CN206232727U - Microalgae farming equipment - Google Patents

Abstract

A microalgae cultivation device belongs to the technical field of aquaculture and is invented for increasing the productivity of unit production space. It contains support, water container, light source, contains control circuit and executive device's aquaculture water body parameter regulation and control device, characterized by: the number of the water containers is not less than 2, and the volume values of the water containers are gradually increased one by one. The bracket is provided with an upright post; the water container outside the top end is a circular water tank with a through center; the center of the annular water tank is sleeved on the upright post and fixedly connected with the upright post. The executive device of the culture water parameter regulating device is characterized in that at least one of a light source, a gas channel, an outlet, a nutrient solution channel, an outlet, a heat exchange pipeline and a spiral guide plate is arranged on a support: a sucker is arranged below the bracket; at least two of a light source, a gas channel and an outlet, a nutrient solution channel and an outlet, a heat exchange pipeline and a spiral guide plate are distributed on the bracket.

Description

Microalgae farming equipment

technical field

The utility model belongs to the field of industrialized aquaculture, and specifically relates to a cultivation device and a technological process for improving the output and quality of microalgae aquaculture such as chlorella by using three-dimensional space, gravity, airflow and artificial light source.

Background technique

The current culture of microalgae is mainly based on shallow waterway ponds and open culture, and shallow waterway ponds are microalgae culture ponds with looped circulating waterways (such as paper clips). The depth of the culture solution in a typical waterway is about 0.3 meters (because the light is difficult to reach, increasing the water depth will not increase the yield), and the width is about 3 to 5 meters. There are paddle wheels at one end to agitate and mix the culture solution and deflectors to direct the flow of water. During the day the paddle wheel turns, the water in front of it begins to flow continuously, and the cultivation begins. After the cultivation is completed, the culture fluid is harvested behind the paddle wheel. However, open culture in shallow water channel ponds has the following disadvantages:

1. In order to prevent the sedimentation of the microalgae culture solution, the paddle wheel needs to be turned full-time during the day.

2. The light source of the open breeding pond depends on the sunlight. Due to the refraction of the water, the light transmission is not deep enough to make the pond not deep, and the space utilization rate is not high.

3. The time and intensity of light exposure in open breeding ponds are also affected by cloudy sky and no light after sunset.

4. Open culture ponds cannot guarantee the light quality and light intensity required for each growth period.

5. Water in open shallow channel culture ponds will be lost due to evaporation.

6. The culture solution in the open culture pond directly uses carbon dioxide in the atmosphere, and its solubility will be reduced by high temperature.

7. Open breeding ponds are polluted by air such as wind and rain.

8. The culture medium will be polluted by the entry of animals into the open culture pond.

9. Open breeding ponds are prone to algae and algae-eating microorganisms, which affect the quality.

10. Due to the poor mixing effect of the paddle wheel in the open shallow channel pool, it is difficult to form the best light-dark ratio and affect the quality.

11. Due to the U-shaped waterway in the current shallow water channel pool, there will be uneven distribution of nutrients when it is put in.

12. The temperature of the water in the open shallow water channel will fluctuate during the day.

13. In open shallow water channel pools, affected by seasonal changes, microalgae grow very slowly when the water temperature is lower than 10 degrees Celsius, so cold and temperate regions cannot be cultured in winter.

The above reasons make the annual output and quality of microalgae culture in open culture ponds very low.

There are also experiments with industrial farming of microalgae. According to public information: Generally, a light-transmitting pipe or a light-transmitting film container with a radius of no more than 0.3 meters is used, and microalgae seeds are placed in a container filled with nutrient solution. When the microalgae grows to a suitable content in the container, harvest Microalgae for next production. The analysis shows that the space utilization rate in the container changes periodically, gradually increasing from a low utilization rate (this time is when microalgae seeds are placed) to appropriate (this time is when seaweed is harvested), and then enters the next process. It can be seen that its overall space utilization rate is low, which limits the production capacity per unit of production space.

Invention content

The purpose of the utility model is to improve the production capacity of a unit production space in microalgae cultivation, and disclose a microalgae cultivation equipment and a process flow.

