Multi-effect coupled algae-removal and fish-driving device and method driven by renewable electric energy

Abstract

This invention discloses a renewable energy-driven multi-effect coupled algae removal and fish repelling device and method. The device includes a shore-based unit, a multi-effect coupled algae removal and fish repelling device, and a control system. The shore-based unit includes a hoisting structure and a renewable power system. The method includes controlling the main drive device via a movement control module to move the multi-effect coupled algae removal and fish repelling device underwater; controlling the underwater monitoring device via an underwater monitoring control module to collect underwater image data to obtain fish / algae data from the underwater image data; controlling the electrode drive device via an electrode spacing control module to adjust the electrode spacing and adjusting the voltage output from the energy storage device according to the transformer; and releasing a pulsed electric field in the water via the first and second electrodes to generate various products with algae removal and fish repelling effects under multiple physicochemical effects. The algae removal and fish repelling device of this invention can remove harmful algae blooms while repelling fish in the water, preventing them from eating aquatic plants used for water body restoration or rare aquatic plants. The equipment is simple, easy to operate, and does not cause secondary pollution to the water body, overcoming the limitations of traditional algae removal and fish repelling technologies.

Description

Technical Field

[0001] This invention relates to the field of ecological restoration technology research, and in particular to a renewable energy-driven multi-effect coupled algae removal and fish repellent device and method. Background Technology

[0002] Current algae control methods are mainly divided into physical, chemical, or biological methods. However, their single effect is insufficient for efficient algae removal. Furthermore, the dominant plants used in aquatic ecosystem restoration are often susceptible to predation by large aquatic animals such as fish, which greatly complicates the restoration of aquatic ecosystems. Therefore, developing underwater methods that efficiently induce multiple physical and chemical effects to simultaneously control algae and repel fish has become an urgent priority. Summary of the Invention

[0003] This invention provides a renewable energy-driven, multi-effect coupled algae removal and fish repellent device and method to overcome the aforementioned technical problems.

[0004] To achieve the above objectives, the technical solution of the present invention is as follows:

[0005] A renewable energy-driven multi-effect coupled algae removal and fish repelling device includes a shore-based device connected to another shore-based device and a control system; and the shore-based device includes a hoisting structure for hoisting the multi-effect coupled algae removal and fish repelling device and a renewable power system for providing power to the multi-effect coupled algae removal and fish repelling device and the control system.

[0006] The multi-effect coupled algae removal and fish repelling device includes a curved cavity structure, a metal electrode assembly, and an underwater monitoring device. The curved cavity structure is a hollow cavity structure, with a pressure wave emission port at one end and a main body driving device installed at the other end.

[0007] The underwater monitoring device is located at one end of the curved cavity structure and is close to the pressure wave emission port. The underwater monitoring device is used to monitor and acquire image data of underwater fish and algae.

[0008] The metal electrode assembly is connected to the top of the curved cavity structure, and the metal electrode assembly includes a first electrode and a second electrode with adjustable spacing; the first electrode and the second electrode are connected to a renewable power system to release a pulsed electric field in the water through the first electrode and the second electrode, so as to generate a variety of products with algae removal and fish repellency effects under multiple physicochemical effects.

[0009] The products include strong light, strong oxidizing substances, pressure waves, and sound waves.

[0010] Furthermore, the inner wall of the hollow cavity structure is provided with a catalytic functional coating, which is used to obtain free radicals under strong photocatalysis to promote the generation of strong oxidizing substances;

[0011] The control system is used to drive the multi-effect coupled algae removal and fish repelling device to adjust its position in the water, and to obtain image data of the underwater fish and algae at the current position in real time during the adjustment process.

[0012] Furthermore, the renewable power system includes, in sequence, a photovoltaic module for converting solar energy into electrical energy, an energy storage device for storing the electrical energy converted by the photovoltaic module, and a spark gap switch for controlling the release of pulsed electric fields between the first electrode and the second electrode.

[0013] Furthermore, a transformer is provided between the energy storage device and the spark gap switch;

[0014] The transformer is used to adjust the voltage output from the energy storage device so that it can be transmitted to the first electrode and the second electrode through a spark gap switch.

