Sleeve-type photo-bioreactor

Abstract

The invention discloses a sleeve-type photo-bioreactor comprising a pipe fitting and flanges respectively arranged at the two ends of the pipe fitting, wherein a liquid inlet pipe is arranged on the flange at one end of the pipe fitting, and a liquid outlet pipe is arranged on the flange at the other end of the pipe fitting; the pipe fitting is a transparent sleeve and comprises a transparent outer pipe and a transparent aeration pipe which is arranged in the transparent outer pipe and is coaxial with the transparent outer pipe; an exhaust pipe is arranged on the top of the transparent outer pipe, and a row of aeration holes are formed along the axial direction on the pipe wall of the transparent aeration pipe and are positioned on the pipe wall of the oblique lower part of the transparent aeration pipe; and an air inlet pipe is arranged at one end of the transparent aeration pipe. The photo-bioreactor disclosed by the invention can overcome the defects and shortcomings of the conventional photo-bioreactor, is capable of intensifying the mixing of gas and liquid, adjusting pH, timely replenishing CO2 and discharging dissolved oxygen (DO) and improving the illumination efficiency of a large-diameter reactor, and can be applied to the large-scale culture such as the efficient cultivation of microalgae, the production of relative products and the supply of aquaculture baits.

Description

technical field [0001] The invention relates to a bioreactor in microalgae cultivation technology, in particular to a closed continuous culture device with a built-in aeration tube that can enhance gas-liquid mass transfer and light energy utilization in the reactor. Background technique [0002] At present, the development of microalgae energy has become a direction to solve energy problems. Compared with other plants, microalgae have higher growth efficiency, faster growth cycle and CO 2 Fixed ability. In terms of oil synthesis, microalgae have the advantages of high photosynthetic efficiency, high oil content, short growth cycle, and high oil area yield. The fatty acid content of higher plant seeds is 15%-20% of dry weight, and most algae contain About 30% to 50% lipids, some even as high as 85%. In fixed CO 2 On the one hand, microalgae can fix a large amount of CO during photoautotrophic culture 2 , organisms on the earth can fix 8×10 10 t carbon, produced 14.6×10 ...

AI Technical Summary

Problems solved by technology

However, the traditional tubular photobioreactor still has CO 2 Untimely replenishment, poor gas-liquid mixing effect, easy accumulation of dissolved oxygen (DO), low light efficiency due to enlarged pipe diameter, etc. These shortcomings restrict the further expansion of the tubular photobioreaction system to a certain extent.

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