Method and device for treating water environment of river basin

Abstract

The application provides a method and device for treating water environment of a river basin to simultaneously solve the problems of ecological restoration and endogenous treatment. The method comprises the following steps: excavating sludge from a riverbed, placing the sludge on a support frame, the support frame being arranged on a valley slope beside the riverbed and extending from the valley slope to the riverbed; opening a plurality of air holes on the sludge, and airing for a certain period of time; measuring the content of different heavy metals in the sludge, selecting appropriate metal hyperaccumulating plant seeds or particles with metal hyperaccumulating plant seeds, and sowing the seeds on the sludge; pruning or cleaning the plants at irregular intervals according to the growth of the plants, and transferring or replacing the sludge with landscape plants after the heavy metals in the sludge are detected to be qualified. In this way, the smelly sludge on the riverbed can be removed, the water environment of the river basin can be quickly improved, the sludge does not need to be transferred for a long distance, the environment of other areas will not be affected, and secondary damage to the environment is avoided. The support frame is arranged on the valley slope, and the sludge and the valley slope form an integrated structure.

Description

Technical Field

[0001] This application relates to the field of water treatment technology, and in particular to methods and apparatus for watershed water environment management. Background Technology

[0002] Watershed water environment management methods mainly include pollution source control and interception, endogenous pollution control, water replenishment, ecological restoration, and landscape enhancement. For polluted watersheds, pollution source control and interception alone are unlikely to achieve good results. Water replenishment is greatly affected by geographical environment, and some areas lack the conditions for water replenishment. Therefore, endogenous pollution control and ecological restoration have become key to watershed water environment management. Endogenous pollution control mainly includes the treatment of odorous, black, and silty sludge and garbage disposal, while ecological restoration includes the construction of plant communities and animal communities. How to quickly and efficiently carry out ecological restoration and endogenous pollution control is a major challenge.

[0003] Chinese patent application CN106430598B, entitled "An Ecological Slope Protection System for the Remediation of Black and Odorous Water Bodies," discloses an ecological slope protection system for the remediation of black and odorous water bodies. This system primarily targets point-source and non-point-source pollutants such as domestic sewage and initial rainwater flowing into the water body. Riverbanks are transitional zones where water and land meet, exhibiting a significant edge effect. These areas experience active flows of matter, nutrients, and energy, providing habitats for various organisms. Transforming riverbanks into ecological slopes, enabling them to effectively filter surface runoff, improve water quality, and restore ecosystems, plays a crucial role in enhancing the river's self-purification capacity. However, it cannot address endogenous pollution sources. For example, if the watershed is already polluted, resulting in a large amount of foul-smelling black silt in the riverbed, the water environment will be difficult to improve in the short term without the removal of this silt.

[0004] Chinese patent application CN111320279B, entitled "An Ecological Slope Protection with Highly Efficient Water Purification Function," discloses an ecological slope protection system with highly efficient water purification function. This system consists of a soft slope composed of multiple layers of composite materials, with an internal ecological filter. It is constructed using graded fillers of different particle sizes, creating an ecological water treatment system with microorganisms, plants, animals, and fillers as the main elements. However, it cannot address endogenous pollution sources. For example, if the watershed is already polluted, resulting in a large amount of foul-smelling black silt in the riverbed, the water environment of the watershed will be difficult to improve in the short term without cleaning up the foul-smelling black silt. Summary of the Invention

[0005] This application provides a method and apparatus for watershed water environment management, which can simultaneously address the issues of ecological restoration and endogenous pollution control.

[0006] According to the first aspect of this application, a method for watershed water environment management is provided, comprising at least the following steps:

[0007] The silt is dredged from the riverbed and placed on a support frame, which is set up on the valley slope next to the riverbed and extends from the valley slope toward the riverbed.

[0008] Make multiple ventilation holes in the silt and let it dry for a certain period of time;

[0009] Measure the content of different heavy metals in the silt, select suitable metal hyperaccumulating plant seeds or particles with metal hyperaccumulating plant seeds, sow them on the silt, or transplant metal hyperaccumulating plants.

[0010] Depending on the growth of the plants, pruning or cleaning will be carried out periodically. After the heavy metals in the silt are tested and found to be qualified, the silt will be transferred for use or replaced with landscape plants.

