논문 상세보기
pp.314-321
The dewaterability of pig manure by heat pre-treatment was evaluated in this study. The specific resistance coefficient, a dewatering characteristic, was measured by time to filtration (TTF) test. The experimental conditions were set for heat treatment: 15, 30, 60, and 120 min at 120 ± 1oC and 16, 30, and 60 min at 135 ± 1oC, respectively. The specific resistance coefficient of pig manure was found to be 9.204 × 1011m/kg before treatment, and it gradually decreased with high temperature and long treatment time. Moisture content was decreased from 88% to 77% by heat pre-treatment, and its efficiency was better than mechanical solid-liquid separation with chemical addition. In addition to increased dewaterability, TOC (Total Organic Carbon) concentration was decreased for about 15-42%. Nitrogen concentration was also decreased due to conversion of NH4 +-N to NH3 gas by increased treatment temperature. Consequently, heat pre-treatment was effective for decreasing moisture content and organic matters, and it could have potential for nitrogen recovery.
II. 연구방법
1. 양돈분뇨
2. 열전처리 조건
3. 탈수성 실험
4. 분석
III. 결과 및 고찰
1. 열전처리에 따른 탈수특성
2. 열전처리에 따른 양돈분뇨 성상변화
IV. 결 론
사 사
References
