CN111470738A

CN111470738A - Sewage treatment device

Info

Publication number: CN111470738A
Application number: CN202010456617.XA
Authority: CN
Inventors: 张俊峰
Original assignee: Yuxi Environmental Protection Technology Co ltd
Current assignee: Yuxi Environmental Protection Technology Co ltd
Priority date: 2020-05-26
Filing date: 2020-05-26
Publication date: 2020-07-31

Abstract

The invention discloses a sewage treatment device, which comprises a machine room, an anaerobic tank, an aerobic tank and a sedimentation tank which are sequentially arranged from left to right, wherein the anaerobic tank is provided with a water inlet, the sedimentation tank is provided with a water outlet, an ozone machine is arranged in the machine room, an aeration mechanism is arranged in the aerobic tank, the aeration mechanism comprises a plurality of aerators, a vortex fan connected with the aerators is arranged in the machine room, a stirring pump is arranged in the anaerobic tank, a backflow mechanism is arranged in the sedimentation tank, the backflow mechanism comprises a backflow vertical pipe which is vertically arranged, a backflow transverse pipe which is connected with the top of the backflow vertical pipe and transversely penetrates through the aerobic tank, the backflow vertical pipe is connected with the outlet of the vortex fan, the backflow transverse pipe is provided with a backflow outlet pipe used for communicating the backflow transverse pipe with the aerobic tank, the right end of the backflow transverse pipe is led into the, the invention has simple structure, convenient use, good disinfection effect and high working efficiency.

Description

Sewage treatment device

Technical Field

The invention relates to the technical field of sewage treatment equipment, in particular to a sewage treatment device.

Background

At present, municipal domestic sewage is usually treated by a sewage treatment plant, and according to data published by the national environmental protection department, the treatment rate of the municipal sewage is 90.2% by the end of 2014, namely, a huge gap of about 10% still exists. While rural settlement domestic sewage is difficult to treat due to regional dispersion, large population, difficult collection and the like, survey reports of the ministry of domestic and construction show that 96% of villages do not have drainage channels and sewage treatment systems, and have a great gap compared with the sewage treatment prevalence rate of 86.9% in japan, and various sewage treatment facilities have been developed in order to narrow the gap. However, the existing sewage treatment device has a poor sewage disinfection effect, and a sludge reflux pump is installed at the bottom of the sedimentation tank, and the pump plays a role in conveying sludge subjected to sedimentation and separation to an aerobic section and an anaerobic section, plays roles in enhancing a contact surface and nitrification and denitrification, and effectively ensures the stability of denitrification and the stability of an aerobic operation load, but the reflux pump consumes electric energy, so that the cost of sewage treatment is increased.

Disclosure of Invention

The invention aims to overcome the defects in the prior art and provides the sewage treatment device which is simple in structure, convenient to use, cost-saving, good in disinfection effect and high in working efficiency.

The invention is realized by the following technical scheme: a sewage treatment device comprises a machine room, an anaerobic tank, an aerobic tank and a sedimentation tank which are sequentially arranged from left to right, wherein a water inlet is arranged on the anaerobic tank, a water outlet is arranged on the sedimentation tank, the anaerobic tank and the aerobic tank as well as the aerobic tank and the sedimentation tank are communicated through a flow guide pipe, an ozone machine used for conveying ozone gas into the aerobic tank is arranged in the machine room, an aeration mechanism is arranged in the aerobic tank and comprises a plurality of aerators, a vortex fan connected with the aerators is arranged in the machine room, a stirring pump is arranged in the anaerobic tank, a backflow mechanism used for conveying sludge in the sedimentation tank into the aerobic tank and the anaerobic tank is arranged in the sedimentation tank, the backflow mechanism comprises a backflow vertical pipe which is vertically arranged and a backflow transverse pipe which is connected with the top of the backflow vertical pipe and transversely penetrates through the aerobic tank, the backflow vertical pipe is connected with an outlet of the vortex fan, a backflow outlet pipe used for enabling the backflow transverse pipe to be communicated with the aerobic tank is arranged on the backflow transverse pipe, the right end of the backflow transverse pipe is communicated into the anaerobic tank, porous suspension fillers are arranged in the aerobic tank and the anaerobic tank, and a controller electrically connected with the stirring pump is arranged in the machine room.

