Multi-stage blocking structure for river regulation and rainwater washing silt and solid waste

Abstract

The multi-stage blocking structure comprises a slope body located beside the river channel, a drainage channel is formed in the top of the slope body, and a plurality of drainage covers which are evenly arranged are arranged at the top of the drainage channel. Through a multi-stage filtering structure of the drainage cover, the filtering box, the folding filtering membrane, the filtering plate and the purifying plate, and by matching with a protective grating of a drainage opening, stepped interception and purification from large-volume garbage to tiny silt and organic matters are realized: firstly, large garbage such as branches and plastic bags is intercepted by a clamping plate filtering opening, and then medium impurities are filtered out by filtering holes of the filtering box; sediment is subsequently filtered through the folded filter membrane and the filter plate, finally peculiar smell and organic matter are adsorbed through the purification plate, and compared with an existing single filter structure, the filter precision is higher, the adaptive scene is wider, and pollutants entering a river channel can be effectively reduced.

Description

Technical Field

[0001] This invention relates to the field of river management and rainwater runoff silt removal technology, specifically a multi-level barrier structure for river management and rainwater runoff silt and solid waste removal. Background Technology

[0002] In the treatment of river water pollution, external pollution is the core issue affecting water quality, and rainwater is one of the main carriers of external pollution. On the one hand, rainwater has a strong adsorption capacity, especially in industrial areas, where it easily adsorbs harmful gases such as sulfur dioxide from the air and pollutants remaining on the ground. When this polluted rainwater flows directly into rivers, it not only disrupts the chemical balance of the water and reduces water quality, but also poses a serious threat to the survival environment of aquatic plants and animals in the river, and even affects the stability of the ecosystem through the food chain. On the other hand, during rainfall, rainwater washes away the surface, carrying solid impurities such as silt, household garbage (such as plastic bags and branches), and industrial waste into the river. This leads to turbidity and siltation in the river, affecting the river's flood control capacity and further exacerbating eutrophication due to the decomposition of impurities, forming a vicious cycle of "pollution-siltation-re-pollution".

[0003] To alleviate the aforementioned problems, some treatment methods have been proposed in existing technologies. For example, installing filter plates at the end of urban rainwater harvesting networks can trap some garbage and other items in rainwater. Another example is planting reeds and other aquatic plants along riverbanks, using their root systems to stabilize the soil and provide ecological slope protection. Simultaneously, the physical barrier effect of the plant community intercepts silt and solid waste carried by rainwater runoff. However, existing technologies still have significant shortcomings: single-network membrane filtration can only target rainwater collected by the network and cannot cover rainwater runoff pollution in areas without networks, such as slopes and riverbanks. Furthermore, simple plant slope protection and barrier methods have limited interception capacity for large-particle solid waste and are greatly affected by seasons and climate, making it difficult to achieve stable and efficient pollution interception. In addition, existing technologies lack a tiered treatment design for rainwater pollution, failing to perform graded filtration based on impurity particle size and pollutant type, resulting in a difficulty in balancing filtration accuracy and efficiency. They also fail to consider the pollution differences in different scenarios (such as residential areas and industrial areas), leading to poor adaptability.

[0004] Therefore, a multi-stage barrier structure is needed to address the problem of rainwater runoff and solid waste in river management. Summary of the Invention

[0005] To address the problems mentioned in the background art, the present invention aims to provide a multi-stage barrier structure for river management that removes rainwater runoff and solid waste. This structure achieves a synergistic effect of "multi-stage filtration + ecological protection" and is adaptable to river management structures in different pollution scenarios, thus solving the problem of rainwater carrying pollutants and solid impurities into rivers.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a multi-stage barrier structure for river channel management to prevent rainwater runoff and siltation and solid waste, comprising a slope located beside a river, a drainage ditch being provided at the top of the slope, a plurality of evenly arranged drainage covers being provided at the top of the drainage ditch, a drainage channel being provided at the end of the drainage ditch and located on the side closer to the river, a filter tank being connected to the other end of the drainage channel, a multi-stage filtration mechanism being provided inside the filter tank, a drainage outlet being provided on the side of the filter tank closer to the river, and a planting area being fixedly connected to the top of the slope;

[0007] The multi-stage filtration mechanism includes multiple evenly arranged drain pipes. The other end of each drain pipe is provided with a threaded opening. The bottom of the threaded opening is connected to a folded filter membrane. The filter tank is provided with a filter plate and a purification plate from the inside to the outside. Both sides of the filter plate and the purification plate are slidably connected to a connecting block, and the other end of the connecting block is fixedly connected to the filter tank.