This purpose is achieved as follows:

A kind of microalgae cultivation equipment, comprising a bracket, a water container, a light source, and a control device for controlling parameters (temperature, nutrient concentration, oxygen content, carbon dioxide concentration, light spectrum and intensity) of the cultivation water body including a control circuit and an actuator, and is characterized in that : The number of water containers mentioned is not less than 2, and their volume values increase one by one. Furthermore, each water container is fixed on the bracket with the small upper part and the lower part; the adjacent water containers are connected by pipelines with one-way valves (siphon tubes are regarded as equivalent replacements). Further, said bracket has a column; the water container outside the top is an annular water tank with a transparent center; the center of the annular water tank is sleeved on the column and fixedly connected with the column.

And, an executive device of an aquaculture water parameter control device that is easy to deploy (hereinafter may be referred to as: water body parameter control executive device), and a light source, a gas channel and an outlet, a nutrient solution channel and an outlet, a heat exchange pipe, At least one of the five deflectors, characterized in that there is a suction cup under the bracket (extended to be a structure that facilitates assembly and disassembly, such as the hook and buckle structure that matches the pool bottom as an equivalent replacement.); it is arranged on the bracket There are at least two of light source, gas channel and outlet, nutrient solution channel and outlet, heat exchange pipe, and deflector. Further, a light source is arranged on the support (thus making the light source dispersed in the water body, thereby breaking through the limitation of the light depth on microalgae cultivation).

And, matched with the equipment, a process flow of microalgae cultivation, including water container preparation, cultivation water body preparation and cultivation water body parameter regulation, light source illumination regulation, microalgae seed placement, microalgae harvesting; it is characterized in that: The number of water containers is not less than 2, and its volume value increases one by one, wherein the smallest one puts microalgae seeds, which is called the seeding pool, and the largest one harvests microalgae, which is called the algae harvesting pool; the microalgae seeds Put it in the seeding pool; as the microalgae needs better proliferation and growth conditions, carry out regularly:

A. Empty the algae harvesting tank, collect the microalgae and the culture medium (for post-cultivation treatment such as filtration and drying, and the culture medium can be reused after being sterilized and deoxygenated after filtration), and clean the algae harvesting tank;

B. Transfer the microalgae in the smaller water container together with the culture solution to the larger water container step by step, and increase the capacity of the culture solution to the larger water container, and clean the water container that has just been emptied; until the seeding pool is drained emptying and cleaning;

C. Add new culture medium into the seeding pool and put in new microalgae seeds.

The intentional effect of the present utility model: known by above-mentioned equipment and technique, if need 5 days from throwing seed to harvest, carry out the interval time of above-mentioned A, B, C operation is 1 day, then according to this technique, can harvest once every day, now If there is a craft, it takes 5 days to harvest once. It can be seen that the utility model greatly increases the production capacity per unit production space and realizes the purpose of the invention.

Description of drawings

Introduce embodiments of the present utility model below in conjunction with accompanying drawing.

Figures 1 to 4 are schematic diagrams of embodiments of a utility model of microalgae cultivation equipment.

Fig. 1 is a schematic diagram of a utility model embodiment of a microalgae cultivation equipment with a slight top view. For the sake of illustration, the display of water body parameter regulation and control actuators and several water tank covers are omitted.

Fig. 2 is a schematic diagram of an embodiment of a utility model of a microalgae cultivating equipment with a slight upward view.

FIG. 3 is a partially enlarged view of FIG. 2 , mainly showing the structure of the layered stent 101 .

Fig. 4 is a schematic diagram showing the arrangement of the annular water tank 200 and the water body parameter regulation and control execution device.

Fig. 5 is a schematic diagram of an embodiment of a water body parameter regulation and execution device.

Fig. 6 is a partially enlarged view of the lower part of Fig. 5 .

Fig. 7 is a partial enlarged view of the upper part of Fig. 5 .