Preferably, the honeycomb duct is including being used for communicateing the first honeycomb duct in anaerobism pond and good oxygen pond, being used for communicateing the second honeycomb duct in good oxygen pond and sedimentation tank, the bottom of second honeycomb duct is equipped with the stabilizer.

Preferably, the outlet of the ozone machine is connected with an ozone pipe, the ozone pipe is communicated into the aerobic pool, and the ozone pipe is communicated with the first flow guide pipe.

Preferably, the inclined bucket plate is obliquely arranged in the sedimentation tank, the right end of the inclined bucket plate is higher than the left end, the right end of the inclined bucket plate is connected with the right side face of the sedimentation tank, and the left end of the inclined bucket plate is connected with the bottom of the sedimentation tank.

Preferably, the distance between the vertical return pipe and the left side surface of the sedimentation tank is 40-60mm, the distance between the bottom of the vertical return pipe and the bottom of the sedimentation tank is 90-110mm, and the distance between the left end of the inclined hopper plate and the left side surface of the sedimentation tank is 90-110 mm.

Preferably, the outlet of the stirring pump is provided with a guide pipe, and the other end of the guide pipe faces downwards.

Preferably, an outlet of the vortex fan is provided with an aerator pipe, the aerator pipe comprises an aeration vertical pipe connected with the outlet of the vortex fan, and an aeration horizontal pipe connected with the top of the aeration vertical pipe and penetrating through the anaerobic tank along the horizontal direction, the left end of the aeration horizontal pipe is connected with a power air pipe through a reducing joint, the inner diameter of the power air pipe is smaller than that of the aeration horizontal pipe, the other end of the power air pipe is connected with the return vertical pipe, and the aeration horizontal pipe is connected with the aerator through an aeration connecting pipe.

Preferably, valves are arranged on the power air pipe, the aeration connecting pipe and the transverse reflux pipe.

The invention has the beneficial effects that: the invention has simple structure and convenient use, is provided with the backflow mechanism, conveys the sludge in the sedimentation tank to the aerobic tank and the anaerobic tank, plays roles of enhancing the contact surface and nitrification and denitrification, and effectively ensures the stability of denitrification and the stability of aerobic operation load; the ozone machine and the aerator are arranged, and the aerator diffuses the ozone gas generated by the ozone machine in a large area in the water in the aerobic tank, so that the disinfection effect is effectively ensured; the outlet of the stirring pump is provided with a guide pipe, and the other end of the guide pipe faces downwards, so that the internal circulation function of the aerobic tank is prevented from being weakened due to a large amount of siltation caused by sludge backflow in the anaerobic tank; porous suspension filler is arranged as a flora carrier, and the filler has the effects of large surface area load, good flow circulation and effective stabilization of the flora quantity; the sewage enters the anaerobic tank from the water inlet, sequentially flows into the aerobic tank and the sedimentation tank, and then flows out from the water outlet, so that the treatment process is coherent, efficient and smooth, and the working efficiency is high.

Drawings

FIG. 1 is a schematic view of the present invention;

FIG. 2 is a cross-sectional view taken along the line A-A;

wherein: the machine room 1, the anaerobism pond 2, good oxygen pond 3, the sedimentation tank 4, the controller 5, ozone pipe 6, ozone machine 7, swirl fan 8, aeration standpipe 9, horizontal aeration pipe 10, aeration regulating valve 11, connecting pipe 12, aerator 13, reducing joint 14, pneumatic adjusting ball valve 15, power horizontal air pipe 16, power vertical air pipe 17, backward flow standpipe 18, horizontal backward flow pipe 19, backward flow outlet pipe 20, backward flow regulating valve 21, inlet tube 22, first honeycomb duct 23, horizontal pipe 24 of second water conservancy diversion, second water conservancy diversion standpipe 25, the steady flow board 26, the tipping plate 27, the agitator pump 28, stand pipe 29, water inlet 30, delivery port 31.