[0015] Furthermore, it includes an electrode driving device for adjusting the electrode spacing;

[0016] The electrode driving device includes an air compressor and a compression cylinder;

[0017] The air compressor is used to connect to the compression cylinder via a pipeline;

[0018] The top of the hollow cavity structure is provided with a mounting hole structure;

[0019] The first electrode and the second electrode are respectively disposed at both ends of the insulating component;

[0020] The top of the insulating component is provided with an annular structure, and the top of the annular structure is fixed to the inner wall of the top of the curved cavity structure.

[0021] The compression cylinder is fixedly connected to the outer wall of the hollow cavity structure through the mounting hole structure, and the output end of the compression cylinder piston rod is connected to one end of the second electrode.

[0022] The other end of the second electrode passes through the annular structure and is movably connected to the annular structure;

[0023] The air compressor can drive the piston rod of the compression cylinder to move back and forth through the pipeline, thereby causing the second electrode to move relative to the annular structure.

[0024] Furthermore, it also includes one or more loudspeakers disposed on the outside of the curved cavity structure and connected to the inner wall of the curved cavity structure, and adjacent to the pressure wave emission port.

[0025] Furthermore, the electrode materials of the first electrode and the second electrode are made of corrosion-resistant metal materials;

[0026] The electrode spacing is 2–15 mm;

[0027] The electrode spacing is the distance between the top of the first electrode and the bottom of the second electrode.

[0028] The radius of curvature of the tip of the second electrode is 0.5 to 5 mm.

[0029] Furthermore, the curved cavity structure is specifically an elliptical hollow cavity structure.

[0030] Furthermore, the control system includes an underwater monitoring and control module, a motion control module, and an electrode spacing control module;

[0031] The movement control module is used to control the movement of the multi-effect coupled algae removal and fish repelling device driven by the main body drive device.

[0032] The underwater monitoring and control module is used to control the underwater monitoring device to collect and identify image data of underwater fish and algae during the movement of the multi-effect coupled algae removal and fish repelling device.

[0033] Furthermore, the control system also includes an electrode spacing control module;

[0034] The electrode spacing control module is used to adjust the electrode spacing by controlling the electrode drive device based on image data.

[0035] Furthermore, the material of the catalytic functional coating includes at least one of Ag-modified TiO, Ni-Cu-modified TiO, non-metal-modified TiO, non-metal-modified g-CN, Mo-Cu-modified g-CN, or Ni-Ag-modified g-CN.

[0036] A renewable energy-driven, multi-effect coupled algae removal and fish repellency method includes the following steps:

[0037] S1: The multi-effect coupled algae removal and fish repelling device moves underwater by controlling the main drive device through the mobile control module;

[0038] S2: Set a preset sampling period and control the underwater monitoring device through the underwater monitoring and control module. During the movement of the multi-effect coupled algae removal and fish repelling device, periodically collect underwater image data and obtain fish / algae data in the underwater image data based on image recognition technology.

[0039] The underwater monitoring device includes an underwater camera, an underwater light, and an underwater sonar device;

[0040] The fish / algae data shall include at least the number and location of the fish / algae;

[0041] S3: Based on fish / algae data, the electrode spacing is adjusted by controlling the electrode drive device through the electrode spacing control module, and the voltage output from the energy storage device is adjusted according to the transformer, so as to be transmitted to the first electrode and the second electrode through the spark gap switch.

[0042] S4: By releasing a pulsed electric field in the water through the first and second electrodes, a variety of products with algae removal and fish repellency effects are generated under multiple physicochemical effects.

[0043] The products include strong light, strong oxidizing substances, pressure waves, and sound waves.

[0044] The strong oxidizing substances include at least hydrogen peroxide, ozone, and reactive free radicals;

[0045] S5: Under strong photocatalysis, free radicals are obtained through a catalytic functional coating to promote the generation of strong oxidizing substances;

[0046] And it damages algal cells through oxidation by strong oxidizing substances;

[0047] The pressure wave is reflected and amplified by the inner wall of the curved cavity structure;

[0048] The generated sound waves are amplified through a loudspeaker;

[0049] The amplified sound waves, combined with the reflected and amplified pressure waves released through the pressure wave emission port and the resulting strong light, are used to drive the fish in a specific direction.

