Algae-light complementary microalgae culture system

Abstract

The utility model provides an algae-light complementary microalgae culture system, which comprises a photovoltaic cell module, the photovoltaic cell module comprises an electric sunshade net, a storage battery and a plurality of groups of solar photovoltaic panels, and the electric sunshade net and the plurality of groups of solar photovoltaic panels are electrically connected with the storage battery; the sewage storage and transportation module is located under the electric sunshade net and electrically connected with the storage battery, and the sewage storage and transportation module is used for sewage storage, sterilization and temperature control; the microalgae culture module is located under the electric sunshade net and connected with the sewage storage and transportation module, and the microalgae culture module is used for culturing target microalgae; the remote control module is electrically connected with the electric sunshade net, the sewage storage and transportation module and the microalgae culture module. The problems that a photovoltaic power generation technology mentioned in the background technology is low in space utilization efficiency, and smoke CO2 and waste water generated by a biomass power plant are difficult to treat are solved.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of microalgae cultivation, and more particularly to an algal light complementary microalgae BACKGROUND

[0002] With the intensification of global climate change and energy consumption, finding clean and renewable energy has become a global focus. Solar energy, as a green energy, its wide application not only can alleviate the consumption of traditional fossil energy, but also has the potential to reduce greenhouse gas emissions. However, the existing solar energy utilization technology, especially photovoltaic power generation technology, still has problems such as low space utilization efficiency. How to optimize the spatial layout of photovoltaic cells and improve the comprehensive utilization efficiency has become an important challenge in technical research and development.

[0003] At the same time, water pollution, especially the discharge of high-nitrogen and phosphorus wastewater, is easy to cause water eutrophication and cause water bloom, which has become an urgent environmental problem to be solved. Although traditional wastewater treatment technology can effectively reduce the concentration of pollutants, it often accompanies problems such as high energy consumption and complex equipment, and the nutrients such as nitrogen and phosphorus in the wastewater cannot be effectively utilized. At the same time, the flue gas discharged by power plants usually contains a high concentration of CO2, which is one of the main causes of global warming. Microalgae, as a kind of efficient photosynthesis organism, not only can absorb nitrogen and phosphorus nutrients in water, but also can fix carbon dioxide in power plant flue gas through photosynthesis, realizing the dual purpose of environmental governance and resource utilization. At the same time, microalgae can also be used as fertilizers and feed for economic benefits. Therefore, microalgae cultivation system has gradually become a research hotspot in the field of wastewater treatment.

[0004] At present, the combination of microalgae cultivation system and photovoltaic technology has gradually attracted attention. By combining photovoltaic power generation with microalgae cultivation, not only can the photovoltaic land space be fully utilized, but also the solar energy can be effectively utilized to provide the required electric energy for the microalgae cultivation system, and the growth environment of microalgae can be optimized. However, the existing photovoltaic-microalgae system is mostly single structure design, and cannot realize efficient cooperation between systems, with low space utilization rate, and cannot fully utilize the potential of solar energy resources.

[0005] Therefore, the development of a microalgae cultivation system that can realize efficient utilization of solar energy, photovoltaic technology, biomass power plant flue gas CO2 absorption and wastewater resources, not only can improve the space utilization efficiency of photovoltaic power generation, but also can realize resource recycling by efficiently treating the flue gas CO2 and wastewater generated by biomass power plants, which has important practical application value and broad market prospect, and provides strong technical support for sustainable development. SUMMARY

[0006] The purpose of the embodiment of the present application is to provide an algal light complementary microalgae cultivation system, to solve the problems of low space utilization efficiency of photovoltaic power generation technology, and difficult treatment of CO2 and wastewater generated by biomass power plants.

[0007] To achieve the above-mentioned purpose, the technical scheme adopted by the present application is: an algal light complementary microalgae cultivation system, comprising:

[0008] A photovoltaic cell module, comprising a motorized sunshade net, a battery and a plurality of solar photovoltaic panels, and the motorized sunshade net and the plurality of solar photovoltaic panels are electrically connected with the battery;

[0009] A sewage storage and transportation module located directly below the motorized sunshade net and electrically connected with the battery, the sewage storage and transportation module is used for storing, sterilizing and temperature controlling the sewage;

[0010] A microalgae culture module located directly below the motorized sunshade net and connected with the sewage storage and transportation module, the microalgae culture module is used for culturing target microalgae;

[0011] A remote control module electrically connected with the motorized sunshade net, the sewage storage and transportation module and the microalgae culture module.

