CN219792928U

CN219792928U - Integrated device for culturing and harvesting microalgae and directly obtaining algae powder

Info

Publication number: CN219792928U
Application number: CN202321238701.XU
Authority: CN
Inventors: 吴诗瑶; 廖强; 林恺宁; 顾冉; 马欲翔; 高川惠; 齐丹霖; 钱欣超
Original assignee: Chongqing University
Current assignee: Chongqing University
Priority date: 2023-05-22
Filing date: 2023-05-22
Publication date: 2023-10-03
Anticipated expiration: 2033-05-22

Abstract

The utility model discloses an integrated device for cultivating, harvesting and directly obtaining algae powder, which comprises a photoreactor and a microbubble aerator, wherein the liquid outlet end of the photoreactor is communicated with the liquid inlet end of a filtering and drying cylinder, the filtering and drying cylinder comprises a cylinder body which is vertically arranged, the bottom of the cylinder body is provided with an algae discharging valve, the side wall of the cylinder body is provided with a liquid inlet, a liquid draining box is sleeved outside the part of the cylinder body below the liquid inlet, the part of the cylinder body covered by the liquid draining box is provided with a circle of filtering ring groove, the filtering ring groove is covered with an ultrafiltration membrane, a heating coil and a drying fan are arranged above the cylinder body, the drying fan is provided with a solar heating system, the solar heating system comprises a water storage tank, the water outlet end of the water storage tank is communicated with the water inlet end of the heating coil, the water outlet end of the heating coil is communicated with the water inlet end of the solar collector, and the water outlet end of the solar collector is communicated with the water inlet end of the water storage tank. The algae powder is more efficient to collect, and the loss generated in the transfer process is reduced as much as possible.

Description

Integrated device for culturing and harvesting microalgae and directly obtaining algae powder

Technical Field

The utility model relates to the technical field of algae cultivation and acquisition, in particular to an integrated device for microalgae cultivation and harvesting and directly acquiring algae powder.

Background

Microalgae is cultivated, and microalgae cells reach an artificial cultivation mode of mass growth and proliferation under certain conditions. The former includes various vessel and pipe closed culture methods, and the latter includes open non-circulation culture and open circulation culture as well as semi-open circulation culture. Because the microalgae production needs a liquid environment, the microalgae is difficult to store, transport and use, and the existing microalgae harvesting device can only simply harvest the microalgae.

Patent document with publication number CN 214032498U discloses a micro algae cultivation system, comprising a glass greenhouse, wherein a photo bioreactor, an air supply device, a membrane filtration device, a drying device and a control device are arranged in the glass greenhouse, which can cultivate, filter and dry algae, but because the filtration and the drying are carried out by two devices, algae are easily caused to adhere to the last container in the transferring process, so that algae cannot be completely separated, the algae liquid volume is huge, and the transportation cost is increased. At present, most of the microalgae are applied to pollution control and industrial application, and the microalgae still have great limitation on the popular application of the microalgae.

Disclosure of Invention

The utility model aims to solve the technical problems in the prior art, and particularly creatively provides an integrated device for culturing and harvesting microalgae and directly obtaining algae powder, which integrates the functions of culturing and obtaining the algae powder, is more efficient in algae powder collection and reduces the loss generated in the transfer process as much as possible.

In order to achieve the above purpose, the utility model provides an integrated device for cultivating, harvesting and directly obtaining algae powder, which comprises a light reactor with a built-in light source, wherein a microbubble aerator is arranged at the bottom of the light reactor, the microbubble aerator is provided with an aeration fan, the liquid outlet end of the light reactor is communicated with the liquid inlet end of a filtering and drying cylinder, the filtering and drying cylinder comprises a vertically arranged cylinder body, a drying fan is arranged above the cylinder body, an algae discharging valve is arranged at the bottom of the cylinder body, algae is discharged through the algae discharging valve after being dried by the drying fan, a liquid inlet and a liquid discharging box sleeved on the cylinder body are sequentially arranged on the side wall of the cylinder body from top to bottom, a circle of filtering ring groove is formed in the part of the cylinder body covered by the liquid discharging box, the filtering ring groove is used for being communicated with the liquid discharging box, an ultrafiltration membrane is covered on the filtering ring groove, and the liquid outlet end of the liquid discharging box is communicated with the liquid inlet end of the light reactor.

