Method for purifying sea area based on wind energy driving and autonomous pollution searching and unmanned ship system

Abstract

The application discloses a kind of sea area purification method and unmanned ship system based on wind energy driving and autonomous pollution seeking, it is related to sea area purification technical field, including ship body platform and the integrated hybrid power module, autonomous cruise module, purification operation module and main controller in it.Mixed power module uses rigid wing sail to directly convert wind energy into propulsion power, and is provided with wind and light complementary power generation unit and auxiliary electric propeller.Autonomous cruise module senses pollution in real time through water quality sensor array and navigation unit, and main controller identifies pollution core area and generates tracking path accordingly.Purification operation module includes electrochemical flocculation, adsorption filtration and disinfection unit connected in sequence, wherein the alkaline water flow generated by electrochemical unit is used for synchronous regeneration of adsorption filter material.Main controller uniformly coordinates navigation and purification operation.The application realizes zero-carbon endurance and accurate tracking of pollution core area, significantly improves purification efficiency and long-term operation capability.

Description

Technical Field

[0001] This invention relates to the field of marine purification technology, specifically to a marine purification method and unmanned vessel system based on wind power-driven and autonomous pollution-finding. Background Technology

[0002] The rapid development of nearshore aquaculture, port shipping, and coastal tourism has led to frequent intermittent pollution of aquaculture areas, anchorages, bays, and other local sea areas with high concentrations of wastewater containing suspended solids, nutrients, oil, and pathogens, seriously threatening the marine ecological environment. To address this pollution problem, various treatment solutions have emerged in existing technologies. While fixed treatment facilities can achieve a certain degree of wastewater purification, they can only cover fixed areas and cannot adapt to dynamic and dispersed pollution sources. Furthermore, they suffer from high infrastructure investment costs and difficult maintenance. Motorized cleaning vessels are another commonly used solution; however, these vessels mostly rely on fuel or battery power, generally suffering from short range, high operating noise, and high carbon emissions. They also require manual on-site operation, resulting in low operational efficiency. In recent years, with the rise of unmanned surface vessel (USV) technology, USV equipment for surface cleaning has emerged. However, existing USVs primarily focus on collecting floating debris and lack the ability to deeply purify dissolved and microbial pollutants. Simultaneously, their energy supply methods are limited, and their operational reliability is insufficient in variable wind conditions at sea, making long-term continuous operation difficult. Furthermore, the functional modules of existing mobile purification equipment are relatively independent, failing to achieve deep coupling and coordinated control among energy supply, pollution detection, and purification treatment, resulting in limited overall operational efficiency. Therefore, there is an urgent need for a mobile marine purification system that can operate autonomously for extended periods, has zero carbon emissions, and can accurately track and deeply treat complex water pollutants. Summary of the Invention

[0003] To achieve long-term automatic monitoring, zero carbon emissions, and the ability to track and treat complex water pollutants, this invention proposes a wind-powered, autonomous pollution-finding unmanned surface vessel (USV) system for marine purification, comprising: The hull platform serves as the load-bearing foundation of the system; The hybrid power module, mounted on the hull platform, includes: a rigid wing sail for directly converting wind energy into ship propulsion power; a wind-solar hybrid power generation unit for converting and storing wind and solar energy into electrical energy; and an auxiliary electric propulsion unit connected to the wind-solar hybrid power generation unit. The autonomous cruise module includes an array of water quality sensors mounted on the hull, as well as a navigation and positioning unit; The purification module is located on the ship's platform and includes an electrochemical flocculation unit, an adsorption filtration unit, and a disinfection unit connected in sequence by pipelines. The electrochemical flocculation unit has a built-in sacrificial anode material and its outlet is connected to the adsorption filtration unit to deliver alkaline water rich in hydroxide ions to the adsorption filtration unit. The main controller is communicatively connected to the hybrid power module, the autonomous cruise module, and the purification operation module, and is configured as follows: Based on the detection data from the water quality sensor array, the core pollution areas in the water area are identified and tracked to generate a cruise path; During navigation, the angle of attack of the rigid wing sail is adjusted according to the real-time wind direction and speed, and the auxiliary electric propulsion is activated when the wind speed is lower than the preset threshold. Upon reaching the core pollution area, the purification module is activated, and the operating parameters of the electrochemical flocculation unit are adjusted based on real-time water quality data.

