Full-section algae removal ship for river channel

Abstract

The invention provides a river channel full-section algae removal ship. The river channel full-section algae removal ship comprises a ship body; the hollow front tail water tank is positioned at the head of the ship body; the two hollow side mud cabins are located on the two sides of the middle of the ship body and communicated with the front water cabin and the tail water cabin. The two side slope algae removal systems are located on the two sides of the front water tank and the tail water tank correspondingly and used for removing algae at the bottom of the river channel side slope; the two bottom algae removal systems are located on the two sides of the middle of the ship body respectively and used for removing algae at the bottom of the river channel. The device has the advantages that algae at the bottom of a river channel can be thoroughly removed, dead algae are not left, and the dead algae are prevented from releasing toxin to pollute a water body. And algae on the slope of the river slope can be removed, and algae at the bottom of the river can also be removed. The operation is simple and the algae removal efficiency is high.

Description

Technical Field

[0001] This application belongs to the field of river algae removal technology, specifically relating to a river full-section algae removal vessel. Background Technology

[0002] Riverbed sediment accumulates large amounts of undecomposed organic matter (such as dead aquatic organisms and deposited pollutants). Under anaerobic conditions (such as poor water flow), this releases nitrogen and phosphorus, becoming a "nutrient reservoir" for algae. When temperature and light are suitable, algae continue to grow in the river. Excessive algae growth leads to mass death, consuming large amounts of dissolved oxygen during decomposition, causing oxygen depletion and suffocation of fish, shrimp, and other aquatic animals, resulting in "dead water." The decomposition of dead algae releases harmful substances such as ammonia nitrogen and hydrogen sulfide, causing the water to turn black and smelly, affecting the surrounding environment and residents' lives. Some algae (such as cyanobacteria) secrete algal toxins (such as microcystins), which are hepatotoxic and neurotoxic; even low concentrations can pollute the water and threaten drinking water safety (if the river is a backup water source or is directly used by nearby residents). Therefore, regular algae removal is necessary for rivers.

[0003] Currently, methods for algae removal in rivers are mainly divided into several categories, including physical, chemical, biological, and ecological restoration. Each method has its applicable scenarios, but also has obvious drawbacks, as detailed below: I. Physical Methods Common methods include: Manual removal: Directly remove algae (such as blue-green algae blooms) from the water surface using tools.

[0004] Mechanical harvesting / algae suction: using specialized equipment (such as grass cutters and algae suction pumps) to collect algae.

[0005] Aeration and oxygenation: The dissolved oxygen content in the water is increased by using aeration devices to inhibit the growth of algae.

[0006] Shading method: Cover the water surface with shading materials (such as shade nets) to inhibit algal photosynthesis.

[0007] The drawbacks of physical methods include: Manual / mechanical removal is costly, can only remove surface algae in the short term, cannot cure the problem, and may release toxins after the algae die, polluting the water.

[0008] Aeration and oxygenation have limited effects on deep water bodies and consume a lot of energy, so they are only suitable for small waterways.

[0009] Shading can affect the photosynthesis of aquatic plants, disrupt the ecological balance of aquatic bodies, and easily lead to other ecological problems.

[0010] II. Chemical Methods Common methods include: Apply algaecides such as copper sulfate, sodium hypochlorite, and potassium persulfate to directly kill algae.

[0011] Add flocculants, such as polyaluminum chloride (PAC), to cause algae particles to coagulate and precipitate.

[0012] The drawbacks of chemical methods include: Algaecides may be toxic to non-target organisms such as fish and aquatic plants, damaging aquatic ecosystems.

[0013] Chemical residues may pollute water bodies, affect water quality safety, and even endanger human health through the food chain.

[0014] The decomposition of dead algae consumes a large amount of dissolved oxygen, leading to oxygen deficiency in the water, causing fish and shrimp to die and the water to become black and smelly.

