Study on livestock odour properties, community odour impact criteria and setback modeling for livestock farms

在过去的二十年里，集约化畜牧场的气味排放一直是公众关注的首要问题，因为它们对环境和对邻近居民的潜在健康影响。保持适当的间隔(后退)距离是一种经济有效的减少气味的方法。到目前为止，还没有一个能够给出令人信服的结果的挫折模型。最主要的两个原因是：a)对家畜气味的性质没有很好的了解，没有可靠的方法获得气味浓度与强度的关系，因此预测气味浓度的气味扩散模型不能根据现场受体测量的气味强度进行验证，以及b)没有以科学为基础的社区气味影响标准，因此无法确定倒退。

During the past two decades, odour emission from intensive animal production farms has topped the list of public concerns due to their environmental impact and potential health impact on neighbouring residents. Maintaining appropriate separation (setback) distances is an economic and effective way of mitigating odours. So far there is no setback model that can give convincing result. The top two reasons are a) the livestock odour properties have not been well understood and the relationships of the odour concentration and intensity were not obtained with reliable approaches thus the odour dispersion models that predict odour concentrations cannot be validated against field receptor measured odour intensities, and b) there are not science-based community odour impact criteria so the setback cannot be determined.