[0012] Preferably, the sewage storage and transportation module comprises:

[0013] A sewage storage and transportation tank connected with a leachate treatment device of a biomass power plant, the sewage storage and transportation tank is used for storing sewage from the leachate treatment device to provide nitrogen and phosphorus elements required for the growth of target microalgae;

[0014] An ultraviolet sterilizer connected with the sewage storage and transportation tank, the ultraviolet sterilizer is used for sterilizing the sewage coming out of the sewage storage and transportation tank;

[0015] A temperature control unit connected with the ultraviolet sterilizer and electrically connected with the remote control module to ensure that the temperature of the sewage is suitable for the growth of target microalgae.

[0016] Preferably, the ultraviolet sterilizer comprises:

[0017] A shell;

[0018] An ultraviolet lamp tube penetrating through the shell and connected with the shell at both ends;

[0019] A quartz tube wound on the ultraviolet lamp tube so that the sewage receives more ultraviolet radiation during passing through the quartz tube, and the quartz tube has a water inlet and a water outlet.

[0020] Preferably, the inner wall of the shell is provided with a reflective layer to reflect ultraviolet radiation onto the quartz tube, further improving the utilization rate of ultraviolet and sterilization effect.

[0021] Preferably, the temperature control unit comprises:

[0022] The cabinet body is provided with an inlet and an outlet, and the inlet is connected to the water outlet;

[0023] The frequency conversion pump is installed in the cabinet body, and the frequency conversion pump is electrically connected to the remote control module;

[0024] The electric heating tank is installed in the cabinet body, and the electric heating tank is connected to the frequency conversion pump;

[0025] The frequency conversion pump and the electric heating tank are both electrically connected to the storage battery;

[0026] The frequency conversion pump adjusts the operating frequency of the frequency conversion pump according to the frequency conversion command signal sent by the remote control module, so as to achieve the purpose of sewage temperature regulation.

[0027] Preferably, the microalgae culture module comprises:

[0028] The microalgae culture reactor is connected to the outlet of the cabinet body, and an aerator is installed in the microalgae culture reactor;

[0029] The carbon dioxide storage tank is connected to the aerator through a pipeline, and the carbon dioxide storage tank is used to store carbon dioxide and inject carbon dioxide into the microalgae culture reactor through the aerator, so as to provide necessary carbon source for target microalgae culture;

[0030] The temperature and light sensor is arranged on the microalgae culture reactor, and is used to detect the temperature of the water body in the microalgae culture reactor and the light intensity irradiated on the target microalgae, and send the temperature signal and the light intensity signal to the remote control module.

[0031] Preferably, the microalgae culture module further comprises a carbon dioxide separation device, which is arranged between the carbon dioxide storage tank and the biomass power plant, and is used to filter and cool the flue gas CO2 generated by the biomass power plant and then deliver it to the carbon dioxide storage tank for use in target microalgae culture, while reducing the emission of flue gas CO2 from the biomass power plant.

[0032] Preferably, the carbon dioxide separation device comprises:

[0033] The body is provided with a water cooling sleeve and a filter cavity, and the water cooling sleeve is connected to the filter cavity.

[0034] An active carbon filler layer is arranged in the filtering cavity close to the carbon dioxide outlet;

[0035] A primary filtering fiber membrane is arranged in the filtering cavity;

[0036] A secondary filtering fiber membrane is connected to the active carbon filler layer;

[0037] An airflow channel is formed between the primary filtering fiber membrane and the secondary filtering fiber membrane, and is connected to the airflow channel outlet arranged on the body;

[0038] The flue gas first passes through the primary filtering fiber membrane for preliminary filtration, and then passes through the secondary filtering fiber membrane to separate out carbon dioxide, and then passes through the isolation fiber membrane into the active carbon filler layer for adsorption and drying, and then is discharged through the carbon dioxide outlet; the remaining flue gas mixed gas is discharged through the airflow channel outlet.

[0039] Preferably, the water cooling jacket is provided with spiral guide plates to increase the heat exchange efficiency of the cooling liquid and the flue gas.