[0008] The planting area includes a planting trough, which is located at the top of the slope. A gravel layer is fixedly connected to the bottom of the planting trough. A fine sand layer is laid on top of the gravel layer. A nutrient soil layer is laid on top of the fine sand layer. A planting soil layer is laid on top of the nutrient soil layer.

[0009] As a preferred embodiment of the present invention, the inner wall of the drainage ditch is symmetrically and fixedly connected with a bearing strip, and the bearing strip cooperates with the drainage cover. The top of the bearing strip is fixedly connected with a number of evenly arranged partition strips, and the partition strips are arranged alternately with a number of drainage covers.

[0010] As a preferred embodiment of the present invention, the top of the drain cover is provided with a snap-fit ​​interface, the inside of which a filter box is snapped into the snap-fit ​​interface, the bottom of the filter box is provided with a plurality of evenly arranged filter holes, the top of the snap-fit ​​interface is provided with a snap-fit ​​plate, and the top of the snap-fit ​​plate is provided with a plurality of evenly arranged filter openings.

[0011] In a preferred embodiment of the present invention, a support plate is fixedly connected to the wall of the filter tank, and a plurality of support openings are provided on the surface of the support plate, and the plurality of support openings are engaged with the drain pipe. A positioning plate is fixedly connected to the wall of the filter tank, and a plurality of evenly arranged threaded openings are provided at the bottom of the positioning plate, and the plurality of threaded openings are engaged with a plurality of folded filter membranes respectively. A cap is threadedly connected to the bottom of the threaded openings, and the cap is engaged with the folded filter membrane.

[0012] As a preferred embodiment of the present invention, the top of the drainage ditch is provided with a connecting port, and the connecting port is located directly above the drain outlet. A drain valve with remote control and Beidou positioning functions is fixedly connected inside the connecting port.

[0013] As a preferred embodiment of the present invention, the gravel layer is provided with permeable strips inside, the top of the planting soil layer is covered with a layer of expanded clay granules, and the top of the planting area is fixedly connected with a reinforcing net.

[0014] As a preferred embodiment of the present invention, a protective grille is installed inside the drain outlet, and a maintenance plate is hinged to the top of the filter tank.

[0015] As a preferred embodiment of the present invention, a rainproof strip is fixedly connected between the drainage ditch and the planting area.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0017] 1. This invention utilizes a multi-stage filtration structure consisting of a drainage cover, a filter box, a pleated filter membrane, a filter plate, and a purification plate, combined with a protective grille at the drainage outlet, to achieve a step-by-step interception and purification of everything from large-volume garbage to tiny silt and organic matter: first, large garbage such as tree branches and plastic bags are intercepted by the filter plate's filter outlet; then, medium-sized impurities are filtered out by the filter box's filter holes; subsequently, silt is filtered out by the pleated filter membrane and filter plate; and finally, odors and organic matter are adsorbed by the purification plate. Compared to existing single-stage filtration structures, this invention offers higher filtration precision, is more adaptable to various scenarios, and can effectively reduce pollutants entering waterways.

[0018] 2. This invention utilizes a composite structure consisting of a reinforcing mesh, a ceramsite layer, a planting soil layer, a nutrient soil layer, a fine sand layer, and a gravel layer in the planting area. Combined with a rainproof strip and a drainage ditch, the reinforcing mesh and ceramsite layer prevent soil erosion, the permeable strips in the gravel layer accelerate drainage and prevent root rot, the rainproof strips prevent rainwater from splashing onto the planting area, and the load-bearing strips and separators facilitate the disassembly and maintenance of the drainage cover. A remotely controlled drainage valve allows for emergency diversion. Compared to existing technologies that only focus on filtration or slope protection, this invention achieves an integrated function of "rainwater filtration - slope stabilization - emergency drainage - convenient maintenance," resulting in greater efficiency and practicality. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the present invention;

[0020] Figure 2 This is a three-dimensional schematic diagram of the drainage cover, filter plate, and purification plate of the present invention during maintenance.

