Nature Environment and Pollution Technology

Open Access Open Access  Restricted Access Subscription Access

Impact of Ultrasonication-Ozonation Pretreatment on Anaerobic Digestion of Sewage Sludge


Affiliations
1 School of Civil Engineering and Architecture, Wuhan Polytechnic University, Wuhan, 430023, China
 

The increase in the number of wastewater treatment plants and the sewage sludge makes it necessary to improve the efficiency of anaerobic digestion of sludge. Pretreatment of sewage sludge has shown important advantages in the sludge anaerobic digestion. This study investigated the effect of using ultrasonication-ozonation pretreatment on the anaerobic digestion process. It can be seen that this treatment effectively led to the increase of soluble chemical oxygen demand (SCOD). The optimal specific energy input was 6000 kJ/kg TS and the ozonation dosage was 0.10 g O3/g TS. Under the optimum combined pretreatment condition, the biogas production was nearly 4-8 times than the raw sludge sample. It could be concluded that the combined pretreatment of sludge improved the anaerobic digestion of the sewage sludge.

Keywords

Sewage Sludge, Anaerobic Digestion, Biogas Production, Combined-Pretreatment.
User
Notifications
Font Size


  • Antti, G., Hanna, K., Kirsi, K., Pentti, P., Teija, P., Jari, J. and Jukka, R. 2005. Ultrasound assisted method to increase soluble chemical oxygen demand (SCOD) of sewage sludge for digestion. Ultrason. Sonochem., 12: 115-120.

  • APHA, AWWA, WPCF, 1998. Standard Methods for the Examination of Water and Wastewater. Twentieth ed., American Public Health Association, Washington D.C.

  • Braguglia, C.M., Gagliano, M.C. and Rossetti, S. 2012. High frequency ultrasound pretreatment for sludge anaerobic digestion: Effect on floc structure and microbial population. Bioresource Technol., 110: 43-49.

  • Braguglia, C.M., Gianico, A. and Mininni, G. 2011. Laboratoryscale ultrasound pre-treated digestion of sludge: Heat and energy balance. Bioresource Technol., 102: 7567-7573.

  • Deng, S.H., Tan, H.Z., Wang, X.B., Yang, F.X., Cao, R.J., Wang, Z. and Ruan, R.H. 2017. Investigation on fast co-pyrolysis of sewage sludge with biomass and the combustion reactivity of residual char. Bioresource Technol., 239: 302-310.

  • Deng, W.Y., Yan, J.H., Li, X.D., Wang, F., Lu, S.Y., Chi, Y. and Cen, K.F. 2009. Measurement and simulation of the contact drying of sewage sludge in a Nara-type paddle dryer. Chem. Eng. Sci., 64(24): 5117-5124.

  • El-Hadj, T.B., Dosta, J., Márquez-Serrano, R. and Mata-Álvarez, J. 2007. Effect of ultrasound pretreatment in mesophilic and thermaophilic anaerobic digestion with emphasis on naphthalene and pyrene removal. Water Research, 41: 87-94.

  • Kameswari, K.S.B., Kalyanaraman, C. and Thanasekaran, K. 2011, Effect of ozonation and ultrasonication pretreatment processes on co-digestion of tannery solid wastes. Clean Technologies and Environmental Policy, 13(3): 517-525.

  • Mavi, C., Ivet, F., Ma, D.M.B., Adriana, A., Felícitas, V. and Xavier, F. 2007. Effects of thermal and mechanical pretreatments of secondary sludge on biogas production under thermophilic conditions. Chem. Eng. J., 133: 335-342.

  • Syed, S.A., Syed, H., Wang, Y., Hu, S., Su, S. and Xiang, J. 2017. Thermochemical processing of sewage sludge to energy and fuel: Fundamentals, challenges and considerations. Renew. Sust. Energ. Rev., 80: 888-913.

  • Xu, Y., Lu, Y.Q., Dai, X.H. and Dong, B. 2017. Evaluating the biogas conversion potential of sewage sludge by surface site density of sludge particulate. Chem. Eng. J., 327: 1184-1191.


Abstract Views: 391

PDF Views: 0




  • Impact of Ultrasonication-Ozonation Pretreatment on Anaerobic Digestion of Sewage Sludge

Abstract Views: 391  |  PDF Views: 0

Authors

Wei Na
School of Civil Engineering and Architecture, Wuhan Polytechnic University, Wuhan, 430023, China

Abstract


The increase in the number of wastewater treatment plants and the sewage sludge makes it necessary to improve the efficiency of anaerobic digestion of sludge. Pretreatment of sewage sludge has shown important advantages in the sludge anaerobic digestion. This study investigated the effect of using ultrasonication-ozonation pretreatment on the anaerobic digestion process. It can be seen that this treatment effectively led to the increase of soluble chemical oxygen demand (SCOD). The optimal specific energy input was 6000 kJ/kg TS and the ozonation dosage was 0.10 g O3/g TS. Under the optimum combined pretreatment condition, the biogas production was nearly 4-8 times than the raw sludge sample. It could be concluded that the combined pretreatment of sludge improved the anaerobic digestion of the sewage sludge.

Keywords


Sewage Sludge, Anaerobic Digestion, Biogas Production, Combined-Pretreatment.

References