Patent ID: 8895289

Claim:
A photochemical process adapted to breed, produce, or hydrocultivate microorganisms, the process comprising: conveying a reaction medium in a reactor having at least one reactor element that includes an inlet and an outlet at an upper reactor edge, two parallel chambers in fluid communication at a bottom of the chambers, and the inlet being coupled to one of the two parallel chambers and the outlet being coupled to the other of the two parallel chambers, such that the reaction medium is conveyed in the reactor in a meander-shaped way that includes moving the reaction medium along a direction that is perpendicular to or inclined at an angle to an imaginary horizontal plane, wherein, during the conveying, the reaction medium: moves in the reactor at least once along a first direction defined as one of a top down direction and a direction of gravity; and moves in the reactor at least once along a second direction defined as one of a bottom up direction and against the direction of gravity; and introducing into and removing from the reactor the reaction medium in a continuous manner without pressure and freely under atmospheric pressure and while exposed to the atmosphere.