Positive displacement conveying tube type photobioreactor

Abstract

The invention provides a positive displacement conveying tube type photobioreactor which is composed of a positive displacement transmission system, a photosynthetic reaction system and supporting accessories.The positive displacement transmission system is composed of a gear, a transmission shaft, a motor, a sealing plug, a chain, an inlet cone and an upper water tube, wherein the gear is driven to rotate by the motor, an alga solution in the upper water tube is conveyed into the photosynthetic reaction system in a sectioned and sealed mode through the sealing plug via chain transmission, and a power source is provided for circulation of the alga solution.The photosynthetic reaction system comprises photosynthetic reaction tube sections, a water distribution trough, a water trough, a connecting tube and a water outlet tube.Unit combination rotors are installed in the photosynthetic reaction tube sections, and a reaction site is provided for a photosynthetic reaction of microalgae.The supporting accessories include a motor rack, a gear supporting plate and a supporting frame, and support and fix the whole system.According to the positive displacement conveying tube type photobioreactor, microalgae cells are protected against harm of pump shearing force, and high-density culture of microalgae can be easily achieved; the number of the photosynthetic reaction tube sections connected to the water distribution trough can be adjusted according to flow, the flow speed and the culture scale, the structure is flexible, and adaptability is high.

Description

Technical field [0001] The invention relates to a photobioreactor for artificial cultivation of microalgae, in particular to a tubular photobioreactor for positive displacement conveying, and belongs to the technical field of microalgae biology. Background technique [0002] Microalgae are primitive plants with the highest photosynthetic efficiency, and their yield per unit area is dozens of times higher than that of crops. They are the fastest growing plants in nature. Algae, especially single-celled microalgae, can effectively use light energy, carbon dioxide and inorganic salts to synthesize proteins, oils, carbohydrates, and a variety of high value-added biologically active substances. However, the microalgae directly obtained from nature cannot be used for the extraction of high value-added products, and artificial large-scale cultivation is still needed to obtain raw materials for production. The high-density cultivation of microalgae is the key to the comprehensive develo...

AI Technical Summary

Problems solved by technology

The combined rotor of the unit can significantly promote the culture density of microalgae, but in this system, a pump must be used to realize the circulation of the algae liquid. If you choose a centrifugal pump, an axial flow pump, etc., it will cause shear damage to the microalgae cells. Choose a peristaltic pump. There will be no shear force, but the flow rate is too small to be applied to the large-scale cultivation of microalgae

Therefore, the choice of the pump seriously restricts the performance of the intelligent dimming self-cleaning tubular photosynthetic bioreactor system

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