A buried synchronous river sewage treatment and ecological bank protection structure

Abstract

The present invention provides an underground synchronous river sewage treatment and ecological revetment structure, the main body of the structure is a reinforced concrete structure or a steel prefabricated part, which can be buried in the river bank slope and integrated with the river. The structure is divided into an aerobic chamber, a transition chamber, an anaerobic chamber, and an ecological vegetation revetment area; wherein the aerobic chamber is located on the left side of the structure, and the transition chamber, the anaerobic chamber, and the ecological vegetation revetment area are located on the right side of the structure; the transition chamber is located on the left side of the anaerobic chamber; the transition chamber and the anaerobic chamber are closed and covered by a cover plate; a part of the ecological vegetation revetment area is located on the upper part of the transition chamber and the anaerobic chamber, and a part is located on the right side of the anaerobic chamber. The underground synchronous river sewage treatment and ecological revetment structure can efficiently treat river sewage while having an ecological revetment function, ensuring the safety and stability of the entire river, and at the same time carrying out ecological construction on both sides of the river.

Description

Technical Field

[0001] The invention relates to treating river sewage by microorganisms and plants, to river ecological bank protection, and belongs to the technical field of river sewage treatment and river bank protection, and in particular to a river sewage treatment and ecological bank protection structure. Background Art

[0002] In the process of rapid social and economic development and steady progress of urbanization, some enterprises have discharged untreated production wastewater and some coastal residents' domestic sewage directly or indirectly into nearby rivers, causing serious water pollution in rivers flowing through urban areas, and even black and smelly water. The deteriorating water environment in urban areas has seriously affected the quality of urban environment and the daily life of coastal residents, and also restricted the sustainable and healthy development of social economy. Therefore, comprehensive treatment of polluted rivers in cities and restoration of surrounding ecosystems have become key issues to be addressed in urban ecological construction.

[0003] Some technologies have been developed and applied for the treatment of river sewage, such as constructing and restoring buffer zones, reducing river slopes, reshaping shallows and deep pools, artificial oxygenation, artificial floating islands, artificial wetlands, etc., but these methods are difficult to achieve ideal treatment effects for heavily polluted river sewage. The bio-ecological method is a technology that uses cultivated plants and inoculated microorganisms to transfer, transform and degrade pollutants in river sewage, thereby purifying polluted river water. It has the advantages of good treatment effect, low engineering cost, low operating cost, no need to add chemicals to the water body, no secondary pollution, and can be integrated with the surrounding landscape to create a beautiful landscape environment. It has become a new favorite in river sewage treatment technology. However, how to solve the problems of serious loss of functional microorganisms, stable accumulation of biomass and environmental differences required for the degradation of different pollutants in the bio-ecological method in river management has become the key to whether this technology can be successfully applied to river sewage treatment.

[0004] River bank protection is one of the important tasks of urban construction. In the past, traditional hard bank protection technology was mostly used. This technology can meet the needs of flood control and shipping, but it mainly focuses on the safety and durability of engineering structures. Traditional hard materials such as monotonous concrete and mortar masonry are mostly used, ignoring the ecological function of the river bank, resulting in an imbalance in the ecological structure, degradation of the ecosystem, and reduced self-purification capacity of the water body. Ecological bank protection is based on the functions and effects of traditional bank protection, and improves the ecological effect of bank protection projects, so that water bodies, soil and organisms can be harmoniously promoted and developed together, and a high-quality natural environment can be constructed. It has the ecology, landscape and permeability of natural bank protection, and the structure and stability of hard bank protection. It also helps to improve the self-sustaining and self-renewal capabilities of river ecosystems and improve the stability of ecosystems. It has become the mainstream of river regulation and bank protection projects. Summary of the invention

