METHOD FOR ANAEROBIC DIGESTION OF SOLID URBAN WASTE IN TEMPERATURE PHASES

摘要

The invention relates to a method for anaerobic digestion of municipal solid waste in temperature phases. The invention consists of a method for anaerobic degradation in temperature phases (thermophilic-mesophilic sequential) of OF-MSW (organic fraction of municipal solid waste), by means of which it is possible to increase the stability of the process and the per-day capacity for treating organic waste, achieving greater efficiency in the production of biogas related to the amount of organic matter supplied to the system or consumed by same. The process consists in subjecting the waste to thermophilic pre-treatment for a certain length of time in order to efficiently achieve high hydrolysis and solubilization of organic waste. The second stage of the process consists in subjecting the waste pre-hydrolyzed during the thermophilic phase to mesophilic degradation, such that the solubilized matter is consumed during this second phase.