[0011] Compared with existing technologies, the watershed water environment management method of this application has the following beneficial effects:

[0012] It can remove foul-smelling silt from the riverbed, quickly improve the water environment of the basin, and eliminate the need for long-distance silt transportation. It will not affect the environment of other areas or cause secondary damage to the environment. The support frame is set on the valley slope, and the silt and the valley slope form an integrated structure. It can block or filter the previously polluted rainwater, preventing rainwater from carrying a large amount of impurities into the river channel of the basin. Plants can be used to remove heavy metals from the silt, so that the silt can be rationally utilized or replaced with landscape plants to make the landscape of the basin more beautiful.

[0013] According to a second aspect of this application, a watershed water environment management device is provided, comprising a first support frame, a first suspension column, and a first suspension cable. The first support frame has a first mounting part and a first adjustment part. The first mounting part is installed on a valley slope, and the first adjustment part is suspended from the first suspension column by the first suspension cable. This design makes fuller use of the watershed's environmental resources, including sunlight and water resources, without causing excessive impact on the environment of other areas. The height of the first support frame can be adjusted by the first suspension cable, allowing it to be installed in different locations and adapted to different watershed conditions. The first support frame can be planted with vegetation to purify silt.

[0014] In one embodiment, the first support frame includes multiple connecting plates, which are hinged end-to-end via hinge shafts, allowing adjacent connecting plates to rotate relative to each other. This identical structure design can adapt to different riverbeds and facilitates the adjustment of the first support frame. Most riverbeds have a certain curvature, and the rotatable connecting plates can better adapt to this curvature. The first support frame is made of steel and has a large mass, allowing it to sink under gravity and be inserted more precisely into the bottom of the riverbed for more thorough silt removal. In addition, the first support frame's ability to bend to a certain arc also allows for better water storage and prevents rainwater and sewage from directly entering the riverbed.

[0015] In one embodiment, support plates are provided on both sides of the connecting plate. The upper and lower ends of the support plates are located on both sides of the hinge shaft. When the upper ends of adjacent support plates abut, the connecting plate is restricted from rotating in a first direction. When the lower ends of adjacent support plates abut, the connecting plate is restricted from rotating in a second direction. This design makes the first support frame easier to move, and the adjacent connecting plates will not bend to an excessive angle, affecting the use of the first support frame.

[0016] In one embodiment, a venting pipe is provided above the connecting plate and is installed on the connecting frame. Because silt has poor aeration, it is unsuitable for planting some plants. However, by setting up venting pipes, the aeration performance of the silt can be greatly increased, allowing for a wider range of plant species to be planted in the silt and resulting in more vigorous plant growth.

[0017] In one embodiment, the first support frame is installed on the valley slope in a manner that allows it to rotate relative to the valley slope. The height of the adjustment unit can be adjusted by adjusting the length of the first suspension cable. In this way, for some watersheds where the water level difference is large in different seasons, the height of the first support frame can be adjusted according to the water level limit in different seasons, reducing the impact on the first support frame when the water level rises and preventing the first support frame from being damaged.

[0018] In one embodiment, the watershed water environment treatment device further includes an insertion device and a sludge scraper. The insertion device is equipped with a mounting frame, which has a track. The track uses rollers and / or rolling rollers to limit the movement of the support plate. The mounting frame can be equipped with rollers and / or rolling rollers. The mounting frame is equipped with a drive device or uses an external drive structure to drive the first support frame to move along the track. The sludge scraper has an open lower end face and a front end face. The sludge scraper has a traction part and a lifting part. The traction part is located at the front end of the sludge scraper, allowing the sludge scraper to be moved horizontally by dragging the traction part. The lifting part is located above the center of gravity of the sludge scraper, allowing the sludge scraper to be lifted by the lifting part. In this way, a crane can be used to lift the sludge scraper to the rear of the first support frame, and then a winch can be used to drag the sludge scraper to move the silt above the first support frame. After that, the crane can be used to move the sludge scraper away, and the first support frame can be suspended to a certain height using a first suspension cable. The whole process only takes a few minutes and is highly efficient.

[0019] According to a third aspect of this application, a watershed water environment management device is provided, comprising a second support frame and a second floating block. The second support frame has a second mounting part and a second adjusting part. The second mounting part is installed on the valley slope, and the second adjusting part is installed on the second floating block. The second floating block adopts a hollow design or is made of low-density material to provide a certain buoyancy. The second support frame can float on the water surface by relying on the second floating block. This design allows for the planting of aquatic plants, and in areas with a relatively large water surface area in some watersheds, the water surface area can be utilized to the maximum extent.