[0005] The purpose of the present invention is to solve the problem that the currently widely used river sewage treatment technology has unsatisfactory effects, and the biological-ecological sewage treatment process cannot fully play its function in the river sewage treatment project due to serious biological loss. In order to solve the current river management process, sewage treatment projects and bank protection projects are carried out separately, which directly leads to repeated engineering steps and high management costs. Therefore, an underground synchronous river sewage treatment and ecological bank protection structure is proposed, which can effectively solve the above-mentioned problems, efficiently treat river sewage while having ecological bank protection functions, ensure the safety and stability of the entire river, and carry out ecological construction on both sides of the river at the same time. Through compartmentalized design, the structure can realize the physical space of different functional microorganisms, stably aggregate various functional microorganisms and realize the relative independence and non-interference of the required environmental conditions, so as to maximize their degradation function of different pollutants; through the optimal matching between biology and ecology, the original technical advantages of biological and ecological treatment are maintained to the greatest extent; the hard structures such as sand and pebbles, prefabricated concrete blocks, impact-resistant ecological blankets, and bank protection plants are combined with vegetation to ensure the stability of the slope, prevent water erosion, and prevent soil erosion. On the basis of the effect, a two-sexual circulation system of matter, information, and energy is formed between water, soil, and organisms, which is self-organized and self-repaired, so that the slope protection not only has a landscape effect, but also can repair polluted river water and improve the self-purification ability of the river, thereby providing protection for the health of the river ecosystem.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solutions to achieve the above problems:

[0007] A buried synchronous river sewage treatment and ecological revetment structure has a main body of reinforced concrete structure or steel prefabricated parts, which can be buried in the river bank slope, integrated with the river and coordinated with the landscape. The structure is mainly divided into an aerobic chamber, a transition chamber, an anaerobic chamber, and an ecological vegetation revetment area. Among them, the aerobic chamber is located on the left side of the structure, and the transition chamber, anaerobic chamber, and ecological vegetation revetment area are located on the right side of the structure; the transition chamber is located on the left side of the anaerobic chamber; the transition chamber and anaerobic chamber are closed and covered by a cover plate; part of the ecological vegetation revetment area is located on the upper part of the transition chamber and anaerobic chamber, and part is located on the right side of the anaerobic chamber.

[0008] The aerobic chamber includes rainwater grate, water inlet pipe, gravel layer, support plate, fiber filler, aeration pipe I from top to bottom. Aerobic activated sludge is added in the aerobic chamber. The aerobic chamber is connected to the transition chamber through the slit between the right wall of the aerobic chamber and the bottom of the structure, the gap between the right wall of the aerobic chamber and the vertical partition I, and the slit between the vertical partition I and the cover. The transition chamber contains aeration pipe II and fiber filler. Aeration pipe II is located in the lower left corner of the transition chamber. Activated sludge is added in the transition chamber. The transition chamber is connected to the anaerobic chamber through the slit between the vertical partition II and the bottom of the structure, the gap between the vertical partition II and the vertical partition III, and the slit between the vertical partition III and the cover. The anaerobic chamber is equipped with fiber filler and anaerobic denitrification sludge is added. It is connected to the dry stone area through the outlet pipe. The ecological vegetation revetment area includes sand and pebbles, geotextiles, precast concrete blocks, impact-resistant ecological blankets, palm stones, dry masonry blocks, planting soil, revetment plants, emergent plants or submerged plants.

[0009] Among them, the aerobic chamber, transition chamber and anaerobic chamber in the underground synchronous river sewage treatment and ecological bank protection structure are equal in length and width.

[0010] Among them, in the buried synchronous river sewage treatment and ecological bank protection structure, the slit between the right wall of the aerobic chamber and the bottom of the structure is as wide as the aerobic chamber, and the height of the slit is 5 to 10 cm. The width of the gap between the right wall of the aerobic chamber and the vertical partition I is 5 to 8 cm; the vertical partition I, vertical partition II, vertical partition III, and the cover plate are all as wide as the structure, and the vertical partition I and vertical partition III are sealed with the bottom of the structure, leaving a slit as wide as the structure between them and the cover plate, and the height of the slit is 5 to 10 cm; the vertical partition II is sealed with the cover plate, leaving a slit as wide as the structure with the bottom of the structure, and the height of the slit is 5 to 10 cm.

[0011] Among them, the length, width and height ratio of the aerobic chamber in the buried synchronous river sewage treatment and ecological bank protection structure is 1: (3-5): (2-6), the aeration pipe I is located in the lower left corner of the aerobic chamber and is laid along the width direction of the aerobic chamber. Aeration circular holes are opened on the aeration pipe I, the diameter of the circular holes is 1-2 cm, and the opening rate is 0.3-0.5.

