Wastewater Treatment

Wastewater treatment is the process of removing physical, chemical and biological contaminants from used water generated by households, industries and commercial activities before it is discharged back into the environment or reused. The treatment typically involves several stages, including preliminary screening to remove large debris, primary sedimentation to separate solids, secondary biological treatment to break down organic matter using microorganisms, and tertiary or advanced processes to remove nutrients, pathogens and remaining pollutants. Modern wastewater treatment plants may also recover resources such as biogas, nutrients and reclaimed water. Effective treatment protects public health, prevents water pollution, reduces greenhouse gas emissions and supports circular economy and water reuse strategies in urban and industrial systems.