A multi-channel cross-flow field separation water body algae bloom control device

Abstract

The application discloses a kind of multi-channel crossflow field separation water body algal bloom control device, including floating platform, and be set on the floating platform algal slurry circulation lifting mechanism and algal slurry collection processing mechanism;Algal slurry circulation lifting mechanism is by track assembly and multiple evenly spaced fixed settings on the track of track assembly lateral flow separator, track assembly is obliquely arranged on floating platform by support, lateral flow separator is by the shell cylinder and filter cartridge of inside and outside set, each lateral flow separator is located on the shell cylinder side wall of track assembly conveying direction side and is opened with door hole, control mechanism for controlling cover plate to open and close is provided on floating platform.The application is driven by track circulation lifting mechanism and is rotated by multiple lateral flow separators to automatically take water, filter drainage and algal slurry fixed-point discharge, water inlet does not need water pump pumping, and algal slurry is discharged by gravity, which can effectively reduce equipment energy consumption.

Description

Technical Field

[0001] This invention relates to the field of water eutrophication control technology, specifically to a water algal bloom control device with multi-channel crossflow field separation. Background Technology

[0002] Currently, the main physical methods for removing algal bloom cells directly from eutrophic water bodies include direct harvesting, vibration filtration, inclined screen filtration, rotary drum microfiltration, or magnetic capture. The amount of algae-rich water filtered per unit time depends on the area of ​​the filter screen. Since the filtration area is affected by the deck area of ​​the ship's platform, the single-unit filtration capacity of the above methods is small and the equipment processing energy consumption is high, which is far from meeting the needs of rapidly removing algal biomass during cyanobacterial blooms.

[0003] To address the low algae removal efficiency, existing technologies consider using larger filter screens or increasing the filtration flow rate. For example, the Chinese invention patent for gill filters (CN200910031268.0) employs a densely arranged inclined screen filtration method, increasing the filtration volume by increasing the filter screen area; however, this method requires a large footprint. Furthermore, physical algae filtration methods often suffer from frequent filter clogging, severely impacting filtration efficiency. To resolve this clogging issue, backwashing is frequently required, resulting in low purification efficiency for algae removal. Summary of the Invention

[0004] To address the aforementioned technical problems, this invention provides a multi-channel crossflow field separation device for controlling algal blooms in water bodies.

[0005] The technical solution of the present invention is: a water body algal bloom control device with multi-channel crossflow field separation, including a floating platform, and an algal slurry circulation and lifting mechanism and an algal slurry collection and treatment mechanism disposed on the floating platform; The algae slurry circulation and lifting mechanism consists of a track assembly and multiple transverse flow separators that are evenly spaced and fixed on the track of the track assembly. The track assembly is inclinedly mounted on the floating platform by a bracket, so that the track assembly has a low end for extending into the water and a high end for conveying and dumping algae slurry. The algae slurry collection and treatment mechanism is located below the high end of the track assembly and is used to receive the algae slurry dumped by the transverse flow separators. The transverse flow separator consists of an inner and outer shell and a filter cartridge. Each transverse flow separator has a door opening on the side wall of the shell on the side of the conveying direction of the track assembly. The door opening is equipped with a cover plate that can be controlled to open and close. There is a gap between the filter cartridge and the shell, and the liquid inlet of the filter cartridge is connected to the corresponding door opening. The filter cartridge has a rotating shaft arranged in the axial direction. A motor is fixed on the outer wall of one end of the shell, and the output end of the motor is fixedly connected to one end of the rotating shaft. Several centrifugal impellers are fixed on the rotating shaft. A water outlet is provided on the side wall of the shell away from the doorway. The floating platform is equipped with a control mechanism for opening and closing the cover plate.

[0006] Furthermore, the floating platform is a hull, and the hull has an opening through which the track assembly passes and extends below the water surface.

[0007] Note: The floating platform uses a self-propelled hull, allowing it to move freely on the water surface and continuously search for areas with high algae concentrations for efficient continuous filtration and removal of algae. To ensure the hull's balance, the track assembly is located in the middle of the hull, and openings are made in the hull to allow the lower end of the track assembly to extend below the water surface. It should be noted that this is not the only possible configuration.

