2. Chemical treatments

2.1 Redox

The aim of redox waste treatment is to transform pollutants:

or in a form that is less harmful to the environment and can be discharged into the natural environment:
- when cyanides or organic molecules are oxidized: cyanide ions CN ^- are thus oxidized into less dangerous cyanate ions CNO ^- :
  ${CN}^{-} + {ClO}^{-} \to {Cl}^{-} + {CNO}^{-}$

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Chemical treatments

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Physico-chemical treatments

Bibliography

(1) - BYRNES BROWER (J.), RYAN (R.L.), PAZIRANDEH (M.) - Comparison of ion-exchange resins and biosorbents for the removal of heavy metals from plating factory wastewater. - Environ.Sci.technol, n° 31, p. 2910-2914 (1997).
(2) - FRENZEL (I.), HOLDIK (H.), STAMATIALIS...

Regulations

Arrêté du 2 février 1998 relatif aux prélèvements et à la consommation d'eau ainsi que aux émissions de toute nature des installations classées pour la protection de l'environnement soumises à autorisation (JO du 3 mars 1998).

Order of April 9, 2019 amending the order of June 30, 2006 on surface treatment facilities subject to authorization under heading 2565 (metallic coating or surface treatment...