CN116040873A

CN116040873A - River course purification corridor of high-efficient nitrogen and phosphorus removal

Info

Publication number: CN116040873A
Application number: CN202310047664.2A
Authority: CN
Inventors: 王敏; 同现鹏; 黄崇鸿; 张水平; 王则寒; 张建; 张�杰; 刘晨皓
Original assignee: Shuiyi Environmental Protection Group Co ltd
Current assignee: Shuiyi Environmental Protection Group Co ltd
Priority date: 2023-01-31
Filing date: 2023-01-31
Publication date: 2023-05-02
Anticipated expiration: 2043-01-31
Also published as: CN116040873B

Abstract

The utility model discloses a river channel purification corridor for high-efficiency denitrification and dephosphorization, and aims to solve the defects that the existing constructed wetland is poor in stability and easy to generate sludge bulking phenomenon. The utility model comprises a gallery frame body, a frame body panel on the frame body, a gas pump and a water inlet pump, wherein the gallery frame body and the frame body panel form a gallery container, the gallery container comprises a first cavity and a second cavity which are sequentially arranged along the water flow direction, the first cavity is filled with zeolite, the second cavity is filled with carrier filler, the gas pump is communicated with the second cavity through a pipeline, the water inlet pump is communicated with the head of the gallery container through a pipeline, the first cavity and the second cavity are separated through a screen panel, and one end of the second cavity, which is far away from the first cavity, is provided with a water outlet. The gallery adopts a biomembrane method, has reliable stability and adaptability, and can not generate sludge bulking phenomenon.

Description

River course purification corridor of high-efficient nitrogen and phosphorus removal

Technical Field

The utility model relates to the field of water quality purification, in particular to a river channel purification corridor for high-efficiency denitrification and dephosphorization.

Background

In recent years, due to the rapid development of economy, the resource utilization intensity is increased, and the problem of eutrophication of water body can occur. Eutrophication (eutrophication) of water refers to the phenomenon of water pollution caused by excessive content of nutrient salts such as N, P in water. The essence is that the balance of the input and output of the nutrient salt is lost, so that the species distribution of the water ecological system is unbalanced, a single species overgrows, the flow of substances and energy of the system is destroyed, and the whole water ecological system gradually goes to death.

The application discloses an aerobic and anaerobic alternating denitrification and dephosphorization constructed wetland with an aeration system and water level control, which comprises a high molecular module framework, wherein a sewage water distribution pipe, an aeration layer, a geotextile wrapping layer and an emergent aquatic plant layer are arranged in the high molecular module framework, the sewage water distribution pipe, the aeration layer, the geotextile wrapping layer and the emergent aquatic plant layer are sequentially arranged from bottom to top, one side of the high molecular module framework is connected with a water outlet through a pipeline, and the other side of the high molecular module framework corresponding to the water outlet is provided with a sewage inlet; the utility model realizes the alternation of aerobic and anaerobic states through the intermittent aeration control and the water level control, cultures nitrifying bacteria and denitrifying bacteria and phosphorus-phagocyting bacteria, thereby achieving the effect of denitrification and dephosphorization.

The device is essentially a sludge method, and the sludge method has the advantages of flexibility, small investment, but has the disadvantages of poor stability and easy occurrence of sludge bulking phenomenon.

The application aims to provide a more stable and widely adaptable river channel purification corridor.

Disclosure of Invention

The utility model overcomes the defects of poor stability and easy occurrence of sludge bulking phenomenon of the existing constructed wetland, provides the river channel purification corridor for high-efficiency denitrification and dephosphorization, has better stability and adaptability, and is not easy to cause sludge bulking phenomenon.

