Fisher R M, Barczak R J, Alvarez Gaitan J P, Le-Minh N, Stuetz R M
School of Civil and Environmental Engineering, UNSW, Sydney, Australia E-mail:
Water Sci Technol. 2017 Apr;75(7-8):1617-1624. doi: 10.2166/wst.2017.030.
Opportunities for the beneficial re-use of biosolids are limited by nuisance odour emissions. Volatile organic compounds (VOCs) from anaerobically stabilised biosolids were measured to identify compounds that could contribute to the overall odour character of nuisance emissions. Flux hood sampling and chemical analysis were used to identify VOCs emitted from biosolids as they were stored in ambient conditions. Compounds emitted varied as the biosolid cakes were stored for a period of 50 days. VOCs detected in the biosolids are likely to occur from catchment sources as well as abiotic and biotic generation in the wastewater processing and the biosolids as they are stored. Odour activity values (OAVs) were used to compare odorants. Trimethylamine was the only VOC detected that exceeded the sulfur compounds in terms of OAVs. Other compounds such as limonene, ethyl methyl benzene and acetic acid were detected at concentrations exceeding their olfactory detection limits, however at lower OAVs than sulfur compounds.
生物固体有益再利用的机会受到令人讨厌的气味排放的限制。对厌氧稳定化生物固体中的挥发性有机化合物（VOCs）进行了测量，以确定可能导致令人讨厌排放的整体气味特征的化合物。使用通量罩采样和化学分析来识别生物固体在环境条件下储存时排放的VOCs。随着生物固体饼储存50天，排放的化合物有所不同。生物固体中检测到的VOCs可能来自集水区来源以及废水处理过程中的非生物和生物生成以及储存时的生物固体。气味活性值（OAVs）用于比较气味剂。三甲胺是检测到的唯一一种在OAVs方面超过硫化合物的VOC。其他化合物，如柠檬烯、乙苯和乙酸，其检测浓度超过了嗅觉检测限，但OAVs低于硫化合物。
