The use and recirculation of powdered activated carbon (PAC) as an advanced treatment for colour removal in municipal wastewater treatment plants is presented. Studied wastewaters consist of domestic effluents with a high portion of dyehouse residual waters. The particularity of the treatment is that PAC is not disposed of before being recirculated several times. Therefore, it enables the use of a great part of the total adsorption capacity of the PAC. A positive side effect is that halogenated and refractory organic compounds, which are not degraded by micro-organisms in a conventional municipal wastewater treatment plant, are removed too. This paper describes results which were obtained in batch experiments and in a pilot plant during two years of observation, and concludes with advantages and drawbacks of this technology.
Research Article|July 01 1999
Recirculation of powdered activated carbon for the adsorption of dyes in municipal wastewater treatment plants
Water Sci Technol (1999) 40 (1): 191-198.
L. Nicolet, U. Rott; Recirculation of powdered activated carbon for the adsorption of dyes in municipal wastewater treatment plants. Water Sci Technol 1 July 1999; 40 (1): 191–198. doi: https://doi.org/10.2166/wst.1999.0041
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