In-situ treatment method for organic sediment of rivers and lakes

Abstract

The application discloses a kind of river and lake organic bottom mud in-situ treatment method, using bottom mud treatment equipment, bottom mud treatment equipment includes floating island, engineering bacteria delivery unit, drive unit, method includes the following steps: the bottom mud treatment equipment that has been planted aquatic plant is placed in water;Each vertical hard pipe is lowered and each vertical hard pipe is inwards contracted;Engineering bacteria is poured into the feed inlet of Z-type elevator, engineering bacteria is discharged from the discharge port of Z-type elevator, and is released from vertical hard pipe;Make bottom mud treatment equipment self-rotating 90 ° by drive unit;Each vertical hard pipe is moved outward, and then repeat bottom mud treatment equipment self-rotation;Make bottom mud treatment equipment move to the position of water body not carried out organic bottom mud in-situ treatment, then repeat processing;Supplement engineering bacteria;After completing organic bottom mud in-situ treatment, the floating island is fixed in water.The application can automatically release engineering bacteria in water body close to the height of organic bottom mud, degrade bottom mud, and has certain moving ability, high work efficiency, and can long-term purify water body.

Description

Technical Field

[0001] This invention relates to the field of river and lake pollution control technology, and in particular to an in-situ treatment method for organic sediment in rivers and lakes. Background Technology

[0002] With rapid economic development, water pollution incidents occur frequently. Water pollution can be categorized by its location, including sediment pollution, overlying water pollution, and surface air pollution. Among these, the most important aspect of water pollution control is the treatment of sediment pollution. Most sediment in rivers and lakes is organic. In the past, organic sediment was often removed from the water and treated centrally. However, the microorganisms in organic sediment bind to water within it, making dewatering difficult at sludge treatment plants. Later, engineered bacteria specifically designed to degrade organic sediment were developed, enabling in-situ treatment. However, current technology simply involves releasing engineered bacteria into the water. When treating rivers, the engineered bacteria do not easily settle and bind with the sediment due to water flow. When treating lakes, releasing engineered bacteria over large areas of water is quite cumbersome. Summary of the Invention

[0003] To address the aforementioned problems, this invention provides an in-situ treatment method for organic sediment in rivers and lakes. This method can automatically release engineered bacteria in the water near the height of the organic sediment to degrade the sediment. It also has a certain degree of mobility, high working efficiency, and can purify water bodies for a long time, delaying the formation of organic matter into sediment.

[0004] To achieve the objectives of this invention, the following solution is adopted:

[0005] A method for in-situ treatment of organic sediment from rivers and lakes, employing sediment treatment equipment, which includes:

[0006] Floating islands, on which aquatic plants are grown;

[0007] The engineered bacteria delivery unit is partially located outside the floating island and partially inserted into the floating island. It includes a delivery component and a dragging component. The delivery component is used to deliver engineered bacteria and includes a Z-shaped support on one side of the floating island. A Z-shaped elevator is provided on the bottom horizontal edge of the Z-shaped support. A hopper is provided below the discharge port of the Z-shaped support. An extension pipe is provided at the lower end of the hopper. Multiple inclined rigid pipes are provided at the lower end of the extension pipe, which are respectively inserted into the floating island. A telescopic flexible hose is provided at the lower end of the inclined rigid pipe, and a vertical rigid pipe is provided at the lower end of the hose. The dragging component is used to change the delivery point of the engineered bacteria by dragging the vertical rigid pipe.

[0008] The drive unit, located on both sides of the floating island, is used for moving and rotating the bottom sediment treatment equipment;

[0009] The method includes the following steps:

[0010] S100: Place the sediment treatment equipment with planted aquatic plants in the water;

[0011] S200: Lower each vertical rigid tube by dragging the component and retract each vertical rigid tube inward to its limit position;

[0012] S300: Pour engineered bacteria into the feed inlet of the Z-type elevator. The engineered bacteria fall into the discharge hopper from the discharge outlet of the Z-type elevator. The engineered bacteria are released from the vertical rigid pipe through the extension pipe, the inclined rigid pipe, and the telescopic flexible pipe in sequence.