[0008] Furthermore, the algae slurry collection and processing mechanism includes an algae slurry collection tank, a dehydration and drying mechanism, and a dried algae storage tank connected in sequence.

[0009] Note: The dehydration and drying mechanism uses commercially available dehydration and drying equipment. The algae slurry collection tank is located at the inlet of the dehydration and drying equipment, while the dried algae storage tank is located at the outlet of the dehydration and drying equipment. It should be noted that this is not the only possible setup; any equipment that meets the requirements for dehydrating and drying algae slurry is acceptable.

[0010] Furthermore, the filter cartridge includes a cylindrical cage-like frame coaxial with the shell and a filter screen fixedly attached to the cage-like frame, and the liquid inlet is opened on the side wall of the cage-like frame.

[0011] Note: The cage-like frame prevents the filter cartridge from collapsing and deforming under negative pressure, ensuring maximum filtration area and maintaining a cylindrical structure. It also allows for uniform distribution of the filter screen, avoiding local clogging or wrinkles and optimizing filtration efficiency.

[0012] Furthermore, a liquid-blocking plate is provided between the side wall of the cage-like skeleton and the doorway to connect the cage-like skeleton and the shell for sealing the gap.

[0013] Note: The baffle plate prevents algae slurry from entering the gap between the filter cartridge and the shell, thus affecting the filtration effect of the filter cartridge.

[0014] Furthermore, the shell is provided with an anti-clogging backwashing mechanism, which includes a pressure pump, a backwashing pipe, and a backwashing nozzle. The outlet of the pressure pump is connected to the backwashing nozzle through the backwashing pipe.

[0015] Explanation: By setting up an anti-clogging backwashing mechanism, the filter cartridges in the transverse flow separator can be backwashed, making it less prone to clogging. This allows for long-term continuous filtration and purification of algal bloom water. Furthermore, backwashing can be performed simultaneously during the filtration process, achieving online backwashing and effectively improving algae-water separation efficiency.

[0016] Furthermore, the pressure pump is fixed to the outer wall of the other end of the shell, and the pressure pump is a water pump or an air pump. Multiple backwash nozzles are provided and arranged in an array on the side wall of the shell, and the nozzles of the backwash nozzles face the outer wall of the filter cartridge.

[0017] Note: Water pumps are used for backwashing, which is simple and easy to operate, but consumes a lot of water and is more likely to damage the filter layer. Air pumps are used for backwashing, which saves water and energy and is more likely to protect the filter layer structure. Therefore, the appropriate method can be selected according to the actual use. At the same time, the backwash nozzles can be arranged in an array to improve the backwashing efficiency of the filter screen.

[0018] Furthermore, the shell is provided with an anti-clogging backwashing mechanism, which is a brush. One end of the brush is unidirectionally limited and hinged to the rim of the centrifugal impeller. When the centrifugal impeller rotates forward, the brush moves as a whole close to the rim of the centrifugal impeller. When the centrifugal impeller rotates in reverse, the brush with bristles extends outward due to centrifugal force and contacts and brushes the inner wall of the filter cartridge. The other end of the brush has bristles.

[0019] Explanation: By setting an anti-clogging backwashing mechanism, the filter cartridge in the transverse flow separator can be brushed. The equipment is simple and easy to operate by using brush cleaning. The working mode of the brush can be adjusted when the centrifugal impeller rotates forward and backward using the limit swing setting.

[0020] Furthermore, the cover plate is opened and closed via an electric telescopic mechanism, which is a commercially available electric push rod. The control mechanism includes a first position sensor and a second position sensor. The first position sensor is used to detect the shell emerging from the water surface and send a signal to the controller when the first position sensor detects it to control the cover of the corresponding shell to be in a closed state. The second position sensor is used to detect the shell that has reached directly above the algae collection and processing mechanism and send a signal to the controller when the second position sensor detects it to control the cover of the corresponding shell to be in an open state.

[0021] Explanation: By using a first position sensor and a second position sensor to control the opening and closing of the cover, the cover can be closed after the transverse flow separator emerges from the water surface, and opened when it moves above the algae slurry collection and treatment mechanism, thereby meeting the operational requirements of the present invention.

