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Article | REF: M1801 V1

Waste water treatment in surface treatment workshops

Author: Alain VIDONNE

Publication date: September 10, 2009, Review date: September 1, 2017 | Lire en français

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    1. Conventional" continuous physico-chemical treatment

    The general processing flow chart is shown in figure 1 . The main processing stages are :

    • storage ;

    • any pre-treatments (de-oiling of degreasing effluents, reduction of chromium VI ions, oxidation of cyanide anions);

    • metal ion neutralization/precipitation ;

    • flocculation if necessary;

    • solid/liquid separation ;

    • sludge treatment ;

    • any liquid refining treatments;

    • effluent controls.

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