IMPROVED APPARATUS FOR COMPOSTING AND DIGESTION OF BIODEGRADABLE WASTE

摘要

An organic material composting apparatus formed of a unitary system comprising an inlet 5, an outlet 17, one or more homogenizer tanks 6, one or more rotary digesters 11 and means 9 for transferring material from the homogenizer to the rotary digester wherein the homogenizer comprises a stirrer 7 to create a vortex in the fluid and an air supply at a location in the tank adjacent the vortex, the rotary digester comprises a circulator arranged to circulate heated air within the digester and to input fresh heated air to the digester (fig 2; 30). Ideally, the stirrer is a paddle stirrer and the rotary digester is a drum which rotated about the horizontal axis and is driven by a motor and chain drive. Preferably, heated air from the rotary digester is transferred to the homogenizer.