The project is located in Xiangshan County, Ningbo City, Zhejiang Province. In the process of biogas desulfurization, the project adopts a combined process of wet desulfurization and dry desulfurization. In this phase of the project, a 100-ton/day food waste treatment line, a 200-ton/day kitchen waste treatment line, a 120-ton/day fecal waste treatment line, and a 600-ton/day sewage treatment line were constructed. One set of biogas storage and purification system was purchased as supporting equipment. Among them, the volume of the biogas holder is 3000 m³, the scale of the biogas purification equipment is 1200 Nm³/h, and the scale of the torch is 2000 Nm³/h.