Seasonal Variations in Odorous Compounds Emission from A Municipal Solid Waste Disposal Plant

摘要

Waste treatment plants are among the major sources of odor nuisances and health risk to workers and nearbyresidents. In this work, we present an assessment of the seasonal variations in volatile compounds emissionand the odor nuisance effects from a waste treatment plant. Air samples were seasonally collected in fourdifferent processing units in the plant, and analyzed by both instrumental and sensory methods. Resultsshowed that a total of 17, 27, 23 and 14 volatile compounds were detected in the air samples collected in thefour seasons, with average total chemical concentration of 1515.4, 5364.7, 3282.5 and 1067.6 μg m~（-3). On theother hand, the non-carcinogenic risk of H_2S (1.7 and 1.3 in summer and autumn) and dichloromethane (1.7 insummer) exceeded the acceptable risk levels (HI = 1). Carcinogenic risk of ethylbenzene ranged from 2.1E-05to 4.2E-05 in spring, autumn and winter, exceeding the acceptable carcinogenic risk level (1.0E-06). Moreover,the carcinogenic risk of tetrachloroethylene and ethylbenzene was larger than 1.0E-04 and reached the levelof “definite risks” in summer.