[0020] According to the fourth aspect of this application, a watershed water environment management device is provided, comprising multiple first support frames and multiple second support frames. The installation height of the first support frames is higher than that of the second support frames, and there is a certain gap between adjacent first support frames. The first and second support frames are installed alternately. Each first support frame has a first mounting part and a first adjusting part. The first mounting part is installed on the valley slope, and the first adjusting part is suspended from a first suspension column by a first suspension cable. Each second support frame has a second mounting part and a second adjusting part. The second mounting part is installed on the valley slope, and the second adjusting part is installed on a second floating block. The second floating block adopts a hollow design or is made of low-density material to provide a certain buoyancy. The second support frame can float on the water surface by relying on the second floating block. This allows for more efficient use of space and the planting of different types of plants, resulting in a more complete ecosystem.

[0021] According to the fifth aspect of this application, a method for watershed water environment management is provided. Using the aforementioned watershed water environment management device, firstly, a first support frame is inserted under the riverbed silt using an insertion device; secondly, a silt scraper is hoisted to the rear of the first support frame using a crane, and a winch is used to pull the silt scraper forward to scrape the silt above the first support frame; thirdly, the first support frame is raised to a certain height using a first suspension cable and left to dry for a certain period of time; then, at a suitable time for sowing or transplanting, the clumps of silt are broken up, and after sowing or transplanting, a ventilator is inserted; finally, vegetation is maintained regularly or irregularly, and the heavy metal content in the silt is tested. After the test results are satisfactory, the silt is transferred for reuse or landscape plants are planted on the first support frame. This method can directly complete the silt treatment without the need for excavators or other equipment, fully utilizes the spatial resources of the aquatic environment, avoids pollution to other environments, and is more environmentally friendly as it eliminates the need for chemical agents.

[0022] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of this application, nor is it intended to limit the scope of this application. Other features of this application will become readily apparent from the following description. Attached Figure Description

[0023] The above and other objects, features, and advantages of exemplary embodiments of this application will become readily apparent from the following detailed description taken in conjunction with the accompanying drawings. Several embodiments of this application are illustrated in the drawings by way of example and not limitation, in which:

[0024] In the accompanying drawings, the same or corresponding reference numerals indicate the same or corresponding parts.

[0025] Figure 1 A three-dimensional schematic diagram of the arc-suspended state of the watershed water environment treatment device according to an embodiment of this application is shown;

[0026] Figure 2A cross-sectional schematic diagram of the watershed water environment treatment device in the arc suspension state according to an embodiment of this application is shown;

[0027] Figure 3 This paper shows a cross-sectional schematic diagram of the watershed water environment treatment device in a linear suspension state according to an embodiment of this application;

[0028] Figure 4 This paper shows a schematic diagram of the installation of the vent pipe and connecting frame of the watershed water environment treatment device according to an embodiment of this application;

[0029] Figure 5 This paper shows a three-dimensional schematic diagram of the relative positions of the insertion device and the sludge scraper of the watershed water environment treatment device according to an embodiment of this application;

[0030] Figure 6 A schematic diagram of the interleaving device of the watershed water environment treatment device according to an embodiment of this application is shown;

[0031] Figure 7 This diagram shows a schematic of the insertion device of the watershed water environment treatment device according to an embodiment of this application, with the right outer plate removed.

[0032] Figure 8 A three-dimensional schematic diagram of the sludge scraper bucket of the watershed water environment treatment device according to an embodiment of this application is shown;

[0033] Figure 9 This shows a schematic diagram of the installation state of the second floating block of the watershed water environment treatment device according to Embodiment 3 of this application;

[0034] Figure 10 This diagram illustrates the separation state of the second floating block in the watershed water environment treatment device of Embodiment 3 of this application.

[0035] Figure 11 This diagram illustrates the horizontal floating state of the watershed water environment treatment device according to Embodiment 3 of this application.

[0036] Figure 12 This paper shows a three-dimensional schematic diagram of the staggered arrangement of the first and second support frames of the watershed water environment treatment device according to Embodiment 4 of this application;

[0037] Figure 13 This paper shows a schematic cross-sectional view of the watershed water environment treatment device in Embodiment 5 of this application in an interleaved state.