[0021] Figure 3 This is a partial three-dimensional cross-sectional view of the planting area of ​​the present invention;

[0022] Figure 4This is a partial cross-sectional perspective view of the structure of the present invention;

[0023] Figure 5 This is a three-dimensional schematic diagram of the drainage pipe and pleated filter membrane used in conjunction with the present invention;

[0024] Figure 6 This is a three-dimensional schematic diagram of the reinforcing mesh of the present invention.

[0025] In the diagram: 1. Slope; 2. Drainage ditch; 3. Drainage cover; 4. Drainage channel; 5. Filter tank; 6. Drainage outlet; 7. Multi-stage filtration mechanism; 8. Planting area; 9. Drainage valve; 10. Protective grille; 11. Rain guard strip; 21. Bearing strip; 22. Separator strip; 31. Clip interface; 32. Filter box; 33. Filter hole; 34. Clip plate; 35. Filter port; 71. Drainage pipe; 72. Folded filter membrane; 73. Filter plate; 74. Purification plate; 75. Connecting block; 76. Support plate; 77. Positioning plate; 78. Threaded port; 79. Cover; 710. Maintenance plate; 81. Planting trough; 82. Gravel layer; 83. Fine sand layer; 84. Nutrient soil layer; 85. Planting soil layer; 86. Ceramsite layer; 87. Reinforcing mesh. Detailed Implementation

[0026] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] like Figures 1 to 6 As shown, the present invention provides a multi-stage barrier structure for river management to prevent rainwater runoff and silt and solid waste. It includes a slope 1 located beside the river, a drainage ditch 2 at the top of the slope 1, a number of evenly arranged drainage covers 3 at the top of the drainage ditch 2, a drainage channel 4 at the end of the drainage ditch 2, and the drainage channel 4 is located on the side close to the river. The other end of the drainage channel 4 is connected to a filter tank 5. The filter tank 5 is equipped with a multi-stage filtration mechanism 7. A drainage outlet 6 is located on the side of the filter tank 5 close to the river. A planting area 8 is fixedly connected to the top of the slope 1.

[0028] The multi-stage filtration mechanism 7 includes multiple evenly arranged drain pipes 71. The other end of each drain pipe 71 has a threaded opening 78, and the bottom of the threaded opening 78 is connected to a pleated filter membrane 72. The pleated filter membrane 72 can effectively intercept harmful substances (containing sulfur dioxide, etc.) in rainwater, preventing river water pollution. Inside the filter tank 5, from the inside out, are arranged filter plates 73 and purification plates 74. Connecting blocks 75 are slidably connected to both sides of the filter plates 73 and 74, and the other end of the connecting blocks 75 is fixedly connected to the filter tank 5. The filter plates 73 can be made of PP or PVC injection-molded sheets (with reinforcing ribs on the surface). Their advantages include acid and alkali resistance, light weight, low cost, suitability for intercepting large particles of silt and garbage, and ease of disassembly and cleaning. For cleaning, we recommend 304 / 316 stainless steel perforated plates (high strength, impact resistance, and able to withstand rainwater erosion, suitable for scenarios where garbage contains sharp impurities, but requires regular rust prevention and maintenance) or glass fiber reinforced plastic plates (combining the corrosion resistance of plastics and the strength of metals, and rust-free, corrosion-resistant and maintenance-free, suitable for long-term immersion in humid environments); Purification plates 74 can be made of, but are not limited to, activated carbon composite plates (adsorbing small organic matter such as fallen leaf humus and odors in rainwater, improving the water quality at river inlets), quartz sand zeolite composite plates (filtering small silt and adsorbing ammonia nitrogen), or biological ceramic granule plates (aiding in the degradation of organic pollutants in water, and resistant to aging, requiring no frequent replacement, thus requiring no long-term maintenance; natural materials, therefore environmentally friendly).

[0029] It should be noted that if the river is surrounded by residential areas (where the garbage is mostly household plastics and fallen leaves): PP injection molded board for filter plate 73 and activated carbon composite board for purification board 74; if the river is surrounded by industrial areas / suburbs (where the garbage contains sharp impurities and a large amount of silt): 304 stainless steel perforated plate for filter plate 73 and quartz sand zeolite composite board for purification board 74; if long-term maintenance-free operation is required and environmental protection is emphasized: glass fiber reinforced plastic board for filter plate 73 and bio-ceramic granule board for purification board 74.

