Which water treatment method follows coagulation and sedimentation?

The correct answer is filtration. This step comes after coagulation and sedimentation in the water treatment process. During coagulation, chemicals are added to the water to help small particulates clump together into larger particles known as flocs. These flocs then settle out of the water during the sedimentation phase.

Once sedimentation has occurred, the next step is filtration, where the remaining water is passed through filters that remove any remaining suspended particles, including flocs and other impurities. This step is crucial for ensuring that the water is clear and free of visible contaminants before it undergoes any further treatment, such as disinfection.

While disinfection, chlorination, and flocculation are all important processes in the overall treatment of water, they do not directly follow sedimentation. Disinfection methods may utilize chlorine or other agents to eliminate pathogens, and flocculation is actually part of the coagulation process, where flocs are formed and encouraged to aggregate before sedimentation. Thus, filtration is the appropriate method that directly follows coagulation and sedimentation in water treatment practices.