CN210505956U

CN210505956U - Buried type synchronous river sewage treatment and ecological bank protection structure

Info

Publication number: CN210505956U
Application number: CN201921161892.8U
Authority: CN
Inventors: 季军远; 朱晓彤; 刘晓朋; 冯美军; 王维来; 田冬军; 韩冬青; 洪波
Original assignee: Ocean University of China
Current assignee: Ocean University of China
Priority date: 2019-07-23
Filing date: 2019-07-23
Publication date: 2020-05-12
Anticipated expiration: 2029-07-23

Abstract

The utility model provides a buried type synchronous river channel sewage treatment and ecological bank protection structure, the structure main body is a reinforced concrete structure or a steel type prefabricated member, can be buried in a river channel bank slope and is integrated with a river channel, and the structure is divided into an aerobic chamber, a transition chamber, an anaerobic chamber and an ecological vegetation bank protection area; wherein the aerobic chamber is positioned at the left side of the structure, and the transition chamber, the anaerobic chamber and the ecological vegetation bank protection zone are positioned at the right side of the structure; one part of the ecological vegetation bank protection area is positioned at the upper parts of the transition chamber and the anaerobic chamber, and the other part of the ecological vegetation bank protection area is positioned at the right side of the anaerobic chamber; the transition chamber is positioned on the left side of the anaerobic chamber; the transition chamber and the anaerobic chamber are sealed and covered by a cover plate. This bury formula synchronous river course sewage treatment and ecological revetment structure, possess ecological revetment function when can high-efficiently administering river course sewage, guarantee whole river course safety and stability, carry out ecological construction to the river course both sides simultaneously.

Description

Buried type synchronous river sewage treatment and ecological bank protection structure

Technical Field

The utility model relates to a microorganism, plant treatment river course sewage relate to the ecological bank protection of river, belong to river sewage treatment and river bank protection technical field, especially relate to a river course sewage treatment and ecological bank protection structures.

Background

In the rapid development of social economy and the steady promotion of urban progress, untreated production wastewater of part of enterprises and domestic sewage of part of coastal residents are directly or indirectly discharged into nearby rivers, so that the quality of river water flowing through urban areas is seriously polluted, and even the phenomenon of black and odorous water appears. The increasingly worsened water environment in urban areas seriously affects the urban environment quality and the daily life of coastal residents, and also restricts the sustainable and healthy development of social economy. Therefore, the comprehensive treatment of urban polluted rivers and the restoration of peripheral ecosystems become important problems to be solved in urban ecological construction.

For the treatment of river sewage, some processes have been developed and applied, such as constructing a recovery buffer zone, reducing river slopes, remodeling shoals and deep pools, artificial oxygenation, artificial floating islands, artificial wetlands and the like, but these methods have difficulty in achieving ideal treatment effects on heavily polluted river sewage. The biological-ecological method is a technology for transferring, converting and degrading pollutants in river sewage by utilizing cultivated plants and inoculated and cultivated microorganisms so as to purify polluted river water, has the advantages of good treatment effect, lower construction cost, low operation cost, no need of adding medicaments into a water body, no secondary pollution, capability of being fused with surrounding landscapes, creation of beautiful landscape environment and the like, and becomes a new favorite of river sewage treatment technology. However, how to solve the problems of serious loss of functional microorganisms, steady and increased biomass, environmental difference required by degradation of different pollutants and the like in river treatment by a biological-ecological method becomes the key to whether the technology can be successfully applied to river sewage treatment.

River bank protection is one of important works of city construction, more than the former adopts traditional hard bank protection technology, and this technology can satisfy needs such as flood control, shipping, but its main attention engineering structure security and durability of following, adopts traditional hard materials such as monotonous concrete, grout stone more, has neglected river bank ecological function, leads to ecological structure unbalance, and the ecosystem degradation, the self-cleaning ability of water reduces. The ecological bank protection is based on the functions and effects of the traditional bank protection, the ecological effect of the bank protection engineering is improved, the harmony and the common development among water, soil and organisms are realized, the high-quality natural environment state is constructed, the ecological bank protection has the ecological property, the landscape property and the permeability of the natural bank protection, the structural property and the stability of the hard bank protection, the self-maintenance and self-updating capacity of a river ecological system is improved, and the stability of the ecological system is improved, so that the ecological bank protection is the mainstream of the river regulation bank protection engineering.

