| Summary: | 碩士 === 國立中山大學 === 環境工程研究所 === 94 === According to the statistics of “Annual Report of Environment Protection in Taiwan, the Republic of China” published by the Executive Yuan, the percentage of food waste and organic garbage amount to about 20-30% of ordinary family garbage, where the food waste is about 10-15% of ordinary family garbage.To recycle the wastes, an effective method of collecting and processing food waste in order to achieve the goal of garbage reduction depends on the cooperation of civilians. The food waste collected will be processed through composting, hog-feeding, or anaerobic decomposition.
The composting treatment can be divided into anaerobic and aerobic methods. Aerobic composting process is to make use of turning, forced blowing or suction of air in order to supply oxygen. Major process is based on aerobic decomposition to cause the stabilization of organic material. As the reaction speed is fast, the processing time can be drastically reduced and is thus called “high-speed composting process”. Presently there are already many researches in the method of processing food waste that could complete composting products within the shortest time.
The result of this study shows if the collection, transportation, treatment, and recycling processes can be properly planned and promoted, the civilians tend to cooperate and the amount of waste recycling can be significantly increased. In addition, by controlling living condition of fungi including moisture content, temperature, PH value, and volatile solid through evaluating primers of superior fungi, the investigation of the food waste processing efficiency and its influence shows there is a trend of significant reduction in the amount of volatile solid material with time.This indicates the phenomena of food waste being decomposed by fungi. The estimation of decomposing speed for food waste is in the range of 2.08×10-4 ~ 1.00×10-2 kg/hr and the average speed is 2.87×10-3 kg of food waste per hr-kg of fungi. The efficiency of treatment is about 50% of the result of original Japanese plants.
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