[temka]

Hi everyone I'm new to this forum. I was wondering how do gold mining industries purify their wastewater, what chemicals they use and how they do it. I've been looking around everywhere but i found nothing they just say it in general something like "They got new machine that can purify it".

- Thanks! 

[Borek]

While there are probably some specific techniques used in gold mines, I would start checking what methods are used in (mining) industry in general.

[AWK]

Google for.
GOLD WASTE WATER TREATMENT
or
GOLD MINE WATER TREATMENT

[Vidya]

Hi everyone I'm new to this forum. I was wondering how do gold mining industries purify their wastewater, what chemicals they use and how they do it. I've been looking around everywhere but i found nothing they just say it in general something like "They got new machine that can purify it".

- Thanks! 

Check this one :
http://www.veoliawatertechnologies.co.za/industrial-water-treatment/markets/mine-water-wastewater-treatment-solutions/