Special photo-biological reactor system for driving microalgae cultivation by multi-stage potential energy differences

Abstract

The invention relates to a photo-biological reactor belonging to the field of bioengineering, particularly to a special photo-biological reactor system for driving microalgae cultivation by multi-stage potential energy differences. The special photo-biological reactor system comprises photo reactors, an air inlet device and a circulating power source, wherein air inlets, air outlets, liquid inlets and discharge openings are formed in the photo reactors; the photo reactors comprise column reactors which are longitudinally arranged, are distributed at intervals and are successively arrayed from high heads to low tails, light can penetrate through the side walls of the reactors, and light sources are arranged outside the reactors; a linear driving mechanism drives the reactors to make longitudinal reciprocating movement; each liquid-material inlet-outlet pipeline is connected to a position between the discharge openings and the liquid inlets of adjacent reactors; the pumping device is communicated with the discharge openings of the head reactor and the tail reactor through pipelines. According to the special photo-biological reactor system disclosed by the invention, the external circulation of the column reactors, a fluid infusion and acquisition device are organically combined, and the input of power is reduced as possible by utilizing potential energy differences. Compared with the prior art, the special photo-biological reactor system has the advantages that the pipelines are obviously simplified, the manufacturing cost of equipment is reduced, automatic control is easy to realize, and besides, the production efficiency is improved.

Description

technical field [0001] The invention relates to a photobioreactor in the field of bioengineering, in particular to a special photobioreactor system for microalgae cultivation driven by a multi-level potential energy difference. Background technique [0002] Microalgae are a class of low-level single-celled plants widely distributed in land and sea. Microalgae provide energy through photosynthesis, absorb carbon dioxide, metabolize oil, protein, polysaccharides and a variety of valuable secondary metabolites, and release oxygen at the same time. The photosynthetic efficiency of microalgae is significantly higher than that of terrestrial plants, and it also has high carbon sequestration efficiency and growth rate. The types of microalgae are very rich, and the growth environment is quite different. Therefore, its diverse composition and genes provide rich screening materials for different applications. In addition, microalgae, as single-celled plants, have a short growth per...

AI Technical Summary

Problems solved by technology

The main representative of the former is the runway pool, which is characterized by simple structure, low investment, and low operating cost, and has been widely used in actual production. However, the runway pool has obvious disadvantages, such as easy pollution, low light energy utilization, and poor controllability etc. and therefore only suitable for limited species of algae (e.g. Spirulina, Salina)

Closed photobioreactors mainly include column type, pipeline type, flat plate type and hanging bag type, all of which are made of transparent materials isolated from the outside world. Therefore, it is especially suitable for high value-added algae cultivation, but the initial investment cost is high

[0006] At present, closed photobioreactors mostly adopt intermittent production, the specific growth rate of microalgae is low, and the equipment must be cleaned and disinfected every time it is inoculated, and the production efficiency is low

Some external circulation column photobioreactors can be used for continuous cultivation, but relying on water pumps to provide circulation power, resulting in high energy consumption and high production costs

In addition, closed photobioreactors mostly use a single light intensity and ventilation rate, which cannot provide optimal conditions according to the growth status of microalgae

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