In the scheme, the method comprises the following steps: and a heating coil is arranged below the drying fan, and the heating coil is provided with a solar heating system.

In the scheme, the method comprises the following steps: the solar heat supply system comprises a water storage tank, the water outlet end of the water storage tank is communicated with the water inlet end of the heat supply coil, the water outlet end of the heat supply coil is communicated with the water inlet end of the solar heat collector, and the water outlet end of the solar heat collector is communicated with the water inlet end of the water storage tank.

In the scheme, the method comprises the following steps: the cylinder is made of metal net, a circle of water receiving groove is concavely arranged at the top of the liquid draining box around the cylinder, and a water inlet is arranged at the bottom of the water receiving groove. The water receiving groove can avoid the overflow of the nutrient solution.

In the scheme, the method comprises the following steps: the top of the cylinder body is covered with an air inlet cover, and a cover net of the air inlet cover is also made of an ultrafiltration membrane. The air inlet quantity can be increased, and meanwhile, the algae can be prevented from being blown out from the top of the cylinder body after being dried.

In the scheme, the method comprises the following steps: the PTC ceramic heating plate is arranged on the outer side wall of the cylinder body, so that drying efficiency is improved.

In the scheme, the method comprises the following steps: the light reactor comprises an outer cylinder and an inner cylinder which is communicated up and down, the bottom of the outer cylinder is sealed, a cylinder cover is arranged at the top of the outer cylinder, an exhaust hole is formed in the cylinder cover, the inner cylinder is placed in the outer cylinder, a red and blue LED lamp is vertically arranged in the inner cylinder, the top end of the red and blue LED lamp is fixed on the cylinder cover, a notch is formed in the side wall of the inner cylinder, close to the bottom, of the inner cylinder, so that the bottom of the inner cylinder is communicated with the bottom of the outer cylinder, a micro-bubble aerator is arranged in the inner cylinder and close to the bottom, an air pipe of the micro-bubble aerator penetrates through the inner cylinder and the outer cylinder to be connected with an aeration fan, and a check valve and an air inlet valve are sequentially arranged on the air pipe along the air flow direction of the air pipe.

In the scheme, the method comprises the following steps: two groups of isolation fins are arranged on the outer side wall of the inner cylinder at intervals up and down, and the isolation fins of each group are arranged at intervals along the circumferential direction of the inner cylinder. The space between the inner cylinder and the outer cylinder can be stably limited, and the inner cylinder is prevented from leaning on the outer cylinder, so that aeration dead angles are prevented from being generated, and the algae cultivation is prevented from being influenced.

In the scheme, the method comprises the following steps: the isolation fins are vertically arranged, so that the influence on the flow of liquid in the photoreactor is avoided.

In the scheme, the method comprises the following steps: the liquid outlet end of the optical reactor is arranged at the bottom of the side wall of the outer barrel, and the liquid inlet end of the optical reactor is arranged at the top of the side wall of the outer barrel, so that the complete discharge of nutrient solution or algae in the optical reactor can be ensured.

In the scheme, the method comprises the following steps: the solar energy charging device is characterized by further comprising a storage battery and a solar photovoltaic panel, wherein the charging end of the solar photovoltaic panel is connected with the electric quantity input end of the storage battery, and the storage battery is used for supplying power to the photoreactor, the micro-bubble aerator, the aeration fan, the drying fan and the algae discharging valve, so that solar energy can be fully utilized, and carbon emission is saved.

In summary, the beneficial effects of the utility model are as follows: the light reactor and the micro-bubble aerator are used for culturing algae, the filtering and drying cylinder is used for filtering algae, the drying fan and the heating coil are used for drying algae in the filtering and drying cylinder, and after the drying is finished, the algae is discharged from the algae discharging valve. The algae powder can be directly obtained after drying without transferring to other equipment, so that the transportation energy consumption is reduced, the labor cost is reduced, and the algae powder is easier to store.