[0038] Figure 14 This paper shows a schematic cross-sectional view of the sludge scraping state of the watershed water environment treatment device in Embodiment 5 of this application;

[0039] Figure 15 This paper shows a cross-sectional schematic diagram of the watershed water environment treatment device in the lifting state according to Embodiment 5 of this application;

[0040] Figure 16A schematic cross-sectional view of the watershed water environment treatment device in the suspended state of Embodiment 5 of this application is shown;

[0041] Figure 17 A schematic cross-sectional view of the watershed water environment treatment device of Embodiment 5 of this application after sowing is shown.

[0042] Explanation of the labels in the diagram:

[0043] 1. Support frame; 2. Insertion device; 3. Valley slope; 4. Riverbed; 5. Valley shoulder; 6. First suspension column; 7. First suspension cable; 8. Traction rope; 9. Scraper bucket; 10. Second support frame; 11. First support frame; 12. Connecting plate; 13. Support plate; 14. First mounting part; 15. First adjustment part; 16. Mounting bracket; 17. Hinge shaft; 18. Vent pipe; 19. Connecting frame; 20. Air hole; 21. Mounting frame; 22. Roller ; 23. Rolling roller; 24. First shaft; 25. Second shaft; 26. Drive wheel; 27. Limiting groove; 40. Silt; 91. Traction unit; 92. Lifting unit; 93. Wing plate; 94. Top plate; 95. Tail plate; 101. Second mounting unit; 102. Second adjustment unit; 103. Second floating block; 104. First through hole; 105. Second through hole; 211. Left outer plate; 212. Right outer plate; 213. Left inner plate; 214. Right inner plate. Detailed Implementation

[0044] To make the objectives, features, and advantages of this application more apparent and understandable, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0045] Example 1:

[0046] like Figure 1 and Figure 2As shown, the watershed water environment management method in this embodiment mainly considers the removal of heavy metals. For silt 40 without heavy metals, it can be directly transferred and utilized without planting metal hyperaccumulating plants. The watershed water environment management method includes at least the following steps: using an excavator to dig out the silt 40 containing heavy metals from the riverbed 4 and place it on a support frame 1. The support frame 1 is set on the valley slope 3 beside the riverbed 4, making full use of the watershed space. The support frame 1 extends from the valley slope 3 towards the riverbed 4; multiple ventilation holes are opened in the silt 40, which can be made using sticks. Ventilation holes allow for faster drying. Allow the silt to air dry for a certain period, depending on the weather. If the silt contains a high amount of microorganisms and has a strong odor, turn it over several times during drying to ensure the removal of a large number of pathogens. Measure the content of different heavy metals in the silt and select suitable metal hyperaccumulator seeds or granules containing metal hyperaccumulator seeds to sow on the silt, or transplant metal hyperaccumulators. Prune or clean the silt periodically depending on its growth. Once the heavy metal content in the silt is within acceptable limits, the silt can be reused or replaced with other landscape plants.

[0047] Hyperaccumulating plants, also known as superaccumulators, can restore ecological environments and remove heavy metals from soil. Major metal hyperaccumulators include *Arundinaria superba*, *Nephrolepis cordifolia*, *Mustard Tree*, *Sedum aizoon*, *Pteris vittata*, and *Solanum nigrum*. These plants help remediate contaminated soil by adsorbing and accumulating heavy metals. After hyperaccumulators grow on land contaminated with heavy metals, their disposal methods must be considered. Various treatment methods exist, commonly including incineration, ash disposal, pyrolysis, gasification, hydrothermal treatment, and liquid-phase extraction. Different plants can absorb different metals; for example, *Pteris vittata* can accumulate arsenic, while *Sedum aizoon* is a hyperaccumulator of zinc, cadmium, and lead. Therefore, it is advisable to first test the heavy metal content of the sludge and select appropriate plants based on the levels of heavy metals. Transferring sludge containing heavy metals to other locations will also impact the environment there; therefore, separating the heavy metals is the best option. Plant absorption and separation of heavy metals is energy-efficient and environmentally friendly. Given the ample space available in river channels, this method can comprehensively utilize various resources.