Detailed Description

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example 1

As shown in fig. 1-2, a sewage treatment device comprises a machine room 1, an anaerobic tank 2, an aerobic tank 3 and a sedimentation tank 4 which are sequentially arranged from left to right, wherein the anaerobic tank 2 is provided with a water inlet 30, the water inlet 30 is positioned above the rear side wall of the anaerobic tank 2, the anaerobic tank 2 is internally provided with a water inlet pipe 22 connected with the water inlet 30, the water inlet pipe 22 is arranged along the vertical direction, and the outlet end of the water inlet pipe 22 is positioned below the water inlet 30. The anaerobic tank 2 and the aerobic tank 3 and the sedimentation tank 4 are communicated through flow guide pipes, and the flow guide pipes comprise a first flow guide pipe 23 for communicating the anaerobic tank 2 with the aerobic tank 3 and a second flow guide pipe for communicating the aerobic tank 3 with the sedimentation tank 4. The second honeycomb duct includes horizontal installation's the second water conservancy diversion violently manages 24, with the second water conservancy diversion standpipe 25 that the left end of the second water conservancy diversion violently manages 24 is connected, and the bottom of second water conservancy diversion standpipe 25 is connected with the stabilizer 26, and the slope of stabilizer 26 sets up, and the lower open diameter that the stabilizer 26 encloses and forms is greater than the internal diameter of second honeycomb duct. An ozone machine 7 used for conveying ozone into the aerobic pool 3 is installed in the machine room 1, an outlet of the ozone machine 7 is connected with an ozone pipe 6, the ozone pipe 6 is communicated into the aerobic pool 3, and the ozone pipe 6 is communicated with a first flow guide pipe 23. An aeration mechanism is arranged in the aerobic tank 3, and the aeration mechanism comprises four aerators 13 which are uniformly distributed at the bottom in the aerobic tank 3. Install swirl fan 8 in the computer lab 1, the exit linkage aeration pipe of swirl fan 8, the aeration pipe includes the aeration standpipe 9 with the exit linkage of swirl fan 8, is connected and runs through the horizontal direction transversely directed aeration pipe 10 of anaerobism pond 2 with the top of aeration standpipe 9. The horizontal aerator pipe 10 is communicated with a connecting pipe 12, the connecting pipe 12 is arranged along the vertical direction, an aeration regulating valve 11 is arranged on the connecting pipe 12, and the bottom of the connecting pipe 12 is connected with four evenly-arranged aerators 13 through pipelines. The bottom of the aerator 13 is provided with a mounting base. Ozone gas generated by the ozone machine 7 enters the aerobic tank 3 through the ozone pipe 6 and water in the first flow guide pipe 23, the vortex fan 8 works, the aerator 13 works to diffuse the ozone gas in a large area in the water in the aerobic tank 3, and the disinfection effect is effectively ensured.

