An in-situ sediment collection device and method

Abstract

This invention discloses an in-situ sediment collection device, comprising a device body and a feeding assembly. A partition is installed within the device body, dividing its internal cavity into a filtration chamber and a storage chamber. The filtration chamber is located at the top of the storage chamber and is connected to its adjacent filtration chambers. When there are multiple filtration chambers, they are arranged vertically in sequence, with adjacent filtration chambers connected. The uppermost filtration chamber is an open cavity containing a filter element. The feeding assembly includes a feeding pipe, one end of which is connected to the riverbed sediment and the storage chamber. This invention also provides an in-situ sediment collection method. Using the aforementioned in-situ sediment collection device, the device is placed on the riverbed to achieve in-situ sediment collection, reducing disturbance to the water body during dredging operations, achieving rapid mud-water separation, thus ensuring water quality during and after dredging. Furthermore, the in-situ collection and storage of sediment reduces the difficulty of sediment treatment and minimizes environmental pollution.

Description

Technical Field

[0001] This invention relates to the technical field of dredging equipment and related supporting facilities for environmental engineering, and in particular to an in-situ sediment collection device and method. Background Technology

[0002] In existing technologies, the most commonly used river dredging technologies can be divided into three main categories: drainage dredging, underwater dredging, and environmental dredging. Drainage dredging is further divided into dry dredging and hydraulic flushing dredging; underwater dredging technologies are mainly divided into grab bucket dredging, submersible suction dredging, ordinary cutter suction dredging, bucket wheel dredging, chain bucket dredging, shovel bucket dredging, and robotic dredging; environmental dredging is mainly divided into environmental cutter head dredging, jet dredging, and in-situ environmental dredging.

[0003] It is universally acknowledged that bottom sediment has a significant impact on water quality, and dredging is undoubtedly an important means of water quality management. However, the starting point for environmentally friendly dredging work is to clearly understand how to ensure water quality during the dredging process, how to remove bottom sediment, and how to ensure water quality during the dredging process.

[0004] The most common method used in the market, the so-called "ecological dredging," is to use traditional suction dredging to bring the sediment ashore, dry it, and then dispose of it. The main problems with this approach are that the dredging time is long, the suction dredging mainly removes inorganic hard soil below the surface silt, the dredging project causes great disturbance to the water body, resulting in the release of surface silt into the water, the dredging unit has no responsibility to guarantee water quality, and it is difficult to select a site for disposal after the sediment is brought ashore (due to land scarcity and possible NIMBY effects, etc.). Moreover, the subsequent disposal of the sediment is also a big problem. The sediment is dredged and transported away by dredgers. Because the dredging technology removes the mud content, i.e. inorganic matter, from the sediment, it cannot be centrally incinerated and can only be dumped. This treatment method is energy-intensive and causes secondary pollution.

[0005] Therefore, how to solve the problem of the difficulty in treating bottom mud in existing dredging projects has become an urgent issue for those skilled in the art. Summary of the Invention

[0006] The purpose of this invention is to provide an in-situ sediment collection device and method to solve the problems existing in the prior art, realize in-situ sediment collection, reduce the construction difficulty of dredging projects, significantly reduce dredging costs, and solve environmental problems such as sludge transportation, landfilling or incineration.

[0007] To achieve the above objectives, the present invention provides the following solution: The present invention provides an in-situ sediment collection device, comprising:

[0008] The device body is a container with an open top. A partition is provided inside the device body to divide the inner cavity of the device body into a filter chamber and a storage chamber. The filter chamber is located on top of the storage chamber and is connected to the adjacent filter chamber. The number of filter chambers is at least one. When there are multiple filter chambers, the filter chambers are arranged sequentially in a vertical direction and adjacent filter chambers are connected. The uppermost filter chamber is an open mouth body and is equipped with a filter element.

[0009] The feeding assembly includes a feeding pipe, one end of which is connected to the riverbed sediment, and the other end of which is connected to the storage chamber.

[0010] Preferably, there are multiple filter chambers and multiple partitions. The upper partition has a gap with the first inner wall of the device body to form a communication channel, and the lower partition has a gap with the second inner wall of the device body to form a communication channel. The first inner wall and the second inner wall are located on opposite sides of the device body.