[0048] Example 2:

[0049] like Figure 1 and Figure 2As shown, the watershed water environment treatment device of this embodiment can be used in Embodiment 1, and can also treat sludge 40 that does not exceed heavy metal standards, such as black and smelly sludge 40. The watershed water environment treatment device includes a first support frame 11, a first suspension column 6, and a first suspension cable 7. The first support frame 11 is provided with a first mounting part 14 and a first adjustment part 15. The first mounting part 14 is installed on the valley slope 3, and the first adjustment part 15 is suspended from the first suspension column 6 by the first suspension cable 7. An installation bracket 16 is provided on the valley slope 3, and the first mounting part 14 is installed on the installation bracket 16. The first suspension column 6 can be set on the valley shoulder 5. To ensure the suspension load of the first suspension column 6, a traction rope 8 can be provided at the upper end of the first suspension column 6. The first suspension column 6 can be manufactured and buried using the process of a utility pole, that is, using a reinforced concrete structure. The first suspension cable 7 is a steel cable. The first support frame 11 is made of steel and has been treated with anti-rust treatment, such as galvanizing, phosphate treatment, painting, or a plastic isolation layer.

[0050] like Figure 1 As shown, in one embodiment, the first support frame 11 includes a plurality of connecting plates 12, the ends of which are hinged together by hinge shafts 17, allowing adjacent connecting plates 12 to rotate relative to each other. Figure 2 As shown, by adjusting the length of the first suspension cable 7, the first support frame 11 can form an arc-shaped structure. In this way, during heavy rain, foreign objects carried by rainwater can be blocked or absorbed by the vegetation on the first support frame 11, and during light rain, the concave structure can have a certain water storage function. Figure 3 As shown, by adjusting the length of the first suspension cable 7, the first support frame 11 can form a planar structure, which makes planting easier.

[0051] like Figure 1 As shown, in one embodiment, support plates 13 are provided on both sides of the connecting plate 12 to form a space for accommodating silt 40. The support plates 13 are perpendicular to the connecting plate 12. The upper and lower ends of the support plates 13 are located on both sides of the hinge shaft 17. When the upper ends of adjacent support plates 13 abut, the connecting plate 12 is restricted from rotating in the first direction. When the lower ends of adjacent support plates 13 abut, the connecting plate 12 is restricted from rotating in the second direction.

[0052] like Figure 3 and Figure 4 As shown, in one embodiment, a ventilator 18 is provided above the connecting plate 12, and the ventilator 18 is installed on the connecting frame 19. The side wall of the ventilator 18 is provided with a plurality of air holes 20, and the lower end of the ventilator 18 can be designed with a sharp structure to facilitate insertion into the silt 40, so that the silt 40 can increase the oxygen content and facilitate plant growth.

[0053] like Figure 2 and Figure 3As shown, in one embodiment, the first support frame 11 is mounted on the valley slope 3 in a manner that allows it to rotate relative to the valley slope 3. The height of the adjustment part can be adjusted by adjusting the length of the first suspension cable 7. The connecting plate 12 can be arranged along an arc or along a straight line.

[0054] like Figure 5 , Figure 6 and Figure 7 As shown, in one embodiment, the watershed water environment treatment device further includes an insertion device 2 and a sludge scraper 9. The insertion device 2 is equipped with a mounting frame 21, which has a track. The track uses rollers 22 and / or rolling rollers 23 to limit the support plate 13, allowing the first support frame 11 to move or rotate along the track. The track can be a straight track or an arc track. The mounting frame 21 can be equipped with rollers 22 and / or rolling rollers 23. The mounting frame 21 is equipped with a driving device or uses an external driving structure to drive the first support frame 11 to move along the track. The upper end of the mounting frame 21 is equipped with a first shaft 24 and a second shaft 25. The size and spacing of the first shaft 24 and the second shaft 25 are the same as the size and spacing of the two shafts on the excavator bucket, so that the insertion device 2 can be directly installed on the excavator's boom, thus simplifying the construction equipment. To facilitate insertion into the silt 40, the connecting plate 12 and the support plate 13 at the head are provided with sharper angles to reduce resistance during insertion.

[0055] like Figure 5 and Figure 8 As shown, the sludge scraper 9 has an open lower end face and a front end face. The sludge scraper 9 has a traction part 91 and a hoisting part 92. The traction part 91 is located at the front end of the sludge scraper 9, allowing the sludge scraper 9 to be moved horizontally by dragging the traction part 91. The hoisting part 92 is located above the center of gravity of the sludge scraper 9, allowing the sludge scraper 9 to be hoisted by the hoisting part 92. The lower end of the sludge scraper 9 is flat. The left and right ends of the sludge scraper 9 have wing plates 93. The rear end of the sludge scraper 9 has a tail plate 95. The upper end of the sludge scraper 9 has a top plate 94. The hoisting part 92 is located on the top plate 94, and the traction part 91 is located on the wing plates 93. The wing plates 93 on both sides extend from back to front with the spacing gradually increasing. To ensure the strength of the wing plates 93, the top plate 94 and the adjacent position of the wing plates 93 locally extend forward to form an L-shaped cross-section, which makes the wing plates 93 more rigid and less prone to deformation.

