What is the purpose of sedimentation in water treatment?

What is the purpose of sedimentation in water treatment?

• A. To enhance carbon filtration
• B. To allow heavier particles to settle at the bottom
• C. To aerate the water
• D. To mix chemicals evenly

Answer: (B)

Sedimentation plays a critical role in water treatment by allowing heavier particles to settle at the bottom of a sedimentation basin or tank. During this process, water flows slowly in an environment where the velocity is reduced, which gives suspended solids, such as sand, silt, and other particulates, the opportunity to separate from the water due to gravity. As these heavier particles accumulate, they form a layer of sludge at the bottom, leaving clearer water above that can be further treated. This step is essential because it reduces the turbidity of the water and prepares it for subsequent treatment processes, such as filtration and disinfection, ultimately improving the overall efficiency and effectiveness of the water treatment process.

Sedimentation plays a critical role in water treatment by allowing heavier particles to settle at the bottom of a sedimentation basin or tank. During this process, water flows slowly in an environment where the velocity is reduced, which gives suspended solids, such as sand, silt, and other particulates, the opportunity to separate from the water due to gravity. As these heavier particles accumulate, they form a layer of sludge at the bottom, leaving clearer water above that can be further treated. This step is essential because it reduces the turbidity of the water and prepares it for subsequent treatment processes, such as filtration and disinfection, ultimately improving the overall efficiency and effectiveness of the water treatment process.