[0050] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0051] The algae removal and fish repelling device of the present invention can remove harmful algae blooms while repelling fish in the water, preventing them from eating aquatic plants used for water body restoration or rare aquatic plants; moreover, the device is simple, easy to operate, and does not cause secondary pollution to the water body, overcoming the limitations of traditional algae removal and fish repelling technologies, and efficiently achieving the purpose of algae removal and fish repelling, providing a new option for the field of water body restoration. Attached Figure Description

[0052] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0053] Figure 1 This is a flowchart of the renewable electric energy-driven multi-effect coupled algae removal and fish repellent method of the present invention;

[0054] Figure 2This is a schematic diagram of the renewable electric energy-driven multi-effect coupled algae removal and fish repelling device of the present invention;

[0055] Figure 3 This is a schematic diagram of the control system in this embodiment;

[0056] Figure 4 This is a schematic diagram of the electrode driving device for adjusting the electrode spacing in this embodiment.

[0057] In the diagram: 1. Shore-based device; 11. Lifting structure; 2. Renewable power system; 21. Photovoltaic module; 22. Energy storage device; 23. Spark gap switch; 24. Transformer; 3. Control system; 4. Multi-effect coupled algae removal and fish repelling device; 41. Curved cavity structure; 411. Pressure wave emission port; 412. Main body drive device; 413. Mounting hole structure; 42. Metal electrode assembly; 421. Electrode drive device; 4211. Air compressor; 4212. Compression cylinder; 422. Insulating component; 4221. Ring structure; 423. First electrode; 424. Second electrode; 43. Underwater monitoring device; 44. Loudspeaker. Detailed Implementation

[0058] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, 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, 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.

[0059] This embodiment provides a renewable energy-driven, multi-effect coupled algae removal and fish repellent device, such as... Figure 2 As shown, the device includes a multi-effect coupled algae removal and fish repelling device 4 connected to a shore-based device 1 and a control system 3; and the shore-based device 1 includes a hoisting structure 11 for hoisting the multi-effect coupled algae removal and fish repelling device 4 by means of ropes and a renewable power system 2 for providing power to the multi-effect coupled algae removal and fish repelling device 4 and the control system 3.

[0060] In a specific embodiment, the renewable power system 2 includes a photovoltaic module 21 for converting solar energy into electrical energy, an energy storage device 22 for storing the electrical energy converted by the photovoltaic module, and a spark gap switch 23 for controlling the release of pulsed electric fields by the first electrode 423 and the second electrode 424, which are connected in sequence; and the energy storage device 22 is specifically an energy storage capacitor with a size of 20 to 120 μF.

[0061] Furthermore, a transformer is provided between the energy storage device 22 and the spark gap switch 23;

[0062] The transformer is used to adjust the voltage output from the energy storage device 22 so that it can be transmitted to the first electrode 423 and the second electrode 424 through the spark gap switch 23. Preferably, the electrode materials of the first electrode 423 and the second electrode 424 are made of corrosion-resistant metal materials, such as tungsten copper alloy. The electrode spacing is 2 to 15 mm. The electrode spacing is the distance between the top end of the first electrode 423 and the bottom end of the second electrode 424. The radius of curvature of the electrode tip of the second electrode 424 is 0.5 to 5 mm.

[0063] The multi-effect coupled algae removal and fish repelling device 4 includes a curved cavity structure 41, a metal electrode assembly 42, and an underwater monitoring device 43. The curved cavity structure 41 is a hollow cavity structure. One end of the hollow cavity structure is provided with a pressure wave emission port 411, and the other end is equipped with a main body driving device 412.

[0064] The underwater monitoring device 43 is located at one end of the curved cavity structure 41 and is close to the pressure wave emission port 411. The underwater monitoring device 43 is used to monitor and acquire image data of underwater fish and algae.

