Zhu J, Li X
University of Minnesota, Southern Research and Outreach Center, Waseca 56093, USA.
J Environ Sci Health B. 2000 Mar;35(2):245-58. doi: 10.1080/03601230009373267.
This paper presents field data to illustrate the characteristics of downwind odor dispersion. A total of eight swine facilities were studied in this project and power functions were found to be an appropriate description of the pattern of downwind odor transport for both swine buildings and manure storage lagoons and tanks. The coefficients of correlation for the power regressions ranged from 0.75-0.87. It was found that swine buildings have the potential of generating more odor than manure storage facilities such as lagoons and tanks and thus could be the major odor sources causing downwind odor nuisance. Therefore, to maintain the building clean should be highly recommended as swine producers' best management practice. For earthen basins, the odor strength was reduced by 80% at about 250-meter distance from the source. While for the swine building, a 50% of reduction in odor strength was observed at the same distance. The study did not show any advantages of using lagoons over concrete (or steel) manure tanks in terms of reducing downwind odor concentrations. Land application of manure did not cause persistent downwind odor problems.
本文展示了实地数据，以说明顺风方向气味扩散的特征。本项目共研究了八个养猪场，发现幂函数能够恰当地描述猪舍以及粪便储存池和罐体顺风方向气味传播的模式。幂回归的相关系数在0.75至0.87之间。研究发现，猪舍产生气味的可能性比诸如储存池和罐体等粪便储存设施更大，因此可能是导致顺风方向气味滋扰的主要气味源。因此，强烈建议养猪生产者将保持猪舍清洁作为最佳管理实践。对于土池，在距离源头约250米处气味强度降低了80%。而对于猪舍，在相同距离处气味强度降低了50%。该研究未显示出在减少顺风方向气味浓度方面，使用储存池相对于混凝土（或钢制）粪便罐体有任何优势。粪便的土地施用并未造成持续的顺风方向气味问题。