[0012] Among them, the rainwater grate in the underground synchronous river sewage treatment and ecological bank protection structure is the top cover of the aerobic chamber, the water inlet pipe is located on the gravel layer, and circular holes for water distribution are opened on the left and right sides of the water inlet pipe. The diameter of the circular holes is 1 to 1.5 cm, the thickness of the gravel layer is 15 to 20 cm, the gravel particle size is 3 to 5 cm, and the support plate at the bottom of the gravel layer is provided with a gap, the opening rate is 0.5, the gap length is 8 to 12 cm, and the width is 2 to 4 cm.

[0013] Among them, the aeration pipe II in the transition chamber of the buried synchronous river sewage treatment and ecological bank protection structure is located at the lower left corner of the transition chamber and is laid along the width direction of the transition chamber. Aeration circular holes are opened on the aeration pipe II, the diameter of the circular holes is 1 cm, and the opening rate is 0.2-0.4.

[0014] Among them, the type of sludge added to the anaerobic chamber of the underground synchronous river sewage treatment and ecological bank protection structure is anaerobic denitrification sludge.

[0015] Among them, the inclination angle of the cover plate in the buried synchronous river sewage treatment and ecological bank protection structure is the same as the angle of the river bank slope, and the cover plate is sealed with the right wall of the structure, the top of the vertical partition II, and the right wall of the aerobic chamber; the top of the cover plate is 10 to 20 cm lower than the top of the aerobic chamber.

[0016] The ecological vegetation revetment area in the underground synchronous river sewage treatment and ecological revetment structure includes the area above the cover plate and the outer area of ​​the right wall of the structure. The area above the cover plate is covered with sand and pebbles, geotextiles, prefabricated concrete blocks, impact-resistant ecological blankets, palm stones in sequence, and the prefabricated concrete blocks are filled with planting soil; the outer area of ​​the right wall of the structure includes dry masonry stones and riverbed mud, which is connected to the bottom of the riverbed.

[0017] The concrete prefabricated blocks in the underground synchronous river sewage treatment and ecological bank protection structure are square or regular hexagonal, with a side length of 20 to 30 cm, a side thickness of 2 to 4 cm, and a height of 20 to 30 cm. A circular hole with a diameter of 3 to 5 cm is opened at the center of each side. The interior of the concrete prefabricated blocks is filled with planting soil and native bank protection plants are planted; emergent or submerged plants are planted in dry stone blocks and riverbed mud areas.

[0018] Among them, the impact-resistant ecological blanket in the underground synchronous river sewage treatment and ecological bank protection structure is divided into four layers from bottom to top. The first layer is polyester composite fiber fabric, the second layer is polyester non-woven fabric filter layer, the third layer is grass seed and fertilizer layer; the fourth layer is wood pulp composite fiber fabric.

[0019] Compared with the prior art, the present invention has the following beneficial effects and advantages:

[0020] 1) Realize river sewage treatment and river ecological revetment simultaneously. The structure can be optimized and designed according to the relevant size parameters of the river to be treated, and then buried in the river bank slope, forming a bypass biological purification system parallel to the river, which can efficiently purify the water quality of the river; at the same time, the ecological vegetation revetment area of ​​the structure has the function of ecological revetment, realizing the structural and stability of the revetment while restoring the ecological structure of the river, and can seamlessly integrate the natural landscape of the river, and carry out efficient pollution control and ecological revetment projects simultaneously.

[0021] 2) Ecological function integrity. Ecological vegetation revetment can solve the shortcomings of traditional revetment that isolates soil from water, maintain the unified integrity of the embankment and river ecology, and complete the natural transition between water and land. It can also provide a good living environment for some aquatic animals that need to go to the shore to forage and lay eggs, and better maintain biodiversity.

[0022] 3) Water self-purification function. When land pollutants penetrate into the water, the plants and root microorganisms growing in the vegetation revetment area can use the pollutants as a nutrient source to achieve the effect of pollutant removal, reduce the spread of non-point source pollution such as agricultural irrigation to the river, and reduce the risk of river pollution. In addition, the emergent or submerged plants growing in the dry masonry stones in the ecological vegetation revetment area can absorb and utilize pollutants in the river water, purify the sewage in the river, and can play a certain role in repairing the polluted rivers, especially the urban rivers.