[0004] This invention achieves zero-carbon operation and precise tracking of core pollution areas through the synergy of wind power drive and autonomous pollution detection. Furthermore, it significantly improves purification efficiency and long-term operation capability by utilizing the coupled regeneration of electrochemical flocculation and adsorption units.

[0005] Furthermore, the electrochemical flocculation unit also includes a microbubble generator, which enhances the flocculation reaction and cleans the electrode surface by injecting microbubbles into the water within the unit.

[0006] Furthermore, the electrochemical flocculation unit is equipped with a baffled flow channel to extend the residence time of wastewater within the unit and increase the contact opportunities between wastewater and electrodes and microbubbles.

[0007] Furthermore, the sacrificial anode material is an aluminum-iron-titanium ternary composite electrode, wherein aluminum and iron serve as active flocculation electrodes, and titanium serves as an inert framework electrode.

[0008] Furthermore, the adsorption filtration unit is filled with composite adsorption filter media, and the water inlet of the unit is provided with a weak current electrode connected to the main controller; the weak current electrode is used to assist in the in-situ regeneration of the filter media under the action of the alkaline water flow.

[0009] Furthermore, the main controller is further configured to: based on real-time water quality data, switch the operating current of the electrochemical flocculation unit between multiple preset levels to perform step-by-step flocculation control that matches the pollution load.

[0010] Furthermore, the water quality sensor array includes a total phosphorus sensor and a turbidity sensor; the main controller selects and switches the operating current level of the electrochemical flocculation unit based on the real-time detected total phosphorus concentration and turbidity value, specifically as follows: When the turbidity value is lower than the first turbidity threshold and the total phosphorus concentration is lower than the first concentration threshold, it is determined to be a low pollution load, and the operating current is switched to the first current level. When the turbidity value is between the first turbidity threshold and the second turbidity threshold, or when the total phosphorus concentration is between the first concentration threshold and the second concentration threshold, it is determined to be a medium pollution load, and the operating current is switched to the second current level, which is higher than the first current level. When the turbidity value is higher than the second turbidity threshold or the total phosphorus concentration is higher than the second concentration threshold, it is determined to be a high pollution load, and the operating current is switched to the third current level, which is higher than the second current level.

[0011] Furthermore, the main controller is further configured to: construct a local pollution concentration field distribution map based on the detection data of the water quality sensor array, and use a gradient ascent algorithm to generate a cruise path moving towards the area with the highest pollutant concentration.

[0012] This invention also proposes a marine purification method based on wind power and autonomous pollution detection, comprising the following steps: S1: The autonomous cruise module scans the target water area and collects water quality and location data in real time. S2: The main controller analyzes and identifies the core pollution area based on the collected water quality and location data, generates and controls the ship platform to move to the core pollution area along the cruise path; S3: During the movement of the hull platform, the main controller adjusts the angle of attack of the rigid wing sail according to the real-time wind direction and speed, and selectively activates the auxiliary electric propulsion. S4: After reaching the core pollution area, the purification operation module is activated. The sewage flows through the electrochemical flocculation unit, adsorption filtration unit and disinfection unit in sequence for treatment. The alkaline water flow generated by the electrochemical flocculation unit simultaneously regenerates the adsorption filtration unit in situ. S5: When the water quality index in the core pollution area drops to the preset threshold, return to step S1 and continue the cruise scan; otherwise, continue to step S4.

