TWI742848B - Microalgae culture system, culture method and product thereof - Google Patents

Abstract

Present invention discloses a microalgae cultivation system, including a photosynthesis reaction unit, a growth adjustment unit, a harvesting unit and an oxygen exhaust device, The photosynthesis reaction unit having a light-transmitting coil, the growth adjustment unit has an adjustment tank, inside of the adjustment tank divided by several dividing plates to formed a curved flow channel, when culture liquid passing through the adjustment tank, the culture liquid cool down and reduce down or stops photosynthesis, the harvesting unit used to collect part of the microalgae in the culture liquid, and the oxygen exhaust device is used to exhaust oxygen in the culture liquid, oxygen exhaust device used to discharged oxygen contained by the culture liquid, and the gas discharged from the oxygen exhaust device and the dead algae are extracted through a exhaust device; the invention also provides Microalgae cultivation method, and microalgae products produced by the method.

Description

Microalgae culture system and its culture method and products

The invention relates to a microalgae culture system and a culture method and products thereof, in particular to a microalgae culture system for cultivating algae microorganisms, and a culture method and products thereof.

Such as cyanobacteria (Spirulina, Spirulina) or Haematococcus (Haematococcus Pluvialis Flotow) and other algae, which are rich in protein, minerals, vitamins and enzymes, antioxidants, astaxanthin and other beneficial human body In recent years, it has been widely recommended for its nutritional content, and it has even been able to extract raw diesel from algae in response to energy use. The culture medium of algae undergoes a photosynthetic reaction system for sufficient photosynthesis to meet the nutrients required by the algae cells, and discharge the oxygen generated in the culture medium, so that the algae can grow and reproduce in large quantities.

The commonly known algae photosynthetic reaction system is an open-air large cultivation pond. The culture solution of algae is contained in the large open-air culture pond for photosynthesis. However, the large cultivation pool not only covers a large area and consumes a lot of energy, but is also subject to weather influences. It is especially vulnerable to pollution and affects the quality of the algae, causing many undesirable problems for the manufacturers.

In order to improve the shortcomings of the open algae cultivation system, some of the existing algae cultivation systems adopt a closed photosynthesis reactor structure. The spiral-shaped photosynthesis reactor allows the algae to photosynthesize in a closed spiral pipe, thus reducing the space occupied by the cultivation system and reducing the chance of algae being polluted. At the same time, the previous proposal is also provided with an oxygen exhaust system and a temperature adjustment device to discharge the oxygen generated in the culture solution and control the temperature of the culture solution.

However, this kind of closed algae cultivation system has photosynthesis and pyrolysis growth of microalgae in a closed pipeline, because the capacity of the spiral reactor is limited, and the equipment cost is much greater than that of an open cultivation pond, so although the algae is produced Good quality, but not in line with the benefit of mass production.

And when the algae is cultivated, when the harvest of the culture solution is completed, the remaining algae in the culture solution may be injured, and because the temperature is too high, or the algae clumps in the tank or pipeline, it will cause the dead algae. Affect the quality of the algae produced.

Due to the above reasons, the existing algae cultivation system has shortcomings. Therefore, how to overcome the above shortcomings through structural design improvements has become one of the important issues to be solved by this enterprise.

The technical problem to be solved by the present invention is to improve the shortcomings that the existing closed microalgae cultivation method is not suitable for mass production and that the dead algae is prone to occur.

