Analysis of Odor of Treated Wastewater by Gas Chromatography with Olfactometry Detection
Analysis of Odor of Treated Wastewater by Gas Chromatography with Olfactometry Detection
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DOI：
10.2965/jswe.41.11
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发表时间：
2018
期刊：
影响因子：
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通讯作者：
T. Urase;H. Tsutsui;Kazuya Nakamura
中科院分区：
文献类型：
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作者：
T. Urase;H. Tsutsui;Kazuya Nakamura
对来自七个不同工厂的生物处理废水样品进行气相色谱嗅觉分析，以澄清导致生物处理废水气味的化合物。在生物反应器有屋顶的大型工厂处理后的废水样品中，检测到2,4,6-三氯苯甲醚的气味强度最高或第二高。这些大型工厂处理后的废水中含有11.6-21.2 ng·L 2,4,6-三氯苯甲醚，这个浓度范围大约是嗅觉阈值的100倍。所有样品中都检测到了高气味强度的泥土味和霉味，可能是由土臭素和 2-甲基异冰片引起的。在处理过的水样的分析中还观察到一种具有甜味的不明化合物的很大贡献。除了土味和霉味外，在小型工厂的样品中还检测到了硫酸和化粪池的气味。
A gas chromatography olfactometry analysis was conducted for biologically treated wastewater samples from seven diff erent plants to clarify the compounds responsible for the odor of biologically treated wastewater. The odor of 2,4,6-trichloroanisole was detected with the highest or second-highest odor intensity for the treated wastewater samples from large-scale plants whose biological reactors are covered with a roof. The treated wastewater from these large-scale plants contained 11.6–21.2 ng L of 2,4,6-trichloroanisole, and this range of concentration was approximately 100 times as high as the olfactory threshold. Earthy and musty odors, probably caused by geosmin and 2-methylisoborneol, were also detected with high odor intensities in all samples. A large contribution of an unidentifi ed compound with a sweet odor was also observed in the analysis of treated water samples. In addition to earthy and musty odors, sulfuric and septic odors were detected in the samples from small-scale plants.