Landfill leachate carries heavy metals, organic acids and ammonia nitrogen. Any leakage contaminates groundwater and soil with extreme remediation cost. Failure points: under-thick membrane punctured by waste load, slope liner slippage, weak welds forming leak paths, and poor leachate drainage raising the head.
Landfill Anti-seepage: Per GB 55012-2021 (4.3.2), HDPE geomembrane in landfill liner systems shall not be thinner than 1.5mm. Base uses 1.5-2.0mm smooth HDPE; slopes use equal-thickness single/double textured membrane (double for ≥1:1.5); 400-600 g/m² geotextile cushions below and above; composite drainage net conducts leachate; high-grade cells add GCL for a double composite liner with leak detection. A full leak-detection survey must pass before waste placement.
Landfill leachate carries heavy metals, organic acids and ammonia nitrogen. Any leakage contaminates groundwater and soil with extreme remediation cost. Failure points: under-thick membrane punctured by waste load, slope liner slippage, weak welds forming leak paths, and poor leachate drainage raising the head.
| Location | Recommended material | Reason |
|---|---|---|
| Base liner | 1.5-2.0mm smooth HDPE | GB 55012-2021 minimum 1.5mm; ≥5m width cuts seams |
| Slope liner | 1.5-2.0mm textured HDPE | Single texture 1:2.5-1:3; double ≥1:1.5 |
| Cushion | 400-600 g/m² filament geotextile or compacted clay | Point-load protection |
| Leachate drain | Composite drainage net 4-6mm core or gravel | Keeps head low |
| Composite liner | GCL-OF 5000 g/m² + HDPE | Double liner with detection layer |
| Closure cover | 1.0-1.5mm HDPE + drainage + soil + vegetation | Rainwater shedding |
2024County MSW landfill containment: 1.5mm smooth HDPE on base, 1.5mm double-textured on slopes, 400 g/m² filament geotextile cushions above and below, composite drainage net for leachate collection. Whole-system leak detection passed before operation.
View project details ›1.5mm per GB 55012-2021; 2.0mm for waste heights 20-50m; closure covers ≥1.0mm.
Interface friction prevents liner slippage; smooth stays on flat base to save cost.
A double composite liner with a leak-detection layer finds damage early — standard for high-grade and hazardous cells.
Dezhou Yurun Geosynthetics Co., Ltd. is a source manufacturer of geosynthetic anti-seepage materials, located in the geosynthetic industrial cluster of Lingcheng District, Dezhou City, Shandong Province, China. We supply HDPE geomembrane, pond liners, composite geomembrane, filament and staple geotextile, tunnel waterproof board, composite drainage net, sodium bentonite GCL, ecological bags and cement blanket to projects across China and overseas.
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Same number: 13105341718
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HDPE geomembrane · pond liner · composite geomembrane · geotextile · GCL · drainage net · geobag · cement blanket · tunnel board
GB/T standards · In stock · Custom sizes · Free technical support · Worldwide delivery
+86 13105341718 (Mr. Yang · WeChat / WhatsApp)