[0022] Furthermore, the cover plate is controlled to open and close via an airbag telescopic mechanism. The airbag telescopic mechanism is a commercially available airbag rod. The control mechanism includes a trigger frame mounted on a bracket and airbags located at both ends of the shell. The airbags and the airbag telescopic mechanism are connected via pipes. The trigger frame is provided with a trigger bar corresponding to the airbag, which is used to squeeze the airbag of the shell that emerges from the water surface to close the cover plate. The trigger bar is arranged parallel to the track of the track assembly, and the contact surface between the trigger bar and the airbag is provided with ball bearings.

[0023] Explanation: By using airbags and push plates to control the opening and closing of the cover, the cover can be closed after the transverse flow separator emerges from the water surface without the need for electronic control components, and opened when it moves above the algae slurry collection and treatment mechanism. This allows for low-power operation under extreme environmental conditions, and the pure mechanical structure has a lower failure rate, avoiding the possibility of failure when using electronic control components.

[0024] The beneficial effects of this invention are: (1) The present invention has multiple transverse flow separators with unique structure, and drives the circulating rotation through the tracked circulation lifting mechanism to automatically collect water, filter and drain water and discharge algae slurry at fixed points. Its structure is compact, and multiple transverse flow separators can be used simultaneously to filter and purify algae blooms in water within a limited space, realizing parallel operation of multiple channels in a single machine and continuously performing algae-water separation tasks, thereby improving the net working efficiency of a single machine; and the water inlet does not require a water pump to pump water, while the algae slurry is discharged by its own weight, which can effectively reduce the energy consumption of the equipment.

[0025] (2) The floating platform of the present invention can be a ship with its own power to move freely on the water surface and continuously search for areas with high algae concentration to efficiently filter and remove algae. The removed algae can be separated and dried by an algae slurry collection and treatment mechanism to ensure that a large amount of dried algae can be stored on the ship, so that the floating platform can work continuously for a long time without having to return and dump due to the excessive weight of the separated algae slurry.

[0026] (3) The present invention has an anti-clogging backwashing mechanism, which can backwash the filter cartridge in the transverse flow separator. It is not easy to clog and can continuously filter and purify algal bloom water for a long time. Backwashing can be carried out simultaneously during the filtration process, realizing online backwashing, which can effectively improve the algal water separation efficiency. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the water algal bloom control device according to Embodiment 1 of the present invention; Figure 2 yes Figure 1 Schematic diagram of a transverse flow separator (filter cartridge not shown); Figure 3 yes Figure 1 A schematic diagram showing the internal filter cartridge structure of a transverse flow separator. Figure 4 yes Figure 3 A isometric view of the transverse flow separator shown in the diagram (motor and pressure pump not shown); Figure 5 yes Figure 4 Left view of the transverse flow separator shown; Figure 6 yes Figure 4 A cross-sectional view of the transverse flow separator shown (centrifugal impeller not shown); Figure 7 This is a schematic diagram of the water algal bloom control device according to Embodiment 4 of the present invention; Among them, 1-floating platform, 2-tracked circulating lifting mechanism, 3-algae slurry collection and treatment mechanism, 4-lateral flow separator, 5-doorway, 6-cover plate, 7-filter cartridge, 8-motor, 9-shaft, 10-centrifugal impeller, 11-outlet, 12-pressure pump, 13-backwash pipe, 14-backwash nozzle, 15-first position sensor, 16-second position sensor, 18-airbag, 19-trigger bar. Detailed Implementation

[0028] The present invention will now be described in more detail with reference to specific embodiments, so as to better demonstrate the advantages of the present invention.