[0011] Preferably, the filter element includes a filter brush and a filter screen, wherein the filter brush is disposed near the side of the filter chamber that is connected to the adjacent filter chamber, and the filter screen is disposed away from the side of the filter chamber that is connected to the adjacent filter chamber.

[0012] The device body is connected to a steel wire rope, the filter brush is mounted on the steel wire rope, the filter screen is made of mesh material, and the mesh size of the filter screen is 50 to 100 mesh.

[0013] Preferably, the partition is arranged parallel to the bottom wall of the device body, and a baffle plate is also provided in the filter chamber. The baffle plate is arranged perpendicular to the partition plate and divides the filter chamber into multiple sub-cavities, with adjacent sub-cavities connected to each other.

[0014] Preferably, there are multiple water baffles, each with a notch forming a water passage. The notches of adjacent water baffles are staggered, and adjacent compartments are connected by the water passage. The notch is located at the top of the water baffle.

[0015] Preferably, the lowermost partition has a desludge slit, and when there are multiple filter chambers, adjacent filter chambers can be connected by the desludge slit; the storage chamber can be connected to the filter chamber by the desludge slit.

[0016] Preferably, the feeding assembly further includes a sludge guide pipe, which is connected to the storage chamber via the sludge guide pipe, and the sludge guide pipe is arranged parallel to the vertical direction.

[0017] Preferably, the feeding assembly further includes a diversion pipe, which is connected to the sludge guide pipe. The diversion pipe is arranged perpendicular to the sludge guide pipe, and there are multiple diversion pipes and sludge guide pipes.

[0018] Preferably, the device body includes a box and a supporting float tube. The box is a cuboid structure with an open top, and the supporting float tube is rectangular. The supporting float tube is connected to the top of the side wall of the box. The box and the partition are both made of knife-coated cloth.

[0019] The present invention also provides an in-situ sediment collection method. Using the above-mentioned in-situ sediment collection device, the in-situ sediment collection device is placed on the riverbed. The collected silt is introduced into the storage chamber through the feed pipe, so that the muddy water entering the storage chamber overflows into the upper filtration chamber. After sedimentation and filtration, the muddy water overflows from the device body after being filtered by the filter element. The sedimented sediment is left in the storage chamber, thus realizing the in-situ storage of sediment.

[0020] The present invention achieves the following technical effects compared with the prior art: The in-situ sediment collection device of the present invention includes a device body and a feeding assembly. A partition is provided in the device body to separate a filtration chamber and a storage chamber. The lifted sludge enters the storage chamber through the feeding pipe, the sediment remains in the storage chamber, and the mud slurry enters the filtration chamber upward. The filtered mud slurry is purified by the filtration element provided in the top filtration chamber and overflows from the device body. The settled sediment flows back into the storage chamber, thereby realizing the in-situ collection of sediment.

[0021] This invention also provides an in-situ sediment collection method. Utilizing the aforementioned in-situ sediment collection device, the device is placed on the riverbed to achieve in-situ sediment collection, reducing disturbance to the water body during dredging and achieving rapid mud-water separation. This ensures water quality during and after dredging. Furthermore, the in-situ collection and storage of sediment reduces the difficulty of sediment treatment, significantly lowers dredging costs, and solves environmental problems associated with sludge transportation, landfilling, or incineration, thus reducing environmental pollution. This invention enables rapid and independent isolation of existing pollution directly affecting the water body. The collected organic matter can be stably and safely stored and can also be provided to aquatic filter-feeding organisms for precise digestion and utilization at regular intervals and in quantitative quantities, serving as a storage reservoir for aquatic biodiversity management and achieving wastewater resource utilization. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the in-situ sediment collection device of the present invention;

[0024] Figure 2 This is a schematic diagram of the operation of the in-situ sediment collection device of the present invention.

[0025] Among them, 100 is an in-situ sediment collection device;

[0026] 1 is the main body of the device, 2 is the partition plate, 3 is the filter chamber, 4 is the storage chamber, 5 is the feed pipe, 6 is the connecting channel, 7 is the baffle plate, 8 is the water passage channel, 9 is the sludge removal slit, 10 is the sludge guide pipe, 11 is the diversion pipe, 12 is the box body, 13 is the supporting float pipe, 14 is the valve, 15 is the filter brush, 16 is the filter screen, and 17 is the wire rope. Detailed Implementation

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] The purpose of this invention is to provide an in-situ sediment collection device and method to solve the problems existing in the prior art, realize in-situ sediment collection, reduce the construction difficulty of dredging projects, significantly reduce dredging costs, and solve environmental problems such as sludge transportation, landfilling or incineration.

