction close to the first guide wall, accelerating the entry of the sewage into the sedimentation tank.

[0025] In a preferred example, the present invention can be further configured as follows: a sludge return pipe connected to the interior of the sedimentation tank is provided near the tip of the sedimentation tank, and one end of the sludge return pipe away from the sedimentation tank is connected to the interior of the reactor on the side of the second guide wall away from the first guide wall, and control valves are provided on the sludge return pipe and the sludge discharge pipe.

[0026] By adopting the above technical solution, when the sewage inside the sedimentation tank is not completely reacted in the reactor, people can close the control valve on the sludge discharge pipe and open the control valve on the sludge return pipe. At this time, the activated sludge inside the sedimentation tank will flow back to the side of the second guide wall away from the first guide wall, so that the activated sludge can be further nitrified and denitrified inside the reactor; and the water distribution device will distribute water to the side of the second guide wall away from the first guide wall, so that the sewage entering the reactor can make the activated sludge flowing back into the reactor quickly dispersed in the reactor, thereby accelerating the nitrification and denitrification of the activated sludge.

[0027] In summary, the present invention has the following technical effects:

[0028] 1. By setting up a sewage treatment equipment with a cone-shaped sedimentation tank with the tip pointing downward, the sewage will complete the sedimentation process in the sedimentation tank after completing the nitrification and denitrification process in the reactor. The activated sludge generated in the sedimentation process will flow along the side wall of the sedimentation tank through the sludge discharge pipe to the outside of the sedimentation tank. In this way, there is no need to use equipment such as a scraper to treat the sludge in the sedimentation tank, thereby achieving the effect of simplifying the structure of the sewage treatment equipment;

[0029] 2. By setting up the first guide wall and the second guide wall, the first guide wall and the second guide wall divide the reactor into two anoxic zones and one aerobic zone, so that the sewage can be fully nitrified and denitrified inside the reactor. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is the overall structural diagram of the present invention;

[0031] Figure 2is a structural diagram highlighting the internal structure of the present invention;

[0032] Figure 3 It is a partial view highlighting the aeration pipe structure of the present invention.

[0033] In the figure, 1. reactor; 11. first guide wall; 12. second guide wall; 13. air chamber; 14. water outlet; 15. collecting tank; 16. water distribution hole; 2. water outlet pipe; 3. sedimentation tank; 31. water outlet trough; 32. sludge discharge pipe; 33. sludge return pipe; 34. control valve; 4. water distribution device; 41. water distribution tank; 42. water distribution pipe; 43. water distribution pump; 5. air lifting device; 51. aeration pipe; 52. air supply assembly; 521. air pump; 522. main pipe. DETAILED DESCRIPTION

[0034] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0035] Reference Figure 1 and Figure 2 The present invention provides an internal circulation vertical integrated sewage treatment equipment, comprising a reactor 1, a water outlet pipe 2, a sedimentation tank 3, a water distribution device 4, a water outlet trough 31 and a mud discharge pipe 32, the reactor 1 and the sedimentation tank 3 are both sealed, the reactor 1 is in the shape of a cylinder with a vertical axis, the cross-sectional shape of the sedimentation tank 3 is in the shape of an oblique cone with a downward tip, the tip of the sedimentation tank 3 intersects with the reactor 1 at the edge of the lower end surface of the reactor 1, the upper end surface of the reactor 1 is flush with the upper end surface of the sedimentation tank 3, and the upper end surface of the reactor 1 is located inside the upper end surface of the sedimentation tank 3; one end of the water outlet pipe 2 is connected to the inside of the sedimentation tank 3, and the other end is connected to the inside of the sedimentation tank 3 at a position close to the tip of the sedimentation tank 3, the water distribution device 4 is arranged on one side of the reactor 1, one end of the mud discharge pipe 32 is connected to the inside of the sedimentation tank 3 at a position close to the tip of the sedimentation tank 3, and the other end extends in a direction away from the sedimentation tank 3, the upper surface of the water outlet trough 31 is flush with the upper surface of the sedimentation tank 3, one end of the water outlet trough 31 is connected to the inside of the sedimentation tank 3, and the other end extends in a direction away from the sedimentation tank 3.

