Landfill Leachate Management Solutions

Overview

How to handle leachate in landfills

Most leachate system failures are not immediate. They develop over time due to clogging of drainage media, differential settlement of the waste mass, increasing waste loads, and changes in leachate chemistry as decomposition progresses. These long-term mechanisms can compromise drainage efficiency, alter flow paths, and increase hydraulic head on the liner.

Modern landfills amplify these challenges. Deeper cells, higher moisture waste streams, vertical expansion, and phased development place sustained hydraulic and structural demands on leachate systems. Leachate management is therefore not just a hydraulic function at commissioning but a long-term performance and compliance challenge that must be addressed over the full design life of the facility.

StrataDrain™is used within landfill drainage systems to help preserve drainage continuity, maintain flow paths, and support consistent leachate collection performance over the full design life of the facility.

Why leachate management needs to be robust

When leachate and gas can’t move through the landfill the way the system was designed to allow, problems start to compound. Leachate begins to pond instead of draining. Gas pressure builds beneath low-permeability layers. Flow is forced along unintended paths. Over time, liners and interfaces are subjected to stresses they were never meant to carry continuously, increasing the likelihood of leakage and making detection less reliable.

Strata’s combined products address risk by keeping both liquid and gas pathways open and functional as conditions change. StrataDrain™ keeps drainage flowing so leachate can reach collection points instead of accumulating on the liner. Strata geogrids and geocells stabilize the surrounding ground, limiting deformation that disrupts drainage layers, distorts gas pathways, or isolates detection systems as settlement progresses.

How Strata’s products help leachate management

Primary leachate collection systems above liner systems

StrataDrain™ is installed above the liner to provide a clear, continuous path for leachate to reach pipes and sumps. Where loading increases or subgrades are weak, Strata geogrids or geocells are used below the drainage layer to stabilize the foundation. This helps drainage grades hold over time, even as settlement develops.

Secondary leachate detection and removal layers

In secondary systems, drainage performance depends on the layer staying intact as the landfill moves. StrataDrain™ maintains flow beneath the primary liner, while geogrid reinforcement limits deformation in the supporting soils so detection and removal layers continue to function as intended.

Leachate drainage on side slopes and sump areas

On slopes and around sumps, drainage and stability are closely linked. Strata geogrids reinforce these transitions to control movement, while StrataDrain™ maintains drainage continuity where leachate flow is concentrated, and disruption would quickly affect collection efficiency.

High-moisture or organic waste landfills

Higher leachate generation places sustained demand on both drainage and support layers. StrataDrain™ handles the hydraulic side, while Strata geocells are used where added confinement is needed to manage deformation and protect long-term drainage performance.

Upgrades to existing or underperforming leachate systems

In older cells where settlement or instability has reduced collection efficiency, Strata reinforcement is used to re-establish support and restore grades. StrataDrain™ is then incorporated to reconnect drainage paths, extending system performance without full reconstruction.

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