SUMMERY OF THE UTILITY MODEL

The utility model discloses an aim at solving the river course sewage treatment technological effect that now extensively adopts unsatisfactory, and adopt biology-ecological sewage treatment technology seriously and the difficult problem of unable full play function because of biological loss in river course sewage treatment engineering, and all develop alone for solving current river course treatment in-process sewage treatment engineering and revetment engineering, directly lead to the engineering step repeatedly, the treatment cost is at high level not lower scheduling problem, consequently, put forward a formula of burying synchronous river course sewage treatment and ecological revetment structure, can effectively solve aforementioned problem, possess ecological revetment function when high-efficient treatment river course sewage, guarantee whole river course safety and stability, carry out ecological construction to the river course both sides simultaneously. The structure realizes respective physical spaces of microorganisms with different functions through compartmentalization design, can stably gather the microorganisms with different functions and realize relative independence and mutual noninterference of required environmental conditions, thereby exerting degradation functions of the structure on different pollutants to the maximum extent; the advantages of the original biological and ecological treatment technology are maintained to the maximum extent through the optimal matching between the biological and ecological treatment technologies; a method for combining hard structures such as sand pebbles, concrete prefabricated blocks, impact-resistant ecological blankets and revetment plants with vegetation is adopted to form an amphoteric circulation system of substances, information and energy among water, soil and organisms on the basis of ensuring the effects of slope stability, water erosion resistance and water and soil loss resistance, so that self organization and self restoration are performed, the revetment not only has a landscape effect, but also can restore polluted river water and improve the self-purification capacity of rivers, and further the health of a river ecological system is guaranteed.

In order to solve the technical problem, the utility model discloses a following technical scheme realizes:

a main body of a buried type synchronous river channel sewage treatment and ecological bank protection structure is of a reinforced concrete structure or a steel prefabricated member, can be buried in a river channel bank slope, is integrated with a river channel, and is landscape-coordinated. The structure is mainly divided into an aerobic chamber, a transition chamber, an anaerobic chamber and an ecological vegetation bank protection area. Wherein the aerobic chamber is positioned at the left side of the structure, and the transition chamber, the anaerobic chamber and the ecological vegetation bank protection zone are positioned at the right side of the structure; one part of the ecological vegetation bank protection area is positioned at the upper parts of the transition chamber and the anaerobic chamber, and the other part of the ecological vegetation bank protection area is positioned at the right side of the anaerobic chamber; the transition chamber is positioned on the left side of the anaerobic chamber; the transition chamber and the anaerobic chamber are sealed and covered by a cover plate.

The aerobic chamber comprises a rainwater grate, a water inlet pipe, a gravel layer, a bearing plate, fiber fillers and an aeration pipe I from top to bottom, and aerobic activated sludge is added into the aerobic chamber; the aerobic chamber is communicated with the transition chamber through a slit between the right wall body of the aerobic chamber and the bottom of a structure, a slit between the right wall body of the aerobic chamber and the vertical partition plate I, and a slit between the vertical partition plate I and the cover plate. The transition chamber is internally provided with an aerator pipe II and fiber fillers, the aerator pipe II is positioned at the lower left corner of the transition chamber, activated sludge is added into the transition chamber, and the transition chamber is communicated with the anaerobic chamber through a slit between the vertical partition plate II and a structure bottom, a slit between the vertical partition plate II and the vertical partition plate III, and a slit between the vertical partition plate III and the cover plate. The anaerobic chamber is internally provided with fiber filler and is added with anaerobic denitrification sludge which is communicated with the dry building block area through a water outlet pipe. The ecological vegetation bank protection area comprises sand cobbles, geotextile, concrete precast blocks, impact-resistant ecological blankets, palmstones, dry masonry blocks, planting soil, bank protection plants, emergent aquatic plants or submerged plants.