[0013] S400: During the process of releasing engineered bacteria from the vertical rigid pipe, the bottom sediment treatment equipment is rotated 90° by the drive unit.

[0014] S500: Move each vertical rigid tube outward a predetermined distance by dragging the component, and then repeat S400 until each vertical rigid tube is stretched outward to its limit position.

[0015] S600: The bottom sediment treatment equipment is moved to the location in the water body where the organic bottom sediment has not been treated in situ through the drive unit. Then, the steps S400~S500 are repeated to carry out the treatment. When all the engineered bacteria in the Z-type elevator fall into the hopper, the treatment is stopped and engineered bacteria are added to the feed port of the Z-type elevator.

[0016] S700: After completing the in-situ treatment of organic sediment, the floating island is fixed in the water.

[0017] Furthermore, the sediment treatment equipment also includes a bottom scraping assembly located on one side of the floating island, including an L-shaped mounting frame located on one side of the floating island. The outer side of the vertical side of the L-shaped mounting frame is provided with a vertically arranged third linear mechanism. The lower end of its output shaft is provided with an extension rod, and the lower end of the extension rod is provided with a scraper for scraping up the sediment. Before S400, the scraper is first lowered by the third linear mechanism, and then the sediment treatment equipment is rotated at least one revolution by the drive unit, so that the surface sediment is scraped up.

[0018] Furthermore, an L-shaped bracket is mounted on the top horizontal edge of the Z-shaped bracket, and a slide rail is provided at the upper end of the L-shaped bracket, with the lower end of the slide rail located above the feed inlet of the Z-shaped elevator.

[0019] In S100, when in-situ treatment of organic sediment in rivers is carried out, an L-shaped support is installed on the upper end of the Z-shaped support.

[0020] In S300, when treating organic sediment in situ in rivers, the sediment treatment equipment is first moved to the bank by the drive unit, and personnel pour in engineered bacteria through the slide. When treating organic sediment in situ in lakes, personnel take boats to pour in engineered bacteria directly.

[0021] Furthermore, the dragging component includes a first linear mechanism vertically mounted on the upper surface of the floating island, with a U-shaped frame at the upper end of its output shaft, two second linear mechanisms at the lower ends of the two long sides of the U-shaped frame, an L-shaped hanger at one end of its output shaft, and a sleeve fixedly fitted onto the outer periphery of the vertical rigid pipe at one end of the short side of the L-shaped hanger.

[0022] In S200, the U-shaped frame is lowered by the first linear mechanism, which lowers the sleeve and drives the vertical rigid tube to lower. The sleeve is pulled by the second linear mechanism, which drives the vertical rigid tube to be pulled closer to the axis of the extension tube.

[0023] In S500, the second linear mechanism pulls the sleeve, which in turn drives the vertical rigid tube to move away from the axis of the extension tube.

[0024] Furthermore, the drive unit includes a pair of drive components. Each drive component includes a base located on one side of the floating island. The upper end of the base is provided with a rotary motor whose output direction faces outward from the floating island. One end of its output shaft is provided with a rotating part. Multiple paddles are arranged in a circular array on the outer periphery of the rotating part. When the paddles of the two drive components rotate in the same direction, the floating island moves forward. When the paddles of the two drive components rotate in opposite directions, the floating island rotates.

[0025] Furthermore, a pair of vertical frames are provided on the outer sides of the two long sides of the U-shaped frame, and the second linear mechanism is located at the lower end of the vertical frames.

[0026] Furthermore, the floating island is equipped with a main frame, within which are multiple planting troughs for planting aquatic plants. The bottom wall of each planting trough has root holes extending to the lower end of the floating island, allowing the roots of the aquatic plants to pass through. The floating island has four slanted openings extending to the bottom, through which slanted rigid pipes are inserted. The four junctions on the four sides of the floating island each have a fixing part extending outwards. The fixing part has fixing holes extending vertically through it, for passing ropes to secure the floating island. Several hollow boxes are also provided on the four sides of the floating island to improve its buoyancy. In S700, one end of the rope fixed to the bottom of the water is passed through the fixing hole and tightened.

