Bacterial composition, method and installation for the pre-treating effluents loaded with organic fatty substances

摘要

A bacterial composition, a process and a facility for the pre-treatment of effluent rich in organic fats of animal or vegetable origin. The bacterial composition principally is the bacterial strain Klebsiella oxytoca. The process consists of supplying a homogenisation and/or processing vessel ( 1 ) with effluent to be pre-treated, as it is produced, activating a recirculation circuit ( 2 ) between the vessel and a biological reactor ( 3 ) to obtain a fat dilution rate situated between 0.400 h^-1 and 1.500 h^-1 for an initial fat concentration of 1 g/l, degrading the fats in the biological reactor ( 3 ) using the bacterial composition and discharging the pre-treated effluent to a final treatment unit such as a purification plant.