Nature Environment and Pollution Technology

Open Access Open Access  Restricted Access Subscription Access

Effect of Ventilation Modes on Production and Emission of Volatile Organic Compounds During Sewage Sludge Composting


Affiliations
1 Zhengzhou University of Light Industry, Collaborative Innovation Center of Environmental Pollution Control and Ecological Restoration, Henan Province, Zhengzhou 450001, China
 

To investigate the relationship between ventilation modes and volatile organic compounds (VOCs) production and emission properties during sludge composting, two trials were conducted with different ventilation modes, the large ventilation rate for a short ventilation time (T1) and the small ventilation rate for a long ventilation time (T2). The VOCs were qualitatively and quantitatively monitored by gas chromatography-mass spectrometer (GC-MS). The results show that, the mass concentration of VOCs produced and emitted in the composting process of T2 is significantly higher than that of T1, the total VOC mass concentration of T1 and T2 during sewage sludge composting were 34052.0 μg·m-3 and 48476.6 μg·m-3, respectively. Total VOCs (TVOCs) emission concentration is 710.8 μg·m-3 and 1790.8 μg·m-3, respectively. Compared with the production of TVOCs, the emission of T1 and T2 were reduced by 97.9% and 97.9% respectively; the main VOCs components produced by two treatments are different, for T1, the production of olefin is the largest, accounting for 76.43% of the TVOCs. T2 produces 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 maximum concentration of oxygen-containing organic plant-based VOCs. The maximum ozone generation potential of TVOCs produced by T1 is higher than that of T2, while the maximum ozone generation potential of TVOCs emitted by T1 is lower than that of T2, in the process from produce to emission, the TVOCs maximum 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 during the sludge composting, the ventilation mode of T1 is recommended.

Keywords

Sewage Sludge, Composting, Ventilation Mode, VOCs, Ozone Generation.
User
Notifications
Font Size


  • Carter W.P.L. 1994. Development of ozone reactivity scales for volatile organic compounds. J. Air & Waste, 44(7): 881-889.

  • Chen, W. T., Shao, M. and Yuan, B. 2013. Parameterization of contribution to secondary organic aerosol (SOA) formation from ambient volatile organic compounds (VOCs). Acta Scientiae Circumstantiae, 33(1): 163-172.

  • Eitzer, B.D. 1995. Emissions of volatile organic chemicals from municipal solid waste composting facilities. Environmental Science and Technology, 29: 896-902.

  • Hanajima, D., Kuroda, K. and Morishita, K. 2010. Key odor components responsible for the impact on olfactory sense during swine feces composting. Bioresource Technology, 101(7): 2306-2310.

  • Komilis, D. P., Ham, R. K. and Park, J. K. 2004. Emission of volatile organic compounds during composting of municipal solid wastes. Water Research, 38: 1707-1714.

  • Kumar, A., Alaimo, C.P., Horowitz, R., Mitloehner, F.M., Kleeman, M.J. and Green, P.G. 2011. Volatile organic compound emissions from green waste composting: Characterization and ozone formation. Atmospheric Environment, 45(10): 1841-1848.

  • Shen, Y.J., Chen, T.B., Gao, D. Zheng, G,D., Liu, H,T. and Yang, Q.W. 2012. Online monitoring of volatile organic compound production and emission during sewage sludge composting. Bioresource Technology, 123: 463-470.


Abstract Views: 165

PDF Views: 0




  • Effect of Ventilation Modes on Production and Emission of Volatile Organic Compounds During Sewage Sludge Composting

Abstract Views: 165  |  PDF Views: 0

Authors

Chuang Ma
Zhengzhou University of Light Industry, Collaborative Innovation Center of Environmental Pollution Control and Ecological Restoration, Henan Province, Zhengzhou 450001, China
Pei-Pei Su
Zhengzhou University of Light Industry, Collaborative Innovation Center of Environmental Pollution Control and Ecological Restoration, Henan Province, Zhengzhou 450001, China
Ji-Hong Zhao
Zhengzhou University of Light Industry, Collaborative Innovation Center of Environmental Pollution Control and Ecological Restoration, Henan Province, Zhengzhou 450001, China
Hong-Zhong Zhang
Zhengzhou University of Light Industry, Collaborative Innovation Center of Environmental Pollution Control and Ecological Restoration, Henan Province, Zhengzhou 450001, China
Ming-Bao Wei
Zhengzhou University of Light Industry, Collaborative Innovation Center of Environmental Pollution Control and Ecological Restoration, Henan Province, Zhengzhou 450001, China

Abstract


To investigate the relationship between ventilation modes and volatile organic compounds (VOCs) production and emission properties during sludge composting, two trials were conducted with different ventilation modes, the large ventilation rate for a short ventilation time (T1) and the small ventilation rate for a long ventilation time (T2). The VOCs were qualitatively and quantitatively monitored by gas chromatography-mass spectrometer (GC-MS). The results show that, the mass concentration of VOCs produced and emitted in the composting process of T2 is significantly higher than that of T1, the total VOC mass concentration of T1 and T2 during sewage sludge composting were 34052.0 μg·m-3 and 48476.6 μg·m-3, respectively. Total VOCs (TVOCs) emission concentration is 710.8 μg·m-3 and 1790.8 μg·m-3, respectively. Compared with the production of TVOCs, the emission of T1 and T2 were reduced by 97.9% and 97.9% respectively; the main VOCs components produced by two treatments are different, for T1, the production of olefin is the largest, accounting for 76.43% of the TVOCs. T2 produces 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 maximum concentration of oxygen-containing organic plant-based VOCs. The maximum ozone generation potential of TVOCs produced by T1 is higher than that of T2, while the maximum ozone generation potential of TVOCs emitted by T1 is lower than that of T2, in the process from produce to emission, the TVOCs maximum 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 during the sludge composting, the ventilation mode of T1 is recommended.

Keywords


Sewage Sludge, Composting, Ventilation Mode, VOCs, Ozone Generation.

References