Chemical degradation of EDTA and DTPA in a totally chlorine free (TCF) effluent
- 1 January 1999
- journal article
- Published by IWA Publishing in Water Science & Technology
- Vol. 40 (11-12)
- https://doi.org/10.1016/s0273-1223(99)00727-1
Abstract
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 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 %).Keywords
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