Alga photobioreactor reinforced by cooperation of sunlight and artificial light source

Abstract

The invention discloses an algae photobioreactor reinforced by cooperation of sunlight and an artificial light source, and relates to the technical field of algae reaction, and the algae photobioreactor comprises a reactor main body which comprises an outer cavity and a reaction cavity arranged in the outer cavity; the light source system comprises a condensation system, a sunlight leading-in system, an artificial light source system and an SrYF5 fluorescent light-emitting system, and is used for providing illumination for the reactor main body; and the aeration system is communicated with the reaction cavity in the reactor main body, and gas generated by the aeration system is introduced into the reaction cavity. By combining the multispectral synergistic effect of the sunlight and the artificial light source, the SrYF5 nano fluorescent powder is utilized to realize light wavelength conversion, 320-400nm ultraviolet light is converted into 550-700nm red light, the available spectrum in the microalgae growth process is expanded, the photosynthesis efficiency of the microalgae is improved, and the overall efficiency of the algae photobiological reaction is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of algae reactions, and in particular to an algae photobioreactor enhanced by sunlight and artificial light sources. Background Art

[0002] In the context of the dual carbon goals, biological carbon sequestration is considered one of the greenest and most sustainable carbon sequestration methods. Microalgae, with their numerous advantages, such as their small size and high photosynthetic efficiency, have become a key research target for biological carbon sequestration. Through photosynthesis, microalgae can convert CO2 into a variety of substances, including sugars, proteins, lipids, and pigments, which are widely used in a variety of industries, including food, health products, and energy. As research advances, two major types of algae photobioreactors have been developed: open raceway ponds and closed reactors. However, traditional reactors, whether open or closed, rely heavily on sunlight as a light source, making them highly susceptible to weather fluctuations. Furthermore, there are currently three main methods for utilizing sunlight: direct sunlight through transparent materials or open systems, but this method has low efficiency and is unstable; solar power generation devices are used to convert sunlight into electricity, which is then converted into artificial light, but this method is costly and has high energy losses; and optical fibers and other materials are used to guide light, but these are often point-based, which can lead to uneven light distribution within the reactor. In response to this, some research has begun developing microalgae photobioreactors with built-in light sources. Although the built-in light source solves the traditional reactor's dependence on sunlight, it also objectively increases energy consumption. Therefore, integrating sunlight and artificial light sources into the photobioreactor is particularly important for reducing energy consumption. In addition, existing studies have shown that red and blue light promote the growth of algae. Therefore, integrating sunlight and artificial light sources and converting them into red light has important practical significance for improving the efficiency of microalgae cultivation and promoting the realization of dual carbon goals. However, there are currently two main methods for providing red light for photobioreactors. One is to add filters or red reflectors to traditional light sources. Although this method can convert white light into red light, it will result in a significant reduction in light intensity. The other is to directly use artificial light-emitting devices in specific wavelengths, but this will also lead to an increase in energy consumption.

