Sludge formation in the activated sludge process with a sludge disintegration unit

Asma Alharbi, Mark Ian Nelson, Annette Worthy, Harvinder Sidhu

Abstract


The activated sludge process is one of the major aerobic processes used in the biological treatment of wastewater. A significant drawback of this process is the production of excess `sludge', the disposal of which can account for 50--60% of the running costs of a plant. We investigate how the volume and mass of excess sludge produced is reduced by coupling the bioreactor to a sludge disintegration unit.

References
  • A. O. M. Alharbi, M. I. Nelson, A. L. Worthy, and H. S. Sidhu. Sludge formation in the activated sludge process: Mathematical analysis. In Proc. Australasian Chem. Eng. Conf., Chemeca 2013. Chemical College, Engineers Australia, 2013. www.conference.net.au/chemeca2013/papers/29490.pdf
  • Y.-C. Chung and J. B. Neethling. Viability of anaerobic digester sludge. J. Environ. Eng., 116(2):330–342, 1990. doi:10.1061/(ASCE)0733-9372(1990)116:2(330)
  • M. I. Nelson, T. Kerr, and X. D. Chen. A fundamental analysis of continuous flow bioreactor and membrane reactor models with death and maintenance included. Asia-Pac. J. Chem. Eng., 3:70–80, 2008. doi:10.1002/apj.106
  • S.-H. Yoon. Important operational parameters of membrane bioreactor-sludge disintegration (MBR-SD) system for zero excess sludge production. Water Res., 37(8):1921–1931, 2003. doi:10.1016/S0043-1354(02)00578-X

Keywords


activated sludge; CSTR; sludge disintegration unit; wastetreatment

Full Text:

PDF BIB


DOI: http://dx.doi.org/10.21914/anziamj.v55i0.7803



Remember, for most actions you have to record/upload into this online system
and then inform the editor/author via clicking on an email icon or Completion button.
ANZIAM Journal, ISSN 1446-8735, copyright Australian Mathematical Society.