Alternatives to utilisation

University of Padua

IMAGE Department

 

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Waste management

 

Barriers

 

Biogas

 

 Leachate

 

 New waste management strategies

 Landfill design 

 

Alternatives to utilisation: Flares

v   Removal of smell, toxic compounds, CH₄, ozone depleting compounds

 

v   Maintenance is needed

 

v   Incomplete combustion ® 
new toxic compounds

 

Alternatives to utilisation: Top cover

v     Optimisation of  microbial processes in top cover providing methane oxidation

 

                                                       CH₄ + 2O₂ ® CO₂ + 2H₂O

 

 

LFG Remediation

• Old landfills without liners (bottom, sides)

•   Migration of LFG

•   Risk assessment?

•   Passive or active systems?

•   Monitoring (gas alarms)

 

Landfills supplied with tight top cover to remediate for groundwater pollution may constitute a high risk for LFG migration: the gas can no longer escape through the top.

LFG flare in Inzago (MI), Italy

Extraction system in Inzago (MI), Italy

Extraction station in Inzago (MI), Italy

Gas generation

Gas quantities

LFG utilisation

Alternatives to utilisation

Design of Biofilters for Methane Oxidation