IWWG International Waste Working Group
APPLICATION OF WASHING AND ELECTROKINETIC TREATMENTS TO A HEAVY METAL CONTAMINATED SEASEDIMENT
Giorgia de Gioannis, Aldo Muntoni, Martina Piredda
Dredging of several hundred million cubic meters of sediments each year from harbors and waterways is mandatory in order to maintain the efficiency of the navigation system. Presently, the most common approach to management of dredged sediments is generally limited to dumping into confined disposal facilities (CDFs), but this solution could create potential concerns such as contaminant exposure and slow dewatering/consolidation (Reddy et al., 2006); in addition, disposal is space-consuming and proper sites can be difficult to find (Nystroem et al., 2006). Conversely, dredged sediments could be used in a valuable way, such as for habitat restoration and creation, beach nourishment, industrial and commercial development, enlargement of harbors and other coastal structures.