[0003] In the prior art, Chinese patent publication number CN118772987B discloses a photobioreactor for culturing microalgae and a control method thereof. The reactor of the invention comprises a base frame, a bracket fixedly mounted on the top of the base frame, the bracket consisting of a lower plate, an upper plate and a connecting rod fixedly connecting the upper plate and the lower plate, a pipe tube is mounted on the lower plate, a circulating flow mechanism is provided at the position corresponding to the tube on the upper plate, and a culture tube is provided between the corresponding tube and the circulating flow mechanism, the culture tube consisting of an outer tube and an inner tube, a clamping reversing mechanism and a light source mechanism are provided between the upper plate and the lower plate, and a rotating mechanism for driving the culture tube to continuously rotate is provided between the base frame and the bracket. The control method of the invention comprises establishing a photobioreactor; starting cultivation; regulating culture conditions and re-cultivating. The invention allows the algae liquid to flow back and forth to allow carbon dioxide to fully contact with the microalgae and promote photosynthesis of the microalgae. Chinese patent publication number CN222331895U discloses a A photobioreactor device for microalgae cultivation comprises: an outer container for containing culture fluid, the outer container comprising transparent side walls and a removable upper cover; an inner container for containing culture fluid and microalgae, the inner container being capable of being contained within and removed from the outer container, wherein the inner container comprises transparent side walls, a top screen, and a bottom screen, each of the top screen and the bottom screen comprising a mesh having a mesh size capable of allowing culture fluid and gas to pass therethrough while preventing microalgae from passing therethrough, at least one of the top screen and the bottom screen being removably engageable with the inner container; and a gas circulation unit, the gas circulation unit injecting carbon dioxide-rich gas into the outer container. Chinese Patent Publication No. CN117930421B discloses a light-guiding structure, a photobioreactor, and a microalgae cultivation control method, wherein the light-guiding structure comprises: a light-guiding plate and a light-emitting unit; the light-emitting unit injects light emitted by the light-guiding plate into the interior of the light-guiding plate through a contact surface with the light-guiding plate; and a light-adjusting factor is provided within the light-guiding plate.The structure and method in this embodiment utilize a light adjustment factor provided inside the light guide plate to adjust the intensity and uniformity of the light incident from the light unit into the light guide plate and propagating to the outside of the light guide plate, as well as to adjust the propagation distance of the light propagating inside the light guide plate, so as to achieve uniform emission of light from the light guide plate to the inside of the photobioreactor, provide uniform and suitable lighting conditions for the microalgae cultured in the photobioreactor, thereby optimizing the living environment of the microalgae, and improving the light energy utilization efficiency of the microalgae culture and the production efficiency of the microalgae products; Chinese patent No. CN116463197B discloses a carbon fixation photobioreactor and its application, relating to the technical field of photobioreactors, including a reaction tank, a lighting lamp board, a spraying mechanism, and a ventilation mechanism, the reaction tank including a base, the surface of the base being fixedly connected to a transparent culture chamber, the lighting lamp board being provided on the outer surface of the culture chamber, the light of the lighting lamp board being able to irradiate the inside of the culture chamber, the interior of the reaction tank being provided with a valve mechanism, a power mechanism, and a pipeline: the carbon fixation photobioreactor A bioreactor and its application, by arranging a lighting lamp panel, a spraying mechanism, a ventilation mechanism, a power mechanism and a valve mechanism to cooperate with each other, so that a mixed liquid containing microalgae and its culture medium can be sprayed downward from the top of the culture chamber through the spraying mechanism, fully mixed with the introduced gas, and improve the efficiency of absorbing carbon dioxide therein through photosynthetic reaction, thereby achieving the effect of improving carbon fixation efficiency; Chinese patent announcement number CN219824209U discloses an airlift photobioreactor with a built-in LED light source for microalgae cultivation, including an air intake unit, a plurality of photoreaction units and a monitoring unit; the air intake unit is used to provide gas (CO2 or CO2N2) to the photoreaction unit; the photoreaction unit includes an outer wall, a guide tube is fixed in the outer wall, and an LED light strip for providing light is installed on the outer surface of the guide tube; an air bubble stone is provided at the bottom of the outer wall, and the air intake end of the air bubble stone is connected to the air intake unit; an exhaust port for gas discharge is also installed on the outer wall; and the monitoring unit is used to monitor the pH of the culture solution in the photoreaction unit. The airlift photobioreactor of the utility model has the characteristics of uniform irradiation, high gas-liquid mass transfer efficiency, high production efficiency, convenient operation, energy saving and environmental protection.

[0004] However, most of these technologies rely on a single LED light source, or solely use sunlight as the illumination method. This single light source application limits the effective utilization and control flexibility of light energy. While LED light sources are highly controllable, they are relatively expensive and may not fully meet the spectral matching requirements of all types of microalgae. Sunlight, while low-cost, is subject to weather and geographical constraints, making it difficult to stably control the intensity and duration of illumination. These limitations have resulted in the failure to maximize the effectiveness and economic benefits of light energy in the microalgae cultivation process.

[0005] Therefore, those skilled in the art are committed to developing an algae photobioreactor that is more flexible in illumination and can enhance the efficiency of microalgae cultivation by combining sunlight with artificial light sources. Summary of the Invention

[0006] In view of the above-mentioned defects of the prior art, the technical problem to be solved by the present invention is to develop an algae photobioreactor that is more flexible in illumination and can enhance the efficiency of microalgae cultivation by combining sunlight with artificial light sources.

[0007] To achieve the above objectives, the present invention provides an algae photobioreactor enhanced by sunlight and artificial light sources, comprising:

[0008] Reactor body: including an outer cavity and a reaction cavity built into the outer cavity;

[0009] Light source system: including a focusing system, a sunlight introduction system, an artificial light source system and an SrYF5 fluorescent luminescence system, providing illumination for the reactor body;

[0010] Aeration system: connected to the reaction chamber inside the reactor body, and the gas generated by the aeration system is introduced into the reaction chamber.