[0029] Example 1: As Figure 1-6 As shown, a multi-channel crossflow field separation water body algal bloom control device includes a floating platform 1, and an algal slurry circulation and lifting mechanism 2 and an algal slurry collection and treatment mechanism 3 installed on the floating platform 1; the algal slurry collection and treatment mechanism 3 includes an algal slurry collection tank, a dehydration and drying mechanism and a dry algal storage tank connected in sequence; it should be noted that the algal slurry collection tank of the algal slurry collection and treatment mechanism 3 should be located directly below the shell cylinder with the door opening 5 facing downward and the cover plate 6 just open. Generally speaking, the algal slurry can be discharged from the open door opening 5 relatively quickly. Therefore, even if the tracked circulation lifting mechanism 2 drives each crossflow separator 4 to move in the start state when the algal slurry is discharged, it can still ensure that the algal slurry collection tank can collect all the discharged algal slurry. The floating platform 1 is a hull, and the hull has an opening through which the track assembly passes and extends below the water surface. It is understood that, in order to facilitate automatic transfer, the hull is equipped with a power mechanism (motor). When the power mechanism is started, the hull can carry the remaining components of the entire transverse flow separation water body algae bloom control device to move on the water surface. In order to realize automatic cruising on the water surface, navigation mechanism and obstacle avoidance mechanism in conventional technology can also be set on the hull. The algae slurry circulation and lifting mechanism 2 consists of a track assembly and multiple transverse flow separators 4 that are evenly spaced and fixed on the track of the track assembly. The track assembly is inclinedly mounted on the floating platform 1 by a bracket, so that the track assembly has a low end for extending into the water and a high end for conveying and dumping algae slurry. The algae slurry collection and treatment mechanism 3 is located below the high end of the track assembly and is used to receive the algae slurry dumped by the transverse flow separators 4. The transverse flow separator 4 consists of an inner and outer shell and a filter cartridge 7. Each transverse flow separator 4 has a doorway 5 on the side wall of the shell on the side of the conveying direction of the track assembly. The doorway 5 is equipped with a cover plate 6 that can be controlled to open and close. There is a gap between the filter cartridge 7 and the shell, and the liquid inlet of the filter cartridge 7 is connected to the doorway 5. The filter cartridge 7 includes a cylindrical cage-like frame coaxial with the shell and a filter screen fixedly attached to the cage-like frame. It should be noted that the cage-like frame can be a hollow cage-like structure formed by interlocking rigid, corrosion-resistant metal or plastic rods. The filter screen is wrapped around the cage-like frame; the filter screen can be fixed to the cage-like frame and non-removable, or it can be removable and replaceable. The liquid inlet is located on the side wall of the cage-like frame, and a baffle plate is provided between the side wall of the cage-like frame and the opening 5 to connect the cage-like frame and the shell for gap sealing. The function of the baffle plate is to prevent algae-containing water entering through the doorway 5 from flowing into the gap between the filter cartridge 7 and the shell side wall and thus not being filtered by the filter cartridge. This ensures that all algae-containing water entering through the doorway 5 flows into the filter cartridge 7, and only the water filtered by the filter cartridge 7 enters the gap between the filter cartridge 7 and the shell side wall. The filter cartridge 9 is provided with a rotating shaft 9 along the axial direction. A motor 8 is fixed on the outer wall of one end of the shell, and the output end of the motor 8 is fixedly connected to one end of the rotating shaft 9. Several centrifugal impellers 10 are fixed on the rotating shaft 9. A water outlet 11 is provided on the side of the shell side wall away from the doorway 5. The floating platform 1 is equipped with a control mechanism for controlling the opening and closing of the cover plate 6. The cover plate 6 is controlled to open and close via an electric telescopic mechanism, which is a commercially available electric push rod. The control mechanism includes a first position sensor 15 and a second position sensor 16. It can be understood that the first position sensor 15 and the second position sensor 16 can be proximity sensors or contact sensors, and will be triggered only when the corresponding transverse flow separator 4 reaches the designated position. The first position sensor 15 is used to detect the shell emerging from the water surface and send a signal to the controller when the first position sensor 15 detects it to control the cover plate 6 of the corresponding shell to be in a closed state. The second position sensor 16 is used to detect the shell that reaches directly above the algae slurry collection and processing mechanism 3 and send a signal to the controller when the second position sensor 16 detects it to control the cover plate 6 of the corresponding shell to be in an open state.

