ROTATING DISC TYPE PHOTOBIOREACTOR FOR MICROALGAE LARGE-SCALE CULTIVATION

摘要

Provided is a rotating disc type photobioreactor for microalgae large-scale cultivation, comprising a reactor main body, a rotating shaft (5) throughout the entire reactor main body, rotating discs (4) vertically fixed on the rotating shaft (5) at intervals, a driving motor (1), a transmission system (2), an air pipe (6) provided at the bottom of the reactor, a carbon dioxide inlet valve (8), a carbon dioxide source (7), a water inlet (9), and a water outlet (10). The rotating discs (4) are partially submerged in a culture solution and partially exposed to the air. The driving motor (1) drives the rotating discs (4) to rotate slowly via the transmission system (2), so that microalgae cells adhered to and grown on the rotating discs (4) are alternatively fed into a liquid phase and a gas phase. The air pipe (6) is in communication with the carbon dioxide source (7) outside the reactor via the carbon dioxide inlet valve (8). The reactor is simple in structure and is convenient for operations such as inoculation, harvesting and the like. It takes a small area, has a modular design, is easy to amplify, and is suitable for the large-scale production of microalgae biomass and microalgae secondary metabolites. It is also suitable for removal of nutrient substances such as nitrogen and phosphorus in sewage.