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돈사 환기팬 가동률에 따른 바이오커튼 내 안개분무 시 악취저감 효능 평가 KCI 등재
Odor reduction efficiency through exhaust fan operating rate with spraying inside Bio-curtain
pp.21-27
This study evaluated the effectiveness of odor reduction when spraying inside the Bio-curtain (hereinafter referred to as curtain) according to the exhaust fan operating rate. Spraying is a main factor affecting the ability to odor reduction of curtains. The curtain (total area: 37.9m3) was constructed with two layers of light-shielding screens stretched over a rectangular parallelepiped structure installed around an exhaust fan (630 mm) on the side wall of a pig barn. Air samples for odor analysis were collected from inside the pig barn and outside the curtain. The main odorous compounds such as volatile fatty acids, phenols, indoles, and ammonia were measured. The odor reduction effectiveness was evaluated by total odor activity values (TOAVs) summed to the odor activity values of each odorous compounds. Depending on the exhaust fan operating rate, the reduced rate of TOAVs gradually decreased to the range between 15.67% and 68.80%. Because the contact time between the spraying liquid and the air velocity of the exhaust fan becomes shorter (or there is a reduction in liquid to gas flow ratio) as the exhaust fan operating rate increases. The results of this study can be used as basic data for research into spraying conditions to improve the odor reduction effectiveness of curtains.
2. 재료 및 방법
2.1 시험 돈사 및 커튼의 특성
2.2 돈사 환기팬 및 커튼 외부로 배출되는 풍속 측정
2.3 악취물질 분석용 공기 시료채취
2.4 악취물질 종류 및 분석방법
2.5 악취물질별 악취활동도 및 총 악취활동도
3. 결과 및 고찰
3.1 돈사 환기팬 및 커튼 외부로 배출되는 풍속의 변화
3.2 악취물질별 악취활동도
3.3 돈사 환기팬 가동률에 따른 커튼 내부 안개분무시 악취저감 효능
4. 결 론
사 사
References
