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Chinese Agricultural Science Bulletin ›› 2015, Vol. 31 ›› Issue (14): 14-19.doi: 10.11924/j.issn.1000-6850.casb14120060

Special Issue: 土壤重金属污染 畜牧兽医

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Emission Inventory of Large-scale Pig Farm in Sichuan Province

Guo Weiguang, Yong Yi, Chen Jie, Jiang Tao, Ye Hong   

  1. (Sichuan Research Institute of Environmental Protection, Chengdu 610041)
  • Received:2014-12-08 Revised:2015-05-04 Accepted:2015-03-26 Online:2015-06-02 Published:2015-06-02

Abstract: In order to provide support for the follow-up research on pollution control policy and figure out the quantity and distribution of emission of large-scale pig farms in Sichuan Province, emission inventory of large-scale pig farms in Sichuan Province was calculated based on the statistics of pig population and generation and discharge coefficient in large-scale pig farms in Sichuan Province. The results showed that the amount of excrement produced by large-scale pig farms in Sichuan province in 2013 was 3173800 t in total, and the amount of urine was 7594750 t. The emission of COD from large-scale pig farms in Sichuan Province reached 180679 t, the total emission of nitrogen and phosphorus amounted to 16665 t and 1734 t, respectively. The five largest emission cities in Sichuan Province were Nanchong, Guangyuan, Mianyang, Deyang and Chengdu, which were the key areas of pollution control in pig breeding industry in the future.