The buried type synchronous riverway sewage treatment and ecological bank protection structure is characterized in that the aerobic chamber, the transition chamber and the anaerobic chamber in the buried type synchronous riverway sewage treatment and ecological bank protection structure are equal in length and width.

The vertical partition plate I, the vertical partition plate II, the vertical partition plate III and the cover plate in the buried type synchronous riverway sewage treatment and ecological bank protection structure are all equal in width to the structure, the vertical partition plate I and the vertical partition plate III are hermetically connected with the bottom of the structure, a slit with the same width as the structure is reserved between the vertical partition plate I and the cover plate, and the height of the slit is 5-10 cm; the vertical partition plate II is in sealing joint with the cover plate, a slit with the same width as the structure is reserved at the bottom of the structure, and the height of the slit is 5-10 cm.

The length-width-height ratio of the aerobic chamber in the buried type synchronous riverway sewage treatment and ecological bank protection structure is 1 (3-5): 2-6, the aeration pipe I is positioned at the left lower corner of the aerobic chamber and laid along the width direction of the aerobic chamber, aeration round holes are formed in the aeration pipe I, the diameter of each round hole is 1-2 cm, and the aperture ratio is 0.3-0.5.

The rainwater grate in the buried type synchronous riverway sewage treatment and ecological bank protection structure is a top cover of an aerobic chamber, a water inlet pipe is positioned on the layer surface of a gravel layer, water distribution round holes are formed in the left side and the right side of the water inlet pipe, the diameter of each round hole is 1-1.5 cm, the thickness of the gravel layer is 15-20 cm, the particle size of gravel is 3-5 cm, a bearing plate at the bottom of the gravel layer is provided with a gap, the slotting rate is 0.5, the length of the gap is 8-12 cm, and the width of the gap is 2-4 cm.

The right side wall of the aerobic chamber in the buried type synchronous riverway sewage treatment and ecological bank protection structure is equal to the width of a slit at the bottom of the structure and the width of the aerobic chamber, the height of the slit is 5-10 cm, and the width of a gap between the right side wall of the aerobic chamber and the vertical partition plate I is 5-8 cm.

Wherein, the aeration pipe II in the buried type synchronous river sewage treatment and ecological revetment structure transition chamber is positioned at the lower left corner of the transition chamber and laid along the width direction of the transition chamber, and aeration round holes are formed in the aeration pipe II, the diameter of each round hole is 1cm, and the aperture ratio is 0.2-0.4.

The sludge added into the buried type synchronous riverway sewage treatment and ecological bank protection structure anaerobic chamber is anaerobic denitrification sludge.

The inclination angle of a cover plate in the buried type synchronous riverway sewage treatment and ecological bank protection structure is the same as the bank slope angle of the riverway, and the cover plate is hermetically connected with the right side wall of the structure, the top of the vertical partition plate II and the right side wall of the aerobic chamber; the top of the cover plate is 10-20 cm lower than the top of the aerobic chamber.

The ecological vegetation bank protection area in the buried type synchronous riverway sewage treatment and ecological bank protection structure comprises an area above a cover plate and an area outside a wall body on the right side of the structure. Sand pebbles, geotextile, concrete precast blocks, impact-resistant ecological blankets and palmstones are sequentially covered in the upper area of the cover plate, and planting soil is filled in the concrete precast blocks; the outer area of the right wall of the structure comprises dry stones and river sediment which are connected with the bottom of the river bed.

The concrete prefabricated blocks in the buried type synchronous riverway sewage treatment and ecological bank protection structures are square or regular hexagon, the side length is 20-30 cm, the side thickness is 2-4 cm, the height is 20-30 cm, round holes are formed in the center of each side face, and the diameter of each round hole is 3-5 cm. Filling planting soil in the concrete precast block and planting native bank protection plants; and (4) planting emergent or submerged plants in the dry building stone blocks and the bottom mud area of the river channel.

