Sewage Treatment Plants (STPs) use a variety of chemicals to ensure effective treatment of wastewater. These chemicals help in breaking down pollutants, removing contaminants, and disinfecting the treated water. Common chemicals used include coagulants like alum, flocculants to aid in particle aggregation, disinfectants such as chlorine or ozone, and pH adjusters like lime. Netsol Wat... https://www.watertreatmentplants.in/what-chemicals-does-sewage-treatment-plant-use/