Landfill gas

In landfills, methane is typically generated over many years from the gradual degradation of different forms or organic waste. In the absence of specific action, this leaks to the atmosphere as ‘landfill gas’, usually consisting of circa 50% methane. The methane contributes to the greenhouse effect, and causes health and safety hazards such as odour and risk of explosion.

Capturing this landfill gas can thus improve the environment within the immediate area of the landfill as well as reducing emissions of greenhouse gases, which is an important objective within the EU 20/20/20 targets.

Installation issues

Installations that capture the methane generated in landfills and either flare it or convert it to electrical energy are commonplace in many countries today. However while the concept is simple, it is more difficult to make it work properly and reliably in practice. Typical problems involve water build-up in the system, and poor performance of individual wells, resulting in low production of methane.

EU and local regulations

Furthermore EU and local regulations landfills are posing every increasing demands on landfill owners, related for example to the sorting of municipal waste, stepwise requirements to reduce (and finally to stop) organic material sent to landfill, and increasingly strict rules regarding the disposal of leachate water from landfills.

Vireo Energy and landfill gas projects

Vireo Energy is able to provide the full set of services to build, own and operate a landfill gas or biogas installation, including seeking approvals, managing construction and ongoing operations, and can fully finance such investments.

Vireo Energy has created an integrated three part offering that we believe is unique in helping landfill owners address these issues:

1. The best international landfill gas technology
This includes automatic well regulation and a proprietary gathering system design and allows us to maximize the recovery of gas from a landfill. It eliminates odour problems and gives maximum energy production.

2. Using heat generated from landfill gas
This solves the leachate water problem converting it to pure water and a small volume of solid residue that can be easily disposed of.

3. A simple and low cost anaerobic digestion process for municipal organic waste
The organic waste is converted to biogas and an inert matter that can be easily disposed of. Biogas produced can be combined with landfill gas to provide a larger combined heat and power project that produces electricity for sale and heat to both drive the leachate water, and anaerobic digestion process. We believe that such integrated projects represent the future for managing municipal waste in our core markets.

 

Visualisation of landfill gas project

Visualistaion landfill gas project

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