[0013] Compared with the prior art, the present invention has at least the following beneficial effects: (1) The present invention proposes a marine purification method and unmanned vessel system based on wind power drive and autonomous pollution search. The system collects water data in real time through water quality sensor array and navigation and positioning unit. The main controller autonomously identifies and tracks the core pollution area based on the pollution concentration distribution and gradient ascent algorithm, realizing the upgrade of the operation mode from passive patrol to active pollution search, and improving the targeting and operation efficiency of pollution control. (2) Construct a tiered treatment process that integrates electrochemical flocculation, adsorption filtration and disinfection units. The electrochemical flocculation unit has a built-in sacrificial anode material that generates an alkaline water flow rich in hydroxide ions while removing pollutants. This water flow can simultaneously achieve in-situ regeneration of the adsorption filter material after entering the downstream adsorption filtration unit, thereby completing the self-cleaning of the unit during the purification process, extending the filter material replacement cycle and reducing the frequency of manual maintenance. (3) The main controller dynamically adjusts the working parameters of the electrochemical flocculation unit according to real-time water quality data, and adopts a stepped current control logic to match different pollution loads, so as to achieve on-demand energy supply and precise purification. Attached Figure Description

[0014] Figure 1 This is a modular schematic diagram of a wind-powered and autonomous pollution-finding unmanned surface vessel system for marine purification. Figure 2 This is a flowchart illustrating the steps of a marine purification method based on wind power and autonomous pollution detection. Detailed Implementation

[0015] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0016] This invention aims to provide a wind-powered, autonomous pollution-detection-based marine purification method and unmanned surface vessel system to address the aforementioned problems in existing technologies. This system integrates hybrid power technology, autonomous sensing technology, and modular purification technology to form a solution capable of long-term autonomous operation in target marine areas, accurately locating pollution, and implementing effective remediation.

[0017] To achieve this objective, the present invention provides a wind-powered, autonomous pollution-finding unmanned surface vessel (USV) system for marine purification, the core of which includes a hull platform serving as the supporting structure. On this hull platform, such as... Figure 1 As shown, it integrates a hybrid power module, an autonomous cruise module, a purification operation module, and a main controller. The main controller communicates with the aforementioned modules to achieve coordinated control of all parts of the system.

[0018] The hybrid power module includes a rigid wing sail with an optimized airfoil profile, such as using the NACA series airfoil, driven by a servo motor. This sail automatically adjusts its angle of attack based on real-time wind direction and speed, efficiently converting wind energy directly into the ship's primary propulsion for zero-carbon navigation. Simultaneously, the module incorporates a wind-solar hybrid power generation unit, typically consisting of a vertical-axis wind turbine and flexible solar thin-film panels, mounted on the top of the mast and laid flat on the deck surface, respectively. The electricity generated by these two components is processed by an energy management controller and stored in a connected lithium-ion battery. Furthermore, the hybrid power module includes an auxiliary electric propulsion unit connected to the lithium-ion battery, providing supplemental power to the ship in low wind speeds (e.g., below 1.5 m / s) or when precise maneuvering is required, ensuring the system's maneuverability and operational continuity in various sea conditions.

[0019] The core of the autonomous cruise module includes a water quality sensor array mounted on the hull, and a navigation and positioning unit (e.g., containing a GPS module and an inertial measurement unit, IMU) that provides precise position and attitude information. The configuration of the water quality sensor array is crucial; it typically includes various sensing elements, such as optical turbidity sensors, ultraviolet absorption sensors for detecting chemical oxygen demand (COD), ammonia nitrogen ion-selective electrodes, fluorescence sensors for detecting oil pollution, and chlorophyll a sensors, to perceive the water quality conditions of the target water area in real time and with multiple parameters. The navigation and positioning unit acquires the ship's precise coordinates, heading, and attitude data in real time. The main controller executes the core decision-making algorithm based on this perceived data. Specifically, the main controller constructs a pollution concentration field distribution map of the local sea area based on the detection data collected by the water quality sensor array at different locations, using interpolation or modeling methods. Based on this, a gradient ascent algorithm is used to plan an autonomous cruise path that guides the ship platform from its current position toward the area with the highest pollutant concentration (i.e., the core pollution area). This method enables unmanned vessels to actively track pollution rather than passively cruising along preset routes, significantly improving the targeting and efficiency of operations.