The buried type anti-impact ecological blanket for the synchronous river sewage treatment and ecological bank protection structure is divided into four layers from bottom to top, wherein the first layer is a polyester composite fiber fabric, the second layer is a polyester non-woven fabric reverse filter layer, and the third layer is a grass seed and fertilizer layer; the fourth layer is wood pulp composite fiber fabric.

Compared with the prior art, the utility model, its beneficial effect lies in with the advantage:

1) the river sewage treatment and the ecological bank protection of the river are synchronously realized. The structure can be optimally designed according to relevant size parameters of a riverway to be treated and then buried in a riverway bank slope to form a bypass biological purification system parallel to the riverway, so that the water quality of a riverway water body can be efficiently purified; meanwhile, the ecological vegetation revetment area of the structure has an ecological revetment function, the ecological structure of the river channel is restored while the structural property and stability of the revetment are realized, the natural landscape of the river channel can be seamlessly integrated, and the efficient pollution control and ecological revetment engineering are realized simultaneously.

2) The ecological function is integrated. The ecological vegetation bank protection area can solve the defect that the traditional bank protection isolates soil and water, maintain the unified integrity of the ecology of the bank and the river channel and complete the natural transition between water and land. And a good living environment is provided for some aquatic animals which need to forage and lay eggs to the shore, and the biodiversity is better maintained.

3) The water body self-purification function. When the land pollutant permeates into the water area, the plants and root microorganisms growing in the vegetation shore protection area can use the pollutant as a nutrient source, so that the pollutant removal effect is achieved, the diffusion of surface source pollution such as agricultural irrigation to rivers is reduced, and the risk of the polluted rivers is reduced. In addition, emergent or submerged plants growing in dry stones in the ecological vegetation bank protection area can absorb and utilize pollutants in river water, play a role in purifying river sewage, and can play a certain role in repairing polluted rivers, particularly urban inland rivers.

4) And the erosion of the bank slope and the soil loss are prevented. The selection of materials and materials of the ecological vegetation bank protection area, the structural form and the arrangement position can effectively prevent hydraulic erosion and soil loss. The geotextile and the concrete precast block can effectively prevent soil loss when rainwater seeps, and the sand gravel layer can enable rainwater to flow into a river channel along the structure cover plate quickly; the upper impact-resistant ecological blanket has strong impact resistance, the impact flow rate can reach 4m/s, and the upper impact-resistant ecological blanket can be combined with the palmitstone to prevent the surface soil from seriously losing under the condition of strong overflow.

5) High dirt-treating and shock-resisting power. The functional microorganisms can be fixedly gathered by fixing the working compartments of the functional microorganisms and arranging the fiber filler with high adhesion performance, so that the amount of the functional microorganisms is remarkably increased, and the bottleneck problems of serious loss and poor effect of the functional microorganisms in the conventional biological treatment process of the river sewage are solved; through the automatic setting of the aeration start-stop of the transition chamber, the flexible allocation of the volume of the aerobic zone and the volume of the anaerobic zone can be realized, so that the decontamination efficiency of microorganisms with unit functions is improved to the maximum extent. The difference between the water quality and the water quantity of the river channel in rainy and dry seasons is large, and the sewage treatment effect can be ensured under the severe fluctuation of the water quality and the water quantity by flexibly adjusting the high biological holding quantity in the structure and the aerobic and anaerobic functions of the transition chamber.

In the summary section a series of concepts in a simplified form is introduced, which will be described in further detail in the detailed description section. The summary of the invention is not intended to identify key features or essential features of the claimed subject matter, nor is it intended to be used as an aid in determining the scope of the claimed subject matter.

The advantages and features of the present invention are described in detail below with reference to the accompanying drawings.

