Abstract
Increasing the size of the animal feeder has created a problem of wastes management. The feasible systems are desired for wastes management and utilization.
Authors developed a compact experimental device in order to recognize the composting mechanisms and suitable composting conditions. The results of this paper were as follows.
1. In order to conduct the satisfactory experiments with the compact device, adiabatic treatment was performed for the compact composting container and the surrounding temperature of the container was kept automatically almost equal to the material temperature. As the result, the material temperature could rise as high as that of the practical composting.
2. In the practical composting, the conditions of composting had to be recognized from the partial date of material conditions. Since composting was advanced uniformly in this container, authors could recognize the data of whole material conditions. Consequently, more effective experiments. could be carried out. The data obtaned from this method were considered to correspond to those of the practical composting.
3. The pattern of material temperature rising formed very often a curve which had two peak values. There was a significant correlation between the value of the first peak and the value of the second peak.
4. The values of the two peaks corresponded to the activity of the mesophilic and the thermophilic bacterias.
5. Measurement of the moisture content and the weight loss, and ingredient analysis of the exhaust air made it possible to divide the weight loss into the moisture loss and dry matter loss. The results showed the possibility of clearer analysis of the composting mechanisms.
