Photobioreactor

Abstract

The invention discloses a photobioreactor which aims at providing a set of solution scheme for cultivating microalgae with simple production, convenient disassembly and high efficiency. The photobioreactor comprises a buffer / gathering system, a detecting device, a reaction region and a gas exchange device, wherein the buffer / gathering system is a transparent drum with a taper-shaped bottom and is connected with two pipelines respectively used for cycle cultivation and microalgae collection; the detecting device is introduced from the upper part of the buffer / gathering system; the reaction region comprises a plurality of circular transparent photoreaction tubes; and the gas exchange device is connected with the inner part of the reaction region. The photobioreactor realizes the circulation of a cultivation system through a peristaltic pump, adjusts the ventilation of each photoreaction tube through a gas pump and a plurality of gas valves, has simple and convenient operation and high mass transfer efficiency, and is suitable for fast cultivation of microalgae with a large number.

Description

Technical field [0001] The invention relates to the field of photobiological reactions, and in particular to a photobioreactor device for cultivating microalgae. Background technique [0002] The use of photobioreactors to produce microalgae is a hot research topic at home and abroad, and people have tried various design solutions over the years. Since the 1950s, people have begun to study the use of closed photobioreactors for microalgae culture. The development of this field was very slow from the 1950s to the 1980s. In 1983, Pirt S.J. et al. established the design and operation theory of photoreactors. and computer control devices. Later, research work was carried out in Israel, Italy, Spain, Japan, the United States, France, Singapore, Canada and other countries. In order to reduce the light path to increase the light energy received by a single cell, fully mix to ensure the effective supply of optimal light intensity, and enhance gas exchange, the currently designed cl...

AI Technical Summary

Problems solved by technology

First of all, the buffer water storage part of the tubular reactor will form a dark area, usually accounting for 10-15% of the total volume. In this dark area, the microalgae will absorb oxygen and release carbon dioxide, no longer carry out photosynthesis, but start respiration instead, so The biomass of microalgae often can only reach 85-90% of the theoretical maximum; secondly, high concentrations of oxygen molecules will accumulate in the culture solution, thereby inhibiting photosynthesis; thirdly, the impeller of the pump in the tubular reactor will generate shear force , causing damage to microalgal cells

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