Biological techniques are widely used to treat gaseous streams derived from waste treatment plants. The generation of volatile organic compounds (VOCs) is one of the principal pollution sources in composting facilities from which nuisance odours are released. In addition, the generation of photochemical smog with other gases such as NOX can produce ozone at ground level due to their photochemical ozone creation potential (POCP). In this work, the performance of an industrial biofilter was evaluated from an environmental point of view. Specifically, this study evaluated the potential impact in terms of photochemical oxidation and odour emission derived from composting in a vessel under four different aeration conditions. Gas chromatography-time-of-flight mass spectrometry (GC-TOFMS) was used to perform the chemical characterisation of the gaseous streams, while dynamic olfactometry was used to carry out the sensorial analysis. A total of 95 compounds belonging to 12 different families of VOCs were selected. Principal component analysis revealed the influence of each VOC family on each impact category and explained 88% of the total variance. Multivariate regression was used to study the correlation between photochemical oxidation and odour impact, which has never been reported before. The correlations obtained (r ≥ 0.97) evidenced the direct relationship between these two impacts. Photochemical oxidation and odour emission were proven to be important environmental impacts derived from composting facilities, whose abatement might be carried out by biofiltration systems.

中文翻译：

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工业生物滤池的环境性能：光化学氧化与气味影响之间的关系。

生物技术被广泛用于处理源自废物处理厂的气流。挥发性有机化合物（VOC）的产生是堆肥设施中主要的污染源之一，从中释放出讨厌的气味。另外，由于其他气体（例如NOX）产生光化学烟雾，由于它们具有光化学臭氧产生潜能（POCP），因此可以在地面上产生臭氧。在这项工作中，从环境角度评估了工业生物滤池的性能。具体而言，这项研究评估了在四种不同曝气条件下，容器中堆肥产生的光化学氧化和气味散发的潜在影响。气相色谱飞行时间质谱（GC-TOFMS）用于进行气态流的化学表征，而动态嗅觉法用于进行感官分析。总共选择了95种化合物，它们属于12个不同的VOC家族。主成分分析揭示了每个VOC系列对每个影响类别的影响，并解释了总方差的88％。多变量回归用于研究光化学氧化和气味影响之间的相关性，这是以前从未报道过的。获得的相关性（r≥0.97）证明了这两种影响之间的直接关系。事实证明，光化学氧化和气味排放是堆肥设施对环境的重要影响，