Blue-green algae large-scale culture system

Abstract

The utility model provides a large-scale blue-green algae culture system. The system comprises a culture pond unit, a supernatant storage unit and a blue-green algae liquid storage unit, the culture pond unit is provided with a plurality of blue-green algae culture ponds, each blue-green algae culture pond is provided with a double-drainage mechanism, and the blue-green algae culture ponds are communicated with the supernatant storage unit and the blue-green algae liquid storage unit through the double-drainage mechanisms; the double-drainage mechanism comprises a first pipeline and a second pipeline, a first liquid outlet is formed in the bottom of the blue-green algae culture pond, a second liquid outlet is formed in the position, away from the ground by a selected height, of the pond body, the first pipeline is communicated with the first liquid outlet, and the second pipeline is communicated with the second liquid outlet; the supernate storage unit is provided with a third pipeline and a first liquid conveying mechanism, the third pipeline is communicated with the blue-green algae culture pond, and the liquid conveying mechanism is used for conveying supernate in the supernate storage unit into the blue-green algae culture pond through the third pipeline. The system can realize separation of cyanobacteria liquid and supernate in the culture pond and cyclic utilization of the supernate.

Description

Technical Field

[0001] The utility model belongs to the technical field of cyanobacteria cultivation, and particularly relates to a cyanobacteria large-scale cultivation system. Background Art

[0002] Artificial cyanobacteria crusting and efficient sand fixation technology is an emerging green and environmentally friendly desertification control technology at home and abroad. It uses biological soil crusts to fix the sand surface and resist wind erosion. The main organisms in the biological soil crusts (such as desert native cyanobacteria) are artificially cultivated and inoculated onto the sand surface. Through maintenance and survival, the formation of biological soil crusts on the surface is accelerated, which plays a role in preventing wind and sand and restoring the ecology. It is the forefront and hot spot of research on the restoration of damaged desertified land, and is also one of the important weapons for my country to fight the landmark battle against sand and desertification.

[0003] Producing sufficient desert-dwelling cyanobacteria through large-scale cultivation (liquid culture in culture tanks) is a crucial prerequisite and guarantee for the widespread application of this technology. Large-scale culture tanks for desert-dwelling cyanobacteria are essential for their cultivation. However, currently used culture tanks have limited effective culture capacity, with effective culture volumes never exceeding 100 tons. These tanks are often constructed of concrete, resulting in long construction cycles, high construction requirements, and high maintenance costs. Furthermore, cyanobacteria are almost always harvested manually, increasing labor costs and ultimately impacting production efficiency. Furthermore, the cyanobacteria culture fluid is directly discharged after a single use, resulting in wasted water resources. Therefore, there is an urgent need to develop a large-capacity, prefabricated culture system for desert-dwelling cyanobacteria that can automatically harvest cyanobacteria and recycle the culture fluid. This will lay the foundation for the large-scale deployment of artificial biological soil crust sand fixation technology. Summary of the Invention

[0004] To solve all or part of the above technical problems, the present invention provides a large-scale cyanobacteria cultivation system, comprising a cultivation tank unit, a supernatant storage unit, and a cyanobacteria liquid storage unit. The cultivation tank unit is provided with a plurality of cyanobacteria cultivation tanks, each of which is provided with a double drainage mechanism. The cyanobacteria cultivation tanks are connected to the supernatant storage unit and the cyanobacteria liquid storage unit through the double drainage mechanism.

[0005] The dual drainage mechanism includes a first pipeline and a second pipeline. A first liquid outlet is provided at the bottom of the cyanobacteria cultivation pool, and a second liquid outlet is provided at a selected height above the ground in the pool body of the cyanobacteria cultivation pool. The first pipeline is connected to the first liquid outlet, and the second pipeline is connected to the second liquid outlet.

[0006] The supernatant storage unit is provided with a third pipeline and a first liquid conveying mechanism, the third pipeline is connected to the cyanobacteria cultivation tank, and the liquid conveying mechanism is used to convey the supernatant stored in the supernatant storage unit to the cyanobacteria cultivation tank through the third pipeline.

