Sewage Treatment Plants (STPs) use a variety of chemicals to effectively treat wastewater and ensure it meets environmental standards. Common chemicals used include coagulants like alum, which help remove suspended solids, and flocculants, which assist in the aggregation of particles. pH adjusters, such as lime or sodium hydroxide, are used to balance acidity or alkalinity. Disinfecta... https://www.watertreatmentplants.in/what-chemicals-does-sewage-treatment-plant-use/