Urban river pollution remediation device based on plant purification and aeration technology

By planting water-propelled plants and root-growing floating plants in urban rivers, and combining garbage collection and aeration technology, the problems of water quality deterioration and ecological damage in urban rivers have been solved, and water purification and ecological environment have been achieved.

CN222861304UActive Publication Date: 2025-05-13JIANGSU ENVIRONMENTAL PROTECTION GRP SUZHOU CO LTD
View PDF 0 Cites 0 Cited by

Patent Information

Application Number
CN202421758082.1
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-07-24
Publication Date
2025-05-13
Estimated Expiration
2034-07-24

AI Technical Summary

Technical Problem

Due to human pollution, the water quality of rivers in urban rivers deteriorates and the ecology is damaged.

Method used

A urban river pollution repair device based on plant purification and aeration technology is adopted to purify and absorb the water bodies in the polluted river by planting water-propelled plants and root-growing floating plants to improve the water quality and ecological environment. At the same time, the device is equipped with a garbage collection assembly and an aeration assembly for collecting garbage in the river channel and lifting dissolved oxygen in the water body.

Benefits of technology

Through the synergy between water-propelled plants and root-growing floating plants, effective purification of water bodies in contaminated rivers has been achieved, significantly reducing the secondary pollution of garbage to water bodies, and improving water quality and ecological environment.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN222861304U_ABST
    Figure CN222861304U_ABST
Patent Text Reader

Abstract

The utility model discloses an urban river pollution restoration device based on plant purification and aeration technology, which comprises an ecological floating island, a cavity is arranged in the ecological floating island, a first planting groove for planting emergent aquatic plants is arranged on the upper half part of the cavity, and a second planting groove for planting rooted floating plants is arranged on the lower half part of the cavity. A garbage collection assembly is integrated at one end of the ecological floating island along the water flow direction of the river channel, an aeration assembly is arranged at the other end of the ecological floating island, a water inlet and a water outlet are further formed in the ecological floating island, and the cavity is communicated with the outside through the water inlet and the water outlet; the water inlet and the water outlet are located below the garbage collection assembly and the aeration assembly respectively, and a first filter screen and a second filter screen are arranged at the water inlet and the water outlet respectively; by integrating the multiple functions of plant purification, aeration oxygenation, garbage collection, efficient filtration and the like, an all-dimensional and multi-layer riverway pollution remediation system is constructed, and effective treatment and ecological remediation of urban riverway water bodies are achieved.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] The utility model relates to the field of environmental protection engineering and water ecological restoration, in particular to an urban river pollution restoration device based on plant purification and aeration technology. Background Art

[0002] Industrial wastewater, as one of the main sources of urban river pollution, has a large discharge volume, a wide impact range and complex composition, which brings huge challenges to water management.

[0003] At the same time, chemical fertilizers and pesticides widely used in agricultural production enter rivers through surface runoff and infiltration, bringing a large amount of nutrients such as nitrogen, phosphorus, and potassium. These nutrients accumulate excessively in water bodies, causing serious eutrophication problems, leading to abnormal reproduction of algae and other plankton, forming a "water bloom" phenomenon, seriously reducing the transparency and dissolved oxygen content of water bodies, and destroying the balance of aquatic ecosystems. In addition, organic matter and detergent residues contained in domestic sewage also aggravate the deterioration of river water quality.

[0004] Based on the above severe situation, it is particularly important to develop a device that can effectively repair the polluted ecology of urban rivers. Utility Model Content

[0005] The technical problem to be solved by the utility model is that the water quality of rivers in urban rivers is deteriorated and the ecology is destroyed due to human pollution.

[0006] The utility model proposes an urban river pollution restoration device based on plant purification and aeration technology. The device purifies and absorbs the water in the polluted river by planting emergent plants and rooted floating plants, thereby improving the water quality and ecological environment. At the same time, the first filter screen and the second filter screen block impurities in the polluted river to avoid affecting the growth of the emergent plants and rooted floating plants. The garbage collection component is used to collect garbage floating on the surface of the river along the water flow in the river. The aeration component is used to increase the contact area between the river water in the river and the air, increase the dissolved oxygen in the water, promote the growth of microorganisms in the water, thereby improving the water environment and purifying the water quality.

