CAPDRAIN Drainage

Landfills

Formed by a lightweight triplanar HDPE geonet thermally bonded over one or both sides to nonwoven PP geotextiles. Geonets and geocomposites are used for a wide variety of applications covering new cells and closures Rainwater collection layer: Located over the containment liner in caps and closures, drainage geocomposites are used to avoid water pressure buildup in topsoils Biogas collection layer: Located under the containment liner in caps and closures, drainage geocomposites are the most realiable media through which the gases generated inside the waste mass can be collected and displaced towards ventilation shafts Leachate collection layer: Geocomposite drains offer the most reliable system to avoid the accumulation of leachate over the base liner while keeping its structure unsaturated Leak detection layer: Geonet and geocomposite drains are placed in between containment layers to create a void space through which leaking fluids can be detected and displaced outwards

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Contributions

• Improves the drainage capacity or completely replaces the natural drainage layer • Homogeneous drainage solution that follows strict quality control procedures • Simple and aesthetic design that harmonically complements other geosynthetic systems • Lightweight and flexible composition • Highly robust and resilient, able to withstand the loads applied during installation • Chemically inert and imperishable • Fast, easy and reliable installation, does not require heavy machinery or qualified staff • Outstanding transportation capacity • Easy to store and protected against external agents • Low carbon footprint

Features

• Extremely high transmissivity • Low core compressibility • Stable transmissivity over the long term in accordance with GRI GC13 Specification • Suitable for installation over steep slopes • Customizable geotextiles • Under ISO and ASTM Standards • Rolls up to 4-m wide and customizable length