[0030] The planting area 8 includes a planting trough 81, which is located at the top of the slope 1. A gravel layer 82 is fixedly connected to the bottom of the planting trough 81. A fine sand layer 83 is laid on top of the gravel layer 82. A nutrient soil layer 84 is laid on top of the fine sand layer 83. The nutrient soil layer 84 can increase the fertility of the planting trough 81, making the plants grow better. A planting soil layer 85 is laid on top of the nutrient soil layer 84.

[0031] refer to Figure 2 The inner wall of the drainage ditch 2 is symmetrically and fixedly connected with a bearing strip 21, and the bearing strip 21 cooperates with the drainage cover 3. The top of the bearing strip 21 is fixedly connected with several evenly arranged partition strips 22, and the partition strips 22 are arranged alternately with several drainage covers 3.

[0032] As a technical optimization of the present invention, the support strip 21 enables stable support and quick assembly / disassembly of the drainage cover 3, and the partition strip 22 limits the spacing of adjacent drainage covers 3 to prevent the drainage cover 3 from shifting due to rainwater impact. At the same time, it facilitates the individual disassembly of a drainage cover 3 for local maintenance.

[0033] refer to Figure 2 and Figure 4 The top of the drain cover 3 is provided with a snap-fit ​​interface 31, and a filter box 32 is snapped into the inside of the snap-fit ​​interface 31. The bottom of the filter box 32 is provided with several evenly arranged filter holes 33. The top of the snap-fit ​​interface 31 is provided with a snap-fit ​​plate 34, and the top of the snap-fit ​​plate 34 is provided with several evenly arranged filter openings 35.

[0034] As a technical optimization of the present invention, the filter port 35 of the card plate 34 first intercepts large-volume solid waste (such as branches and plastic bags) carried by rainwater, and then filters medium-sized impurities through the filter holes 33 of the filter box 32. The dual filtration can reduce the burden on the subsequent multi-stage filtration mechanism 7, and the snap-fit ​​design of the filter box 32 makes it easy to remove and clean regularly.

[0035] refer to Figure 4 and Figure 5 A support plate 76 is fixedly connected to the wall of the filter tank 5. The surface of the support plate 76 has several support openings, and the several support openings are snapped into the drain pipe 71. A positioning plate 77 is fixedly connected to the wall of the filter tank 5. The bottom of the positioning plate 77 has several evenly arranged threaded openings 78, and the several threaded openings 78 are snapped into several pleated filter membranes 72 respectively. The bottom of the threaded openings 78 is threadedly connected to a cap 79, and the cap 79 is snapped into the pleated filter membrane 72.

[0036] As a technical optimization of the present invention, the drainage pipe 71 is fixed by the support port of the support plate 76 to ensure that rainwater is stably introduced into the folded filter membrane 72; the threaded port 78 of the positioning plate 77 cooperates with the cap 79 to realize the detachable fixing of the folded filter membrane 72, which is convenient for replacement after the filter membrane is blocked. At the same time, the folded structure can increase the filtration area and improve the filtration efficiency of sediment.

[0037] refer to Figure 4 The top of the drainage ditch 2 is provided with a connecting port, which is located directly above the drainage outlet 6. A drainage valve 9 with remote control and Beidou positioning function is fixedly connected inside the connecting port.

[0038] As a technical optimization of the present invention, the device location information is obtained in real time through Beidou positioning. Combined with the remote control function, the drainage valve 9 can be remotely opened in extreme weather such as rainstorms, so as to realize the direct connection between the drainage ditch 2 and the drainage outlet 6, quickly divert rainwater to avoid water accumulation and overflow in the drainage ditch 2, and improve the device's emergency drainage capacity.

[0039] refer to Figure 3 The gravel layer 82 has permeable strips inside, the top of the planting soil layer 85 is covered with a ceramsite layer 86, and the top of the planting area 8 is fixedly connected with a reinforcing net 87, which can reinforce the planting trough 81 and prevent soil erosion.

[0040] As a technical optimization of the present invention, the drainage performance of the planting area 8 is improved by the gravel layer 82 and the internal permeable strips, so as to avoid soil water accumulation and root rot of plants; the expanded clay layer 86 can reduce the direct erosion of the planting soil layer 85 by rainwater, reduce soil loss, and play an aesthetic role; the reinforcing net 87 further fixes the surface soil and vegetation roots, and enhances the erosion resistance of the top of the slope 1.

