15 Jan 2018
GEA developed a hybrid ZLD process for a molybdenum production facility. The wastewater contains various sulfates and sodium chloride. With a wastewater capacity of up to 110 cubic meters per hour, the process consists of a brine purification pretreatment section. That is followed by a reverse osmosis pre-concentration unit and subsequent concentration in a falling film evaporator driven by mechanical vapor recompression. Crystallization and solid separation completes the process, which produces pure water for reuse in the production.
Running successfully and showing excellent results, critical compound concentrations (fouling and incrustation forming components such as colloidal SiO2, Mn and Fe) have been reduced to below critical limits.
Water use and conservation is a key consideration for the global processing industries, particularly those affected by the scarcity of available water sources or suitable wastewater recipients.
We can supply complete ZLD lines comprising the key elements of centrifugal separation, membrane filtration, evaporation, crystallization and drying technologies, offering the following benefits: