Edeogu I, Feddes J, Coleman R, Leonard J
Department of Agricultural, Food and Nutritional Science, University of Alberta, 4-10 Ag/Forestry Centre, U. of Alberta, Edmonton, Alberta T6G 2P5, Canada.
Water Sci Technol. 2001;44(9):269-75.
The effects of agitation, liquid-only manure, depth and time on odour emission rates were investigated. Manure storage tanks were filled to incremental depths every two weeks. At each depth odour samples were collected twice. The second sample was collected seven days after the first. Odour concentration was measured with an olfactometer. Three different pig-manure treatments were investigated. In one treatment, slurry manure in a storage tank was agitated before and during odour sampling. In a second treatment, the settlable solids in manure were removed gravimetrically over 24 hours and liquid manure was pumped to a storage tank. In the third treatment (control), odour samples were collected from unseparated and undisturbed slurry manure. Overall, the odour emission rates in the agitated manure treatment ranged between 0.39 and 1.02 ou s(-1) m(-2), increased with depth and decreased with time, i.e. after seven days at each depth. In the liquid-only manure treatment, the emission rates ranged between 0.09 and 0.69 ou s(-1) m(-2), increased with depth but the effect of time was not evident. In the control treatment, the emission rates ranged between 0.20 and 0.66 ou s(-1) m(-2) and increased with depth on the first odour sampling day but decreased with depth on the second sampling day.
研究了搅拌、纯液体粪便、深度和时间对气味排放率的影响。每隔两周向粪便储存罐中填充至不同深度。在每个深度采集两次气味样本。第二个样本在第一个样本采集七天后采集。用嗅觉计测量气味浓度。研究了三种不同的猪粪处理方法。在一种处理方法中，在气味采样前和采样期间对储存罐中的 slurry 粪便进行搅拌。在第二种处理方法中，通过重量法在 24 小时内去除粪便中的可沉降固体，并将液体粪便泵入储存罐。在第三种处理方法（对照）中，从未分离且未扰动的 slurry 粪便中采集气味样本。总体而言，搅拌粪便处理中的气味排放率在 0.39 至 1.02 ou s(-1) m(-2) 之间，随深度增加而增加，随时间减少，即在每个深度放置七天后。在纯液体粪便处理中，排放率在 0.09 至 0.69 ou s(-1) m(-2) 之间，随深度增加，但时间的影响不明显。在对照处理中，排放率在 0.20 至 0.66 ou s(-1) m(-2) 之间，在第一次气味采样日随深度增加，但在第二次采样日随深度减少。
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