BIOGAS UTILIZATION METHOD, BIOGAS UTILIZATION SYSTEM AND BIOGAS

摘要

To provide a biogas utilization method that can efficiently utilize a methane fermentation gas as a fuel gas, a biogas utilization system for implementing the biogas utilization method, and biogas used for the biogas utilization method and the biogas utilization system.SOLUTION: The biogas utilization method using a secondary biogas generated from a culture tank as a fuel gas comprises a step of supplying a primary biogas produced by methane fermentation into the culture tank of algae to culture the algae, the biogas utilization system comprises a primary biogas generating device, a secondary biogas generating device and a fuel gas utilization apparatus, and the biogas comprises a predetermined composition.SELECTED DRAWING: Figure 1