Mine Water Treatment Plant – Alaska

Groups Involved

Water and Wastewater

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Project Execution


  • Secondary treatment of HDS plant effluent and TMF supernatant to remove dissolved metals (particularly copper), nitrate and selenium to meet discharge criteria for the receiving environment.
  • Plant design capacity = 18,980 m3/day.
  • Major Process Equipment:
    • High Density Sludge Metals Removal Treatment
    • Biological Nitrate and Selenium Treatment
    • Reagent Dosing
    • Process Tanks
    • Multi Step Clarification
    • Rotary Drum Sludge Dewatering
  • Process technical tradeoff analysis and selection, engineering, 3 D plant modelling, and Class 4 cost estimating.
  • Provided NI 43 101 Qualified Person signoff on feasibility study.
  • Scope of work executed under tight schedule; technology tradeoff analysis, feasibility level WTP engineering and cost estimating completed within 6 weeks.