As shown in the figure:

100-Axis main bracket (i.e. column), 101-Layered bracket, 200-Water tank (i.e. water container), 201-Water tank cover, 300-Water body parameter control actuator, 301-Suction cup, 302-Circular base, 303 -air supply port, 304-microporous aerator, 305-column, 306-hollow conduit, 307-deflector, 308-LED light strip, 309-LED lamp, 310-cold/heat exchange tube.

detailed description

Below in conjunction with accompanying drawing, the utility model is described in detail:

A kind of microalgae cultivation equipment, comprising a bracket, a water container, a light source, and a control device for controlling parameters (temperature, nutrient concentration, oxygen content, carbon dioxide concentration, light spectrum and intensity) of the cultivation water body including a control circuit and an actuator, and is characterized in that : The number of water containers mentioned is not less than 2, and their volume values increase one by one. Furthermore, each water container is fixed on the bracket with the small upper part and the lower part; the adjacent water containers are connected by pipelines with one-way valves (siphon tubes are regarded as equivalent replacements). Further, said bracket has a column; the water container outside the top is an annular water tank with a transparent center; the center of the annular water tank is sleeved on the column and fixedly connected with the column. Preferably, the number of said water containers is no more than 8.

As shown in Figures 1 to 4, the microalgae cultivation equipment described in the utility model includes 100-central axis main support, 101-layered support, 200-water tank, 201-water tank cover, and 300-water body parameter control and execution device. The volume of the upper layer of the water tank 200 is smaller than that of the lower layer according to the set ratio. The water body parameter control actuators placed in the water tanks 200 are arranged according to the set formation as shown in Figure 5, and the formations arranged in the water tanks 200 of each layer are slightly different.

And, an executive device of an aquaculture water parameter control device that is easy to deploy, a light source, a gas channel and an outlet, a nutrient solution channel and an outlet, and heat exchange pipes are arranged on the support (including a circular base 302 and a number of small columns 305,) At least one of the five deflectors, which is characterized by: there is a suction cup under the bracket (extended to be a structure that is convenient for assembly and disassembly, such as the hook and buckle structure matched with the bottom of the pool is regarded as an equivalent replacement.); on the bracket At least two of light source, gas channel and outlet, nutrient solution channel and outlet, heat exchange pipe, and deflector are arranged on the top. Further, a light source is arranged on the bracket.

As shown in Figures 5 to 7, the water body parameter control actuator 300 of the present invention includes 301-suction cup, 302-circular base, 303-air supply port, 304-microporous aerator, 305-column, 306 -Hollow duct, 307-deflector, 308-light bar, 309-LED lamp, 310-cold/heat exchange tube. The LED lights 309 are configured according to the desired quality and intensity of light. The required gas is connected to the hollow conduit 306 from the external gas supply source, and then delivered to the microporous aerator 304 through the gas supply port 303 . The cold/heat exchange tube 310 is put into the hollow conduit 306 as needed. Specifically, the water body parameter regulation and control execution device includes a circular base 302, the bottom surface of the circular base 302 is fixed to the suction cup 301, and the microporous aerator 304 is fixed on the center of the circular base 302, and several (the embodiment is 5) The lower end of the small column 305 is fixed to the edge of the circular base 302, and each small column is fixed with a light bar 308, a deflector 307, a hollow conduit 306, and an air supply port 303 of the microporous aerator 304 It is connected to one of the hollow conduits 306, and the other hollow conduits 306 are temporarily inserted into the cooling/heat exchange tubes 310 (when heating or cooling is required).

Arranging the array of the water body parameter regulation and control execution device in the aforementioned water container of the aquaculture equipment of the utility model, namely: a kind of microalgae cultivation equipment as described above, characterized in that: the execution of the aquaculture water body parameter regulation device The device is equipped with at least two kinds of light source, gas channel and outlet, nutrient solution channel and outlet, heat exchange pipe, and deflector on the support, and includes a light source, and there is a sucker under the support; the aquaculture water parameter control device The executive device array is arranged in the water container, and the suction cup is adsorbed on the surface of the water container at the bottom.

Preferably, the number of water containers is between 3 and 8; the depth of the water containers is between 60 and 120 cm.

Compared with the production mode of shallow waterway (water depth 35 cm) single-layer (the space utilization rate is not high), compared with three-dimensional culture, the same production area, the embodiment (the number of water containers is 4, water depth 100 cm) for microalgae culture The volume of the water body is 6-12 times that of the shallow channel production mode. Even without considering the gain brought by the convenience of regulation and control of breeding parameters such as the light cycle, the production capacity per unit production area of the present invention is 6-12 times that of the shallow waterway production method.