[0007] The cyanobacteria liquid produced by culturing cyanobacteria and the culture medium required for culturing cyanobacteria often stratify during standing, with the cyanobacteria liquid located at the bottom and the culture medium located at the top, forming a supernatant. Traditional culturing methods typically involve manual separation of the cyanobacteria liquid and the supernatant, and the supernatant is directly discarded, resulting in a certain amount of resource waste. The large-scale cyanobacteria cultivation system described herein can achieve separation of the supernatant and the cyanobacteria liquid in the cyanobacteria cultivation tank through a dual drainage mechanism. That is, by utilizing the stratification phenomenon of the cyanobacteria liquid and the supernatant, the utility model provides a first liquid outlet at the bottom of the cultivation tank and connects it to a first pipeline, allowing the cyanobacteria liquid to enter the cyanobacteria liquid storage unit through the first pipeline for storage, while the supernatant can enter the supernatant storage unit through a second liquid outlet and a second pipeline, achieving automatic separation of the cyanobacteria liquid and the supernatant. Furthermore, the system can also achieve the recycling of the supernatant. That is, the supernatant stored in the supernatant storage unit is driven by the first liquid delivery mechanism and transported to the cyanobacteria cultivation tank through a third pipeline for culturing cyanobacteria.

[0008] The first liquid delivery mechanism may be any mechanism capable of achieving liquid drive, such as a pipeline pump or other mechanisms with equivalent functions.

[0009] In some embodiments, the second liquid outlet is opened in the cyanobacteria cultivation tank at a position 5-15 cm above the ground.

[0010] In some embodiments, each of the cyanobacteria cultivation tanks is provided with a water supply mechanism, the water supply mechanism including a water supply pipeline, the water supply pipeline being connected to the third pipeline. The supernatant in the supernatant storage unit can be transported to the cyanobacteria cultivation tank through the third pipeline and the water supply pipeline.

[0011] It should be understood that the supernatant in the supernatant storage unit is not the only source of culture fluid. For example, when starting the first culture cycle, culture fluid usually needs to be added from outside the system. Therefore, the water supply pipeline can also be connected to a culture fluid supply mechanism. The culture fluid supply mechanism is used to transport pre-prepared culture fluid into the cyanobacteria culture tank, or to transport raw materials required for preparing culture fluid into the cyanobacteria culture tank, so that various raw materials are mixed in the culture tank to form culture fluid.

[0012] In some embodiments, each of the cyanobacteria cultivation ponds is provided with a disturbance mechanism that disturbs the water in the cultivation pond, allowing the desert native cyanobacteria to be exposed to sufficient light and air to ensure their growth, thereby increasing the yield of the desert native cyanobacteria in large-scale cultivation.

[0013] In some embodiments, the disturbance mechanism includes a first water pipe, a second water pipe and a second liquid conveying mechanism, one end of the first water pipe is connected to the second liquid conveying mechanism, and the other end is connected to the second water pipe, and the first water pipe and the second water pipe are perpendicular to each other; the end of the second water pipe is closed, and a plurality of water outlets are provided on the pipe body of the second water pipe.

[0014] In some embodiments, the second water pipe is provided with multiple water discharge units circumferentially along its body. Each water discharge unit has multiple water outlets spaced equidistantly along the extension of the pipe body, and the angle between the water outlets and the axial direction of the second water pipe is 45° to 60°. The disturbance mechanism can achieve omnidirectional and comprehensive disturbance of the culture tank water, increasing the disturbance range by 4-6 times.

[0015] In some embodiments, the multiple cyanobacteria cultivation tanks in the cultivation tank unit are arranged in a linear manner or in a matrix manner.

[0016] In some embodiments, the cyanobacteria cultivation pond is a canvas pond.

[0017] In some embodiments, the supernatant storage unit includes one or more supernatant storage tanks, and the supernatant storage tanks are canvas tanks.

[0018] The use of canvas pools as cyanobacteria cultivation pools and supernatant storage pools has the advantages of being easy to disassemble, fold, and install. That is, the use of prefabricated components allows for on-site assembly, making it easier to transport materials.

[0019] In some embodiments, the large-scale cyanobacteria cultivation system further includes a greenhouse, the culture tank unit and the supernatant storage unit are arranged inside the greenhouse, the cyanobacteria liquid storage unit is arranged inside or outside the greenhouse, and a light-transmitting structure is provided on the top of the greenhouse.

