Tertiary sewage treatment is a crucial process in the wastewater management system, designed to further purify sewage after primary and secondary treatment stages. This advanced treatment stage aims to remove remaining contaminants, including nutrients, pathogens, and other pollutants, ensuring that the treated water is safe for discharge into the environment or for reuse in various applications. This article will explore the significance, processes, technologies, and benefits of tertiary sewage treatment, as well as address common questions related to this essential aspect of environmental management.