Optimal Use of Ozonation and GAC in Direct Filtration for Drinking Water Treatment

  • John E. Tobiason
Conference paper


Results from pilot studies of the use of ozonation and biologically active GAC media to upgrade two existing direct filtration facilities are summarized. A comparison of preozonation followed by GAC filter media to post-filtration ozonation followed by a GAC contactor is made based on various aggregate measures of organic matter including DOC, THMFP, HAAFP, AOC and odors. The results show that ozonation and biologically active GAC media improve organic matter removal. For one plant, preozonation and post-ozonation at similar ozone to DOC ratios and GAC contact times produces very similar water quality while at the other plant, the post-ozonation option is significantly better. The choice of the location for ozonation and GAC at these facilities will ultimately depend on water quality goals and disinfection needs.


Granular Activate Carbon Drinking Water Treatment Particle Removal Coagulant Dose Direct Filtration 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. [1]
    Langlais, B., Reckhow, D.A., Brink, D.R., editors: Ozone in Water Treatment, Application and Engineering. American Water Works Association Research Foundation, Compagnie Geneale des Eaux, Lewis Publ., Chelsea, Michigan (1991).Google Scholar
  2. [2]
    Sontheimer, H., Crittenden, J.C., Summers, R.S.: Activated Carbon for Water Treatment. DVGW-Forschungsstelle, Engler-Bunte-Institut, Universitt Karlsruhe (1988).Google Scholar
  3. [3]
    Krasner, S.W., Sclimenti, M.J., Coffey, B.M.: Testing Biologically Active Filters for Removing Aldehydes Formed During Ozonation. Journal AWWA, 85:5 (1993) 62.Google Scholar
  4. [4]
    Graese, S.L., Snoeyink, V.L., Lee, R.G.: Granular Activated Carbon Filter-Adsorber Systems. J AWWA, 79:12 (1987) 64.Google Scholar
  5. [5]
    Tobiason, J.E., Edzwald, J.K., Schneider, O.D., Fox, M.B., Dunn, H.J.: Pilot Study of the Effects of Ozone and PEROXONE on In-Line Direct Filtration. Journal AWWA, 84:12 (1992) 72.Google Scholar
  6. [6]
    Tobiason, J.E., Edzwald, J.K., Reckhow, D.A., Switzenbaum, M.S.: Effect of Pre-Ozonation on Organics Removal by In-Line Direct Filtration. Wat. Sci. Techn. 27(11) (1993) 81.Google Scholar
  7. [7]
    Reckhow, D.A., Tobiason, J.E., Switzenbaum, M.S., McEnroe, R., Xie, Y., Zhu, Q., Zhou, X., McLaughlin, P., Dunn, H.J.: Control of Disinfection Byproducts and AOC by Pre-Ozonation and Biologically-Active In-Line Direct Filtration. Proceedings of 1992 American Water Works Association Annual Conference, Vancouver, B.C., 1992, p.487.Google Scholar
  8. [8]
    Standard Methods for the Examination of Water and Wastewater, 18th Edition. American Public Health Assoc, American Water Works Assoc, Water Environment Federation, Washington, D.C., 1993.Google Scholar
  9. [9]
    van der Kooij, D., Hijnen, W.A.M., Kruithof, J.C.: The Effects of Ozonation Biological Filtration, and Distribution on the Concentration of Easily Assimilable Organic Carbon in Water. Ozone Sci. Techn. 11(3) (1989) 297.CrossRefGoogle Scholar
  10. [10]
    Koch, B. et al.: Analysis of Halogenated Disinfection By-Products by Capillary Chromatography. AWWA Water Quality Technology Conference 1988.Google Scholar
  11. [11]
    Glaze, W.R., Konga, M., Cancilla, D.: Ozonation By-Products. 2. Improvement of an Aqueous-Phase Derivatization Method for Detection of Formaldehyde and Other Carbonyl Compounds Formed by Ozonation of Drinking Water. Environm. Sci. Techn. 23(7) (1989) 838.CrossRefGoogle Scholar
  12. [12]
    Xie, Y., Springborg, D., Reckhow. D.A.: Analysis of HAAs and Ketoacids Without Diazomathane. Proceedings of 1993 American Water Works Association Water Quality Technology Conference, Miami, Florida, November, 1993.Google Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 1994

Authors and Affiliations

  • John E. Tobiason
    • 1
  1. 1.Department of Civil and Environmental EngineeringUniversity of MassachusettsAmherstUSA

Personalised recommendations