Factors influencing the organic solid waste biodegradation in aerobic vessel compost system

The main factors influencing the organic solid waste biodegradation in aerobic vessel compost system, which included the kinds of composting materials, temperature, moisture content, particle size and C/N ratio in aerobic composting, were investigated by doing a set of bench-scale laboratory experiments. The study shows that the optimum process conditions are 40-50°C, 50% moisture content 30 mm particle size and the C/N ratio of 30:1. The experiment results show that these factors shall be strictly controlled in a proper range to ensure composting reactions. The factors were compared through orthogonal experiments. The results show that moisture content is the most significant factor in TOC biodegradation, C/N ratio the next, and the temperature and particle size the least.