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The recording of a variety of waste of low or medium level activity generated in four European countries, led to the selection of ion exchange resins to be used for the assessment of feasibility and advantages of a new concept of incinerator. This concept, which consists of scrubbing the combustion gases, in order to trap radioelements, then in decontaminating this liquid phase, should lead to a satisfactory efficiency for the recovery of radioelements, suppress corrosion and fouling problems generally encountered in conventional facilities.
Incineration tests carried out at different operating pressures (1 to 25 bar) on a mini pilot unit rated at 0.1 kg/h showed:
destruction efficiency of waste (>99.9%);
a high recovery efficiency for sulphur oxides and radioelements in the scrubbing water;
low content in gas pollutants (CO, NOx, SOx) at the outlet of the process loop;
that the choice of a high operating pressure allows one to make the process more compact and has no effect on operating characteristics.
Various decontamination tests carried out on the scrubbing water obtained during the incineration tests made it possible to identify four possible types of treatment, which yield high decontamination factors (30 to more than 1000).
On the basis of the results obtained in these tests, the flowsheet for a 10 kg/h pilot plant, has been drawn up. It shows that a waste reduction factor close to 12 is feasible. sible.

Additional information

Authors: LÉONARD C, Bertin, Tarnos (FR);CHAPUS A ET AL, CEA, CEN Cadarache, Saint-Paul-lez-Durance (FR);ALAMO S, INITEC, Madrid (ES)
Bibliographic Reference: EUR 16883 FR (1996)
Availability: Available from the (2)
ISBN: ISBN 92-827-6897-X
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