A continuous flow sterilization system includes an inclined treatment chamber having a first end and a second end. An ozone generator generates a flow gas containing ozone; an input opening to receive a bulk material into the treatment chamber. An input port is provided for introducing the flow gas containing of ozone into the treatment chamber. A first sensor measures a level of ozone in the gas output of the treatment chamber. The other sensors measure ozone concentration and temperature within the treatment chamber. An output opening provides an exit for the bulk material. An output port provides an exit for the flow gas. An auger is disposed within the treatment chamber to move the bulk material through the treatment chamber.