In this work, a synthetic TCF effluent containing vanillin, glyoxal, sodium formate, sodium acetate and the chelanting agents EDTA and DTPA was treated using, O3, O3/H2O2, O3/UV, UV, UV/H2O2 and UV/H2O2/O3 at pH 7 and 11. The best results were obtained in the O3/UV process. Ozone alone did not degrade EDTA neither DTPA. A combined O3/UV (pH 7.0 by 15 min)-biological treatment was very efficient in the removal of the chelants (98 %) and COD (95 %).
Chemical Degradation of EDTA and DTPA in a Totally Chlorine Free (TCF) Effluent
J. B. Rodríguez, A. Mutis, M. C. Yeber, J. Freer, J. Baeza, H. D. Mansilla; Chemical Degradation of EDTA and DTPA in a Totally Chlorine Free (TCF) Effluent. Water Sci Technol 1 December 1999; 40 (11-12): 267–272. doi: https://doi.org/10.2166/wst.1999.0721
Download citation file: