Microalgae cultivation device and method capable of controlling biological concentration

Abstract

The invention discloses a microalgae cultivation device and method capable of controlling the biological concentration, and relates to microalgae cultivation. By use of the characteristics that part of microalgae, such as spirulina, mat algae and aphanizomenon, floats up and is gathered during stewing and is uniformly distributed during ventilation, a reactor is designed to comprise two parts, namely a growing region and a stewing region; the microalgae in the growing region is continuously collected to the stewing region through overflow of a liquid falling pipe; meanwhile, an isometric culture medium containing non-used nutritional substances flows back into the growing region through a liquid conveying device (a pump), a liquid extraction pipe and a liquid drainage pipe and then is continuously used. Within a certain range, the aims of controlling the biological concentration of the growing region and optimizing light distribution are fulfilled by controlling the reasonable collection amount of the microalgae; organic combination of efficient cultivation and continuous collection of the microalgae is realized; the productivity of the microalgae is improved.

Description

technical field [0001] The invention relates to microalgae cultivation, in particular to a microalgae cultivation device and method capable of controlling biological concentration. Background technique [0002] As a renewable energy that can replace chemical energy and reduce carbon dioxide emissions, microalgae is considered a very promising way of biological carbon sequestration. During the batch culture of microalgae, the biomass continues to accumulate, and the light transmittance decreases exponentially. The microalgae that are far away from the incident light do not have enough light for photosynthesis, resulting in a decline in productivity. Common solutions include optimizing light source distribution and reducing bioconcentration. For example, the Chinese Patent Publication No. CN106701532A invented the LED microalgae combination culture device, so that all directions of the microalgae culture vessel can uniformly receive the irradiation of LED lights with differen...

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Problems solved by technology

For example, the Chinese Patent Publication No. CN106701532A invented a LED microalgae combination culture device, so that all directions of the microalgae culture vessel can receive the irradiation of LED light with different wavelengths uniformly, creating efficient and high-quality culture conditions, and this method causes additional energy consumption. Cost of production

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