In sedimentation basins, what is the primary purpose of using baffles?

The primary purpose of using baffles in sedimentation basins is to prevent short-circuiting. Short-circuiting occurs when water flows too quickly through a treatment system, allowing insufficient time for sedimentation to take place. Baffles are strategically placed barriers within the basin that create a more uniform flow path. This design reduces the chances of water bypassing areas of the basin, ensuring that sedimentation occurs more effectively as particles have adequate time to settle before the water exits the basin. Properly designed baffles lead to a more efficient treatment process by maximizing the retention time of water in the basin, ultimately improving the removal of suspended solids.

The other options touch upon different aspects of water treatment processes but do not specifically address the main function of baffles in sedimentation basins. For example, enhancing chemical reactions, reducing turbulence, and increasing flow rates relate to other design elements or operational objectives in treatment systems, rather than the particular role of baffles in minimizing short-circuiting.