Drawings

FIG. 1 is a schematic structural view of a buried type synchronous river sewage treatment and ecological bank protection structure;

FIG. 2 is a schematic structural view of a concrete precast block;

wherein: 1. an aerobic chamber; 2. a transition chamber; 3. an anaerobic chamber; 4. ecological vegetation shore protection areas; 5. a rainwater grate; 6. a water inlet pipe; 7. a gravel layer; 8. a support plate; 9. a fibrous filler; 10, an aeration pipe I; 11. a vertical partition plate I; 12. an aeration pipe II; 13. a vertical clapboard II; 14. a cover plate; 15. sand and pebbles; 16. geotextile; 17. concrete precast blocks; 18. planting soil; 19. an impact-resistant ecological blanket; 20. (ii) a palmite; 21. Revetment plants; 22. dry building stone blocks; 23. emerging or submerged plants; 24. a water outlet pipe; 25. and a vertical partition plate III.

Detailed Description

In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. It will be apparent, however, to one skilled in the art, that the present invention may be practiced without one or more of these specific details. In other instances, well-known features have not been described in order to avoid obscuring the present invention.

In the following description, a detailed structure will be presented for a thorough understanding of the present invention. It is apparent that the practice of the invention is not limited to the specific details known to those skilled in the art. The preferred embodiments of the present invention are described in detail below, however, other embodiments of the present invention are possible in addition to these detailed descriptions.

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

As shown in fig. 1-2, a main body of a buried type synchronous river sewage treatment and ecological bank protection structure is a reinforced concrete structure or a steel prefabricated member, can be buried in a bank slope of a river, is integrated with the river and is harmonious 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 shore protection area 4. Wherein the aerobic chamber 1 is positioned at the left side of the structure, and the transition chamber 2, the anaerobic chamber 3 and the ecological vegetation shore protection area 4 are positioned at the right side of the structure; a part of the ecological vegetation bank protection area 4 is positioned at the upper parts of the transition chamber 2 and the anaerobic chamber 3, and a part of the ecological vegetation bank protection area is positioned at the right side of the anaerobic chamber 3; the transition chamber 2 is positioned at the left side of the anaerobic chamber 3; the transition chamber 2 and the anaerobic chamber 3 are sealed and covered by a cover plate 14.

The aerobic chamber 1 comprises a rainwater grate 5, a water inlet pipe 6, a gravel layer 7, a supporting plate 8, fiber fillers 9 and an aeration pipe I10 from top to bottom respectively, and aerobic activated sludge is added into the aerobic chamber 1; the aerobic chamber 1 is communicated with the transition chamber 2 through a slit between the right wall body of the aerobic chamber 1 and the bottom of a structure, a slit between the right wall body of the aerobic chamber 1 and the vertical partition plate I11, and a slit between the vertical partition plate I11 and the cover plate 14. The transition chamber 2 comprises an aeration pipe II 12 and a fiber filler 9, the aeration pipe II 12 is positioned at the lower left corner of the transition chamber 2, activated sludge is added into the transition chamber 2, and the transition chamber 2 is communicated with the anaerobic chamber 3 through a slit between the vertical partition plate II 13 and the bottom of a structure, a slit between the vertical partition plate II 13 and the vertical partition plate III 25, and a slit between the vertical partition plate III 25 and the cover plate 14. The anaerobic chamber 3 is internally provided with fiber filler 9 and is added with anaerobic denitrification sludge which is communicated with the dry masonry block area 22 through a water outlet pipe 24. The ecological vegetation bank protection area 4 comprises sand pebbles 15, geotextiles 16, concrete precast blocks 17, impact-resistant ecological blankets 19, palmstones 20, dry masonry blocks 22, planting soil 18, bank protection plants 21 and emergent aquatic plants or submerged plants 23.

