Water body oxygenation system based on natural wind power and design method

Abstract

The present application relates to the technical field of water oxygenation, in particular to a water oxygenation system based on natural wind force and a design method, the design method comprising setting up ventilation corridors on both banks of a river section, designing the height, width and length of the ventilation corridors based on environmental basic parameters, verifying and optimizing the design of the ventilation corridors; setting up wind force guiding devices in the ventilation corridors, designing the size of the inclined plates in the wind force guiding devices according to the width and length of the ventilation corridors; setting up a plurality of auxiliary ventilation devices evenly between the banks of the river section, determining the number of the auxiliary ventilation devices according to the length of the river section. The present application guides and accelerates the flow of natural wind to perform oxygenation by setting up ventilation corridors on both banks of the river, fully utilizes the natural wind force resources, greatly reduces the dependence on external energy, avoids the high energy consumption problem caused by traditional mechanical oxygenation and chemical oxygenation, eliminates the potential pollution of chemical agents to the environment, and ensures the sustainability of the environment and the stability of the ecological system.

Description

Technical Field

[0001] This invention relates to the field of water oxygenation technology, specifically to a water oxygenation system and design method based on natural wind power. Background Technology

[0002] Dissolved oxygen (DO) is one of the most important water quality indicators, playing a crucial role in the survival of aquatic organisms and the balance of ecosystems. Insufficient dissolved oxygen levels in water can lead to the suffocation and death of aquatic life, water quality deterioration, and even eutrophication and foul odor problems. Therefore, effectively improving dissolved oxygen levels in water bodies has always been an important issue in water environment management.

[0003] Currently, common water aeration technologies mainly include two categories: mechanical aeration and chemical aeration. Mechanical aeration is a method of increasing the oxygen content in water through physical means. Specifically, mechanical aeration technology mainly relies on equipment such as aerators, fountains, and blowers to introduce air into the water. These devices increase the contact area between the water and air by agitating the water, thereby promoting oxygen dissolution. For example, aerators can inject air into the water through pipes to form bubbles. As the bubbles rise, they make full contact with the water, increasing the oxygen dissolution efficiency. Fountains and blowers increase the contact between air and water by spraying water into the air and then letting it fall back into the water. However, although mechanical aeration methods are highly effective, they have problems such as high energy consumption, complex equipment maintenance, and noise pollution.

[0004] For example, Chinese invention patent CN109761365A discloses an energy-efficient and high-efficiency ecological floating island. This invention relates to an energy-efficient and high-efficiency ecological floating island. The floating island structure is made of stable plastic material, and the main frame is assembled for easy transportation. The aeration system is powered by solar energy, and the nighttime aeration operation of the aeration functional zone is controlled by light-sensing technology, which can increase dissolved oxygen in the water and reduce energy consumption. The aquatic plant area has an adsorption and enrichment effect. By coupling with biological filter technology, it can reduce short-circuiting of wastewater across the water body and increase the contact probability between the packing material and pollutants. This invention's energy-efficient and high-efficiency ecological floating island solves the problem of low dissolved oxygen in the water body due to the lack of photosynthesis and oxygen consumption by biological metabolism at night. However, the equipment is complex to maintain.

[0005] Chemical oxygenation is a method of increasing dissolved oxygen in water through chemical means. This technology primarily utilizes specific chemical agents, such as calcium peroxide and nitrates, which decompose in water to produce oxygen, thereby increasing the dissolved oxygen level. Chemical oxygenation methods are typically effective quickly, significantly increasing dissolved oxygen levels in a short period. However, long-term use of these agents can have side effects on water bodies and ecosystems, such as causing secondary pollution and altering the chemical properties of the water. Furthermore, the cost of these chemical agents is relatively high.

[0006] For example, Chinese invention patent CN103435111A discloses a calcium peroxide oxygenating agent granule containing 60%-77% by weight of a calcium peroxide mixture, 15%-25% bentonite, 5%-8% cross-linked polyvinyl chloride, 2%-5% dry starch, and 1-2% benzalkonium bromide; the calcium peroxide mixture contains calcium peroxide and calcium hydroxide, with the calcium peroxide content being 65%-75%. The calcium peroxide oxygenating agent granules disclosed in this invention can quickly sink to the bottom of the pool, rapidly disintegrate, form calcium peroxide suspension, and then gradually release oxygen, which is absorbed by the water. Although this manufacturing method has the advantages of simple process and low production cost, adding the agent to the water will cause secondary pollution to the water body.

