Rancang Bangun Single Stage Semi Continuous Anaerobic Digester dengan Resirkulasi Sludge menggunakan Substrat Palm Oil Mill Effluent (POME)

Abstract

Palm Oil Mill Effluent (POME) has the potential to be utilized as a renewable energy source through anaerobic digestion. This research focuses on the design of a single-stage semi-continuous anaerobic digester system with sludge recirculation as the initial stage in developing a POME-based biogas reactor. The design includes determining the reactor capacity, pumping system, operating pressure, energy requirements, and heating system integration. The digester is designed using a 1500 L tank with a working volume of 1080 L and a gas chamber of 420 L. The recirculation system utilizes internal hoses, an overflow pipe, a ball valve, a pressure gauge, and a pump with a minimum pressure of 1.53 psi and a fluid flow rate of 3.46 L/m. Functional testing demonstrated that the system can operate stably for recirculation, temperature control and produces 0.449 m³ of biogas. This design demonstrates that a semi-continuous digester system with sludge recirculation can be built economically and is ready to be used as the basis for developing reactors on a household or small-scale industry.