Closed pipeline type photosynthetic reactor

Abstract

The closed pipeline type photosynthetic reactor is used for culturing microalgae or other photosynthetic onganism. It has structure including light accepting reaction pipeline, algae liquid storing bottle and reactor driving system with windbag pump. The algae liquid storing bottle, the sucking pipe of the light accepting reaction pipeline, the windbag pump, the reflux pipe of the light accepting reaction pipeline are connected successively to form one algae liquid circulating loop, with side ventilating pipe being connected to the sucking pipe. The present invention has low cost and high microalgae yield and may be used in mass production.

Description

technical field [0001] The invention relates to a reactor for cultivating microalgae or other photosynthetic organisms. Background technique [0002] Photosynthetic reactor (photobioreactor), also known as photobioreactor, is used to efficiently cultivate microalgae or other photosynthetic organisms through the flow or agitation of algae liquid in a closed container to improve photosynthetic efficiency and yield. And at present in production commonly used open culture tank cultivation facility, adopts open large pond (cement, PVC board, compacted earth etc. form the bottom of the pond or the wall of the pond) to cultivate microalgae. Due to the closedness of the system, compared with the open culture tank, the photobioreactor has the following advantages: it can avoid or reduce the pollution of other algae or harmful organisms, maintain the culture state of single species or dominant species, and ensure the output and quality; The light energy utilization rate of the reacto...

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Problems solved by technology

[0003] The shortcomings of the photobioreactor are mainly manifested in: the closedness of the system leads to a large accumulation of oxygen and dissolved oxygen, which inhibits or destroys the growth and metabolism; the power system that makes the algae fluid stir or flow directly damages the algae; the condition control system and high cost of materials, thus limiting its scale-up and industrial application

[0004] At present, there are many standard photobioreactors, which can be divided into pipeline type, tank type, plate type, etc. from the shape of the photoreaction container. The light-receiving area and reaction volume are greatly increased, so it is easier to carry out large-scale production of microalgae than other systems, but there are still disadvantages such as power systems (such as centrifugal pumps, diaphragm pumps, etc.) that can easily cause direct damage to algae cells, and it is currently more recognized Although the air-lift reactor can use the lifting force generated by the gas rising in the pipeline to drive the circulation of the algae liquid, reducing the direct damage of the power system to the algae liquid, but because the pipeline reactor cannot be extended indefinitely, the pipeline system cannot be effectively eliminated. Oxygen accumulated in the medium, thus limiting the expansion of its culture scale

During the cultivation process of the airlift reactor, due to the large accumulation of oxygen, it is easy to form an air column that blocks the flow of the algae liquid and oxygen bubbles that adhere to the tube wall, which affects the normal reflux cycle and uniform light receiving of the algae liquid, especially Under strong light, it will damage and destroy the culture. At the same time, the large accumulation of dissolved oxygen in the pipeline will also inhibit, damage or even destroy the algae cells, and the growth efficiency needs to be improved.

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