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首页> 外文期刊>Applied Engineering in Agriculture >A two-airspace building design to reduce odor and ammonia emissions.
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A two-airspace building design to reduce odor and ammonia emissions.

机译：两层空间的建筑设计，减少了气味和氨气的排放。

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Emissions from the barn ventilation system and manure storage facilities constitute two continuous sources of gas and odor emissions from pig facilities. In Canada, swine manure is generally stored outside the barn to minimize the risk of worker and animal exposure to hydrogen sulfide during manure agitation and to reduce construction costs. However, storing swine manure in the barn would decrease the number of continuous emission sources from two to one. By having two separate airspaces in the building consisting of a main airspace and an enclosed dunging area (EDA), swine manure can be stored within the barn with reduced risk. Gas transfer from the manure storage to the EDA and the building emissions would be reduced if the EDA exhaust air is treated. Preliminary experiments were conducted to determine a basic design for a functioning EDA: type and width of doorway and equipment necessary to minimize the time spent by the pigs in the EDA. The EDA design was incorporated into existing grower-finisher rooms and tested over three trials. Problems with dunging patterns necessitated the modification of the EDA as the study progressed. A 0.4-m rubber strip curtain doorway evolved into a full pen width curtain doorway. During the last trial, when the pigs properly used the EDA as a dunging location, the experimental room equipped with a full width curtain drawing across the EDA tended to reduce odor emissions and provided a 43% reduction in NH3 emissions. Considering the EDA concept and the modifications incorporated to address the experimental challenges over the trials, a full width curtain EDA is the most promising option for separating the main airspace of a barn from the dunging area. More research is required to further develop this concept.
机译：猪舍通风系统和粪便存储设施的排放构成了养猪场的两个连续的气体和臭味排放源。在加拿大，通常将猪粪存储在谷仓外，以最大程度地减少工人和动物在粪便搅动期间接触硫化氢的风险，并降低建筑成本。但是，将猪粪储存在谷仓中会使连续排放源的数量从两个减少到一个。通过在建筑物中有两个独立的空域，包括一个主空域和一个封闭的粪便区（EDA），猪粪便可以降低风险地存储在畜舍内。如果处理EDA废气，则可减少从粪便存储区到EDA的气体转移以及建筑物的排放。进行了初步实验，以确定能正常运行的EDA的基本设计：门的类型和宽度以及所需的设备，以尽量减少猪在EDA中花费的时间。 EDA设计已合并到现有的种植者肥育室中，并进行了三项试验。随着研究的进行，粪便模式的问题需要对EDA进行修改。一个0.4米长的橡胶条形窗帘门口演变成全钢笔宽度的窗帘门口。在最后一次试验中，当猪正确地将EDA用作粪便时，实验室配备了横跨EDA的全幅幕布，可减少气味排放，并减少NH3排放43％。考虑到EDA概念以及为应对试验中的实验挑战而进行的修改，全宽幕EDA是将谷仓的主要空域与粪便区分开的最有希望的选择。需要进一步研究以进一步发展该概念。

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