Centre National De La Recherche Scientifique-cnrs

Institut National Des Sciences Appliquees De Toulouse

Institut National De Recherche Pour L'agriculture, L'alimentation Et L'environnement (inrae)

Valbio

Inst National Des Sciences Appliquees De Toulouse

Enosis

Institut National De La Recherche Agronomique

Mathieu Sperandio

Mansour Bounouba

Beatrice Biscans

Xavier Lefebvre

Yan Rafrafi

Viviana Contreras

Delphine Delagnes

Vincent Guerre

Francois Decker

Evrard Mengelle

Claire Dumas

Stéphane Palmade

Angela Manas-Llamas

Simon Dubos

Zhenjun Wu

François Decker

Béatrice Biscans

Mathieu Pocquet

Michel Mauret

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.

Process and device for the production of methane

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: &#x2014;introducing a wastewater effluent containing phosphorus and calcium into a reactor containing biomass; &#x2014;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; &#x2014;decanting the aerobic biomass granules thus formed; &#x2014;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.

Method for the biological treatment of wastewater using an aerobic granular biomass

Growing community of inventors

Venerque, France

Mathieu Sperandio