Divergent cold light source vertical microalgae culture photoreactor

Abstract

The invention discloses a divergent cold light source vertical microalgae culture photoreactor and belongs to the field of biotechnology. The invention adopts a technical scheme that: the divergent cold light source vertical microalgae culture photoreactor comprises a photobioreactor (1), a divergent cold light source (2), a reflecting material (3) and other parts, and is characterized in that: the photobioreactor (1) is an ellipsoidal container made of a transparent material, the bottom of the photobioreactor (1) is in a circular arc shape, and the photobioreactor (1) is used for culturing microalgae; the divergent cold light source (2) is a power-driven electric storage light source, can emit light around uniformly, and after being placed in the photobioreactor (1), performs irregular motion due to constant impact on the wall of the reactor in a motion process or moves along a preset track under the control of an internal program in the light source; and the reflecting material (3) is paved at the bottom of the photobioreactor (1), a new light source can be formed after reflection, and thus, the utilization rate of light is increased. The photobioreactor adopts a spherical light source capable of emitting light around, the light source can move to any part in the reactor to make sure the light intensity and illumination time in the reactor are consistent and eliminate dead corners of illumination; the motion of the spherical light source in the reactor realizes the stirring of microalgae culture water, ensures the culture solution and bacterial distribution in the reactor is uniform, contributes to the balanced absorption of nutrients by the microalgae, reduces wall growth of cells and greatly improves the efficiency of microalgae culture; and the bottom of the reactor is covered with the reflective material, the utilization rate of light is improved, and the energy consumption is lowered.

Description

technical field [0001] The patent of the invention belongs to the field of biotechnology, and relates to a divergent cold light source three-dimensional microalgae cultivation photoreactor, which is specifically applied to microalgae cultivation and other photoreactors with similar functions. Background technique [0002] In recent years, microalgae have achieved certain results in the preparation of biodiesel and deep nitrogen and phosphorus removal of sewage, and have received more and more attention. According to the different culture methods of microalgae, it can be roughly divided into three types: open pond system autotrophic culture, closed photobioreactor autotrophic culture and fermenter heterotrophic culture. In a closed photobioreactor, usually the light source of the photobioreactor is either arranged inside the reactor, or outside the reactor, or both inside and outside. Although the structure, form, and size of the light sources are different, they have one th...

AI Technical Summary

Problems solved by technology

Although the structure, form, and size of the light sources are different, they have one thing in common, that is, they are all fixed light sources, most of the lights are not used, and the waste is serious

In addition, in the reactor without external stirring device, the feed liquid is basically in a static state, and the light conditions received by the microalgae at various parts are quite different, and the quality of the same batch cannot be stabilized; while in the reactor with stirring device, although Stirring makes the feed liquid in the reactor more uniform, which improves the light uniformity of the microalgae in the reactor to a certain extent, but consumes a lot of energy and costs.

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