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| Ammonia emission characteristics and construction of an emission reduction system for livestock and poultry farming in China |
| Received:September 24, 2021 |
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| KeyWord:livestock and poultry breeding;ammonia emissions;model of ammonia emission reduction;technology of ammonia emission reduction;policy suggestions |
| Author Name | Affiliation | E-mail | | WANG Wenlin | Nanjing Institute of Environmental Sciences, Ministry of Ecology and Environment, Nanjing 210042, China | | | DU Wei | Nanjing Institute of Environmental Sciences, Ministry of Ecology and Environment, Nanjing 210042, China | | | HAN Yujie | School of Geography Science, Nantong University, Nantong 226007, China | | | CAO Bingshuai | Nanjing Institute of Environmental Sciences, Ministry of Ecology and Environment, Nanjing 210042, China | | | LI Wenjing | Nanjing Institute of Environmental Sciences, Ministry of Ecology and Environment, Nanjing 210042, China | | | TONG Yi | Nanjing Institute of Environmental Sciences, Ministry of Ecology and Environment, Nanjing 210042, China | | | DAI Shuoyun | School of Geography Science, Nantong University, Nantong 226007, China | | | LIU Bo | School of Geography Science, Nantong University, Nantong 226007, China | lb@ntu.edu.cn |
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| Abstract: |
| With the aim of pollution prevention through collaborative production and combined sewage-gas-solid waste processing as the target, the characteristics of ammonia emission in livestock and poultry breeding were analyzed. Ammonia emission in the closed enclosure with mechanical ventilation was lower than that in the open enclosure with natural ventilation. Under the same ventilation mode, ammonia emission in the enclosure was in the order of water flushed feces < dry cleaned feces < bedding straw and bedding material < blistering feces. Ammonia emission was the most in the fertilizer and water storage mode for each livestock breed. Analysis of the integration of breeding processes and policy standards of emission reduction technology indicated that a closed enclosure combined with mechanical ventilation, compost fermentation, anaerobic fermentation, low protein diet, exhaust air treatment, mulching, closed compost combined with waste gas treatment, mechanical deep application of manure and other ammonia control technologies can be used toward livestock ammonia emission reduction. The corresponding relationship of ammonia emissions reduction mode and technology was clear, and a livestock and poultry ammonia emission reduction system was established coupled with model substitution and reduction technology. In addition, proposals for establishing environmental quality standards for atmospheric ammonia, ammonia emission standards for livestock and poultry breeding, and supporting technical specifications for ammonia monitoring, including those for accounting and engineering construction for ammonia emission reduction in livestock and poultry farms, are suggested, to provide a basis for the promotion of pilot studies on ammonia emission reduction in livestock and poultry farming. |
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