In order to solve the above technical problems, one of the technical solutions adopted by the present invention is to provide a microalgae cultivation system, which includes: a photosynthetic reaction unit, the photosynthetic reaction unit has a transparent optical tube, the transparent optical tube It has a water inlet and a water outlet. The culture solution for cultivating microalgae enters the optically permeable tube from the inlet, and after photosynthesis is performed in the optically permeable tube, it passes through the water outlet Discharge; a growth regulating unit, the growth regulating tank has a regulating groove, and a plurality of first partitions and a plurality of second partitions arranged inside the regulating tank, the regulating groove in the longitudinal direction The two ends of can define an inlet end and an outlet end, and a plurality of the first and a plurality of the second partitions are arranged in the growth regulating groove along a longitudinal axis in a manner of staggering and spaced apart from each other. The inside of the growth regulating tank is divided into a curved flow channel connected between the inlet end and the outlet end. The culture fluid flows in the flow channel of the regulating tank and can make it The temperature is gradually lowered, and the regulating tank slows down or stops the photosynthesis of the microalgae in the culture solution by reducing or isolating the light; a harvesting unit connected to the outlet end of the growth regulating unit for performing a harvesting procedure To harvest part of the microalgae in the culture solution; a pressurized conveying device connected to the outlet end of the harvesting unit; an oxygen exhaust device, the oxygen exhaust device has an oxygen exhaust cylinder, and is connected to the oxygen exhaust device The liquid collecting tube at the lower end of the cylinder, the center of the oxygen exhaust tube is provided with an oxygen exhaust tube, the outlet of the oxygen exhaust tube is located at the upper end of the oxygen exhaust tube, and one side of the oxygen exhaust tube has a liquid inlet. The liquid inlet is connected to the pressurized conveying device, the culture liquid is sprayed into the oxygen exhaust cylinder through the liquid inlet, and then flows into the liquid collecting cylinder, and the oxygen contained in the culture liquid passes through the The oxygen exhaust pipe is exhausted from the outside of the oxygen exhaust cylinder; and an air suction device is connected to the outlet of the oxygen exhaust pipe to generate a vacuum suction to discharge the oxygen from the oxygen exhaust pipe and the dead algae in the culture solution Withdraw the oxygen exhaust device; wherein, after the culture solution passes through the photosynthetic reaction unit, the growth regulation unit, the harvesting unit, and the oxygen exhaust device, it re-enters the photosynthetic reaction unit for photosynthesis.

An embodiment of the present invention also provides a method for culturing microalgae, which includes: implementing a photosynthetic reaction procedure to guide the culture solution containing microalgae into a photosynthetic reaction unit, the photosynthetic reaction unit having a transparent optical tube, And the microalgae in the culture medium performs photosynthesis in the transparent disc tube; a growth regulation procedure is implemented to introduce the culture solution discharged after the photosynthesis reaction procedure is completed into a growth regulation unit, so that the culture solution When flowing through the growth regulation unit, the temperature is gradually reduced, and photosynthesis is eased or stopped; a harvesting procedure is implemented to introduce the culture solution after the growth regulation procedure is completed into a harvesting unit to remove part of the culture solution The microalgae is harvested and the density of the microalgae in the culture solution is reduced; an oxygen exhaust procedure is implemented to introduce the microalgae after the harvesting procedure into an oxygen exhaust device to discharge the oxygen in the culture solution.

The embodiment of the present invention also provides a microalgae product produced by the aforementioned microalgae cultivation method.

The beneficial effect of the present invention is that the purpose of improving production efficiency and output can be achieved through the arrangement of the growth regulating unit.

In order to further understand the features and technical content of the present invention, please refer to the following detailed description and drawings about the present invention. However, the provided drawings are only for reference and description, and are not used to limit the present invention.

The following are specific examples to illustrate the implementation of the "microalgae culture system and its culture method and products" disclosed in the present invention. Those skilled in the art can understand the advantages and effects of the present invention from the content disclosed in this specification. The present invention can be implemented or applied through other different specific embodiments, and various details in this specification can also be based on different viewpoints and applications, and various modifications and changes can be made without departing from the concept of the present invention. In addition, the drawings of the present invention are merely schematic illustrations, and are not drawn according to actual dimensions, and are stated in advance. The following embodiments will further describe the related technical content of the present invention in detail, but the disclosed content is not intended to limit the protection scope of the present invention. In addition, the term "or" used in this document may include any one or a combination of more of the associated listed items depending on the actual situation.

Referring to FIGS. 1 to 3, a specific embodiment of the microalgae culture system of the present invention, as shown in FIG. 4, is a flowchart of a specific embodiment of the microalgae culture method of the present invention. It includes: a photosynthetic reaction unit 10, a growth regulation unit 20, a harvesting unit 30, a pressurized conveying device 40, an oxygen exhaust device 50, and an air extraction device 60.

The photosynthetic reaction unit 10 has a transparent optical tube 11, and both ends of the transparent optical tube 11 have a water inlet 101 and a water outlet 102. The permeable disc tube 11 is made of a transparent tube body (for example: glass tube, acrylic tube), and the culture solution for cultivating microalgae can enter the permeable disc tube 11 from the water inlet 101 and pass through at a stable flow rate. The permeable disc tube 11, and the microalgae in the culture solution photosynthesize in the permeable disc tube 11 so that the microalgae obtain nutrients and grow.