The bottom in the anaerobic tank 2 is provided with a stirring pump 28, the outlet of the stirring pump 28 is connected with a guide pipe 29, and the other end of the guide pipe 29 faces downwards, so that the internal circulation function of the aerobic tank 3 is prevented from being weakened due to the fact that a large amount of sludge is deposited in the anaerobic tank 2 due to the backflow of sludge. The sedimentation tank 4 is internally provided with a backflow mechanism for conveying sludge in the sedimentation tank 4 into the aerobic tank 3 and the anaerobic tank 2, so that the contact surface is enhanced, the nitrification and denitrification effects are achieved, and the stability of denitrification and the stability of aerobic operation load are effectively ensured. The reflux mechanism comprises a vertical reflux vertical pipe 18 and a horizontal reflux pipe 19 which is connected with the top of the reflux vertical pipe 18 and transversely penetrates through the aerobic tank 3. Oblique fill board 27 of oblique installation in sedimentation tank 4, the right-hand member of fighting board 27 to one side is higher than the left end, and the right-hand member of fighting board 27 to one side is connected with sedimentation tank 4's right flank, and the left end of fighting board 27 to one side is connected with sedimentation tank 4's bottom. The distance between the vertical return pipe 18 and the left side surface of the sedimentation tank 4 is 50mm, the distance between the bottom of the vertical return pipe 18 and the bottom of the sedimentation tank 4 is 100mm, and the distance between the left end of the inclined bucket plate 27 and the left side surface of the sedimentation tank 4 is 100 mm. A return flow regulating valve 21 is mounted on the return cross pipe 19. The outlet at the right end of the transverse return pipe 19 is communicated with the anaerobic tank 2, the transverse return pipe 19 is connected with a return outlet pipe 20 for communicating the transverse return pipe 19 with the aerobic tank 3, and the return regulating valve 21 is positioned at the right side of the return outlet pipe 20. The opening at the left end of the horizontal aerator pipe 10 is connected with a power air pipe through a reducing joint 14, and the inner diameter of the power air pipe is smaller than that of the horizontal aerator pipe 10. The power air pipe comprises a power transverse air pipe 16 which is connected with the left end of the reducing joint 14 and is installed along the horizontal direction, and a power vertical air pipe 17 which is connected with the left end of the power transverse air pipe 16 and is installed along the vertical direction, a pneumatic adjusting ball valve 15 is installed on the power transverse air pipe 16, and the bottom of the power vertical air pipe 17 is bent towards the left side and is communicated with a backflow vertical pipe 18. Sewage is accumulated on the left side of the inclined hopper plate 27 in the sedimentation tank 4, accumulated sludge submerges the bottom of the return vertical pipe 18, sludge in the return vertical pipe 18 rises along with the increase of the accumulation height of external sludge, meanwhile, after the air blown by the vortex fan 8 passes through the reducing joint 14, the air enters the power horizontal air pipe 16 from the horizontal aeration pipe 10, the air pressure is increased, the air enters the return vertical pipe 18 through the power vertical air pipe 17, since the bottom of the return stack 18 is filled with sludge, gas can only travel up the return stack 18, when the sludge height exceeds the joint of the power vertical pipe 17 and the return vertical pipe 18, the sludge height in the return vertical pipe 18 also exceeds the joint, the gas blows the part of sludge upwards, the sludge intermittently enters the aerobic tank 3 and the anaerobic tank 2 along the return horizontal pipe 19, plays a role in enhancing the contact surface and nitrification and denitrification, and effectively ensures the stability of denitrification and the stability of aerobic operation load. And a reflux pump is not required, so that energy and cost are saved. The aerobic tank 3 and the anaerobic tank 2 are both provided with porous suspended fillers, also called porous rotary spherical suspended fillers, which are latest series products developed from various fillers adopted in domestic sewage treatment and biomembrane treatment technologies, and have full three-dimensional structures, large specific surface areas, direct feeding, no fixation, easy film formation and no blockage in the biochemical treatment of sewage. The filler series is formed by injection molding of polypropylene materials, and is divided into an inner layer sphere and an outer layer sphere, wherein the outer part of the inner layer sphere is a hollow fishnet-shaped sphere, and the inner part of the inner layer sphere is a rotary sphere. The biological membrane carrier has the functions of a biological membrane carrier, also has the function of intercepting suspended matters, has the characteristics of strong biological adhesive force, large specific surface area, high porosity, good chemical and biological stability, durability, no harmful substances dissolved out, no secondary pollution, ultraviolet resistance, ageing resistance, strong hydrophilic performance and the like, and is easy to generate, easy to replace, resistant to acid and alkali, ageing resistant, free from water flow influence, long in service life, less in residual sludge and convenient to install in the using process. As a flora carrier, the filler has large surface area load and good flow circulation and can play a role in effectively stabilizing the number of flora. The porous suspension filler with a suitable type can be selected by a person skilled in the art according to actual conditions, and details are not repeated here. The machine room 1 is internally provided with a controller 5 which is electrically connected with the stirring pump 28. The front side wall of the sedimentation tank 4 is provided with a water outlet 31, the treated water flows out from the water outlet 31, the whole sewage treatment process is coherent, efficient and smooth, and the working efficiency is high.