[0015] Long-term use can easily lead to drug resistance in algae, requiring continuously increased dosages and creating a vicious cycle.

[0016] III. Biological Methods Common methods include: Release algae-eating organisms such as silver carp, bighead carp (filter-feeding fish), snails, and water fleas to control algae through biological predation.

[0017] Apply microbial agents, such as photosynthetic bacteria and Bacillus, to inhibit algae growth by competing for nutrients or secreting antibacterial substances.

[0018] The drawbacks of biological methods include: The amount of algae-eating organisms released is difficult to control precisely, and excessive release may lead to ecological imbalance (such as the overproduction of fish damaging aquatic plants).

[0019] Microbial preparations are greatly affected by environmental factors (such as temperature and pH), resulting in unstable effects and a long period of action.

[0020] It is only effective for mild algal blooms and has limited effect on severe algal blooms.

[0021] IV. Ecological Restoration Methods Common methods include: Constructing artificial wetlands: utilizing the synergistic effects of aquatic plants (such as reeds and calamus), microorganisms, and substrates to absorb nutrients such as nitrogen and phosphorus, and inhibit algae growth.

[0022] Planting submerged plants, such as Vallisneria natans and Hydrilla verticillata, can inhibit algae growth by competing for light and nutrients, while also improving water transparency.

[0023] Bottom sediment dredging: Remove nutrient-rich bottom sediment to reduce the "nutrient reservoir" for algae growth.

[0024] The drawbacks of ecological restoration methods include: Ecological restoration has a long cycle (usually requiring several months to several years), requires large upfront investments, and has poor emergency response to existing algal blooms.

[0025] Artificial wetlands and submerged plants are greatly affected by climate and water level changes, and are prone to withering in winter, requiring regular maintenance.

[0026] Dredging of bottom sediments may damage the benthic ecosystem, and the dredging process may cause pollutants in the sediments to be released back into the water.

[0027] Therefore, there is an urgent need for a method and device that can remove algae from the bottom of river channels without leaving any dead algae. Summary of the Invention

[0028] The purpose of this application is to overcome the shortcomings of existing technologies in removing algae from the entire cross-section of the riverbed.

[0029] To achieve the above objectives, this application proposes a full-section algae removal vessel for waterways, comprising: hull; A hollow fore and stern water tank is located at the bow of the hull. Two hollow side mud tanks are located on both sides of the middle of the hull and are connected to the fore and stern water tanks; Two slope algae removal systems, located on either side of the fore-tailwater tank, are used to remove algae from the bottom of the riverbank slopes; and Two bottom algae removal systems are located on either side of the middle of the hull and are used to remove algae from the bottom of the river.

[0030] As an improvement to the aforementioned algae removal vessel, the slope algae removal system includes: The first winch fixed at the bow; The first drill rod, with its tail end connected to the bow pin at the middle of the bow side, allows the first drill rod to rotate around the pin in a plane perpendicular to the longitudinal axis of the algae removal vessel, and its head end connected to the rope extending from the first winch; and The first algae removal trolley is connected to the head pin of the first drill rod; it is used to remove algae from the bottom of the river.

[0031] As an improvement to the aforementioned algae-removing vessel, the first algae-removing trolley includes: The vehicle body is closed on all sides and at the top, open at the bottom, and hollow inside, with an approximate rectangular structure. Four wheels are evenly distributed on both sides of the vehicle body; A high-pressure water pipe is fixed to the head inside the vehicle body, parallel to the width direction of the vehicle body; the high-pressure water pipe is connected to the high-pressure water pump on the algae removal vessel; Several high-pressure nozzles are connected to the high-pressure water pipe and face the rear of the vehicle body; A brush has a brush shaft and bristles that wrap around the brush shaft; the brush shaft is rotatably fixed in the middle of the vehicle body, parallel to the width direction of the vehicle body; A rotating shaft is rotatably fixed at the rear of the vehicle body, parallel to the width direction of the vehicle body; a motor capable of driving the rotating shaft to rotate is provided on one side of the rotating shaft. A spiral blade-shaped helical cutter is fixed on the rotating shaft; and The submersible pulverizing pump is fixed inside the vehicle body on one side, with its suction port located on the upper part of the rotating shaft and its outlet connected to the side mud chamber through a pipe.

