What is rapid filtration primarily used for?

Rapid filtration is primarily utilized for the filtration of treated water through a granular media bed. This process typically follows initial treatment steps, such as coagulation and sedimentation, allowing for the removal of remaining particulates, including suspended solids and some microorganisms. The use of granular media, such as sand or anthracite, enables water to flow through quickly while effectively capturing smaller particles.

This method is characterized by its speed, making it suitable for large-scale water treatment plants where high flow rates are essential. The filtration process enables operators to achieve clear and potable water efficiently, reflecting why this option is the most accurate choice regarding the primary use of rapid filtration.