[0023] 4) Prevent bank slope erosion and soil loss. The selection of materials, structural form, and location of the ecological vegetation revetment area can effectively prevent hydraulic erosion and soil loss. Geotextiles and precast concrete blocks can effectively prevent soil loss during rainwater seepage, and the sand and gravel layer can allow rainwater to quickly flow into the river along the structure cover; the upper impact-resistant ecological blanket has a strong anti-impact ability, and the anti-impact flow rate can reach 4m / s. It can be combined with palm stones to prevent serious loss of surface soil under strong overflow conditions.

[0024] 5) Strong pollution control and impact resistance capabilities. By fixing the working chambers of each functional microorganism and placing fiber fillers with high adhesion properties, the functional microorganisms can be fixed and aggregated, significantly increasing the amount of functional microorganisms, and solving the bottleneck problem of serious loss of functional microorganisms and poor effects in the traditional biological treatment of river sewage; through the autonomous setting of the start and stop of aeration in the transition chamber, the volume of the aerobic zone and the volume of the anaerobic zone can be flexibly allocated, thereby maximizing the decontamination efficiency of the unit functional microorganism. The water quality and water volume of the river in the rainy and dry seasons are quite different. The high biological holdings in the structure and the flexible adjustment of the aerobic and anaerobic functions of the transition chamber can ensure the pollution control effect under the drastic fluctuations of water quality and water volume.

[0025] A series of simplified concepts are introduced in the Summary of the Invention, which will be further described in detail in the Detailed Description of the Invention. The Summary of the Invention does not mean to attempt to define the key features and essential technical features of the claimed technical solution, nor does it mean to attempt to determine the scope of protection of the claimed technical solution.

[0026] The advantages and features of the present invention are described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic diagram of the structure of the underground synchronous river sewage treatment and ecological bank protection structure;

[0028] Figure 2 This is a schematic diagram of the concrete prefabricated block structure;

[0029] Among them: 1. Aerobic chamber; 2. Transition chamber; 3. Anaerobic chamber; 4. Ecological vegetation revetment area; 5. Rainwater grate; 6. Water inlet pipe; 7. Gravel layer; 8. Support plate; 9. Fiber filler; 10 Aeration pipe I; 11. Vertical partition I; 12. Aeration pipe II; 13. Vertical partition II; 14. Cover plate; 15. Sand and pebbles; 16. Geotextile; 17. Precast concrete blocks; 18. Planting soil; 19. Impact-resistant ecological blanket; 20. Palm stone; 21. Bank protection plants; 22. Dry stone blocks; 23. Emergent or submerged plants; 24. Outlet pipe; 25. Vertical partition III. DETAILED DESCRIPTION

[0030] In the following description, a large number of specific details are provided to provide a more thorough understanding of the present invention. However, it is obvious to those skilled in the art that the present invention can be implemented without one or more of these details. In other examples, in order to avoid confusion with the present invention, some technical features well known in the art are not described.

[0031] In order to fully understand the present invention, a detailed structure will be presented in the following description. Obviously, the implementation of the present invention is not limited to the specific details familiar to those skilled in the art. The preferred embodiments of the present invention are described in detail below, but in addition to these detailed descriptions, the present invention may also have other embodiments.

[0032] The embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0033] like Figure 1-2 As shown, a buried synchronous river sewage treatment and ecological revetment structure is mainly a reinforced concrete structure or a steel prefabricated part, which can be buried in the river bank slope, integrated with the river and coordinated with the landscape. The structure is mainly divided into an aerobic chamber 1, a transition chamber 2, an anaerobic chamber 3, and an ecological vegetation revetment area 4. Among them, the aerobic chamber 1 is located on the left side of the structure, and the transition chamber 2, the anaerobic chamber 3, and the ecological vegetation revetment area 4 are located on the right side of the structure; part of the ecological vegetation revetment area 4 is located on the upper part of the transition chamber 2 and the anaerobic chamber 3, and part of it is located on the right side of the anaerobic chamber 3; the transition chamber 2 is located on the left side of the anaerobic chamber 3; the transition chamber 2 and the anaerobic chamber 3 are closed and covered by a cover plate 14.

