POSITIVE-ENERGY PHOTOBIOREACTOR DEVICE AND METHOD USING SUCH A PHOTOBIOREACTOR

摘要

The invention relates to a method for treating an effluent (311, 313), characterized in that it comprises the steps consisting in: a. preparing an aqueous culture medium comprising microalgae, carbon dioxide (311) and mineral nutrients; b. injecting said culture medium into a closed circuit (135) exposed to light; c. measuring the concentration of microalgae in said culture medium in circulation; d. when the concentration of microalgae reaches a threshold value, harvesting an amount of the culture medium in circulation; e. separating (450) the water (414) and the microalgae (415) from said amount; f. using the microalgae recovered as a source of energy. The invention also relates to a device for carrying out this method.