Which best describes the role of a sedimentation basin in a water treatment system?

The sedimentation basin plays a crucial role in a water treatment system by allowing particles to settle out of the water. This process is essential in the treatment of raw water, as it helps to remove larger solids and suspended materials that can interfere with water quality. When water flows into the sedimentation basin, the decrease in velocity allows gravity to act on the suspended particles, causing them to settle at the bottom. This process enhances the clarity of the water and reduces the load on subsequent filtration and disinfection processes.

Understanding the function of sedimentation basins is important in water treatment as they aid in improving the efficiency of the overall treatment process. This is especially relevant for removing particles that may include sediments, organic matter, and other contaminants, thus playing an integral part in providing safe drinking water.