Example 2

The bottom in the anaerobic tank 2 is provided with a stirring pump 28, the outlet of the stirring pump 28 is connected with a guide pipe 29, and the other end of the guide pipe 29 faces downwards, so that the internal circulation function of the aerobic tank 3 is prevented from being weakened due to the fact that a large amount of sludge is deposited in the anaerobic tank 2 due to the backflow of sludge. The sedimentation tank 4 is internally provided with a backflow mechanism for conveying sludge in the sedimentation tank 4 into the aerobic tank 3 and the anaerobic tank 2, so that the contact surface is enhanced, the nitrification and denitrification effects are achieved, and the stability of denitrification and the stability of aerobic operation load are effectively ensured. The reflux mechanism comprises a vertical reflux vertical pipe 18 and a horizontal reflux pipe 19 which is connected with the top of the reflux vertical pipe 18 and transversely penetrates through the aerobic tank 3. Oblique fill board 27 of oblique installation in sedimentation tank 4, the right-hand member of fighting board 27 to one side is higher than the left end, and the right-hand member of fighting board 27 to one side is connected with sedimentation tank 4's right flank, and the left end of fighting board 27 to one side is connected with sedimentation tank 4's bottom. The distance between the vertical return pipe 18 and the left side surface of the sedimentation tank 4 is 40mm, the distance between the bottom of the vertical return pipe 18 and the bottom of the sedimentation tank 4 is 90mm, and the distance between the left end of the inclined bucket plate 27 and the left side surface of the sedimentation tank 4 is 90 mm. A return flow regulating valve 21 is mounted on the return cross pipe 19. The outlet at the right end of the transverse return pipe 19 is communicated with the anaerobic tank 2, the transverse return pipe 19 is connected with a return outlet pipe 20 for communicating the transverse return pipe 19 with the aerobic tank 3, and the return regulating valve 21 is positioned at the right side of the return outlet pipe 20. The opening at the left end of the horizontal aerator pipe 10 is connected with a power air pipe through a reducing joint 14, and the inner diameter of the power air pipe is smaller than that of the horizontal aerator pipe 10. The power air pipe comprises a power transverse air pipe 16 which is connected with the left end of the reducing joint 14 and is installed along the horizontal direction, and a power vertical air pipe 17 which is connected with the left end of the power transverse air pipe 16 and is installed along the vertical direction, a pneumatic adjusting ball valve 15 is installed on the power transverse air pipe 16, and the bottom of the power vertical air pipe 17 is bent towards the left side and is communicated with a backflow vertical pipe 18. Porous suspension fillers are filled in the aerobic tank 3 and the anaerobic tank 2 and are used as flora carriers, and the fillers have the advantages of large surface area load, good flow circulation and effective stabilization of the flora quantity. The machine room 1 is internally provided with a controller 5 which is electrically connected with the stirring pump 28. The front side wall of the sedimentation tank 4 is provided with a water outlet 31, the treated water flows out from the water outlet 31, the whole sewage treatment process is coherent, efficient and smooth, and the working efficiency is high.