[0027] Furthermore, the aquatic plants used include one or more of the following: Sagittaria sagittifolia, Typha orientalis, Nelumbo nucifera, Canna indica, Umbrella simonii, and Iris tectorum.

[0028] Furthermore, the Z-shaped bracket has multiple first screw holes on both sides of the top horizontal edge, and the L-shaped bracket has multiple second screw holes on both sides of the horizontal edge. Multiple connecting plates are mounted on both sides of the Z-shaped bracket. The inner side of the connecting plate fits the outer side of the L-shaped bracket. A pair of through holes matching the first screw holes and the second screw holes are respectively provided on the connecting plate.

[0029] The beneficial effects of this technical solution are as follows:

[0030] 1. To achieve regular and long-term continuous in-situ treatment of organic sediment in rivers and lakes: On the one hand, by regularly releasing engineered bacteria, the existing organic sediment can be degraded relatively quickly. On the other hand, the engineered bacteria release unit and drive unit are set on the floating island. The roots of the aquatic plants on the floating island can absorb nutrients in the water and adsorb existing organic matter in the water, thereby reducing the generation and sedimentation of organic sediment in the long term.

[0031] 2. The bottom scraping component allows the engineered bacteria to be placed close to the surface of the sediment, which is beneficial for the sedimentation and combination of engineered bacteria when treating organic sediment in rivers. The dragging component can increase the coverage area of ​​the engineered bacteria in one application. In addition, the drive unit can automatically move the sediment treatment equipment, making it convenient to release engineered bacteria over a large area of ​​water in rivers or lakes.

[0032] 3. When treating river sediment with organic sediment, a chute for feeding engineered bacteria can be installed, allowing engineered bacteria to be added to the riverbank. Attached Figure Description

[0033] Figure 1 The main flowchart of the in-situ treatment method for organic sediment in rivers and lakes according to an embodiment of this application is shown.

[0034] Figure 2 An overall perspective view of the sediment treatment equipment in an embodiment of this application is shown.

[0035] Figure 3 A perspective view showing the positional relationship between the floating island, Z-shaped support, L-shaped mounting frame, and base of the sediment treatment equipment in an embodiment of this application is shown.

[0036] Figure 4 A perspective view of the sediment treatment equipment deployment component and its positional relationship with the floating island in an embodiment of this application is shown.

[0037] Figure 5 A partial exploded view of the sediment treatment equipment dispensing component in an embodiment of this application is shown.

[0038] Figure 6 A perspective view of the dragging component of the sediment treatment equipment and its positional relationship with the floating island in an embodiment of this application is shown.

[0039] Figure 7 A perspective view of the bottom scraping component of the bottom sediment treatment equipment and its positional relationship with the floating island in an embodiment of this application is shown.

[0040] Figure 8 A perspective view of the driving unit of the sediment treatment equipment and its positional relationship with the floating island in an embodiment of this application is shown. Detailed Implementation

[0041] To make the objectives, technical solutions and advantages of this application clearer, the implementation methods of this application will be described in detail below. However, the embodiments described in this application are only some embodiments of this application, and not all embodiments.

[0042] Figure 1 The in-situ treatment method for river and lake organic sediment shown adopts, for example... Figures 2-8 The sediment treatment equipment shown includes a floating island 1, an engineered bacteria delivery unit, a bottom scraping assembly 4, and a drive unit.

