Viridian Colombia offers ACTIVE leachate extraction technology, providing long-term, reliable, maintainable and cost effective management of leachate.
Leachate extraction is controlled by the landfill operator, not by gravity.
- Hydrostatic pressure on the landfill containment system is reduced thereby mitigating the potential for groundwater pollution.
- The extraction system is fully accessible for regular maintenance thereby ensuring long-term effectiveness.
- ACTIVE leachate extraction can be targeted at areas of waste known to be saturated.
- Viridian technology allows optimisation of gas extraction: Integration of ACTIVE leachate and gas extraction guarantees lower gas pressures inside the landfill and thus safe, controlled operation.
- Leachate extraction technology is simple to integrate with ACTIVE gas control systems.
- In some cases, allows more intensive and cost-effective use of the available land by effectively increasing capacity of the landfill.
Active leachate and gas management systems can also alleviate common issues encountered in Colombian Operational Landfills or Dumps:
- Uncontrolled leachate out-breaks.
- Gravity Drainage collapse (Partial or total).
- High gas pressures under saturated waste causing instability of slopes.
- Allows better use of the available land.
- Long-term extraction, even after closure it is reliable: Stable landfill.
Regulated leachate quantity and quality.
- Extraction / Recirculation is fully integrated.
- Hydrostatic head and pore pressure can be monitored and controlled.
- Can be installed in gas wells.
- Allows more effective extraction of the landfill gas: Landfill is more stable.
- Requires energy.
- Requires maintenance.
- It is a “must-have” on Large Gas Utilization Projects, including CDM.
- The leachate drainage system collapses or becomes clogged with bacterial growth.
- Eventually it will be necessary to adopt an active extraction system.
- Requires the construction of wells to allow extraction of landfill gas. However, the presence of high levels of leachate reduces the effectiveness of the gas extraction ñ gas wells become flooded.
- Maintenance is required.
- It is not compatible with large scale gas utilization projects.
Viridian provides full service and support to Leachate Extraction Systems. Our maintenance package consists of:
- General Maintenance
- System Inspection
- Emergency Call Out service
- Pump servicing & Maintenance