In order to solve the technical problems, the utility model adopts the following technical scheme:

the utility model provides a high-efficient nitrogen and phosphorus removal's river course purification corridor, including the corridor framework, framework panel on the framework, air pump and intake pump, corridor framework and framework panel have formed the corridor container, the corridor container includes first cavity and the second cavity that sets gradually along the water flow direction, first cavity is filled with zeolite, the second cavity is filled with carrier filler, the air pump passes through pipeline intercommunication second cavity, the intake pump passes through the head of pipeline intercommunication corridor container, first cavity and second cavity pass through screen panel separation, the one end that first cavity was kept away from to the second cavity is equipped with the delivery port.

The purification gallery used as the main body to be immersed in the river channel makes full use of the space which is difficult to utilize, and plays a role in saving space. The purge gallery forms a closed gallery container through the gallery frame and the frame panel of the gallery surface. The closed gallery container separates the water to be treated inside from the natural water outside. The gallery container is filled with water through the water inlet pump, and the water inlet speed and frequency are adjusted through the water inlet pump, so that the gallery container is suitable for purifying the purifying capacity inside the gallery, the impact is avoided, and the activity of microorganisms inside is destroyed. The water to be treated, which is introduced by the water inlet pump, is first introduced into the first chamber. The zeolite in the first chamber serves for physical adsorption and ion exchange. Specifically, the zeolite is a tax-containing reticular aluminosilicate material composed of alkali metal or alkaline earth metal, a large number of cavities are formed in the zeolite, the specific surface is large, a large amount of ammonia nitrogen can be adsorbed, and then the sialon units in the zeolite are provided with partial negative charges and can adsorb positively charged ammonia ions. After the ammonia nitrogen in the water body to be treated is primarily adsorbed through the zeolite of the first chamber, the ammonia nitrogen content in the water body to be treated is reduced, and then the water body to be treated enters the second chamber, wherein the second chamber is filled with carrier filler. The carrier filler may be seeded with a combination of ammonia oxidizing bacteria and nitrite oxidizing bacteria and/or a phosphorus accumulating microbial colony. The carrier filler is matched with the air blowing of the air blowing pump to form a high-oxygen environment, ammonia nitrogen and/or phosphorus elements in the water body to be treated are further removed, and the water body to be treated is finally discharged out of the second chamber through the water outlet. The power of the water body to be discharged comes from a water inlet pump, the water inlet pump supplies water to the purification gallery, the water pressure of the purification gallery is increased, the water body naturally flows to a low-pressure environment, the water pressure of the first chamber is larger than that of the second chamber, the water pressure in the second chamber is larger than that of the natural water body, and then the water naturally flows from the first chamber to the second chamber.

Preferably, the device further comprises a third chamber, wherein the third chamber is separated from the second chamber through a screen panel, the third chamber is filled with carrier filler, and one end of the third chamber, which is far away from the second chamber, is provided with the screen panel. In some embodiments, a combination of ammonia oxidizing bacteria and nitrite oxidizing bacteria and a phosphorus accumulating microbial colony are disposed in the second chamber and the third chamber, respectively. Such setting is more favorable to adjusting the environment of second cavity and second cavity to more accurate active environment that provides the bacterial colony, thereby the biggest promotion nitrogen and phosphorus removal's efficiency. The screen panel is 100-150 mesh.

Preferably, the top of the corridor container is open, and emergent aquatic plants are planted on the top of the corridor container. The emergent aquatic plants firstly beautify the environment, secondly mark the positions of the purification corridor, and thirdly absorb and utilize nitrate ions and phosphorus elements which do not participate in shortcut nitrification.

Preferably, the gallery container top exceeds the horizontal plane. Through the structure, the water to be discharged and the natural water body are separated.

