Enhancing Mesophilic Anaerobic Digestion of Waste-Activated Sludge through Heat Pretreatment and Kinetic Modeling

Sewage sludge is a useful raw material for the production of renewable energy due to its stable annual output. In this study, enhancement mesophilic anaerobic digestion sewage through heat pretreatment at 95 °C 30 min was tested in an moving bed biofilm reactor (hAMBBR). The retention time set 20, 15, 10, and 5 days during 300 operation compared traditional continuous stirred tank (AnCSTR) without pretreatment. Results research indicate that ratio volatile soluble solids hAMBBR process could be improved by 50%, average conversion methane increased 45%. When (SRT) shortened days, approached twice contrast reactor. expanded model, including activated models, utilized simulation. effect shortening on suspended (VSS) digestibility well reproduced with simulations. conclusion reveals impact types provides scientific basis improving efficiency digestion.