[0020] The purification module is located on the ship's platform and includes an electrochemical flocculation unit, an adsorption filtration unit, and a disinfection unit connected sequentially by pipelines. Wastewater first enters the system through an inlet located at the bow, which is typically equipped with a pretreatment screen to intercept large floating particles such as aquatic plants and plastic fragments, protecting the downstream working units. The pretreated water then flows into the electrochemical flocculation unit. This unit incorporates sacrificial anode material. Under energized conditions, the anode material dissolves and releases flocculating metal ions (such as aluminum and iron ions), while hydrogen microbubbles are generated at the cathode. By controlling the current intensity and flow channel structure, the wastewater is brought into full contact with the electrodes, resulting in flocculation, flotation, and electro-oxidation reactions, thereby removing suspended solids, some organic matter, and total phosphorus.

[0021] A preferred approach is to use an aluminum-iron-titanium ternary composite electrode as the sacrificial anode material in the electrochemical flocculation unit. In this electrode, aluminum and iron act as active flocculation electrodes, dissolving to generate aluminum and iron ions during electrolysis, which then hydrolyze to form aluminum hydroxide and iron hydroxide complexes with highly efficient flocculation properties. Titanium, as an inert framework electrode, primarily serves to conduct electricity and provide support, without participating in the electrolysis reaction. Through experimental optimization, when the mass ratio of aluminum, iron, and titanium is controlled at approximately 3:5:2, the electrode exhibits comprehensive performance, ensuring sufficient flocculation ion generation while utilizing the stability of the titanium framework to delay electrode passivation and extend its lifespan. This ratio was determined based on phase diagram analysis of the aluminum-iron-titanium ternary system. By calculating the phase equilibrium relationship of the system at different temperatures, the range of phase regions in which stable solid solutions or intermetallic compounds can form under normal-temperature seawater conditions was determined. Within this stable phase region, the electrochemical activity and structural stability of the electrode material achieve a relatively optimal balance, thus determining the aforementioned mass ratio range.

[0022] To further improve treatment efficiency, a microbubble generator can be added to the electrochemical flocculation unit. Powered by the system's lithium-ion battery, this generator produces microbubbles with a diameter of 5-50 micrometers. These microbubbles can adhere to the flocs, accelerating their upward movement and separation from the water. Furthermore, the rising of these microbubbles can scour the electrode surface, effectively reducing the deposition of suspended solids on the electrodes, thus delaying electrode passivation and maintaining stable treatment performance. In addition, the flow channels within the electrochemical flocculation unit can employ a baffle design. By setting guide plates to change the direction of water flow, the actual residence time of wastewater within the unit is extended, increasing the contact opportunities between wastewater and the electrodes and microbubbles, thereby enhancing the flocculation reaction effect.

[0023] Wastewater that has undergone primary electrochemical treatment, carrying flocculants and some dissolved pollutants, enters the secondary adsorption filtration unit. This adsorption filtration unit is filled with composite adsorption filter media, such as a mixed filter media composed of modified zeolite, activated carbon, and ion exchange resin, for the deep removal of pollutants such as ammonia nitrogen, residual phosphorus, and oil from the water.

[0024] A key design feature of this system is that during the electrochemical flocculation unit's electrolysis process, the cathode reaction generates hydroxide ions, slightly increasing the pH of the effluent and creating an alkaline water flow rich in hydroxide ions. This water flow is directly conveyed to the adsorption filtration unit. In this alkaline environment (e.g., pH 8.0-8.5), ammonium ions adsorbed on the modified zeolite and some polar organic matter adsorbed on the activated carbon undergo desorption, achieving in-situ regeneration of the adsorption filter media. To enhance this regeneration process, a weak electric electrode can be installed at the inlet of the adsorption filtration unit, connected to the main controller or energy management controller. Applying a weak electric field promotes ion migration and accelerates the desorption of pollutants from the filter media surface. The desorbed pollutants can then be re-adsorbed by metal hydroxide flocs from the first-stage unit carried in the water flow and enter the next stage unit for treatment. This design allows the regeneration process of the adsorption unit to be performed simultaneously with the purification operation, eliminating the need for downtime to replace or chemically clean the filter media, significantly extending the continuous service life of the filter media and reducing maintenance frequency and costs.

