Since the end of April, a biomethane production plant, fed with organic municipal solid waste fraction (OFMSW), designed and constructed by Sebigas for Maserati Energia (owned by Maserati and Sebigas), and located close to Piacenza, Italy, is officially in operation.
The plant, located on an area of 35,000 m2, has been designed to treat 50,000 t/year of OFMSW and 5,000 t/year of plant residues. The different treatment phases optimize the entire process and thus reduce the final waste output. Infact only the 7% of the received waste -plastics, metals and other inerts– is not treated.
The heart of the plant, where the wet anaerobic digestion process takes place, is composed of 5 tanks (1 pre-tank, 3 digesters and 1 final tank). The biogas produced from the anaerobic digestion process is then treated in the specific upgrading system that separates the CO2 from the methane, producing 5.100.000 Sm3 of biomethane every year to use for transportation.
Maserati Energia plant transforms the organic waste produced by about 600,000 citizens in one year, in over 180,000 methane car fill up, more than 54,000,000 km, 90,000 car travels from Rome to Milan in one year. Moreover, the plant allows a local management of the collected waste, minimizing transports and thus reducing the environmental impact of the entire process, generating a high value economics and incentivising circular economy and renewables.
The anaerobic digestion process, in addition to the biomethane, produces also compost (10,000 t/year) and clean liquid effluent (36,000 m3/year). The first is entirely used as fertilizer in agriculture, while the liquid effluent is in part destined to river discharge, and in part used within the treatment phases.