Dredging is an essential activity to maintain maritime and river routes, coastal protection to flooding, among others. Every year, over 2 Bm3 of sediments are dredged around the world, 20-40% of which are highly polluted and must be treated before being disposed to landfill (as current treatment and separation technologies do not allow to cost-efficiently valorise the water and the solids from this dredged material).
Water Challenge has developed and patented the first energy-efficient truly Zero Liquid Discharge (ZLD+) technology able to separate 100% of dredged material into fresh water and crystalized solids in one step, without chemicals and with very low energy consumption (<20 kWh/m3).