CN220098743U

CN220098743U - SBBR sewage treatment plant of high-efficient denitrogenation

Info

Publication number: CN220098743U
Application number: CN202321534706.7U
Authority: CN
Inventors: 范永杰; 李静怡; 刘文义
Original assignee: Ningxia Yuanwei Environmental Protection Technology Co ltd
Current assignee: Ningxia Yuanwei Environmental Protection Technology Co ltd
Priority date: 2023-06-15
Filing date: 2023-06-15
Publication date: 2023-11-28
Anticipated expiration: 2033-06-15

Abstract

The utility model discloses an SBBR sewage treatment device for high-efficiency denitrification, belongs to the technical field of sewage treatment, and solves the problem that sewage in the existing SBBR reaction tank cannot flow circularly to cause endogenous denitrification reaction; the sewage treatment device comprises an SBBR reaction tank communicated with a sewage component; the SBBR reaction tank comprises a reaction tank body, wherein a baffle plate is arranged in the middle of the reaction tank body, a plurality of biological filler frames uniformly distributed on two sides of the baffle plate are arranged in the reaction tank body, an aeration disc is arranged at the bottom of each biological filler frame, and a stripping component is arranged on one side, close to the reaction tank body, of the baffle plate. According to the utility model, a part of air quantity of the aeration fan is utilized, and the air stripping component and the partition plate are utilized to fully contact pollutants in water with microorganisms attached to the biological filler frame while energy consumption and carbon source addition are not increased, and endogenous denitrification is utilized to efficiently denitrify, so that the total nitrogen in the effluent can reach the standard stably without adding or only adding a small amount of carbon source.

Description

SBBR sewage treatment plant of high-efficient denitrogenation

Technical Field

The utility model relates to the technical field of sewage treatment, in particular to an SBBR sewage treatment device for high-efficiency denitrification.

Background

SBBR is a short name of sequencing batch biofilm reaction tank (Sequencing Biofilm Batch Reactor), also called membrane method SBR (BABR), and is a new sewage biological treatment technology which is being researched and applied at home and abroad. The SBBR sewage treatment process comprises the following steps: SBBR is a novel composite biological film reaction tank developed by filling different fillers (such as fibrous fillers, active carbon, ceramsite and the like) in an SBR reaction tank, and the intervention of the fillers provides a more favorable living environment for microorganisms. The microorganism forms a complex ecological system which is composed of a plurality of nutrition levels of bacteria, fungi, algae, protozoa, metazoan and the like in the longitudinal direction, and forms a suspended aerobic type, an attached facultative type and an attached anaerobic type microorganism system with a plurality of different activity capacities, breathing types and nutrition types in the transverse direction along the direction of water flowing to the carrier, thereby greatly improving the processing capacity and the stability of the reaction tank.

For rural sewage treatment, the effluent quality reaches the first-level A standard, and the total nitrogen requirement is high, so that the denitrification requirement for the SBBR reaction tank is higher under the condition. In order to solve the problem of high denitrification requirement in rural sewage treatment, the prior SBBR technology adopts a mode of increasing biochemical treatment time, increasing hydraulic retention time, simultaneously adding additional carbon source and high denitrification cost.

In the prior SBBR reaction tank, sewage flows through the vertically arranged stirrer, so that the sewage is in transverse contact with the biological filler frame, but the vertically arranged stirrer has high energy consumption, and the sewage can only flow in a vortex shape. Sewage cannot circulate in the SBBR reaction tank and sufficiently contact with the biological filler frame in the transverse and longitudinal directions, so that the activity of the biological filler cannot be fully utilized to perform endogenous denitrification, and the denitrification effect is reduced.

Disclosure of Invention

Aiming at the problems in the prior art, the utility model provides an SBBR sewage treatment device for high-efficiency denitrification, which solves the problem that sewage in the existing SBBR reaction tank cannot flow circularly to cause endogenous denitrification reaction.

