FGD Wastewater

Coal-fired power plants produce sulfur dioxide (SO2) air pollution, which can be reduced by flue gas desulfurization (FGD) systems. FGD wastewater has a lot of calcium sulfate, as well as metals and chlorides. Cybertig can improve FGD water cycles by removing chlorides selectively, or eliminate FGD wastewater completely.

Sulfur dioxide (SO2) is a harmful gas that contributes to acid rain and respiratory problems. Coal-fired power plants are major sources of SO2 emissions, as coal contains sulfur impurities that are released when burned. To reduce SO2 pollution, power plants use flue gas desulfurization (FGD) systems, which spray a chemical solution into the exhaust gas to capture and remove the SO2 molecules. However, this process also generates a large amount of wastewater, which contains high levels of calcium sulfate (gypsum), metals (such as mercury, arsenic, and selenium), and chlorides (salt).

FGD wastewater poses a challenge for power plants, as it cannot be discharged directly to the environment without proper treatment. The wastewater can damage aquatic ecosystems, contaminate drinking water sources, and corrode pipes and equipment. Moreover, the wastewater is often saturated with gypsum, which makes it difficult to treat with conventional methods. Therefore, power plants need to find effective and economical ways to manage their FGD wastewater.