What chemical species are targeted for removal in wastewater treatment systems to comply with water quality regulations related to thermal power plants?

Wastewater treatment systems in thermal power plants target several chemical species for removal to comply with water quality regulations. These include suspended solids, heavy metals, oil and grease, and chemicals used in water treatment processes. Suspended solids can increase turbidity and harm aquatic life. Heavy metals such as mercury, lead, and cadmium are toxic and can accumulate in the environment. Oil and grease can form surface films and deplete oxygen levels in receiving waters. Chemicals used in water treatment, such as chlorine, ammonia, and corrosion inhibitors, must be removed or neutralized before discharge to prevent harm to aquatic ecosystems. pH is also a key parameter; wastewater must be neutralized to comply with regulated pH ranges, preventing acidic or alkaline discharges that can damage aquatic life. Regulations often set limits on the concentration of these pollutants in wastewater discharges to protect water quality.