Closed marine microalgae culture system

Abstract

The invention relates to the field of microalgae culture, in particular to a closed marine microalgae culture system which comprises a greenhouse, a water pool is arranged in the greenhouse, a buoyancy device and a wave making device float in the water pool, a photosynthesis device is arranged on the buoyancy device and is in an upward convex shape, and the photosynthesis device comprises a transparent outer shell and a transparent inner shell. A photosynthesis cavity is formed between the transparent outer shell and the transparent inner shell, an exhaust valve is arranged at the top of the transparent outer shell and communicated with the photosynthesis cavity, the bottoms of the transparent outer shell and the transparent inner shell are both connected with the annular bottom shell in a sealed mode, and a feeding port and a discharging port are formed in the annular bottom shell. A gas uniformizing component is arranged at the bottom of the photosynthesis cavity. The greenhouse provided by the invention can provide a good environment for marine microalgae culture, and is beneficial to the growth of microalgae; meanwhile, the light receiving area of the photoreactor is large, and algae are not easily adsorbed on the container wall; the photoreactor floats in the water tank, so that stirring of a culture solution in the photoreactor is facilitated.

Description

Technical Field

[0001] The invention relates to the field of microalgae cultivation, and in particular to a closed marine microalgae cultivation system. Background Art

[0002] Microalgae can effectively utilize light energy, CO2 and inorganic salts to synthesize proteins, fats, carbohydrates and a variety of high value-added biologically active substances. Health foods, food additives, feed and other chemicals can be produced through microalgae cultivation.

[0003] There are two main ways to cultivate microalgae: open microalgae cultivation system and closed microalgae cultivation system. The open cultivation system is to cultivate microalgae outdoors using natural sunlight, which has the advantages of being easy to expand and low cost. However, the open cultivation system is easily affected by the external environment, such as light intensity, light duration, temperature and weather; it is also easily contaminated by other algae species, bacteria and pathogenic microorganisms. The closed microalgae cultivation system refers to the cultivation of microalgae in a closed container using culture medium. At present, the closed microalgae cultivation system is mainly a tubular photosynthesizer; after long-term cultivation of algae in the tubular photosynthesizer, the algae will adhere to the inner wall of the tube, significantly reducing the amount of light transmitted by the tube. Summary of the invention

[0004] Based on the above problems, the purpose of the present invention is to provide a closed marine microalgae cultivation system, and the present invention adopts the following technical solutions:

[0005] The present invention provides a closed marine microalgae cultivation system, comprising:

[0006] A greenhouse shed, wherein a water pool is provided in the greenhouse shed;

[0007] A wave-making device, wherein the wave-making device is arranged in the pool;

[0008] A buoyancy device, wherein the buoyancy device floats in the water pool; the number of the buoyancy devices is multiple, and adjacent buoyancy devices and the buoyancy device and the water pool are connected by connecting ropes;

[0009] A photosynthesizer, which is arranged on the buoyancy device, and is in an upward convex shape. The photosynthesizer includes a transparent outer shell and a transparent inner shell, and a photosynthesis chamber is formed between the transparent outer shell and the transparent inner shell. An exhaust valve is provided on the top of the transparent outer shell, and the exhaust valve is connected to the photosynthesis chamber. The bottoms of the transparent outer shell and the transparent inner shell are both sealed with an annular bottom shell, and a feed inlet and a discharge outlet are provided on the annular bottom shell.

[0010] The gas-uniform component is arranged at the bottom of the photosynthesis chamber, and is provided with a plurality of gas outlets. The gas-uniform component is connected to the gas supply device through an airway.

[0011] Preferably, the top of the greenhouse is provided with an openable ventilation window.

[0012] Preferably, the wave-making device comprises a wave board arranged in the water pool, main traction ropes are arranged on both sides of the wave board, and the main traction ropes are connected to a winch arranged at the end of the water pool after passing through a guide wheel group.

