Sewage treatment is a critical process in modern sanitation and environmental management. It involves the removal of contaminants from wastewater, making it safe for discharge into the environment or for reuse. One of the most vital components of sewage treatment is bacteria. These microorganisms play an essential role in breaking down organic matter, purifying water, and maintaining ecological balance. This article explores the importance of bacteria in sewage treatment, detailing their functions, benefits, and the processes involved.

Biological sewage treatment plants are essential facilities designed to treat wastewater through biological processes. These plants play a crucial role in maintaining environmental health by removing contaminants from sewage before it is released back into the environment. This article will explore the various aspects of biological sewage treatment plants, including their functions, processes, benefits, and challenges.