In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:

an SBBR sewage treatment device with high-efficiency denitrification is provided, which comprises an SBBR reaction tank communicated with a sewage component; the SBBR reaction tank comprises a reaction tank body, wherein a baffle plate is arranged in the middle of the reaction tank body, one side of the baffle plate is arranged on the side wall of the reaction tank body, and a certain distance is reserved between the other side of the baffle plate and the opposite side wall of the reaction tank body; a plurality of biological filling frames uniformly distributed on two sides of the partition plate are arranged in the reaction tank body, an aeration disc is arranged at the bottom of each biological filling frame, a gas stripping assembly is arranged on one side, close to the reaction tank body, of the partition plate, and the gas stripping assembly and the aeration discs are communicated with an aeration fan.

In this scheme, the air stripping subassembly utilizes the wind-force of aeration fan to mention the sewage in the reaction tank cell body, make the sewage longitudinal flow in the reaction tank, and cross-plane annular flow in the reaction tank cell body through baffle sewage, sewage longitudinal flow and annular flow form the sewage of circulation flow, sewage circulation flow can make pollutant and biological filler frame on the microorganism attached fully contact, the activity of denitrifying bacteria on the make full use of biological filler, thereby can utilize endogenous denitrification to improve the denitrification effect, under the condition that need not to throw or only need add a small amount of carbon sources, make the total nitrogen of play water stable up to standard.

Further, the air stripping component comprises a lifting pipe fixed on the partition board, one end of the lifting pipe is arranged on one side of the partition board, and the other end of the lifting pipe is communicated with a first air pressure shell positioned on the other side of the partition board; the air inlet pipe communicated with the aeration fan is arranged on the first air pressure shell, a Tesla pipe is fixed in the first air pressure shell, one end of the Tesla pipe penetrates through the end face of the first air pressure shell and is communicated with the lifting pipe, the other end of the Tesla pipe is communicated with the connecting pipe, the second air pressure shell is sleeved on the connecting pipe, and two vent holes are symmetrically formed in the bottom of the connecting pipe, which is close to the second air pressure shell.

In this scheme, adopt the air vent on first pneumatic shell, second pneumatic shell and the connecting pipe can produce pulsed big bubble in tesla pipe, and through tesla pipe unidirectional flow's characteristic to sewage steadily quick in the riser rises under the pressure differential effect, compares in traditional air stripping device, and pulsed big bubble can improve the lifting force of sewage, and the lifting rate of sewage is higher.

Further, the lifting pipe is of an inverted L-shaped structure, one end of the lifting pipe passes through the partition plate and is bent and extended into the reaction tank body, a blocking nozzle is arranged in the vertical pipe at the other end of the lifting pipe, a blocking ball in sealing fit with the blocking nozzle is arranged on the blocking nozzle, and the blocking ball is connected with the blocking nozzle through a connecting wire; by adopting the blocking ball and the blocking nozzle, when the sewage liquid level of the reaction tank body is lower than that of the first air pressure shell, the blocking ball loses buoyancy to drop and block the blocking nozzle as no sewage exists in the lifting pipe, so that the lifting pipe is closed, and the aeration fan can automatically close the wind power flowing into the lifting pipe.

Further, the first air pressure shell comprises a hollow cylinder, through holes are formed in two ends of the hollow cylinder, the through holes in the upper end of the hollow cylinder are communicated with the Tesla tube, and a baffle is arranged at the position of the through holes in the lower end of the hollow cylinder; by utilizing the characteristic of unidirectional conduction of the Tesla tube, the sewage can be prevented from flowing back in the pulse bubble lifting process, and the lifting process of the sewage is stabilized; through the baffle, can be when the sewage liquid level of reaction tank cell body is less than first air pressure shell, thereby the baffle loses buoyancy sealed first air pressure shell to with stifled ball cooperation makes aeration fan can the self-closing wind-force of letting in the riser.