[0040] Preferably, the operation process of the algal light complementary microalgae cultivation system is as follows:

[0041] I. The inorganic nutrient salt-containing sewage in the biomass power plant leachate treatment equipment is first pumped into a sewage storage tank, and then sequentially passes through an ultraviolet sterilizer for disinfection treatment and a temperature control unit for temperature adjustment, and then enters the microalgae culture reactor, thereby continuously and stably providing the necessary nitrogen and phosphorus nutrients for the photosynthesis of microalgae cells;

[0042] II. The aerator in the microalgae culture module injects the biomass power plant flue gas carbon dioxide treated by the carbon dioxide separation device into the microalgae suspension in the form of bubbles, thereby providing sufficient carbon source for the photosynthesis of microalgae cells;

[0043] III. The temperature and light sensor is used to monitor the light intensity parameter and water temperature parameter in the microalgae culture reactor, and feedback the data to the remote control module through the control terminal; when the light intensity exceeds the set threshold value, the remote control module will give an automatic deployment command to the electric sunshade system installed above the microalgae culture reactor and will be automatically deployed under the support of the storage battery, thereby moderately reducing the entry of direct sunlight and preventing the influence of excessive light on the normal growth of microalgae; on the contrary, when the light intensity is lower than the threshold value, the remote control module will give an automatic folding command to the electric sunshade system installed above the microalgae culture reactor and the sunshade system will be automatically folded under the support of the storage battery, thereby increasing the reception of natural light by the system and providing more sufficient light for the microalgae to improve the photosynthesis efficiency thereof;

[0044] IV. When the water temperature in the microalgae cultivation reactor is higher than the preset temperature, the remote control module converts the electrical signal received from the temperature and light sensor into a command signal to the variable frequency pump to increase the flow frequency, thereby accelerating the flow of wastewater in the system and rapidly mixing it with the wastewater in the electric heating tank to achieve cooling. When the water temperature in the microalgae cultivation reactor is lower than the preset temperature, the remote control module converts the electrical signal received from the temperature and light sensor into a command signal to the variable frequency pump to decrease the flow frequency, maintaining the optimal temperature range required for microalgae growth.

[0045] The beneficial effects of the algae-photosynthetic microalgae cultivation system provided in this application are as follows:

[0046] Compared with the prior art, the present invention has the following advantages:

[0047] (1) Make full use of the photovoltaic space between photovoltaic panels for microalgae cultivation and sewage treatment to reduce the waste of land resources;

[0048] (2) Through photovoltaic cell modules, the system can convert solar energy into electrical energy to power the operation of various units of the system, such as water pumps, ultraviolet sterilizers, aerators and temperature control units, thereby reducing the consumption of traditional energy and achieving energy self-sufficiency.

[0049] (3) The electric shade net works with the sensor to automatically adjust the shading state according to the actual light intensity, so as to avoid the damage of strong light to microalgae or the problem of insufficient light, provide the most suitable light conditions for microalgae, and promote the maximization of photosynthetic efficiency.

[0050] (4) The temperature control unit in the system can automatically heat or cool the water according to the water temperature changes fed back by the sensor, so as to ensure that the water temperature for microalgae cultivation is always in the optimal range, thereby improving the growth rate and biomass output of microalgae.

[0051] (5) By using wastewater rich in nutrients such as nitrogen and phosphorus as a microalgae culture medium, the wastewater problem is effectively treated, while providing the necessary nutrient source for microalgae, thus realizing environmentally friendly wastewater resource utilization.

[0052] (6) Using CO2 from wastewater and flue gas generated by biomass power plants as nitrogen, phosphorus and carbon sources for microalgae cultivation can not only purify the high nitrogen and phosphorus wastewater generated by biomass power plants, but also effectively fix CO2 from the flue gas of biomass power plants, which is an effective measure to mitigate climate change. Attached Figure Description

[0053] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0054] Figure 1 This is a schematic diagram of the structure of a microalgae cultivation system with algae-photosynthesis provided in an embodiment of this application;

[0055] Figure 2 This is a three-dimensional structural diagram of the ultraviolet sterilizer provided in the embodiments of this application;

[0056] Figure 3 This is a schematic diagram of the internal structure of the ultraviolet sterilizer provided in the embodiments of this application;

[0057] Figure 4 This is a schematic diagram of the structure of the temperature control unit provided in an embodiment of this application;

[0058] Figure 5 This is a cross-sectional structural schematic diagram of the carbon dioxide separation device provided in the embodiments of this application.

