Patent ID: 6110727
Filing Date: 2000-08-29
Classification: B01F,B09B,C05F,C12M,C12P,Y02E,Y02P,Y02W

Abstract:
A process for biological treatment of organic waste material in a solids reactor, comprising the steps of:charging the reactor with the waste material at a first end of the reactor;feeding air to the waste material so the air flows through the waste material in a first direction, to cause an aerobic degradation of organic substances in the waste material, whereby the waste material heats to a process temperature in the reactor;applying leaching liquid to the material so the leaching liquid flows through the waste material in a second direction opposite to the first direction and so that at least one of soluble organic substances, soluble inorganic substances, and water soluble fatty acids are leached from the waste material into the leaching liquid;agitating, circulating and transporting the waste material with an agitating/circulating/transporting mechanism in the reactor to mix the waste material, prevent the formation of liquid bypass channels in the waste material, and transport the waste material towards a second end of the reactor; andremoving the leaching liquid charged with at least one of soluble organic substances, soluble inorganic substances, and water soluble fatty acids at a lower part of the reactor.