[0036] When sewage treatment equipment is needed to treat sewage, people transport sewage to the inside of reactor 1 through water distribution device 4, and sewage can complete nitrification and denitrification process inside reactor 1; then sewage will enter sedimentation tank 3, and sewage will complete sedimentation process inside sedimentation tank 3. The sludge generated during sedimentation process will flow along the inner wall of sedimentation tank 3 toward the direction close to the tip of sedimentation tank 3, and finally the sludge at the bottom of sedimentation tank 3 will be discharged to the outside of sedimentation tank 3 through sludge discharge pipe 32. The outlet pipe 2 is connected with the inside of sedimentation tank 3 near the tip of sedimentation tank 3, so the sludge at the bottom of sedimentation tank 3 is activated sludge, which can reduce the possibility of clogging of sludge discharge pipe 32; the supernatant inside sedimentation tank 3 will flow into the outlet trough 31, and people can collect the supernatant at the end of outlet trough 31 away from sedimentation tank 3.

[0037] Reference Figure 2 In order to enable the sewage to undergo sufficient nitrification and denitrification processes inside the reactor 1, a vertical first guide wall 11 and a second guide wall 12 are arranged inside the reactor 1. The first guide wall 11 and the second guide wall 12 are parallel to each other. There are gaps between the upper and lower end surfaces of the first guide wall 11 and the second guide wall 12 and the upper and lower end surfaces of the reactor 1. The reactor 1 is provided with an air lifting device 5 for aerating between the first guide wall 11 and the second guide wall 12. An air chamber 13 communicating with the interior of the reactor 1 is arranged above the reactor 1; the water distribution device 4 is located at the second guide wall 11 and the second guide wall 12. The side of the flow wall 12 away from the first guide wall 11 is connected to the interior of the reactor 1. The side of the first guide wall 11 away from the second guide wall 12 is provided with a water outlet 14 that penetrates the side wall of the reactor 1. The highest point of the water outlet 14 is flush with the lower surface of the upper end face of the reactor 1. A collecting trough 15 is arranged at the position of the outer water outlet 14 of the reactor 1. The end of the collecting trough 15 away from the reactor 1 extends to the outside of the sedimentation tank 3. The end of the water outlet pipe 2 close to the reactor 1 is connected to the interior of the collecting trough 15. There are two water outlet pipes 2 in total, and the two water outlet pipes 2 are symmetrically arranged on both sides of the collecting trough 15.

[0038] The air lifting device 5 can aerate between the first guide wall 11 and the second guide wall 12. The flow rate of the sewage between the first guide wall 11 and the second guide wall 12 will be greater than the flow rate of the sewage on the side where the first guide wall 11 and the second guide wall 12 are far away from each other. The flow rate difference of the sewage will cause the sewage to be lifted to the highest point between the first guide wall 11 and the second guide wall 12 and then diverted to the side where the first guide wall 11 and the second guide wall 12 are far away from each other. In this way, the sewage will flow continuously inside the reactor 1, which has a better effect on the sewage. The stirring effect is achieved, so there is no need for people to install equipment for stirring sewage inside the reactor 1, which further simplifies the structure of the sewage treatment equipment; because the water distribution device 4 will distribute water to the side of the second guide wall 12 away from the first guide wall 11, the sewage on the side of the second guide wall 12 away from the first guide wall 11 will gradually increase, so that when the sewage between the first guide wall 11 and the second guide wall 12 rises to the highest point, most of it will flow in the direction close to the first guide wall 11, which will accelerate the flow of sewage inside the reactor 1 into the sedimentation tank 3.

[0039] When the air lifting device 5 aerates between the first guide wall 11 and the second guide wall 12, the dissolved oxygen provided by the air lifting device 5 decreases according to the gradient as the water flows upward, that is, the air lifting device 5 can provide a good aerobic space for the area between the first guide wall 11 and the second guide wall 12, so that the sewage can achieve the nitrification process; the side where the first guide wall 11 and the second guide wall 12 are away from each other is an anoxic space, so that the sewage can achieve the denitrification process; an air chamber 13 is arranged above the reactor 1, and the air chamber 13 is a hollow shell connected to the inside of the reactor 1, and the nitrogen generated during the denitrification process will enter the inside of the air chamber 13.

[0040] Because the water distribution device 4 will continuously distribute water into the reactor 1, and the air lifting device 5 will aerate the reactor 1, this will cause the flow speed of the sewage inside the reactor 1 to be too fast, and the cross-sectional area of ​​the collecting tank 15 will gradually increase from bottom to top. In this way, when the sewage inside the reactor 1 flows into the collecting tank 15, the water flow speed will be appropriately slowed down, reducing the possibility of sewage flowing from the top of the collecting tank 15 to the outside.