[0056] like Figure 6 and Figure 7As shown, in one embodiment, the mounting frame 21 is equipped with a drive wheel 26, which is driven by a motor or hydraulic motor. The drive wheel 26 is coaxially arranged with one or two rollers 22. The mounting frame 21 includes a left outer plate 211, a right outer plate 212, a left inner plate 213, and a right inner plate 214. A rolling roller 23, a first shaft 24, and a second shaft 25 are arranged between the left outer plate 211 and the right outer plate 212. The rollers 22 are arranged between the left outer plate 211 and the left inner plate 213 or between the right outer plate 212 and the right inner plate 214. The rollers 22 and the rolling rollers 23 can be arranged alternately. Both the rollers 22 and the rolling rollers 23 can guide the support frame 1 to move or rotate, and can be used interchangeably. Both the rollers 22 and the rolling rollers 23 can be provided with limiting grooves 27 to limit the position of the support plate 13. To ensure that the support plate 13 moves or rotates smoothly along the track, the width of the support plate 13 is the same at all positions.

[0057] like Figure 6 and Figure 7 As shown, in one embodiment, the track is an arc-shaped track, and the connecting plate 12 and the support plates 13 on both sides of the connecting plate 12 are all designed in an arc shape. The corresponding positions of the left outer plate 211, right outer plate 212, left inner plate 213, and right inner plate 214 are also designed in an arc shape. The support plates 13 can move or rotate along the arc shape on the track, which makes it easier for the first support frame 11 to be inserted under the silt 40 in the riverbed 4. The valley slope 3 can also be artificially constructed to form the same arc shape, so that the silt 40 can be cleaned more thoroughly.

[0058] Example 3:

[0059] like Figure 9 , Figure 10 and Figure 11As shown, the watershed water environment management device includes a second support frame 10 and a second floating block 103. The second support frame 10 has a second mounting part 101 and a second adjusting part 102. The second mounting part 101 is installed on the valley slope 3, and the second adjusting part 102 is installed on the second floating block 103. The second floating block 103 is hollow or made of low-density material to provide buoyancy, allowing the second support frame 10 to float on the water surface. Emergent plants, such as calamus, variegated reed, or vetiver, are planted on the second floating block 103. The low-density material can be a polymer material such as foam or a natural material such as wood. The second support frame 10 can also be made of plastic. The structure of the second support frame 10 can adopt the same structure as the first support frame 11, only requiring the provision of installation positions for the second floating block 103. The second support frame 10 includes multiple connecting plates 12, which are hinged end-to-end by hinge shafts 17, allowing adjacent connecting plates 12 to rotate relative to each other. Support plates 13 are provided on both sides of the connecting plate 12. The support plates 13 are perpendicular to the connecting plate 12. The upper and lower ends of the support plates 13 are located on both sides of the hinge shaft 17. When the upper ends of adjacent support plates 13 abut, the connecting plate 12 is restricted from rotating in a first direction. When the lower ends of adjacent support plates 13 abut, the connecting plate 12 is restricted from rotating in a second direction. The connecting plate 12 has multiple first through holes 104, and the second floating block 103 has multiple second through holes 105. The positions of the first through holes 104 and the second through holes 105 are correspondingly arranged, so that the roots of emergent plants can pass through the first through holes 104 and the second through holes 105 to reach the water.

[0060] The second support frame 10 can operate using the insertion device 2 and the sludge scraper 9 from Embodiment 2. Therefore, the connecting plate 12 and the support plate 13 are designed in an arc shape. In addition, the second floating block 103 is detachable. When the second support frame 10 is inserted into the bottom of the silt 40 using the insertion device 2, the second floating block 103 can be removed first. After collecting the silt 40, the second support frame 10 is lifted by a crane. Then, the second floating block 103 is installed and placed on the water surface, allowing it to rise and fall with the water level. The second mounting part 101 is hinged to the valley slope 3, allowing the second support frame 10 to rotate within a certain range.