In particular, the transparent disk tube 11 of the present invention is a zigzag bent pipe or a spiral tube, so as to increase the effective length of the transparent disk tube 11 and reduce the occupation of the transparent disk tube 11. Space and land area. And the transparent disc tube 11 is arranged in a direction substantially perpendicular to the ground, and the water inlet 101 of the transparent disc tube 11 is arranged at the upper end of the transparent disc tube 11, and the water outlet 102 is arranged at the lower end of the transparent disc tube 11. , So that the culture solution in the translucent disc tube 11 can flow from the water inlet 101 of the translucent disc tube 11 to the water outlet 102 through the action of gravity.

The upper end of the translucent disk tube 11 can also be provided with an auxiliary opening 12, the role of the auxiliary opening 12 is for the operator to add new culture fluid or nutrients required for cultivating algae, or to inject carbon dioxide into the translucent disk tube 11, to supply the gas needed for photosynthesis of microalgae. In addition, the photosynthetic reaction unit 10 can also be provided with a plurality of light source devices 13, which can be dimmable LED light-emitting devices, and can generate light of different wavelengths according to the needs of cultivating microalgae species, so as to enhance the microalgae Photosynthesis. In addition, the photosynthetic reaction unit 10 of the present invention can also be provided with a temperature control device (not shown in the figure). The temperature control device can be a heater, a cooler, or a sprinkler, etc., to control the culture in the photosynthesis reaction unit 10. The temperature of the liquid to create an environment suitable for the growth of microalgae.

The growth regulation unit 20 is connected to the outlet end of the photosynthetic reaction unit 10, enters the growth regulation unit 20 through the culture solution of the photosynthesis reaction unit 10, and can be cooled in the growth regulation unit 20, and is controlled by the culture solution in the growth regulation unit. The flow rate within 20 and the way to reduce or stop photosynthesis make the microalgae in the culture fluid undergo a physiological regulation process in the growth regulation unit 20.

The growth regulating unit 20 has a regulating groove 21, and a plurality of first partitions 22 and second partitions 23 arranged in the regulating groove 21. In this embodiment, the regulating groove 21 is a rectangular groove body. The tank 21 may be a closed tank or an open tank. The two ends of the adjustment tank 21 in the longitudinal direction can define an inlet end 201 and an outlet end 202. The inlet end 201 of the adjustment tank 21 is connected to the water outlet 102 of the photosynthesis reaction unit 10 through a pipeline, and the culture solution can be from the inlet The end 201 enters the regulating groove 21 and then exits from the outlet end 202 of the regulating groove 21.

The plurality of first partitions 22 and the second partitions 23 are arranged in the adjustment groove 21 in a staggered and mutually spaced manner along the longitudinal axis of the adjustment groove 21, and the plurality of first partitions 22 and the plurality of second partitions The two partition plates 23 jointly partition the interior of the regulating groove 21 into a curved flow channel 24. In more detail, in this embodiment, the plurality of first partitions 22 are substantially perpendicular to the longitudinal axis direction of the adjusting groove 21, and one of the opposing sides of the plurality of first partitions 22 is close to One of the side walls inside the regulating groove 21, and the other side of the plurality of first partitions 22 are kept at a distance from the other side wall of the regulating groove 21 or provided with an opening, so as to form a first through which the culture solution can pass. Notch 221. The plurality of second partitions 23 are arranged between every two adjacent first partitions 22, and among the opposing sides of the plurality of second partitions 23, one side of the first notch 221 corresponds to It is close to the inner side wall of the adjusting groove 21, and the other side relative to the first notch portion 221 is spaced from the inner side wall of the adjusting groove 21 or provided with an opening to form a second notch portion 231 through which water can flow. Therefore, through the above arrangement, the space inside the regulating tank 21 is partitioned by a plurality of first partitions 22 and second partitions 23 to form a zigzag-shaped curved flow channel 24 that is repeatedly bent, so that the culture solution is in the regulating tank 21 The flow distance of the culture solution increases, and the flow speed of the culture solution is slowed down, thereby prolonging the residence time of the culture solution in the regulating tank 21.

