Briefly explain the term Rapid Sand Filtration

Answer 1

Rapid sand filtration is a water treatment process used to remove suspended solids, bacteria, and some chemical contaminants from water. In this method, water is passed through layers of sand and gravel, which act as a physical barrier to trap and filter out impurities. The filtration process occurs relatively quickly, allowing for a higher flow rate compared to other filtration methods, such as slow sand filtration. Rapid sand filters require periodic backwashing to clean the sand bed and remove accumulated debris, ensuring continued effectiveness in water treatment. This technique is commonly used in municipal water supply systems to ensure safe and clean drinking water.