Mobile Water Treatment Plant ID: 1628523

Mobile Water Treatment Plant

• Make: Applied Water Treatment Inc.
• Model/Type: Mobile Water Treatment Plant
• Style: Mobile / Portable
• Year: 2021
• Condition: Used Condition
  
  
• Flowrate: Up To 1,296 m³/day (342,367 US Gallons Per Day)
• Water Chemistry: Remove Heavy Metals Including; Al, As, Cd, Cu, Fe²⁺, Fe³⁺, Mn, Mg, Ni, Pb, Zn, SO₄
• Mobile: Plant On 53ft Trailer That Can Be Driven to the Site
• Process Uses Hydrated Lime to Remove Heavy Metals to Meet Compliance
• Automated Process Control Producing Consistent Water Quality
• Plant Used at Sites to Meet Environment Canada and EPA Discharge Targets
• Robust Process Utilizing Well Proven Technology Used at Over 100 Mines Globally
• Plant Can Be Easily Modified For Site Specific Requirements (Mo & Se Removal)
  
  
• Process: The heart of the treatment system is the chemistry utilized to treat contaminated water to meet regulatory compliance. pH is an indicator of what form metals in the contaminated water will take, that is, whether they are in solution (soluble) or are in solid particulate form (insoluble). pH of the contaminated water (feed to the plant) is typically acidic indicating soluble metals that must be treated to remove metals as solids.
  • In the plant, lime slurry is added to precipitate metals in optimum range for effective metals removal.
• M⁺⁺ + SO₄⁼ + Ca⁺⁺ + 2(OH)^- + H₂O → M(OH)₂ + CaSO₄•H₂O
  2M⁺⁺⁺ + 3(SO₄)⁼ + 3Ca⁺⁺+ 6(OH)^- + 6H₂O → 2M(OH)₃ + 3CaSO₄•H₂O
  Ca(OH)₂ + H₂SO₄ → CaSO₄•2H₂O
  
  
• The amount of lime added to maintain the pH in the optimum range and effectively remove heavy metals is regulated by pH controller and site specific based on water chemistry. Excess addition of lime is wasteful with no benefits to the treatment efficiency. But causes additional problems with settling and sludge management. On the other hand, insufficient lime will result in low treatment efficiency and out of compliance water quality. Flocculant is added to the treated prior to discharge into the Sludge Pond where the solution is clarified. The precipitated metals settle in the sludge pond and clear solution can be discharged to the environment.

• Water Chemistry: The mobile treatment plant has been meeting Environment Canada and EPA compliance limits at site in Canada (summarized in table below). However, the process can be easily modified based on site requirements.

  • 	Feed (mg/L)	Discharge (mg/L)
    Arsenic	0.0416	0.00028
    Cadmium	0.441	0.000052
    Cobalt	8.49	0.00038
    Copper	1.11	0.0061
    Iron	760	0.008
    Lead	0.0057	<0.0002
    Manganese	170	0.0175
    Nickel	24.9	0.002
    Zinc	54.2	<0.005
    Sulphate	8350	2210

• Mounted to a 53ft Renn Flat Deck Tri-Axle Trailer
    
• Overall Dimensions: 
  • Length: 56ft
  • Width: 104in
  • Height: 161in
  • Weight: 12,000 kg (Estimate)
    
    
• Location: Savona, British Columbia, Canada

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