[0059] The following are the labeling elements in the figure:

[0060] 1. Solar photovoltaic panels; 2. Sewage storage and transportation tank; 3. Valves; 4. Ultraviolet sterilizer; 401. Shell; 402. Ultraviolet lamp; 403. Quartz tube; 404. Inlet; 405. Outlet; 5. Temperature control unit; 501. Cabinet; 502. Variable frequency pump; 503. Electric heating tank; 504. Inlet; 505. Outlet; 6. Battery; 7. Electric shade net; 8. Carbon dioxide separator; 801. Main body; 802. 803. Flue gas inlet; 804. Carbon dioxide outlet; 805. Water-cooled jacket; 806. Filter chamber; 807. Coolant inlet; 808. Coolant outlet; 809. Activated carbon packing layer; 810. Primary filter fiber membrane; 811. Secondary filter fiber membrane; 812. Separation fiber membrane; 813. Airflow channel outlet; 814. Spiral guide plate; 9. Microalgae cultivation reactor; 10. Temperature and light sensor; 11. Carbon dioxide storage tank; 12. Column. Detailed Implementation

[0061] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0062] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0063] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0064] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0065] Please refer to the following: Figures 1 to 5 The present application will now describe a microalgae cultivation system with algae-photosynthetic complementarity provided in the embodiments.

[0066] The algae-photovoltaic complementary microalgae cultivation system is built on open ground near a biomass power plant; the algae-photovoltaic complementary microalgae cultivation system consists of four major modules: photovoltaic cell module, wastewater storage and transportation module, and microalgae cultivation module.

[0067] The specific photovoltaic module consists of an electric shading net 7, a battery 6, and multiple sets of solar photovoltaic panels 1. The electric shading net 7 and the multiple sets of solar photovoltaic panels 1 are all electrically connected to the battery 6. For the specific structure of the electric shading net 7, please refer to CN220173953U, which will not be described in detail here. The multiple sets of solar photovoltaic panels 1 are laid parallel and diagonally on the photovoltaic ground. The multiple sets of solar photovoltaic panels 1 are all supported by columns 12, and the angle between the solar photovoltaic panels 1 and the ground is no greater than 50°. The photovoltaic panels are connected to the battery 6 through wires to convert solar energy into electrical energy and store it in the battery 6 for use by the system's electrical equipment. The multiple sets of solar photovoltaic panels 1 are distributed around the electric shading net 7.

[0068] A wastewater storage and transportation module is located directly below the electric shade net 7 and is electrically connected to the battery 6. This module is used for wastewater storage, sterilization, and temperature control. The module includes: a wastewater storage tank 2, connected to the leachate treatment equipment of the biomass power plant, used to store wastewater from the leachate treatment equipment to provide nutrients such as nitrogen and phosphorus needed for the growth of target microalgae; and a secondary anaerobic membrane effluent outlet pipe for the wastewater storage tank 2; and an ultraviolet sterilizer 4. Connected to the wastewater storage tank 2, the ultraviolet sterilizer 4 is used to sterilize the wastewater exiting the wastewater storage tank 2. Specifically, the ultraviolet sterilizer 4 includes: a housing 401; an ultraviolet lamp 402, which penetrates the housing 401 and is connected to the housing 401 at both ends; a quartz tube 403, which is wound around the ultraviolet lamp 402 so that the wastewater receives more ultraviolet radiation as it passes through the quartz tube 403, and the quartz tube 403 has an inlet 404 and an outlet 405. To further improve the utilization rate of ultraviolet light and the sterilization effect, a reflective layer is provided on the inner wall of the housing 401 to reflect ultraviolet radiation onto the quartz tube 403. A temperature control unit 5 is connected to the ultraviolet sterilizer 4 and is electrically connected to the remote control module to ensure that the temperature of the wastewater is suitable for the growth of target microalgae. The temperature control unit 5 includes: a cabinet 501, on which an inlet 504 and an outlet 505 are provided, the inlet 504 being connected to the outlet 405; a variable frequency pump 502, installed inside the cabinet 501, and electrically connected to a remote control module; and an electric heating tank 503, installed inside the cabinet 501, and connected to the variable frequency pump 502; both the variable frequency pump 502 and the electric heating tank 503 are electrically connected to the battery 6; the remote control module sends a variable frequency command signal to the variable frequency pump 502 based on the temperature signal transmitted from the temperature sensor 10. The operating frequency of the variable frequency pump 502 is adjusted to achieve the purpose of wastewater temperature control. For example, when the water temperature in the microalgae cultivation reactor 9 is higher than the preset temperature, the remote control module sends a command to the variable frequency pump 502 to increase the operating frequency, so that the wastewater in the system flows faster and mixes quickly with the wastewater in the electric heating tank 503 to achieve the purpose of cooling. If the optimal temperature for microalgae growth is about 20°C, when the water temperature in the microalgae cultivation reactor 9 is lower than the preset temperature, the remote control module sends a command to the variable frequency pump 502 to decrease the operating frequency, so that the wastewater in the system flows slower and mixes with the wastewater in the electric heating tank 503 to achieve the purpose of heating.