[0041] refer to Figure 2 and Figure 4 The drain outlet 6 is equipped with a protective grille 10, and the top of the filter tank 5 is hinged with a maintenance plate 710.

[0042] As a technical optimization of the present invention, the protective grille 10 prevents aquatic organisms or floating objects in the river from entering the filter tank 5 and clogging the drain outlet 6, while also preventing filtered impurities from flowing back into the river. The hinged maintenance plate 710 can be opened at any time, which facilitates the inspection, cleaning or replacement of parts of the multi-stage filtration mechanism 7 inside the filter tank 5.

[0043] refer to Figure 1 and Figure 2 A rainproof strip 11 is fixedly connected between the drainage ditch 2 and the planting area 8.

[0044] As a technical optimization of the present invention, the rain guard strip 11 prevents rainwater in the drainage ditch 2 from splashing onto the edge of the planting area 8, thereby preventing rainwater from washing away the soil on the side of the planting area 8 close to the drainage ditch 2 and preventing soil particles in the planting area 8 from being washed into the drainage ditch 2 by rainwater, thus reducing the source of impurities.

[0045] The working principle and usage process of this invention: When using this multi-stage barrier structure for river channel management to control rainwater runoff and siltation and solid waste, some of the rainwater falling on the top of the slope 1 will flow to the planting area 8. The rainwater passes through the reinforcing net 87 at the top of the planting area 8, and then through the expanded clay layer 86 to reduce direct erosion of the planting soil layer 85. It then permeates through the planting soil layer 85, the nutrient soil layer 84, and the fine sand layer 83 in sequence, finally reaching the gravel layer 82. The permeable strips inside the gravel layer 82 will quickly drain the rainwater, preventing water accumulation in the planting trough 81. At the same time, the rain-blocking strips 11 will prevent rainwater in the drainage ditch 2 from splashing into the planting area 8. The edges are designed to prevent soil from the planting area 8 from being washed into the drainage ditch 2; another portion of rainwater flows into the drainage ditch 2, first falling onto the drainage cover 3, where it is initially intercepted by the filter opening 35 at the top of the clamp plate 34 for large solid waste. Then, the rainwater enters the filter box 32 inside the clamp interface 31, where medium-sized impurities are filtered through the filter holes 33 at the bottom of the filter box 32 before entering the drainage ditch 2. The bearing strip 21 on the inner wall of the drainage ditch 2 provides stable support for the drainage cover 3, while the separating strip 22 limits the spacing between adjacent drainage covers 3 to prevent them from shifting due to rainwater impact. The rainwater entering the drainage ditch 2 flows into the filter through the drainage channel 4. Rainwater is introduced into the filtration tank 5 via a drain pipe 71 fixed to the support opening on the surface of the support plate 76. The rainwater flows from the threaded opening 78 at the end of the drain pipe 71 to the pleated filter membrane 72 for filtration. The pleated filter membrane 72 effectively traps harmful substances (including sulfur dioxide, etc.) in the rainwater, preventing river pollution. The threaded opening 78 at the bottom of the positioning plate 77, in conjunction with the cap 79, secures the pleated filter membrane 72. The filtered rainwater continues to flow into the filtration tank 5, where filter plates 73 and purification plates 74 are arranged sequentially from the inside out. Filter plates 73 and purification plates 74 are fixed to the filtration tank 5 via connecting blocks 75 that slide on both sides. The system filters and purifies rainwater, which is then discharged into the river through drain outlet 6. The protective grille 10 inside drain outlet 6 prevents aquatic organisms or floating objects from entering the filter tank 5. In case of extreme weather such as heavy rain, the drain valve 9 in the top connection of the drainage ditch 2 can be opened remotely, allowing rainwater to flow directly through the drain valve 9 to the drain outlet 6 for discharge, thus preventing the drainage ditch 2 from overflowing. During maintenance, the maintenance plate 710 hinged to the top of the filter tank 5 can be opened to inspect, clean, or replace parts of the multi-stage filtration mechanism 7 inside the filter tank 5. Alternatively, a single drain cover 3 can be removed to clean the filter box 32.