Further, the second air pressure shell is in a hollow round platform structure with the large-diameter end upwards, the second air pressure shell is positioned in the first air pressure shell, and the second air pressure shell is fixed on the connecting pipe through a sleeve hole in the middle of the bottom surface of the second air pressure shell; the second air pressure shell adopts a hollow round table to form an inner air cavity, and is in air pressure fit with an outer air cavity formed by the first air pressure shell.

Further, the aeration discs are sequentially communicated through an air pipe, and one of the aeration discs is communicated with an aeration fan; the aeration disc is adopted to facilitate the aeration fan to convey oxygen to the biological filler frame, so that an aerobic environment is formed.

Further, the sewage assembly comprises an adjusting tank, a sewage pump is arranged in the adjusting tank, and the sewage pump is communicated with a water inlet at the bottom of the tank body of the reaction tank through a water pipe; by arranging the water inlet at the bottom of the reaction tank body, when the sewage pump conveys sewage to the reaction tank body, the sewage is prevented from directly impacting the biological filling frame under the drive of the sewage pump.

The utility model discloses an SBBR sewage treatment device for high-efficiency denitrification, which has the beneficial effects that:

according to the utility model, the SBBR reaction tank is divided into two parts, and a part of air quantity of the aeration fan and the stripping device are recycled, so that water at the tail end of the SBBR reaction tank is returned to the front section without adding a return pump, the fluidity of sewage in the reaction tank is increased, pollutants in the water are fully contacted with denitrifying microorganisms attached to the biological filler frame, the denitrifying bacteria can efficiently denitrify by utilizing the endogenous denitrification reaction, and therefore, the total nitrogen of the effluent can reach the standard stably without adding a carbon source into the SBBR reaction tank or adding a small amount of carbon source, and the denitrification cost is reduced.

Drawings

FIG. 1 is a schematic diagram of a structure of an SBBR sewage treatment plant for efficient denitrification;

FIG. 2 is a schematic diagram of the front view structure of an SBBR reaction cell;

FIG. 3 is a schematic side view of the SBBR reaction cell;

FIG. 4 is a schematic view of the structure of the stripping assembly;

FIG. 5 is a schematic view of the structure of the first pneumatic housing;

FIG. 6 is a schematic view of a riser configuration;

wherein: 1. an SBBR reaction tank; 2. a sewage assembly; 3. an aeration fan; 4. a stripping assembly; 5. air bubbles; 11. a reaction tank body; 12. a biological filler frame; 13. an aeration disc; 14. a partition plate; 15. a water inlet; 41. a first air pressure housing; 42. a second air pressure housing; 43. a connecting pipe; 44. tesla tube; 45. a riser; 46. an air inlet pipe; 411. a baffle; 421. a vent hole; 451. blocking balls; 452. and (5) plugging the mouth.

Detailed Description

The following description of the embodiments of the present utility model is provided to facilitate understanding of the present utility model by those skilled in the art, but it should be understood that the present utility model is not limited to the scope of the embodiments, and all the utility models which make use of the inventive concept are protected by the spirit and scope of the present utility model as defined and defined in the appended claims to those skilled in the art.

Example 1

The present embodiment provides an SBBR sewage treatment apparatus for efficient denitrification, which aims to solve the problem that sewage in the existing SBBR reaction tank cannot flow circularly to cause endogenous denitrification reaction, and is shown in detail below.

Referring to fig. 1, an SBBR sewage treatment apparatus for efficient denitrification according to the present embodiment includes an SBBR reaction tank 1, a sewage assembly 2, an aeration fan 3, and a stripping assembly 4.

The SBBR reaction tank 1 is communicated with the sewage component 2 and is used for carrying out denitrification by endogenous denitrification reaction.

Referring to fig. 2, the sbbr reaction tank 1 includes a reaction tank body 11, a partition 14 is provided in the middle of the reaction tank body 11, a plurality of bio-filler frames 12 are installed in the reaction tank body 11, and the plurality of bio-filler frames 12 are uniformly distributed on both sides of the partition 14.

