Creating Ash Ponds
Products for Fly Ash Disposal
Coal ash disposal is a concern at many combustion power plants and factories. An ash pond can be used to dispose of the coal residue called fly ash. This wet method of disposal requires a large pond to fill with coal ash slurry. The water will eventually be filtered or allowed to evaporate, leaving the fly ash in a contained environment to be disposed of or reused.
What Materials Do I Need to Create Ash Ponds?
Using a Geotextile Liner in your ash pond design will protect the soil from contamination. Beyond ash ponds, applications include the containment of hazardous or municipal wastes and their leachates. Our liners are available in various styles. For ash ponds at power plants, we often recommend liners with excellent seam, tensile, and tear strength, such as a 40 mil HDPE (High Density Polyethylene) liner.
GEI Works' project specialists also recommend implementing a Water Baffle System as part of the ash pond management plan. The baffles allow the flow of the coal ash slurry to be controlled and the entire pond area to be used. This results in better BOD and TSS levels and ensures power plants stay within their permit limits to avoid costly shutdowns.
One other suggested option for coal ash disposal are Dewatering & Filtration Products. Dewatering products are ideal for filtering materials and are used extensively on water treatment projects (WWTPs), power plants, aquaculture facilities, pulp and paper mills, and numerous industrial lagoons for the consolidation of media. The coal ash slurry is pumped into the dewatering bag. The filtered sludge stays in the bag for easy disposal, while clean water flows out. This technology is often incorporated into the ash pond design and is the most inexpensive, economical route to consider when treating coal ash slurry.
How Can Fly Ash Be Reused?
In the past, fly ash was simply released into the atmosphere, but now it can be recycled or disposed of in more environmentally conscious methods. Fly ash is most commonly recycled for use in the following applications:
- Cement and Grout
- Embankments and Structural Fill
- Waste Stabilization and Solidification
- Raw Feed for Cement Clinkers
- Mine Reclamation
- Stabilization of Soft Soils
- Road Subbase
- Flowable Fill
- Mineral Filler in Asphaltic Concrete
- Loose Application on Rivers to Melt Ice
- Loose Application on Roads and Parking Lots for Ice Control
Questions about ash ponds? Our project specialists would be happy to support you. Call 1-772-646-0597 to discuss your fly ash disposal solutions.