国内成功运营的餐厨垃圾处理厂臭气排放特征研究

选择目前国内成功运营的餐厨垃圾资源化处理厂为采样点，采用气相色谱．质谱联用（GC／MS）技术对该厂的主要工段，如卸料室、破碎室、湿热反应器出气口、好氧发酵仓、厌氧发酵区以及厂界的臭气进行了定性和定量的分析。结果表明，6个采样点共检测出包括芳香烃、硫化物、卤代物、烯烃、烷烃、醇、醛、酮和酯在内的9类66种物质，各采样点臭气总浓度分别为：11．738、18．390、30．917、25．097、4．737和2．635mg／m3。其中湿热反应器出气口处恶臭气体浓度最高，其芳香烃、硫化物、卤代物、烯烃、烷烃、酮及酯类物质均高于其他检测点，需对该工段进行重点监测和控制。恶臭排放特征分析表明，各点的H2S浓度均超过嗅觉阈值，除厂界外甲硫醇和二甲二硫检测值均超过嗅觉阈值。

Study on characterization of odors from successful food waste treatment plant

Samples were taken from a successful food waste treatment plant in China. Odors from different sections, such as unloading room, breaker room, the vent of hydrothermal reactor, aerobic fermentation reactor, anaerobic fermentation zone and the boundary, were analyzed qualitatively and quantitatively by gas chromatogra- phy and mass spectrometry detection （ GC/MS）. 66 kinds of chemicals were detected in the above six samples, including aromatic hydrocarbon, sulfide, halide, olefins, alkane, ethanol, aldehyde, ketone and ester, and the total concentration of odors were 11. 738, 18. 390, 30. 917, 25. 097, 4.737 and 2. 635 mg/m3 , respectively. The vent of hydrothermal reactor contained highest concentration of odors, and the concentrations of aromatic hy- drocarbon, sulfide, halide, olefins, alkane, ketone and ester at this site were higher than others＇ Therefore, this process should be intensively monitored and controlled. The analysis of odor characterization indicated that concentrations of H2S at six sampling sites exceeded the odor threshold. The concentrations of methyl mercaptan and dimethyl disulfide of the sites also exceeded the odor threshold except the boundary.