Abstract: A device is provided for separating oil and fat from a liquid mixture. The device includes a tank divided by a baffle plate into two separate compartments which leaves an opening between the compartments, a baffle disposed at the bottom of the tank for preventing migration of settled solids between compartments and an immersion type recirculation pump that sucks liquid out of one compartment and forces through a filtration device projecting into the tank that contains tubular ceramic membranes.