[0034] The aerobic chamber 1 includes a rainwater grate 5, a water inlet pipe 6, a gravel layer 7, a support plate 8, a fiber filler 9, and an aeration pipe Ⅰ10 from top to bottom. Aerobic activated sludge is added in the aerobic chamber 1. The aerobic chamber 1 is connected to the transition chamber 2 through the slit between the right wall of the aerobic chamber 1 and the bottom of the structure, the gap between the right wall of the aerobic chamber 1 and the vertical partition Ⅰ11, and the slit between the vertical partition Ⅰ11 and the cover 14. The transition chamber 2 includes an aeration pipe Ⅱ12 and a fiber filler 9. The aeration pipe Ⅱ12 is located at the lower left corner of the transition chamber 2. Activated sludge is added in the transition chamber 2. The transition chamber 2 is connected to the anaerobic chamber 3 through the slit between the vertical partition Ⅱ13 and the bottom of the structure, the gap between the vertical partition Ⅱ13 and the vertical partition Ⅲ25, and the slit between the vertical partition Ⅲ25 and the cover 14. The anaerobic chamber 3 is equipped with fiber filler 9 and anaerobic denitrification sludge, which is connected to the dry stone area 22 through the outlet pipe 24. The ecological vegetation revetment area 4 includes sand and pebbles 15, geotextile 16, prefabricated concrete blocks 17, impact-resistant ecological blankets 19, palm stones 20, dry stone 22, planting soil 18, revetment plants 21, and emergent plants or submerged plants 23.

[0035] The working process of the underground synchronous river sewage treatment and ecological bank protection structure provided by the present invention is as follows:

[0036] 1) Working process of river sewage treatment: river sewage is pumped into the water inlet pipe 6 by a submersible pump, and flows into the gravel layer 7 through the water distribution holes on the left and right sides of the water inlet pipe 6. The suspended matter in the sewage can be intercepted and removed by the gravel layer 7. At the same time, the gravel layer 7 can break up and disperse the water flow to achieve uniform water distribution in the aerobic chamber 1. After the sewage enters the aerobic chamber 1, it is fully mixed and contacted with the air entering the aerobic chamber 1 through the aeration pipe Ⅰ10 from the gas compressor, the aerobic activated sludge attached to the fiber filler 9 and the aerobic activated sludge suspended in the aerobic chamber 1. Aerobic microorganisms can directly degrade organic matter in the sewage, absorb and utilize phosphorus in the sewage, and ammonia nitrogen in the sewage is converted into nitrate through aerobic nitrification. The sewage treated in aerobic chamber 1 enters transition chamber 2 through the slit between the right wall of aerobic chamber 1 and the bottom of the structure, the gap between the right wall of aerobic chamber 1 and vertical partition Ⅰ11, and the slit between vertical partition Ⅰ11 and cover plate 14. Transition chamber 2 can adopt aeration or non-aeration operation mode according to the effluent water quality. In different modes, aerobic environment and anaerobic environment can be formed respectively, and aerobic removal or anaerobic removal of pollutants can be achieved under different working conditions. The sewage treated in transition chamber 2 enters anaerobic chamber 3 through the slit between vertical partition Ⅱ13 and the bottom of the structure, the gap between vertical partition Ⅱ13 and vertical partition Ⅲ25, and the slit between vertical partition Ⅲ25 and cover plate 14. Under anaerobic conditions, under the action of anaerobic denitrification sludge, the nitric nitrogen generated under aerobic conditions in the sewage undergoes denitrification reaction to generate nitrogen. In the process, the remaining organic matter in the sewage is used as a carbon source to remove nitrogen pollutants while further degrading organic matter. The small amount of nitrogen and phosphorus pollutants remaining after degradation in the anaerobic chamber 3 enter the dry stone blocks 22 of the ecological plant revetment area 4 and the riverbed mud area through the outlet pipe 24, and come into contact with the roots of emergent or submerged plants in the area. Under the action of the roots and root microorganisms, the remaining nitrogen and phosphorus are further absorbed and utilized, and the river sewage is purified and re-enters the river water body.

[0037] After the surface source sewage and other types of sewage flowing along the coastal slope enter the ecological vegetation revetment area 4, the ecological vegetation revetment area 4 can perform a pollution reduction function similar to that of an artificial wetland. The pollutants in the sewage can be physically adsorbed, intercepted, biodegraded, and absorbed and utilized by the roots in the process of flowing through the planting soil 18, revetment plants 21, geotextile 16, and sand and pebbles 15, so as to be degraded and removed. The purified sewage finally enters the river water through the openings on the precast concrete parts 17 or the gaps between the sand and pebbles 15.