In particular, the volume of the regulating tank 21 of the growth regulating unit 20 of the present invention is arranged to be greater than the volume of the photosynthetic reaction unit 10, and the residence time of the culture solution in the growth regulating unit 20 is also arranged to be longer than that of the culture solution in the photosynthetic reaction unit 10. The internal residence time, in a preferred embodiment of the present invention, the volume of the regulating tank 21 can be arranged to be several times greater than the volume of the photosynthetic reaction unit 10. After the culture solution enters the regulating tank 21, it can pass through the growth regulating tank 21 at a slow flow rate, and the temperature of the culture solution can be gradually reduced, and the growth regulating unit 20 can reduce the light intensity or isolate the light source. The photosynthesis of the microalgae in the culture solution in the growth regulation unit 20 is slowed down or stopped. When the algae in the culture solution passes through the regulating tank 21, photosynthesis is stopped, so that the algae in the culture solution has sufficient time to digest the nutrients obtained in the previous photosynthetic reaction process, and the algae grow to a certain size and then divide further. , Which makes the algae proliferate. Therefore, the function of the growth regulation unit 20 can be used as a buffer space after the culture solution is discharged from the photosynthetic reaction unit 10, and the growth volume of the algae can be expanded, so that the algae can grow in a larger volume in addition to the growth in the photosynthesis reaction unit 10. The adjustment unit 20 further grows, divides, and reproduces, thereby improving the yield and efficiency of the microalgae culture system of the present invention.

The harvesting unit 30 is connected to the outlet end of the growth regulating unit 20. The outlet end 202 of the growth regulating unit 20 is provided with a water outlet pipe 25. Collect a part of the microalgae in the culture medium. In this embodiment, the harvesting unit 30 has a filter assembly 31 and a culture solution receiving tank 32, and the culture solution can enter the culture solution receiving tank 32 after passing through the filter assembly 31. The filter assembly 31 has pores of appropriate size, so that the microalgae in the culture solution whose size is larger than the pore diameter of the filter assembly 31 can be blocked by the filter assembly 31. Therefore, when the culture solution passes through the filter assembly 31, a part of the culture solution The larger-sized microalgae can be harvested, and the remaining smaller-sized microalgae will enter the culture solution receiving tank 32 as the culture solution passes through the filter assembly 31.

In particular, the harvesting unit 30 of the present invention only harvests a certain proportion of the microalgae in the culture solution during the harvesting process, so that part of the microalgae is retained in the culture solution of the harvesting unit 30, so that the culture solution When recirculating to the photosynthetic reaction unit 10, the microalgae remaining in the culture solution can grow again. In addition, by controlling the concentration of microalgae remaining in the culture solution through the harvesting unit 30, environmental conditions suitable for the growth of microalgae can be created, and the production efficiency of the microalgae culture system of the present invention and the quality of the microalgae produced can be improved.

The harvesting unit 30 of the present invention can achieve the purpose of controlling the harvesting ratio of microalgae by controlling the time ratio of the culture solution passing through the filter assembly 31 or not passing through the filter assembly 31. For example, in the embodiment shown in FIG. The filter assembly 31 of the collecting unit 30 is movable. When the filter assembly 31 is set in the culture solution receiving tank 32, the culture solution will pass through the filter assembly 31 so that the microalgae is harvested. When 31 is moved out of the culture solution receiving tank 32, the culture solution will not pass through the filter assembly 31, so that the microalgae in the culture solution will not be harvested by the filter assembly 31, so it is placed through the control filter assembly 31 The ratio of the time between the time in the culture solution receiving tank 32 and the time when the culture solution is removed outside the culture solution receiving tank 32 can achieve the purpose of controlling the harvest ratio of microalgae in the culture solution.

However, the present invention is not limited to this. The harvesting unit 30 of the present invention can also control the harvesting ratio of microalgae in other ways, for example, by adjusting the size of the pores of the filter assembly 31 to achieve the purpose of controlling the harvesting ratio. In more detail, since the pores of the filter element 31 have a certain size, only microalgae with a size larger than the pores of the filter element will be blocked by the filter element 31. Therefore, the present invention can select a filter element with an appropriate pore size. 31. To achieve the purpose of controlling the harvest ratio.

As shown in FIG. 2, it is another embodiment of the harvesting unit 30a adopted in the present invention. In this embodiment, the filter assembly 31a of the harvesting unit 30a is in the shape of a crawler belt and is set on a conveyor belt device 33a. , The culture solution discharged from the outlet pipe 25 of the regulating tank 21 can flow down from above the filter mesh assembly 31a and pass through the filter mesh assembly 31a. The culture solution receiving groove 32a is provided under the filter mesh assembly 31a for receiving the culture solution of the filter mesh assembly 31a. One end of the filter assembly 31a and the conveyor belt device 33a extends above a harvesting container 34a. The filter assembly 31a can be driven by the conveyor belt device 33a and faces the upper side of the harvesting container 34a. When the aquaculture water continues to pass through the filter assembly At 31a, the filter assembly 31a continues to scroll in the direction of the harvesting container 34a, so that the microalgae collected above the filter assembly 31a is brought to the top of the harvesting container 34a, and as the filter assembly 31a scrolls Fall into the harvest container 34a. Therefore, the harvesting unit 30a of this embodiment can drive the crawler-shaped filter assembly 31a through the conveyor belt device 33a to achieve the goal of continuous and continuous harvesting of microalgae, thereby improving the efficiency of the harvesting process.

