Coal Ash Disposal
Disadvantages of Traditional Methods
Traditional methods for the disposal of coal fly ash and bottom ash, such as trucking, conveying, or wet slurrying at low concentrations, have numerous operational and cost disadvantages associated with them. Non-pipeline solutions are unreliable, noisy, and inefficient, as well as producing environmental hazards due to dust and groundwater seepage.
HCSD is the Economical Answer
PSI specializes in the design and construction of High Concentrated Slurry Disposal systems (HCSD) for the disposal of ash tailings for the power industry. This innovative technology provides a more economical solution due to the reduced overall volume of concentrated slurry and the ability to employ central ramp or side hill discharges, which avoid the need to raise perimeter dams, thus extending the life of disposal sites.
Compelling Ecological Advantages
The use of HCSD for coal ash disposal also significantly reduces water usage and run off. Thickened ash is not subject to run-out and seepage into groundwater is virtually eliminated. The ground can then be easily covered for restoration of the natural environment, thus emphasizing environmental responsibility, a core value at PSI.
- Key Services
- Feasibility Studies
- Hydraulic Design
- Basic/Detailed Engineering
- Laboratory and Loop Testing of Ash Samples
- Solids/Liquid Separation Evaluation
- Disposal Site Planning and Layout
- Construction Management
- Start Up and Commissioning
- Operator Training/Operations Support
- Types of Projects
- Fly Ash Disposal
- Bottom Ash Disposal
- Central Ramp Discharges
- Side Hill Discharges
