What are the function of water treatment plant and label part and here function

The main functions of a water treatment plant involve several stages, each with a specific purpose to purify water:

1. Screening: This is the first step where large debris like leaves, sticks, and trash are removed from the raw water using screens.
2. Coagulation and Flocculation: Chemicals (like alum) are added to the water to neutralize the charges of suspended particles, causing them to stick together. This process is called coagulation. The water is then gently mixed to encourage these small particles to clump into larger, heavier particles called floc (flocculation).
3. Sedimentation: The water flows into large tanks where the heavy floc settles to the bottom due to gravity. This removes a significant amount of suspended solids.
4. Filtration: The water then passes through filters made of sand, gravel, and charcoal. These layers remove smaller suspended particles, dissolved impurities, and some microorganisms that did not settle during sedimentation.
5. Disinfection: A disinfectant, usually chlorine or UV light, is added to the filtered water to kill any remaining bacteria, viruses, and other harmful microorganisms.
6. Storage and Distribution: The treated and disinfected water is stored in clean reservoirs or tanks and then pumped through a network of pipes to homes and businesses.