Microalgae culturing device and microalgae culturing method

Abstract

The invention discloses a microalgae culturing device, which comprises an open runway pool, wherein the open runway pool is provided with a liquid outlet; the liquid outlet is connected with a liquid circulating pump, and is connected with a liquid inlet of a culturing liquid storage tank through the liquid circulating pump; the top of the culturing liquid storage tank is provided with a liquid outlet pipeline, so that a culture fluid can flow back into the open runway pool through the pipeline; and the bottom of the culturing liquid storage tank is provided with a gas distributor for introducing various CO2-containing gases for replenishing carbon for a microalgae culture fluid. By controlling the volume ratio and the circulating speeds of the culture fluid in the open runway pool and the culture fluid in the culturing liquid storage tank, the detention time of microalgae cells in the bright runway pool and the dark culturing liquid storage tank is adjusted, and bright and dark forced circulation of the microalgae cells is realized. By adopting the device and the method, the problems of poor bright and dark mixing of cells, low light energy utilization ratio and difficulties in charging gas and replenishing carbon in the culturing process of the conventional open runway pool are solved, the culturing efficiency, the growing rate and the area yield of microalgae are increased remarkably, and the investment and running costs of a mass microalgae culturing system are reduced.

Description

technical field [0001] The invention belongs to the field of microalgae cultivation, in particular to a device for large-scale cultivation of microalgae. [0002] The invention also relates to a method for large-scale cultivation of microalgae by using the above-mentioned device. Background technique [0003] Microalgae can effectively use light energy, CO 2 and inorganic salts to synthesize proteins, fats, carbohydrates and a variety of high value-added bioactive substances, which can be used to produce health food, food additives, feed and other chemicals through microalgae cultivation. Especially in recent years with the development of bioenergy technology, some oily microalgae can be used in saline-alkali land, desert, Marine aquaculture has the great advantage of not competing for land and people for food, and can use carbon dioxide in factory exhaust gas as a carbon source. Countries all over the world have taken it as a very important way to solve the shortage of bi...

AI Technical Summary

Problems solved by technology

Although the light absorption and photosynthesis time of algal cell photosynthesis is very short, generally only milliseconds or picoseconds, it is difficult to achieve from an engineering point of view

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