6. Performance monitoring and maintenance
Performance monitoring must cover both the hydraulic and chemical aspects of the system, in order to verify :
that the system correctly drains groundwater to the reactive zones;
that head losses remain within an acceptable range, with no risk of groundwater bypass outside the reactive zones;
that the regulatory targets for groundwater treatment have been met;
the filter's efficiency in terms of chemical removal and its saturation rate, with a view to planning a possible change of material.
Hydraulic monitoring is carried out by monitoring the piezometric level on site, via a network of piezometers placed upstream and downstream of the barrier, as well as at each of its ends. On some systems, percolation...
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Performance monitoring and maintenance
Eventual dismantling
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References
- (1) - TOUZÉ (S.), CHARTIER (R.), GABORIAU (H.) - État de l'art sur les barrières perméables réactives (BPR). Réalisations, expériences, critères décisionnels et perspectives. - RECORD/BRGM, 167 p. http://www.record-net.org/record/download.php ...
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