Airlift photobioreactor for microalgae culture

Abstract

The invention discloses an airlift photobioreactor for microalgae culture, and belongs to the technical field of biological culture of microalgae. The photobioreactor includes a cylinder body, a culture liquid inlet, a culture liquid outlet, a guide cylinder, an air distributor, a light source, a sieve plate and an overflow mouth, wherein the top of the cylinder body is a gas-liquid separation zone, the guide cylinder is a hollow type, and is installed inside the cylinder body, and air outlets are evenly distributed inside the guide cylinder; nozzles are arranged at the air outlets, multiple gas outlets are evenly formed in the exterior of the guide cylinder along the circumference of the guide cylinder, and the light source is installed inside the wall of the guide cylinder; the air distributor is arranged at the bottom of the guide cylinder, the sieve plate is arranged inside the cylinder body, and the sieve plate is arranged along the height of the cylinder body; and the overflow mouth is formed in the gas-liquid separation zone. Through the photobioreactor, not only can the utilization rate of light and CO2 in the system be improved effectively, but also microalgae can be prevented from sticking to the wall effectively, the photobioreactor is suitable for culture of multiple floating microalgae of different scales, and is suitable for market promotion and application.

Description

technical field [0001] The invention belongs to the technical field of microalgae biological cultivation, and relates to an air-lift photobioreactor for microalgae cultivation. Background technique [0002] Photobioreactor (PBR) is a kind of device that can be used to cultivate tissues, cells or photosynthetic microorganisms with photosynthetic ability. At present, it mainly refers to the photoautotrophic system for cultivating microalgae cells, which is the basis for high-density and large-scale cultivation of microalgae. High light energy utilization is the main feature of photobioreactors, and it can be used for long-term continuous or semi-continuous culture. Therefore, photobioreactors can cultivate photosynthetic organisms at high density and obtain larger unit area and volume of organisms. quantity. Due to the diversity of functions of microalgae and the wide range of uses, photobioreactors have a wide range of application prospects. An important part of technology...

AI Technical Summary

Problems solved by technology

However, the problem of microalgae adherence to the built-in light source is very serious, and this type of reactor requires artificial lighting system and stirring system, which increases energy consumption, and it is difficult to control the cultivation temperature in the reactor, and it is not suitable for outdoor expansion cultivation.

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