[0065] The metal electrode assembly 42 is connected to the top of the curved cavity structure 41, and the metal electrode assembly 42 includes a first electrode 423 and a second electrode 424 with adjustable spacing; the first electrode 423 and the second electrode 424 are connected to the renewable power system 2 through wires to release a pulsed electric field in the water through the first electrode 423 and the second electrode 424 to generate a variety of products with algae removal and fish repellency effects under multiple physicochemical effects.

[0066] Furthermore, the products include strong light, strong oxidizing substances, pressure waves, and sound waves;

[0067] Furthermore, the inner wall of the hollow cavity structure is provided with a catalytic functional coating, which is used to obtain free radicals under strong photocatalysis to promote the generation of strong oxidizing substances;

[0068] In this embodiment, after the curved cavity structure 41 is filled with water, the spark gap switch 23 is turned on, and the voltage is adjusted to 10-30kV by the transformer, with a release cycle of 1-30s / time. The high-voltage impact current generates a liquid electro-hydraulic effect in the water. During this process, multiple physicochemical effects (pulsed electric field, strong light, strong oxidizing active substances, and pressure waves) are generated simultaneously. The inner wall of the water tank is coated with a catalytic functional coating, which promotes the excitation of more free radicals due to photocatalysis, thereby increasing the generation of strong oxidizing active substances, which oxidize and damage the algal cell structure, achieving efficient inactivation of algae. The pressure wave is enhanced by energy reflection from the inner wall of the curved cavity structure 41 and is emitted from the pressure wave emission port 411 towards the designated fish group. At the same time, the generated strong light overflows from the pressure wave emission port, which has a directional repelling effect on the fish group. In addition, sound waves are also generated during this process. The broadband sound waves are propagated by the loudspeaker, which can achieve a wide range of fish repelling.

[0069] The control system 3 is used to drive the multi-effect coupled algae removal and fish repelling device 4 to adjust its position in the water, and to obtain real-time image data of the underwater fish and algae at the current position during the adjustment process, such as... Figure 3 As shown, it includes an underwater monitoring and control module, a movement control module, and an electrode spacing control module;

[0070] The movement control module is used to control the main body drive device 412 to realize the movement of the multi-effect coupled algae removal and fish repelling device 4; the underwater monitoring control module is used to control the underwater monitoring device 43 to collect and identify image data of underwater fish and algae during the movement of the multi-effect coupled algae removal and fish repelling device 4; the electrode spacing control module is used to adjust the electrode spacing by controlling the electrode drive device 421 according to the image data.

[0071] In a specific embodiment, such as Figure 4 As shown, it includes an electrode drive device 421 for adjusting the electrode spacing, which includes an air compressor 4211 and a compression cylinder 4212.

[0072] Furthermore, the air compressor 4211 is installed on the shore and connected to the compression cylinder 4212 via a pipeline;

[0073] The top of the hollow cavity structure is provided with a mounting hole structure 413;

[0074] The first electrode 423 and the second electrode 424 are respectively disposed at both ends of the insulating member 422;

[0075] The top end of the insulating member 422 is provided with an annular structure 4221, and the top end of the annular structure 4221 is fixed to the inner wall of the top end of the curved cavity structure 41, and the inner diameter of the annular structure 4221 is the same as the diameter of the mounting hole structure 413.

[0076] The compression cylinder 4212 is fixedly connected to the outer wall of the hollow cavity structure through the mounting hole structure 413, and the output end of the piston rod of the compression cylinder 4212 is connected to one end of the second electrode 424.

[0077] The other end of the second electrode 424 passes through the annular structure 4221 and is movably connected to the annular structure 4221;

[0078] The air compressor 4211 can drive the piston rod of the compression cylinder 4212 to move back and forth through the pipeline, thereby driving the second electrode 424 to move relative to the annular structure 4221.

[0079] This embodiment sets and records the initial distance between the electrodes. The electrode spacing control module controls the air compressor 4211, which in turn drives the piston rod of the compression cylinder 4212 to reciprocate via gas from the air pipe. The piston rod's movement distance is then measured using existing equipment (e.g., by installing a displacement sensor on the compression cylinder 4212), thus adjusting the electrode spacing. The compression cylinder 4212 is made of an insulating material such as plastic.