[0043] The floating island 1 is made of polyester fiber. The floating island 1 has a main frame 11, and the main frame 11 has multiple planting troughs 12 arranged in multiple rows and columns. The planting troughs 12 are used to plant aquatic plants. Specifically, the aquatic plants can be one or more of the following: arrowhead, cattail, red lotus grass, canna, umbrella grass, yellow iris, etc. The bottom wall of the planting trough 12 has root holes that extend to the lower end of the floating island 1. The root holes are used for the roots of aquatic plants to pass through. The floating island 1 has four sloping openings 13 that extend to the bottom. The sloping openings 13 gradually extend outward from the top to the bottom of the floating island 1. The four junctions on the four sides of the floating island 1 have fixing parts 14 extending outward. The fixing parts 14 have fixing holes 15 that are opened vertically to pass through and fix the floating island 1 with ropes. Specifically, one end of the rope is connected to a weight that sinks to the bottom of the water. The weight can be a ship anchor. The four sides of the floating island 1 also have several hollow boxes 16 to improve the buoyancy of the floating island 1 and facilitate the installation of more components on the floating island 1.

[0044] The engineered bacteria delivery unit is partially located outside the floating island 1 and partially penetrates the floating island 1, including a delivery component 2 and a dragging component 3. The delivery component 2 is used to deliver EPSB engineered bacteria to a position near the bottom of the water body, including a Z-shaped support 21 located on one side of the floating island 1, and a Z-shaped elevator 22 located on the bottom horizontal edge of the Z-shaped support 21. In this embodiment, the Z-shaped elevator 22 is also partially located on the floating island 1. A discharge hopper 23 is located below the discharge port of the Z-shaped elevator 22, and an extension pipe is located at the lower end of the discharge hopper 23. The lower end of the extension pipe has multiple inclined pipes that are respectively inserted into the inclined opening 13. A rigid pipe 24 is provided at its lower end, and a telescopic flexible hose 25 is provided at its lower end. In this embodiment, the telescopic flexible hose 25 is a rubber telescopic flexible hose, which is not affected by shallow water pressure. A vertical rigid pipe 26 is provided at the lower end of the telescopic flexible hose 25. An L-shaped bracket 27 is assembled on the top horizontal side of the Z-shaped bracket 21. A slide rail 28 is provided at the upper end of the L-shaped bracket 27. The lower end of the slide rail 28 is located above the feed inlet of the Z-shaped elevator 22. Specifically, multiple first screw holes are opened on both sides of the top horizontal side of the Z-shaped bracket 21, and multiple second screw holes are opened on both sides of the horizontal side of the L-shaped bracket 27. Multiple connecting plates 29 are respectively assembled on both sides, that is, the inner side of the connecting plate 29 simultaneously fits the outer side of the Z-shaped bracket 21 and the L-shaped bracket 27. The connecting plate 29 has a pair of through holes that match the first screw hole and the second screw hole respectively. By inserting a screw through one through hole and the first screw hole in sequence, and then through one through hole and the second screw hole in sequence, the connecting plate 29 can be fixed. By assembling multiple connecting plates 29, the Z-shaped bracket 21 and the L-shaped bracket 27 can be stably connected. The dragging component 3 is used to change the placement point of the engineered bacteria and the axis of the extension tube by dragging the vertical rigid tube 26. The distance to the projection point at the bottom of the water body includes the first linear mechanism 31 vertically installed on the upper surface of the floating island 1. The upper end of its output shaft is provided with a U-shaped frame 32. The outer sides of the two long sides of the U-shaped frame 32 are respectively provided with a pair of vertical frames 33. The lower end of the vertical frame 33 is provided with a second linear mechanism 34. One end of its output shaft is provided with an L-shaped hanger 35. One end of the short side of the L-shaped hanger 35 is provided with a sleeve 36 fixedly sleeved on the outer periphery of the vertical rigid pipe 26. Specifically, the four second linear mechanisms 34 are arranged circumferentially around the axis of the extension pipe, and the output directions of the second linear mechanisms 34 are arranged in opposite directions.

[0045] The bottom scraping assembly 4 is located on one side of the floating island 1, including an L-shaped mounting bracket 41 located on one side of the floating island 1 and opposite to the Z-shaped bracket 21. The outer side of the vertical side of the L-shaped mounting bracket 41 is provided with a vertically arranged third linear mechanism 42, and the lower end of its output shaft is provided with an extension rod 43. The lower end of the extension rod 43 is provided with a scraper 44 for scraping up the bottom mud.

