A bank for river ecological restoration

Abstract

This invention provides a novel riverbank for river ecological restoration, comprising an inlet section, an ecological restoration section, and an outlet section. The inlet section is a V-shaped guide wall, and the outlet section is a herringbone-shaped guide wall and a microbial generation system. The ecological restoration module includes an arc-shaped porous guide wall, a dense concrete baffle, a porous concrete baffle, a bio-barrier, an activated carbon plate, and a microbial generation system. Multiple ecological restoration modules constitute the ecological restoration section. The inlet section expands the cross-sectional area of ​​the water flow, slowing down the water velocity. The bio-barrier adsorbs impurities in the water and introduces the water flow into the microbial generation system, where it releases microorganisms upon contact with water, purifying the water. The dense concrete baffle directs the water flow into the main stream, creating a vortex that slows the water velocity, increases the hydraulic residence time per unit distance, and enhances the adsorption of pollutants by activated carbon and the decomposition of pollutants by microorganisms.

Description

Technical Field

[0001] This invention belongs to the field of river ecological restoration technology. Based on the practical needs of the theory of gradual ecological restoration, it specifically relates to a riverbank for river ecological restoration. Background Technology

[0002] During the process of industrialization and urbanization, the ecological functions of urban rivers and river belts have gradually disappeared, and rivers have become ditches for flood control and sewage discharge. With the gradual development of the economy and the improvement of people's living standards, people are increasingly aware of the importance of the ecological environment of urban rivers to the sustainable development of urban culture, landscape and socio-economic development, which has also prompted more and more scholars to begin to carry out research on river ecological restoration.

[0003] Eutrophication is one of the causes of river ecological pollution. Eutrophication occurs when the concentration of nutrients such as nitrogen and phosphorus in water increases, leading to the proliferation of algae and other plankton. With industrialization, factories discharge increasing amounts of industrial wastewater, which is then treated at wastewater treatment plants. However, due to the limited technology at these plants, the concentrations of nitrates, ammonia nitrogen, and phosphates remain high after treatment, easily leading to eutrophication.

[0004] Eutrophication of water bodies can lead to algal blooms, red tides, and other phenomena, affecting urban landscapes and even causing black and smelly water. Furthermore, if people drink water containing excessive levels of nitrites and nitrates, they may suffer from poisoning and other illnesses. Therefore, eutrophication of water bodies needs to be properly addressed.

[0005] Currently, the most effective method for treating eutrophication in rivers is microbial treatment. This method is inexpensive, has minimal environmental impact, leaves few residual problems, and virtually no secondary pollution. However, microbial treatment requires the water to remain in the river for an extended period to allow the microorganisms sufficient time to decompose nitrogen and phosphorus-containing substances. Summary of the Invention

[0006] To address the problems existing in the prior art, this invention provides a riverbank designed according to the theory of progressive ecological restoration for river ecological restoration.

[0007] The solution adopted by the present invention to solve its technical problem is: a riverbank for river ecological restoration, comprising an inlet section, an ecological restoration module and an outlet section arranged along the water flow direction, wherein adjacent ecological restoration modules are repeatedly arranged between the inlet and outlet sections, wherein the inlet section is an eight-shaped guide wall ecological restoration module and the outlet section is a herringbone-shaped guide wall ecological restoration module.

[0008] The ecological restoration module includes an arc-shaped porous guide wall ecological restoration module, a dense concrete baffle ecological restoration module, a porous concrete baffle ecological restoration module, a bio-barrier ecological restoration module, an activated carbon board ecological restoration module, an arc-shaped porous guide wall pore ecological restoration module, and a porous concrete baffle pore ecological restoration module. The dense concrete baffle ecological restoration module and the porous concrete baffle ecological restoration module are connected and inclined at the water-facing angle. The porous concrete baffle ecological restoration module is connected to the inner wall of the river channel. The water-facing surface of the arc-shaped porous guide wall ecological restoration module is arc-shaped, and both ends of the arc are tangent to the inner wall of the river channel and the dense concrete baffle ecological restoration module. The arc-shaped porous guide wall ecological restoration module, the porous concrete baffle ecological restoration module, and the river channel interior enclose the... A microbial growth system ecological restoration module is set up within the closed triangular area. The arc-shaped porous guide wall ecological restoration module is equipped with an arc-shaped porous guide wall hole ecological restoration module, and the concrete porous baffle ecological restoration module is equipped with a concrete baffle hole ecological restoration module. These modules connect the river channel to the closed triangular area. A backwater bay is formed between the figure-eight guide wall ecological restoration module and the concrete dense baffle ecological restoration module, or adjacent concrete dense baffle ecological restoration modules. A biological partition wall ecological restoration module is set up in the middle of the backwater bay, parallel to the concrete dense baffle ecological restoration module. The outer side of the biological partition wall ecological restoration module is wrapped with an activated carbon plate ecological restoration module.

