DenseSludge: Cost-Effective Treatment For Acid Mine/Rock Drainage

Operating mines and abandoned mine sites generate Acid Mine/Rock Drainage (AMD/ARD) that must be treated to prevent adverse impacts to rivers and streams. Veolia Water Technologies offers a proprietary process known as DenseSludge™ that reduces the cost of water treatment and sludge management in AMD/ARD treatment systems.

Benefits
• Reduces sludge volume in clarifier underflow by 90%
• Minimizes lime usage and associated cost
• Decreases sludge flow back to the mine pool, reducing re-treatment costs
• Removes manganese and iron at a lower pH than predicted by theoretical solubility curves
• Minimizes calcium sulfate (gypsum) and calcium carbonate (calcite) scaling
• Provides consistent pH control
• Lowers depth of sludge blanket in the clarifier, reducing torque