[0080] In a specific embodiment, it also includes one or more loudspeakers 44 disposed on the outside of the curved cavity structure 41 and connected to the inner wall of the curved cavity structure 41, and disposed adjacent to the pressure wave emission port 411.

[0081] In a specific embodiment, the curved cavity structure 41 is specifically an elliptical hollow cavity structure.

[0082] In a specific embodiment, the material of the catalytic functional coating includes at least one of Ag-modified TiO2, Ni-Cu-modified TiO2, non-metal-modified TiO2, non-metal-modified g-C3N4, Mo-Cu-modified g-C3N4, or Ni-Ag-modified g-C3N4.

[0083] A renewable energy-driven, multi-effect coupled algae removal and fish repellency method, such as Figure 1 As shown, it includes the following steps:

[0084] S1: The multi-effect coupled algae removal and fish repelling device 4 moves underwater by controlling the main body drive device 412 through the mobile control module;

[0085] S2: Set a preset sampling period and control the underwater monitoring device 43 through the underwater monitoring and control module to periodically collect underwater image data during the movement of the multi-effect coupled algae removal and fish repelling device 4, and obtain fish / algae data in the underwater image data based on existing image recognition technology.

[0086] Furthermore, the underwater monitoring device 43 includes an underwater camera, an underwater light, and an underwater sonar device; the fish / algae data includes at least the type of fish / algae, the quantity of fish / algae, and their location;

[0087] To prevent the collected underwater image data from being unable to clearly and accurately identify fish / algae using image recognition technology, the process includes data processing of periodically collected underwater image data: First, a Gaussian filtering algorithm is used to initially process the underwater images, blurring high-frequency noise. Then, a guided filtering algorithm is used to further process low-frequency noise in the Gaussian-filtered underwater images. The results of the Gaussian and guided filtering are combined to form a bilateral filter, which is then used to process noise in the guided-filtered underwater images. The bilateral filtering results are then obtained and analyzed at the pixel level to determine if color deviation exists. If pixel-level analysis indicates color deviation, a white balance correction algorithm is used to dynamically adjust image parameters, generating white-balanced underwater image data. Finally, image recognition technology is used to identify the types of fish / algae in the underwater image data. The use of image recognition technology to identify the types of fish / algae in underwater image data is a well-known existing technique and will not be elaborated upon here.

[0088] The method for obtaining the number of fish / algae is as follows:

[0089] The underwater sonar equipment collects sonar images within a preset distance range below the water surface. The principle of sonar imaging is to use ultrasonic waves to emit signals, which are reflected back after encountering moving underwater objects. The underwater fish / algae are identified by calculating the time, direction, and strength of the signal response.

[0090] Preprocessed images of each sonar image are obtained through image preprocessing, including linear stretching, median filtering, and sharpening. The target fish regions to be segmented in the preprocessed images are extracted using edge detection technology. A binarization threshold for acoustic calibration of the target fish is set based on an image binarization segmentation threshold algorithm. The regions to be segmented are then binarized according to the binarization threshold, and the target fish are extracted from the binarized images. The number of fish / algae is obtained based on the number of target fish in each sonar image.

[0091] S3: Based on fish / algae data, the electrode spacing is adjusted by the electrode drive device 421 through the electrode spacing control module, and the voltage output from the energy storage device 22 is adjusted according to the transformer 24 so as to be transmitted to the first electrode 423 and the second electrode 424 through the spark gap switch 23.

[0092] Specifically, the corresponding fish / algae data is obtained according to the preset sampling period. That is, the electrode spacing and impact voltage that can achieve the removal effect are set according to the number of fish / algae, and then the electrode spacing sequence table and impact voltage sequence table corresponding to different numbers of fish / algae are obtained.

[0093] Furthermore, the electrode spacing sequence table and the impact voltage sequence table are descending lists of the distances between the first electrode 423 and the second electrode 424 corresponding to the generation of multiple physicochemical effects of different intensities, and the impact voltage sequence table of the corresponding descending list.