The utility model provides a bury formula synchronous river course sewage treatment and ecological revetment structures's working process as follows:

1) the river sewage treatment working process comprises the following steps: river sewage is pumped into the water inlet pipe 6 by the submersible pump and flows into the gravel layer 7 through the water distribution circular holes on the left side and the right side of the water inlet pipe 6, suspended matters in the sewage can be intercepted and removed by the gravel layer 7, meanwhile, the gravel layer 7 can break and disperse water flow, uniform water distribution to the aerobic chamber 1 is realized, the sewage enters the aerobic chamber 1 and then is in full mixing contact with air entering the aerobic chamber 1 through the aeration pipe I10 by the gas compressor, the air is attached to the fiber filler 9 and aerobic active sludge suspended in the aerobic chamber 1, the aerobic microorganisms can directly degrade organic matters in the sewage, phosphorus in the sewage is adsorbed and utilized, and ammonia nitrogen in the sewage is subjected to aerobic nitrification to generate nitrate. The sewage treated by the aerobic chamber 1 sequentially enters the transition chamber 2 through a slit between the right wall of the aerobic chamber 1 and the bottom of a structure, a slit between the right wall of the aerobic chamber 1 and the vertical partition plate I11, and a slit between the vertical partition plate I11 and the cover plate 14, the transition chamber 2 can adopt an aeration or aeration stopping operation mode according to the water quality condition of effluent, an aerobic environment and an anaerobic environment can be respectively formed in different modes, and the aerobic removal or anaerobic removal function of pollutants is realized under different working conditions. The sewage treated by the transition chamber 2 enters the anaerobic chamber 3 through a slit between the vertical partition plate II 13 and the bottom of the structure, a slit between the vertical partition plate II 13 and the vertical partition plate III 25, and a slit between the vertical partition plate III 25 and the cover plate 14, under the anaerobic condition, under the action of anaerobic denitrification sludge, nitrate nitrogen generated in the sewage under the aerobic condition is subjected to denitrification reaction to generate nitrogen, and in the process, residual organic matters in the sewage are used as a carbon source to remove nitrogen pollutants and further degrade the organic matters. A small amount of nitrogen and phosphorus pollutants which are remained after degradation in the anaerobic chamber 3 enter the dry masonry blocks 22 and the river bed bottom mud area of the ecological plant shore protection area 4 through the water outlet pipe 24 and contact with emergent water or submerged plant root systems in the area, the remained nitrogen and phosphorus are further absorbed and utilized under the action of the root systems and root system microorganisms, and river sewage enters the river water body again after being purified.

After the non-point source sewage and other types of sewage flowing along the bank slope enter the ecological vegetation bank protection area 4, the ecological vegetation bank protection area 4 can enable the pollution reduction function similar to that of an artificial wetland, pollutants in the sewage can be intercepted by physical adsorption, biodegraded and absorbed and utilized by root systems in the process of flowing through planting soil 18, bank protection plants 21, geotextile 16 and sand pebbles 15, so that the pollutants can be degraded and removed, and the purified sewage finally enters a river water body through an opening on a concrete prefabricated part 17 or gaps of the sand pebbles 15.

2) According to the river bank ecological bank protection principle, both a riparian plant 21 and an impact-resistant ecological blanket 19 on the upper layer of a ① ecological vegetation bank protection area 4 can grow a bank protection plant, planting soil 18 is filled in a concrete prefabricated block 17, a powerful growing environment is provided for the growth of the bank protection plant 21, a natural vegetation community structure is established by combining wild local soil plants, trees, shrubs and grasses, a biological habitat is established, developed root systems of the plants can enhance the water storage and soil fixing capacity of the bank, the water and soil conservation and erosion prevention capacity are enhanced, a good landscape effect can be formed, the landscape value and the protection value are achieved, ② palmstones 20 and a large number of vegetation can effectively reduce the erosion of wind and rain on the soil surface and slow down the erosion of rainwater, river water and the like on the soil, ③ sand pebbles 15, the perforated concrete prefabricated block 17 and the palmstones 20 can ensure the mutual relation among water, soil and gas and maintain the transverse connectivity of a river, ④ impact-resistant ecological blanket 19 and a geotextile 16 have the functions of filtering water permeation and soil loss, can realize the communication of water in the soil, the regular stone communication with the stone blocks in the river bed, and provide a good river course for the regular and the regular river bed soil for the maintenance of the amphibious animal-laid water-laid river-laid ecological vegetation.

