Studies on the Utilization of Exothermic Heat Composting during Winter Season

동계(冬季) 퇴비부숙열(堆肥腐熟熱) 이용(利用)에 관(關)한 연구(硏究)

  • Published : 1984.09.25


This study was conducted to evaluate the characteristics of exothermic heat and compost generated from decomposition of organic wastes composts were piled up with various sources of raw materials of rice straw, rice husk, human and animal wastes. The duration of generated exothermic heat during compositing process was longer in mixture piles of rice straw/rice husk ratio of 1:1 compared to rice straw alone. Temperature in compost piles added with phosphate as fused superphosphate fertilizer was rapidly increased at the earlier stage of composting and gradually decreased in 30 days compared to the check. pH of compost showed 5.5 at initial piling, however, its peak appeared 8.8 in 10 days with rapidly increasing temperature of compost and maintained around 8.3 after one month. Compost of mixture of rice straw and chicken droppings maintained temperature ranges of 30 to $65^{\circ}C$ for 39 days, compost of rice straw, rice husk and chicken droppings for 69 days, piles of rice straw, rice husk and hog manure for 56 days, mixture of rice straw, rice husk and cow manure for 66 days and compost of rice straw, rice husk and human wastes for 21 days.