[0007] In summary, existing river aeration technologies suffer from drawbacks such as high energy consumption, high cost, complex equipment maintenance, and environmental impact. Furthermore, both mechanical and chemical aeration are considered human interference, constituting deliberate disruption of the environment and conditions at national surface water assessment stations, potentially leading to substandard cross-sections. Therefore, there is an urgent need for an energy-efficient, environmentally friendly aeration technology. Summary of the Invention

[0008] To overcome the problems existing in the prior art, the present invention aims to provide a water oxygenation system and design method based on natural wind power. By setting up ventilation corridors on both sides of the river, the natural wind power resources are used to guide and accelerate the flow of wind, increase the air flow on the water surface, and thus improve the dissolved oxygen level in the water.

[0009] To achieve the above objectives, the present invention provides the following technical solution: a design method for a water oxygenation system based on natural wind power, comprising the following steps:

[0010] S1: Based on the oxygen-enriched ventilation corridor construction method, ventilation corridors are set up on both sides of the river section, including designing the height, width and length of the ventilation corridors based on basic environmental parameters, simulating and verifying and optimizing the ventilation corridor design;

[0011] S2: A wind guiding device is installed in the ventilation corridor. The wind guiding device includes several inclined plates, which are installed above the ventilation corridor. The size of the inclined plates is designed according to the width and length of the ventilation corridor.

[0012] S3: Several auxiliary ventilation devices are evenly spaced on both banks of the river section. The number and spacing of the auxiliary ventilation devices are determined according to the length of the river section.

[0013] The present invention is further configured such that, in step S1, the basic environmental parameters of the river section to be oxygenated are confirmed by field measurement method. The basic environmental parameters include the length of the river section, the width of the river section, the water flow velocity, the water depth, the water quality, and the height of the natural wind.

[0014] The invention is further configured such that the ventilation corridor includes a first wall and a second wall respectively built on both banks of the river section; the height of the ventilation corridor is set above the height of the natural wind, and the height of the ventilation corridor is adjusted according to the actual water depth, calculated by the following formula:

[0015] H c =k×h w

[0016] H′ c =H c +(k d ×d)

[0017] In the formula, H c h is the height of the ventilation corridor. w h is the height of the natural wind. w Depending on factors such as ground roughness, topography, and surrounding environment, k is an environmental coefficient, ranging from 1.5 to 3, H′ c For the adjusted height of the ventilation corridor, k d To adjust the coefficient, k d The range is 0.1-0.3, where d is the water depth;

[0018] The width of the ventilation corridor is designed based on the width of the river section and is calculated using the following formula:

[0019] W c =b×B r

[0020] In the formula, W c B is the distance between the first or second wall of the ventilation corridor and the riverbank. r denoted as , where is the width of the river section, and 'b' is the width coefficient, ranging from 0.05 to 0.15.

[0021] The length of the ventilation corridor is calculated using the following formula:

[0022] L c =l×L r

[0023] In the formula, L c L is the length of the ventilation corridor. r Let l be the length of the river segment, and l be the length coefficient, which ranges from 0.5 to 0.7.

[0024] The invention is further configured such that the ventilation corridor is made of weather-resistant and corrosion-resistant materials, and wind speed monitoring systems are respectively installed on the inner and outer sides of the ventilation corridor.

[0025] The present invention is further configured such that the method for constructing the oxygen-enriched ventilation corridor includes on-site measurement, wind-driven experimental method and simulation numerical method.

[0026] The invention is further configured to: measure actual parameters of the river and its surrounding environment, including water flow velocity, water depth, and water quality, based on field measurement methods; simulate the wind field around the ventilation corridor based on wind tunnel experiments to obtain wind speed and direction data inside and outside the ventilation corridor; and simulate and analyze the design parameters of the ventilation corridor, namely the height, width, and length of the ventilation corridor, through simulation numerical methods to predict the ventilation effect. If the ventilation effect is lower than the preset ventilation effect, the environmental coefficient, width coefficient, and length coefficient are modified to optimize the design scheme of the ventilation corridor.

[0027] The invention is further configured such that, in step S2, one end of the inclined plate is positioned above the ventilation corridor, and the other end extends inward into the ventilation corridor. The length of the inclined plate is equal to the distance from the ventilation corridor to the riverbank, and the spacing between the inclined plates is calculated based on the wind speed and the distance between the ventilation corridor and the riverbank.