[0011] In a preferred embodiment of the present invention, the reactor body is a transparent or translucent cylindrical reactor.

[0012] In a preferred embodiment of the present invention, the focusing system is a sun-tracking Niefels lens focusing device.

[0013] In a preferred embodiment of the present invention, the sunlight introduction system is an optical fiber, which transmits the light source concentrated by the focusing system to the SrYF5 fluorescent luminescence system through the optical fiber, and then evenly propagates it into the reactor body through the SrYF5 fluorescent luminescence system.

[0014] In a preferred embodiment of the present invention, the artificial light source is an LED lamp.

[0015] In a preferred embodiment of the present invention, the SrYF5 fluorescent luminescence system includes a light guide column and a fluorescent light-emitting tube whose inner layer is coated with SrYF5 nano-phosphor powder. The light guide column and the artificial light source are placed in the fluorescent light-emitting tube. The fluorescent light-emitting tube is located in the outer cavity of the reactor body, and the SrYF5 fluorescent luminescence system converts 320-400nm ultraviolet light into 550-700nm red light.

[0016] In a preferred embodiment of the present invention, the aeration system includes an air pump and an aeration plate. The air pump is located outside the reactor body and is connected to the bottom of the reaction chamber by controlling the air valve on the air pipe connected to the air pump. The air pipe is sealed with the reactor body and connected to the aeration plate. The aeration plate is fixedly installed at the bottom inside the reaction chamber.

[0017] In a preferred embodiment of the present invention, the reactor further comprises a temperature control system, wherein the temperature control system comprises an electric heating rod, and the electric heating rod is located in the outer cavity.

[0018] In a preferred embodiment of the present invention, a detection electrode is further included. The detection electrode is located above the reaction chamber in the outer cavity, and the detection electrode is electrically connected to the intelligent processing terminal.

[0019] Preferably, the detection electrodes include pH detection electrodes, DO value detection electrodes and conductivity detection electrodes, and pH detection holes, DO value detection holes and conductivity detection holes corresponding to the pH detection electrodes, DO value detection electrodes and conductivity detection electrodes are respectively provided above the outer cavity.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. The present invention uses rare earth single-doped SrYF5 phosphor to achieve efficient conversion of red and blue light, thereby promoting the photosynthesis efficiency of microalgae and improving the operating efficiency of the reactor. At the same time, it also reduces energy consumption and improves the utilization efficiency of light energy, achieving dual economic and environmental benefits, and helping to promote the large-scale application of microalgae photobioreactors.

[0022] 2. The present invention optimizes the light distribution structure inside the reactor: through total internal reflection of the light guide column, the point light emission form is converted into a uniform columnar light emission form, avoiding the existence of light blind spots in the reactor. This allows the algae liquid in the reactor to receive the same intensity of light conditions to the maximum extent, improves the efficiency of light energy utilization, promotes the operating efficiency of the reactor, and increases the cultivation speed of microalgae.

[0023] 3. This invention achieves significant technical benefits by combining sunlight with artificial light sources in a microalgae photobiological system. First, the use of natural sunlight significantly reduces energy consumption, particularly under conditions of ample sunlight, minimizing reliance on electrically powered artificial light sources. Second, the complementary use of sunlight and artificial light sources ensures the continuity and stability of illumination under varying environmental conditions, effectively compensating for their respective shortcomings, such as the instability of sunlight and the high cost of LEDs. This flexible illumination control mechanism improves the efficiency and reliability of the anaerobic digestion process and optimizes overall system performance.

[0024] The concept, specific structure and technical effects of the present invention will be further described below in conjunction with the accompanying drawings to fully understand the purpose, characteristics and effects of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 The SrYF5:Eu provided by the present invention 3+ Nanopowder fluorescence excitation luminescence spectrum;

[0026] Figure 2 This is a schematic diagram of the structure of the red and blue light algae photobioreactor provided by the present invention that is enhanced by sunlight and artificial light sources;

[0027] Figure 3 A top view of the reactor body provided by the present invention;

[0028] Figure 4 This is an enlarged view of the structural schematic diagram of the fluorescent light-emitting tube provided by the present invention;

[0029] Figure 5 for Figure 4 A top view of

[0030] Figure 6 This is a graph showing the average light intensity and light area ratio of the six side-emitting light-guiding fibers in the cylindrical reactor;

[0031] Figure 7 This is the visualization result of Fluent light intensity field simulation and the vertical light intensity distribution change diagram. DETAILED DESCRIPTION

[0032] The following describes several preferred embodiments of the present invention with reference to the accompanying drawings to make its technical content clearer and easier to understand. The present invention can be embodied in many different forms of embodiments, and the scope of protection of the present invention is not limited to the embodiments mentioned herein.