[0038] 2) Principles of riverbank ecological revetment: ① The upper palm stone 20 and the impact-resistant ecological blanket 19 of the ecological vegetation revetment area 4 can grow revetment plants 21, and the concrete prefabricated blocks 17 are filled with planting soil 18, which also provides a strong growth environment for the growth of revetment vegetation 21. By adopting wild native plants, trees, shrubs and grasses, a natural vegetation community structure and a biological habitat are established; the developed root system of plants can enhance the water storage and soil consolidation capacity of the embankment, enhance soil and water conservation and anti-erosion capabilities, and also form a good landscape effect, with both landscape value and protection value; ② Palm stone 20 and a large amount of vegetation can effectively reduce the erosion of the soil surface by wind and rain , slowing down the scouring of soil by rainwater, river water, etc.; ③ Sand and pebbles 15, porous concrete precast parts 17, and palm stones 20 can ensure the mutual connection between water, soil, and air, and maintain the lateral connectivity of the river; ④ The impact-resistant ecological blanket 19 and geotextile 16 have the filtering function of being permeable to water but not permeable to soil, which can not only prevent soil loss but also realize the normal exchange of water in the soil; ⑤ Dry-laid stones 22 are stacked regularly or irregularly, and the riverbed mud gradually fills the gaps between the stones. The rough surface can provide a good living and breeding place for aquatic plants, aquatic animals, and amphibians, which is conducive to maintaining the biodiversity of the river water body.

[0039] The contents described in the embodiments of this specification are merely enumerations of implementation forms of the inventive concept, and the protection scope of the present invention should not be considered as limited to the specific forms described in the embodiments. It should be understood that those skilled in the art can make improvements or changes based on the above description, so the protection scope of the present invention also includes equivalent technical means that those skilled in the art can think of based on the inventive concept.

Claims

1. An underground synchronous river sewage treatment and ecological bank protection structure, characterized by: The main body of the structure is a reinforced concrete structure or a steel prefabricated part, buried in the river bank slope and integrated with the river. The structure is divided into an aerobic chamber, a transition chamber, an anaerobic chamber, and an ecological vegetation revetment area; wherein the aerobic chamber is located on the left side of the structure, and the transition chamber, anaerobic chamber, and ecological vegetation revetment area are located on the right side of the structure; The transition chamber is located on the left side of the anaerobic chamber; the transition chamber and the anaerobic chamber are closed and covered by a cover plate; part of the ecological vegetation revetment area is located on the upper part of the transition chamber and the anaerobic chamber, and part is located on the right side of the anaerobic chamber; The aerobic chamber includes rainwater grates, water inlet pipes, gravel layers, support plates, fiber fillers, and aeration pipes I from top to bottom. Aerobic activated sludge is added into the aerobic chamber. The aerobic chamber is connected to the transition chamber through the slit between the right wall of the aerobic chamber and the bottom of the structure, the gap between the right wall of the aerobic chamber and the vertical partition I, and the slit between the vertical partition I and the cover plate. The transition chamber contains aeration pipes II and fiber fillers. Aeration pipes II are located at the lower left corner of the transition chamber. Activated sludge is added into the transition chamber. The transition chamber is connected to the anaerobic chamber through the slit between the vertical partition II and the bottom of the structure, the gap between the vertical partition II and the vertical partition III, and the slit between the vertical partition III and the cover plate. The anaerobic chamber is equipped with fiber fillers and anaerobic denitrification sludge is added, which is connected to the dry stone area through the outlet pipe. The ecological vegetation revetment area contains sand and pebbles, geotextiles, and concrete precast concrete. Blocks, impact-resistant eco-mats, palm stones, dry masonry, planting soil, revetment plants, emergent plants and submerged plants.

2. The underground synchronous river sewage treatment and ecological bank protection structure according to claim 1 is characterized by: The aerobic chamber, the transition chamber and the anaerobic chamber in the underground synchronous river sewage treatment and ecological bank protection structure are equal in length and width.