[0069] A microalgae cultivation module is located directly below the electric shade net 7 and connected to the wastewater storage and transportation module. This microalgae cultivation module is used for cultivating target microalgae. Specifically, the microalgae cultivation module includes:

[0070] A microalgae cultivation reactor 9 is connected to outlet 505 of cabinet 501, and an aerator is installed inside the reactor 9. A carbon dioxide storage tank 11 is connected to the aerator via a pipe. The carbon dioxide storage tank 11 stores carbon dioxide and injects it in the form of bubbles into the microalgae suspension inside the reactor 9 through the aerator, providing sufficient carbon source for the photosynthesis of microalgae cells. A temperature and light sensor 10 is installed on the reactor 9 to detect the temperature of the water inside the reactor 9 and the light intensity irradiating the target microalgae, and sends these signals to the remote control module. Based on the light intensity signal transmitted from the temperature and light sensor 10, the remote control module sends a command to the electric shade net 7 to expand or contract the shade net. For example, the optimal light intensity range for Chlorella growth is 5500~7000 lux. When the light intensity exceeds the set threshold, the remote control module will send an automatic deployment command to the electric shading system installed above the microalgae cultivation reactor 9, and the system will automatically deploy with the support of the battery 6, moderately reducing the entry of direct sunlight and preventing excessive light from affecting the normal growth of microalgae. Conversely, when the light intensity is below the threshold, the remote control module will send an automatic retraction command to the electric shading system installed above the microalgae cultivation reactor 9, and the shading system will automatically retract with the support of the battery 6, increasing the system's reception of natural light and providing more sufficient light for the microalgae to improve its photosynthetic efficiency.

[0071] In a preferred embodiment, the microalgae cultivation module further includes a carbon dioxide separation device 8, which is located between the carbon dioxide storage tank 11 and the biomass power plant. The carbon dioxide separation device 8 is used to filter and cool the CO2 flue gas generated by the biomass power plant and then transport it to the carbon dioxide storage tank 11 for use in the cultivation of target microalgae, while reducing the emission of CO2 flue gas from the biomass power plant. Specifically, the carbon dioxide separation device 8 includes: a main body 801, with a flue gas inlet 802 and a carbon dioxide outlet 803 at its two ends. The flue gas inlet 802 is connected to the flue gas purification process outlet 505 of the biomass power plant, and the carbon dioxide outlet 803 is connected to the carbon dioxide storage tank 11. A water-cooled jacket 804 and a filter chamber 805 are also provided on the main body 801. A coolant inlet 806 and a coolant outlet 807 are also provided on the main body 801. Coolant is introduced into the water-cooled jacket 804 to cool the flue gas entering the filter chamber 805. An activated carbon packing layer 808 is disposed in the filter chamber 805 near the carbon dioxide outlet 803. A separating fiber membrane 811 is disposed on the side of the material layer 808 near the filter chamber 805; a primary filter fiber membrane 809 is disposed within the filter chamber 805; a secondary filter fiber membrane 810 is connected to the activated carbon packing layer 808; an airflow channel is formed between the primary filter fiber membrane 809 and the secondary filter fiber membrane 810, and is connected to the airflow channel outlet 812 disposed on the body 801; the primary filter fiber membrane 809, the secondary filter fiber membrane 810, and the separating fiber membrane 811 in this article are all made of modified polyimide hollow fiber membrane, and the pore size of the secondary fiber membrane is smaller than that of the separating fiber membrane 811, and the pore size of the separating fiber membrane 811 is smaller than that of the primary fiber membrane. The flue gas from the biomass power plant enters through flue gas inlet 802 and first undergoes preliminary filtration through the primary filter fiber membrane 809, followed by secondary filter fiber membrane 810 to separate carbon dioxide. The carbon dioxide then passes through the isolation fiber membrane 811 into the activated carbon packing layer for adsorption and drying, before being discharged through the carbon dioxide outlet 803. The remaining flue gas mixture is discharged through the airflow channel outlet 812. To further improve the heat exchange efficiency of the water-cooled jacket 804, a spiral guide plate 813 is installed inside the water-cooled jacket 804.

