Anaerobic Digester and Biogas Containment Systems

Renewable natural gas projects capture biogas released as organic waste breaks down anaerobically. That process depends on large in-ground geosynthetic containment systems, including digester lagoons and cover systems that hold the waste stream and capture the gas it produces.

In-ground geosynthetic containments are well suited to biogas collection for several reasons:

• Can be built to nearly any capacity and shape
• Provide greater volume and surface-to-depth ratio than tanks
• Larger surface area speeds evaporation and drying stages
• Lower capital cost for large waste streams
• Relatively low maintenance

RNG Applications

• Manure and runoff lagoons
• Anaerobic digester lagoons
• Water and wastewater lagoons
• Solid waste storage and management systems
• Tank farm spill containment
• Cap and cover systems
• Floating covers