HY
Key facts
Alkaline leachate (pH often >9) requires alkali-resistant selection: HDPE liner with PP filtration, sub-liner groundwater drainage and monitoring wells, plus staged ash placement protection.
Configuration must be confirmed by project design documentsMaterial Configuration by Layer
| Layer | Recommended material | Function / rationale |
|---|---|---|
| Primary liner | HDPE smooth (base) / textured (slope) | Containment |
| Auxiliary | GCL or compacted clay | Redundancy |
| Filtration | PP geotextile | Alkali resistance |
| Drainage | Drainage geocomposite + wells | Uplift control and monitoring |
| Note: configurations are common practice; the final system and specifications must follow the project design documents and governing codes. | ||
Products Used in This System
Frequently Asked Questions
Why polypropylene filters?
Polyester hydrolyses and loses strength in strong alkali; polypropylene retains acid/alkali performance, which is essential for alkaline fly-ash leachate.
Project enquiry | Fly Ash Yard Lining
Send the project type, site conditions, design requirements and quantities to receive a project-specific configuration and quotation.