Each biological filler frame 12 is provided with a certain amount of combined filler; the sewage flows through aeration, so that the sewage can be further fully contacted and reacted with microorganisms on the filler. The combined filler comprises, but is not limited to, fibrous filler, activated carbon and ceramsite, and the intervention of the combined filler provides a more favorable living environment for microorganisms. The biological stuffing frame 12 longitudinally forms a complex ecological system consisting of a plurality of nutrition levels of bacteria, fungi, algae, protozoa, metazoan and the like; the microorganism system with various different activity capacities, respiration types and nutrition types, such as a suspended aerobic type, an attached facultative type and an attached anaerobic type, is formed along the direction of water flowing to the carrier in the transverse direction, and the treatment capacity and the stability of denitrification reaction treatment are improved.

The bottom of each biological stuffing frame 12 is provided with an aeration disc 13. The aeration discs 13 are sequentially communicated through air pipes, and one of the aeration discs 13 is communicated with the aeration fan 3; the aeration disc 13 is adopted to facilitate the aeration fan 3 to convey oxygen to the biological filling frame 12, thus forming an aerobic environment.

The air stripping component 4 is arranged on one side of the baffle 14, which is close to the reaction tank body 11, and the air stripping component 4 is communicated with the aeration fan 3 and is used for extracting sewage.

One side of the baffle plate 14 is welded on the side wall of the reaction tank body 11, and the other side of the baffle plate 14 is 50 cm-70 cm away from the opposite side wall of the reaction tank body 11; the partition 14 is designed so that the sewage flows in the circumferential direction in the lateral surface of the reaction tank body 11.

In this embodiment, referring to fig. 3, the air stripping assembly 4 extracts and lifts the sewage in the reaction tank body 11 by using the wind force of the aeration fan 3, so that the sewage longitudinally flows, and the sewage circularly flows in the cross surface of the reaction tank body 11 through the partition plate 14, the sewage longitudinally flows and the circular flows form circularly flowing sewage, and the sewage circularly flows to enable pollutants in the sewage to fully contact with microorganisms attached to the biological filler frame 12, so that the activity of the biological filler is fully utilized, and the denitrification effect can be improved by utilizing endogenous denitrification, and the total nitrogen of the effluent can reach the standard stably under the condition that no or only a small amount of carbon source is required to be added.

As a further scheme of the embodiment, the sewage assembly 2 comprises an adjusting tank, a sewage pump is arranged in the adjusting tank, and the sewage pump is communicated with a water inlet 15 at the bottom of the reaction tank body 11 through a water pipe; by arranging the water inlet 15 at the bottom of the reaction tank body 11, when the sewage pump conveys sewage to the reaction tank body 11, the sewage is prevented from directly impacting the biological stuffing frame 12 under the driving of the sewage pump.

In this embodiment, all install liquid level sensor on equalizing basin and the reaction tank cell body 11, still install PH sensor, mud concentration sensor and PLC on the reaction tank cell body 11, PLC is connected with aeration fan 3, sewage pump, two liquid level sensor, PH sensor and mud concentration sensor electricity respectively.

The PLC of this example is a conventional PLC of the art, the liquid level sensor is model guy, the PH sensor is model RK-PH-2, and the sludge concentration sensor is model PZ-9335S.

The working principle of the embodiment is as follows:

the SBBR sewage treatment device operates according to the period, 4 periods/day, and one period is formed every 6 hours on average. The water inflow, aeration and circulation flow are carried out simultaneously in each period, the start and stop of the sewage pump in each period are controlled by the PLC according to the liquid level of the reaction tank body 11, the pump is started in low liquid level, the pump is stopped in high liquid level, the water inflow time of the sewage pump is about 30 minutes each time, the anaerobic time of the biochemical section of the SBBR reaction tank 1 is 1.0 hour, the aeration and circulation flow time is determined by the PLC by utilizing the PH sensor to collect PH in real time, and the standing time is determined by the PLC by utilizing the sludge concentration sensor to collect the sludge concentration value in real time.

