Overwater enclosure type microalgae culture device and method

Abstract

The invention relates to an enclosure type microalgae culture device and method. The device comprises an annular floating bed and an enclosure, wherein the enclosure is embedded in the floating bed; one side of the enclosure is connected with one side of the inner ring of the annular floating bed through a connecting shaft, so that the enclosure can rotate around the connecting shaft; and a connecting rope is tied to each of the other three sides of the enclosure, so that the enclosure can be tied to the corresponding sides of the inner ring of the annular floating bed. The method for culturing microalgae by using the device comprises the steps of: firstly, putting the device into a polluted water body, wherein one end of the enclosure, opposite to the connecting shaft, freely drops into water, and then the connecting ropes are tightened up, so that the polluted water body enters the enclosure; and then sterilizing the water body in the enclosure, killing insects, adding a culture medium to culture microalgae, and collecting the microalgae water body after the microalgae are cultured for 5 to 7 days and the concentration of chlorophyll a reaches 1,000mu g / L. By combining the benefits of simple microalgae culture, carbon dioxide absorption, water body purification and the like, the microalgae culture cost is remarkably reduced.

Description

technical field [0001] The invention belongs to the technical field of microalgae cultivation, and in particular relates to a water enclosure type microalgae cultivation device and a cultivation method. Background technique [0002] For nearly a century, the world's population has grown rapidly, industry has developed rapidly, and resource consumption has increased sharply. On the one hand, fossil fuels represented by oil and coal are over-exploited and almost exhausted, and energy shortage has become a major problem in today's society and in the future; Since then, the level of CO2 concentration and global temperature have increased significantly, which has intensified the global greenhouse effect and led to frequent occurrence of extreme and severe weather. Therefore, it is imperative to find new energy sources that are sustainable, renewable and environmentally friendly. [0003] The shortage of water resources and water environment problems are also severe tests face...

AI Technical Summary

Problems solved by technology

The current microalgae culture technology is mostly focused on the photoautotrophic system, including outdoor open culture and various photobioreactors, which are mainly carried out on land, which consumes water, land, energy, and equipment, which increases the cost of microalgae. The cost of cultivation has become the main bottleneck of its large-scale production

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