[0030] It should be noted that this invention provides a multi-channel, transverse flow separation device for efficient removal of algae blooms on large water surfaces. A commercially available online algae concentration sampling and detection instrument can be mounted on a floating platform 1 to directly extract water samples from the location of the floating platform 1 for algae concentration analysis. Based on the algae concentration, the control mechanism automatically controls the rotation speed of the track wheels and motor of the tracked circulation lifting mechanism 2, and whether to activate the power mechanism (built into the floating platform 1 (hull)). This drives the floating platform 1 to move and locate the next area with excessive algae concentration for targeted algae filtration and removal. Through multiple transverse flow separators 4, the device achieves multi-channel, efficient filtration and removal of algae from the water within the effective space, saving installation space and improving algae removal and purification efficiency.

[0031] The cylindrical shell of the aforementioned transverse flow separator is made entirely of a waterproof material and is a closed cylinder at both ends. A doorway 5 communicating with the inside of the shell is opened along the axial direction on the cylindrical surface. A cover plate 6 that can be opened and closed is provided on the doorway 5. The cover plate 6 is opened or closed by an electric telescopic mechanism. The internal filter cartridge 7 and the external shell are generally coaxially arranged and fixedly connected.

[0032] The specific working process of the above-mentioned multi-channel transverse flow separation water body algae bloom control device is as follows: When the algae-containing water body fills the inner cavity of the transverse flow separator 4, when the corresponding transverse flow separator 4 just emerges from the water surface, the cover plate 6 is closed by the first position sensor 15 and the electric telescopic mechanism (or the cover plate 6 is set to be automatically triggered to close). Then, the motor 8 is triggered to run and drive the centrifugal impeller 10 to start. Under the action of centrifugal force, the algae water passes through the filter cylinder of the transverse flow separator, that is, the algae-free water continuously passes through the filter screen and flows into the outer cavity, and then is discharged through the outlet 11 at one end of the outer cavity. After the transverse flow algae water separation is completed, a high concentration of algae slurry is obtained. The motor 8 stops working. When the transverse flow separator 4 rotates with the conveyor belt to the door opening 5 facing down and aligned with the algae slurry collection and treatment mechanism, the cover plate 6 is opened by the second position sensor 16 and the electric telescopic mechanism. The algae slurry flows into the algae slurry collection tank below, and then undergoes the next dehydration and drying treatment through the dehydration and drying mechanism. Subsequently, the dried algae are collected by the dry algae storage tank.

[0033] Example 2: This example differs from Example 1 in that, as Figure 2 , 6 As shown, the shell is equipped with an anti-clogging backwashing mechanism, which includes a pressure pump 12, a backwashing pipe 13, and backwashing nozzles 14. The outlet of the pressure pump 12 is connected to the backwashing nozzles 14 through the backwashing pipe 13. The pressure pump 12 is fixed to the outer wall of the other end of the shell. The pressure pump 12 is a commercially available water pump or air pump. It should be noted that the pressure pump 12 compresses water or gas and sends it to each backwashing nozzle 14 through the backwashing pipe. The high-pressure water or gas sprayed can sweep the filter screen 7 from the outer wall of the filter cartridge, preventing algae from clogging the mesh of the filter screen 7. There are multiple backwashing nozzles 14, which are arranged in an array on the side wall of the shell. The nozzles of the backwashing nozzles 14 face the outer wall of the filter cartridge 7. It should be noted that the high-pressure water or gas sprayed by each backwashing nozzle is diffused, which can sweep and backwash a certain area of ​​the filter screen to prevent clogging.

[0034] The specific working process of the above-mentioned multi-channel transverse flow separation water body algal bloom control device is as follows: Based on the working process of Example 1, the anti-clogging backwashing mechanism can be activated at certain intervals to backwash the filter screen 7. The inlet of the pressurizing pump 12 of the anti-clogging reaction mechanism can be connected to the atmosphere to send out high-pressure air for backwashing, or it can be connected to the water body after the shell is submerged in the water body to pump high-pressure water to backwash the filter screen 7. In addition, if high-pressure water backwashing is performed above the water surface, a clean water storage tank can be fixedly connected to the outside of each transverse flow separator 4. The inlet of the pressurizing pump 12 is connected to the clean water storage tank through a pipe to provide backwash water source. The anti-clogging backwashing mechanism with a clean water storage tank is suitable for starting backwashing when the door opening 5 is facing down and aligned with the algal slurry collection tank. The algae backwashed off the filter screen 7 will be discharged into the algal slurry collection tank along with the algal slurry.

