• AWWA JAW28840
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AWWA JAW28840

  • Journal AWWA - Microbial Activity in GAC Filters at the Choisy-le-Roi Treatment Plant
  • Journal Article by American Water Works Association, 02/01/1991
  • Publisher: AWWA

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To maintain the biological stability of drinking water during distribution in large, complex networks, high standards have to be met--namely, low bacterial densities and low levels of biodegradable organic carbon. Second-stage granular activated carbon (GAC) filtration (without regeneration of carbon) is used for this purpose at the Choisy-le-Roi, Paris, France, treatment plant. Effective removal of dissolved organic carbon has been observed with such filtration--mainly because of a reduction in the biodegradable organic carbon. To study the microbial processes involved in this removal, new methods based on the use of radio-labeled tracers have been developed in order to measure the bacterial biomass and activity associated with GAC. Includes 26 references, tables, figures.

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