[0033] In the drawings, components with the same structure are denoted by the same numerical numerals, and components with similar structure or function are denoted by similar numerical numerals.

[0034] This invention enhances the photosynthetic efficiency of microalgae by combining the multispectral synergy of sunlight and artificial light sources, thereby improving the overall efficiency of the algae's photobiological reactions. Specifically, the invention uses SrYF5 nano-phosphors to achieve red-to-blue light conversion, promoting algae growth under red and blue light illumination conditions. By regulating and controlling the spectral range, the reaction process is optimized.

[0035] Among them, the SrYF5 nano phosphor provided by the present invention is a rare earth single-doped SrYF5 phosphor, preferably Eu 3+ The preparation method of doped SrYF5 nano-phosphor is as follows:

[0036] Prepare Sr(NO₃)₂, NH₄F, and Y(NO₃)₃·6H₂O as a 0.4 mol / L liquid reagent, and the rare earth nitrate Eu(NO₃)₃ as a 0.2 mol / L liquid reagent. Add 15 ml of deionized water to a beaker, add 0.4 g of EDTA, and stir magnetically until completely dissolved. Add 5 ml of Sr(NO₃)₂, 5 ml of Y(NO₃)₃·6H₂O, and 25 ml of NH₄F and stir magnetically to mix thoroughly. Taking 4mmol system concentration and 20mol% doping concentration as an example, add 4ml of Eu(NO3)3 liquid reagent, adjust pH to 4-5 with 5M NaOH and stir for 30min. Transfer the solution in the beaker to a 100ml polytetrafluoroethylene liner and hydroheat at 180℃ for 10h. Take out the hydrothermal kettle and cool it to room temperature. Take out the contents and wash and centrifuge them several times with deionized water and anhydrous ethanol at 5000r / min. Dry the solid matter at 60℃ and grind the obtained sample in an agate mortar to obtain SrYF5:Eu with an average particle size of about 80nm. 3+ Nanopowder.

[0037] The following describes the invention through specific embodiments.

[0038] Example 1 Algae photobioreactor enhanced by sunlight and artificial light source

[0039] like Figure 1 、 Figure 2 The algae photobioreactor shown is a solar light synergistically enhanced artificial light source, comprising:

[0040] The reactor body includes an outer cavity 9 and a reaction cavity 10 built into the outer cavity 9; the reactor body is a transparent or translucent cylindrical reactor body that can accommodate a culture liquid volume of up to 500L.

[0041] Light source system: includes a focusing system, a sunlight introduction system and an artificial light source, which provide lighting for the reactor body; among them, the focusing system is a sun-tracking Nefelds lens focusing device 1, and the sunlight introduction system is an optical fiber 2, which transmits the light source concentrated by the focusing system to the reactor body through the optical fiber 2. The artificial light source is an LED lamp 3, and the reactor body is provided with an optical fiber hole 19 and an LED lamp line hole 20 for the optical fiber 2 and LED lamp 3 to pass through.

[0042] like Figure 3 、 Figure 4As shown, the light source system also includes a SrYF5 fluorescent light-emitting system, which includes a light guide column 4 and a fluorescent light-emitting tube 5 whose inner layer is coated with SrYF5 nano-phosphor. The light guide column 4 and the artificial light source are placed in the fluorescent light-emitting tube 5. The fluorescent light-emitting tube 5 is located in the outer cavity 9 of the reactor body, and a fluorescent light-emitting tube hole 14 is provided on the reactor body for the fluorescent light-emitting tube 5 to pass through.