[0007] The technical solutions adopted are:

[0008] A device for repairing pollution in an urban river channel based on plant purification and aeration technology, the repair device comprising an ecological floating island, a cavity being arranged inside the ecological floating island, a first planting trough for planting emergent plants being arranged in the upper part of the cavity, a second planting trough for planting rooted floating plants being arranged in the lower part of the cavity, the two planting troughs being interconnected, a garbage collection component being integrated at one end of the ecological floating island along the direction of water flow in the river channel, an aeration component being arranged at the other end, a water inlet and a water outlet being further arranged on the ecological floating island, the cavity being connected to the outside through the water inlet and the water outlet, the water inlet and the water outlet being respectively located below the garbage collection component and the aeration component, a first filter screen and a second filter screen being respectively arranged at the water inlet and the water outlet.

[0009] In a further embodiment of the technical solution of the utility model, the garbage collection assembly includes a first motor and a second motor arranged on the top of the ecological floating island, a first guide rod connected to the first motor, a second guide rod connected to the second motor, and a garbage collection box for collecting river garbage, and the garbage collection box is arranged below the first guide rod and the second guide rod; the first guide rod and the second guide rod are used to intercept garbage and flocs on the surface of the water body in the river, so that they flow into the garbage collection box along the guiding direction of the first guide rod and the second guide rod.

[0010] In a further embodiment of the technical solution of the utility model, a baffle is fixed on the top of the garbage collection box, slanting downward toward the inside of the garbage collection box, and a plurality of water outlet holes are provided on the surface of the garbage collection box. The baffle can reduce the risk of garbage floating out of the garbage collection box. The garbage collection box can continuously absorb and discharge water through the water outlet holes under the action of the polluted river flow, thereby storing garbage.

[0011] In a further preferred embodiment of the technical solution of the utility model, the aeration assembly includes impellers fixed on the left and right sides of the ecological floating island and half immersed in the river water for increasing the dissolved oxygen in the river water; the impellers are driven to rotate by the water flow in the river channel, effectively increasing the dissolved oxygen content of the river water in the river channel, thereby improving the water quality environment.

[0012] As a further optimization of the technical solution of the utility model, a cleaning component for cleaning the first filter is also provided at the bottom of the ecological floating island. The first filter is arranged facing the direction of the water flow in the river channel. Compared with the second filter, it is easier for impurities in the water to adhere to it, thereby preventing the first filter from being blocked and affecting the absorption and purification of water in the polluted river channel by emergent plants and rooted floating plants.

[0013] Further optimization of the technical solution of the utility model is that the cleaning component includes water wheels integrated on the left and right sides of the bottom of the ecological floating island and a brush that reciprocates on the surface of the first filter screen under the driving action of the water wheel. Guide rails are provided between the water wheels on the left and right sides and the ecological floating island respectively. Each guide rail is installed at the edge of the ecological floating island adjacent to one side of the first filter screen. A sliding module is provided on each guide rail, each sliding module is fixedly connected to the brush, and a connecting rod is provided between each sliding module and the corresponding water wheel. When the water wheel is driven to rotate by the water flow, power is transmitted through the connecting rod to drive the sliding module to reciprocate up and down on the guide rail to clean the first filter screen.

[0014] As a further optimization of the technical solution of the utility model, a power storage component is also provided on the top of the ecological floating island. The power storage component is located above the aeration component, and the power storage component is used to provide power for the power-demanding equipment of the entire device.

[0015] In a further embodiment of the technical solution of the utility model, the power storage component includes a battery and a solar panel, the battery is electrically connected to the first motor, the second motor and the solar panel respectively, the solar panel absorbs sunlight and converts light energy into electrical energy and stores it in the battery, and the battery then provides power to the first motor and the second motor.

[0016] As a further optimization of the technical solution of the utility model, floats are provided at the left and right ends of the ecological floating island for enabling the ecological floating island to float on the surface of the river water, so as to assist the ecological floating island to float steadily on the water surface.

[0017] Compared with the prior art, the utility model has the following beneficial effects:

[0018] 1. The utility model effectively purifies polluted river water through the synergistic effect of emergent plants and rooted floating plants. By utilizing the direction of river water flow, a garbage collection box is designed to automatically capture and collect floating garbage in the river, significantly reducing the secondary pollution of garbage to the water body; at the same time, an aeration component is equipped to increase the dissolved oxygen content of the water body, promote the reproduction of microbial communities, and further improve the water quality and ecological environment, achieving comprehensive water purification.

[0019] 2. The utility model is provided with a double filtering system of the first filter and the second filter to ensure that the purification efficiency of emergent plants and rooted floating plants is not disturbed by impurities in the river water; in addition, a high-efficiency cleaning component is arranged adjacent to the first filter, which can not only continuously remove impurities attached to the filter to ensure that the river water passes smoothly through the plant area, but its built-in water wheel can also automatically rotate under the drive of the water flow, thereby promoting water circulation in the garbage collection box and optimizing the garbage collection efficiency.