[0025] Finally, the water, after adsorption treatment, enters the three-stage ultraviolet disinfection unit. This unit is sealed with a low-pressure mercury lamp that emits ultraviolet light with a wavelength of 254 nanometers to kill residual pathogens such as E. coli and Salmonella in the water, ensuring that the treated effluent meets discharge or reuse standards. Thanks to the pretreatment in the first two stages, the turbidity and organic matter content of the water entering the disinfection unit are significantly reduced, thus ensuring good penetration and sterilization effect of the ultraviolet light.

[0026] The main controller, as the control core of the entire system, maintains communication connections with the hybrid power module, autonomous cruise module, and purification operation module. Its functional configuration covers a complete closed loop from perception and decision-making to execution. Specifically, the main controller is configured to perform the following operations: based on detection data from the water quality sensor array, identify and track the core pollution area in the waterway, generating an optimized cruise path; during navigation, adjust the angle of attack of the rigid sail via servo motors according to real-time wind direction and speed to achieve optimal wind-powered propulsion efficiency, and automatically activate the auxiliary electric propulsion unit when the detected wind speed is below a preset threshold (e.g., 1.5 m / s) to ensure the continuity and stability of navigation; after the vessel arrives at the core pollution area, activate the purification operation module, and adjust the operating parameters of the electrochemical flocculation unit based on at least real-time water quality data, for example, by adjusting the electrolysis current to change the flocculant production rate to adapt to different pollution loads.

[0027] As a preferred implementation, the main controller can achieve stepped flocculation control that matches the pollution load by switching the operating current of the electrochemical flocculation unit between multiple preset levels based on real-time water quality data. For example, when the water quality sensor array includes a total phosphorus sensor and a turbidity sensor, the main controller can automatically select and switch the operating current level based on the real-time detected total phosphorus concentration and turbidity value. A set of logic can be set: When the turbidity value is lower than the first turbidity threshold (e.g., 50 NTU) and the total phosphorus concentration is lower than the first concentration threshold (e.g., 0.5 mg / L), it is determined to be a low pollution load, and the operating current is switched to a lower first current level (e.g., 1-2 A). When the turbidity value is between the first turbidity threshold and the second turbidity threshold (e.g., 200 NTU), or the total phosphorus concentration is between the first concentration threshold and the second concentration threshold (e.g., 1 mg / L), it is determined to be a medium pollution load, and the operating current is switched to a higher second current level (e.g., 2-3 A). When the turbidity value is higher than the second turbidity threshold or the total phosphorus concentration is higher than the second concentration threshold, it is determined to be a high pollution load, and the operating current is switched to a higher third current level (such as 3-4A).

[0028] This dynamic control method enables the flocculant to be added as needed, avoiding excessive consumption of electrode materials under low pollution loads and ensuring sufficient processing capacity under high pollution loads, thereby achieving the goals of energy saving, consumption reduction, and extending electrode life.

