Composting treatment facility and method for food waste

摘要

PURPOSE: A method and an apparatus for composting food waste are provided to produce organic fertilizer supplying essential nutrients for growth of plants by using biological energy, byproduct, generated from aerobic fermentation of food waste. CONSTITUTION: The composting method is as follows: pouring food waste in a reaction vessel(10) with adding water controller, such as saw dust and returned compost, and Bio-Compo to increase activity of microbes; mixing the mixture homogeneously with a rotary wing(14) in the reactor; supplying air through an air-inlet(36a) on the bottom of the reactor, and an air-inlet(36b) on the surface of a rotary axis(12), and optionally operating a heater(20) on the bottom of the reactor in winter, thereby resulting in aerobic fermentation of food waste, water evaporation due to the heat, byproduct, generated from waste decomposition, and promotion of composting. Also, water and gas formed in fermentation is discharged through a gas-outlet(46) on the upper part of the reactor; discharging fermented waste, organic fertilizer.