[0020] 3. The coordinated work of the first motor, the second motor, the first guide rod and the second guide rod designed in the utility model significantly expands the operating range of the garbage collection box, realizes the efficient and comprehensive cleaning of garbage on the surface of polluted rivers, and improves the efficiency of river cleaning.

[0021] 4. The utility model deploys garbage collection components and aeration components at both ends of the artificial floating island, making full use of the natural water flow of the river, which not only realizes the effective collection of garbage, but also promotes the improvement of dissolved oxygen in the water body; at the same time, the garbage collection components, aeration components and power storage components are evenly arranged at both ends of the artificial floating island, ensuring the overall stability and balance of the artificial floating island. The floats configured along the non-water flow direction of the artificial floating island further enhance the buoyancy and stability of the artificial floating island, ensuring that it can float steadily on the water surface under various water flow conditions and perform its purification and cleaning tasks. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of this embodiment;

[0023] Figure 2 It is a rear view of the overall structure of this embodiment;

[0024] Figure 3 It is a front view of the overall structure of this embodiment;

[0025] Figure 4 is a schematic diagram of the structure of this embodiment without the first guide rod and the second guide rod;

[0026] Figure 5 yes Figure 4 Schematic diagram of the structure at A in the middle;

[0027] Figure 6 It is a schematic diagram of the structure of a garbage collection box;

[0028] Figure 7 This is a schematic diagram of the structure of this embodiment without the solar panels and top cover;

[0029] Explanation of the accompanying drawings: 1-ecological floating island, 2-garbage collection component, 3-aeration component, 4-power storage component, 5-cleaning component, 6-first planting trough, 7-second planting trough, 8-float, 9-first filter screen, 10-second filter screen, 11-T-shaped groove, 12-fixed groove, 13-rotating shaft, 14-rotating shaft base, 21-garbage collection box, 22-first motor, 23-first guide rod, 24-second motor, 25-second guide rod, 31-impeller, 41-battery, 42-solar panel, 51-water wheel, 52-connecting rod, 53-guide rail, 54-sliding module, 55-brush, 211-fixed block, 212-water outlet. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solutions and advantages of the present invention more clear, the following Figure 1-7 And embodiments, the utility model is further described in detail. Example

[0031] like Figure 1-7 As shown, an urban river pollution restoration device based on plant purification and aeration technology of this embodiment includes an ecological floating island 1, the ecological floating island 1 has a rectangular cavity in the middle, and the top is extended outward on all sides, and a garbage collection component 2, an aeration device, a power storage component 4 and a plurality of floats 8 are fixed at the extension.

[0032] The ecological floating island 1 is provided with a garbage collection component 2, an aeration device and a power storage component 4 at both ends along the river flow direction. The garbage collection component 2 is arranged at the end of the ecological floating island 1 facing the river flow direction, the aeration device and the power storage component 4 are arranged at the other end, and the aeration component 3 is arranged at the bottom edge of one end of the ecological floating island 1. An installation groove is opened on the top of the ecological floating island 1, and the power storage component 4 is arranged in the installation groove.

[0033] like Figure 1 and Figure 2 As shown, multiple floats 8 are symmetrically arranged at the two ends of the ecological floating island 1 where there is no garbage collection component 2, aeration device and power storage component 4, namely the left and right ends of the ecological floating island 1, to ensure that the ecological floating island 1 can float stably on the water surface of the river.

[0034] like Figure 1 As shown, a cavity is provided in the middle part of the ecological floating island 1, a first planting trough 6 with emergent plants is provided in the upper part of the cavity, and a second planting trough 7 with rooted floating plants is provided in the lower part of the cavity; connecting holes are provided at the bottom of the first planting trough 6 and the second planting trough respectively, and the two planting troughs are connected to each other; they are used to purify water in the river.

[0035] like Figure 3-6 As shown, in this embodiment, the garbage collection assembly 2 includes a garbage collection box 21, a first motor 22, a second motor 24, a first guide rod 23 and a second guide rod 25. The garbage collection box 21 is detachably arranged on the side of the ecological floating island 1. The ecological floating island 1 is provided with a T-shaped groove 11 on one side of the garbage collection box 21. The two sides of the T-shaped groove 11 near the bottom are symmetrically provided with fixing grooves 12 for facilitating the insertion and fixing of the garbage collection box 21. Fixed blocks 211 are provided on both sides of the garbage collection box 21 to cooperate with it, so as to facilitate subsequent staff to directly take it out and clean up the garbage.

