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| Seasonal ammonia emission from intensive pig farm by high resolution online monitor |
| Received:May 21, 2019 |
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| KeyWord:ammonia emission characteristics;large-scale pig farms;air pollution |
| Author Name | Affiliation | E-mail | | JI Ying-jie | College of Environmental Science and Engineering, Donghua University, Shanghai 201620, China | | | SHEN Gen-xiang | College of Environmental Science and Engineering, Donghua University, Shanghai 201620, China
Shanghai Academy of Environmental Sciences, State Environmental Protection Key Laboratory of the Cause and Prevention of Urban Air Pollution Complex, Shanghai 200233, China | shengx@saes.sh.cn | | XU Chang | Shanghai Academy of Environmental Sciences, State Environmental Protection Key Laboratory of the Cause and Prevention of Urban Air Pollution Complex, Shanghai 200233, China | | | ZHOU Zhong-qiang | School of Resources and Environmental Engineering, East China University of Science and Technology, Shanghai 200237, China | | | WANG Zhen-qi | Shanghai Academy of Environmental Sciences, State Environmental Protection Key Laboratory of the Cause and Prevention of Urban Air Pollution Complex, Shanghai 200233, China | | | QIAN Xiao-yong | Shanghai Academy of Environmental Sciences, State Environmental Protection Key Laboratory of the Cause and Prevention of Urban Air Pollution Complex, Shanghai 200233, China | | | WANG Jing-lu | Hangzhou Environmental Monitoring Center Station, Hangzhou 310007, China | | | YE Xian-man | Hangzhou Environmental Monitoring Center Station, Hangzhou 310007, China | |
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| Abstract: |
| This study was focused on ammonia emission from an intensive pig farm, where ammonia concentration in piggeries and manure sheds was monitored using high-resolution online monitor during the typical time of seasons. The results showed that the average seasonal ammonia concentrations in the piggery shed were 3.31±0.31 mg·m-3 during summer and 4.91±0.56 mg·m-3 during autumn. The figures for manure shed were 6.26±1.57 mg·m-3 for summer, and 3.19±0.61 mg·m-3 for autumn. The hourly ammonia concentrations of the piggery shed demonstrated significant seasonal differences with 2.9~3.7 mg·m-3 and 3.8~5.5 mg·m-3 in summer and autumn respectively. The ammonia emission in summer increased initially and decreased later, mainly due to the effect of temperature and livestock activity intensity, whereas the ammonia emission in autumn decreased first within the mechanical ventilation mode from 9:00 to 15:00, and then increased within the natural ventilation mode. The ammonia emission fluxes in the piggery were 10.12±0.96 and 7.07±1.58 g·d-1·head-1 for summer and autumn respectively, whereas in the manure shed, the figures were 2.99±0.69 and 0.89±0.31 g·d-1·head-1, respectively. Correlation analysis indicated that in the studied piggery, ventilation was the dominant factor for ammonia emission during summer, whereas temperature and humidity were the major factors during autumn. |
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