The livestock sector emits harmful gases and bioaerosols, impacting animals, plants, and human health. Ventilation systems in livestock buildings disperse polluted air, affecting nearby air quality depending on the wind patterns and atmospheric stability. Understanding pollutant emission and transmission is crucial for environmental mitigation. This study focuses on fine dust dispersion from dairy cattle buildings. Chemical and microscopic analyses were conducted to identify the cattle barn dust sources. Particle mass emissions were quantified by measuring particle mass concentrations and air volume flow using the tracer gas decay method. Seasonal and daily effects on dust emissions were studied. Remarkably, particle emissions remained below prescribed values in Germany. Additionally, particle transmission, including resuspension and adsorption parameters, was investigated using a developed wind tunnel. Resuspension measurements revealed minimal resuspended particle mass due to low ground wind speeds. Notably, wheat, as a model plant, exhibited high adsorption rates, which increased with particle size. Overall, the findings for resuspension and adsorption parameters provide an initial database for understanding fine dust transmission from cattle barns.

畜牧业排放有害气体和生物气溶胶，影响动物、植物和人类健康。畜牧舍内的通风系统会驱散污染的空气，根据风型和大气稳定性影响附近的空气质量。了解污染物的排放和传输对于环境缓解至关重要。本研究的重点是奶牛舍内的细粉尘扩散。通过化学和显微镜分析来确定牛棚灰尘的来源。通过使用示踪气体衰变法测量颗粒质量浓度和空气体积流量来量化颗粒质量排放。研究了季节和日常对粉尘排放的影响。值得注意的是，德国的颗粒物排放量仍低于规定值。此外，还使用开发的风洞研究了颗粒传输，包括再悬浮和吸附参数。再悬浮测量显示，由于地面风速较低，再悬浮颗粒质量极小。值得注意的是，小麦作为模型植物表现出高吸附率，并且吸附率随着颗粒尺寸的增加而增加。总体而言，再悬浮和吸附参数的研究结果为了解牛舍的细尘传播提供了初步数据库。