[0029] This invention also provides a method for marine purification using the aforementioned unmanned surface vessel system, such as... Figure 2 As shown, the method includes the following steps: S1: The unmanned vessel system is activated in the target waters and cruises in a predetermined scanning pattern (such as a zigzag path) through the autonomous cruise module, collecting water quality data, location data and meteorological data in real time; S2: The shipboard main controller analyzes the collected data in real time. When it identifies that one or more water quality indicators exceed the preset background threshold, it determines that the area is polluted. Based on the location and concentration of these polluted points, it uses a gradient ascent algorithm to generate a cruise path pointing to the direction of the fastest increase in the pollution concentration gradient (i.e., the core pollution area). S3: As the hull platform moves along this path, the main controller dynamically adjusts the angle of attack of the rigid wing sail based on real-time wind direction and speed data to achieve wind-powered propulsion; at the same time, if the wind speed is lower than the preset threshold, the auxiliary electric propulsion unit is automatically activated to ensure that the hull can move stably and continuously toward the target area. S4: After the unmanned vessel arrives at the core pollution area, it automatically activates the purification module to treat the wastewater. The wastewater is pumped into the system and flows sequentially through the electrochemical flocculation unit, the adsorption filtration unit, and the disinfection unit. During this process, the main controller dynamically adjusts the operating current of the electrochemical flocculation unit based on real-time water quality data to match the real-time pollution load. Simultaneously, the alkaline water flow rich in hydroxide ions generated by the electrochemical flocculation unit is introduced into the adsorption filtration unit to synchronously regenerate the adsorption filter media in situ, restoring its adsorption capacity. S5: When the water quality indicators in the core pollution area drop to the preset compliance threshold after continuous treatment, the main controller determines that the purification task in the area is completed, the system stops the purification operation, and returns to the first step to continue to patrol and scan the target sea area to find and purify the next pollution area.

[0030] In summary, the present invention proposes a marine purification method and unmanned vessel system based on wind power and autonomous pollution detection. This method collects water data in real time through a water quality sensor array and a navigation and positioning unit. The main controller autonomously identifies and tracks the core pollution area based on the pollution concentration distribution and gradient ascent algorithm, thereby upgrading the operation mode from passive patrol to active pollution detection and improving the targeting and efficiency of pollution control.

[0031] By constructing a tiered treatment process that integrates electrochemical flocculation, adsorption filtration, and disinfection units, the electrochemical flocculation unit incorporates sacrificial anode material. While removing pollutants, it generates alkaline water rich in hydroxide ions. This water flows into the downstream adsorption filtration unit, simultaneously regenerating the filter media in situ. This self-cleaning process extends the filter media replacement cycle and reduces the frequency of manual maintenance. The main controller dynamically adjusts the operating parameters of the electrochemical flocculation unit based on real-time water quality data, employing a stepped current control logic to match different pollution loads, achieving on-demand power supply and precise purification.

[0032] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0033] Furthermore, in this invention, descriptions involving terms such as "first," "second," and "a" are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0034] In this invention, unless otherwise explicitly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0035] Furthermore, the technical solutions of the various embodiments of the present invention can be combined with each other, but only if they are feasible for those skilled in the art. If the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by the present invention.

Claims

1. A wind-powered, autonomous pollution-finding unmanned surface vessel (USV) system for marine purification, characterized in that: include: The hull platform serves as the load-bearing foundation of the system; The hybrid power module, mounted on the hull platform, includes: a rigid wing sail for directly converting wind energy into ship propulsion power; a wind-solar hybrid power generation unit for converting and storing wind and solar energy into electrical energy; and an auxiliary electric propulsion unit connected to the wind-solar hybrid power generation unit. The autonomous cruise module includes an array of water quality sensors mounted on the hull, as well as a navigation and positioning unit; The purification module is located on the ship's platform and includes an electrochemical flocculation unit, an adsorption filtration unit, and a disinfection unit connected in sequence by pipelines. The electrochemical flocculation unit has a built-in sacrificial anode material and its outlet is connected to the adsorption filtration unit to deliver alkaline water rich in hydroxide ions to the adsorption filtration unit. The main controller is communicatively connected to the hybrid power module, the autonomous cruise module, and the purification operation module, and is configured as follows: Based on the detection data from the water quality sensor array, the core pollution areas in the water area are identified and tracked to generate a cruise path; During navigation, the angle of attack of the rigid wing sail is adjusted according to the real-time wind direction and speed, and the auxiliary electric propulsion is activated when the wind speed is lower than the preset threshold. Upon reaching the core pollution area, the purification module is activated, and the operating parameters of the electrochemical flocculation unit are adjusted based on real-time water quality data.