[0032] As an improvement to the aforementioned algae-removing vessel, the bottom algae-removing system includes: The second winch is fixed in the middle of the hull; The second drill rod, with its tail end connected to a pin on the front side of the hull, allows the second drill rod to rotate about the pin in a vertical plane parallel to the longitudinal axis of the algae removal vessel, and its head end connected to a rope extending from the second winch; and The second algae removal trolley is connected to the head pin of the second rod; it is used to remove algae from the bottom of the river. The structure of the second algae removal vehicle is the same as that of the first algae removal vehicle.

[0033] As an improvement to the aforementioned algae-removing vessel, it also includes: A retractable and retractable maintenance plate is located on the side of the hull; when the maintenance plate is lowered, it can support the second chisel.

[0034] As an improvement to the aforementioned algae-removing vessel, it also includes: The hollow aft mud chamber is located at the stern of the hull and is connected to the side mud chamber.

[0035] As an improvement to the aforementioned algae removal vessel, the side mud tank has a filtration system for separating the algae-mud mixture into mud and water.

[0036] As an improvement to the aforementioned algae-removing vessel, it also includes: The sunken bridge and generator room are located in the middle of the hull; And the engine, located at the stern of the hull.

[0037] As an improvement to the aforementioned algae-removing vessel, it also includes: A suction port, connected to the side mud chamber, is used to extract mud from the side mud chamber; and The tailwater outlet is connected to the front tailwater tank and is used to extract water from the front tailwater tank.

[0038] Compared with existing technologies, the advantages of this application are: 1. It can thoroughly remove algae from the bottom of the river channel without leaving any dead algae, thus preventing dead algae from releasing toxins and polluting the water.

[0039] 2. It can remove algae from the slopes of riverbanks as well as from the bottom of river channels.

[0040] 3. Simple to operate and highly efficient at removing algae. Attached Figure Description

[0041] Figure 1 The image shown is a side view of the algae removal vessel. Figure 2 The image shown is a top view of the algae removal vessel. Figure 3 The image shown is a cross-sectional view of the algae removal vessel. Figure 4 The image shows a longitudinal section sectional view of the bow of the algae removal vessel, with the slope algae removal system in the retracted state (the drill rod in the image is not attached to the algae removal trolley). Figure 5 The image shows a longitudinal section sectional view of the bow of the algae removal vessel, and the working status of the algae removal system on one side slope (the algae removal trolley is not attached to the left-hand rod in the image). Figure 6 The diagram shown is of the structure of the algae removal cart. Figure 7 The diagram shown is a top view of the algae removal vehicle. Figure 8 The diagram shows the working operation of the algae removal system on the bottom of one side of the algae removal vessel; Figure 9 The image shown is a longitudinal section sectional view of the bridge section of the algae removal vessel. Figure 10 The diagram shows the algae removal system retracted on one side of the algae removal vessel. Detailed Implementation

[0042] The technical solution of this application will be described in detail below with reference to the accompanying drawings.

[0043] like Figure 1 , Figure 2 and Figure 3As shown, this application provides a full-section algae removal vessel for river channels, used to remove algae from the bottom and slopes of river channels. The bow of the vessel can be equipped with a hollow forward and stern water tank 6. A bridge 3 can be located aft of the forward and stern water tank 6. The bridge 3 can be a sunken design to reduce the height of the hull and facilitate the passage of the algae removal vessel under river bridges. Two hollow side mud tanks 7 can be located on both sides of the hull aft of the forward and stern water tank 6. A generator compartment 4 can be located aft of the side mud tanks 7 to power the algae removal equipment. A hollow aft mud tank 8 can be located aft of the generator compartment 4. One or more engines 5 can be installed at the stern. A slope algae removal system 1 can be installed on each side of the bow. A bottom algae removal system 7 can be installed on each side of the midsection of the hull.