[0013] Preferably, a plurality of auxiliary traction ropes are respectively arranged on both sides of the wave plate, and the auxiliary traction ropes on the same side are all connected to the main traction ropes corresponding to the same side.

[0014] Preferably, the buoyancy device comprises an annular buoyancy plate, and a plurality of buoyancy barrels are arranged at intervals in an annular manner around the annular buoyancy plate.

[0015] Preferably, a plurality of rope rings are provided on the edge of the annular buoyancy plate, and the rope rings are connected to the connecting ropes.

[0016] Preferably, an auxiliary light source is provided in the middle of the annular buoyancy plate, and the auxiliary light source is connected to the annular buoyancy plate through a lamp holder.

[0017] Preferably, the gas uniforming member is an annular circular tube, and a plurality of the gas outlet holes are arranged on the outer wall of the annular circular tube.

[0018] Preferably, the transparent outer shell and the transparent inner shell are both hemispherical.

[0019] Preferably, the water pool is connected to a temperature control device; the temperature control device comprises a circulation pipeline connected to the water pool, and a circulation pump and a solar water heater are arranged on the circulation pipeline.

[0020] Compared with the prior art, the beneficial technical effects of the present invention are:

[0021] The greenhouse in the present invention can provide a good environment for cultivating marine microalgae, which is beneficial to the growth of microalgae; at the same time, the photoreactor has a large light receiving area, and the algae are not easily adsorbed on the container wall; the photoreactor floats in the water pool, which is beneficial to the stirring of the culture solution in the photoreactor. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention will be further described below in conjunction with the accompanying drawings.

[0023] Figure 1 Schematic diagram of the main structure of the closed marine microalgae cultivation system in this embodiment;

[0024] Figure 2Schematic diagram of the main structure of the photosynthesizer in this embodiment;

[0025] Figure 3 Schematic diagram of the top view of the gas uniforming component in this embodiment;

[0026] Figure 4 Schematic diagram of the structure of the buoyancy device in this embodiment;

[0027] Figure 5 Schematic diagram of the side view of the wave-making device in this embodiment;

[0028] Figure 6 Schematic diagram of the top view of the wave-making device in this embodiment.

[0029] Explanation of the reference numerals: 1. greenhouse shed; 2. pool; 3. wave-making device; 301. wave plate; 302. main traction rope; 303. guide wheel group; 304. winch; 305. auxiliary traction rope; 4. buoyancy device; 401. annular buoyancy plate; 402. buoyancy barrel; 403. rope ring; 5. connecting rope; 6. photosynthesis device; 601. transparent outer shell; 602. transparent inner shell; 603. photosynthesis chamber; 604. exhaust valve; 605. annular bottom shell; 606. feed port; 607. discharge port; 7. air-uniform component; 701. air outlet; 8. auxiliary light source; 801. lamp holder; 9. temperature control device; 901. circulation pipeline; 902. circulation pump; 903. solar water heater. DETAILED DESCRIPTION

[0030] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0031] like Figure 1 As shown, this embodiment discloses a closed marine microalgae cultivation system, including a greenhouse 1, which provides a suitable environmental temperature for the cultivation of microalgae, especially in winter, and can effectively ensure the growth of microalgae. The top of the greenhouse 1 is provided with an openable ventilation window 101 and a sunshade, so that the temperature of the greenhouse 1 can be prevented from being too high in summer, thereby increasing the area receiving light.

[0032] A water pool 2 is provided in the greenhouse shed 1, and a plurality of buoyancy devices 4 are provided in the water pool 2. The buoyancy devices 4 float in the water pool 2; adjacent buoyancy devices 4 and the buoyancy devices 4 and the water pool 2 are connected by connecting ropes 5; and a photosynthesizer 6 is provided on the top of each buoyancy device 4.

[0033] A wave-making device 3 is provided in the pool 2, and the waves of the water in the pool 2 can be used to shake the photosynthesizer 6, thereby stirring the culture solution in the photosynthesizer 6. In addition, the evaporation of water in the pool 2 can cool the photosynthesizer 6 in summer.