[0020] In a typical embodiment, the main body of the greenhouse is composed of a steel frame structure, and a plastic film with a light transmittance greater than 90% is covered on the top of the steel frame structure to form the light-transmitting structure.

[0021] In some embodiments, the greenhouse is further provided with a sunshade structure.

[0022] In some embodiments, the sunshade structure includes a sunshade net and a film roller. The sunshade net is installed on the top of the greenhouse. The film roller is connected to the sunshade net to adjust the transmittance of the light-transmitting structure by rolling up the sunshade net.

[0023] In some embodiments, a temperature sensing mechanism is provided inside the greenhouse for detecting the temperature inside the greenhouse.

[0024] In some embodiments, a temperature control mechanism is provided inside the greenhouse to maintain a constant temperature inside the greenhouse.

[0025] Compared with the prior art, the present invention has at least the following beneficial effects: the large-scale cyanobacteria cultivation system provided by the present invention can realize the separation and automatic collection of cyanobacteria liquid and supernatant in the cyanobacteria cultivation pool; and the system can also realize the recycling of cyanobacteria supernatant, improve resource utilization, and minimize the cost of cyanobacteria cultivation. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments recorded in this application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0027] Figure 1 This is a schematic diagram of the arrangement of the culture tank unit, the supernatant storage unit, and the cyanobacteria liquid storage unit in one embodiment of the present invention;

[0028] Figure 2 This is a side view of a cyanobacteria cultivation pool in an embodiment of the present invention;

[0029] 1-culture tank unit, 101-cyanobacteria culture tank, 2-supernatant storage unit, 201-supernatant storage tank, 3-cyanobacteria liquid storage unit, 401-first pipeline, 402-second pipeline, 5-water supply pipe. DETAILED DESCRIPTION

[0030] The technical solutions of the present invention are described in detail below in conjunction with specific embodiments so that those skilled in the art can better understand and implement the technical solutions of the present invention. The specific functional details disclosed herein should not be interpreted as limiting, but rather as a basis for the claims and as a representative basis for teaching those skilled in the art to employ the present invention in various ways in virtually any appropriate detailed embodiment.

[0031] In a typical embodiment of the present invention, a large-scale cultivation system of cyanobacteria is provided, such as Figure 1 As shown, it includes a culture tank unit 1, a supernatant storage unit 2 and a cyanobacteria liquid storage unit 3. The culture tank unit 1 is provided with a plurality of cyanobacteria culture tanks 101 arranged in sequence. Each cyanobacteria culture tank is provided with a double drainage mechanism. The cyanobacteria culture tank 101 is connected to the supernatant storage unit 2 and the cyanobacteria liquid storage unit 3 through the double drainage mechanism. Figure 2As shown, the double drainage mechanism includes a first pipeline 401 and a second pipeline 402. A first liquid outlet is opened at the bottom of the cyanobacteria culture tank 101, and a second liquid outlet is opened at a selected height from the ground in the tank body of the cyanobacteria culture tank. The first pipeline 401 is connected to the first liquid outlet, and the second pipeline 402 is connected to the second liquid outlet. The supernatant storage unit of this embodiment includes multiple supernatant storage tanks 201, and the supernatant storage tanks 201 are connected to the third pipeline. The supernatant storage tanks 201 are provided with a first liquid conveying mechanism. The first liquid conveying mechanism is used to convey the supernatant stored in the supernatant storage tank 201 to the cyanobacteria culture tank 101 through the third pipeline to achieve the recycling of the supernatant.

[0032] The second liquid outlet is usually opened 5 to 15 cm from the ground, but can be adjusted according to actual conditions.

[0033] In this embodiment, the culture tank unit 1 includes 12 cyanobacteria culture tanks 101, and the supernatant storage unit 2 includes two supernatant storage tanks 201. The supernatant storage unit 2 is located at one end of the culture tank unit 1. The 12 cyanobacteria culture tanks 101 and the two supernatant storage tanks 201 are arranged in a linear manner. Of course, it should be understood that the specific number of cyanobacteria culture tanks 101 and supernatant storage tanks 201, the relative positions of the cyanobacteria culture tanks and supernatant storage tanks, and the arrangement can be flexibly adjusted according to specific needs, site area, etc.