[0046] The drive unit is located on both sides of the floating island 1 and is used for the movement and rotation of the bottom sediment treatment equipment. It includes a pair of drive components 5. Each drive component 5 includes a base 51 located on one side of the floating island 1. Specifically, the two bases 51 are located on different sides of the floating island 1, along with the Z-shaped bracket 21 and the L-shaped mounting bracket 41. The upper end of the base 51 is provided with a rotary motor 52 with its output direction facing the outside of the floating island 1. One end of its output shaft is provided with a rotating part. Multiple paddles 53 are arranged in a circular array on the outer periphery of the rotating part. When the paddles 53 of the two drive components 5 rotate in the same direction, the floating island 1 moves forward. When the paddles 53 of the two drive components 5 rotate in opposite directions, the floating island 1 rotates.

[0047] In this embodiment, the first linear mechanism 31, the second linear mechanism 34, and the third linear mechanism 42 all adopt single-axis linear cylinders.

[0048] In this embodiment, there are eight hollow boxes 16. Two are provided on each of the four sides of the floating island 1. The bottom horizontal edge of the Z-shaped bracket 21 is located between the first and second hollow boxes 16. The horizontal edge of the L-shaped mounting bracket 41 is located between the third and fourth hollow boxes 16. Two bases 51 are located between the fifth and sixth hollow boxes 16, and between the seventh and eighth hollow boxes 16, respectively.

[0049] The in-situ treatment method for river and lake organic sediment using the above-mentioned sediment treatment equipment shall be implemented according to the following steps:

[0050] S100: Place the sediment treatment equipment with planted aquatic plants in the water. When treating the river sediment in situ, install the L-shaped bracket 27 on the upper end of the Z-shaped bracket 21.

[0051] S200: By dragging component 3, each vertical rigid tube 26 is lowered and each vertical rigid tube 26 is retracted inward to its limit position. The bottom end of the vertical rigid tube 26 is close to the bottom mud surface. Here, "close to" can mean a position 10cm to 30cm away from the bottom mud surface. Specifically, the U-shaped frame 32 is lowered by the first linear mechanism 31, so that the sleeve 36 is lowered and the vertical rigid tube 26 is lowered. The sleeve 36 is pulled by the second linear mechanism 34, so that the vertical rigid tube 26 is pulled towards the direction of the extension tube axis.

[0052] S300: The engineered bacteria are poured into the feed inlet of the Z-type elevator 22. Specifically, when treating organic bottom sediment in a river, the bottom sediment treatment equipment is moved to the bank by the drive unit, and personnel pour the engineered bacteria in through the slide 28. When treating organic bottom sediment in a lake, personnel are transported by boat to pour the engineered bacteria directly in. The engineered bacteria fall from the discharge outlet of the Z-type elevator 22 into the discharge hopper 23. The engineered bacteria are released from the vertical rigid pipe 26 through the extension pipe, the inclined rigid pipe 24, and the telescopic flexible pipe 25 in sequence. After accumulating in the extension pipe and the discharge hopper 23, the engineered bacteria can be pressed into the water under the action of gravity.

[0053] S400: During the release of engineered bacteria from the vertical rigid pipe 26, the bottom sediment treatment equipment is rotated 90° by the drive unit.

[0054] S500: Move each vertical rigid tube 26 outward a predetermined distance by dragging component 3. Specifically, pull the sleeve 36 by the second linear mechanism 34 to push the vertical rigid tube 26 away from the axis of the extension tube. Then repeat S400 until each vertical rigid tube 26 is stretched outward to its limit position.

[0055] S600: The bottom sediment treatment equipment is moved to the location in the water body where the organic bottom sediment has not been treated in situ through the drive unit, and then the steps S400~S500 are repeated to carry out the treatment. When all the engineered bacteria in the Z-type elevator 22 fall into the discharge hopper 23, the treatment is suspended and engineered bacteria are added to the feed inlet of the Z-type elevator 22.

[0056] S700: After completing the in-situ treatment of organic sediment, fix the floating island 1 in the water. Specifically, pass one end of the rope fixed to the bottom of the water through the fixing hole 15 and tie it tightly.

