Volume 16, No. 1, January 2016, Pages 79-90 PDF(334 KB)
Supplementary MaterialPDF (429 KB)
Concentrations and Emissions of Particulate Matter from Intensive Pig Production at a Large Farm in North China
Wen Xu1, Kun Zheng1, Lingmin Meng1, Xuejun Liu1, Eberhard Hartung2, Marco Roelcke3, Fusuo Zhang1
1 College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, China
2 Institute of Agricultural Engineering, University of Kiel, Olshausenstrasse 40, 24098 Kiel, Germany
3 Institute of Geoecology, Technische Universität Braunschweig, Langer Kamp 19c, 38106 Braunschweig, Germany
- Concentrations and emissions of PM10 and TSP were quantified at anintensive pig farm in Beijing.
- Water-soluble ionswere analyzedin the PM10 and TSP collected.
- Secondary inorganic aerosols contributed 12.0 and 13.9% of TSP and PM10, respectively.
- Much more effortis requiredto reduce secondary aerosol emissions from pig production facilities.
Particulate matter (PM) pollution from pig farms is of increasing environmental concern due to the rapid development of intensively managed pig farms worldwide. However, information on this topic is scarce in China to date. Therefore a two-year study to monitor the dynamics of total suspended particles (TSP) and particulate matter with diameter less than 10 µm (PM10) and their soluble ions was conducted at an industrial pig farm near Beijing. In total, two fattening pig houses were sampled during three fattening periods from 2010 to 2011. Daily mean indoor TSP and PM10 concentrations were 1.85 and 0.63 mg m–3 on average. The emissions of PM per livestock unit (LU unit =500 kg), and per unit area (m2) from the pig house averaged 467.5 mg h–1 LU–1 and 38.6 mg h–1 m–2 for TSP, while those for PM10 averaged 256.7 mg h–1 LU–1 and 16.8 mg h–1 m–2, respectively. Particulate NH4+ in both TSP and PM10 showed significant positive correlations with particulate NO3– and SO42– inside and outside the pig houses. Daily mean indoor concentrations of secondary inorganic aerosol (sum of NH4+, NO3– and SO42–) ranged from 10.8 to 368.8 µg m–3 (average 116 µg m–3) in TSP and from 5.1 to 220.1 µg m–3 (average 58.6 µg m–3) in PM10. Contributions of secondary inorganic PM to TSP and PM10 emissions varied from 0.3 to 50.8% and from 1.0 to 48.7%, respectively, with averages of 12.0 and 13.9%. Our results suggest elevated PM and secondary inorganic PM concentrations and substantial emissions of PM from the fattening pig houses in China.
Particulate matter; Secondary inorganic aerosol; Air quality; Livestock emissions; Pig farm particulates.