[0044] The side mud chamber 7 may have a filter layer composed of materials such as wire mesh, fine sand, and activated carbon, which can filter out the water from the algae-mud mixture and discharge it into the front tailwater chamber 6 via a water pump, while the mud is stored in the side mud chamber 7. The filter layer can be replaced periodically. The side mud chamber 7 can be connected to the rear mud chamber 8, and when the side mud chamber 7 is full, the mud can be sucked into the rear mud chamber 8 for storage.

[0045] The side mud tank 7 may have a suction port 24, into which a pipe can be inserted to extract the mud from the side mud tank 7. The front tailwater tank 6 may have a tailwater outlet 25, into which a pipe can be inserted to extract the water from the front tailwater tank 6.

[0046] The algae removal vessel is designed to be 12m long, 3.4m wide, 0.8m draft, 1.7m high above the waterline, 10-15km / h fast in still water, weigh less than 17 tons, and have a maximum cleaning depth of about 8.5m.

[0047] For ease of description, the longitudinal axis of the algae removal vessel is referred to as the longitudinal axis in this application.

[0048] like Figure 4 and Figure 5 As shown, the slope algae removal system 1 may include a first winch 11 fixed to the bow of a boat, a first chisel 12, and a first algae removal trolley 13. The first chisel 12 is approximately 2 meters long. One end (the stern end) can be movably connected to the bow at the middle of the side of the bow, allowing the first chisel 12 to rotate around the connection point in a direction perpendicular to the longitudinal axis. The other end (the head end) can be connected to the rope extended from the first winch 11. When the first winch 11 retracts the rope, the head end of the first chisel 12 rises to an upright position. When the first winch 11 releases the rope, the head end of the first chisel 12 rotates downwards and can be submerged in the water. The head end of the first chisel 12 can also be connected to the first algae removal trolley 13 via a pin, ensuring that the first algae removal trolley 13 always maintains a downward-facing angle regardless of the angle at which the first chisel 12 rotates.

[0049] like Figure 6and Figure 7 As shown, the first algae-removing cart 13 can be an approximately rectangular parallelepiped structure, with its body closed on all sides and top, open at the bottom, and hollow inside. Each side can have two wheels. A high-pressure water pipe 19 can be installed at the head of the first algae-removing cart 13 along its width. Several high-pressure nozzles 14 can extend from the high-pressure water pipe 19 towards the tail of the first algae-removing cart 13. A high-pressure water pump can be installed on the algae-removing boat, and its outlet pipe can be connected to the high-pressure water pipe 19. A brush 15 can be installed on the bottom side of the middle section of the first algae-removing cart 13 along its width. The brush 15 has a brush shaft along its width, which can rotate, and the brush bristles wrap around the brush shaft. A rotating shaft 17 can be installed between the brush 15 and the stern along its width, and the rotating shaft 17 can have spiral blades 18. A motor can be installed on one side of the rotating shaft 17 to drive its rotation. A submersible pulverizing pump 16 can be installed on one side of the first algae-removing cart 13. The suction port of the submersible pulverizer pump 16 can be located on the upper part of the rotating shaft 17. The discharge port of the submersible pulverizer pump 16 can be connected to the side mud chamber 7 through a pipe. A camera can also be installed on the first algae removal trolley 13 to observe the growth of algae on the riverbed.