[0029] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0030] This invention provides an in-situ sediment collection device 100, comprising a device body 1 and a feeding assembly. The device body 1 is a container with an open top. A partition 2 is provided inside the device body 1 to divide the inner cavity of the device body 1 into a filter chamber 3 and a storage chamber 4. The filter chamber 3 is located at the top of the storage chamber 4 and is connected to its adjacent filter chamber 3. The number of filter chambers 3 is at least one. When there are multiple filter chambers 3, the filter chambers 3 are arranged sequentially in the vertical direction and adjacent filter chambers 3 are connected. The uppermost filter chamber 3 is an open mouth body and is provided with a filter element. The feeding assembly includes a feeding pipe 5, one end of which can be connected to the riverbed sediment, and the other end of which is connected to the storage chamber 4.

[0031] The in-situ sediment collection device 100 of the present invention has a partition 2 inside the device body 1, which separates a filtration chamber 3 and a storage chamber 4. The lifted sludge enters the storage chamber 4 through the feed pipe 5, where it remains. The muddy water flows upward into the filtration chamber 3, and the filtered muddy water overflows from the device body 1. The settled sediment flows back into the storage chamber 4, thus achieving in-situ sediment collection. This reduces the disturbance to the water body during dredging, ensuring water quality during and after dredging. Furthermore, the in-situ collection and storage of sediment reduces the difficulty of sediment treatment, minimizes environmental pollution, significantly lowers dredging costs, and solves environmental problems associated with transporting, landfilling, or incinerating sludge.

[0032] In this specific embodiment, there are two filter chambers 3 and two partitions 2. The upper partition 2 has a gap with the first inner wall of the device body 1, forming a connecting channel 6. Similarly, the lower partition 2 has a gap with the second inner wall of the device body 1, also forming a connecting channel 6. The first and second inner walls are located on opposite sides of the device body 1. That is, the connecting channel 6 between the lower filter chamber 3 and the storage chamber 4 is away from the connecting channel 6 between the lower and upper filter chambers 3. This allows the mud and water entering the filter chamber 3 from the storage chamber 4 to undergo sufficient filtration and sedimentation, improving the collection efficiency of the bottom sediment. In practical applications, the number of partitions 2 can be set according to actual needs, thereby adjusting the number of filter chambers 3 to improve the flexibility and adaptability of the device.

[0033] It should also be noted that the filter element includes a filter brush 15 and a filter screen 16. The filter brush 15 is located on the side of the filter chamber 3 that is connected to the adjacent filter chamber 3, and the filter screen 16 is located on the side of the filter chamber 3 that is not connected to the adjacent filter chamber 3. After the sedimented mud water reaches the top filter chamber 3, it is filtered by the filter brush 15 and the filter screen 16 and then overflows from the device body 1. The filter element further enhances the filtration effect of the filter chamber 3 on the mud water, ensuring the water quality during and after dredging.

[0034] In other embodiments of the present invention, the device body 1 is connected to a steel wire rope 17, and the filter brush 15 and filter screen 16 are mounted on the steel wire rope 17 for easy disassembly, maintenance, or replacement. The filter screen 16 is made of mesh material, and the mesh size of the filter screen 16 is 50 to 100 mesh. In practical applications, the mesh size of the filter screen 16 can be adjusted according to water quality and filtration requirements. In practical applications, the filter element is regularly flushed to ensure its filtration effect.

[0035] Specifically, the partition 2 is set parallel to the bottom wall of the device body 1, and a baffle 7 is also set in the filter chamber 3. The baffle 7 is set perpendicular to the partition 2 and divides the filter chamber 3 into multiple sub-chambers. Adjacent sub-chambers are connected. By dividing the filter chamber 3 into multiple sub-chambers using the baffle 7, the mud slurry water flows through each sub-chamber. The sub-chambers are arranged along the flow direction of the mud slurry water, which ensures the filtration and sedimentation effect of the filter chamber 3 and helps to improve the uniformity of mud slurry water sedimentation.

[0036] In other specific embodiments of the present invention, there are multiple baffles 7, each baffle 7 has a notch forming a water passage 8, the notches of adjacent baffles 7 are staggered, and adjacent chambers are connected by the water passage 8, so that the mud water flows in a serpentine manner in the filter chamber 3, extending the flow path of the mud water, so as to further ensure the filtration and sedimentation effect of the filter chamber 3.

