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Article | REF: C5201 V1

Distribution water - Specific treatments

Author: Hugues GODART

Publication date: May 10, 2000

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3. Treatment by-products

Box 1 – Identifying treatment by-products

1.solid by-products

  • Hydroxide sludge :

    • from conventional processes: essentially floc accumulations collected at the bottom of decanters and containing :

      • suspended matter in the river,

      • those which were in solution and which we managed to render insoluble and decant during processing,

      • powdered activated carbon with organic matter trapped in its pores,

      • iron or aluminium hydrate precipitates formed by coagulating reagents;

    • from specific processes: deferrisation, demanganisation.

  • ...

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