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http://dx.doi.org/10.17137/korrae.2019.27.3.49

Evaluation of Composting Characteristics According to the Air Supply Change in Farm-Sized Swine Manure  

Lee, Sunghyoun (Animal Environment Division, National Institute of Animal Science)
Jeong, Gwanghwa (Animal Environment Division, National Institute of Animal Science)
Lee, Dongjun (Animal Environment Division, National Institute of Animal Science)
Lee, Donghyeon (Animal Environment Division, National Institute of Animal Science)
Jang, Yuna (Animal Environment Division, National Institute of Animal Science)
Kwag, Junghoon (Animal Environment Division, National Institute of Animal Science)
Publication Information
Journal of the Korea Organic Resources Recycling Association / v.27, no.3, 2019 , pp. 49-61 More about this Journal
Abstract
Swine manure has been recognized as a organic sources for composting and many research was conducted to efficiently utilize and treat. This study was to evaluate a feasibility for producing swine manure compost under various treatment with mixture of swine manure and saw dust. Treatments were designed as follows; non aerated composting pile(REF), aerated composting pile of $100L/m^3$(EXP1), and aerated composting pile of $150L/m^3$(EXP2). The total days of fermentation were 28 days and each samples were collected at every 7 days from starting of composting. Temperature sensors were installed under 30~40cm from the surface of composting pile. Inner temperature in composting piles of EXP1 and EXP2 was rapidly increased to $67{\sim}75^{\circ}C$ within 1~2 days. The elevated temperatures found during the thermophilic phase are essential for rapid degradation of organic materials. While swine manure composted, moisture content, total nitrogen, EC of EXP1, EXP2 in sample at 28 days were lower than those of REF. But, pH and organic matter of EXP1, EXP2 in sample at 28 days were higher than those of REF. After finishing fermentation experiment, maturity was evaluated with germination test. Calculated germination index(GI) at REF, EXP1 and EXP2 were 23.49, 68.50 and 51.81, respectively. The values of germination index were higher at EXP1 and EXP2 which is aerated composting piles than REF which is non aerated composting pile. According to the results, composting process by aerated static pile compost had significant effect on the reduction of required period for composting. Supplying adequate amount of air to compost swine manure will greatly reduce composting period.
Keywords
Swine manure; Composting; Germination Index; Maturity degree; Fermentation;
Citations & Related Records
Times Cited By KSCI : 6  (Citation Analysis)
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