[0046] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0047] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A multi-stage barrier structure for riverway management of rainwater scouring silt and solid waste, comprising a slope body (1) located beside a riverway, characterized in that: The top of the slope body (1) is provided with a drainage ditch (2), the top of the drainage ditch (2) is provided with a plurality of uniformly arranged drainage covers (3), the end of the drainage ditch (2) is provided with a drainage channel (4), the drainage channel (4) is arranged on the side close to the river, the other end of the drainage channel (4) is communicated with a filtering tank (5), the inside of the filtering tank (5) is provided with a multi-stage filtering mechanism (7), the side of the filtering tank (5) close to the river is provided with a drainage port (6), and the top of the slope body (1) is fixedly connected with a planting area (8). The multi-stage filtering mechanism (7) comprises a plurality of uniformly arranged drainage pipes (71), the other end of the drainage pipe (71) is provided with a threaded opening (78), the bottom of the threaded opening (78) is communicated with a folding filter membrane (72), the inside of the filtering tank (5) is sequentially provided with a filter plate (73) and a purification plate (74) from inside to outside, and the two sides of the filter plate (73) and the purification plate (74) are slidably connected with connecting blocks (75), and the other end of the connecting block (75) is fixedly connected with the filtering tank (5). The planting area (8) comprises a planting groove (81), the planting groove (81) is arranged on the top of the slope body (1), the groove bottom of the planting groove (81) is fixedly connected with a gravel layer (82), the top of the gravel layer (82) is paved with a fine sand layer (83), the top of the fine sand layer (83) is paved with a nutrient soil layer (84), and the top of the nutrient soil layer (84) is paved with a planting soil layer (85).

2. The multi-stage rainwater scouring sediment and solid waste blocking structure for river management according to claim 1, characterized in that: The inner wall of the drainage ditch (2) is fixedly connected with a bearing strip (21) in a symmetrical manner, and the bearing strip (21) cooperates with the drainage cover (3), the top of the bearing strip (21) is fixedly connected with a plurality of uniformly arranged separation strips (22), and the plurality of separation strips (22) are alternately arranged with the plurality of drainage covers (3) respectively.

3. The multi-stage rainwater scouring sediment and solid waste blocking structure for river management according to claim 2, characterized in that: The top of the drainage cover (3) is provided with a clamping opening (31), the inside of the clamping opening (31) is clamped with a filter box (32), the bottom of the filter box (32) is provided with a plurality of uniformly arranged filter holes (33), the top of the clamping opening (31) is provided with a clamping plate (34), and the top of the clamping plate (34) is provided with a plurality of uniformly arranged filter openings (35).

4. The multi-stage rainwater runoff sediment and solid waste blocking structure for river management according to claim 3, characterized in that: The groove wall of the filtering tank (5) is fixedly connected with a supporting plate (76), the surface of the supporting plate (76) is provided with a plurality of supporting openings, and the plurality of supporting openings are clamped with the drainage pipes (71), the groove wall of the filtering tank (5) is fixedly connected with a positioning plate (77), the bottom of the positioning plate (77) is provided with a plurality of uniformly arranged threaded openings (78), and the plurality of threaded openings (78) are clamped with the plurality of folding filter membranes (72) respectively, the bottom of the threaded opening (78) is threadedly connected with a cover (79), and the cover (79) is clamped with the folding filter membrane (72).

5. The riverway management rainwater scouring sediment and solid waste multi-stage blocking structure according to claim 4, characterized in that: The top of the drainage ditch (2) is provided with a communication opening, and the communication opening is located directly above the drainage port (6), and the inside of the communication opening is fixedly connected with a drainage valve (9) with remote control and Beidou positioning function.

6. The riverway management rainwater scouring sediment and solid waste multi-stage blocking structure according to claim 5, characterized in that: The inside of the gravel layer (82) is provided with water permeable strips, the top of the planting soil layer (85) is paved with a ceramsite layer (86), and the top of the planting area (8) is fixedly connected with a reinforcing net (87).

7. The riverway management rainwater scouring sediment and solid waste multi-stage blocking structure according to claim 6, characterized in that: The inside of the drainage port (6) is mounted with a protective grille (10), and the top of the filter tank (5) is hingedly connected with a maintenance plate (710).

8. The riverway management rainwater scouring sediment and solid waste multi-stage blocking structure according to claim 7, characterized in that: The drainage channel (2) and the planting area (8) are fixedly connected with a rain blocking strip (11).

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