The pressurized conveying device 40 is connected to the outlet end of the harvesting unit 30 for conveying the culture solution discharged from the harvesting unit 30 into the oxygen exhaust device 50. The pressurized conveying device 40 is a pressurized pump and pressurizes The conveying device 40 has an inlet pipe 41 connected to the water outlet of the culture solution receiving tank 32 of the harvesting unit 30, and is connected to the oxygen exhaust device 50 through an outlet pipe 42.

The oxygen exhaust device 50 is connected to the outlet pipe 42 of the pressurized conveying device 40, and the culture solution discharged from the harvesting unit 30 is pressurized through the pressurized conveying device 40 and then transported into the oxygen exhaust device 50, and is discharged in the oxygen exhaust device 50. Oxygen program to reduce the oxygen content in the culture medium. In this embodiment, the oxygen exhaust device 50 includes an oxygen exhaust cylinder 51 and a liquid collection tube 52 connected below the oxygen exhaust cylinder 51. Among them, the oxygen exhaust tube 51 is cylindrical, and an oxygen exhaust tube 54 is provided in the center of the oxygen exhaust tube 51, and a hollow tube 55, an oxygen exhaust tube 54 and a hollow tube 55 are set on the outside of the oxygen exhaust tube 54 Passing through the center of the oxygen exhaust tube 51, the openings of the oxygen exhaust tube 54 and the hollow tube 55 are located at the upper end of the oxygen exhaust tube 51, and an expansion part 541 is formed at the bottom of the oxygen exhaust tube 54.

A liquid inlet 53 is provided on one side of the oxygen exhaust cylinder 51, and the liquid inlet 53 is connected to the outlet pipe 42 of the pressure conveying device 40, so that the culture solution can enter the liquid inlet 53 through the outlet pipe 42 and from the inlet The liquid port 53 is input into the oxygen exhaust cylinder 51. And as shown in Fig. 3, in this embodiment, the liquid inlet 53 forms a nozzle, and the central axis of the liquid inlet 53 and the tangent direction of the circumferential section of the oxygen exhaust cylinder 51 are parallel, or have an included angle less than 90 degrees, Therefore, the flow rate of the culture solution increases when passing through the liquid inlet 53 and enters the oxygen cylinder 51 in a spray or spray state, and because the liquid inlet 53 enters along the tangent or inclined direction of the cross section of the oxygen cylinder 51 In the oxygen exhaust cylinder 51, the culture liquid sprayed into the oxygen exhaust cylinder 51 through the liquid inlet 53 is easy to form a vortex.

After the culture fluid is sprayed into the oxygen exhaust cylinder 51, the oxygen and other gases contained in the culture fluid can flow out of the oxygen exhaust pipe 54 to the outside of the oxygen exhaust cylinder 51, and the liquid will flow into the oxygen exhaust cylinder due to gravity. 51 below the liquid collection tube 52. The oxygen exhaust tube 54 and the opening at the upper end of the hollow tube 55 are connected to the air extraction device 60 to generate a vacuum suction force to extract the exhaust gas from the oxygen exhaust tube 54. In this embodiment, the air extraction device 60 has a blower 61, a suction pipe 62 and an exhaust pipe 63 connected to both ends of the blower 61, and one end of the exhaust pipe 63 is connected to the exhaust pipe 54 and the hollow pipe 55. The outlet of the exhaust pipe 63 is connected to a collection container 64. The function of the air extraction device 60 is to extract oxygen from the oxygen exhaust cylinder 51 on the one hand, and to extract the dead algae in the culture solution from the oxygen exhaust cylinder 51 on the other hand. During the process of microalgae cultivation, a part of the microalgae will die, and the dead microalgae has a lighter specific gravity. Therefore, when the gas extraction device 60 extracts the gas inside the oxygen exhaust cylinder 51, the dead algae in the culture solution will also follow. The air flow is drawn out and discharged from the exhaust pipe 63 into the collection container 64.