Drawings

FIG. 1 is a schematic diagram of a system of the present utility model;

FIG. 2 is a cross-sectional view of a filter dryer cartridge;

FIG. 3 is a schematic view of a photoreactor;

FIG. 4 is a schematic view of an LED lamp and a cartridge cover;

FIG. 5 is a schematic view of an inner barrel.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.

As shown in fig. 1 to 5, an integrated device for cultivating, harvesting and directly obtaining algae powder comprises a airlift type optical reactor 1 with a built-in light source, wherein a micro-bubble aerator 3 is arranged at the bottom of the optical reactor 1, the micro-bubble aerator 3 is provided with an aeration fan 4, and a liquid outlet end 1i of the optical reactor 1 is communicated with a liquid inlet end of a filtering and drying cylinder 8 through a water pipe.

The light reactor 1 comprises an outer cylinder 1a and an inner cylinder 1b which is vertically communicated, a liquid outlet end 1i of the light reactor 1 is arranged at the bottom of the side wall of the outer cylinder 1a, and a liquid inlet end 1h of the light reactor 1 is arranged at the top of the side wall of the outer cylinder 1a, so that complete discharge of nutrient solution or algae in the light reactor 1 can be ensured. And valves are arranged on the liquid outlet end 1i and the liquid inlet end 1h, and the valves of the liquid outlet end 1i and the liquid inlet end 1h can be controlled to be opened periodically by a controller in specific implementation. The bottom of the outer cylinder 1a is closed, the top is provided with a cylinder cover 1g, and the cylinder cover 1g is provided with an exhaust hole. The inner cylinder 1b is placed in the outer cylinder 1a, and a red and blue LED lamp 1c is vertically arranged in the inner cylinder 1 b. The number of the red and blue LED lamps 1c is two, the top ends of the two red and blue LED lamps 1c are fixed on the cylinder cover 1g, the two red and blue LED lamps 1c are respectively a red light lamp tube and a blue light lamp tube, and the two LED lamps 1c can be controlled to alternately emit light through a controller in specific implementation, wherein the light emitting period is 70% of red light and 30% of blue light. A gap 1e is arranged near the bottom on the side wall of the inner cylinder 1b, so that the bottom of the inner cylinder 1b is communicated with the bottom of the outer cylinder 1a, and the algae and nutrient solution at the bottom are conveniently discharged.

The micro-bubble aerator 3 is located in the inner cylinder 1b and is arranged near the bottom, and preferably, the distance between the micro-bubble aerator 3 and the inner wall of the inner cylinder 1b is 4-6 cm. The air pipe of the micro-bubble aerator 3 passes through the inner cylinder 1b and the outer cylinder 1a to be connected with the aeration fan 4. The air pipe is provided with a non-return valve 3a and an air inlet valve 3b in sequence along the air flow direction. Wherein, the outer side wall of the inner cylinder 1b is provided with two groups of isolation fins 1d at intervals up and down, and the isolation fins 1d of each group are arranged at intervals along the circumferential direction of the inner cylinder 1 b. The space between the inner cylinder 1b and the outer cylinder 1a can be stably limited, and the inner cylinder 1b is prevented from leaning against the outer cylinder 1a, thereby preventing the algae cultivation from being affected. And the isolation fins 1d are vertically arranged, so that the influence on the liquid flow in the photoreactor 1 is avoided.