Preferably, the bottoms of the second chamber and the third chamber are provided with aeration pipelines, and the air blowing pump is communicated with the aeration pipelines through pipelines. And a high-oxygen environment is maintained for the second chamber and the third chamber through the aeration pipeline and the air inflation pump. For phosphorus accumulating microbial colonies, phosphorus is absorbed into the microbial body in a high oxygen environment. For the combination of ammonia oxidizing bacteria and nitrite oxidizing bacteria on the surface of carrier filler, ammonia oxidizing bacteria on the surface layer are in a high-oxygen environment and can convert ammonia nitrogen into nitrous acid nitrogen, wherein part of the ammonia nitrate is converted into nitrous acid nitrogen, part of the nitrous acid nitrogen leaves the corridor along with water flow, and part of the nitrous acid nitrogen is absorbed by emergent aquatic plants, and is treated by nitrite oxidizing bacteria on the inner layer and is converted into nitrogen gas to enter the atmosphere.

Preferably, the buoyancy balance pieces are hung on the gallery container. The corridor floats on the water surface through the buoyancy balance piece, and can be fixed through the cable, so that the corridor is movable and can be moved to a required position along the river channel as required. Because the application adopts the biomembrane valve, the valve has better impact resistance and stability, and can maintain normal work under different environments.

Preferably, the carrier filler is a polyurethane MBBR filler. The polyurethane MBBR filler contains a hydrophilic gel component, and can expand in volume when meeting water, and the specific surface area of the polyurethane MBBR filler is about 4000 m < 2 >/m < 3 >.

Preferably, the gallery outer frame is made of glass fiber reinforced plastic. The glass fiber reinforced plastic has the advantages of smaller relative density, high tensile strength, good corrosion resistance, good insulating property and good thermal property.

Preferably, the water inlet pump and the air blowing pump are electrically connected with a controller. The controller controls the water inlet speed of the water inlet pump and adjusts the corresponding aeration intensity according to the water inlet speed.

Preferably, the device further comprises an external rotary drum hung at the tail part of the gallery container, the second chamber is communicated with the external rotary drum through a pipeline, a motor is connected to the external rotary drum in a transmission way, the motor drives the external rotary drum to rotate and turn over by taking the length direction of the gallery container as an axis, microorganism carrier filler is filled in the external rotary drum, phosphorus-accumulating microorganism bacterial colonies are filled in the microorganism carrier filler, an aeration pipeline is arranged at the bottom of the external rotary drum, the aeration pipeline is communicated with an air pump, a water outlet is arranged at one side, close to the aeration pipeline, of one end, far from the second chamber, of the external rotary drum, a one-way valve is arranged on the water outlet, a water return pipeline is arranged at one side, far from the aeration pipeline, of one end, far from the second chamber, of the external rotary drum, and the water return pipeline is communicated with the first chamber. The application hangs the externally hung rotary drum behind the second cavity. The external rotating drum has the functions of adjusting the aerobic or anaerobic environment in the external rotating drum through the rotation of the self body, utilizing the characteristic that phosphorus-accumulating microorganisms fall in the aerobic environment to absorb phosphorus elements and release the phosphorus elements in the anaerobic environment, enriching the phosphorus elements and then releasing the phosphorus elements into a corridor to enable emergent aquatic plants to absorb the phosphorus elements, avoiding that a large number of biological membranes are generated after the proliferation of microorganisms and discharged into a natural water body, and releasing the phosphorus elements again in the anaerobic environment to cause idle work.

Preferably, the number of the external rotating drums is two, the pipelines communicated with the external rotating drums are provided with electromagnetic switch valves, the electromagnetic switch valves are electrically connected with a controller, and the controller alternately switches the two electromagnetic switch valves on and off and controls the two external rotating drums to turn over alternately. By the alternate work of the two externally hung rotary drums, water to be treated from the gallery can be received at any time, and the normal water level in the gallery is maintained.

Compared with the prior art, the utility model has the beneficial effects that: (1) The gallery adopts a biomembrane method, has reliable stability and adaptability, and does not have the phenomenon of sludge bulking; (2) Emerging plants are planted in the corridor, so that nitrogen and phosphorus can be consumed on site, and the quality of effluent is improved; (3) The gallery floats on the water surface, is convenient to move, can move to a required position along a river course, and is convenient to deploy and adjust.