[0034] like Figure 2 and 3 As shown. The photosynthesizer 6 is in an upward convex shape as a whole, and includes a transparent outer shell 601 and a transparent inner shell 602. A photosynthesis chamber 603 is provided between the transparent outer shell 601 and the transparent inner shell 602. The photosynthesis chamber 603 is filled with culture solution. The bottoms of the transparent outer shell 601 and the transparent inner shell 602 are both sealedly connected to an annular bottom shell 605. The annular bottom shell 605 is provided with a feed port 606 and a discharge port 607. The feed port 606 is connected to a culture solution feeder through a pipeline, and the discharge port 607 is connected to a microalgae collection separator through a pipeline.

[0035] An exhaust valve 604 is provided on the top of the transparent outer shell 601, and the exhaust valve 604 is connected to the photosynthesis chamber 603. Microalgae will produce oxygen during photosynthesis. When the amount of oxygen accumulated in the photosynthesizer 6 reaches the set value of the exhaust valve 604, the exhaust valve 604 will discharge the oxygen in the photosynthesizer 6 to prevent excessive dissolved oxygen from causing serious oxidative damage to algae cells. In this embodiment, the transparent outer shell 601 and the transparent inner shell 602 are both hemispherical.

[0036] The bottom of the photosynthesis chamber 603 is provided with a uniform gas component 7, and a plurality of air outlets 701 are provided on the uniform gas component 7. The uniform gas component 7 is connected to the gas supply device through the air channel. The gas supply device can inject carbon dioxide gas into the photosynthesis chamber 603 through the air outlets 701 of the uniform gas component 7, thereby forming bubbles in the culture solution, and the bubbles will float along the inner wall of the transparent shell 601 above the air outlets 701, thereby adhering to and carrying the algae cells just covered on the inner wall of the transparent shell 601 to the liquid surface of the culture solution. The liquid surface generates eddy currents and diffusion waves under the action of the rotation of the bubbles and the transparent shell 601, thereby making the algae cells adhered by the bubbles stay away from the inner wall of the transparent shell 601. In this embodiment, the uniform gas component 7 is an annular circular tube, and a plurality of air outlets 701 are provided on the outer wall of the annular circular tube.

[0037] like Figure 4 As shown, the buoyancy device 4 includes an annular buoyancy plate 401, and a plurality of buoyancy barrels 402 are arranged in an annular manner around the annular buoyancy plate 401. A plurality of rope rings 403 are arranged on the edge of the annular buoyancy plate 401, and the rope rings 403 are connected to the connecting rope 5.

[0038] In this embodiment, an auxiliary light source 8 is disposed in the middle of the annular buoyancy plate 401, and the auxiliary light source 8 is connected to the annular buoyancy plate 401 through a lamp holder 801. The auxiliary light source 8 can illuminate the photosynthesizer 6 to promote the growth of microalgae in the photosynthesizer 6.

[0039] like Figure 5 and 6 As shown, in this embodiment, the wave-making device 3 includes a wave board 301 disposed in the pool 2, and main traction ropes 302 are disposed on both sides of the wave board 301. The main traction ropes 302 are connected to a winch 304 disposed at the end of the pool 2 after passing through a guide wheel group 303. The winch 304 at one end is wound up, and the winch 304 at the other end is released. The two winches 304 cooperate with each other to drive the wave board 301 to move in the lower part of the pool 2. The wave board 301 will generate surges during the movement process, and the surges will drive the buoyancy device 4 to sway and shake.

[0040] In this embodiment, a plurality of auxiliary traction ropes 305 are respectively disposed on both sides of the wave plate 301 , and the auxiliary traction ropes 305 on the same side are all connected to the corresponding main traction ropes 302 on the same side.

