The Development Of A Treatment Process For The Mine Water Containing Arsenic And Thiocyanate From Lab Scale To Pilot Plant Scale

Mise au point d'un procédé de traitement de l'eau de mine contenant de l'arsenic et du thiocyanate, de l'échelle du laboratoire à l'échelle de l'unité pilote

Stéphane Vaxelaire (1) , Bastien Jally , Fabienne Battaglia-Brunet (1) , Jérôme Jacob (1)

1 BRGM - Bureau de Recherches Géologiques et Minières (BRGM)

About 8 million metric tons storage of cyanidation tailings from a former French gold mine produces a 10 m 3 /h mine drainage that contains around 8 mg/L of As and 1 g/L of SCN-and is currently treated with a lime process. The existing treatment plant produces large amounts of sludge reflecting the large amounts of sulfate present in water and calcium from lime. The present study aims to developing a semi-passive mine water treatment process that would produce a lower amount of sludge and improve the treatment efficiency with a target discharge level under 100 µg/L of Arsenic.

Domains: Environmental Sciences; Environmental Engineering; Chemical and Process Engineering

Stéphane Vaxelaire, Bastien Jally, Fabienne Battaglia-Brunet, Jérôme Jacob. The Development Of A Treatment Process For The Mine Water Containing Arsenic And Thiocyanate From Lab Scale To Pilot Plant Scale. International Mine Water Association Conference - IMWA 2019, Jul 2019, Perm, Russia. ⟨hal-02123794⟩