However the sludge agricultural valorization, which was
the oldest mode and the more used for the treatment and
valorization of sludge issued from wastewater treatment
plant, may no longer meet the health and environmental
requirements dictated by legislation (AMIR) [3]. The future of
this outlet was seriously called in question whereas the sludge
volume produced was brought to increase. This report implies
the search for other alternatives making it possible to pack the
range of the existing solutions.