[0034] In this embodiment, the cyanobacteria cultivation pool 101 and the supernatant storage pool 201 are both canvas pools. The diameter of each canvas pool is 10 meters and the height is 1.1 meters. The area of ​​a single canvas pool is 79 m 2 , with a capacity of about 85 tons, an effective culture capacity of 40 tons, and a total effective production capacity of about 500 tons. That is, the system provided by the utility model can realize large-scale cyanobacteria cultivation, and the use of canvas pools can be assembled on site and is easy to disassemble, which facilitates the subsequent adjustment of the number or arrangement of the cyanobacteria culture pools 101 and the supernatant storage pools 201 according to actual needs.

[0035] The cyanobacteria liquid storage unit 3 in this embodiment includes a cyanobacteria storage tank, which is a cement tank 9 meters long, 9 meters wide, and 3 meters deep, with an effective storage capacity of 100 tons. The number and volume of the cyanobacteria storage tanks can be adjusted according to actual conditions, such as the cultivation scale.

[0036] The culture tank unit 1 also includes a water supply mechanism for supplying the raw materials required for cyanobacteria cultivation to the culture tanks. The water supply mechanism includes a water supply pipe 5 independently provided for each cyanobacteria culture tank 101. The water supply pipe 5 is connected to the third pipeline, so that the supernatant stored in the supernatant storage tank 201 is transported to the cyanobacteria culture tank 101 through the third pipeline and the water supply pipe 5.

[0037] Each cyanobacteria cultivation tank 101 is also provided with a disturbance mechanism for disturbing the water in the cultivation tank, allowing the cyanobacteria to be exposed to sufficient light and air to ensure their growth. The disturbance mechanism used in this embodiment includes a first water pipe, a second water pipe, and a second liquid conveying mechanism. One end of the first water pipe is connected to the second liquid conveying mechanism, and the other end is connected to the second water pipe. The first water pipe and the second water pipe are arranged perpendicular to each other; a plug with a closed end is installed at the end of the second water pipe. A plurality of water outlets are provided on both sides of the pipe body of the second water pipe at equal intervals along the extension direction of the pipe body, and the angle between the water outlets and the axial direction of the second water pipe is 45 degrees. In this embodiment, the distance between adjacent water outlets is 0.5m. The disturbance mechanism is also equipped with a time and space switch to realize automatic start and stop of the disturbance mechanism. This disturbance mechanism can achieve all-round, no-dead-angle disturbance of the water in the culture pond, increasing the disturbance range by 4-6 times, allowing the desert native cyanobacteria to be exposed to sufficient light and air to ensure their growth, thereby increasing the yield of large-scale cultivation of desert native cyanobacteria. In this embodiment, the second liquid delivery mechanism is a liquid pump.

[0038] The system provided in this embodiment includes a greenhouse, wherein the culture tank unit 1 and the supernatant liquid storage unit are disposed inside the greenhouse, and the cyanobacteria liquid storage unit 3 is disposed outside the greenhouse. The main portion of the greenhouse is a steel frame structure, the top of which is covered with a plastic film having a light transmittance greater than 90%, forming a light-transmitting structure; one or more doors are disposed on the side walls of the greenhouse. The greenhouse is also provided with a sunshade structure, which includes a film roller mounted on the greenhouse and a sunshade net connected to the film roller. The sunshade net is covered on the top of the greenhouse and can be rolled up and down by the film roller, thereby adjusting the shading rate and temperature.

[0039] A temperature sensing mechanism may also be provided inside the greenhouse to detect the temperature inside the greenhouse, and a temperature control mechanism may also be provided to adjust the temperature inside the greenhouse.

[0040] The various aspects, embodiments, features and examples of the present invention should be considered as illustrative in all respects and are not intended to limit the present invention, the scope of which is defined solely by the claims. Other embodiments, modifications and uses will be apparent to those skilled in the art without departing from the spirit and scope of the present invention as claimed.

[0041] In addition, the inventor of this case also referred to the aforementioned embodiments and conducted experiments with other raw materials, process operations, and process conditions described in this specification, and obtained relatively ideal results.

