Commissioning and Operation of Sludge Digestion System in Taoziwan WWTP

A single-stage, mesophilic anaerobic digestion process is adopted in the sludge digestion system at the Taoziwan WWTP in Yantai City. After idle for a long period, it underwent rectification, commissioning, and official operation, achieving sludge reduction and harmless treatment. The process flow of the anaerobic digestion system was introduced, focusing on the analysis of construction, process and firefighting rectification before the start of the project, the commissioning process and the operation effect. The safety, blocking and other issues that need attention in the operation were put forward.