[0061] Example 4:

[0062] like Figure 12As shown, the watershed water environment treatment device is equipped with multiple support frames 1. The support frame 1 includes a first support frame 11 and a second support frame 10. The first support frame 11 can use the structure in Embodiment 2, and the second support frame 10 can use the structure in Embodiment 3. The installation height of the first support frame 11 is higher than the installation height of the second support frame 10. There is a certain gap between adjacent first support frames 11. The first support frame 11 and the second support frame 10 are installed alternately. The first support frame 11 is provided with a first mounting part 14 and a first adjustment part 15. The first mounting part 14 is installed on the valley slope 3, and the first adjustment part 15 is suspended from the first suspension column 6 by a first suspension cable 7. The second support frame 10 is provided with a second mounting part 101 and a second adjustment part 102. The second mounting part 101 is installed on the valley slope 3, and the second adjustment part 102 is installed on a second floating block 103. The second floating block 103 adopts a hollow design or is made of low-density material so that the second floating block 103 can provide a certain buoyancy. The second support frame 10 can float on the water surface by relying on the second floating block 103. The main difference between the first support frame 11 and the multiple second support frames 10 is that the second support frame 10 relies on the second floating block 103 for support, while the first support frame 11 relies on the first suspension cable 7 for support.

[0063] Example 5:

[0064] The watershed water environment management method uses the watershed water environment management device of Example 2 or 4, such as... Figure 13 As shown, firstly, the first support frame 11 is inserted into the silt 40 of the riverbed 4 using the insertion device 2. The insertion device 2, referencing the bucket design of an excavator, can be directly installed on the excavator's boom, or it can refer to the clamping structure design of other engineering machinery with booms similar to excavators. Driven by the drive device, the insertion device 2 inserts the first support frame 11 into the silt 40; Figure 14 As shown, next, a crane is used to hoist the scraper bucket 9 to the rear of the first support frame 11 using steel cables fixed to the hoisting part 92. A winch is then used to pull the scraper bucket 9 forward using steel cables fixed to the traction part 91, scraping the silt 40 above the first support frame 11. Figure 15 and Figure 16 As shown, again, the first support frame 11 is raised to a certain height by the first suspension cable 7, and then left to dry for a certain period of time; as Figure 17 As shown, then, select a suitable time for sowing or transplanting, such as March, break up the clumps of silt 40, and after sowing or transplanting, insert multiple air-permeable pipes 18 simultaneously through the connecting frame 19; finally, maintain the vegetation regularly or irregularly, and test the heavy metal content in the silt 40. After the test is qualified, transfer the silt 40 for use or replace the landscape plants planted on the first support frame 11.

[0065] It should be understood that the various forms of processes shown above can be used to rearrange, add, or delete steps. For example, the steps described in this application can be executed in parallel, sequentially, or in different orders, as long as the desired result of the technical solution of this application can be achieved, and this is not limited herein.

[0066] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified. "Above," "below," "left," "right," "front," and "back" are relative positions and can be adjusted according to specific circumstances in actual use.

[0067] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A method for watershed water environment management, characterized in that, At least the following steps are included: Silt (40) is dredged from the riverbed (4) and placed on a support frame (1), which is set on the valley slope (3) next to the riverbed (4) and extends from the valley slope (3) to the riverbed (4); Multiple ventilation holes (20) are opened on the silt (40) of the support frame (1) and the silt is dried for a certain period of time; Measure the content of different heavy metals in the silt (40) on the support frame (1), select suitable metal hyperaccumulating plant seeds or particles with metal hyperaccumulating plant seeds, sow them on the silt (40), or transplant metal hyperaccumulating plants; Depending on the growth of the plants, they are pruned or cleaned from time to time. After the heavy metals in the silt (40) are tested and found to be qualified, the silt (40) is transferred for use or replaced with landscape plants. The watershed water environment management device used in the watershed water environment management method includes a first support frame (11), a first suspension column (6) and a first suspension cable (7). The first support frame (11) is provided with a first installation part (14) and a first adjustment part (15). The first installation part (14) is installed on the valley slope (3), and the first adjustment part (15) is suspended from the first suspension column (6) by the first suspension cable (7). The first support frame (11) includes multiple connecting plates (12), which are hinged end to end by a hinge shaft (17) so that adjacent connecting plates (12) can rotate relative to each other; a vent pipe (18) is provided above the connecting plate (12), and the vent pipe (18) is installed on the connecting frame (19).