Drawings

FIG. 1 is a schematic diagram of example 1 of the present utility model;

FIG. 2 is a schematic diagram of embodiment 2 of the present utility model;

fig. 3 is a partial schematic view of embodiment 3 of the present utility model.

In the figure:

gallery frame 1, air pump 2, water intake pump 3, first chamber 4, second chamber 5, third chamber 6, zeolite 7, carrier filler 8, screen panel 9, drainage pipeline 10, emergent aquatic plant 11, aeration pipeline 12, external drum 13, motor 14, check valve 15, return water pipeline 16, electromagnetic switch valve 17, positioning shell 18, annular groove 19, roller 20, intermediate drive shaft 21, drive slot 22, bevel gear 23, and terminal drive shaft 24.

Detailed Description

The disclosure is further described below with reference to the drawings and examples.

Example 1:

the utility model provides a river course purification corridor of high-efficient nitrogen and phosphorus removal, as shown in fig. 1, including corridor framework 1, framework panel on the framework, air pump 2 and intake pump 3, corridor framework 1 and framework panel have formed the corridor container, the corridor container includes first cavity 4 and second cavity 5 that set gradually along the water flow direction, first cavity 4 is filled with zeolite 7, second cavity 5 is filled with carrier filler 8, air pump 2 passes through pipeline intercommunication second cavity 5, intake pump 3 passes through the head of pipeline intercommunication corridor container, first cavity 4 and second cavity 5 pass through screen panel 9 and separate, the one end that first cavity 4 was kept away from to second cavity 5 is equipped with the delivery port. The water inlet pump 3 and the air pump 2 are both electrically connected with a controller. The controller controls the water inlet speed of the water inlet pump 3, and the corresponding aeration intensity is adjusted according to the water inlet speed, so that the automatic control is realized.

The top of the corridor container is open, and emergent aquatic plants 11 are planted on the top of the corridor container. The emergent aquatic plant 11 firstly beautifies the environment, secondly marks the position of the purification corridor, and thirdly absorbs and utilizes nitrate ions and phosphorus elements which do not participate in shortcut nitrification. The gallery container top exceeds the horizontal plane. Through the structure, the water to be discharged and the natural water body are separated. The planting species can be canna, reed, calamus, typha, graptopetalum, phyllostachys praeruptorum, and the like, and the planting density is 15-25 plants/m 2.

The buoyancy balance pieces are hung on the gallery container. By means of buoyancy balances, the corridor floats on the water surface, in some embodiments is secured by cables, so that the corridor is movable, as required, along the river channel to the desired location. Because the application adopts the biomembrane valve, the valve has better impact resistance and stability, and can maintain normal work under different environments.

The carrier filler 8 is polyurethane MBBR filler. The polyurethane MBBR filler contains a hydrophilic gel component, and can expand in volume when meeting water, and the specific surface area of the polyurethane MBBR filler is about 4000 m < 2 >/m < 3 >.

In some embodiments, the material of the gallery outer frame is glass fiber reinforced plastic. The glass fiber reinforced plastic has the advantages of smaller relative density, high tensile strength, good corrosion resistance, good insulating property and good thermal property.

The water outlet is in some embodiments a screen panel 9, the screen panel 9 being 100-150 mesh; in other embodiments, water is drained outwardly through a drain line 10.

