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

Abstract

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.

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