Method and special device for treating organic wastewater by combination of microbial fuel cell and microalgae culture

The invention relates to a wastewater treatment technology, in particular to a method for treating organic wastewater by the combination of a microbial fuel cell and microalgae culture. The method comprises the following steps of: generating electric energy while organic substances, nitrogen and phosphorus in wastewater are removed through the microbial fuel cell, introducing the wastewater treated by the microbial fuel cell into a photobioreactor and culturing microalgae, and performing further continuous treatment by using the microalgae until the wastewater obtained after treatment meets the discharge standard. The method can be widely used for the treatment of the organic wastewater, improves the treatment effect of the wastewater, ensures that the electric energy and biomass energy which are obtained can compensate the cost of wastewater treatment, provides a novel way for the effective treatment of the organic wastewater, and has an important significance for saving energy, reducing emission and protecting environments.