The purification gallery used as the main body to be immersed in the river channel makes full use of the space which is difficult to utilize, and plays a role in saving space. The purge gallery forms a closed gallery container by the gallery frame 1 and the frame panel of the gallery surface. The closed gallery container separates the water to be treated inside from the natural water outside. The gallery container is filled with water through the water inlet pump 3, and the water inlet speed and frequency are adjusted through the water inlet pump 3, so that the gallery container is suitable for purifying the purifying capacity inside the gallery, the impact is avoided, and the activity of microorganisms inside is destroyed. The water to be treated, which is introduced by the water inlet pump 3, is first introduced into the first chamber 4. The middle zeolite 7 of the first chamber 4 serves for physical adsorption and ion exchange. Specifically, the zeolite 7 is a tax-containing reticular aluminosilicate material composed of alkali metal or alkaline earth metal, a large number of cavities are formed in the zeolite 7, the specific surface is large, a large amount of ammonia nitrogen can be adsorbed, and next, the sialon tetrahedron unit in the zeolite 7 is provided with partial negative charge, positively charged ammonia ions can be adsorbed, and because the diameter of the ammonium ions is smaller than the diameter of a cavity channel of the zeolite 7, the ammonium ions easily enter the cavity of the zeolite 7 through the adsorption of the zeolite 7 and exchange with metal cations in the crystal lattice of the zeolite 7, so that the exchanged zeolite 7 does not change in structure. After preliminary adsorption is carried out on ammonia nitrogen in the water body to be treated through the zeolite 7 of the first chamber 4, the ammonia nitrogen content in the water body to be treated is reduced, and then the water body to be treated enters the second chamber 5, and the second chamber 5 is filled with carrier filler 8. The carrier filler 8 may be seeded with a combination of ammonia oxidizing bacteria and nitrite oxidizing bacteria and a phosphorus accumulating microbial colony. The carrier filler 8 is matched with the air blowing of the air blowing pump 2 to form a high-oxygen environment, ammonia nitrogen and/or phosphorus elements in the water body to be treated are further removed, and the water body to be treated is finally discharged out of the second chamber 5 through the water outlet. The power of the water body to be discharged comes from the water inlet pump 3, the water inlet pump 3 supplies water to the purification gallery, the water pressure of the purification gallery is lifted, the water body naturally flows to a low-pressure environment, the water pressure of the first chamber 4 is larger than that of the second chamber 5, the water pressure in the second chamber 5 is larger than that of the natural water body, and the water naturally flows from the first chamber 4 to the second chamber 5.

Example 2:

example 2 also has the following features on the basis of example 1:

as shown in fig. 2, the device further comprises a third chamber 6, the third chamber 6 is separated from the second chamber 5 by a screen panel 9, the third chamber 6 is filled with carrier filler 8, and one end of the third chamber 6 away from the second chamber 5 is provided with the screen panel 9 for water outlet. In some embodiments, a combination of ammonia oxidizing bacteria and nitrite oxidizing bacteria and a phosphorus accumulating microbial colony are disposed in the second chamber 5 and the third chamber 6, respectively. Such setting is more favorable to adjusting the environment of second cavity 5 and second cavity 5 to more accurate active environment that provides the bacterial colony, thereby the biggest promotion nitrogen and phosphorus removal's efficiency. Wherein, 8 carrier fillers in the second chamber 5 are combined strains of ammonia oxidizing bacteria and nitrite oxidizing bacteria, and 8 carrier fillers in the third chamber 6 are phosphorus accumulating microbial colonies.

The bottom of the third chamber 6 is also provided with an aeration pipe 12, and the air pump 2 is communicated with the aeration pipe 12 through a pipe. A high oxygen environment is maintained for the second chamber 5 and the third chamber 6 by the aeration pipe 12 and the aeration pump 2. For phosphorus accumulating microbial colonies, phosphorus is absorbed into the microbial body in a high oxygen environment. For the combination of ammonia oxidizing bacteria and nitrite oxidizing bacteria on the surface of the carrier filler 8, the ammonia oxidizing bacteria on the surface layer are in a high-oxygen environment and convert ammonia nitrogen into nitrous acid nitrogen, wherein part of the ammonia nitrate is converted into nitrous acid nitrogen, part of the nitrous acid nitrogen leaves the corridor along with water flow, and part of the nitrous acid nitrogen is absorbed by emergent aquatic plants 11, and is treated by nitrite oxidizing bacteria on the inner layer and converted into nitrogen gas to enter the atmosphere.