2. The unmanned surface vessel system for marine purification based on wind power and autonomous pollution detection as described in claim 1, characterized in that, The electrochemical flocculation unit also includes a microbubble generator, which enhances the flocculation reaction and cleans the electrode surface by injecting microbubbles into the water within the unit.

3. The unmanned marine purification vessel system based on wind power and autonomous pollution detection as described in claim 2, characterized in that, The electrochemical flocculation unit is equipped with a baffled flow channel to extend the residence time of wastewater within the unit and increase the contact opportunities between wastewater and electrodes and microbubbles.

4. The unmanned surface vessel system for marine purification based on wind power and autonomous pollution detection as described in claim 1, characterized in that, The sacrificial anode material is an aluminum-iron-titanium ternary composite electrode, wherein aluminum and iron serve as active flocculation electrodes, and titanium serves as an inert framework electrode.

5. The unmanned surface vessel system for marine purification based on wind power and autonomous pollution detection as described in claim 1, characterized in that, The adsorption filtration unit is filled with composite adsorption filter media, and the water inlet of the unit is provided with a weak current electrode connected to the main controller; the weak current electrode is used to assist in the in-situ regeneration of the filter media under the action of the alkaline water flow.

6. The unmanned surface vessel system for marine purification based on wind power and autonomous pollution detection as described in claim 1, characterized in that, The main controller is further configured to: based on real-time water quality data, switch the operating current of the electrochemical flocculation unit between multiple preset levels to perform step-wise flocculation control that matches the pollution load.

7. The unmanned surface vessel system for marine purification based on wind power and autonomous pollution detection as described in claim 6, characterized in that, The water quality sensor array includes a total phosphorus sensor and a turbidity sensor; the main controller selects and switches the operating current level of the electrochemical flocculation unit based on the real-time detected total phosphorus concentration and turbidity value, specifically: When the turbidity value is lower than the first turbidity threshold and the total phosphorus concentration is lower than the first concentration threshold, it is determined to be a low pollution load, and the operating current is switched to the first current level. When the turbidity value is between the first turbidity threshold and the second turbidity threshold, or when the total phosphorus concentration is between the first concentration threshold and the second concentration threshold, it is determined to be a medium pollution load, and the operating current is switched to the second current level, which is higher than the first current level. When the turbidity value is higher than the second turbidity threshold or the total phosphorus concentration is higher than the second concentration threshold, it is determined to be a high pollution load, and the operating current is switched to the third current level, which is higher than the second current level.

8. The unmanned surface vessel system for marine purification based on wind power and autonomous pollution detection as described in claim 1, characterized in that, The main controller is further configured to: construct a local pollution concentration field distribution map based on the detection data of the water quality sensor array, and use a gradient ascent algorithm to generate a cruise path moving towards the area with the highest pollutant concentration.

9. A purification method using a wind-powered and autonomous pollution-finding unmanned surface vessel system for marine purification as described in any one of claims 1-8, characterized in that, Including the following steps: S1: The autonomous cruise module scans the target water area and collects water quality and location data in real time. S2: The main controller analyzes and identifies the core pollution area based on the collected water quality and location data, generates and controls the ship platform to move to the core pollution area along the cruise path; S3: During the movement of the hull platform, the main controller adjusts the angle of attack of the rigid wing sail according to the real-time wind direction and speed, and selectively activates the auxiliary electric propulsion. S4: After reaching the core pollution area, the purification operation module is activated. The sewage flows through the electrochemical flocculation unit, adsorption filtration unit and disinfection unit in sequence for treatment. The alkaline water flow generated by the electrochemical flocculation unit simultaneously regenerates the adsorption filtration unit in situ. S5: When the water quality index in the core pollution area drops to the preset threshold, return to step S1 and continue the cruise scan; otherwise, continue to step S4.

Images