And, matched with the equipment, a technological process for microalgae cultivation, including water container preparation (and its layer arrangement, the number and formation of water body parameter regulation and control actuators), cultivation water preparation and cultivation water parameter regulation, Control of light source and light, release of microalgae seeds, harvesting of microalgae; it is characterized in that: the number of said water containers is not less than 2, and its volume value increases one by one, among which the smallest one puts in microalgae seeds, which is called seeding In the largest pool, the microalgae is harvested, which is called the algae harvesting pool; the microalgae seeds are placed in the seeding pool; as the microalgae's optimal proliferation and growth conditions require, it is carried out regularly:

A. Empty the algae harvesting pool, collect the microalgae and the culture medium (for post-cultivation treatment such as subsequent filtration and drying), and clean the algae harvesting pool;

B. Transfer the microalgae in the smaller water container together with the culture solution to the larger water container step by step, and increase the capacity of the culture solution to the larger water container, and clean the water container that has just been emptied; until the seeding pool is drained emptying and cleaning;

C. Add new culture medium into the seeding pool and put in new microalgae seeds.

Further, in the technical process of microalgae cultivation, the number of water containers is between 3 and 8, and the upper and lower layers are arranged; the depth of the water containers is between 60 and 120 cm; An array of executive devices of the aquaculture water parameter control device described above.

In conjunction with accompanying drawing, the utility model is described in detail as follows:

The number of layers of the several layered supports (that is, the number of water containers) is at least 2 layers and not more than 8 layers, and the number of layers is determined by the following conditions:

1. The daily growth rate R of the cultured microalgae (such as chlorella is 10.6), 2. The biomass or growth density d of the cultured microalgae (such as chlorella is 2.2g/ml), 3. The cultured microalgae The rapid growth period G of algae (such as Chlorella is from the third day G _min to the tenth day G _max ), 4. The life cycle L of the cultured microalgae (such as Chlorella is twelve days), 5. The smallest tank volume V at the top; for example:

The daily new density N after growth is obtained by the following formula:

N _x =(d/VCy-1)(1+R) ^x x is the number of days for the microalgae to be cultured in the water tank of this layer, x﹤L, G _min ﹤x﹤G _max ; y is the number of layers and the top layer is 1; After finding x days, compare whether the growth density in the water tank of this layer is greater than the algae growth density, if so be the required number of layers (if the top layer of chlorella is 1 cubic meter, the number of layers obtained by the above method is 4 Floor).

In the water tank, a number of water body parameter regulation and control actuators that can provide light, gas and biological nutrients are placed in an array, and the number of them is determined by the following conditions:

1. The type of microalgae to be cultured should be placed according to the light quality and intensity required by the microalgae, 2. The growth period of the microalgae, 3. The volume of each layer of water tank, 4. The light intensity of the water body parameter control actuator.

After determining the number of water tank layers and the number and formation of water body parameter control actuators on each layer, the following work can be started:

D1. After installing the main support column of the central axis on the ground, install the support and the water tank on the main support column of the central axis in layers according to the number of layers required by the cultured microalgae, and fix it on the main support of the central axis from large to small, from low to high On the column, the distance between each layer is 30~150cm; according to the needs of the cultured microalgae, the water body parameter control actuators are placed in the water tanks of each layer above according to the array form and quantity required by the cultured microalgae and fixed with suction cups.

D2. In the next step, place the seed strains in the water tank filled with water according to the cultured microalgae.

D3. In the next step, turn on the light of the water body parameter regulation and control actuator; because the light of the water body parameter regulation and control actuator is irradiated to all sides at 360 degrees, because the light source of the water body parameter regulation and control actuator is placed in the water of the water tank, so Solve the problem that the light cannot penetrate deep in the water; the normal sunshine duration is 8-10 hours, but now it is an artificial light source, so the daily light receiving time can be adjusted according to the best light receiving time of the cultured microalgae; because the microalgae There is no need for a light source during splitting, so the total cycle length of the light-dark ratio can also be adjusted as required (such as 5:2, that is, a seven-hour cycle); the restriction of cloudy days and no light after sunset is lifted, and the life of microalgae is greatly lengthened The time of photosynthesis and the shortening of the days of the growth cycle (because the light-dark cycle can be multiple times in one day) increase the yield; in addition, the light source can adjust the light quality (blue, white light, etc.) according to the microalgae cultured or the growth period to improve the quality .

