Florida Drinking Water Operator "B" Practice Test

What does the sedimentation process primarily aim to remove from water?

1. Microorganisms

2. Solids and Suspended Particles

3. Chlorine Residuals

4. Bacterial Contaminants

The correct answer is: Solids and Suspended Particles

The sedimentation process is a critical step in water treatment that aims to remove solids and suspended particles from water. During sedimentation, water is allowed to stand in a sedimentation basin or tank, where the denser particles settle to the bottom due to gravity. This process is effective at removing larger particulates, such as silt, sand, and other sediments, which can cloud the water and affect its clarity. The significance of this process lies in its ability to reduce the concentration of solid contaminants, which not only improves the aesthetic qualities of the water but also enhances the efficiency of subsequent treatment processes, such as filtration. By pre-treating the water to remove solids, sedimentation ensures that filters work more effectively and that the overall treatment plant operates smoothly. Other options, such as microorganisms, chlorine residuals, and bacterial contaminants, are typically managed through different treatment methods, like disinfection or filtration, rather than sedimentation. Understanding the primary function of sedimentation is essential for those involved in water treatment operations, as it lays the groundwork for ensuring safe and clean drinking water.