Overflow tilting novel microalgae culture system

Abstract

The invention provides an overflow tilting novel microalgae culture system. The culture system comprises an inclined plate subsystem and a microalgae solution circulation subsystem. The inclined plate subsystem contains an inclined plate for supporting a microalgae solution thin-layer, a support frame for supporting the inclined plate and an overflow device used for receiving a microalgae solution and supplying the microalgae solution to the inclined plate. The microalgae solution circulating subsystem contains a device used for conveying the microalgae solution to the overflow device and a collecting unit used for collecting the microalgae solution flowing off from the inclined plate device. The invention also relates to a microalgae culture method. According to the culture method, a microalgae solution is conveyed into an overflow groove through a microalgae solution conveying power source, and the microalgae solution overflows along the inclined plate into a microalgae accumulating groove under the effect of gravity, so as to realize microalgae culture. The culture system of the invention has a simple structure, is low-cost, is convenient for processing and manufacturing, and is simple to operate. What is more crucial is that the culture system has large unit-volume microalgae solution sunlight area and good sunlight illuminating angle so as to effectively enhance light use efficiency of microalgae cells and microalgae cell growth rate. Thus, low-cost, large-scale, high-density and efficient culture of microalgae is realized.

Description

Technical field [0001] The invention belongs to the technical field of microalgae biology, and relates to an overflow inclined novel microalgae culture system and a method for microalgae culture using the system. Background technique [0002] Microalgae are rich in protein, polyunsaturated fatty acids and carotenoids and other high value-added substances. At the same time, microalgae have the ability to absorb nitrogen / phosphorus and accumulate oil during cultivation. Therefore, microalgae have a wide range of applications in food, bait, feed, environmental protection and bio-energy. Especially in recent years in terms of bioenergy, microalgae are considered to be the most promising raw materials for the preparation of biofuels such as biodiesel; in addition, microalgae have great potential for carbon fixation and treatment of nitrogen / phosphorus-rich wastewater. [0003] The photobioreactor is the core device for photoautotrophic culture of microalgae. Currently, there are two t...

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Problems solved by technology

The microalgae culture system designed or developed by the above-mentioned researchers has increased the light-receiving surface area per unit algae liquid in the culture system to a certain extent, but the degree of improvement in the light-receiving surface area per unit algae liquid, the full use of space light, low-cost construction and scale There are deficiencies in chemical application and other aspects, and it is difficult to meet the requirements of low-cost, high-density and high-efficiency cultivation of microalgae

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