This project is located in Shehong City, Sichuan Province, with a biogas processing capacity of 24,000 Nm³/d. It uses biogas generated from the anaerobic treatment of Shede distillery wastewater as raw material. Through chelated iron desulfurization and pressure swing adsorption, the biogas is purified and upgraded to produce biomethane, which is supplied to Shede Wine Industry for brewing via the internal pipeline network. The project was selected into the "2023 China Typical Cases of Synergistic Effect in Pollution Reduction and Carbon Emission Reduction" at the 28th United Nations Climate Change Conference.