[0009] Furthermore, the concrete porous baffle has an angle of 35° with the inner wall of the river channel, and the outer end of the concrete dense baffle and the outer end of the biological barrier are flush with the side of the inlet section guide wall facing the river channel.

[0010] Furthermore, slots are provided on both sides of the biological partition wall, and activated carbon plates are fitted into the slots. Activated carbon plate pulleys are provided on both sides of the activated carbon plate, and the thickness of the activated carbon plate is 2.5cm.

[0011] Furthermore, two rows of arc-shaped porous guide wall holes are arranged vertically parallel on the arc-shaped porous guide wall, and two rows of concrete baffle holes are arranged vertically parallel on the concrete porous baffle. The diameter of the arc-shaped porous guide wall holes is 5cm, and the diameter of the concrete baffle holes is 4.5cm.

[0012] Furthermore, the thickness of the arc-shaped porous flow guide wall, the dense concrete baffle, and the porous concrete baffle is all 20cm, while the thickness of the biological partition wall is 10cm.

[0013] Furthermore, the inlet ends of the arc-shaped porous guide wall holes and the concrete baffle holes are all equipped with vortex suction heads. The vortex suction heads are trumpet-shaped, with the large end facing the water inlet side and the small end facing the inside of the hole. The side wall of the vortex suction head is equipped with a spiral guide plate.

[0014] Furthermore, the ecological restoration module is arranged in a stepped manner, and the ecological restoration module is at the same height as the normal water level.

[0015] The beneficial effects of the present invention are as follows: The embankment for river ecological restoration described in this invention significantly slows down the water flow velocity and increases the unit hydraulic residence time by expanding the inlet section of the water passage and changing part of the water flow direction through the ecological restoration module. This keeps the microbial generation system in a relatively stable state. At the same time, the holes allow for a slow circulation between the river water and the water purified by the microbial generation system, which does not damage the living environment of the microorganisms and enables continuous circulation to continuously purify the water.

[0016] The embankment for river ecological restoration described in this invention has a microbial generation system that can release microorganisms into the river in a long-term and effective manner, degrading harmful substances in the water and purifying the water quality.

[0017] The embankment for river ecological restoration described in this invention has a biological barrier that significantly adsorbs non-degradable suspended solids in the river, thereby purifying the water quality. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the present invention.

[0019] Figure 2 This is a schematic diagram of the arc-shaped porous guide wall of the present invention.

[0020] Figure 3 This is a schematic diagram of the porous concrete baffle of the present invention.

[0021] Figure 4 This is a schematic diagram of the detachable activated carbon plate of the present invention.

[0022] Figure 5 This is a schematic diagram of the rotary suction head of the present invention.

[0023] Figure 6 This is a schematic diagram of another embodiment of the present invention.

[0024] The diagram is labeled as follows: 1. Herringbone-shaped flow guide wall; 2. Microbial generation system; 3. Arc-shaped porous flow guide wall; 4. Dense concrete baffle; 5. Porous concrete baffle; 6. Biological partition wall; 7. Activated carbon plate; 8. Holes in arc-shaped porous flow guide wall; 9. Holes in concrete baffle; 10. Activated carbon plate pulley; 11. Swirl suction head; 12. Flow guide plate. Detailed Implementation

[0025] The present invention will be further described below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and should not be used to limit the scope of protection of the present invention.

[0026] Example 1: This example uses a river channel with a length × width of 20 × 12 m and a water depth of 4 m as an example.

[0027] The water flow velocity is low near the banks of a river, making it prone to accumulating more pollutants, impurities, and garbage. Eutrophication of water bodies often occurs along the banks of rivers. To address these issues, the novel river ecological restoration revetment structure described in this invention modifies the banks of the river and utilizes a microbial generation system 3 to degrade and purify pollutants in the river.