[0042] Although the present invention has been described with reference to illustrative embodiments, it will be understood by those skilled in the art that various other changes, omissions, and / or additions may be made without departing from the spirit and scope of the present invention, and that substantial equivalents may be substituted for the elements of the embodiments. Additionally, many modifications may be made to adapt specific circumstances or materials to the teachings of the present invention without departing from the scope of the present invention. Therefore, it is not intended that the present invention be limited to the disclosed specific embodiments for carrying out the present invention, but rather that the present invention will include all embodiments within the scope of the appended claims. Furthermore, unless specifically stated, any use of the terms first, second, etc. does not indicate any order or importance, but rather uses the terms first, second, etc. to distinguish one element from another.

Claims

1. A large-scale cultivation system for cyanobacteria, characterized in that: include: A culture tank unit, a supernatant storage unit, and a cyanobacteria liquid storage unit, wherein the culture tank unit is provided with a plurality of cyanobacteria culture tanks, each of the cyanobacteria culture tanks is provided with a double drainage mechanism, and the cyanobacteria culture tanks are connected to the supernatant storage unit and the cyanobacteria liquid storage unit through the double drainage mechanism; The dual drainage mechanism includes a first pipeline and a second pipeline. A first liquid outlet is provided at the bottom of the cyanobacteria cultivation pool, and a second liquid outlet is provided at a selected height above the ground in the pool body of the cyanobacteria cultivation pool. The first pipeline is connected to the first liquid outlet, and the second pipeline is connected to the second liquid outlet. The supernatant storage unit is provided with a third pipeline and a first liquid conveying mechanism, the third pipeline is connected to the cyanobacteria cultivation tank, and the liquid conveying mechanism is used to convey the supernatant stored in the supernatant storage unit to the cyanobacteria cultivation tank through the third pipeline.

2. The cyanobacteria large-scale cultivation system according to claim 1, characterized in that: The second liquid outlet is provided in the cyanobacteria cultivation pool at a position 5-15 cm above the ground.

3. The cyanobacteria large-scale cultivation system according to claim 1, characterized in that: Each of the cyanobacteria cultivation pools is provided with a water supply mechanism, which includes a water supply pipeline, and the water supply pipeline is connected to the third pipeline.

4. The cyanobacteria large-scale cultivation system according to claim 1, characterized in that: Each of the cyanobacteria cultivation ponds is provided with a disturbance mechanism.

5. The cyanobacteria large-scale cultivation system according to claim 4, characterized in that: The disturbance mechanism includes a first water pipe, a second water pipe and a second liquid conveying mechanism. One end of the first water pipe is connected to the second liquid conveying mechanism, and the other end is connected to the second water pipe, and the first water pipe and the second water pipe are perpendicular to each other; the end of the second water pipe is closed, and a plurality of water outlets are opened on the pipe body of the second water pipe.

6. The cyanobacteria large-scale cultivation system according to claim 5, characterized in that: The second water pipe is provided with multiple water discharge units in the circumferential direction of its pipe body, each water discharge unit has multiple water outlets spaced at equal distances along the extension direction of the pipe body, and the angle between the water outlet and the axial direction of the second water pipe is 45°-60°.

7. The cyanobacteria large-scale cultivation system according to claim 1, characterized in that: The cyanobacteria cultivation pool is a canvas pool; And / or, the supernatant storage unit includes one or more supernatant storage tanks, and the supernatant storage tanks are canvas tanks.

8. The cyanobacteria large-scale cultivation system according to claim 1, characterized in that: It also includes a greenhouse, the culture pool unit and the supernatant storage unit are arranged inside the greenhouse, and the cyanobacteria liquid storage unit is arranged inside or outside the greenhouse; and a light-transmitting structure is provided on the top of the greenhouse.

9. The cyanobacteria large-scale cultivation system according to claim 8, characterized in that: The greenhouse is also provided with a sunshade structure.

10. The cyanobacteria large-scale cultivation system according to claim 9, characterized in that: The sunshade structure includes a sunshade net and a film roller. The sunshade net is installed on the top of the greenhouse. The film roller is connected to the sunshade net to adjust the light transmittance of the light-transmitting structure by rolling up and unrolling the sunshade net.

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