Mining

Mining activities produce wastewater that typically contain a cocktail of dissolved metals, sulphate, selenium, nitrate, ammonia and cyanide that are present at levels exceeding environmental discharge regulations and/or limit or prevent water re-use.

Mining

Streams Treated

  • Run-off
  • Mine drainage including acid rock drainage
  • Waste rock seepage
  • Tailings water
  • Groundwater
  • Lime plant influent and/or effluent

Constituents Treated

Metals
Sulphate
Selenium
Cyanide

We Help Customers

  • Comply with environmental regulations
  • Lower life cycle costs
  • Eliminate/minimize waste residues
  • Recover value from waste
  • Recycle, re-use or conserve water
  • Reduce and manage technical risks

Smelting & Refining

Metal smelting and refining produces waste streams requiring treatment prior to discharge. These streams often also contain valuable constituents that can be recovered.

Smelting & Refining

Streams Treated

  • Treatment of weak acid blow-down from gas scrubbers at smelting operations
  • Arsenic removal and waste sludge minimization
  • Recovery of valuable metals
  • Electrolyte purification or bleed
  • Removal of impurities from electrolyte (bismuth, antimony)
  • Recovery of valuable metals (copper)
  • Metallurgical dusts processing

Constituents Treated

Metals
Sulphate

We Help Customers

  • Comply with environmental regulations
  • Lower life cycle costs
  • Eliminate/minimize waste residues
  • Recover valuable metals from waste
  • Generate revenue from waste
  • Reduce and manage technical risks

Hydrometallurgy

Extracting metals from mineral deposits using aqueous solutions involves various purification and concentration processes that leave behind undesirable constituents that exceed environmental regulations.

Hydrometallurgy

Streams Treated

  • Gold and silver complexed cyanidation circuits
  • Acid and/or metal recovery from autoclave discharge CCD wash solution
  • Metal recovery from bleed streams
  • Decommissioning of copper heap leach operations
  • Replacing NaHS with Ca(HS)2 in copper-molybdenum separation flotation circuits

Constituents Treated

Metals
Cyanide
Acid

We Help Customers

  • Improve metal recovery
  • Recover cyanide and reduce cyanide destruction costs
  • Eliminate/minimize residual toxic waste and liabilities
  • Eliminate/minimize transportation of toxic chemicals to mine sites and landfills
  • Reduce and manage technical risks