[0072] The remote control module is existing technology and consists of a circuit board, a microprocessor, etc. The wastewater storage and transportation tank 2 is electrically connected to the drive motor of the electric shade net 7, the frequency converter pump 502 of the wastewater storage and transportation module, and the temperature and light sensor 10 of the microalgae cultivation module.

[0073] In this system, valves 3 are installed on the pipes between the sewage storage tank 2 and the ultraviolet sterilizer 4, the pipes between the ultraviolet sterilizer 4 and the temperature control unit 5, and the pipes between the temperature control unit 5 and the microalgae culture reactor 9, so that the pipe passage can be closed in time when a certain device in the system needs maintenance.

[0074] The operation process of this algae-photosynthetic microalgae cultivation system is as follows:

[0075] I. Wastewater containing inorganic nutrients in the leachate treatment equipment of biomass power plants first enters the wastewater storage tank 2 under the action of pumps, and then passes through the ultraviolet sterilizer 4 for disinfection through pipelines, and then enters the microalgae culture reactor 9 after temperature regulation by the temperature control unit 5, continuously and stably providing the necessary nitrogen and phosphorus nutrients for the photosynthesis of microalgae cells.

[0076] II. The aerator in the microalgae culture module injects carbon dioxide from the biomass power plant flue gas, which has been treated by the carbon dioxide separation device 8, into the microalgae suspension in the form of bubbles, providing a sufficient carbon source for the photosynthesis of microalgae cells;

[0077] III. The light and temperature sensor 10 is used to monitor the light intensity and water temperature parameters inside the microalgae cultivation reactor 9, and feeds the data back to the remote control module through the control terminal. When the light intensity exceeds the set threshold, the remote control module will issue an automatic deployment command to the electric shading system installed above the microalgae cultivation reactor 9, and the system will automatically deploy with the support of the battery 6 to moderately reduce the entry of direct sunlight and prevent excessive light from affecting the normal growth of microalgae. Conversely, when the light intensity is below the threshold, the remote control module will issue an automatic retraction command to the electric shading system installed above the microalgae cultivation reactor 9, and the shading system will automatically retract with the support of the battery 6 to increase the system's reception of natural light, provide more sufficient light for microalgae, and improve its photosynthetic efficiency.

[0078] IV. When the water temperature in the microalgae cultivation reactor 9 is higher than the preset temperature, the remote control module converts the electrical signal received from the temperature and light sensor 10 into a command signal to the variable frequency pump 502 to increase the flow frequency, thereby accelerating the flow of wastewater in the system and rapidly mixing it with the wastewater in the electric heating tank 503 to achieve the purpose of cooling. When the water temperature in the microalgae cultivation reactor 9 is lower than the preset temperature, the remote control module converts the electrical signal received from the temperature and light sensor 10 into a command signal to the variable frequency pump 502 to decrease the flow frequency, thereby maintaining the optimal temperature range required for microalgae growth.

[0079] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A microalgae cultivation system with algae-photosynthetic complementarity, characterized in that, include: A photovoltaic cell module, comprising an electric shading net, a storage battery, and multiple sets of solar photovoltaic panels, wherein the electric shading net and the multiple sets of solar photovoltaic panels are all electrically connected to the storage battery; The wastewater storage and transportation module is located directly below the electric sunshade net and is electrically connected to the battery. The wastewater storage and transportation module is used for wastewater storage, sterilization and temperature control. The microalgae cultivation module is located directly below the electric shade net and is connected to the wastewater storage and transportation module. The microalgae cultivation module is used to cultivate target microalgae. The remote control module is electrically connected to the electric shade net, the sewage storage and transportation module, and the microalgae cultivation module.