Example 3:

example 3 also has the following features on the basis of example 1:

as shown in fig. 3, the external rotary drum 13 is hung at the tail of the gallery container, the second chamber 5 is communicated with the external rotary drum 13 through a pipeline, the external rotary drum 13 is in transmission connection with a motor 14, the motor 14 drives the external rotary drum 13 to rotate and turn over by taking the length direction of the gallery container as an axis, microorganism carrier fillers 8 are filled in the external rotary drum 13, phosphorus-accumulating microorganism colonies are formed in the microorganism carrier fillers 8, an aeration pipeline 12 is arranged at the bottom of the external rotary drum 13, the aeration pipeline 12 is communicated with the air pump 2, a water outlet is formed in one side, close to the aeration pipeline 12, of one end, far away from the second chamber 5, of the external rotary drum 13, a one-way valve 15 is arranged on the water outlet, a water return pipeline 16 is arranged on one side, far away from the aeration pipeline 12, of one end, far away from the second chamber 5, of the external rotary drum 13, of the water return pipeline 16 is communicated with the first chamber 4. The application hangs an externally hung rotary drum 13 behind the second chamber 5. The function of the external rotary drum 13 is to adjust the aerobic or anaerobic environment in the external rotary drum 13 by self rotation, utilize the characteristic that phosphorus-accumulating microorganisms fall in the aerobic environment to absorb phosphorus elements and release phosphorus elements in the anaerobic environment, enrich the phosphorus elements and release the phosphorus elements into galleries, enable emergent aquatic plants 11 to absorb the phosphorus elements, avoid a large number of biological membranes generated after microorganism proliferation to be discharged into natural water, and release the phosphorus elements again in the anaerobic environment to cause idle work.

The number of the outer hanging rotary drums 13 is two, electromagnetic switch valves 17 are arranged on the pipelines communicated with the outer hanging rotary drums 13, the electromagnetic switch valves 17 are electrically connected with a controller, and the controller alternately switches on and off the two electromagnetic switch valves 17 and controls the two outer hanging rotary drums 13 to turn over alternately. By the alternate operation of the two externally hung rotary drums 13, the water to be treated from the gallery can be received at any time, and the normal water level in the gallery is maintained. Wherein, the turning refers to a reciprocating cycle of turning 180 degrees after rotating 180 degrees forward.

In some embodiments, the driving connection between the external hanging rotary drum 13 and the motor 14 is such that the second chamber 5 is connected with the external hanging rotary drum 13 in a pipeline manner, one end of the second chamber 5 far away from the first chamber 4 is provided with a positioning shell 18 extending out, the external hanging rotary drum 13 is inserted into the positioning shell 18, the outer wall of the external hanging rotary drum 13 is provided with a plurality of annular grooves 19, and the annular grooves 19 are connected with rollers 20 in a rotating manner at equal intervals along the circumferential direction of the external hanging rotary drum 13. The roller 20 extends out of the ring groove 19 and abuts against the positioning shell 18. The motor 14 is connected with an intermediate transmission shaft 21 in a transmission way, the tail end of the intermediate transmission shaft 21 is provided with a transmission gear, the positioning shell 18 is provided with a transmission slot 22, the intermediate transmission shaft 21 stretches into the transmission slot 22 and turns through the cooperation of the transmission gear and a bevel gear 23 and is coaxially connected with the externally hung rotary drum 13 through a terminal transmission shaft 24 so as to drive the externally hung rotary drum 13 to rotate.

The principle is that when the external hanging rotary drum 13 is at the normal position, the aeration pipeline 12 is positioned below the liquid level, the water outlet is also positioned below the liquid level, the water return pipeline 16 is positioned above the liquid level, the phosphorus accumulating microorganism is in an aerobic environment to absorb phosphorus, and the phosphorus level in the water body to be treated is reduced. After a period of time, the external hanging rotary drum 13 is turned over, the aeration pipeline 12 and the water outlet are positioned above the liquid level, the lower part of the liquid level is in an anaerobic and anaerobic environment, phosphorus accumulating microorganism bacteria release phosphorus elements, the aeration pipeline 12 continues to work, the air pressure above the liquid level is increased, and the liquid is conveyed into a corridor container in a pressing way through the water return pipeline 16 to be absorbed by emergent aquatic plants 11. Through the structure, the speed of sludge generation by phosphorus accumulating microorganism colonies is reduced, so that maintenance period is shortened, and maintenance cost is reduced.

