CN203238251U - Microalgae culture pond with novel aeration device - Google Patents

Abstract

The utility model discloses a microalgae culture pond with a new type of aeration device, which includes a runway pool and an aeration device, and is characterized in that the aeration device includes an aeration pipe and a pipe longer than the aeration pipe, so that There are multiple aeration pipes, the number of which is the same as that of the aeration pipes, and each of the aeration pipes is correspondingly arranged at one end of a pipe, and the aeration pipes are connected to gas pipelines; the runway pool A partition is arranged in the middle, and the aeration device is arranged in the runway pool on one side of the partition; the aeration device described in the utility model has a simple structure, and a longer pipe is arranged outside the aeration pipe to supply carbon dioxide gas. It provides space and time for mixing with algae liquid, which can greatly improve the utilization rate of carbon dioxide gas. The microporous aeration tube is used for more uniform aeration, and the generated bubbles are small, which is easier to absorb.

Description

Microalgae cultivation pond with new aeration device

technical field

The utility model relates to the field of microalgae cultivation, in particular to a microalgae cultivation pond with a novel aeration device.

Background technique

Microalgae are a kind of autotrophic plants widely distributed in land and ocean, rich in nutrients and high in photosynthetic utilization. The polysaccharides, proteins, pigments, etc. produced by cell metabolism make them useful in the fields of food, medicine, genetic engineering, and liquid fuels. Very good development prospects.

As we all know, microalgae is a single-celled lower plant. The growth of plants depends on photosynthesis. Photosynthesis is to convert carbon dioxide and water into organic matter by using photosynthetic pigments through light reaction and carbon reaction under the irradiation of visible light. And the biochemical process of releasing oxygen (or hydrogen) is the basis for the survival of the biological world. Therefore, carbon dioxide is an essential condition for the growth of microalgae.

In the large-scale cultivation of runway ponds, due to the open cultivation environment, carbon dioxide is introduced into the algae liquid in the form of gas. According to previous cultivation experience, it is found that the absorption rate of carbon dioxide is not very high, which greatly increases the cultivation cost and energy. In order to increase the absorption rate of carbon dioxide, it is necessary to find an aeration device that is economical, durable and has a high absorption rate.

In order to solve the above problems, the Chinese patent document CN201280471Y discloses an aeration device, which includes an air distribution device and a plurality of aeration pipes. The distance between adjacent aeration pipes is 80-300 mm, and there are at least 2000 aeration microholes per meter of aeration pipe. Compared with the original technology, the aeration device provided by this utility model has aeration micropores on the aeration tube, and at least 2,000 aeration micropores are provided on the aeration tube per meter, and the oxygenation efficiency is improved. , It can not only reduce the energy consumption of aeration, but also eliminate the blind area of aeration, make the concentration of dissolved oxygen in the sewage more balanced, and provide a relatively mild growth environment for microorganisms to remove various pollutants in the water more effectively and thoroughly.

Although the above-mentioned patent documents provide an aeration device with higher efficiency, due to the fact that the gas will rise rapidly under the action of buoyancy after leaving the aeration tube, the reaction time between it and water is too short to achieve sufficient mixing. There is still room for improvement.

Utility model content

The technical problem solved by the utility model is to provide a new type of aeration device, which can prolong the action time of gas and water, make the two fully mixed, and improve the utilization rate.

For this purpose, the utility model adopts the following technical solutions:

A microalgae culture pond with a new type of aeration device, comprising a runway pool and an aeration device, the aeration device includes an aeration pipe and a pipe with a length longer than the aeration pipe, and the aeration pipe is multiple, The number of the tubes is the same as that of the aeration tubes, and each of the aeration tubes is correspondingly arranged at one end of a tube, and the aeration tubes are connected to a gas pipeline; a partition is arranged in the middle of the runway pool, and the The aeration device is arranged in the raceway pool on one side of the partition. The aeration device can be provided with a plurality of them, all of which are fixedly installed in the raceway pool, and the aeration device is fixedly arranged at the bottom of the raceway pool, so that there is still enough gas after the gas is discharged from the pipe. Time to contact and mix with the algae liquid. The gas in the gas pipeline connected with the aeration pipe is carbon dioxide gas.

