https://www.yhrbiogas.com/products/large-scale-biogas-project/ Large Scale Biogas Project For the large biogas plant, biogas can be produced by treating manure in large farms or treating straw, napier grass and other crop straws. The big biogas output is more than 10,000 m³ per day, which can be used for power generation or purified into natural gas. The generated solid digeatate can be used to make organic fertilizer, forming an agricultural ecological cycle during large scale biogas production.