D4. In the next step, connect the microporous aerator on the water body parameter regulation and control executive device to a controllable gas supply source (such as supplying carbon dioxide during the light-emitting period, and changing to supplying oxygen during the dark period). Bubbles are sprayed upwards and around the bottom of the water. Because the bubbles are small and float upward from the bottom for a long time, the solubility of gas in water is much higher than that in water surface, and it is less affected by the depth and temperature of water, thus increasing the growth rate of microalgae; And because of the non-stop ejection of gas, a gushing flow is formed, and there is a deflector behind each lamp post, so the microbubbles ejected to the surroundings are guided by the deflector, and are formed centered on each water body parameter control actuator. The vortex, so the temperature of the culture solution in the water tank will be uniform; because of the gushing current and vortex, the microalgae will be drawn by the water flow, and cannot attach to the vicinity of the light column, but keep moving in all directions, thus solving the problem caused by too strong or too dark light intensity. The problem of microalgae growth.

D5. In the next step, various nutrients required for breeding are injected into the culture solution through the catheter on the water body parameter control actuator. Because of the surge and eddy, the uneven distribution of nutrients is solved.

D6. In the next step, if the temperature is lower or higher than the breeding requirements, you can put the heat pipe or the cold pipe in one of the pipes, so that the temperature of the culture medium can be adjusted back to the required range, so it can be cultivated in winter.

D7. In the next step, it can be kept warm after being covered; prevent animals from entering and contaminate the culture medium; prevent algal growth due to air pollution such as wind and rain; prevent water evaporation, etc., thereby improving the quality. After photosynthesis, there are more oxygen ions in the space of the covered water tank, which not only can guarantee the needs of the microalgae cultured in dark light, but also can be released into the atmosphere during photosynthesis to improve the air quality.

D8. In the next step, put one end of the siphon on the bottom of the culture solution in the top tank on the second day, and put the other end in the water tank on the next layer (the second layer), and guide the culture solution from the top layer into the next layer. full of water. The top layer repeats items D2 to D7, while the second layer repeats items D3 to D7.

D9, the next step, on the third day, put one end of the siphon tube at the bottom of the second layer of water tank, and the other end in the water tank of the next layer (third layer), and introduce the culture solution of the second layer into the third layer, and then put the second layer of culture solution into the third layer after completion. Fill up the third layer with water, repeat items D3 to D7 for the third layer; then repeat item D8 for the top layer and the second layer.

D10, the next step, and so on, repeat item D9 every day until the number of days of culture = the number of layers of the water tank, and then the bottom mature microalgae culture solution can be harvested.

D11. There will be a fixed harvest according to each set interval in the future, so production and sales can be arranged like industrial production.

Claims (6)

1. A microalgae breeding equipment, comprising a bracket, a water container, a light source, a culture water parameter control device including a control circuit and an actuator, characterized in that: the number of the water containers is not less than 2, and the volume value is incremented one by one. 2. A microalgae culture equipment according to claim 1, characterized in that: each water container is fixed on the bracket with a small top and a large bottom; adjacent water containers are connected by pipelines with one-way valves. 3. A kind of microalgae breeding equipment according to claim 2, characterized in that: said support has a column; the water container outside the top is a transparent annular water tank; the center of the annular water tank is set on the column Fastened to the column. 4. A microalgae culture equipment according to any one of claims 1-3, characterized in that: preferably, the number of said water containers is not more than 8. 5. A kind of microalgae breeding equipment according to claim 3, characterized in that: the executive device of the water body parameter control device is equipped with a light source, a gas channel and an outlet, a nutrient solution channel and an outlet, and a heat exchange pipe on the support At least two of the five, deflector, which include a light source, and a suction cup under the bracket; the actuator array of the aquaculture water parameter control device is arranged in the water container, and the suction cup is adsorbed on the surface of the water container at the bottom. 6. The microalgae culture equipment according to claim 5, characterized in that: the number of water containers is between 3 and 8; the depth of the water containers is between 60 and 120 cm.