[0057] Specifically, before S400, the scraper 44 is first lowered by the third linear mechanism 42, and then the bottom mud treatment equipment is rotated at least one revolution by the drive unit, so that the surface bottom mud is scraped up and the deep bottom mud is exposed. More specifically, this process can be repeated multiple times, and the height of the scraper 44 is gradually reduced by the third linear mechanism 42.

[0058] The above are only some of the embodiments listed in this application and are not intended to limit this application.

Claims

1. A method for in-situ treatment of organic bottom sludge in rivers and lakes, characterized by, Sediment treatment equipment is used, which includes: Floating island (1), on which aquatic plants are planted; The engineered bacteria delivery unit is partially located outside the floating island (1) and partially inserted into the floating island (1), including a delivery component (2) and a dragging component (3); the delivery component (2) is used to deliver engineered bacteria, including a Z-shaped support (21) located on one side of the floating island (1), a Z-shaped elevator (22) is provided on the bottom horizontal side of the Z-shaped support (21), a discharge hopper (23) is provided below its discharge port, an extension pipe is provided at the lower end of the discharge hopper (23), a plurality of inclined hard pipes (24) are respectively inserted into the floating island (1) at the lower end of the extension pipe, a telescopic flexible hose (25) is provided at the lower end of the inclined hard pipe (24), and a vertical hard pipe (26) is provided at the lower end of the inclined hard pipe (24); the dragging component (3) is used to change the delivery point of engineered bacteria by dragging the vertical hard pipe (26); The drive unit is located on both sides of the floating island (1) and is used for moving and rotating the bottom sediment treatment equipment; The method includes the following steps: S100: Place the sediment treatment equipment with planted aquatic plants in the water; S200: Lower each vertical rigid tube (26) by dragging component (3) and retract each vertical rigid tube (26) inward to the limit position; S300: Pour engineered bacteria into the feed inlet of the Z-type elevator (22). The engineered bacteria fall into the discharge hopper (23) from the discharge outlet of the Z-type elevator (22). The engineered bacteria are released from the vertical rigid pipe (26) through the extension pipe, the inclined rigid pipe (24), and the telescopic flexible pipe (25). S400: During the release of engineered bacteria from the vertical rigid pipe (26), the bottom sediment treatment equipment is rotated 90° by the drive unit; S500: Move each vertical rigid tube (26) outward a predetermined distance by dragging component (3), and then repeat S400 until each vertical rigid tube (26) is stretched outward to its limit position; S600: Move the bottom sediment treatment equipment to the location in the water body where the organic bottom sediment has not been treated in situ through the drive unit, and then repeat steps S400~S500 to carry out the treatment. When all the engineered bacteria in the Z-type elevator (22) fall into the hopper (23), the treatment is suspended and engineered bacteria are added to the feed inlet of the Z-type elevator (22). S700: After completing the in-situ treatment of organic sediment, fix the floating island in the water (1).

2. The method for in-situ treatment of organic bottom mud of rivers and lakes according to claim 1, characterized in that, The bottom sediment treatment equipment also includes a bottom scraping assembly (4) located on one side of the floating island (1), including an L-shaped mounting frame (41) located on one side of the floating island (1). The outer side of the vertical side of the L-shaped mounting frame (41) is provided with a vertically arranged third linear mechanism (42), and the lower end of its output shaft is provided with an extension rod (43). The lower end of the extension rod (43) is provided with a scraper (44) for scraping up the bottom sediment. Before S400, the scraper (44) is first lowered by the third linear mechanism (42), and then the bottom sediment treatment equipment is rotated at least one revolution by the drive unit, so that the surface bottom sediment is scraped up.

3. The method for in-situ treatment of organic bottom mud of rivers and lakes according to claim 1, characterized in that, The top horizontal side of the Z-type bracket (21) is equipped with an L-type bracket (27), the upper end of the L-type bracket (27) is provided with a slide (28), and the lower end of the slide (28) is located above the feed inlet of the Z-type elevator (22); In S100, when the river is treated in situ with organic sediment, an L-shaped support (27) is installed on the upper end of the Z-shaped support (21). In S300; when treating organic sediment in situ in rivers, the sediment treatment equipment is first moved to the shore by the drive unit, and personnel pour in engineered bacteria through the slide (28). When treating organic sediment in situ in lakes, personnel take a boat to pour the engineered bacteria directly into the lake.