[0050] When the slope algae removal system 1 is in use, the first winch 11 releases the rope, and the head of the first drill rod 12 is submerged in the water until the bottom of the first algae removal trolley 13 contacts the riverbank slope. The algae removal boat moves along the river, controlling its speed relative to the ground at 4-5 km / h, moving the first algae removal trolley 13 along the slope. The high-pressure water pump on the algae removal boat pumps high-pressure water into the high-pressure water pipe 19, which is then sprayed onto the tail of the first algae removal trolley 13 through the high-pressure nozzle 14. The brush follows the first algae removal trolley 13 along the slope, brushing up the algae growing on the slope. The algae are then propelled towards the tail of the first algae removal trolley 13 by the high-pressure water, and the rotating shaft 17 rotates, driving the spiral blade 18 to rotate and cut the algae. The submersible pulverizing pump 16 sucks up the algae cut by the spiral blade 18 while simultaneously breaking it up to form an algae-sludge mixture, which is then pumped into the side mud chamber 7.

[0051] Early-stage filamentous algae (0-30cm in length) adhere to the slope. The brushes 15 and spiral cutters 18 of the first algae removal cart 13 effectively remove the filamentous algae and algae-mud mixture, causing the rhizoids of the filamentous algae to detach from the slope. Then, a high-pressure spray nozzle 14 is used for flushing. The removed filamentous algae and algae-mud mixture is cut and crushed by a submersible pulverizer pump 16, and transported to the side mud tank 7. After treatment by the algae-water separation device, the mud is stored in the side mud tank 7 or the rear mud tank 8, and the water is stored in the front tailwater tank 6. Once the mud tank or tailwater tank is full, the cart can return to its starting point for unloading. The first algae removal cart 13 uses a semi-enclosed space, minimizing disturbance to the water body during collection and reducing the diffusion of the algae-mud mixture and the suspension of particulate matter. The brushes 15 and spiral cutters 18 of the first algae removal cart 13 are in close contact with the collection surface, and the cart 13 has four wheels, preventing the spiral cutters 18 from directly contacting the lining plate and thus avoiding damage to the concrete lining plate of the channel. In addition, the submersible pulverizer pump 16 has a very strong suction capacity and good cutting performance, which can cut up the filamentous algae and discharge them, avoiding the risk of entanglement and blockage.

[0052] like Figure 8 , Figure 9 and Figure 10 As shown, the bottom algae removal system 7 may include a second winch 20, a second drill rod 21, and a second algae removal trolley 22. The tail end of the second drill rod 21 can be connected to a hull pin near the fore-end tank 6 on the side of the ship, allowing the second drill rod 21 to rotate around the pin in a vertical plane parallel to the longitudinal axis. The head end of the second drill rod 21 can be connected to a rope extending from the second winch 20. The head end of the second drill rod 21 can also be connected to a pin of the second algae removal trolley 22, ensuring that the bottom of the second algae removal trolley 22 always faces downwards, regardless of the angle of the second drill rod 21. The structure of the second algae removal trolley 22 can be the same as that of the first algae removal trolley 13.

[0053] The second rod 21 is 8m long and has an elevation angle of -6° to 70°. When rotated to -6°, the second algae removal trolley 22 can be disassembled. When rotated to 55°, the water depth cleaned is approximately 7.5m. When rotated to 70°, the water depth cleaned is approximately 8.5m.

[0054] When the bottom algae removal system 7 is in use, the second winch 20 releases a rope, and the head of the second drill rod 21 is submerged in the water until the bottom of the second algae removal trolley 22 contacts the riverbed. The algae removal vessel moves along the river, controlling its speed relative to the ground at 4-5 km / h, driving the second algae removal trolley 22 along the riverbed. The second algae removal trolley 22 brushes up, cuts, and crushes the algae from the riverbed into an algae-sludge mixture, which is then pumped into the side mud tank 7.

[0055] The algae removal vessel may also have a retractable maintenance plate 23 on its side. When the head of the second drill rod 21 is rotated upwards beyond the maintenance plate 23, the maintenance plate 23 is lowered so that the head of the second drill rod 21 is placed on the maintenance plate 23, which facilitates the disassembly and maintenance of the second algae removal trolley 22.