The specific process is as follows:

starting a sewage pump, enabling sewage in the regulating tank to enter the bottom of the reaction tank body 11 through the water inlet 15 under the drive of the sewage pump, detecting that the liquid level of the sewage reaches a certain height by the liquid level sensor, and closing the sewage pump.

The aeration fan 3 is started while the sewage pump is started, the air quantity is respectively sent into the aeration disc 13 and the air stripping component 4 by the aeration fan 3, the air stripping component 4 extracts and lifts the sewage in the reaction tank body 11 by utilizing the wind power of the aeration fan 3, the sewage longitudinally flows, the sewage transversely flows in the reaction tank body 11 in a circumferential direction through the partition plate 14, the longitudinally flows and the circumferentially flows form circularly flowing sewage, the circularly flowing sewage can enable pollutants in the circularly flowing sewage to be fully contacted with microorganisms attached to the biological filler frame 12, and the activity of the biological filler is fully utilized, so that the denitrification effect can be improved by utilizing endogenous denitrification.

Closing the aeration fan 3, standing for a certain time, and opening a water outlet at the bottom of the reaction tank body 11 to discharge the denitrified sewage.

Example 2

This embodiment is further defined on the basis of embodiment 1, with the improvement of how the stripping assembly 4 is specifically arranged.

Referring to fig. 4, the stripping assembly 4 includes a first air pressure housing 41, a second air pressure housing 42, a connecting pipe 43, a tesla pipe 44, a riser pipe 45, and an air intake pipe 46.

The lifting pipe 45 is fixed on the partition plate 14, one end of the lifting pipe 45 is arranged on one side of the partition plate 14, and the other end of the lifting pipe 45 is communicated with the first air pressure shell 41 positioned on the other side of the partition plate 14;

referring to fig. 5, an air inlet pipe 46 communicated with the aeration fan 3 is arranged on the first air pressure shell 41, a tesla pipe 44 is fixed in the first air pressure shell 41, one end of the tesla pipe 44 passes through the end face of the first air pressure shell 41 and is communicated with a lifting pipe 45, the other end of the tesla pipe 44 is communicated with a connecting pipe 43, a second air pressure shell 42 is sleeved on the connecting pipe 43, and two vent holes 421 are symmetrically formed in the connecting pipe 43 near the bottom of the second air pressure shell 42.

In this embodiment, the first air pressure housing 41 forms an outer air chamber, the second air pressure housing 42 forms an inner air chamber, and when the aeration fan 3 does not introduce air into the air inlet pipe 46, the tesla pipe 44, the connection pipe 43, the outer air chamber and the inner air chamber are all filled with sewage.

The air inlet pipe 46 starts to inlet air, air extrudes and discharges sewage in the outer air chamber through a through hole at the lower end of the outer air chamber, and air extrudes and discharges sewage in the inner air chamber through two vent holes 421 on the connecting pipe 43;

the air inlet pipe 46 continues to be ventilated until the liquid level of the outer air chamber and the inner air chamber is lowered to the position of the vent hole 421 of the connecting pipe 43, air enters from the vent hole 421 of the connecting pipe 43 and breaks sewage in the connecting pipe 43 to form bubbles 5, the bubbles 5 gradually expand along with the air inlet of the air inlet pipe 46 and are sequentially discharged through the Tesla pipe 44 and the lifting pipe 45, and at the moment that the bubbles 5 are discharged through the lifting pipe 45, pressure difference is generated at two ends of the connecting pipe 43, the pressure difference drives the sewage to enter the connecting pipe 43 from the bottom of the connecting pipe 43 and then falls into the reaction tank body 11 from above the partition plate 14 through the Tesla pipe 44 and the lifting pipe 45; with this circulation, the pulsed bubbles 5 are continuously generated, so that the sewage is continuously lifted from the bottom of the reaction tank body 11 to above the partition plate 14.