Example 3

The bottom in the anaerobic tank 2 is provided with a stirring pump 28, the outlet of the stirring pump 28 is connected with a guide pipe 29, and the other end of the guide pipe 29 faces downwards, so that the internal circulation function of the aerobic tank 3 is prevented from being weakened due to the fact that a large amount of sludge is deposited in the anaerobic tank 2 due to the backflow of sludge. The sedimentation tank 4 is internally provided with a backflow mechanism for conveying sludge in the sedimentation tank 4 into the aerobic tank 3 and the anaerobic tank 2, so that the contact surface is enhanced, the nitrification and denitrification effects are achieved, and the stability of denitrification and the stability of aerobic operation load are effectively ensured. The reflux mechanism comprises a vertical reflux vertical pipe 18 and a horizontal reflux pipe 19 which is connected with the top of the reflux vertical pipe 18 and transversely penetrates through the aerobic tank 3. Oblique fill board 27 of oblique installation in sedimentation tank 4, the right-hand member of fighting board 27 to one side is higher than the left end, and the right-hand member of fighting board 27 to one side is connected with sedimentation tank 4's right flank, and the left end of fighting board 27 to one side is connected with sedimentation tank 4's bottom. The distance between the return vertical pipe 18 and the left side surface of the sedimentation tank 4 is 60mm, the distance between the bottom of the return vertical pipe 18 and the bottom of the sedimentation tank 4 is 110mm, and the distance between the left end of the inclined bucket plate 27 and the left side surface of the sedimentation tank 4 is 110 mm. A return flow regulating valve 21 is mounted on the return cross pipe 19. The outlet at the right end of the transverse return pipe 19 is communicated with the anaerobic tank 2, the transverse return pipe 19 is connected with a return outlet pipe 20 for communicating the transverse return pipe 19 with the aerobic tank 3, and the return regulating valve 21 is positioned at the right side of the return outlet pipe 20. The opening at the left end of the horizontal aerator pipe 10 is connected with a power air pipe through a reducing joint 14, and the inner diameter of the power air pipe is smaller than that of the horizontal aerator pipe 10. The power air pipe comprises a power transverse air pipe 16 which is connected with the left end of the reducing joint 14 and is installed along the horizontal direction, and a power vertical air pipe 17 which is connected with the left end of the power transverse air pipe 16 and is installed along the vertical direction, a pneumatic adjusting ball valve 15 is installed on the power transverse air pipe 16, and the bottom of the power vertical air pipe 17 is bent towards the left side and is communicated with a backflow vertical pipe 18. Porous suspension fillers are filled in the aerobic tank 3 and the anaerobic tank 2 and are used as flora carriers, and the fillers have the advantages of large surface area load, good flow circulation and effective stabilization of the flora quantity. The machine room 1 is internally provided with a controller 5 which is electrically connected with the stirring pump 28. The front side wall of the sedimentation tank 4 is provided with a water outlet 31, the treated water flows out from the water outlet 31, the whole sewage treatment process is coherent, efficient and smooth, and the working efficiency is high.

During normal work, sewage gets into the anaerobism pond 2 through water inlet 30 inlet tube 22, the work of controller 5 control script pump, prevent that 2 insides in the anaerobism pond from causing a large amount of silts because of the mud backward flow and make the internal circulation function in good oxygen pond 3 weaken, sewage in the anaerobism pond 2 gets into good oxygen pond 3 through first honeycomb duct 23, meanwhile, ozone machine 7 works, ozone gas that ozone machine 7 produced gets into good oxygen pond 3 jointly through ozone pipe 6 and the sewage in the first honeycomb duct 23 in, swirl fan 8 works, four aerators 13 of evenly installing in good oxygen pond 3 bottom are with ozone gas large tracts of land diffusion in the aquatic in good oxygen pond 3, the disinfection effect has effectively been guaranteed. The sewage in the aerobic tank 3 enters the sedimentation tank 4 through the second flow guide pipe, and the flow stabilizing plate 26 has the flow stabilizing effect. Sewage is accumulated on the left side of the inclined hopper plate 27 in the sedimentation tank 4, accumulated sludge submerges the bottom of the return vertical pipe 18, sludge in the return vertical pipe 18 rises along with the increase of the accumulation height of external sludge, meanwhile, after the air blown by the vortex fan 8 passes through the reducing joint 14, the air enters the power horizontal air pipe 16 from the horizontal aeration pipe 10, the air pressure is increased, the air enters the return vertical pipe 18 through the power vertical air pipe 17, since the bottom of the return stack 18 is filled with sludge, gas can only travel up the return stack 18, when the sludge height exceeds the joint of the power vertical pipe 17 and the return vertical pipe 18, the sludge height in the return vertical pipe 18 also exceeds the joint, the gas blows the part of sludge upwards, the sludge intermittently enters the aerobic tank 3 and the anaerobic tank 2 along the return horizontal pipe 19, plays a role in enhancing the contact surface and nitrification and denitrification, and effectively ensures the stability of denitrification and the stability of aerobic operation load. And a reflux pump is not required, so that energy and cost are saved. The treated sewage is discharged from the water outlet 31, and the whole sewage treatment process is coherent, efficient, smooth and high in working efficiency.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.