The embodiments described in this specification are merely illustrative of implementations of the inventive concepts, and the scope of the invention should not be considered to be limited to the specific forms set forth in the embodiments. It should be understood that modifications and variations can be resorted to by those skilled in the art, as those skilled in the art readily understand, and that such equivalents are intended to be encompassed by the scope of the invention as those skilled in the art recognize in light of the teachings of the invention.

Claims

1. The utility model provides a bury synchronous river course sewage treatment of formula and ecological revetment structure which characterized in that: the main body of the structure is a reinforced concrete structure or a steel type prefabricated member, can be buried in a bank slope of a river channel and is integrated with the river channel, and the structure is divided into an aerobic chamber, a transition chamber, an anaerobic chamber and an ecological vegetation bank protection area; wherein the aerobic chamber is positioned at the left side of the structure, and the transition chamber, the anaerobic chamber and the ecological vegetation bank protection zone are positioned at the right side of the structure; one part of the ecological vegetation bank protection area is positioned at the upper parts of the transition chamber and the anaerobic chamber, and the other part of the ecological vegetation bank protection area is positioned at the right side of the anaerobic chamber; the transition chamber is positioned on the left side of the anaerobic chamber; the transition chamber and the anaerobic chamber are sealed and covered by a cover plate.

2. The buried type synchronous riverway sewage treatment and ecological bank protection structure as claimed in claim 1, wherein: the aerobic chamber comprises a rainwater grate, a water inlet pipe, a gravel layer, a bearing plate, fiber fillers and an aeration pipe I from top to bottom, and aerobic activated sludge is added into the aerobic chamber; the aerobic chamber is communicated with the transition chamber through a slit between the right wall body of the aerobic chamber and the bottom of a structure, a slit between the right wall body of the aerobic chamber and the vertical partition plate I, and a slit between the vertical partition plate I and the cover plate; the transition chamber comprises an aeration pipe II and fiber fillers, the aeration pipe II is positioned at the lower left corner of the transition chamber, activated sludge is added into the transition chamber, and the transition chamber is communicated with the anaerobic chamber through a slit between the vertical partition plate II and the bottom of a structure, a slit between the vertical partition plate II and the vertical partition plate III, and a slit between the vertical partition plate III and a cover plate; a fiber filler is arranged in the anaerobic chamber, anaerobic denitrification sludge is added, and the anaerobic chamber is communicated with the dry masonry block area through a water outlet pipe; the ecological vegetation bank protection area comprises sand pebbles, geotextiles, concrete prefabricated blocks, impact-resistant ecological blankets, palmstones, dry masonry blocks, planting soil, bank protection plants, emergent aquatic plants or submerged plants.

3. The buried type synchronous riverway sewage treatment and ecological bank protection structure as claimed in claim 1, wherein: the buried type synchronous river sewage treatment and ecological bank protection structure is equal in length and width of an aerobic chamber, a transition chamber and an anaerobic chamber.

4. The buried type synchronous riverway sewage treatment and ecological bank protection structure as claimed in claim 2, wherein: the vertical partition plate I, the vertical partition plate II, the vertical partition plate III and the cover plate in the buried type synchronous riverway sewage treatment and ecological bank protection structure are all equal in width to the structure, the vertical partition plate I and the vertical partition plate III are hermetically connected with the bottom of the structure, a slit with the same width as the structure is reserved between the vertical partition plate I and the cover plate, and the height of the slit is 5-10 cm; the vertical partition plate II is in sealing joint with the cover plate, a slit with the same width as the structure is reserved at the bottom of the structure, and the height of the slit is 5-10 cm.

