好氣性 및 嫌氣性 消化에 의한 豚糞處理

Aerobic and Anaerobic Digestion of Swine Manure

This study was conducted to evaluate the organic removal efficiencies and sludge production in aerobic and anaerobic digestion of swine manure. A laboratory single-stage, high-rate, anaerobic digester was operated at 5, 10, 25 and 30 day s HRT at the temperature of 35℃, and also aerobic digester operated at 10, 20 and 28.6 day s HRT at the temperature of 20℃. The conclusions from this study are as follows: 1. While the BOD removal efficiency by anaerobic digestion was 30 to 75%, it was 99% over by aerobic digestion. 2. The sludge production was similar in both aerobic and anaerobic digestion. 3. The gas production was 0.21 to 0.55 m³/kg VS fed by anaerobic digestion.