摘要：To investigate the relationship between ventilation modes and volatile organic compounds (VOCs)production and emission properties during sludge composting, two trials were conducted with differentventilation modes, the large ventilation rate for a short ventilation time (T1) and the small ventilation ratefor a long ventilation time (T2). The VOCs were qualitatively and quantitatively monitored by gaschromatography-mass spectrometer (GC-MS). The results show that, the mass concentration ofVOCs produced and emitted in the composting process of T2 is significantly higher than that of T1, thetotal VOC mass concentration of T1 and T2 during sewage sludge composting were 34052.0 µg·m -3and 48476.6 µg·m -3 , respectively. Total VOCs (TVOCs) emission concentration is 710.8 µg·m -3 and1790.8 µg·m -3 , respectively. Compared with the production of TVOCs, the emission of T1 and T2 werereduced by 97.9% and 97.9% respectively; the main VOCs components produced by two treatmentsare different, for T1, the production of olefin is the largest, accounting for 76.43% of the TVOCs. T2produces the largest amount of oxygen-containing organic plant-based VOCs, accounting for 89.23%of the TVOCs. VOCs emission of two treatments during sewage sludge composting have the maximumconcentration of oxygen-containing organic plant-based VOCs. The maximum ozone generation potentialof TVOCs produced by T1 is higher than that of T2, while the maximum ozone generation potential ofTVOCs emitted by T1 is lower than that of T2, in the process from produce to emission, the TVOCsmaximum ozone generating potential of T1 and T2 were reduced by 99.2% and 96.1%, respectively.In order to control the secondary pollution to the environment caused by the emission of VOCs duringthe sludge composting, the ventilation mode of T1 is recommended.