[0036] like Figure 6As shown, in this embodiment, the garbage collection box 21 is in an upward opening shape, and a baffle plate slanting inward and downward is provided at the opening of the garbage collection box 21. The inclination of the baffle plate is set between 45 degrees and 60 degrees, which can effectively prevent the garbage in the garbage collection box 21 from being discharged from the garbage collection box 21 under the action of the buoyancy of the river water. A plurality of water outlet holes 212 are provided around and at the bottom of the garbage collection box 21 to facilitate the discharge of the river water that enters the garbage collection box 21 along with the garbage during the collection process.

[0037] like Figure 3 As shown, in this embodiment, the first motor 22 and the second motor 24 are respectively fixed at the left and right ends of the top of the artificial floating island on one side of the garbage collection box 21, and the output ends of the first motor 22 and the second motor 24 respectively pass through the top of the T-shaped groove 11, and the first guide rod 23 and the second guide rod 25 are respectively sleeved on the outer sides of the output ends of the first motor 22 and the second motor 24. The output ends of the first motor 22 and the second motor 24 are respectively key-connected with the first guide rod 23 and the second guide rod 25, thereby driving the first guide rod 23 and the second guide rod 25 to rotate.

[0038] A waterproof bearing is provided at the connection between the output end of the first motor 22 and the second motor 24 and the T-shaped groove 11. At the same time, waterproof covers are provided on the outer surfaces of the first motor 22 and the second motor 24 to prevent river water from entering the motor and causing damage to the motor.

[0039] like Figure 4 and 5 As shown, in this embodiment, a rotating shaft base 14 is fixed on the surface of the T-shaped groove 11 opposite to the output ends of the first motor 22 and the second motor 24, and a rotating shaft 13 is provided on the rotating shaft base 14, which is key-connected with the first guide rod 23 and the second guide rod 25 to cooperate with the rotation of the first guide rod 23 and the second guide rod 25, and at the same time support the first guide rod 23 and the second guide rod 25.

[0040] In this embodiment, annular sleeves are welded to one end of the first guide rod 23 and the second guide rod 25 respectively, which cooperate with the output ends of the two rotating shafts 13, the first motor 22 and the second motor 24. Rectangular blocks are fixed on the first guide rod 23 and the second guide rod 25, and the rectangular blocks can be partially immersed in water to prevent the first guide rod 23 and the second guide rod 25 from not contacting the water surface, thereby causing garbage to flow away from the gap between the first guide rod 23, the second guide rod 25 and the water surface.

[0041] like Figure 3 and Figure 4As shown, in this embodiment, an inclined surface is provided between the surface of the T-shaped groove 11 on which the rotating base is set and the surface on which the fixing groove 12 is set, so as to facilitate the discharge of water in the T-shaped groove 11. During the floating process of the ecological floating island 1 on the water surface, water will inevitably be submerged near the rotating shaft 13 or the output ends of the first motor 22 and the second motor 24. If there is no inclined surface, the water will be difficult to be discharged due to the structure of the T-shaped groove 11. Over a long period of time, it is easy to cause damage to the first motor 22, the second motor 24 and other parts in the T-shaped groove 11.

[0042] like Figure 4 As shown, in this embodiment, the aeration assembly 3 includes an impeller 31, and the impellers 31 on both sides are fixed on the left and right sides of the ecological floating island 1 through a bracket, and rotate under the action of the water flow in the river, thereby increasing the dissolved oxygen in the river water, promoting the growth of microorganisms in the water, and further improving the water environment and purifying the water quality. The bracket is welded and fixed below the extension of the ecological floating island 1 at the opposite end of the garbage mobile phone assembly.

[0043] like Figure 2 and Figure 7 As shown, in this embodiment, the power storage component 4 includes a battery 41 and a solar panel 42. A battery 41 placement groove is opened on the top of the extension of the ecological floating island 1 above the aeration component 3. The battery 41 is fixed in the power storage component 4 placement groove. A top cover is provided on the top of the battery 41 placement groove. A sealing ring is provided around the top cover to prevent water from entering the battery 41 placement groove. The solar panel 42 is fixed on the top cover and electrically connected to the battery 41. The sunlight absorbed by the solar panel 42 is converted from light energy into electrical energy and stored in the battery 41. The battery 41 is also electrically connected to the first motor 22 and the second motor 24 respectively to provide power for them.