[0094] For example, when there are many fish, the electrode spacing can be reduced and the impulse voltage increased to generate stronger light, pressure waves, and sound waves, as well as more strong oxidizing substances to achieve the effect of repelling fish and removing algae. When there are few fish, the electrode spacing can be increased and the impulse voltage reduced to generate weaker light, pressure waves, and sound waves, as well as less strong oxidizing substances to achieve the effect of repelling fish and removing algae, which can effectively reduce energy consumption and energy utilization.

[0095] S4: A pulsed electric field is released in the water through the first electrode 423 and the second electrode 424 to produce a variety of products with algae removal and fish repellency effects under multiple physicochemical effects;

[0096] The products include strong light, strong oxidizing substances, pressure waves, and sound waves.

[0097] The strong oxidizing substances include at least hydrogen peroxide, ozone, and reactive free radicals;

[0098] S5: Under strong photocatalysis, free radicals are obtained through a catalytic functional coating to promote the generation of strong oxidizing substances;

[0099] And it damages algal cells through oxidation by strong oxidizing substances;

[0100] The pressure wave is reflected and amplified by the inner wall of the curved cavity structure 41;

[0101] The generated sound waves are amplified by speaker 44;

[0102] The amplified sound waves, along with the reflected and enhanced pressure waves released through the pressure wave emission port 411 and the generated strong light, are used to drive the fish in a specific direction.

[0103] This embodiment provides a device and method for algae removal and fish repellency driven by renewable electricity. The device overcomes the shortcomings of traditional algae removal technologies, such as long processing time, low efficiency, and secondary pollution. Its advantages include: firstly, the device utilizes solar power, making it energy-saving and environmentally friendly; secondly, the system has high processing efficiency, a high degree of automation, and is simple and easy to operate; thirdly, the device uses renewable electricity to induce multiple physicochemical effects underwater (pulsed electric field, strong light, highly oxidizing active substances, and pressure waves) to efficiently remove algae blooms while simultaneously repelling fish over a wide area to prevent them from consuming aquatic plants; fourthly, the device requires no chemical additives and does not cause secondary pollution to the water. Due to these advantages, the device can quickly and efficiently achieve the effects of algae removal and fish repellency.

[0104] The experimental results in this embodiment are as follows:

[0105] Example 1: Energy storage capacitor 20μF, electrode spacing 4mm, electrode tip curvature radius 5mm, applied peak voltage 14kV, release cycle 30s / cycle, catalytic functional coating using Ag-modified TiO2, algal solution concentration 1×10⁻⁶. 5 At a distance of 4m from the fish, the algae inactivation rate reached 80%, and the fish repulsion rate reached 60%.

[0106] Example 2: The energy storage capacitor is 40μF, the electrode spacing is 4mm, the radius of curvature of the electrode tip is 5mm, the applied peak voltage is 18kV, the release cycle is 20s / cycle, the catalytic functional coating is Ni-Cu modified TiO2, the concentration of algae to be treated is 1×105 cells / mL, the distance from the fish school is 4m, the inactivation rate of algae exceeds 80%, and the repulsion rate of fish school reaches 80%.

[0107] Example 3: Energy storage capacitor 60μF, electrode spacing 7mm, electrode tip curvature radius 3mm, applied peak voltage 22kV, release cycle 20s / cycle, catalytic functional coating using non-metallic modified TiO2, algal solution concentration 1×10⁻⁶. 5 At a concentration of 100 cells / mL, at a distance of 5m from the fish population, the algae inactivation rate reached 90%, and the fish repulsion rate reached 85%.

[0108] Example 4: Energy storage capacitor 80μF, electrode spacing 7mm, electrode tip curvature radius 3mm, applied peak voltage 24kV, release cycle 10s / cycle, catalytic functional coating using non-metallic modified g-C3N4, algal solution concentration 1×10⁻⁶. 5 At a concentration of 100 cells / mL, at a distance of 5m from the fish, the algae inactivation rate exceeds 95%, and the fish-repelling rate exceeds 90%.