[0043] When the light source system is used, sunlight is collected by the sun tracking Nefelds lens focusing device 1, and the sunlight introduction system transmits the external sunlight to the reactor body through a group of optical fibers 2. After the sunlight is introduced into the reactor body through the optical fibers 2, it will further undergo total internal reflection through the light guide column 4, realizing the conversion of the point-like luminescence of the optical fiber 2 to the columnar luminescence of the light guide column 4, so that the optical fiber 2 can be spread into the reactor as evenly as possible. Different types of artificial light sources (such as LED lights, etc.) can also be installed in the reactor as needed to provide supplementary lighting when sunlight is insufficient; when sunlight is sufficient, sunlight is transmitted to the light guide column 4 through the focusing system and the sunlight introduction system, and the light emitted by the light guide column 4 is converted into red and blue light after irradiating the SrYF5 nano-phosphor powder in the inner layer of the fluorescent light-emitting tube 5, thereby achieving the expansion of the luminous area, which is conducive to subsequent maintenance and replacement; when sunlight is insufficient, the light emitted by the artificial light source can also be converted into red and blue light by the SrYF5 nano-phosphor powder, ensuring sufficient light conditions for algae growth.

[0044] The aeration system is connected to the reaction chamber 10 within the reactor body and introduces the generated gas into the reaction chamber 10. It includes an air pump 7 and an aeration plate 8. The air pump 7 is located outside the reactor body and is connected to the bottom of the reaction chamber 10 by controlling an air valve 6 on an air pipe connected to the air pump 7. The air pipe is sealed to the reactor body and connected to the aeration plate 8, which is fixedly installed at the bottom of the reaction chamber 10. The aeration plate 8 disperses the gas pumped by the air pump 7, reducing the impact of bubbles on the microalgae cells. It also ensures the circulation of the algae solution within the reactor, preventing temperature stratification and microalgae cell sedimentation.

[0045] In addition, a temperature control system is also configured inside the reactor body. The temperature control system is mainly composed of an electric heating rod 11. The electric heating rod 11 ensures the optimal temperature required for the growth of microalgae and promotes the growth of microalgae. The reactor body is provided with an electric heating rod hole 15 through which the power supply heating rod 11 passes.

[0046] The reactor body also includes a detection electrode 12, which is located above the reaction chamber 10 in the outer cavity and is electrically connected to the intelligent processing terminal 13. The detection electrode 12 includes a pH detection electrode, a DO value detection electrode, and a conductivity detection electrode. A pH detection hole 16, a DO value detection hole 17, and a conductivity detection hole 18 corresponding to the pH, DO value, and conductivity detection electrodes are provided above the outer cavity 20, respectively.

[0047] By combining sunlight with artificial light and introducing SrYF5 nanophosphors, this invention not only achieves efficient red-blue light conversion but also provides ideal reaction conditions for microalgae growth by precisely controlling the internal environmental parameters of the reactor. This reactor has broad application prospects and market potential in wastewater treatment, carbon capture, energy production, and other fields.

[0048] The reactor is used as follows: First, after installing the focusing system in a suitable location for lighting, add the algae solution to be cultivated into the reaction chamber 10 within the reactor body. On clear days, sunlight is guided through the optical fiber 2 into the fluorescent tube 5, passing through the fluorescent layer 21 coated with SrYF5 nano-phosphor powder to provide more suitable light for the growth of microalgae. At night or when sunlight is scarce, the LED light 3 is turned on, also providing more suitable light for the growth of microalgae through the fluorescent layer 21. An electric heating rod 11 is used to control the temperature of the algae solution. An air pump 7 is used to supply the necessary carbon dioxide for the growth of the microalgae through the air valve 6 and the aeration plate 8, which also serves to stir the algae solution. The pH detection hole 14, the DO value detection hole 17, and the conductivity detection hole 18 are detected using the corresponding detection electrodes 12, and the relevant data is collected in the intelligent processing terminal 13.

[0049] Example 2 Fluent numerical simulation experiment of the light field inside the cylindrical reactor enhanced by light-guiding fiber

[0050] Example 1: A light field simulation of a transparent cylindrical reactor with a diameter of 0.30 m and an effective height of 1.20 m was performed based on ANSYS Fluent 2024R2. The purpose was to evaluate the irradiation distribution characteristics of the reactor liquid phase after six sidewall light-guiding optical fibers (diameter 3 mm, insertion depth 0.9 m) introduced outdoor sunlight. The geometric model was constructed using SpaceClaim, and the fiber end faces were uniformly set to a constant irradiation boundary (incident flux 2150 μmol / m 2 , which corresponds to the effective light intensity after filtering out the ultraviolet region <370nm under cloudless conditions at noon). The flow field adopts the steady-state incompressible turbulence model (k–εRNG), and the liquid phase absorption coefficient is set to 0.35m -1 , scattering coefficient 0.12m -1 The radiation model uses the DO model and anisotropic scattering is enabled. The total number of cells after mesh encryption is about 1.2×106 , the minimum size of the fiber-liquid interface is 0.5mm, meeting y + The radiation-turbulence coupling accuracy requirement is ≈ 1. In terms of boundary conditions, the top of the reactor is set as the "escape surface" to simulate the partial reflection and exchange of photons with the atmosphere after reaching the liquid surface; the bottom and side walls are both translucent solids with a refractive index of 1.49. The iterative convergence criterion is set to 10 -6 .