Further, the aeration device also includes a device fixing bottom plate, and the pipe is fixedly installed on the device fixing bottom plate. The device fixing bottom plate is also used to be connected with a fixing piece to fix the aeration device on the bottom of the runway pool.

Further, the tube is provided with a tube clamp, and the tube is fixedly installed on the fixed bottom plate of the device through the tube clamp.

Further, the aeration pipe is installed at the bottom of the pipe, and the length of the pipe is 5 to 15 times the length of the aeration pipe. The length of the pipe is longer than the length of the aeration pipe, which can fully prolong the mixing time of the carbon dioxide gas and the algae liquid, and improve the utilization rate of the carbon dioxide gas.

Further, the pipe length direction of the pipe is set in the same direction as the water flow in the runway pool, and the end provided with the aeration pipe is located in the upstream direction. It is convenient that once the algae liquid enters the pipeline, it can fully contact with the carbon dioxide gas emitted by the aeration tube under the action of the aeration tube, and the gas that is not fully mixed can continue to be mixed with the carbon dioxide gas in the process of moving downstream along the pipeline. algae fluid for fusion.

Further, the plurality of tubes are arranged parallel to each other. Since the tubes are relatively long, they can be arranged in parallel with each other to arrange as many tubes as possible in a small space, so that the efficiency of the aeration device can be maximized.

Further, the aeration tube adopts a microporous aeration tube. The microporous aeration tube is currently the most efficient aeration tube, and the use of the microporous aeration tube can further improve the utilization rate of carbon dioxide gas.

Further, the pipe is a PVC pipe. PVC pipe has good tensile and compressive strength, small fluid resistance, excellent corrosion resistance and chemical resistance, and it is also very convenient to obtain materials.

Further, the gas pipeline is provided with a valve upstream of the aeration pipe, and a flow meter is provided upstream of the valve. It can conveniently monitor and control the input amount of carbon dioxide gas, so as to control the pH value of the algae liquid within the optimum range for microalgae growth.

The beneficial effects of the utility model are as follows: the structure is simple, and a longer pipe is arranged outside the aeration pipe to provide mixing space and time for the carbon dioxide gas and the algae liquid, which can greatly improve the utilization rate of the carbon dioxide gas, and adopt microporous aeration The tube aeration is more uniform, and the bubbles produced are small, which is easier to absorb.

Description of drawings

The utility model will be described in further detail below according to the accompanying drawings and embodiments.

Fig. 1 is a schematic structural view of the microalgae cultivation pond described in the present invention.

Fig. 2 is a schematic structural diagram of the aeration device described in the present invention.

In the picture:

1. The main body of the runway pool; 2. Partition board; 3. Microporous aeration pipe; 4. PVC pipe;

Detailed ways

The technical scheme of the utility model will be further described below in conjunction with the accompanying drawings and through specific embodiments.

As shown in Figures 1-2, in this embodiment, a microalgae culture pond with a new type of aeration device described in the utility model includes a raceway pond and an aeration device, and the raceway pond includes a waist-shaped structure The raceway pool main body 1 and the partition plate 2 arranged in the middle of the raceway pool along the length direction of the raceway pool, the partition board 2 is fixedly installed on the bottom of the raceway pool, and it does not contact the pool wall of the raceway pool main body 1, The algal fluid in the raceway pool can circulate in the raceway pool; a scaffold is buckled above the raceway pool.

The aeration device includes a microporous aeration pipe 3 and a PVC pipe 4 whose length is ten times the length of the microporous aeration pipe 3. Each aeration device is provided with four PVC pipes 4 parallel to each other. The PVC pipes 4. It is fixedly installed on the fixed bottom plate 6 of the device through the pipe clamp 5, and each of the PVC pipes 4 is correspondingly provided with a microporous aeration pipe 3, and the microporous aeration pipes 3 are all arranged on the PVC pipe 4, the four microporous aeration tubes 3 are jointly connected to a carbon dioxide gas pipeline 7, a valve 8 is arranged on the carbon dioxide gas pipeline 7, and a flow meter 9 is arranged at the upstream position of the valve 8.