2. The algae-photosynthetic microalgae cultivation system as described in claim 1, characterized in that, The wastewater storage and transportation module includes: Wastewater storage and transportation tank, connected to the leachate treatment equipment of a biomass power plant, is used to store wastewater from the leachate treatment equipment to provide nitrogen and phosphorus elements required for the growth of target microalgae; An ultraviolet sterilizer is connected to the wastewater storage tank, and the ultraviolet sterilizer is used to sterilize the wastewater coming out of the wastewater storage tank; A temperature control unit is connected to the ultraviolet sterilizer and is electrically connected to the remote control module to ensure that the temperature of the wastewater is suitable for the growth of the target microalgae.

3. The algae-photosynthetic microalgae cultivation system as described in claim 2, characterized in that, The ultraviolet sterilizer includes: case; An ultraviolet lamp tube extends through the housing and is connected to the housing at both ends; A quartz tube is wound around the ultraviolet lamp tube so that the wastewater receives more ultraviolet radiation as it passes through the quartz tube, and the quartz tube has an inlet and an outlet.

4. The algae-photosynthetic microalgae cultivation system as described in claim 3, characterized in that: The inner wall of the housing is provided with a reflective layer to reflect ultraviolet radiation onto the quartz tube, thereby further improving the utilization rate of ultraviolet light and the sterilization effect.

5. The algae-photosynthetic microalgae cultivation system as described in claim 4, characterized in that: The temperature control unit includes: The cabinet has an inlet and an outlet, with the inlet connected to the outlet. A variable frequency pump is installed inside the cabinet and is electrically connected to the remote control module. An electric heating tank is installed inside the cabinet and is connected to the frequency converter pump; Both the variable frequency pump and the electric heating tank are electrically connected to the storage battery; The variable frequency pump adjusts its operating frequency according to the variable frequency command signal issued by the remote control module, so as to achieve the purpose of sewage temperature regulation.

6. A microalgae cultivation system with algae-photosynthetic interaction as described in claim 1 or 5, characterized in that: The microalgae cultivation module includes: A microalgae culture reactor is connected to the outlet of the cabinet, and an aerator is installed inside the microalgae culture reactor; A carbon dioxide storage tank is connected to the aerator via a pipeline. The carbon dioxide storage tank is used to store carbon dioxide and injects carbon dioxide into the microalgae culture reactor through the aerator in order to provide the necessary carbon source for the cultivation of target microalgae. A temperature and light sensor is installed on the microalgae culture reactor to detect the temperature of the water in the reactor and the light intensity irradiating the target microalgae, and to send the temperature signal and light intensity signal to the remote control module.

7. The algae-photosynthetic microalgae cultivation system as described in claim 6, characterized in that: The microalgae cultivation module also includes a carbon dioxide separation device, which is located between the carbon dioxide storage tank and the biomass power plant. The carbon dioxide separation device is used to filter and cool the CO2 flue gas generated by the biomass power plant and then transport it to the carbon dioxide storage tank for use in the cultivation of target microalgae, while reducing the emission of CO2 flue gas from the biomass power plant.

8. The algae-photosynthetic microalgae cultivation system as described in claim 7, characterized in that, The carbon dioxide separation device includes: The main body is provided with a water-cooling sleeve and a filter chamber, and coolant is introduced into the water-cooling sleeve to cool the flue gas in the filter chamber. An activated carbon packing layer is disposed inside the filter chamber near the carbon dioxide outlet; A primary filter fiber membrane is disposed within the filter chamber; A secondary filtration fiber membrane is connected to the activated carbon packing layer; An airflow channel is formed between the primary filter fiber membrane and the secondary filter fiber membrane, and is connected to the airflow channel outlet provided on the main body; The flue gas first undergoes preliminary filtration through the primary filter fiber membrane, then carbon dioxide is separated through the secondary filter fiber membrane, and then enters the activated carbon packing layer through the isolation fiber membrane for adsorption and drying, before being discharged through the carbon dioxide outlet; the remaining flue gas mixture is discharged through the airflow channel outlet.

9. The algae-photosynthetic microalgae cultivation system as described in claim 8, characterized in that: The water-cooled jacket is equipped with a spiral guide plate to increase the heat exchange efficiency between the coolant and the flue gas.

Images