5. The buried type synchronous riverway sewage treatment and ecological bank protection structure as claimed in claim 2, wherein: the length-width-height ratio of the aerobic chamber in the buried type synchronous riverway sewage treatment and ecological bank protection structure is 1 (3-5): 2-6, the aeration pipe I is positioned at the left lower corner of the aerobic chamber and laid along the width direction of the aerobic chamber, aeration round holes are formed in the aeration pipe I, the diameter of each round hole is 1-2 cm, and the aperture ratio is 0.3-0.5.

6. The buried type synchronous riverway sewage treatment and ecological bank protection structure as claimed in claim 2, wherein: the rainwater grate in the buried type synchronous riverway sewage treatment and ecological bank protection structure is a top cover of an aerobic chamber, a water inlet pipe is positioned on the layer surface of a gravel layer, water distribution round holes are formed in the left side and the right side of the water inlet pipe, the diameter of each round hole is 1-1.5 cm, the thickness of the gravel layer is 15-20 cm, the particle size of gravel is 3-5 cm, a bearing plate at the bottom of the gravel layer is provided with a gap, the slotting rate is 0.5, the length of the gap is 8-12 cm, and the width of the gap is 2-4 cm;

the right side wall of the aerobic chamber in the buried type synchronous riverway sewage treatment and ecological bank protection structure is as wide as a slit at the bottom of the structure and the aerobic chamber, the height of the slit is 5-10 cm, and the width of a gap between the right side wall of the aerobic chamber and the vertical partition plate I is 5-8 cm;

the aeration pipe II is arranged at the lower left corner of the transition chamber and laid along the width direction of the transition chamber in the buried type transition chamber of the synchronous river sewage treatment and ecological revetment structure, and aeration round holes are formed in the aeration pipe II, the diameter of each round hole is 1cm, and the aperture ratio is 0.2-0.4.

7. The buried type synchronous riverway sewage treatment and ecological bank protection structure as claimed in claim 2, wherein: the sludge added into the buried type synchronous riverway sewage treatment and ecological bank protection structure anaerobic chamber is anaerobic denitrification sludge.

8. The buried type synchronous riverway sewage treatment and ecological bank protection structure as claimed in claim 2, wherein: the inclination angle of a cover plate in the buried type synchronous river channel sewage treatment and ecological bank protection structure is the same as the bank slope angle of the river channel, and the cover plate is hermetically connected with the right side wall body of the structure, the top of the vertical partition plate II and the right side wall body of the aerobic chamber; the top of the cover plate is 10-20 cm lower than the top of the aerobic chamber.

9. The buried type synchronous riverway sewage treatment and ecological bank protection structure as claimed in claim 2, wherein: the ecological vegetation bank protection area in the buried type synchronous riverway sewage treatment and ecological bank protection structure comprises an area above a cover plate and an area outside a wall body on the right side of the structure, wherein sand and pebbles, geotextile, a concrete precast block, an anti-impact ecological blanket and palmstone are sequentially covered on the area above the cover plate, and planting soil is filled in the concrete precast block; the outer area of the right wall of the structure comprises dry stones and river sediment which are connected with the bottom of the river bed.

10. The buried type synchronous riverway sewage treatment and ecological bank protection structure as claimed in claim 9, wherein: the concrete prefabricated blocks in the buried type synchronous riverway sewage treatment and ecological bank protection structure are square or regular hexagon, the side length is 20-30 cm, the side thickness is 2-4 cm, the height is 20-30 cm, circular holes are formed in the center of each side surface, and the diameter of each circular hole is 3-5 cm; filling planting soil in the concrete precast block and planting native bank protection plants; planting emergent or submerged plants in the dry building stone and the bottom mud area of the river channel;

the buried type synchronous riverway sewage treatment and anti-impact ecological blanket in the ecological bank protection structure is divided into four layers from bottom to top, wherein the first layer is a polyester composite fiber fabric, the second layer is a polyester non-woven fabric reverse filter layer, and the third layer is a grass seed layer and a fertilizer layer; the fourth layer is wood pulp composite fiber fabric.