4. The method for in-situ treatment of organic bottom mud of rivers and lakes according to claim 1, characterized in that, The dragging component (3) includes a first linear mechanism (31) vertically mounted on the upper surface of the floating island (1), with a U-shaped frame (32) at the upper end of its output shaft, and two second linear mechanisms (34) at the lower ends of the two long sides of the U-shaped frame (32), with an L-shaped hanger (35) at one end of its output shaft, and a sleeve (36) fixedly fitted on the outer periphery of the vertical rigid tube (26) at one end of the short side of the L-shaped hanger (35). In S200, the U-shaped frame (32) is lowered by the first linear mechanism (31), causing the sleeve (36) to be lowered and the vertical rigid pipe (26) to be lowered. The sleeve (36) is pulled by the second linear mechanism (34), causing the vertical rigid pipe (26) to be pulled towards the axis of the extension pipe. In S500, the second linear mechanism (34) pulls the sleeve (36), which in turn drives the vertical rigid tube (26) to move away from the axis of the extension tube.

5. The method for in-situ treatment of organic bottom mud of rivers and lakes according to claim 1, characterized in that, The drive unit includes a pair of drive components (5). The drive components (5) include a base (51) located on one side of the floating island (1). The upper end of the base (51) is provided with a rotary motor (52) with the output direction facing the outside of the floating island (1). One end of its output shaft is provided with a rotating part. Multiple paddles (53) are arranged in a circular array on the outer periphery of the rotating part. When the paddles (53) of the two drive components (5) rotate in the same direction, the floating island (1) moves forward. When the paddles (53) of the two drive components (5) rotate in opposite directions, the floating island (1) rotates.

6. The in-situ treatment method for river and lake organic sediment according to claim 4, characterized in that, The outer sides of the two long sides of the U-shaped frame (32) are provided with a pair of vertical frames (33), and the second linear mechanism (34) is located at the lower end of the vertical frame (33).

7. The in-situ treatment method for river and lake organic sediment according to claim 1, characterized in that, The floating island (1) is provided with a main frame (11), and the main frame (11) is provided with multiple planting troughs (12) for planting aquatic plants. The bottom wall of the planting trough (12) is provided with root holes that penetrate to the bottom of the floating island (1) for the roots of aquatic plants to pass through. The floating island (1) is provided with four oblique openings (13) that penetrate to the bottom. The oblique rigid tube (24) is inserted through the oblique openings (13). The four junction edges of the four sides of the floating island (1) are respectively provided with fixing parts (14). The fixing parts (14) are provided with fixing holes (15) that penetrate from top to bottom for passing through ropes to fix the floating island (1). The four sides of the floating island (1) are also provided with several hollow boxes (16) to improve the buoyancy of the floating island (1). In S700, one end of the rope fixed to the bottom of the water is passed through the fixing hole (15) and tied tightly.

8. The method for treating in-situ organic bottom mud of rivers and lakes according to claim 1, characterized in that, The aquatic plants used include one or more of the following: Sagittaria sagittifolia, Typha orientalis, Nelumbo nucifera, Canna indica, Umbrella simonii, and Iris tectorum.

9. The method for in-situ treatment of organic bottom sediment in rivers and lakes according to claim 3, characterized in that, The top horizontal side of the Z-shaped bracket (21) is provided with multiple first screw holes, and the horizontal side of the L-shaped bracket (27) is provided with multiple second screw holes. Multiple connecting plates (29) are respectively mounted on the two sides of the Z-shaped bracket (21). The inner side of the connecting plate (29) is attached to the outer side of the L-shaped bracket (27). A pair of through holes matching the first screw holes and the second screw holes are respectively provided on the connecting plate (29).

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