The filtering and drying cylinder 8 comprises a cylinder body 8a which is vertically arranged, an algae discharging valve 7 is arranged at the bottom of the cylinder body 8a, and the bottom of the cylinder body 8a is sealed through the algae discharging valve 7. The algae discharging valve 7 is a butterfly valve, and a discharging cylinder can be detachably connected below the algae discharging valve 7. The side wall of the cylinder 8a is provided with a liquid inlet, and a liquid discharge box 12 is sleeved outside a part of the cylinder 8a below the liquid inlet. The part of the cylinder 8a covered by the drain box 12 is provided with a circle of filtering ring grooves 8b, and the filtering ring grooves 8b are used for communicating with the drain box 12. The filtering ring groove 8b is covered with an ultrafiltration membrane, and the liquid outlet end of the liquid discharge box 12 is communicated with the liquid inlet end 1h of the photoreactor 1 through a water pipe. Specifically, the cylinder 8a of the present embodiment is made of a metal mesh, and the nutrient solution is allowed to flow into the drain tank 12 through the mesh of the metal mesh. Correspondingly, the top of flowing back case 12 is equipped with round water receiving recess 12a around barrel 8a concave, and water receiving recess 12 a's bottom is equipped with inlet port 12b, and the water receiving recess 12 that sets up can prevent the nutrient solution as far as possible and overflows, ensures that the nutrient solution is retrieved completely. The upper part of the cylinder 8a is sequentially provided with a heating coil 11 and a drying fan 14 from bottom to top, and the outer side wall of the cylinder 8a is provided with a PTC ceramic heating plate 13, so that the drying efficiency is improved. The drying blower 14 is equipped with a solar heating system including the water storage tank 10. The water outlet end of the water storage tank 10 is communicated with the water inlet end of the heating coil 11, the water outlet end of the heating coil 11 is communicated with the water inlet end of the solar heat collector 9, the water outlet end of the solar heat collector 9 is communicated with the water inlet end of the water storage tank 10, and the water pipes are all provided with a conveying pump a.

The top of the cylinder 8a is covered with an air inlet cover 6, the top of the air inlet cover is propped against the hot coil, and a cover net of the air inlet cover 6 is also made of an ultrafiltration membrane, so that algae is prevented from being blown out from the top of the cylinder 8a after being dried.

The solar energy photovoltaic system further comprises a storage battery 5 and a solar energy photovoltaic panel 2, the charging end of the solar energy photovoltaic panel 2 is connected with the electric quantity input end of the storage battery 5, the storage battery 5 is used for supplying power for the photoreactor 1, the microbubble aerator 3, the aeration fan 4, the drying fan 14, the conveying pump a, the PTC ceramic heating plate 13 and the algae discharging valve 7, solar energy can be fully utilized, and carbon emission is saved.

When in use, chlorella is cultured in the airlift columnar photoreactor 1 with the built-in light source, after the culture period is finished, the valve at the liquid outlet end 1i is opened, after the algae liquid is filtered by the ultrafiltration membrane, the algae mud is left in the cylinder, and the nutrient solution is led back into the reactor. The algae liquid is discharged into a cylinder 8a for filtering to obtain algae mud, the filtered culture liquid is fed back to the photoreactor 1 for continuously culturing microalgae after nutrient substances are added, the pH value is regulated, and the algae mud is remained in the cylinder 8 a. The drying fan 14 is turned on, algae powder is formed after the algae mud is dried in the cylinder 8a, the algae discharging valve 7 is turned on, and the algae powder can be obtained after the algae mud directly falls out of the bottom end of the cylinder 8a into an external material collecting box. The electric energy required by the device is provided entirely by the solar photovoltaic panel 2 and the accumulator 5. The infusion pipeline is connected with the photoreactor 1 and the filtering and drying cylinder 8 to ensure the recycling of the culture solution.

While embodiments of the present utility model have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the utility model, the scope of which is defined by the claims and their equivalents.

Claims

1. The utility model provides an integrated device of harvesting and directly obtaining algae powder is cultivateed to little algae, includes the photoreactor (1) of built-in light source, the bottom of photoreactor (1) is equipped with microbubble aerator (3), microbubble aerator (3) are equipped with aeration fan (4), its characterized in that: the utility model provides a light reactor (1) goes out liquid end (1 i) intercommunication and filters stoving section of thick bamboo (8) feed liquor end, filter stoving section of thick bamboo (8) including barrel (8 a) of vertical setting, the top of barrel (8 a) is equipped with stoving fan (14), the bottom of barrel (8 a) is equipped with algae valve (7), discharges algae through algae valve (7) of rethread algae after drying through stoving fan (14), be equipped with feed liquor mouth and cover drain box (12) on barrel (8 a) from last to being equipped with down in proper order on the lateral wall of barrel (8 a), barrel (8 a) are offered round filtration annular (8 b) by the part of drain box (12) cage, filtration annular (8 b) are used for being linked together with drain box (12), filtration annular (8 b) are last to be covered with the milipore, the drain end intercommunication light reactor (1) feed liquor end (1 h) of drain box (12).

