Thermography in Landfill
Thermographic technology is constantly expanding, and its use has reached the most varied sectors: construction, mechanical, electronics, process controls.
In all these cases, thermography allows to improve the safety and quality of the processes and consequently optimize the results
In the application that is illustrated below thermography want to help quickly identify thermal anomalies in landfill and therefore be an additional instrument to the research techniques already in use
Normally landfill main events to consider are:
- Beddings
- The diffusion of biogas
- The dispersion of the leachate.
The first point can be treated through techniques:
- Photogrammetry to detect deterioration or degradation of the surface or to determine if the beddings produce water stagnation.
- Digital terrain modeling to derive the volumes of abbancamento landfill and calculate, by analyzing multi-temporal volumes abbancati in a given period.
As for the other two points, the use of thermal imaging, allows to control two of the fundamental aspects of the operational management of the landfill.
Dissemination of biogas
Knowing that, during it’s climb biogas carries with it part of the heat produced by the reactions of decomposition, thermal imaging can be a valuable tool to identify the variations in temperature that would occur at the surface at the points where the biogas find a way out. The medium normally is made from homogeneous material and this implies that also the temperature can be considered homogeneous and uniform. If the material is uneven, that is if there are ongoing production of heat or there are external factors that affect the temperature, you will have in the thermograms of thermal anomalies
Dispersing leachate
The production of the percolate and therefore its collection and disposal boot, represents one of the activities of greater commitment to the clear valence which would have a dispersion in water with pollution of the same thermography can be applied also in this field, since it can Locate any runoff and ponding (if still infiltrates) with certainty and speed.
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In conclusion, for the above:
– Ease of operation (performed by certified technician UNI EN 473)
– The speed of the processing result
– Reliability
They make thermography technique of monitoring and control of “first approach” that can be integrated into the regular activities of management of the landfill.