[0044] like Figure 1 and Figure 2 As shown, in this embodiment, the ecological floating island 1 has a water inlet at one end near the bottom and a water outlet at the end opposite to the water inlet. The cavity is connected to the outside through the water inlet and the water outlet. The water inlet is arranged below the garbage component, and a first filter screen 9 is arranged at the water inlet. The water outlet is arranged below the aeration component 3, and a second filter screen 10 is arranged at the water outlet. The first filter screen 9 and the second filter screen 10 are used to filter out impurities in the water to prevent impurities from being adsorbed on the rooted floating plants and emergent plants when they flow through the rooted floating plants and emergent plants along the water flow, thereby affecting their growth, affecting their water purification, and affecting ecological restoration.

[0045] Since the first filter screen 9 is arranged at the end facing the river flow, a large amount of impurities are easily attached to the surface of the first filter screen 9 under the action of the water flow, which is easy to be blocked over time, thereby making it difficult for the water flow in the cavity of the ecological floating island 1 to flow, resulting in poor purification effect. Therefore, a cleaning component 5 for cleaning the first filter screen 9 is also provided at the water inlet.

[0046] like Figure 1 and Figure 4 As shown, in this embodiment, the cleaning component 5 includes a water wheel 51 fixed on the left and right sides of the bottom of the ecological floating island 1 and a brush 55 that moves up and down on the surface of the first filter screen 9 under the action of the water wheel 51. Guide rails 53 are respectively provided between the water wheels 51 on the left and right sides and the ecological floating island 1. The guide rails 53 are fixed to the edges of the ecological floating island 1 on the left and right sides of the first filter screen 9 by screws. A sliding module 54 is slidably provided on the guide rail 53. The sliding module 54 is fixedly connected to the brush 55. A connecting rod 52 is provided between the sliding module 54 and the water wheel 51. The two ends of the connecting rod 52 are respectively hinged to the sliding module 54 and one of the blades of the water wheel 51. Therefore, when the water wheel 51 rotates under the action of the water flow, the sliding module 54 is driven by the connecting rod 52 to move up and down on the guide rail 53, thereby driving the brush 55 to move up and down on the surface of the first filter screen 9, thereby cleaning the first filter screen 9.

[0047] In this embodiment, the water wheels 51 on the left and right sides are fixedly connected by a main shaft, and the main shaft is rotatably connected to the ecological floating island 1 through a waterproof bearing. The waterproof bearing is arranged at the connection between the main shaft and the ecological floating island 1, and the main shaft is arranged in the bottom cavity of the second planting trough 7, so as to increase the adjustable length of the guide rail 53, so that the range of the brush 55 to clean the first filter screen 9 is enlarged, which is more convenient for water to pass through.

[0048] In this embodiment, the water wheels 51 fixed on the left and right sides of the bottom of the ecological floating island 1 rotate under the action of the water flow and can also accelerate the flow of river water at the bottom of the garbage collection box 21, thereby accelerating the speed of water discharge and suction in the garbage collection box 21 and collecting more garbage.

[0049] In this embodiment, since the garbage collection component 2, the aeration component 3 and the power storage component 4 are respectively arranged at the two ends of the ecological floating island 1, the difference in weight may easily cause the ecological floating island 1 to be unbalanced. Therefore, counterweights may be added according to actual usage to maintain the overall balance of the ecological floating island 1.

[0050] In this embodiment, ropes are arranged around the ecological floating island 1 to fix it to the shore to prevent the ecological floating island 1 from being carried away by the water flow.

[0051] The specific method of using the urban river pollution restoration device based on plant purification and aeration technology in this embodiment is: before use, the whole device is placed in the urban river, one end of the garbage collection component 2 is set along the river flow direction, the garbage collection component 2 is set upstream of the river flow direction, and the ecological floating island 1 is fixed with a rope. Under the action of multiple floats 8, the ecological floating island 1 partially floats on the water surface and partially submerged in the water.

