Bottom ash treatment (Fig. 10) has a crucial role for combustion-based
WtE units: the value related to ‘‘Respiratory Inorganics’’ increases
or reduces by a factor of about 2 when the percentage of ashes sent
to treatment reduces to 25% or increases to 100%; those of ‘‘Non
Carcinogens’’ reduces to about zero (5.1 kg C2H3Cleq) when all
the bottom ashes are treated.