[0109] Example 5: Energy storage capacitor 100μF, electrode spacing 10mm, electrode tip curvature radius 1mm, applied peak voltage 26kV, release cycle 5s / cycle, catalytic functional coating using Mo-Cu modified g-C3N4, algal solution concentration 1×10⁻⁶. 5 At a concentration of 100 cells / mL, at a distance of 8m from the fish, the algae inactivation rate exceeds 99%, and the fish-repelling rate reaches 95%.

[0110] Example 6: Energy storage capacitor 120μF, electrode spacing 15mm, electrode tip curvature radius 1mm, applied peak voltage 30kV, release cycle 1s / cycle, catalytic functional coating using Ni-Ag modified g-C3N4, algal solution concentration 1×10⁻⁶. 5 At a distance of 8m from the fish, the algae inactivation rate reached 100%, and the fish repulsion rate reached 100%.

[0111] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A multi-effect coupled algae removal and fish repelling device driven by renewable electric energy, characterized in that, It includes a shore-based device (1), a multi-effect coupled algae removal and fish repelling device (4) connected to the shore-based device (1), and a control system (3); and the shore-based device (1) includes a hoisting structure (11) for hoisting the multi-effect coupled algae removal and fish repelling device (4) and a renewable power system (2) for providing power to the multi-effect coupled algae removal and fish repelling device (4) and the control system (3). The multi-effect coupled algae removal and fish repelling device (4) includes a curved cavity structure (41), a metal electrode assembly (42), and an underwater monitoring device (43). The curved cavity structure (41) is a hollow cavity structure. One end of the hollow cavity structure is provided with a pressure wave emission port (411), and the other end is equipped with a main body driving device (412). The underwater monitoring device (43) is located at one end of the curved cavity structure (41) and is close to the pressure wave emission port (411). The underwater monitoring device (43) is used to monitor and acquire image data of underwater fish and algae. The metal electrode assembly (42) is connected to the top of the curved cavity structure (41), and the metal electrode assembly (42) includes a first electrode (423) and a second electrode (424) with adjustable spacing; the first electrode (423) and the second electrode (424) are connected to the renewable power system (2) for releasing a pulsed electric field in the water through the first electrode (423) and the second electrode (424) to generate a variety of products with algae removal and fish repellency effects under various physicochemical effects; The products include strong light, strong oxidizing substances, pressure waves, and sound waves. Furthermore, the inner wall of the hollow cavity structure is provided with a catalytic functional coating, which is used to obtain free radicals under strong photocatalysis to promote the generation of strong oxidizing substances; the material of the catalytic functional coating includes at least one of Ag-modified TiO2, Ni-Cu-modified TiO2, non-metal-modified TiO2, non-metal-modified g-C3N4, Mo-Cu-modified g-C3N4 or Ni-Ag-modified g-C3N4. The control system (3) is used to drive the multi-effect coupled algae removal and fish repelling device (4) to adjust its position in the water, and to obtain image data of the underwater fish and algae at the current position in real time during the adjustment process.

2. The renewable energy-driven multi-effect coupled algae removal and fish repelling device according to claim 1, characterized in that, The renewable power system (2) includes a photovoltaic module (21) for converting solar energy into electrical energy, an energy storage device (22) for storing the electrical energy converted by the photovoltaic module, and a spark gap switch (23) for controlling the release of pulse electric fields by the first electrode (423) and the second electrode (424) in sequence. Furthermore, a transformer (24) is provided between the energy storage device (22) and the spark gap switch (23); The transformer (24) is used to adjust the voltage output from the energy storage device (22) to be transmitted to the first electrode (423) and the second electrode (424) via the spark gap switch (23).

3. The renewable energy-driven multi-effect coupled algae removal and fish repelling device according to claim 2, characterized in that, Includes an electrode drive device (421) for adjusting the electrode spacing. The electrode driving device (421) includes an air compressor (4211) and a compression cylinder (4212). The air compressor (4211) is used to connect to the compression cylinder (4212) via a pipeline; The hollow cavity structure has a mounting hole structure (413) at its top end. The first electrode (423) and the second electrode (424) are respectively disposed at both ends of the insulating member (422); The top end of the insulating member (422) is provided with an annular structure (4221), and the top end of the annular structure (4221) is fixed to the inner wall of the top end of the curved cavity structure (41). The compression cylinder (4212) is fixedly connected to the outer wall of the hollow cavity structure through the mounting hole structure (413), and the output end of the piston rod of the compression cylinder (4212) is connected to one end of the second electrode (424); The other end of the second electrode (424) passes through the annular structure (4221) and is movably connected to the annular structure (4221); The air compressor (4211) can drive the piston rod of the compression cylinder (4212) to move back and forth through the pipeline, thereby driving the second electrode (424) to move relative to the annular structure (4221).