[0035] Example 3: This example differs from Example 1 in that the shell is provided with an anti-clogging backwashing mechanism, which is a brush. One end of the brush is unidirectionally limited and hinged to the rim of the centrifugal impeller 10. When the centrifugal impeller 10 rotates forward, the brush moves closer to the rim of the centrifugal impeller 10. When the centrifugal impeller 10 rotates in reverse, the brush with bristles extends outward due to centrifugal force and contacts and brushes the inner wall of the filter cartridge 7. The other end of the brush has bristles. It is understood that the brush that moves closer to the rim of the centrifugal impeller or extends outward due to the rotation of the centrifugal impeller is not difficult for those skilled in the art. There are many structures that can be implemented. For example, one way is to simply set an inclined groove on the edge of the centrifugal impeller for the brush to be inserted. This will not be elaborated here.

[0036] Example 4: This example differs from Example 1 in that the control mechanism is different. Specifically, as follows: Figure 7 As shown, the cover plate 6 is controlled to open and close via an airbag telescopic mechanism. The airbag telescopic mechanism is a commercially available airbag rod. The control mechanism includes a trigger frame mounted on a bracket and airbags 18 located at both ends of the shell. It can be understood that the airbags 18 are commercially available elastic airbags that automatically recover when not compressed. The airbags 18 are connected to the airbag telescopic mechanism via a pipe. The trigger frame is equipped with trigger bars 19 corresponding to the airbags 18, used to trigger the airbags 18 that emerge from the water surface. The trigger bar 19 is pressed to close the cover plate 6. The trigger bar 19 is arranged parallel to the track of the track assembly, and the contact surfaces of the trigger bar 19 and the airbag 18 are provided with ball bearings. To enable the airbag 18 to be equipped with ball bearings, a rigid plate can be provided at the contact surface between the airbag 18 and the trigger bar 19. The ball bearings are set on the rigid plate by contact and pressing with the trigger bar 19. It can be understood that the trigger bar 19 is a strip-shaped structure parallel to the track, and its length covers the movement range where the gate 5 of the transverse flow separator needs to be closed. Figure 7 ; The specific working process of the above-mentioned multi-channel transverse flow separation water algae bloom control device is as follows: The difference from the working process of Example 1 is that when the corresponding transverse flow separator 4 just emerges from the water surface, the airbag 18 contacts and squeezes the trigger strip 19, thereby closing the cover plate 6 under the action of the airbag telescopic mechanism. When the transverse flow separator 4 rotates with the track to the doorway 5 facing downward and aligned with the algae slurry collection and treatment mechanism, the airbag 18 of the transverse flow separator 4 moves to the area where the trigger strip 19 is not set, and the contact and squeezing between the airbag 18 and the trigger strip 19 is lost, thereby opening the cover plate 6 under the action of the airbag telescopic mechanism.

Claims

1. A multi-channel crossflow field separation device for controlling algal blooms in water bodies, characterized in that, It includes a floating platform (1), and an algae slurry circulation and lifting mechanism (2) and an algae slurry collection and processing mechanism (3) installed on the floating platform (1). The algae slurry circulation lifting mechanism (2) consists of a track assembly and multiple transverse flow separators (4) that are evenly spaced and fixed on the track of the track assembly. The track assembly is inclinedly mounted on the floating platform (1) by a bracket, so that the track assembly has a low end for extending into the water and a high end for conveying and dumping algae slurry. The algae slurry collection and treatment mechanism (3) is located below the high end of the track assembly and is used to receive the algae slurry dumped by the transverse flow separators (4). The transverse flow separator (4) consists of an inner and outer shell and a filter cartridge (7). Each transverse flow separator (4) has a door opening (5) on the side wall of the shell on the side of the conveying direction of the track assembly. The door opening (5) is provided with a cover plate (6) that can be controlled to open and close. There is a gap between the filter cartridge (7) and the shell, and the liquid inlet of the filter cartridge (7) is connected to the door opening (5). The filter cartridge (7) is provided with a rotating shaft (9) along the axial direction. A motor (8) is fixed on the outer wall of one end of the shell. The output end of the motor (8) is fixedly connected to one end of the rotating shaft (9). Several centrifugal impellers (10) are fixed on the rotating shaft (9). A water outlet (11) is provided on the side wall of the shell away from the doorway (5). The floating platform (1) is equipped with a control mechanism for controlling the opening and closing of the cover plate (6).

