AbstractSince the garbage fraction of urban refuse causes many troubles and difficulties in treating and disposing of refuse, an effective treatment of the garbage fraction at an individual emission source would bring a variety of great advantages. Among many possible methods, the microbial decomposition type of garbage treatment system would be one of the most anticipated options. For this purpose we have developed a useful domestic garbage treatment system using micro-organisms with little energy consumption called “static type”. In contrast with the conventional type of garbage treatment devices, which had a hard reactor wall and were always equipped with an internal structure for agitation as well as aeration, our system has a very simple structure and a soft outer wall with high breathability, and mixing operation is only performed once a day (=“static type”). It was indicated that the performance of the garbage decomposition in our system was higher than those of the conventional device type in term...