[0028] D p =p×W c

[0029] In the formula, D p W is the width of the inclined plate. c ρ is the distance between the ventilation corridor and the riverbank, and p is the spacing coefficient of the inclined plates, which is taken as 0.4-0.6.

[0030] The invention is further configured such that the inclined plate is inclined along the wind direction in the ventilation corridor, with an inclination angle of 10 degrees to 30 degrees.

[0031] The inclined plate can be installed on the ventilation corridor through a fixed base. The inclined plate is hinged to the fixed base, which makes it convenient to adjust the tilt direction according to the wind direction and the tilt angle according to the wind speed.

[0032] The present invention is further configured such that, in step S3, the auxiliary ventilation device is a fan, and the fan is installed inside the ventilation corridor and evenly distributed on both banks of the river section at intervals of 50 meters.

[0033] A water oxygenation system based on natural wind power, comprising:

[0034] Ventilation corridors are set up on both banks of the river to guide natural airflow toward the water surface;

[0035] A wind-guiding device is installed inside the ventilation corridor to guide and accelerate the flow of natural wind.

[0036] Auxiliary ventilation devices are used to provide supplementary ventilation when the natural wind force is weak;

[0037] Wind speed monitoring system, used to measure wind speed in ventilation corridors;

[0038] The intelligent monitoring system is used to monitor the wind speed in the ventilation corridor and adjust the operation of the auxiliary ventilation device in real time.

[0039] The present invention is further configured such that the wind speed monitoring system is installed on the ventilation corridor, and the wind speed monitoring system and the auxiliary ventilation device are electrically connected to the intelligent monitoring system respectively.

[0040] In summary, the beneficial effects of the above-mentioned technical solution of the present invention are as follows:

[0041] 1. This invention innovatively utilizes natural wind resources by cleverly guiding and accelerating the flow of natural wind through ventilation corridors along both banks of a river to increase oxygen levels. This design enhances airflow over the water surface, thereby significantly improving the dissolved oxygen level in the water. This method fully utilizes natural resources, greatly reducing dependence on external energy sources and truly achieving the goals of energy conservation and environmental protection. Furthermore, this wind-based oxygenation technology avoids the high energy consumption problems associated with traditional mechanical and chemical oxygenation methods, while also eliminating the potential environmental pollution caused by chemical agents, ensuring environmental sustainability and ecosystem stability.

[0042] 2. By scientifically and rationally planning and laying out ventilation corridors, the wind flow path on both sides of the river can be optimized, maximizing the impact of natural wind on the water surface. Specifically, by setting up ventilation corridors of a certain height and width, and utilizing the terrain and wind direction, natural wind can be effectively guided to the river surface, increasing the contact time and area between the water and the air, thereby significantly improving oxygenation efficiency.

[0043] 3. Compared with traditional mechanical and chemical oxygenation methods, the method of this invention is structurally simpler, relying primarily on natural wind power to achieve the oxygenation effect. This simple yet efficient design significantly reduces the system's energy consumption and operating costs. Since it eliminates the need for complex mechanical equipment and chemical agents, the maintenance requirements are significantly reduced, thereby lowering the economic burden during long-term use. Specifically, the installation and maintenance of the ventilation ducts and natural wind guidance devices are very simple, requiring no frequent professional maintenance, greatly reducing labor and material costs.

[0044] 4. By utilizing natural wind power for oxygenation, the method avoids the human interference problems commonly encountered in mechanical and chemical oxygenation processes. In environmental assessments, mechanical and chemical oxygenation are often deemed unqualified due to their significant intervention in the natural environment. This patented method, however, increases dissolved oxygen levels naturally, avoiding noise pollution from mechanical equipment and residual pollution from chemical agents, thus ensuring the environmental friendliness and sustainability of the water oxygenation process. Attached Figure Description

[0045] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0046] Figure 1 This is a flowchart illustrating the design method of a water oxygenation system based on natural wind power according to the present invention.

[0047] Figure 2 A schematic diagram of the construction method for oxygen-enriched ventilation corridors. Detailed Implementation

[0048] To enable those skilled in the art to better understand the technical solutions of the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Based on the embodiments of the present invention, other similar embodiments obtained by those skilled in the art without creative effort should all fall within the scope of protection of the present invention.

[0049] The present invention will be further described below with reference to the accompanying drawings and preferred embodiments.

