Advances in Resource Utilization of Livestock and Poultry Digested Biogas Slurry—Taking Concentration Method and Flocculation Method as an Example

The expansion of livestock and poultry breeding has resulted in an increase in the amount of biogas slurry treated by anaerobic digestion. As a result, research on the resource utilization of biogas slurry has become a popular topic. This article conducts a literature search to analyze and summarize the development of biogas slurry resource treatment technology both domestically and internationally. It also examines the risks and challenges associated with the traditional biogas slurry return mode by analyzing the physical and chemical properties of biogas slurry. Additionally, it focuses on the current application status of membrane concentration technology and flocculation and sedimentation technology in the treatment of biogas slurry resources. By analyzing the current situation, the article provides a future development direction for the utilization of biogas slurry resources.