Based on the imbalance of C/N ratio and alkalinity in the subsequent denitrification and dephosphorization of livestock manure anaerobic digester, team member, professor Ping Li, established a controlled mathematical model in the nitrogen and phosphorus removal process and electronic balance measurement process of anaerobic digestion solution, developed a biochemical treatment technology of electronic measurement balance coupling control biochemical treatment for anaerobic digester of livestock and poultry breeding. This research realized high efficiency denitrification and dephosphorization and standard discharge of anaerobic digester without adding external carbon source and basicity, and provided a high efficient and economic solution for livestock and poultry pollution governance.