[0041] Reference Figure 2 The activated sludge at the bottom of the sedimentation tank 3 may need to undergo further nitrification and denitrification inside the reactor 1. A sludge return pipe 33 connected to the interior of the sedimentation tank 3 is provided near the tip of the sedimentation tank 3. The end of the sludge return pipe 33 away from the sedimentation tank 3 is connected to the interior of the reactor 1 on the side of the second guide wall 12 away from the first guide wall 11. The activated sludge inside the sedimentation tank 3 can flow into the sedimentation tank 3 under the action of its own gravity and pressure. Control valves 34 are provided on the sludge return pipe 33 and the sludge discharge pipe 32.

[0042] Reference Figure 3 The air lifting device 5 includes an aeration pipe 51 and an air supply assembly 52. ​​A plurality of aeration pipes 51 are provided. In the present invention, a total of five aeration pipes 51 are provided. The axis of the aeration pipe 51 is horizontal and parallel to the plane where the first guide wall 11 is located. The five aeration pipes 51 are arranged densely from both sides to the center between the first guide wall 11 and the second guide wall 12. Both ends of the aeration pipe 51 are sealed. A plurality of aeration holes are opened upward on the side of the aeration pipe 51. The air supply assembly 52 is provided on the reactor 1 and communicated with the inside of the aeration pipe 51. When the air lifting device 5 is needed to aerate the inside of the reactor 1, the air supply assembly 52 is turned on, and the air supply assembly 52 will blow air into the inside of the aeration pipe 51. The air inside the aeration pipe 51 will enter the area between the first guide wall 11 and the second guide wall 12 through the aeration holes.

[0043] Reference Figure 3 The air supply assembly 52 includes an air pump 521 and a main pipe 522. The main pipe 522 is horizontally arranged above the bottom surface of the reactor 1. The axial direction of the main pipe 522 is perpendicular to the axial direction of the aeration pipe 51. The five aeration pipes 51 are all connected to the inside of the main pipe 522. One end of the main pipe 522 is sealed, and the other end extends to the outside of the reactor 1 and is connected to the air pump 521.

[0044] Reference Figure 1 and Figure 2 The water distribution device 4 includes a water distribution box 41, a water distribution pipe 42 and a water distribution pump 43. The water distribution box 41 is arranged on one side of the reactor 1. The interior of the second guide wall 12 is hollow. One end of the water distribution pipe 42 is connected to the interior of the water distribution box 41, and the other end passes through the side wall of the reactor 1 and then extends to the interior of the second guide wall 12 and is connected to the interior of the second guide wall 12. A water distribution hole 16 connected to the interior of the second guide wall 12 is provided on the side of the second guide wall 12 away from the first guide wall 11. When the water distribution device 4 is needed, the water distribution pump 43 is turned on. The water distribution pump 43 will transport the aqueous solution in the water distribution box 41 to the interior of the second guide wall 12 through the water distribution pipe 42. Finally, the aqueous solution in the second guide wall 12 will enter the reactor 1 through the water distribution hole 16.

[0045] In summary, the use process of the present invention is as follows: people add the sewage to be treated into the water distribution tank 41, and the water distribution pump 43 can transport the sewage in the water distribution tank 41 to the reactor 1 through the water distribution pipe 42; turn on the air pump 521, and the air pump 521 inflates the aeration pipe 51 through the main pipe 522, and the air in the aeration pipe 51 will enter the reactor 1 through the aeration hole, so that the sewage can form an internal circulation water flow in the reactor 1 with the middle water flowing upward and the water flowing downward on both sides, so that the sewage can be fully stirred; after nitrification and denitrification in the reactor 1, the sewage enters the sedimentation tank 3 through the outlet 14, the collecting tank 15 and the outlet pipe 2, and the sewage is precipitated in the sedimentation tank 3, and the activated sludge will move downward along the inner wall of the sedimentation tank 3, and finally flow to the outside of the sedimentation tank 3 through the sludge discharge pipe 32.

[0046] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed. However, as long as they are within the scope of the claims of the present invention, they are protected by the patent law.