The aeration device is arranged at the bottom of the runway pool on one side of the dividing plate 2, and its setting direction is that the pipe length direction of the PVC pipe 4 on it is set in the same direction as the water flow direction in the runway pool, and the microporous aeration device is provided with A section of the air pipe 3 is located in the upstream direction. The lower surface of the fixed bottom plate 6 of the device abuts against the bottom of the raceway pool, and the upper surface abuts against the mounting column connected on the scaffold, thereby fixing the aeration device on the bottom of the raceway pool.

During the working process, the interior of the runway pool is filled with algae liquid, and circulates clockwise around the partition 2, and at this time, the valve 8 arranged on the carbon dioxide gas pipeline 7 is opened to supply air to the microporous aeration tube 3 , under the action of the microporous aeration tube 3, the carbon dioxide gas produces uniform small bubbles, and when the algae liquid flows into the PVC pipe 4, it will be fully mixed with the small bubbles to provide enough carbon dioxide gas for the growth of microalgae. Because the end of the PVC pipe 4 provided with the microporous aeration pipe 3 is located in the upstream direction, the algae solution entering the PVC pipe 4 will continue to flow downstream in the PVC pipe 4, and at the same time push the small bubbles of carbon dioxide that are not completely mixed in the PVC pipe 4. Internal movement, and continue to mix with the algae liquid.

Because the aeration device is arranged at the bottom of the raceway pool, when the small carbon dioxide bubbles are not completely mixed with the algae liquid in the PVC pipe 4, they are also at the bottom of the pool after moving out of the PVC pipe 4, and rise to the algae from the bottom of the pool. In the process above the liquid level, there is still a certain amount of time to mix with the algae liquid.

The carbon dioxide gas pipeline 7 is provided with a valve 8 and a flow meter 9, which can easily adjust the intake of carbon dioxide gas, thereby adjusting the pH value of the algae liquid. It can be seen from experiments that when the ventilation rate is 0.3m ³ /h, the pH The value is controlled within the range of 7.5-8.5, which is the most suitable PH value environment for the growth of microalgae, so 0.3m ³ /h is determined to be the best ventilation rate, so it is only necessary to adjust the intake rate of carbon dioxide gas to 0.3 through the valve 8 m ³ /h is enough.

It should be stated that the above-mentioned specific implementation methods are only preferred embodiments of the present utility model and the applied technical principles. Within the technical scope disclosed in the present utility model, any changes or changes that are easily conceivable by those skilled in the art Replacement should be covered within the protection scope of the present utility model.

Claims (9)

1. micro-algae culture pond with aeration device, comprise raceway pond and aerating apparatus, it is characterized in that, described aerating apparatus comprises that aeration tube and length is longer than the pipe of described aeration tube, described aeration tube is a plurality of, described pipe is identical with aeration tube quantity, and each described aeration tube is all corresponding to be arranged on tube interior one end, and described aeration tube connects gas pipeline; Described raceway pond middle part is provided with dividing plate, and described aerating apparatus is arranged in the raceway pond of described dividing plate one side.

2. the micro-algae culture pond with aeration device according to claim 1 is characterized in that, described aerating apparatus also comprises the device fixed base plate, and described pipe is fixedly mounted on the described device fixed base plate.

3. the micro-algae culture pond with aeration device according to claim 2 is characterized in that, is provided with pipe clamp on the described pipe, and described pipe is fixedly mounted on the described device fixed base plate by pipe clamp.

4. the micro-algae culture pond with aeration device according to claim 1 is characterized in that, described aeration tube is installed in the bottom of described pipe, and the length of described pipe is 5～15 times of described aeration tube length.

5. the micro-algae culture pond with aeration device according to claim 1 is characterized in that, the water (flow) direction in the pipe range direction of described pipe and the raceway pond arranges in the same way, and an end that is provided with aeration tube is positioned at updrift side.

6. the micro-algae culture pond with aeration device according to claim 1 is characterized in that, is arranged in parallel between described a plurality of pipes.

7. the micro-algae culture pond with aeration device according to claim 1 is characterized in that, described aeration tube adopts micropore aeration pipe.

8. the micro-algae culture pond with aeration device according to claim 1 is characterized in that, described pipe adopts pvc pipe.

9. the micro-algae culture pond with aeration device according to claim 1 is characterized in that, is provided with valve at the aeration tube upstream position on the described gas pipeline, and the upstream position of described valve is provided with under meter.

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