Therefore, the amount of dead algae in the culture solution can be reduced by the oxygen exhaust cylinder 51 and the air extraction device 60, and the dead algae can be prevented from sticking to the pipeline or the flow channel of the regulating tank 21 and causing blockage, and the produced algae products are not There will be a foul smell produced by dead algae, and the product will have the aromatic odor of natural algae, thereby achieving the purpose of improving product quality.

The liquid collecting cylinder 52 is connected to the bottom of the oxygen exhaust cylinder 51 to contain the culture liquid flowing down from the oxygen exhaust cylinder 51. A side exhaust port 521 is provided on one side of the upper end of the liquid collecting cylinder 52. The side exhaust port 521 can not only be used for exhaust, but also can be used for the operator to supplement or add culture solution. The bottom of the liquid collecting tube 52 is connected to the bottom of the buffer tank 56 through a connecting pipe 57 to allow the culture solution in the liquid collecting tube 52 to flow into the buffer tank 56 through the connecting tube 57. The buffer tank 56 functions as the culture solution enters the buffer space of the photosynthetic reaction unit 10. The culture solution flowing out of the oxygen exhaust device 50 enters the buffer tank 56 first, and then enters the photosynthetic reaction unit 10 from the buffer tank 56 to make the culture solution Of microalgae resume photosynthesis. In particular, the microalgae culture system of the present invention can not only inject new culture solution through the auxiliary opening 12 at the upper end of the permeable disc tube 11, but also inject or add new culture solution from the side exhaust port 521 of the liquid collecting cylinder 52. Or add new culture solution from the harvesting unit 30.

As shown in Fig. 4, it is a method flow chart of the microalgae cultivation method of the present invention. The microalgae culture method of the present invention is to use the aforementioned microalgae culture system 1 to cultivate, propagate and harvest microalgae. The method of the present invention generally includes:

Step 1: Implement a photosynthetic reaction process to guide the culture medium containing microalgae into the photosynthetic reaction unit 10 for photosynthesis. The photosynthetic reaction unit 10 has a closed transparent optical tube 11, microalgae and The culture solution absorbs light in the transparent disc tube 11 to perform photosynthesis. Moreover, in a preferred embodiment of the present invention, light can be irradiated to the transparent optical tube 11 through the light source device 13 to provide the light required for photosynthesis of the microalgae.

Step 2: Implement a growth regulation procedure to introduce the culture solution completed by the photosynthetic reaction procedure into the growth regulation unit 20 to perform the growth regulation procedure. The growth regulation unit 20 has a regulating groove 21, and the space in the regulating groove 21 penetrates the partition The partition is a curved flow channel 24 to increase the total length of the flow channel 24 and extend the time for the culture solution to flow in the growth regulation unit 20. In the growth regulation unit 20, the culture solution undergoes a cooling process, and light irradiation is reduced or isolated to slow down or stop the photosynthesis of the microalgae in the culture solution, and make the culture solution and photosynthetic reaction unit in the growth regulation unit 20 The temperature of the culture medium within 10 has a large temperature difference. And the duration of the growth regulation program is not less than the time of the photosynthetic response program, so that the microalgae have sufficient time to repair the physiological damage. Therefore, the algae in the culture fluid can repair the damage of the algae when they pass through the photosynthetic reaction unit 10 or the harvesting unit 30, and the algae in the culture fluid has sufficient time to digest the nutrients obtained in the previous photosynthetic reaction process, and make the algae After it grows to a certain size, it divides further, which increases the number of algae proliferation.

Step 3: Implement a harvesting procedure to harvest part of the microalgae in the culture solution through the harvesting unit 30, and reduce the density of the microalgae in the culture solution.

Step 4: Implement an oxygen exhaust program, in order to introduce the culture liquid into the oxygen exhaust cylinder 51 to discharge the oxygen contained in the culture liquid. In addition, the dead algae in the culture solution is simultaneously extracted through the air extraction device 60 during the oxygen-exhausting procedure.

Step 5: Re-introduce the culture solution after deoxygenation into the photosynthetic reaction unit 10 to restart the photosynthetic reaction process.

The present invention also provides a microalgae product produced by the microalgae culture method.