The above-described embodiments are merely preferred embodiments of the present utility model, and the present utility model is not limited in any way, and other variations and modifications may be made without departing from the technical aspects set forth in the claims.

Claims

1. The utility model provides a river course purification corridor of high-efficient nitrogen and phosphorus removal, a serial communication port, including the corridor framework, framework panel on the framework, air pump and intake pump, corridor framework and framework panel have formed the corridor container, the corridor container includes first cavity and the second cavity that sets gradually along the rivers direction, first cavity is filled with zeolite, the second cavity is filled with carrier filler, the air pump passes through pipeline intercommunication second cavity, the intake pump passes through the head of pipeline intercommunication corridor container, first cavity and second cavity pass through screen panel separation, the one end that first cavity was kept away from to the second cavity is equipped with the delivery port.

2. The efficient nitrogen and phosphorus removal riverway purification gallery according to claim 1, further comprising a third chamber, wherein the third chamber is separated from the second chamber by a screen panel, the third chamber is filled with carrier filler, and a screen panel is arranged at one end of the third chamber away from the second chamber.

3. The efficient nitrogen and phosphorus removal riverway purification corridor of claim 1 or 2, wherein the top of the corridor container is open, and the top of the corridor container is planted with emergent aquatic plants.

4. A highly effective denitrification and dephosphorization river course purification corridor as claimed in claim 3, wherein the top of the corridor vessel exceeds the horizontal plane.

5. The efficient nitrogen and phosphorus removal riverway purification gallery according to claim 2, wherein aeration pipelines are arranged at the bottoms of the second chamber and the third chamber, and the air pump is communicated with the aeration pipelines through the pipelines.

6. The efficient nitrogen and phosphorus removal river channel purification corridor of claim 1, further comprising a plurality of buoyancy balance pieces, wherein the buoyancy balance pieces are hung on the corridor container.

7. The efficient nitrogen and phosphorus removal river channel purification corridor of claim 1, wherein the carrier filler is polyurethane MBBR filler.

8. The efficient nitrogen and phosphorus removal river purification corridor of claim 3, wherein the water inlet pump and the air pump are electrically connected with the controller.

9. The efficient nitrogen and phosphorus removal river channel purification corridor according to claim 1, further comprising an external rotary drum hung at the tail of the corridor container, wherein the second chamber is communicated with the external rotary drum through a pipeline, a motor is connected with the external rotary drum in a transmission manner, the motor drives the external rotary drum to rotate and turn over by taking the length direction of the corridor container as an axis, microorganism carrier fillers are filled in the external rotary drum, phosphorus-accumulating microorganism colonies are filled in the microorganism carrier fillers, an aeration pipeline is arranged at the bottom of the external rotary drum, the aeration pipeline is communicated with an air pump, a water outlet is arranged at one side, close to the aeration pipeline, of one end, far away from the second chamber, of the external rotary drum, a one-way valve is arranged on the water outlet, and a water return pipeline is arranged at one side, far away from the aeration pipeline, of the external rotary drum, and is communicated with the first chamber.

10. The efficient nitrogen and phosphorus removal river channel purification corridor according to claim 9, wherein the number of the external hanging rotary drums is two, electromagnetic switch valves are arranged on pipelines communicated with the external hanging rotary drums, the electromagnetic switch valves are electrically connected with a controller, and the controller alternately switches on and off the two electromagnetic switch valves and controls the two external hanging rotary drums to alternately turn over.