[Odor Emission Characteristics and Pollution Evaluation from Typical Household Rubbish Disposal Facilities]

In order to study the characteristics of odors from typical household rubbish disposal facilities, samples were taken from pretreatment workshops of the landfill process, incineration process, and composting process in Beijing, and cold enrichment-GC/MS was used to determine the odor component qualitatively and quantitatively. Results indicated that six categories were detected in all samples: aromatic hydrocarbons, sulfides, halides, olefins, alkanes, and oxygen containing organic substances. In the pretreatment workshop of the landfill process, 50 kinds of chemicals were detected, the total odor concentration was 100.069 mg·m^-3, the theoretical odor concentration was 350.611, and the comprehensive odor index was 25.448. In the pretreatment workshop of the incineration process, 55 kinds of chemicals were detected, the total odor concentration was 36.052 mg·m^-3, the theoretical odor concentration was 141.434, and the comprehensive odor index was 21.506. In the pretreatment workshop of the composting process, 34 kinds of chemicals were detected, the total odor concentration was 25.382 mg·m^-3, the theoretical odor concentration was 27.547, and the comprehensive odor index was 14.401. Combined with the threshold of diluted multiples, the particular pollutants of the pretreatment workshop of the landfill process were dimethyl disulfide, butyl acetate, p-diethylbenzene, and ethanol. Similarly, the particular pollutants of the pretreatment workshop of the incineration process were methanethiol, dimethyl disulfide, ethanol, and limonene. The particular pollutants of the pretreatment workshop of the composting process were ethanol, dimethyl disulfide, butyl acetate, and limonene.