4. The renewable energy-driven multi-effect coupled algae removal and fish repelling device according to claim 3, characterized in that, It also includes one or more loudspeakers (44) disposed outside the curved cavity structure (41) and connected to the inner wall of the curved cavity structure (41), and adjacent to the pressure wave emission port (411).

5. The renewable energy-driven multi-effect coupled algae removal and fish repelling device according to claim 4, characterized in that, The electrode materials of the first electrode (423) and the second electrode (424) are made of corrosion-resistant metal materials; The electrode spacing is 2~15mm; And the electrode spacing is the distance between the top end of the first electrode (423) and the bottom end of the second electrode (424); The radius of curvature of the electrode tip of the second electrode (424) is 0.5~5mm.

6. The renewable energy-driven multi-effect coupled algae removal and fish repelling device according to claim 5, characterized in that, The curved cavity structure (41) is specifically an elliptical hollow cavity structure.

7. A renewable energy-driven multi-effect coupled algae removal and fish repelling device according to claim 6, characterized in that, The control system (3) includes an underwater monitoring and control module and a motion control module; as well as an electrode spacing control module; The movement control module is used to control the main body drive device (412) to drive the movement of the multi-effect coupled algae removal and fish repelling device (4); The underwater monitoring and control module is used to control the underwater monitoring device (43) to collect and identify image data of underwater fish and algae during the movement of the multi-effect coupled algae removal and fish repelling device (4).

8. The renewable energy-driven multi-effect coupled algae removal and fish repelling device according to claim 7, characterized in that, The control system (3) also includes an electrode spacing control module; The electrode spacing control module is used to adjust the electrode spacing by controlling the electrode drive device (421) according to the image data.

9. A renewable energy-driven multi-effect coupled algae removal and fish repelling method, based on the renewable energy-driven multi-effect coupled algae removal and fish repelling device of claim 8, characterized in that, Includes the following steps: S1: The multi-effect coupled algae removal and fish repelling device (4) moves underwater by controlling the main body drive device (412) through the mobile control module; S2: Set a preset sampling period and control the underwater monitoring device (43) through the underwater monitoring control module. During the movement of the multi-effect coupled algae removal and fish repelling device (4), the underwater image data is periodically collected, and the fish / algae data in the underwater image data is obtained based on image recognition technology. The underwater monitoring device (43) includes an underwater camera, an underwater lighting device, and an underwater sonar device; The fish / algae data shall include at least the number and location of the fish / algae; S3: Based on fish / algae data, the electrode drive device (421) is controlled by the electrode spacing control module to adjust the electrode spacing, and the voltage output from the energy storage device (22) is adjusted according to the transformer to be transmitted to the first electrode (423) and the second electrode (424) through the spark gap switch (23). S4: A pulsed electric field is released in the water through the first electrode (423) and the second electrode (424) to produce a variety of products with algae removal and fish repellency effects under various physicochemical effects; The products include strong light, strong oxidizing substances, pressure waves, and sound waves. The strong oxidizing substances include at least hydrogen peroxide, ozone, and reactive free radicals; S5: Under strong photocatalysis, free radicals are obtained through a catalytic functional coating to promote the generation of strong oxidizing substances; And it damages algal cells through oxidation by strong oxidizing substances; The pressure wave is reflected and amplified by the inner wall of the curved cavity structure (41); The generated sound waves are amplified by a loudspeaker (44); The amplified sound waves, along with the reflected and enhanced pressure waves and generated intense light released through the pressure wave emission port (411), are used to drive the fish in a specific direction.

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