Research on COD Removal and SOUR of Aerobic Granule with Intermittent Aeration in Continuous Flow System

Abstract:

The impact of intermittent aeration on aerobic granular sludge in a continuous flow reactor was studied. Nine intermittent aeration modes were set up to investigate the change of DO, pH, COD removal efficiency and SOUR. The results showed DO and pH had different change tendencies. The 3-1 mode was the optimal mode under these experiment conditions. In aerating stage, the highest COD removal efficiency could achieve 96.32%. Stopping aeration for one hour, COD removal efficiency could still reach at 90.20%. This operation mode could save about 25% energy consumption theoretically. The comparison of SOUR between continuous aeration and 4-2 mode showed that the intermittent aeration had little effect on granular sludge activity. The theory of stress & damage and unbalanced growth could explain this appearance.

• Periodical: Advanced Materials Research (Volumes 518-523)
• Pages: 478-484
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.518-523.478
• Online since: May 2012
• Authors: Feng Deng, Rui Zhang
• Keywords: Aerobic Granule, Continuous Flow, Intermittent Aeration, Sour

References

[1] T.R. Long, J.S. Guo, X. Gao, et al.: China Environmental Science Vol.20 (2000), p.366 (in Chinese).

[2] T.Y. Huang and G.M. Sun: Journal of Suzhou Institute of Urban Construction and Environmental Protection Vol.14 (2001), p.22 (in Chinese).

[3] Y. Liu and J.H. Tay: Biotechnology Advances Vol.22 (2004), p.533.

[4] D.P. Cassidy and E. Belia: Water Research Vol.39 (2005), p.4817.

[5] N. Schwarzenbeck, J.M. Borge and P.A. Wilderer: Applied Microbiology and Biotechnology Vol.66 (2005), p.711.

[6] J.M. Garrido: Water Research Vol.38 (2004), p.3389.

[7] K.Z. Su and H.Q. Yu: Environmental Science and Technology Vol.39 (2005), p.818.

[8] M.K. de Kreuk, J. J.Heijnen and M.C.M. van Loosdrecht: Biotechnology and Bioengineering Vol.90 (2005), p.761.

[9] A.N. Anuar, Z. Ujang, M.C.M. van Loosdrecht, et al.: Water Science and Technology Vol.56 (2007), p.55.

[10] J.H. Tay, H.L. Jiang and S.T.L. Tay: Journal of Environmental Engineering-ASCE Vol.130 (2004a), p.1415.

[11] B.Y.P. Moy, J.H. Tay, S.K. Toh, et al.: Letters in Applied Microbiology Vol.34 (2002), p.407. [12] APHA: Standards Methods for the Examination of Water and Wastewater, 20th (American Public Health Assoc., Washington, DC, USA, 1998).

[13] G.H. Chen, W.K. Yip, H.K. Mo, et al.: Water Research Vol.35 (2001), p.1029.

[14] M. Majone, K. Dircks and J.J. Beun: Water Science and Technology Vol.39 (1999), p.61.