Method of operating a separator by recirculating an entraining liquid

1. A method of operating a separator to disinfect raw milk or whey, the separator including a rotatable drum having a vertical axis of rotation and further including a disk stack, at least two outlets, an inlet, and a controlling device located between the at least two outlets and the inlet, the method steps comprising:

providing a product to be processed to the separator;

operating the separator;

regulating a quantity of the product processed by controlling an amount of a recirculated product phase into the inlet such that the separator operates independently of variations of an inflow of the product quantity to be processed; and

further operating the separator within a range of an optimal clarifying effect by recirculating a portion of a disinfected milk phase with an entraining liquid to the inlet.

2. The method of claim 1 , wherein the entraining liquid is a product generated within the separator.

3. The method of claim 1 , wherein the entraining liquid is not a final product discharged from the separator.