Membrane-Based Technology for Flue Gas Desulfurization (FGD)
FGD scrubber liquor has very high levels of chlorides (4,000 – 25,000 mg/L), trace concentrations of heavy metals (e.g., chromium, mercury, and selenium), high levels of nitrates (10-700 mg/L) and very high levels of total dissolved solids (15,000 to 60,000 mg/L).
Effluent is particularly contaminated with suspended solids, chlorides, and organics
Treatment of complex, high TDS wastewater will result in more processes and require more durable materials of construction.
Conventional processes, like coagulation/flocculation, softening and ultrafiltration are used as pre-treatment to the RO in order to achieve Zero Liquid Discharge.
Our AquaZoom™ ST+ or DTG modules can be used to desalinate the wastewater and cost effectively reduce the volume prior to evaporation. A typical FGD water treatment process is illustrated to the right.
AquaZoom RO Modules for Large Flows
As a large membrane area solution for high-volume applications, the ST+ and ST++ modules can be used to significantly reduce treatment plant footprint and overall CAPEX.