Physical-chemical and biological methods of wastewater treatment

Wastewater treatment involves various methods to remove contaminants and pollutants before releasing water back into the environment. These methods can be categorized into physical, chemical, and biological treatments. Physical methods like screening and sedimentation involve physically separating solid particles from wastewater. Chemical methods such as coagulation and disinfection use chemicals to remove dissolved substances and kill harmful microorganisms.

Biological methods employ microorganisms to break down organic matter in wastewater through processes like aerobic and anaerobic digestion. Each method plays a crucial role in treating wastewater effectively, ensuring that the water discharged meets environmental standards and is safe for reuse or disposal. By employing a combination of these methods, wastewater treatment plants can efficiently clean wastewater and protect public health and the environment.