[0051] The calculation results are as follows Figure 6 、 Figure 7 As shown in the figure, after coupling with six sidewall light guide fibers, the average light intensity of the entire reactor volume is increased to 4.65Wm -2 ; When the light intensity threshold is 1W m -2 When demarcating the effective light zone, the volume fraction of the light zone reached 0.58, meaning that 58% of the culture volume was within the irradiance range sufficient for microalgae photosynthesis. Compared to a control model with top-incident light only, this nearly doubled the effective light zone fraction and achieved a more uniform light intensity distribution, significantly reducing the radial light attenuation gradient in the cylindrical reactor and providing a more optimal light environment for subsequent large-scale microalgae cultivation.

[0052] The preferred embodiments of the present invention have been described in detail above. It should be understood that numerous modifications and variations based on the concepts of the present invention are possible without inventive effort by those skilled in the art. Therefore, any technical solution that can be derived by one skilled in the art through logical analysis, reasoning, or limited experimentation based on the concepts of the present invention and the prior art should be within the scope of protection defined by the claims.

Claims

1. An algae photobioreactor enhanced by sunlight and artificial light source, characterized in that: include: Reactor body: including an outer cavity and a reaction cavity built into the outer cavity; Light source system: including a focusing system, a sunlight introduction system, an artificial light source system and an SrYF5 fluorescent luminescence system, providing illumination for the reactor body; Aeration system: connected to the reaction chamber inside the reactor body, and the gas generated by the aeration system is introduced into the reaction chamber.

2. The algae photobioreactor enhanced by sunlight and artificial light source according to claim 1, characterized in that: The reactor body is a transparent or translucent cylindrical reactor.

3. The algae photobioreactor enhanced by sunlight and artificial light source according to claim 1, characterized in that: The focusing system is a sun-tracking Niefeiz lens focusing device.

4. The algae photobioreactor enhanced by sunlight and artificial light source according to claim 1, characterized in that: The sunlight introduction system is an optical fiber, which transmits the light source concentrated by the focusing system to the SrYF5 fluorescent luminescence system through the optical fiber, and then evenly spreads it into the reactor body through the SrYF5 fluorescent luminescence system.

5. The algae photobioreactor enhanced by sunlight and artificial light source according to claim 1, characterized in that: The artificial light source is an LED lamp.

6. The algae photobioreactor enhanced by sunlight and artificial light source according to claim 1, characterized in that: The SrYF5 fluorescent luminescence system includes a light guide column and a fluorescent light-emitting tube with an inner layer coated with SrYF5 nano-phosphor powder. The light guide column and the artificial light source are placed in the fluorescent light-emitting tube. The fluorescent light-emitting tube is located in the outer cavity of the reactor body. The SrYF5 fluorescent luminescence system converts 320-400nm ultraviolet light into 550-700nm red light.

7. The algae photobioreactor enhanced by sunlight and artificial light source according to claim 1, characterized in that: The aeration system includes an air pump and an aeration plate. The air pump is located outside the reactor body and is connected to the bottom of the reaction chamber by controlling the air valve on the air pipe connected to the air pump. The air pipe is sealed with the reactor body and connected to the aeration plate. The aeration plate is fixedly installed at the bottom of the reaction chamber.

8. The algae photobioreactor enhanced by sunlight and artificial light source according to claim 1, characterized in that: The reactor further comprises a temperature control system, wherein the temperature control system comprises an electric heating rod, and the electric heating rod is located in the outer cavity.

9. The algae photobioreactor enhanced by sunlight and artificial light source according to claim 1, characterized in that: It also includes a detection electrode, which is located above the reaction chamber in the outer cavity and is electrically connected to the intelligent processing terminal.

10. The algae photobioreactor enhanced by sunlight and artificial light source according to claim 9, characterized in that: The detection electrodes include pH detection electrodes, DO value detection electrodes and conductivity detection electrodes, and pH detection holes, DO value detection holes and conductivity detection holes corresponding to the pH detection electrodes, DO value detection electrodes and conductivity detection electrodes are respectively provided above the outer cavity.

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