[0028] like Figure 1 As shown, the present invention discloses a novel river ecological restoration structure, characterized by comprising an inlet section, an ecological restoration module, and an outlet section. The inlet section is a V-shaped guide wall 1, and the outlet section is a herringbone-shaped guide wall 2 and a microbial generation system 3. The ecological restoration module includes an arc-shaped porous guide wall 4, a dense concrete baffle 5, a porous concrete baffle 6, a biological partition wall 7, an activated carbon plate 8, arc-shaped porous guide wall holes 9, concrete baffle hole holes 10, activated carbon plate pulleys 11, and a vortex suction head 12. The inlet section features a figure-eight shaped guide wall; it consists of a porous concrete baffle connected to a dense concrete baffle, with the porous concrete baffle also connected to the inner wall of the river channel at a 35° angle. The outer arc of the curved porous guide wall is tangent to both the inner wall of the river channel and the dense concrete baffle. The microbial generation system is located within a closed triangular area enclosed by the inner wall of the river channel, the dense concrete baffle, and the curved porous guide wall. The activated carbon plate wraps around the outside of the biological partition wall. The biological partition wall is centrally and parallelly arranged between the two dense concrete baffles. The curved porous guide wall has two rows of holes arranged vertically in parallel, such as... Figure 2 As shown; the concrete baffle has holes arranged in two rows, vertically parallel, as follows. Figure 3 As shown; the ecological restoration modules are symmetrically distributed on both sides of the river channel; the thickness of the dense concrete baffle, the porous concrete baffle, and the arc-shaped porous guide wall is 20cm; the thickness of the biological barrier is 10cm; as shown. Figure 4 As shown, the activated carbon plate pulleys are arranged on both sides of the activated carbon plate; as Figure 5 As shown, the vortex suction head is arranged at the water inlet of the arc-shaped porous guide wall holes and the concrete baffle holes.

[0029] The new type of riverbank for ecological restoration provided by this invention can slow down water flow, stabilize the microbial environment, and protect the microbial living environment from being destroyed; the channel has moderate flow guiding properties, which can help the microorganisms purify the local water quality and allow some microorganisms and their derivatives to spread to the river area, supplementing the river microbial environment.

[0030] Water flows into the ecological restoration module through the inlet section's figure-eight-shaped guide wall 1, splitting into two streams, A and B. Stream A flows into the channel between the figure-eight-shaped guide wall 1 and the biological barrier 6, making full contact with the biological barrier 6 and adsorbing impurities in the water. Then, it changes direction through the arc-shaped porous guide wall 4, splitting into two streams, A1 and A2. Stream A1 enters the microbial generation system 3 through the holes 9 of the arc-shaped porous guide wall. Upon contact with water, the microbial generation system 3 releases microorganisms to purify the water, and then flows into the next ecological restoration module through the holes 10 of the concrete porous baffle. Stream A2 flows into the river channel through the dense concrete baffle 5 and collides with stream B to form a vortex, slowing down the water flow velocity, increasing the unit travel time, and increasing the hydraulic residence time of the microbial ecological restoration. This process continues until it finally flows out from the outlet section.

[0031] Example 2: As Figure 6 As shown, the outer end of the dense concrete baffle 5 is curved in the direction of downstream flow. Simultaneously, the outermost end of the dense concrete baffle 5 is shorter than the outermost end of the bio-barrier 7, meaning the outermost end of the dense concrete baffle 5 is closer to the riverbank. Since the flow velocity in the middle of the river is faster, shortening the dense concrete baffle 5 creates negative pressure in the area near its outer end (faster flow in the main channel, negative pressure at the outlet of the diversion seat) by utilizing the difference in river flow velocity. This negative pressure diversion allows more water to enter the inlet section (flow A), promoting water circulation in each unit.

[0032] Example 3: In order to cope with the drop in river water level during the dry season, the sedimentation tank is isolated from the river to form an independent environment to prevent the death of microorganisms.