2. A watershed water environment treatment device, characterized in that, The first support frame (11), the first suspension column (6), and the first suspension cable (7) are provided. The first support frame (11) is provided with a first mounting part (14) and a first adjusting part (15). The first mounting part (14) is installed on the valley slope (3). The first adjusting part (15) is suspended from the first suspension column (6) by the first suspension cable (7). The first support frame (11) includes a plurality of connecting plates (12). The plurality of connecting plates (12) are hinged end to end by a hinge shaft (17) so that adjacent connecting plates (12) can rotate relative to each other. The watershed water environment management device also includes a second support frame (10) and a second floating block (103). The second support frame (10) is provided with a second mounting part (101) and a second adjustment part (102). The second mounting part (101) is installed on the valley slope (3), and the second adjustment part (102) is installed on the second floating block (103). The second floating block (103) adopts a hollow design or is made of low-density material, so that the second floating block (103) can provide a certain buoyancy. The second support frame (10) can float on the water surface by relying on the second floating block (103).

3. The watershed water environment management device according to claim 2, characterized in that, The connecting plate (12) is provided with support plates (13) on both sides. The upper and lower ends of the support plates (13) are located on both sides of the hinge shaft (17). When the upper ends of adjacent support plates (13) abut, the connecting plate (12) is restricted from rotating in the first direction. When the lower ends of adjacent support plates (13) abut, the connecting plate (12) is restricted from rotating in the second direction.

4. The watershed water environment management device according to claim 3, characterized in that, A vent pipe (18) is provided above the connecting plate (12), and the vent pipe (18) is installed on the connecting frame (19).

5. The watershed water environment management device according to claim 4, characterized in that, The first support frame (11) is mounted on the valley slope (3) in a manner that allows it to rotate relative to the valley slope (3), and the height of the adjustment part can be adjusted by adjusting the length of the first suspension cable (7).

6. The watershed water environment management device according to claim 4, characterized in that, The watershed water environment treatment device also includes an insertion device (2) and a sludge scraper (9). The insertion device (2) is equipped with a mounting frame (21). The mounting frame (21) is equipped with a track. The track uses rollers (22) and / or rolling rollers (23) to limit the position of the support plate (13). The mounting frame (21) can install the rollers (22) and / or the rolling rollers (23). The mounting frame (21) is equipped with a driving device or can be driven by an external driving structure. The first support frame (11) moves along the track. The sludge scraper (9) has an open lower end face and a front end face. The sludge scraper (9) has a traction part (91) and a hoisting part (92). The traction part (91) is located at the front end of the sludge scraper (9), so that by dragging the traction part (91), the sludge scraper (9) can be translated. The hoisting part (92) is located above the center of gravity of the sludge scraper (9), so that the sludge scraper (9) can be hoisted by the hoisting part (92).

7. The watershed water environment management device according to claim 2, characterized in that, The installation height of the first support frame (11) is higher than that of the second support frame (10). There is a certain gap between adjacent first support frames (11). The first support frame (11) and the second support frame (10) are installed alternately. The first support frame (11) is provided with a first mounting part (14) and a first adjustment part (15). The first mounting part (14) is installed on the valley slope (3). The first adjustment part (15) is suspended from the first suspension column (6) by the first suspension cable (7). The second support frame (10) is provided with a second mounting part (101) and a second adjustment part (102). The second mounting part (101) is installed on the valley slope (3). The second adjustment part (102) is installed on the second floating block (103). The second floating block (103) adopts a hollow design or is made of low-density material, so that the second floating block (103) can provide a certain buoyancy. The second support frame (10) can float on the water surface by relying on the second floating block (103).

8. A method for watershed water environment management, characterized in that, Using the watershed water environment management device as described in claim 6 First, the first support frame (11) is inserted under the silt (40) of the riverbed (4) using the insertion device (2); Next, a crane is used to lift the sludge scraper (9) to the back of the first support frame (11), and a winch is used to pull the sludge scraper (9) forward to scrape the silt (40) above the first support frame (11); Next, the first support frame (11) is raised to a certain height by the first suspension cable (7) and left to dry for a certain period of time; Afterwards, select an appropriate time for sowing or transplanting, break up the clumps of silt (40), and insert a ventilator (18) after sowing or transplanting. Finally, the vegetation is maintained regularly or irregularly, and the heavy metal content in the silt (40) is tested. After the test is qualified, the silt (40) is transferred for use or the landscape plants are replaced and planted on the first support frame (11).

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