[0050] Example 1:

[0051] like Figure 1 As shown in the preferred embodiment of the present invention, a method for designing a water oxygenation system based on natural wind power includes the following steps:

[0052] S1: Based on the oxygen-enriched ventilation corridor construction method, ventilation corridors are set up on both sides of the river section. The height, width and length of the ventilation corridors are designed based on basic environmental parameters. The ventilation corridor design is simulated, verified and optimized.

[0053] In this embodiment, a section of a river was selected as the implementation site. The basic parameters of the background wind environment on both banks of the river were obtained through fixed-point observation using field measurement methods and combined with local meteorological station data. The prevailing wind direction in this river section is northwest, with an average wind speed of 2.5 m / s. The river is 10 meters wide, the river section is 1000 meters long, and the water depth is 3 meters. The water quality is as follows: the current dissolved oxygen concentration is 5 mg / L, and the oxygen saturation concentration in the water is 9 mg / L.

[0054] The design direction of ventilation corridors should be aligned with the prevailing wind direction to ensure that natural wind can flow smoothly into the ventilation corridors and maximize the use of wind power for water oxygenation.

[0055] The ventilation corridor comprises a first wall and a second wall respectively built on both banks of the river section; the height of the ventilation corridor is set above the natural wind level, calculated using the following formula:

[0056] H c =k×h w

[0057] In the formula, H c h is the height of the ventilation corridor. w The height of the natural wind is typically determined by factors such as ground roughness, topography, and the surrounding environment; in this embodiment, it is taken as 2m. k is the environmental coefficient, ranging from 1.5 to 3; specifically, it depends on the geographical environment, wind field conditions, and design objectives; in this embodiment, it is taken as 2.

[0058] H c =k×h w =2×2=4m.

[0059] Next, adjust the height of the ventilation corridor according to the water depth. The impact of the water depth d can be considered using the following adjustment formula:

[0060] H′ c =H c ×(k d ×d)

[0061] In the formula, H′ c For the adjusted ventilation corridor height, k d To adjust the coefficient, for shallower water bodies (e.g., d ≤ 5 meters), k d It can be taken as 0.1-0.2; for deeper water bodies (e.g., d>5 meters), k d It can be taken as 0.2-0.3, and in this embodiment, it is taken as 0.15.

[0062] H′ c =H c +(k d ×d)=4+(0.15×3)=4.45m

[0063] The width of the ventilation corridor is designed based on the width of the river to maximize the natural airflow towards the water surface, calculated using the following formula:

[0064] W c =b×B r

[0065] In the formula, W c B is the distance between the first or second wall of the ventilation corridor and the riverbank. r Let be the width of the river section, and b be the width coefficient, ranging from 0.05 to 0.15; in this embodiment, b is preferably 0.1. Substituting these values, we get:

[0066] W c =0.1×B r =0.1×10=1m

[0067] The length of the ventilation corridor should cover a portion of the river section requiring oxygenation, calculated using the following formula:

[0068] L c =l×L r

[0069] In the formula, L c L is the length of the ventilation corridor. r Let l be the length of the river section, and l be the length coefficient, with l ranging from 0.5 to 0.7, preferably 0.6.

[0070] L c =0.6×L r =0.6×1000=600m

[0071] The designed ventilation corridor is simulated and verified. The river section and the ventilation corridor are scaled up proportionally. The wind field around the ventilation corridor is simulated based on wind tunnel tests to obtain wind speed and direction data inside and outside the ventilation corridor. The design parameters of the ventilation corridor, namely the height, width and length of the ventilation corridor, are simulated and analyzed by simulation numerical method to predict the ventilation effect. If the ventilation effect is lower than the preset ventilation effect, the environmental coefficient, width coefficient and length coefficient are adjusted to optimize the design scheme of the ventilation corridor.

[0072] The ventilation ducts are constructed from weather-resistant and corrosion-resistant materials such as stainless steel and fiberglass. To monitor ventilation effectiveness, they are typically equipped with wind speed monitoring systems that can track wind speed and direction in real time. Furthermore, to maintain optimal operation, maintenance facilities such as access equipment and repair tools are usually required.

[0073] S2: A wind guiding device is installed in the ventilation corridor. The wind guiding device includes several inclined plates, which are installed above the ventilation corridor. The size of the inclined plates is designed according to the width and length of the ventilation corridor.