3. The underground synchronous river sewage treatment and ecological bank protection structure according to claim 1 is characterized by: In the buried synchronous river sewage treatment and ecological bank protection structure, the slit between the right wall of the aerobic chamber and the bottom of the structure is as wide as the aerobic chamber, and the height of the slit is 5-10 cm. The width of the gap between the right wall of the aerobic chamber and the vertical partition I is 5-8 cm; the vertical partition I, vertical partition II, vertical partition III, and the cover plate are all as wide as the structure, and the vertical partition I and vertical partition III are sealed and joined to the bottom of the structure, leaving a slit as wide as the structure between them and the cover plate, and the height of the slit is 5-10 cm; the vertical partition II is sealed and joined to the cover plate, leaving a slit as wide as the structure with the bottom of the structure, and the height of the slit is 5-10 cm.

4. The underground synchronous river sewage treatment and ecological bank protection structure according to claim 1 is characterized by: The length, width and height ratio of the aerobic chamber in the buried synchronous river sewage treatment and ecological bank protection structure is 1: (3-5): (2-6), the aeration pipe I is located at the lower left corner of the aerobic chamber and is laid along the width direction of the aerobic chamber, and aeration circular holes are opened on the aeration pipe I, the diameter of the circular holes is 1-2 cm, and the opening rate is 0.3-0.

5.

5. The underground synchronous river sewage treatment and ecological bank protection structure according to claim 1 is characterized by: The rainwater grate in the underground synchronous river sewage treatment and ecological revetment structure is the top cover of the aerobic chamber, the water inlet pipe is located on the gravel layer, and circular holes for water distribution are opened on the left and right sides of the water inlet pipe, with a diameter of 1-1.5 cm, a thickness of the gravel layer of 15-20 cm, a gravel particle size of 3-5 cm, and a gap is opened on the support plate at the bottom of the gravel layer, with an opening rate of 0.5, a gap length of 8-12 cm, and a width of 2-4 cm; The aeration pipe II in the transition chamber of the buried synchronous river sewage treatment and ecological bank protection structure is located at the lower left corner of the transition chamber and is laid along the width direction of the transition chamber. Aeration circular holes are opened on the aeration pipe II, the diameter of the circular holes is 1 cm, and the opening rate is 0.2-0.

4.

6. The underground synchronous river sewage treatment and ecological bank protection structure according to claim 1 is characterized by: The type of sludge added to the anaerobic chamber of the buried synchronous river sewage treatment and ecological bank protection structure is anaerobic denitrification sludge.

7. The underground synchronous river sewage treatment and ecological bank protection structure according to claim 1 is characterized by: The inclination angle of the cover plate in the buried synchronous river sewage treatment and ecological bank protection structure is the same as the angle of the river bank slope, and the cover plate is sealed and connected to the right wall of the structure, the top of the vertical partition II, and the right wall of the aerobic chamber; the top of the cover plate is 10-20 cm lower than the top of the aerobic chamber.

8. The underground synchronous river sewage treatment and ecological bank protection structure according to claim 1 is characterized by: The ecological vegetation revetment area in the underground synchronous river sewage treatment and ecological revetment structure includes the area above the cover plate and the outer area of ​​the right wall of the structure. The area above the cover plate is covered with sand and pebbles, geotextiles, prefabricated concrete blocks, impact-resistant ecological blankets, and palm stones in sequence, and the prefabricated concrete blocks are filled with planting soil; The outer area of ​​the right wall of the structure contains dry-stone blocks and riverbed mud, which connects to the bottom of the riverbed.

9. The underground synchronous river sewage treatment and ecological bank protection structure according to claim 8 is characterized by: The concrete prefabricated blocks in the underground synchronous river sewage treatment and ecological bank protection structure are square or regular hexagonal, with a side length of 20-30 cm, a side thickness of 2-4 cm, and a height of 20-30 cm. A circular hole with a diameter of 3-5 cm is opened at the center of each side surface; the interior of the concrete prefabricated blocks is filled with planting soil and native bank protection plants are planted; dry stone masonry and riverbed mud areas are planted with emergent or submerged plants; The impact-resistant ecological blanket in the underground synchronous river sewage treatment and ecological bank protection structure is divided into four layers from bottom to top. The first layer is polyester composite fiber fabric, the second layer is polyester non-woven fabric filter layer, the third layer is grass seed and fertilizer layer; and the fourth layer is wood pulp composite fiber fabric.

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