A pressure-differential open-pipe bioreactor for microalgae cultivation

Abstract

The invention provides a differential pressure type open pipeline bioreactor for microalgae culture. The two ends of a transparent elbow pipe are communicated with a transit accumulation cultivator Aand a transit accumulation cultivator B respectively; both the transit accumulation cultivator A and the transit accumulation cultivator B are provided with an inlet air pipe and a sterilizer, the upper end of the inlet air pipe in the transit accumulation cultivator A is provided with a booster air pump A and a gas filter A, and the upper end of the inlet air pipe in the transit accumulation cultivator B is provided with a booster air pump B and a gas filter B; both the outer bottoms of the transit accumulation cultivator A and the transit accumulation cultivator B are provided with an elastic telescopic bracket, the bottom of the elastic telescopic bracket at the bottom of the transit accumulation cultivator B is provided with a boosting desk, and cleaning holes are formed in the transparent elbow pipe. The efficient, energy-saving and open pipeline photobioreactor is constructed, which is unselective to sphere diameters of microalgae and convenient to wash, the key technical problemis completely addressed that an existing closed pipeline bioreactor for microalgae culture is difficult to clean, and a major breakthrough on a pipeline culture microalgae technology is made.

Description

technical field [0001] The invention relates to the technical field of microalgae cultivation, in particular to a differential pressure open pipe bioreactor for microalgae cultivation. Background technique [0002] 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. [0003] The large-scale cultivation of microalgae mainly includes open cultivation and closed cultivation. Open culture mainly includes raceway pools and cylindrical culture pools. The main defects of this method are low light energy utilization rate, low space utilization rate, easy to be polluted by algae, greatly affected by the outside world, and large water evaporation. The closed type mainly means that there is a closed trans...

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Problems solved by technology

[0008] To sum up, there are still some technical disadvantages to be solved in the existing closed pipeline technology, including complicated cleaning and wall-attachment treatment methods in the pipe, and high cost. The existing technology is driven by a water pump, and the microalgae are mechanically damaged by the impeller , so the diameter range of the cultured algae is narrow; the gas exchange between the tube and the air is less, which is easy to cause metabolic poisoning to the microalgae; when the microalgae is cultivated in an open way, the evaporation of the water source is large, and water is wasted, which is easy to pollute protozoa and miscellaneous Algae, it is difficult to collect algae, and it is difficult to separate the target microalgae from miscellaneous algae and protozoa at the same time; the existing technology of water pump drive is continuous work, which consumes a lot of energy

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