AWWA WQTC64014

Processes currently used to treat resources from Brittany, especially the ones in Rennes, are not efficient enough for a significant removal of dissolved natural organic matter. Trials were carried out with powdered activated carbon (PAC) and settled water which indicated good removal rates. Hence a pilot unit based on the coupling of membranes and PAC was set up in the drinking water treatment plant of Rennes Villejean, France. On one hand, physical-chemical parameters (DOC, UV absorbance, SDI...) enable us to characterize the dissolved organic matter removal, and on the other hand, a continuous data acquisition was set up to get hydraulic parameters. Two main periods of pilot experiments were carried out using three identical reactors in parallel. Includes 6 references, tables, figures.