2. The water body algal bloom control device with multi-channel crossflow field separation according to claim 1, characterized in that, The floating platform (1) is a hull, and the hull has an opening through which the track assembly passes and extends below the water surface.

3. The water body algal bloom control device with multi-channel crossflow field separation according to claim 1, characterized in that, The algae slurry collection and processing mechanism (3) includes an algae slurry collection tank, a dehydration and drying mechanism and a dry algae storage tank connected in sequence.

4. The water body algal bloom control device with multi-channel crossflow field separation according to claim 1, characterized in that, The filter cartridge (7) includes a cylindrical cage-like frame that is coaxial with the shell and a filter screen fixedly attached to the cage-like frame, and the liquid inlet is opened on the side wall of the cage-like frame.

5. The water body algal bloom control device with multi-channel crossflow field separation according to claim 4, characterized in that, A liquid baffle is provided between the side wall of the cage-like skeleton and the doorway (5) for connecting the cage-like skeleton and the shell to seal the gap.

6. The water body algal bloom control device with multi-channel crossflow field separation according to claim 1, characterized in that, The shell is provided with an anti-clogging backwashing mechanism, which includes a pressure pump (12), a backwashing pipe (13), and a backwashing nozzle (14). The outlet of the pressure pump (12) is connected to the backwashing nozzle (14) through the backwashing pipe (13).

7. The water body algal bloom control device with multi-channel crossflow field separation according to claim 6, characterized in that, The pressure pump (12) is fixed on the outer wall of the other end of the shell. The pressure pump (12) is a water pump or an air pump. There are multiple backwash nozzles (14) and they are arranged in an array on the side wall of the shell. The nozzles of the backwash nozzles (14) face the outer wall of the filter cartridge (7).

8. The water body algal bloom control device with multi-channel crossflow field separation according to claim 1, characterized in that, The shell is provided with an anti-clogging backwashing mechanism, which is a brush. One end of the brush is unidirectionally limited and hinged to the rim of the centrifugal impeller (10), and the other end of the brush is provided with bristles.

9. The water body algal bloom control device with multi-channel crossflow field separation according to claim 1, characterized in that, The cover plate (6) is opened and closed by an electric telescopic mechanism. The floating platform (1) is provided with a control mechanism for controlling the opening and closing of the cover plate (6). The control mechanism includes a first position sensor (15) and a second position sensor (16). The first position sensor (15) is used to detect the shell emerging from the water surface and send a signal to the controller when the first position sensor (15) detects it to control the cover plate (6) of the corresponding shell to be in a closed state. The second position sensor (16) is used to detect the shell that reaches directly above the algae collection and processing mechanism (3) and send a signal to the controller when the second position sensor (16) detects it to control the cover plate (6) of the corresponding shell to be in an open state.

10. The water body algal bloom control device with multi-channel crossflow field separation according to claim 1, characterized in that, The cover plate (6) is controlled to open and close by being driven by an airbag telescopic mechanism. The floating platform (1) is provided with a control mechanism for controlling the opening and closing of the cover plate (6). The control mechanism includes a trigger frame mounted on a support and airbags (18) mounted at both ends of the shell. The airbags (18) are connected to the airbag telescopic mechanism through pipes. The trigger frame is provided with a trigger strip (19) corresponding to the airbag (18), which is used to squeeze the airbag (18) of the shell that emerges from the water surface by the trigger strip (19) to close the cover plate (6). The trigger strip (19) is arranged parallel to the track of the track assembly, and the contact surfaces of the trigger strip (19) and the airbag (18) are provided with ball bearings.

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