| 摘要 |
The present invention relates to a system and a method for culturing microalgae using wastewater. The microalgae culturing system using wastewater according to the present invention comprises: a disinfection processing unit which removes microorganisms in the wastewater which hinder the growth of the microalgae when the aeration tank inlet water of a sewage treatment plant or the wastewater which is composed of discharged water of a livestock excretion treatment plant flows in; a flow control unit which controls the concentration of organic pollution which is included in the discharged water which passes through the disinfection processing unit to suit the growth environment of microalgae; a microalgae culturing solution injecting unit which injects culturing solution for the growth of microalgae into the wastewater which passes through the flow control unit; microalgae culturing equipment which increases and cultures the microalgae by using the wastewater which passes through the microalgae culturing solution injecting unit; and a biomass producing unit which produces biofuel which includes bio-diesel or bio-ethanol by concentrating and refining microalgae of high density which is cultured in the microalgae culturing equipment. Thereby the present invention is configured to supply organic pollution such as the aeration tank inlet water of a sewage treatment plant or the discharged water of a livestock excretion treatment plant to the microalgae culturing solution of the microalgae culturing equipment and, through the composition, increase the efficiency of treatment for the organic pollution while reducing microalgae culturing costs for obtaining biomass by not only massively increasing and culturing microalgae of high density and reducing the pollution of wastewater by removing organic pollution (for example, nitrogen, phosphorus, etc.) through the increased microalgae, but also utilizing the microalgae of high density which is massively cultured through the growth in the production of biofuel. |
