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Key facts
HDPE black membrane for base and gas cover (1.0–1.5 mm). Black absorbs heat to raise fermentation temperature; full weld gas-tightness testing and pressure-relief safety fittings are mandatory.
Configuration must be confirmed by project design documentsMaterial Configuration by Layer
| Layer | Recommended material | Function / rationale |
|---|---|---|
| Base liner | Black smooth HDPE 1.0–1.5 mm | Containment |
| Gas cover | Black HDPE 1.0–1.5 mm | Seals biogas, absorbs heat |
| Anchorage | Anchor trench + ballast | Resists uplift |
| Safety | Relief valve, gauge, flare pipe, seal well | Operational safety |
| 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
Is gas-tightness tested?
Yes. All welds are air-pressure tested and the completed digester undergoes a whole-system gas-tightness (inflate-and-hold) test before commissioning.
Project enquiry | Covered Biogas Digester (Black Membrane)
Send the project type, site conditions, design requirements and quantities to receive a project-specific configuration and quotation.