 |
|
|||
|
|
|
|||
 |
|
Mercury removal from
contaminated mud coming from chlor-alkali plant
The paper considers the problem of decontamination of mud coming from a
chlor-alkali plant. The mud heavily polluted by mercury has been analysed in
order to ascertain the solid phases and the modalities of mercury
association. Taking into consideration the characteristics of mercury in
respect to the inert association of solid components of the mud, a
laboratory-scale thermal-based process has been developed. The volatile
products coming from thermal treatment have been captured in suitable traps
in order to avoid any diffusion of the metal into the atmosphere, thus
ensuring safe environmental conditions. Material balance ascertained before
and after the treatment process indicates success of the operation which
provides a silt and sand product containing mercury at a level lower than
that fixed for acceptance of the material for reuse in land restoration. |
|