The air vents 421 on the first air pressure shell 41, the second air pressure shell 42 and the connecting pipe 43 are adopted to generate pulse type large bubbles 5 in the tesla pipe 44, and the tesla pipe 44 can be matched with the pulse type large bubbles 5 through the unidirectional flow characteristic of the tesla pipe 44, so that sewage stably and rapidly rises in the lifting pipe 45 under the action of pressure difference, and compared with a traditional air stripping device, the pulse type large bubbles 5 can improve the lifting force of the sewage, and the lifting rate of the sewage is higher.

As a further scheme of this embodiment, referring to fig. 6, the lifting pipe 45 has an inverted L-shaped structure, one end of the lifting pipe 45 passes over the partition 14 and bends and extends into the reaction tank body 11, a blocking mouth 452 is installed in a vertical pipe at the other end of the lifting pipe 45, a blocking ball 451 in sealing fit with the blocking mouth 452 is arranged on the blocking mouth 452, and the blocking ball 451 is connected with the blocking mouth 452 through a connecting line; by adopting the blocking ball 451 and the blocking nozzle 452, when the sewage level of the reaction tank body 11 is lower than that of the first air pressure shell 41, the blocking ball 451 loses buoyancy to drop and block the blocking nozzle 452 because of no sewage in the lifting pipe 45, so that the lifting pipe 45 is closed, and the aeration fan 3 can automatically close the wind power flowing into the lifting pipe 45.

As a further scheme of the embodiment, the first air pressure shell 41 is a hollow cylinder, through holes are formed in two ends of the hollow cylinder, the through holes in the upper end of the hollow cylinder are communicated with the tesla tube 44, a baffle 411 and a filter screen are arranged at the position of the through holes in the lower end of the hollow cylinder, and the baffle 411 is rotationally connected with the hollow cylinder; by utilizing the characteristic of unidirectional conduction of the Tesla tube 44, the sewage can be prevented from flowing back in the process of lifting the pulse air bubbles 5, and the sewage lifting process is stabilized; through the baffle 411, when the sewage level of the reaction tank body 11 is lower than the first air pressure shell 41, the baffle 411 loses buoyancy so as to seal the first air pressure shell 41, and the baffle is matched with the blocking ball 451 so that the aeration fan 3 can automatically close the wind power flowing into the lifting pipe 45; the excessive impurities in the sewage can be filtered through the filter screen.

As a further scheme of the embodiment, the second air pressure shell 42 is in a hollow round platform structure with a large diameter end facing upwards, the second air pressure shell 42 is positioned in the first air pressure shell 41, and the second air pressure shell 42 is fixed on the connecting pipe 43 through a sleeve hole in the middle of the bottom surface of the second air pressure shell 42; the second air pressure housing 42 adopts a hollow round table to form an inner air cavity, and is in air pressure fit with an outer air cavity formed by the first air pressure housing 41.

As a further scheme of the embodiment, the diameter of the opening of the circular truncated cone of the second air pressure shell 42 is larger than the diameter of the bottom surface of the circular truncated cone; the conical arrangement facilitates the sinking of the sewage in the inner air cavity under the ventilation of the aeration fan 3, and facilitates the exposure of the ventilation holes 421 to form the pulse large bubbles 5.

The working principle of the embodiment is as follows:

the first air pressure shell 41 forms an outer air chamber, the second air pressure shell 42 forms an inner air chamber, and when the aeration fan 3 does not guide the air into the air inlet pipe 46, the tesla pipe 44, the connecting pipe 43, the outer air chamber and the inner air chamber are filled with sewage;

According to the utility model, the air quantity of the aeration fan 3 is utilized, the air stripping component 4 and the partition plate 14 are utilized to fully contact pollutants in water with microorganisms attached to the biological filler frame 12 while the energy consumption and the carbon source are not increased, the endogenous denitrification is utilized to perform high-efficiency denitrification, and no or only a small amount of carbon source is needed to be added, so that the total nitrogen in the effluent is stable and reaches the standard.

