BATCH AEROBIC AND ANAEROBIC SEQUENTIAL DRY FERMENTATION SYSTEM AND METHOD

摘要

PURPOSE: A batch type aerobic and anaerobic sequential dry-fermentation system and a method for the same are provided to efficiently collect methane gas by decomposing and stabilizing organic waste without an acid fermentation step. CONSTITUTION: A batch type aerobic and anaerobic sequential dry-fermentation system includes bath type reactors(10). Six reactors are in one group. A batch type reactor is composed of a circular tank(100), an upper cover(200), and a lower cover(300). The outer wall of the tank is formed into a double wall(100a,100b). Warm water is circulated and supplied into the dual wall in order to control the temperature of the tank. A pressure gauge(210), a vacuum pressure switch(220), an air discharging fan or air discharging valve(230), a gas discharging pipe(240), and a vacuum valve are formed on the upper cover. The rotary shafts(262) of four motors(261) are vertically installed in the tank. Rotary blades(260) with different teeth heights are formed on the ends of the rotary shafts. [Reference numerals] (AA) Vacuum