[Beneficial effects of the embodiment]

The main feature of the microalgae culture system and culture method of the present invention is that after the photosynthetic reaction program in the microalgae culture process is completed, the growth regulating unit 20 can cool down and slow or stop the photosynthetic reaction of the microalgae in the culture solution, so that the microalgae After the algae has sufficient time to repair the physiological damage, and allows the algae to have sufficient time to digest the nutrients of photosynthesis, the algae can further grow and divide to achieve the purpose of improving production efficiency. In addition, the microalgae culture system of the present invention, if dead algae is produced in the culture solution, can simultaneously remove the dead algae in the culture solution through the air extraction device 60 when the microalgae is performing the oxygen exhaustion program, so that the produced algae products are not There will be a foul smell produced by dead algae, and the product will have the aromatic odor of natural algae, thereby achieving the purpose of improving product quality, and can overcome the shortcomings of traditional open algae cultivation systems that the product is easily odorous due to dead algae.

The content disclosed above is only the preferred and feasible embodiments of the present invention, and does not limit the scope of the patent application of the present invention. Therefore, all equivalent technical changes made using the description and schematic content of the present invention are included in the application of the present invention. Within the scope of the patent.

1: Microalgae culture system

10: Photosynthetic reaction unit

101: water inlet

102: water outlet

11: Transparent disc tube

12: auxiliary opening

13: Light source device

20: Growth Regulator Unit

201: Import side

202: Exit

21: adjustment slot

22: The first partition

221: first gap

23: second partition

231: second gap

24: runner

25: Outlet pipe

30, 30a: Harvesting unit

31, 31a: filter assembly

32, 32a: Culture fluid holding tank

33a: Conveyor belt device

34a: harvest container

40: Pressurized conveying device

41: Imported pipe

42: outlet pipe

50: oxygen exhaust device

51: Oxygen Cylinder

52: Liquid collection tube

521: Side exhaust port

53: Liquid inlet

54: Oxygen exhaust pipe

541: Expansion

55: hollow tube

56: buffer slot

57: connecting pipe

60: Exhaust device

61: Blower

62: suction pipe

63: Exhaust pipe

64: Collection container

Figure 1 is a schematic diagram of an embodiment of the microalgae culture system of the present invention.

Fig. 2 is a schematic diagram of another modified embodiment of the harvesting unit adopted in the microalgae cultivation system of the present invention.

Fig. 3 is a schematic cross-sectional view of the oxygen exhaust cylinder and the liquid inlet used in the present invention.

Figure 4 is a schematic flow chart of the microalgae culture method of the present invention.

1: Microalgae culture system

10: Photosynthetic reaction unit

101: water inlet

102: water outlet

11: Transparent disc tube

12: auxiliary opening

13: Light source device

20: Growth Regulator Unit

201: Import side

202: Exit

21: adjustment slot

22: The first partition

221: first gap

23: second partition

231: second gap

24: runner

25: Outlet pipe

30: Harvesting unit

31: Filter assembly

32: Culture medium holding tank

40: Pressurized conveying device

41: Imported pipe

42: outlet pipe

50: oxygen exhaust device

51: Oxygen Cylinder

52: Liquid collection tube

521: Side exhaust port

53: Liquid inlet

54: Oxygen exhaust pipe

541: Expansion

55: hollow tube

56: buffer slot

57: connecting pipe

60: Exhaust device

61: Blower

62: suction pipe

63: Exhaust pipe

64: Collection container

Claims (10)