[0033] On the outlet side of the triangular enclosed area, inside the bio-barrier 6, an outlet floating gate is installed. This gate consists of a track, a perforated gate, and a top float. A vertical track is installed inside the bio-barrier 6, with the perforated gate installed within it. The top float is connected above the perforated gate. When a flood arrives and the water level rises significantly, the top float moves upward, causing the perforations on the perforated gate to align with the holes in the bio-barrier 6, blocking the rear guide holes. This creates a semi-isolated, non-guided microbial space, preventing floodwaters from damaging the microbial environment. Effect: Forms a semi-isolated environment under extreme conditions, preventing damage to the microbial habitat.

Claims

1. A riverbank embankment for river ecological restoration, characterized in that, It includes an inlet section, an ecological restoration module and an outlet section set along the direction of water flow. Adjacent ecological restoration modules are repeatedly arranged between the inlet and outlet sections. The inlet section is a figure-eight shaped guide wall (1) and the outlet section is a herringbone shaped guide wall (2). The ecological restoration module includes an arc-shaped porous guide wall (4), a dense concrete baffle (5), a porous concrete baffle (6), a biological barrier (7), an activated carbon plate (8), holes in the arc-shaped porous guide wall (9), and holes in the concrete baffle (10). The dense concrete baffle (5) and the porous concrete baffle (6) are connected and inclined in the direction of the water-facing angle. The porous concrete baffle (6) is connected to the inner wall of the river channel. The water-facing surface of the arc-shaped porous guide wall (4) is set to be arc-shaped. The two ends of the arc-shaped porous guide wall (4) are tangent to the inner wall of the river channel and the dense concrete baffle (5). The arc-shaped porous guide wall (4), the porous concrete baffle (6), and the inner wall of the river channel are connected. A microbial generation system (3) is set up in the closed triangular area. The arc-shaped porous guide wall (4) is provided with arc-shaped porous guide wall holes (9), and the concrete porous baffle (6) is provided with concrete baffle holes (10). The arc-shaped porous guide wall holes (9) and the concrete baffle holes (10) are respectively connected to the river channel and the closed triangular area. The figure-eight guide wall (1) and the concrete dense baffle (5) or the adjacent concrete dense baffle (5) form a backwater bay. A biological partition wall (7) is set up in the middle of the backwater bay. The biological partition wall (7) is parallel to the concrete dense baffle (5). The outside of the biological partition wall (7) is wrapped with activated carbon plate (8).

2. The riverbank for river ecological restoration according to claim 1, characterized in that, The concrete porous baffle (6) has an angle of 35° with the inner wall of the river channel. The outer end of the concrete dense baffle (5) and the outer end of the biological barrier (7) are flush with the side of the inlet section guide wall facing the river channel.

3. The riverbank for river ecological restoration according to claim 1, characterized in that, The biological partition (7) has slots on both sides, and the activated carbon plate (8) is fitted in the slots. The activated carbon plate (8) has pulleys (11) on both sides. The thickness of the activated carbon plate (8) is 2.5cm.

4. The riverbank for river ecological restoration according to claim 1, characterized in that, Two rows of arc-shaped porous guide wall holes (9) are arranged vertically and parallel on the arc-shaped porous guide wall, and two rows of concrete baffle holes (10) are arranged vertically and parallel on the concrete porous baffle (6). The diameter of the arc-shaped porous guide wall holes (9) is 5cm, and the diameter of the concrete baffle holes (10) is 4.5cm.

5. The riverbank embankment for river ecological restoration according to claim 1, characterized in that, The thickness of the arc-shaped porous flow guide wall (4), the concrete dense baffle (5) and the concrete porous baffle (6) is 20cm, and the thickness of the biological partition wall (7) is 10cm.

6. The riverbank embankment for river ecological restoration according to claim 1, characterized in that, Both the arc-shaped porous guide wall hole (9) and the concrete baffle hole (10) are equipped with a vortex suction head (12) at the water inlet end. The vortex suction head (12) is trumpet-shaped, with its large opening facing the water inlet side and its small opening facing the inside of the hole. A spiral guide plate (13) is provided on the side wall of the vortex suction head (12).

7. The riverbank embankment for river ecological restoration according to claim 1, characterized in that, The ecological restoration modules are arranged in a stepped layout.

8. The riverbank embankment for river ecological restoration according to claim 1, characterized in that, The ecological restoration module is at the same height as the normal water level.

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