Although specific embodiments of the utility model have been described in detail with reference to the accompanying drawings, it should not be construed as limiting the scope of protection of the present patent. Various modifications and variations which may be made by those skilled in the art without the creative effort are within the scope of the patent described in the claims.

Claims

1. An SBBR sewage treatment plant of high-efficient denitrification, its characterized in that: comprises an SBBR reaction tank (1) communicated with a sewage component (4); the SBBR reaction tank (1) comprises a reaction tank body (11), wherein a partition plate (14) is arranged in the middle of the reaction tank body (11), one side of the partition plate (14) is arranged on the side wall of the reaction tank body (11), and a certain distance is reserved between the other side of the partition plate (14) and the opposite side wall of the reaction tank body (11);

a plurality of biological filling frames (12) uniformly distributed on two sides of a partition plate (14) are arranged in the reaction tank body (11), an aeration disc (13) is arranged at the bottom of each biological filling frame (12), a gas stripping assembly (4) is arranged on one side, close to the reaction tank body (11), of the partition plate (14), and the gas stripping assembly (4) and the aeration discs (13) are communicated with an aeration fan (3).

2. The high-efficiency denitrification SBBR wastewater treatment apparatus according to claim 1, characterized in that: the gas stripping assembly (4) comprises a lifting pipe (45) fixed on the partition board (14), one end of the lifting pipe (45) is arranged on one side of the partition board (14), and the other end of the lifting pipe (45) is communicated with a first gas pressure shell (41) positioned on the other side of the partition board (14); be equipped with on first pneumatic shell (41) with intake pipe (46) of aeration fan (3) intercommunication, be fixed with tesla pipe (44) in first pneumatic shell (41), the one end of tesla pipe (44) passes the terminal surface of first pneumatic shell (41) with riser (45) intercommunication, the other end and connecting pipe (43) of tesla pipe (44) communicate, the cover has second pneumatic shell (42) just on connecting pipe (43) be close to two air vents (421) are seted up to the bottom department symmetry of second pneumatic shell (42).

3. The high-efficiency denitrification SBBR sewage treatment apparatus according to claim 2, characterized in that: the utility model discloses a reaction tank, including baffle (14) and reaction tank body (11), riser (45) are the L type structure of falling, the one end of riser (45) is crossed baffle (14) and is buckled and extend to in reaction tank body (11), install stifled mouth (452) in the vertical pipe of riser (45) other end, be equipped with on stifled mouth (452) with it sealing fit's stifled ball (451), stifled ball (451) are connected through the connecting wire with stifled mouth (452).

4. The high-efficiency denitrification SBBR sewage treatment apparatus according to claim 2, characterized in that: the first air pressure shell (41) comprises a hollow cylinder, through holes are formed in two ends of the hollow cylinder, the through holes in the upper end of the hollow cylinder are communicated with the Tesla tube (44), and a baffle (411) is arranged at the position of the through holes in the lower end of the hollow cylinder.

5. The high-efficiency denitrification SBBR sewage treatment apparatus according to claim 2, characterized in that: the second air pressure shell (42) is of a hollow round platform structure with an upward large-diameter end, the second air pressure shell (42) is positioned in the first air pressure shell (41), and the second air pressure shell (42) is fixed on the connecting pipe (43) through a sleeve hole in the middle of the bottom surface of the second air pressure shell.

6. The high-efficiency denitrification SBBR wastewater treatment apparatus according to claim 1, characterized in that: the aeration discs (13) are sequentially communicated through air pipes, and one of the aeration discs (13) is communicated with the aeration fan (3).

7. The high-efficiency denitrification SBBR wastewater treatment apparatus according to claim 1, characterized in that: the sewage assembly (2) comprises an adjusting tank, a sewage pump is arranged in the adjusting tank, and the sewage pump is communicated with a water inlet (15) at the bottom of the reaction tank body (11) through a water pipe.