Claims

1. A sewage treatment ware which characterized in that: comprises a machine room, an anaerobic tank, an aerobic tank and a sedimentation tank which are sequentially arranged from left to right, wherein the anaerobic tank is provided with a water inlet, the sedimentation tank is provided with a water outlet, the anaerobic tank is communicated with the aerobic tank and the aerobic tank are communicated with the sedimentation tank through a flow guide pipe, an ozone machine for conveying ozone gas into the aerobic tank is arranged in the machine room, the aerobic tank is internally provided with an aeration mechanism, the aeration mechanism comprises a plurality of aerators, the machine room is internally provided with a vortex fan connected with the aerators, the anaerobic tank is internally provided with a stirring pump, the sedimentation tank is internally provided with a backflow mechanism for conveying sludge in the sedimentation tank into the aerobic tank and the anaerobic tank, the backflow mechanism comprises a vertical pipe backflow which is vertically arranged, and a backflow transverse pipe which is connected with the top of the backflow vertical pipe and transversely penetrates through the aerobic tank, the backflow vertical pipe is connected with an outlet of the vortex fan, a backflow outlet pipe used for enabling the backflow transverse pipe to be communicated with the aerobic tank is arranged on the backflow transverse pipe, the right end of the backflow transverse pipe is communicated into the anaerobic tank, porous suspension fillers are arranged in the aerobic tank and the anaerobic tank, and a controller electrically connected with the stirring pump is arranged in the machine room.

2. A wastewater treatment plant according to claim 1, characterized in that: the honeycomb duct is including being used for the intercommunication anaerobism pond and the first honeycomb duct in good oxygen pond, be used for the intercommunication the second honeycomb duct in good oxygen pond and sedimentation tank, the bottom of second honeycomb duct is equipped with the stabilizer.

3. A wastewater treatment plant according to claim 2, characterized in that: the outlet of the ozone machine is connected with an ozone pipe, the ozone pipe is communicated into the aerobic pool, and the ozone pipe is communicated with the first flow guide pipe.

4. A wastewater treatment plant according to claim 1, characterized in that: the inclined bucket plate is obliquely arranged in the sedimentation tank, the right end of the inclined bucket plate is higher than the left end of the sedimentation tank, the right end of the inclined bucket plate is connected with the right side face of the sedimentation tank, and the left end of the inclined bucket plate is connected with the bottom of the sedimentation tank.

5. A sewage treatment plant according to claim 4, wherein: the distance between the return vertical pipe and the left side face of the sedimentation tank is 40-60mm, the distance between the bottom of the return vertical pipe and the bottom of the sedimentation tank is 90-110mm, and the distance between the left end of the inclined hopper plate and the left side face of the sedimentation tank is 90-110 mm.

6. A wastewater treatment plant according to claim 1, characterized in that: the outlet of the stirring pump is provided with a guide pipe, and the other end of the guide pipe faces downwards.

7. A wastewater treatment plant according to claim 1, characterized in that: the outlet of the vortex fan is provided with an aeration pipe, the aeration pipe comprises an aeration vertical pipe connected with the outlet of the vortex fan, and an aeration horizontal pipe which is connected with the top of the aeration vertical pipe and penetrates through the anaerobic tank along the horizontal direction, the left end of the aeration horizontal pipe is connected with a power air pipe through a reducing joint, the inner diameter of the power air pipe is smaller than that of the aeration horizontal pipe, the other end of the power air pipe is connected with the reflux vertical pipe, and the aeration horizontal pipe is connected with the aerator through an aeration connecting pipe.

8. A wastewater treatment plant according to claim 7, characterized in that: and valves are arranged on the power air pipe, the aeration connecting pipe and the transverse reflux pipe.