[0074] The placement of wind-guiding devices (such as inclined plates) should be optimized according to the wind direction to maximize airflow across the water surface, thereby improving gas exchange efficiency. The inclined plates should be positioned above the ventilation corridor, oriented in the same direction as the wind, to guide airflow into the water body, i.e., northwest. Simultaneously, the tilt angle and direction of the inclined plates should be determined based on the prevailing wind direction. The tilt angle should be designed within the range of 10 to 30 degrees, and the specific angle can be adjusted according to the actual wind speed and direction. The stronger the wind speed, the smaller the tilt angle can be to reduce airflow resistance.

[0075] One end of the inclined plate is positioned above the first or second wall, and the other end extends inward into the ventilation corridor. The length of the inclined plate is equal to the distance from the ventilation corridor to the riverbank, and the spacing between the inclined plates is calculated based on the distance between the ventilation corridor and the riverbank.

[0076] D p =p×W c

[0077] In the formula, D p W is the width of the inclined plate. c ρ is the distance between the ventilation corridor and the riverbank, and p is the spacing coefficient of the inclined plates, ranging from 0.4 to 0.6. The inclined plates are tilted along the wind direction within the ventilation corridor, with an tilt angle of 10 to 30 degrees.

[0078] S3: Several auxiliary ventilation devices are evenly spaced on both banks of the river section. The number and spacing of the auxiliary ventilation devices are determined according to the length of the river section.

[0079] The auxiliary ventilation device is a fan. In this embodiment, a linear airfoil vertical axis wind turbine is used, and its specific parameters are as follows: Blade airfoil: NACA0018; Rotor diameter: 1.5 meters; Rated power: 1 kW; Starting wind speed: 2 m / s; Cut-in wind speed: 3 m / s; Cut-out wind speed: 15 m / s; Number of blades: 3.

[0080] The fans should be evenly distributed on both sides of the river section, with one installed at regular intervals.

[0081]

[0082] In the formula, N f If the number of fans is such that one is installed every 50m, then...

[0083]

[0084] Using fluid mechanics and gas exchange theory, the oxygenation effect of ventilation corridors and wind-driven guidance devices is estimated.

[0085] In this embodiment, the surface area A of the water body is 10000 m². 2 Gas exchange coefficient K L Wind speed ν w Estimate based on water turbulence conditions:

[0086]

[0087] Calculation of oxygen exchange rate R0:

[0088] R0 = K L ×A×(C sat -C)=0.1×10000×(9-5)=4000mg / h

[0089] In the formula, C sat C is the oxygen saturation concentration in the water, C is the current dissolved oxygen concentration, and A is the surface area of ​​the water body.

[0090] This indicates that under current conditions, dissolved oxygen can be increased by 4000 mg per hour through ventilation ducts and wind-guided devices. However, the actual effect is typically influenced by various factors, including changes in wind speed, water turbulence, and actual variations in dissolved oxygen concentration. Therefore, in practical applications, on-site monitoring and adjustments may be necessary to ensure the oxygen exchange rate reaches the expected level.

[0091] Example 2:

[0092] A water oxygenation system based on natural wind power, comprising:

[0093] Ventilation corridors are set up on both banks of the river to guide natural airflow toward the water surface;

[0094] A wind-guiding device is installed inside the ventilation corridor to guide and accelerate the flow of natural wind.

[0095] Auxiliary ventilation devices are used to provide supplementary ventilation when the natural wind force is weak;

[0096] Wind speed monitoring system, used to measure wind speed in ventilation corridors;

[0097] The intelligent monitoring system is used to monitor the wind speed in the ventilation corridor and adjust the operation of the auxiliary ventilation device in real time.

[0098] The wind speed monitoring system is installed on the ventilation corridor, and the wind speed monitoring system and the auxiliary ventilation device are electrically connected to the intelligent monitoring system.

[0099] Finally, it should be noted that the above content is only used to illustrate the technical solution of the present invention, and is not intended to limit the scope of protection of the present invention. Simple modifications or equivalent substitutions made by those skilled in the art to the technical solution of the present invention do not depart from the essence and scope of the technical solution of the present invention.

Claims

1. A design method of a water body oxygenation system based on natural wind force, characterized in that, The method comprises the following steps: S1: setting a ventilation corridor on both banks of the river section, the ventilation corridor comprising a first wall surface and a second wall surface respectively established on both banks of the river section, the height, width and length of the ventilation corridor being designed based on the environmental basic parameters, the ventilation corridor design being simulated, verified and optimized; S2: setting a wind guiding device in the ventilation corridor, the wind guiding device comprising a plurality of inclined plates, the inclined plates being arranged above the ventilation corridor, the size of the inclined plates being designed according to the width and length of the ventilation corridor; one end of the inclined plate is arranged above the ventilation corridor, and the other end extends to the inner side of the ventilation corridor; S3: evenly arranging a plurality of auxiliary ventilation devices between the two banks of the river section, the number of the auxiliary ventilation devices being determined according to the length of the river section.

