不同地面结构育肥猪舍的恶臭排放影响因素分析

Odor Emissions and Impact Factors of Fattening Pig Rooms with Different Floor Systems

研究了冷、暖季节下生物发酵床、水泥实心、全缝隙3种不同地面结构的机械通风育肥猪舍的恶臭浓度、排放系数及地面结构、舍内温湿度、猪体重对恶臭浓度的影响。研究表明:猪舍的恶臭浓度与舍内温度、猪体重呈显著正相关(p【0.05),恶臭浓度与相对湿度无显著相关性(p】0.1);地面结构不同,恶臭浓度存在显著差异(p【0.05);生物发酵床猪舍有助于恶臭减排,恶臭浓度最低,水泥实心地面猪舍的恶臭浓度最高,全缝隙地面猪舍的恶臭浓度居中;生物发酵床、全缝隙、水泥实心地面育肥猪舍的恶臭排放系数分别为(3.39±3.33)(、3.70±1.31)(、4.33±2.39)OU/(m2.s)。

Odor samples from three fattening rooms with different floor systems were collected and analyzed by using triangle odor bag method under cool and warm weather. It showed that there were significantly positive correlations between odor concentration and indoor temperature and pig weight（p 〈 0.05）. The correlation was not significant between odor concentration and relative humidity （p 〉 0. 1 ）. Significant differences were found in the three pig rooms with different floor systems（p 〈 0.05）. Odor concentration was highest in the pig room with traditional concrete floor system; full-slatted floor system was the second, and the lowest for deep-litter fermentation system. The results indicated that deep-litter system was effective for odor mitigation. Odor emission factors from the deep-litter room, fully-slatted floor room, and concrete floor room were （3.39 ± 3.33 ） , respectively （3.70 ±1.31） and （4.33 ±2.39） OU/ （m2s）