[0037] It should be noted that the notch is located at the top of the baffle plate 7, which ensures the smooth flow of mud and water while preventing the sediment from settling.

[0038] To ensure that the sediment obtained from the sedimentation in the filter chamber 3 can be smoothly returned to the storage chamber 4, the partition plate 2 has a desliming slit 9. When multiple filter chambers 3 are set, adjacent filter chambers 3 can be connected by the desliming slit 9, and the storage chamber 4 can be connected to the filter chamber 3 by the desliming slit 9, forming a multi-layered structure with automatic desliming function. In addition, multiple desliming slits 9 can be set in the filter chamber 3, so that the desliming slit 9 corresponds one-to-one with the sub-cavities of the filter chamber 3 below, ensuring that the sediment can smoothly enter the storage chamber 4 for in-situ collection and storage.

[0039] More specifically, the feeding assembly also includes a sludge guide pipe 10. The feeding pipe 5 is connected to the storage chamber 4 via the sludge guide pipe 10. The sludge guide pipe 10 is arranged parallel to the vertical direction, and the sludge can be directly transported to the lowermost storage chamber 4 via the sludge guide pipe 10.

[0040] To improve feeding uniformity and feeding efficiency, the feeding assembly also includes a diversion pipe 11. The feeding pipe 5 is connected to the sludge guide pipe 10 via the diversion pipe 11. The diversion pipe 11 is set perpendicular to the sludge guide pipe 10. There are multiple diversion pipes 11 and sludge guide pipes 10. The sludge guide pipe 10 and the diversion pipe 11 work together to form a sludge conveying pipeline. The feeding pipe 5 first conveys the sludge to the horizontal conveying pipeline formed by the diversion pipe 11, and then uses the horizontal conveying pipeline to convey the sludge downward to the storage chamber 4 via the sludge guide pipe 10. In this specific embodiment, the diversion pipes 11 are arranged in a grid pattern.

[0041] It should also be noted that the device body 1 includes a box 12 and a supporting floating pipe 13. The box 12 is a cuboid structure with an open top, and the supporting floating pipe 13 is rectangular. The supporting floating pipe 13 is connected to the top of the side wall of the box 12. The box 12 and the partition 2 are both made of scraped cloth. The box 12 is a flexible structure. When the device body 1 is placed on the riverbed, the device body 1 can maintain its shape and float in the water using the supporting floating pipe 13. The device body 1 is made of flexible material. Due to gravity, the bottom mud on the bottom partition 2 can enlarge the desliming gap 9. After the bottom mud enters the storage chamber 4, the desliming gap 9 returns to its original shape, thus improving the reliability of the device while saving production costs. In addition, in practical applications, the supporting floating pipe 13 can be connected to the diversion pipe 11 to support the diversion pipe 11. To prevent silt in the diversion pipe 11 from entering the supporting floating pipe 13, a valve 14 is installed between the supporting floating pipe 13 and the diversion pipe 11.

[0042] Furthermore, the present invention also provides an in-situ sediment collection method. Using the aforementioned in-situ sediment collection device 100, the device is placed on the riverbed. The collected silt is lifted and introduced into the storage chamber 4 through the feed pipe 5. The muddy water entering the storage chamber 4 overflows into the upper filter chamber 3. After sedimentation and filtration, the muddy water is purified by the filter element and overflows from the device body 1. Once the sediment deposited in each layer of filter chamber 3 reaches a certain weight, it automatically slides down from the desludge slit 9 onto the next layer of partition 2, and so on, until the sediment finally slides down into the bottom storage chamber 4, achieving in-situ storage. After the sediment slides down, the desludge slit 9 automatically closes, preventing water from bypassing and thus failing to achieve the efficient interception and sedimentation effect of serpentine flow. The settled sediment remains in the storage chamber 4, achieving in-situ storage of the sediment, reducing the disturbance to the water body caused by dredging operations, achieving rapid mud-water separation, and ensuring water quality during and after dredging. It should be noted that after the sludge is lifted by the booster pump, it is transported to the storage chamber 4 through the feed pipe 5. In practical applications, the power of the sludge booster pump and the size of the tank 12 can be adjusted according to different requirements and standards, and the sedimentation time can be adjusted to achieve the corresponding purification standards.

