Patent ID: 8986985
Filing Date: 2015-03-24
Classification: C12M

Abstract:
1. A photobioreactor for cultivation of microalgae or cyanobacteria comprising: two parallel rows of posts and two parallel rows of inclined supporting angles installed on said posts; said posts with said supporting angles play a role of a supporting unit of said photobioreactor; a shallow closed trough, which fulfils a role of a microalgae or cyanobacteria photo-cultivation chamber; said shallow closed trough is arranged on said supporting unit and said shallow closed trough comprises in turn following parts: an elongated flexible polymer film; the middle longitudinal section of said elongated flexible polymer film fulfils a role of the bottom cover of said shallow closed trough; a bank of translucent flat rigid members and auxiliary terminal flat rigid members, which are abutted in-line with a small inclination to the horizontal plane and placed above said elongated flexible polymer film with supporting by said supporting angles; at least said translucent flat rigid members are provided with longitudinal spacers installed on their undersides; lateral longitudinal sections of said elongated flexible polymer film are bent round edges of said translucent flat rigid members and said auxiliary terminal flat rigid members, and said lateral longitudinal sections of said elongated flexible polymer film are locked with flat longitudinal zones on the upper surfaces of said flat translucent flat rigid members; terminal sections of said shallow closed trough are formed by application of flexible polymer sheets in such a way, that said flexible polymer sheets overlap from above said auxiliary terminal flat rigid members and, additionally, certain sections of said translucent flat rigid members, which are adjacent to said auxiliary terminal flat rigid members; in such a way, said flexible polymer sheets overlap as well areas of said lateral longitudinal sections of said elongated flexible polymer film, which are situated under said flexible polymer sheets; said overlapped areas of lateral longitudinal sections are joined with said flexible polymer sheets by plastic welding with formation of two terminal sleeves of said shallow closed trough; the internal upper edges of said terminal sleeves are sealed with the upper surfaces of said translucent flat rigid members, which are adjacent to said auxiliary terminal flat rigid members; inlet and outlet ports for delivery of a gaseous medium containing CO.sub.2 and an aqueous suspension of microalgae or cyanobacteria into the internal space of said shallow closed trough and withdrawal of said gaseous medium and said aqueous suspension of microalgae or cyanobacteria from it; said inlet and outlet ports are formed by plastic welding in said terminal sleeves; two headers, which are established externally to said shallow closed trough; said headers are in fluid communication with said inlet and outlet ports; said first header serves for delivery of said gaseous medium containing CO.sub.2 and said aqueous suspension of microalgae or cyanobacteria into said internal space of said shallow closed trough, and said second header serves for withdrawal of said gaseous medium and an aqueous suspension of microalgae or cyanobacteria from the internal space of said shallow closed trough.