2. The method of designing an oxygenation system for a body of water as claimed in claim 1, wherein, In step S1, the river section to be oxygenated is first confirmed, and the environmental basic parameters of the river section to be oxygenated are confirmed by field measurement, the environmental basic parameters including the length of the river section, the width of the river section, the water flow velocity, the water depth, the wind speed of natural wind and the height of natural wind.

3. The method of designing an oxygenation system for a body of water as claimed in claim 2, wherein, The height of the ventilation corridor is set above the height of natural wind, and the height of the ventilation corridor is adjusted according to the actual water depth, which is calculated by the following formula: ； ； wherein, H is the height of the ventilation corridor, H is the height of the natural wind, k is the environmental coefficient, k ranges from 1.5 to 3, H is the height of the adjusted ventilation corridor, is the adjustment coefficient, ranges from 0.1 to 0.3, and d is the water depth. The width of the ventilation corridor is designed according to the width of the river section, which is calculated by the following formula: In the formula, is the distance from the first wall surface or the second wall surface in the ventilation corridor to the river bank, is the width of the river section, b is the width coefficient, b ranges from 0.05 to 0.15; The length of the ventilation corridor is calculated by the following formula: In the formula, is the length of the ventilation corridor, is the length of the river section, and l is a length coefficient, l ranging from 0.5 to 0.

7.

4. The method of designing an oxygenation system for a body of water as claimed in claim 3, wherein, The ventilation corridor adopts materials with weather resistance and corrosion resistance, and the inner and outer sides of the ventilation corridor are respectively provided with a wind speed monitoring system.

5. The method of designing an oxygenation system for a body of water as claimed in claim 4, wherein, The wind field around the ventilation corridor is simulated based on the wind tunnel experiment, and the wind speed and direction data inside and outside the ventilation corridor are obtained; the design parameters of the ventilation corridor, i.e. the height, width and length of the ventilation corridor, are simulated and analyzed by a simulation numerical method, the ventilation effect is predicted, and if the simulated and predicted ventilation effect is lower than the preset ventilation effect, the environmental coefficient, width coefficient and length coefficient are modified, and the design scheme of the ventilation corridor is optimized.

6. The method of designing an oxygenation system for a body of water as claimed in claim 3, wherein, In step S2, the length of the inclined plate is equal to the distance from the ventilation corridor to the river bank, and the distance between the inclined plates is calculated according to the distance from the ventilation corridor to the river bank: In the formula, is the width of the inclined plate, is the distance from the first wall surface or the second wall surface in the ventilation corridor to the river bank, and p is the inclined plate spacing coefficient, which is 0.4-0.

6.

7. The method of designing an oxygenation system for a body of water as claimed in claim 6, wherein, The inclined plate is inclined along the wind direction in the ventilation corridor, and the inclination angle is 10 to 30 degrees.

8. The method of designing an oxygenation system for a body of water as claimed in claim 1, wherein, In step S3, the auxiliary ventilation device is a fan, which is arranged inside the ventilation corridor and evenly distributed on both banks of the river section at an interval of 50 meters.

9. A natural wind-based water body oxygenation system, characterized in that, It comprises: a ventilation corridor arranged on both banks of a river to guide the flow of natural wind to the water surface; the ventilation corridor comprises a first wall surface and a second wall surface respectively established on both banks of the river section; a wind guiding device arranged inside the ventilation corridor, the wind guiding device comprising a plurality of inclined plates arranged above the ventilation corridor for guiding and accelerating the flow of natural wind; one end of the inclined plate is arranged above the ventilation corridor, and the other end extends to the inner side of the ventilation corridor; an auxiliary ventilation device for auxiliary ventilation in the case of weak wind force of natural wind; a wind speed monitoring system for measuring the wind speed in the ventilation corridor; an intelligent monitoring system for monitoring the wind speed in the ventilation corridor and adjusting the running state of the auxiliary ventilation device in real time.

10. The natural wind based water body oxygenation system as claimed in claim 9, wherein, The wind speed monitoring system is arranged on the ventilation gallery, and the wind speed monitoring system and the auxiliary ventilation device are electrically connected with the intelligent monitoring system respectively.

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