[0052] When in use, the first guide rod 23 and the second guide rod 25 are rotated and unfolded by controlling the first motor 22 and the second motor 24, so as to intercept garbage in the river channel on a large scale. The garbage flows into the garbage collection box 21 under the action of the water flow along the guiding direction of the first guide rod 23 and the second guide rod 25, thereby reducing garbage pollution in the river channel. At the same time, under the action of the water flow, the impeller 31 and the water wheel 51 rotate along the direction of the water flow respectively. The impeller 31 is half immersed in the water. When rotating along the direction of the river, it drives part of the river water to contact with the air, thereby increasing the dissolved oxygen in the river water, promoting the growth of microorganisms in the water, thereby improving the water environment and purifying the water quality. When the water wheel 51 rotates along the direction of the river, it drives the brush 55 to move up and down on the surface of the first filter screen 9 to clean the first filter screen 9, so that the river water flows from the first filter screen 9 into the cavity of the ecological floating island 1, and the emergent plants and rooted floating plants purify the river water, and then it is discharged by the second filter screen 10, so as to prevent impurities in the river water from entering the cavity of the ecological floating island 1 and affecting the growth and purification of the emergent plants and rooted floating plants.

[0053] The above embodiments are only for illustrating the technical idea of ​​the present utility model, and cannot be used to limit the protection scope of the present utility model. Any changes made on the basis of the technical solution in accordance with the technical idea proposed by the present utility model shall fall within the protection scope of the present utility model.

Claims

1. An urban river pollution remediation device based on plant purification and aeration technology, characterized by: The repair device comprises an ecological floating island (1), wherein a cavity is arranged inside the ecological floating island (1), wherein the upper part of the cavity is provided with a first planting trough (6) for planting emergent plants, and the lower part of the cavity is provided with a second planting trough (7) for planting rooted floating plants, wherein the two planting troughs are interconnected, wherein one end of the ecological floating island (1) along the direction of the river flow is integrated with a garbage collection component (2), and the other end is arranged with an aeration component (3), wherein a water inlet and a water outlet are also arranged on the ecological floating island (1), wherein the cavity is connected to the outside through the water inlet and the water outlet, wherein the water inlet and the water outlet are respectively located below the garbage collection component (2) and the aeration component (3), and wherein a first filter screen (9) and a second filter screen (10) are respectively arranged at the water inlet and the water outlet.

2. The urban river pollution restoration device based on plant purification and aeration technology according to claim 1 is characterized by: The garbage collection assembly (2) comprises a first motor (22) and a second motor (24) arranged on the top of the ecological floating island (1), a first guide rod (23) connected to the first motor (22), a second guide rod (25) connected to the second motor (24), and a garbage collection box (21) for collecting river garbage, wherein the garbage collection box (21) is arranged below the first guide rod (23) and the second guide rod (25).

3. The urban river pollution restoration device based on plant purification and aeration technology according to claim 2 is characterized by: A baffle plate is fixed on the top of the garbage collection box (21) and is inclined downward toward the inside of the garbage collection box (21). A plurality of water outlet holes (212) are provided on the surface of the garbage collection box (21).

4. The urban river pollution restoration device based on plant purification and aeration technology according to claim 1 is characterized by: The aeration assembly (3) includes impellers (31) fixed on the left and right sides of the ecological floating island (1) and half-submerged in the river water for increasing the dissolved oxygen in the river water.

5. The urban river pollution restoration device based on plant purification and aeration technology according to claim 1 is characterized by: A cleaning component (5) for cleaning the first filter screen (9) is also provided at the bottom of the ecological floating island (1).

6. The urban river pollution restoration device based on plant purification and aeration technology according to claim 5 is characterized by: The cleaning component (5) comprises water wheels (51) integrated on the left and right sides of the bottom of the ecological floating island (1) and brushes (55) that reciprocate on the surface of the first filter screen (9) under the driving action of the water wheels (51), guide rails (53) are provided between the water wheels (51) on the left and right sides and the ecological floating island (1), each guide rail (53) is installed at the edge of the ecological floating island (1) adjacent to one side of the first filter screen (9), each guide rail (53) is provided with a sliding module (54), each sliding module (54) is fixedly connected to the brush (55), and a connecting rod (52) is provided between each sliding module (54) and the corresponding water wheel (51).

7. The urban river pollution restoration device based on plant purification and aeration technology according to claim 1 is characterized by: A power storage component (4) is also provided on the top of the ecological floating island (1), and the power storage component (4) is located above the aeration component (3).

8. The urban river pollution restoration device based on plant purification and aeration technology according to claim 2 or 7, characterized in that: The power storage component (4) comprises a storage battery (41) and a solar power generation panel (42); the storage battery (41) is electrically connected to the first motor (22), the second motor (24) and the solar power generation panel (42) respectively.

9. The urban river pollution restoration device based on plant purification and aeration technology according to claim 1 is characterized by: Floats (8) are provided at the left and right ends of the ecological floating island (1) to enable the ecological floating island (1) to float on the surface of the river water.