Abstract: The present invention relates to a process for producing methane and to the device for producing methane, making it possible to increase the methane content of the outgoing gas and preferably simultaneously to increase the methane content of the outgoing gas and the productivity of the reactor.

Abstract: A method for the biological treatment of wastewater containing pollutants, using an aerobic biomass, includes a plurality of successive cycles of a predefined duration in order to achieve pollutants removal efficiency of 90% or higher, each of the cycles including the following steps: —introducing a wastewater effluent containing phosphorus and calcium into a reactor containing biomass; —applying an aerobic phase by introducing into the reactor a gas flow containing oxygen for a predefined length of time, sufficient to form aerobic biomass granules; —decanting the aerobic biomass granules thus formed; —and removing at least part of the treated effluent. After each step of introducing effluent into the reactor, the pH in the reactor is maintained at a value above 8 for a length of time at least equal to 10% of the cycle duration.

Abstract: A method for the biological treatment of wastewater containing pollutants, using an aerobic biomass, includes a plurality of successive cycles of a predefined duration in order to achieve pollutants removal efficiency of 90% or higher, each of the cycles including the following steps: introducing a wastewater effluent containing phosphorus and calcium into a reactor containing biomass; applying an aerobic phase by introducing into the reactor a gas flow containing oxygen for a predefined length of time, sufficient to form aerobic biomass granules; decanting the aerobic biomass granules thus formed; and removing at least part of the treated effluent. After each step of introducing effluent into the reactor, the pH in the reactor is maintained at a value above 8 for a length of time at least equal to 10% of the cycle duration.