Claims

1. An internal circulation vertical integrated sewage treatment equipment, characterized in that: The invention comprises a vertical reactor (1) for nitrifying and denitrifying sewage, wherein the reactor (1) is connected to a water distribution device (4) for distributing water to the inside of the reactor (1), the upper and lower end surfaces of the reactor (1) are both sealed, the reactor (1) is provided with a water outlet (14), a conical sedimentation tank (3) with a tip facing downward is provided on one side of the reactor (1), the sedimentation tank (3) is fixedly connected to the reactor (1), an outlet pipe (2) is connected between the outlet (14) and the sedimentation tank (3), the outlet pipe (2) is connected to the inside of the sedimentation tank (3) at a position close to the tip of the sedimentation tank (3), a mud discharge pipe (32) is connected to a position close to the tip of the sedimentation tank (3), and a water outlet trough (31) is provided at a position close to the upper end surface of the sedimentation tank (3); The reactor (1) is in the shape of a cylinder with a vertical axis, the tip of the sedimentation tank (3) intersects with the reactor (1) at the edge of the lower end surface of the reactor (1), the upper end surface of the reactor (1) is flush with the upper end surface of the sedimentation tank (3), and the upper end surface of the reactor (1) is located inside the upper end surface of the sedimentation tank (3); A first vertical flow guide wall (11) and a second vertical flow guide wall (12) are arranged inside the reactor (1); the first flow guide wall (11) and the second flow guide wall (12) are parallel to each other and are fixedly connected to the side wall of the reactor (1); a water outlet (14) is provided on a side of the first flow guide wall (11) away from the second flow guide wall (12); gaps exist between the upper and lower end surfaces of the first flow guide wall (11) and the second flow guide wall (12) and the upper and lower end surfaces of the reactor (1); an air lifting device (5) for aerating between the first flow guide wall (11) and the second flow guide wall (12) is arranged on the reactor (1); and an air chamber (13) communicating with the interior of the reactor (1) is arranged above the reactor (1); The water distribution device (4) is connected to the interior of the reactor (1) on a side of the second guide wall (12) away from the first guide wall (11).

2. The internal circulation vertical integrated sewage treatment equipment according to claim 1 is characterized by: The air lifting device (5) comprises a plurality of aeration tubes (51) arranged inside the reactor (1) and abutting against the lower end surface of the reactor (1); both ends of the aeration tubes (51) are sealed; upward aeration holes are provided on the circumference of the aeration tubes (51); and an air supply assembly (52) for blowing air into the aeration tubes (51) is provided on the reactor (1).

3. The internal circulation vertical integrated sewage treatment equipment according to claim 2 is characterized by: The air supply assembly (52) comprises a main pipe (522), which is horizontally arranged inside the reactor (1) and is simultaneously connected to a plurality of aeration pipes (51); one end of the main pipe (522) is sealed, and the other end extends to the outside of the reactor (1) and is connected to an air pump (521).

4. The internal circulation vertical integrated sewage treatment equipment according to claim 2 is characterized by: The axial direction of the aeration tube (51) is parallel to the plane where the first guide wall (11) is located, and the plurality of aeration tubes (51) are arranged between the first guide wall (11) and the second guide wall (12) in a manner that tends to be denser from both sides to the center.

5. The internal circulation vertical integrated sewage treatment equipment according to claim 1 is characterized by: The tip of the sedimentation tank (3) intersects with the edge of the lower end surface of the reactor (1) on the side of the second guide wall (12) away from the first guide wall (11), and the upper end surface of the reactor (1) is located inside the upper end surface of the sedimentation tank (3).

6. The internal circulation vertical integrated sewage treatment equipment according to claim 5 is characterized by: A collecting tank (15) connected to the water outlet (14) is arranged outside the reactor (1), and one end of the collecting tank (15) away from the reactor (1) extends to the outside of the sedimentation tank (3). Two water outlet pipes (2) are arranged in total, and the two water outlet pipes (2) are symmetrically arranged on both sides of the collecting tank (15).

7. The internal circulation vertical integrated sewage treatment equipment according to claim 6 is characterized by: The highest point of the water outlet (14) is flush with the lower surface of the upper end surface of the reactor (1), the cross-sectional shape of the collecting groove (15) is triangular, and the cross-sectional area of ​​the collecting groove (15) gradually increases from bottom to top.

8. The internal circulation vertical integrated sewage treatment equipment according to claim 1 is characterized by: The water distribution device (4) comprises a water distribution box (41) arranged on one side of the reactor (1), the water distribution box (41) is connected to a water distribution pipe (42), the interior of the second guide wall (12) is hollow, one end of the water distribution pipe (42) away from the water distribution box (41) passes through the side wall of the water distribution box (41) and is connected to the interior of the second guide wall (12), a water distribution hole (16) is provided on the side of the second guide wall (12) away from the first guide wall (11), and a water distribution pump (43) is provided on the water distribution pipe (42).

9. The internal circulation vertical integrated sewage treatment equipment according to claim 8 is characterized by: A sludge return pipe (33) connected to the interior of the sedimentation tank (3) is provided at a position close to the tip of the sedimentation tank (3); an end of the sludge return pipe (33) away from the sedimentation tank (3) is connected to the interior of the reactor (1) on a side of the second guide wall (12) away from the first guide wall (11); and control valves (34) are provided on the sludge return pipe (33) and the sludge discharge pipe (32).

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