Abstract:Seven categories of odorous pollutants released from the collection and transportation process of municipal solid waste (MSW), including ammonia, sulfur compounds, terpenes, aromatics, alcohols, volatile fatty acids (VFAs) and carbonyls, were quantified through different analytical methods. Based on the field data, the compounds mainly causing malodour were assessed and identified. The cancer and non-cancer risk of odor exposure in the circumstance were corrsesponingly estimated by the health risk model. The uncertainties of risk value were estimated by Monte Carlo simulation.The concentration of odorous pollutants in the transfer station was one order of magnitude higher than that in the dust bin, which was closedly associated with the degradation of MSW. The concentration of alcohols increased stably with the extension of transportation chain, whereas the concentrations of VFAs and aromatics increased with fluctuation, and peaked in the bulk transfer station and in the container transfer station (131μg/m3, 711μg/m3respectively). The major odorous compounds at the early stage of transportation were carbonyls, whereas at the end stage were sulfur compounds and VFAs.The adults’ total cancer risk from odor pollution in the bulk transfer station was 2.64×10-5, whereas the total non-cancer risk was 3.01in the bulk transfer sstation and 1.22in the container transfer station, which was closed to or exceeded the maximum acceptable risk levels recommended by US EPA. The risk values in the other transportation points were within the acceptable range.
方晶晶, 章骅, 吕凡, 邵立明, 何品晶. 生活垃圾收运过程中恶臭暴露的健康风险评估[J]. 中国环境科学, 2015, 35(3): 906-916.
FANG Jing-Jing, ZHANG Hua, 吕Fan , SHAO Li-Ming, HE Pin-Jing. Health risk assessment of exposure to odorous pollutants emitted from the transportation process of MSW. CHINA ENVIRONMENTAL SCIENCECE, 2015, 35(3): 906-916.