The production process of the FORSU plant is designed to minimize the environmental impact. The anaerobic treatment of the organic fraction at the beginning of the processing almost completely reduces the odor potential of the waste, which instead contributes to the production of biogas (essentially methane + carbon dioxide). The digestate leaving the first phase has a reduced odor, which is then canceled by the subsequent aerobic phase of compost production. The estimated water requirement is only 17,200 cubic meters per year and corresponds to the annual water consumption of about 350 people, thanks to the massive reuse of water for internal processes. The sewage and first rain waters are transferred via public sewer to the Mancasale purification plant. All processes are carried out in confined spaces, and all the process air is treated with scrubbers and biofilters, in order to avoid residual odors or unwanted emissions.