[0043] like Figure 2As shown, taking a 100m long river channel as an example, the channel is 25m wide and 2m deep. Before dredging, the water volume of the river channel is 5000m³. 3 After in-situ sediment collection using the in-situ sediment collection device 100 of the present invention, the water volume of the tributary channel is 4994.4 m³. 3 This represents 99.89% of the original river channel, with a main channel water capacity of 6238.8 m³. 3 The sediment content is 99.82% of the original river channel. Therefore, it can be seen that the in-situ sediment collection device 100 of the present invention has little impact on river water management.

[0044] Specific examples have been used to illustrate the principles and implementation methods of this invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of this invention. Furthermore, those skilled in the art will recognize that, based on the ideas of this invention, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of this invention.

Claims

1. An in-situ sediment collection device, characterized in that, include: The device body is a container with an open top. A partition is provided inside the device body to divide the inner cavity of the device body into a filter chamber and a storage chamber. The filter chamber is located on top of the storage chamber and is connected to the adjacent filter chamber. The number of filter chambers is at least one. When there are multiple filter chambers, the filter chambers are arranged sequentially in a vertical direction and adjacent filter chambers are connected. The uppermost filter chamber is an open mouth body and is equipped with a filter element. The feeding assembly includes a feeding pipe, one end of which is connected to the riverbed sediment, and the other end of which is connected to the storage chamber.

2. The in-situ sediment collection device according to claim 1, characterized in that: The number of filter chambers is multiple, and the number of partitions is multiple. The upper partition has a gap with the first inner wall of the device body and forms a communication channel, and the lower partition has a gap with the second inner wall of the device body and forms a communication channel. The first inner wall and the second inner wall are located on opposite sides of the device body.

3. The in-situ sediment collection device according to claim 2, characterized in that: The filter element includes a filter brush and a filter screen. The filter brush is disposed near the side of the filter chamber that is connected to the adjacent filter chamber, and the filter screen is disposed away from the side of the filter chamber that is connected to the adjacent filter chamber. The device body is connected to a steel wire rope, the filter brush is mounted on the steel wire rope, the filter screen is made of mesh material, and the mesh size of the filter screen is 50 to 100 mesh.

4. The in-situ sediment collection device according to claim 1, characterized in that: The partition is arranged parallel to the bottom wall of the device body. A baffle plate is also provided in the filter chamber. The baffle plate is arranged perpendicular to the partition plate and divides the filter chamber into multiple sub-cavities. Adjacent sub-cavities are connected.

5. The in-situ sediment collection device according to claim 4, characterized in that: The number of water baffles is multiple, and each water baffle has a notch to form a water passage. The notches of adjacent water baffles are staggered, and adjacent compartments are connected by the water passage. The notch is located at the top of the water baffle.

6. The in-situ sediment collection device according to claim 1, characterized in that: The partition has a desludge removal slit, and when there are multiple filter chambers, adjacent filter chambers can be connected by the desludge removal slit; the storage chamber can be connected to the filter chamber by the desludge removal slit.

7. The in-situ sediment collection device according to claim 1, characterized in that: The feeding assembly also includes a sludge guide pipe, which is connected to the storage chamber. The sludge guide pipe is arranged parallel to the vertical direction.

8. The in-situ sediment collection device according to claim 7, characterized in that: The feeding assembly also includes a diversion pipe, which is connected to the sludge guide pipe. The diversion pipe is arranged perpendicular to the sludge guide pipe, and there are multiple diversion pipes and sludge guide pipes.

9. The in-situ sediment collection device according to any one of claims 1-8, characterized in that: The device body includes a box and a supporting floating tube. The box is a cuboid structure with an open top. The supporting floating tube is rectangular and connected to the top of the side wall of the box. The box and the partition are both made of knife-coated cloth.

10. A method for in-situ sediment collection, utilizing the in-situ sediment collection device according to any one of claims 1-9, characterized in that: The in-situ sediment collection device is placed on the riverbed. The collected silt is introduced into the storage chamber through the feed pipe, so that the muddy water entering the storage chamber overflows into the upper filtration chamber. After sedimentation and filtration, the muddy water overflows from the device body after being filtered by the filter element, and the sedimented sediment is left in the storage chamber, thus realizing the in-situ storage of sediment.

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