Abstract:In order to achieve the resource-based processing of OFMSW, the organic fertilizer manufacturing equipment have been developed for the treatment of domestic garbage in the plot, which consists of control system, frame, reaction chamber and propulsion stirrer. The domestic garbage and the effective microorganisms are put into the chamber through the inlet, and then mixed and stirred by a stirring device. The aerobic condition is maintained by the ventilation system, and the suitable ambient temperature of the microorganism is automatically maintained to increase the conversion rate. After the treatment is completed, the material is automatically discharged from the equipment by a propeller stirrer. The structure design of this system was carried out such as the composting reaction chamber and stirring device. The control system based on microcontroller was carried out to realize automatic control of temperature, stirring rate and ventilation rate. A experiment was conducted for 5 days by using the source materials consisting of kitchen waste, wood chips, EM bacteria and hydrated lime with the wet weight ratio of 19∶2∶2∶1. The initial moisture content was 49.5% and the ventilation rate was set to 0.3 L/(min?kg) OM. The temperature was set at 55 ℃ after raising over 80 ℃ for 12 hours. The results show that the ventilation rate and temperature are well controlled. After 5 days, the moisture content of organic waste was 46.9%, the pH value was 5.94, and the relative degradation rate of volatile solids reached 52.1%.