生ごみの小型堆肥化処理システムに関する研究 : コンポスターの規模と内部温度

概要

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To decide the minimum size of garbage composter, the relation between scale of composter and internal temperature was investigated. We made a vertical 50 ?-four-stair composter and a horizontal 360 ?-four-box composter, and purchased a 120 ? plastic composter. The maximum internal temperature in 50 ?-scale composter was 43℃ in summer and that was 16℃in autumn. So, 50 ?-scale was considered to be too small for composter. The maximum internal temperature in 120 ?-scale composter was 58℃ and the garbage matured favorably in summer. But in autumn, maturing speed became slow and at the coldest season, the internal temperature fell to 12℃. Maturing of garbage scarcely progressed. The masimum internal temperature in 360 ? -scale composter was 67℃ and the garbage matured rapidly in summer and autumn. Even at the coldest season, maturing progressed slowly, showing the maximum temperature of 43℃. Besides, carbon/nitrogen ratio (C/N ratio) garbage compost in summer decreased with scale of composter. Namely, the C/N ratio of 360 ?-scale compost was lowest, 10.3. On the other hand, that of 50 ?-scale compost was highest, 12.5. These results showed that about 500 ? volume was necessary for composter scale to advance first fermentation of garbage in winter.
滋賀大学の論文
1986-08-01