[0056] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application and are not intended to limit it. Although this application has been described in detail with reference to the embodiments, those skilled in the art should understand that modifications or equivalent substitutions to the technical solutions of this application do not depart from the spirit and scope of the technical solutions of this application, and should all be covered within the scope of the claims of this application.

Claims

1. A full-section algae removal vessel for river channels, characterized in that, include: hull; A hollow fore and stern water tank is located at the bow of the hull. Two hollow side mud tanks are located on both sides of the middle of the hull and are connected to the fore and stern water tanks; Two slope algae removal systems, located on either side of the fore-tailwater tank, are used to remove algae from the bottom of the riverbank slopes; and Two bottom algae removal systems are located on either side of the middle of the hull and are used to remove algae from the bottom of the river.

2. The river full-section algae removal vessel according to claim 1, characterized in that, The slope algae removal system includes: The first winch fixed at the bow; The first drill rod, with its tail end connected to the bow pin at the middle of the bow side, allows the first drill rod to rotate around the pin in a plane perpendicular to the longitudinal axis of the algae removal vessel, and its head end connected to the rope extending from the first winch; and The first algae removal trolley is connected to the head pin of the first drill rod; it is used to remove algae from the bottom of the river.

3. The river full-section algae removal vessel according to claim 2, characterized in that, The first algae removal vehicle includes: The vehicle body is closed on all sides and at the top, open at the bottom, and hollow inside, with an approximate rectangular structure. Four wheels are evenly distributed on both sides of the vehicle body; A high-pressure water pipe is fixed to the head inside the vehicle body, parallel to the width direction of the vehicle body; the high-pressure water pipe is connected to the high-pressure water pump on the algae removal vessel; Several high-pressure nozzles are connected to the high-pressure water pipe and face the rear of the vehicle body; A brush has a brush shaft and bristles that wrap around the brush shaft; the brush shaft is rotatably fixed in the middle of the vehicle body, parallel to the width direction of the vehicle body; A rotating shaft is rotatably fixed at the rear of the vehicle body, parallel to the width direction of the vehicle body; a motor capable of driving the rotating shaft to rotate is provided on one side of the rotating shaft. A spiral blade-shaped helical cutter is fixed on the rotating shaft; and The submersible pulverizing pump is fixed inside the vehicle body on one side, with its suction port located on the upper part of the rotating shaft and its outlet connected to the side mud chamber through a pipe.

4. The river full-section algae removal vessel according to claim 2 or 3, characterized in that, The bottom algae removal system includes: The second winch is fixed in the middle of the hull; The second drill rod, with its tail end connected to a pin on the front side of the hull, allows the second drill rod to rotate about the pin in a vertical plane parallel to the longitudinal axis of the algae removal vessel, and its head end connected to a rope extending from the second winch; and The second algae removal trolley is connected to the head pin of the second rod; it is used to remove algae from the bottom of the river. The structure of the second algae removal vehicle is the same as that of the first algae removal vehicle.

5. The river channel full-section algae removal vessel according to claim 1, characterized in that, Also includes: A retractable and retractable maintenance plate is located on the side of the hull; when the maintenance plate is lowered, it can support the second chisel.

6. The river full-section algae removal vessel according to claim 1, characterized in that, Also includes: The hollow aft mud chamber is located at the stern of the hull and is connected to the side mud chamber.

7. The river full-section algae removal vessel according to claim 1, characterized in that, The side mud chamber has a filtration system for separating the algae-mud mixture into mud and water.

8. The river full-section algae removal vessel according to claim 1, characterized in that, Also includes: The sunken bridge and generator room are located in the middle of the hull; And the engine, located at the stern of the hull.

9. The river full-section algae removal vessel according to claim 1, characterized in that, Also includes: The suction port is connected to the side mud chamber and is used to extract mud from the side mud chamber. and The tailwater outlet is connected to the front tailwater tank and is used to extract water from the front tailwater tank.

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