Tangential casing built-in aeration photo-bioreactor applicable to micro algae high-efficiency culture

Abstract

The invention discloses a tangential casing built-in aeration photo-bioreactor applicable to micro algae high-efficiency culture. The tangential casing built-in aeration photo-bioreactor comprises a transparent tangential casing, a liquid inlet and outlet structure and an air inlet and outlet structure, wherein the transparent tangential casing comprises a transparent outer tube and a built-in transparent perforated aeration tube; the two ends of the transparent tangential casing are provided with flanges; the transparent outer tube and the built-in transparent perforated aeration tube are sealed through the flanges; one end of the transparent outer tube is provided with a liquid inlet, and the other end of the transparent outer tube is provided with a liquid outlet for feeding culture solution into the transparent outer tube and discharging the culture solution out of the transparent outer tube; one end of the built-in aeration tube is provided with an air inlet tube, and the other end of the built-in aeration tube is provided with a high-pressure exhaust valve; the side wall of the built-in aeration tube is provided with aeration holes; and an exhaust tube is arranged above the transparent outer tube. The tangential casing built-in aeration photo-bioreactor has the advantages of a columnar photo-bioreactor; not only the heat transfer and mass transfer are enhanced but also light-dark cycle is promoted by using aeration turbulent flow; and the pH (Potential of Hydrogen) of the culture solution is dynamically adjusted through CO2 content in ventilation, so that the culture environment of micro algae is improved.

Description

technical field [0001] The invention belongs to the field of renewable bioenergy, and relates to the cultivation technology of oil-producing and carbon-fixing microalgae, and more specifically, relates to a reactor with a built-in aeration tangential casing that can enhance gas-liquid mass transfer and light energy utilization The closed semi-continuous culture device can be used to cultivate microalgae, produce related products or provide aquaculture bait, etc. Background technique [0002] Energy crisis, greenhouse effect and environmental pollution make the replacement of fossil energy inevitable. Numerous studies have shown that algal organisms have great potential in efficient carbon sequestration to produce biofuels. According to literature reports (Kong Weibao, Hua Shaofeng, Song Hao, Xia Chungu. Progress on biodiesel production using microalgae[J]. Chinese Oils and Fats 2010;35:51-56), microalgae can also efficiently fix carbon while synthesizing oil , organisms on...

AI Technical Summary

Problems solved by technology

Further analysis showed that, as described in Table 1, the tubular photobioreactors usually have CO 2 Lack of timely replenishment, increased pH, poor gas-liquid mixing effect, oxygen inhibition caused by the accumulation of dissolved oxygen (DO), and low light efficiency caused by enlarged tube diameters restrict the further expansion of the cultivation scale to a certain extent.

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