2. The integrated device for microalgae cultivation and harvesting and directly obtaining algae powder according to claim 1, wherein the integrated device is characterized in that: a heating coil pipe (11) is arranged below the drying fan (14), and the heating coil pipe (11) is provided with a solar heating system.

3. The integrated device for microalgae cultivation and harvesting and directly obtaining algae powder according to claim 2, wherein the integrated device is characterized in that: the solar heat supply system comprises a water storage tank (10), wherein the water outlet end of the water storage tank (10) is communicated with the water inlet end of a heat supply coil pipe (11), the water outlet end of the heat supply coil pipe (11) is communicated with the water inlet end of a solar heat collector (9), and the water outlet end of the solar heat collector (9) is communicated with the water inlet end of the water storage tank (10).

4. The integrated device for microalgae cultivation and harvesting and directly obtaining algae powder according to claim 1, wherein the integrated device is characterized in that: the cylinder body (8 a) is made of metal net, a circle of water receiving groove (12 a) is concavely arranged on the top of the liquid draining box (12) around the cylinder body (8 a), and a water inlet hole (12 b) is arranged at the bottom of the water receiving groove (12 a).

5. The integrated device for microalgae cultivation and harvesting and directly obtaining algae powder according to claim 4, wherein the integrated device is characterized in that: an air inlet cover (6) is covered at the top of the cylinder body (8 a), and a cover net of the air inlet cover (6) is also made of an ultrafiltration membrane.

6. The integrated device for microalgae cultivation and harvesting and directly obtaining algae powder according to claim 4, wherein the integrated device is characterized in that: the PTC ceramic heating plate (13) is arranged on the outer side wall of the cylinder body (8 a).

7. The integrated device for microalgae cultivation and harvesting and directly obtaining algae powder according to claim 1, wherein the integrated device is characterized in that: the light reactor (1) comprises an outer cylinder (1 a) and an inner cylinder (1 b) which is communicated up and down, the bottom of the outer cylinder (1 a) is sealed, a cylinder cover (1 g) is arranged at the top, an exhaust hole is formed in the cylinder cover (1 g), the inner cylinder (1 b) is placed in the outer cylinder (1 a), a red blue LED lamp (1 c) is vertically arranged in the inner cylinder (1 b), the top end of the LED lamp (1 c) is fixed on the cylinder cover (1 g), a notch (1 e) is formed in the side wall of the inner cylinder (1 b) near the bottom, the bottom of the inner cylinder (1 b) is communicated with the bottom of the outer cylinder (1 a), a micro-bubble aerator (3) is arranged in the inner cylinder (1 b) and near the bottom, an air pipe of the micro-bubble aerator (3) penetrates the inner cylinder (1 b) and the outer cylinder (1 a) to be connected with an aeration fan (4), and a check valve (3 a) and an air inlet valve (3 b) are sequentially arranged on the air pipe along the air flow direction.

8. The integrated device for microalgae cultivation and harvesting and directly obtaining algae meal according to claim 7, wherein the integrated device is characterized in that: a plurality of groups of isolation fins (1 d) are arranged on the outer side wall of the inner cylinder (1 b) at intervals up and down, and the isolation fins (1 d) of each group are arranged at intervals along the circumferential direction of the inner cylinder (1 b).

9. The integrated device for microalgae cultivation and harvesting and directly obtaining algae meal according to claim 7, wherein the integrated device is characterized in that: the liquid outlet end (1 i) of the photo-reactor (1) is arranged at the bottom of the side wall of the outer barrel (1 a), and the liquid inlet end (1 h) of the photo-reactor (1) is arranged at the top of the side wall of the outer barrel (1 a).

10. The integrated device for microalgae cultivation and harvesting and directly obtaining algae powder according to claim 1, wherein the integrated device is characterized in that: the solar energy photovoltaic energy storage device is characterized by further comprising a storage battery (5) and a solar energy photovoltaic panel (2), wherein the charging end of the solar energy photovoltaic panel (2) is connected with the electric quantity input end of the storage battery (5), and the storage battery (5) is used for supplying power to the photoreactor (1), the microbubble aerator (3), the aeration fan (4), the drying fan (14) and the algae removal valve (7).