[0041] In this embodiment, the water pool 2 is connected to the temperature control device 9; the temperature control device 9 includes a circulation pipe 901 connected to the water pool 2, and a circulation pump 902 and a solar water heater 903 are arranged on the circulation pipe 901. In winter, the solar water heater 903 can be used to heat the water in the water pool 2 to provide a suitable environmental temperature for the cultivation of microalgae.

[0042] The embodiments described above are only descriptions of the preferred modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. A closed marine microalgae cultivation system, characterized in that: include: A greenhouse (1), wherein a water pool (2) is arranged in the greenhouse (1); A wave-making device (3), wherein the wave-making device (3) is arranged in the pool (2); A buoyancy device (4), wherein the buoyancy device (4) floats in the water pool (2); there are a plurality of buoyancy devices (4), and adjacent buoyancy devices (4) and the buoyancy devices (4) and the water pool (2) are connected via a connecting rope (5); A photosynthesizer (6), wherein the photosynthesizer (6) is arranged on the buoyancy device (4), and the photosynthesizer (6) is in an upward convex shape. The photosynthesizer (6) comprises a transparent outer shell (601) and a transparent inner shell (602), and a photosynthesis chamber (603) is provided between the transparent outer shell (601) and the transparent inner shell (602). An exhaust valve (604) is provided at the top of the transparent outer shell (601), and the exhaust valve (604) is communicated with the photosynthesis chamber (603). The bottoms of the transparent outer shell (601) and the transparent inner shell (602) are both sealedly connected to an annular bottom shell (605), and the annular bottom shell (605) is provided with a feed inlet (606) and a discharge outlet (607). An air-leveling component (7), the air-leveling component (7) is arranged at the bottom of the photosynthesis chamber (603), a plurality of air outlet holes (701) are arranged on the air-leveling component (7), and the air-leveling component (7) is connected to the air supply device through an air channel.

2. The closed marine microalgae cultivation system according to claim 1, characterized in that: The top of the greenhouse shed (1) is provided with an openable ventilation window (101).

3. The closed marine microalgae cultivation system according to claim 1, characterized in that: The wave-making device (3) comprises a wave plate (301) arranged in the water pool (2), main traction ropes (302) are arranged on both sides of the wave plate (301), and the main traction ropes (302) are connected to a winch (304) arranged at the end of the water pool (2) after passing through a guide wheel group (303).

4. The closed marine microalgae cultivation system according to claim 3, characterized in that: A plurality of auxiliary traction ropes (305) are respectively arranged on both sides of the wave plate (301), and the auxiliary traction ropes (305) located on the same side are all connected to the main traction ropes (302) corresponding to the same side.

5. The closed marine microalgae cultivation system according to claim 1, characterized in that: The buoyancy device (4) comprises an annular buoyancy plate (401), and a plurality of buoyancy barrels (402) are arranged in an annular manner at intervals around the annular buoyancy plate (401).

6. The closed marine microalgae cultivation system according to claim 5, characterized in that: The edge of the annular buoyancy plate (401) is provided with a plurality of rope rings (403), and the rope rings (403) are connected to the connecting rope (5).

7. The closed marine microalgae cultivation system according to claim 5, characterized in that: An auxiliary light source (8) is arranged in the middle of the annular buoyancy plate (401), and the auxiliary light source (8) is connected to the annular buoyancy plate (401) via a lamp holder (801).

8. The closed marine microalgae cultivation system according to claim 1, characterized in that: The gas homogenizing member (7) is an annular circular tube, and a plurality of gas outlet holes (701) are arranged on the outer wall of the annular circular tube.

9. The closed marine microalgae cultivation system according to claim 1, characterized in that: The transparent outer shell (601) and the transparent inner shell (602) are both hemispherical.

10. The closed marine microalgae cultivation system according to claim 1, characterized in that: The water pool (2) is connected to a temperature control device (9); the temperature control device (9) comprises a circulation pipeline (901) connected to the water pool (2), and a circulation pump (902) and a solar water heater (903) are arranged on the circulation pipeline (901).

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