A microalgae culture system, which comprises: a photosynthetic reaction unit, the photosynthetic reaction unit has a permeable optical tube, the permeable optical tube has a water inlet and a water outlet, the culture solution for cultivating the microalgae The water inlet enters the optically transparent tube, and after photosynthesis is carried out in the optically transparent tube, it is discharged from the water outlet; a growth regulating unit, the growth regulating groove has a regulating groove, and A plurality of first partitions and a plurality of second partitions are arranged inside the adjusting groove, and both ends of the adjusting groove in the longitudinal direction can define an inlet end and an outlet end, and a plurality of the The first and a plurality of the second partitions are arranged in the growth regulating groove along a longitudinal axis in a manner staggered with each other and spaced apart from each other, and divide the inner growth regulating groove into a connection connected to the growth regulating groove. A curved flow channel between the inlet end and the outlet end, the flow rate of the culture solution in the flow channel of the regulating tank slows down and gradually decreases in temperature; a harvesting unit connected to the growth regulating unit The outlet end is used to perform a harvesting procedure to harvest part of the microalgae in the culture solution; a pressurized conveying device is connected to the outlet end of the harvesting unit; an oxygen exhaust device, the oxygen exhaust device having a row An oxygen cylinder, and a liquid collecting cylinder connected to the lower end of the oxygen cylinder, an oxygen exhaust pipe is arranged in the center of the oxygen cylinder, and the outlet of the oxygen exhaust pipe is located at the upper end of the oxygen cylinder. One side is provided with a liquid inlet, the liquid inlet is connected to the pressurized conveying device, the culture solution is sprayed into the oxygen exhaust cylinder through the liquid inlet, and then flows into the liquid collecting cylinder, And the oxygen contained in the culture solution is discharged from the outside of the oxygen exhaust cylinder through the oxygen exhaust pipe; and an exhaust device is connected to the outlet of the oxygen exhaust pipe to generate a vacuum suction to remove the exhaust The oxygen discharged from the oxygen pipe and the dead algae in the culture solution are drawn out of the oxygen exhaust device; Wherein, the culture solution re-enters the photosynthetic reaction unit to perform photosynthesis after passing through the photosynthetic reaction unit, the growth regulation unit, the harvesting unit, and the oxygen exhaust device. The microalgae culture system according to claim 1, wherein one of the opposite sides of the plurality of first partitions is connected to one side wall of the regulating tank, and the other of the plurality of first partitions A first notch is formed between the side and the other side wall of the adjusting groove. Among the opposite sides of the plurality of second partitions, the side corresponding to the first notch is connected to all the adjusting grooves. The side wall, and a second notch is formed between a side opposite to the first notch and the side wall of the isolation groove. The microalgae culture system according to claim 2, wherein the regulating tank slows down or stops the photosynthesis of the microalgae in the culture solution by reducing or isolating light, and the volume of the regulating tank of the growth regulating unit is equal to Or greater than the volume of the photosynthetic reaction unit, and the residence time of the culture solution in the growth regulation unit is not less than the residence time of the culture solution in the photosynthesis reaction unit. The microalgae culture system according to claim 1, wherein the harvesting unit has a filter screen assembly and a culture solution receiving tank, and the culture solution passes through the filter screen assembly and is collected through the filter screen assembly. Part of the microalgae in the culture solution is collected, and the culture solution passing through the filter mesh assembly enters the culture solution receiving tank. The microalgae culture system according to claim 4, wherein the filter assembly of the harvesting unit is arranged on a conveyor belt device, the culture solution receiving tank is arranged below the filter assembly, and the filter The mesh assembly and the conveyor belt device extend above a harvesting container, and the filter mesh assembly is driven by the conveyor belt device to roll toward the harvesting container, and drives the microbe harvested on the filter mesh assembly. Algae enters the harvesting container. The microalgae cultivation system according to claim 1, wherein the suction device has a blower, the blower has an air suction pipe and an exhaust pipe, the air suction pipe The opening connected to the oxygen exhaust pipe is used to extract the exhaust gas and dead algae from the oxygen exhaust pipe, and then discharge the exhaust gas from the exhaust pipe. A method for culturing microalgae, which includes: implementing a photosynthetic reaction procedure to guide a culture medium containing microalgae into a photosynthetic reaction unit, the photosynthetic reaction unit having a transparent optical tube, and the culture medium The microalgae perform photosynthesis in the transparent optical tube; implement a growth regulation program to introduce the culture solution discharged after the photosynthesis reaction program is completed into a growth regulation unit, so that the culture solution flows through When the growth regulation unit gradually cools down, and slows down or stops photosynthesis, the volume of the growth regulation unit is equal to or greater than the volume of the photosynthesis reaction unit, so that the culture medium performs the process in the growth regulation unit The time for the growth regulation procedure is not shorter than the time for the culture solution to perform the photosynthesis reaction procedure in the photosynthetic reaction unit; a harvesting procedure is implemented to introduce the culture solution after the growth regulation procedure is completed into a The harvesting unit is used to harvest part of the microalgae in the culture solution and reduce the density of the microalgae in the culture solution; implement an oxygen exhaust procedure to introduce the culture solution after the harvesting procedure is completed into a row The oxygen in the culture solution is discharged from the oxygen device. The method for cultivating microalgae according to claim 7, wherein the growth regulation unit used in the growth regulation procedure has a regulating groove, and a curved flow channel is formed in the regulating groove through a plurality of partitions. , To extend the time for the culture solution to pass through the regulating tank. The method for culturing microalgae according to claim 7, wherein in the oxygen-exhausting procedure, the oxygen-exhausting device is also connected through an air pumping device to remove the gas discharged from the oxygen-exhausting device and the gas in the culture solution The dead algae are evacuated from the oxygen exhaust device. A microalgae product produced by the method for culturing microalgae in any one of Claims 7 to 9.

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