What are two examples of water treatment processes?

The selection of filtration and sedimentation as examples of water treatment processes is correct because both methods are fundamental steps in the purification of water, particularly in municipal water treatment facilities.

Filtration involves passing water through various materials (like sand, gravel, or membranes) that capture and remove particles, bacteria, and sediments, thereby improving water clarity and quality. It’s a crucial process to ensure that any suspended solids and larger contaminants are effectively removed before further treatment steps.

Sedimentation, on the other hand, is the process where heavier particles settle out of the water due to gravity. Typically, this occurs in large tanks called sedimentation basins, where water is allowed to stand still for a period, enabling solid materials to drop to the bottom. This process significantly reduces the load of solids in the water, which can then be removed, resulting in cleaner water that can be treated further.

Both processes work together to enhance the efficiency of water treatment, making them vital stages in ensuring safe and clean drinking water before it undergoes additional treatments such as chlorination, which may also be mentioned in different contexts.

In summary, filtration and sedimentation are well-established and essential processes ensuring water cleanliness and safety in treatment facilities.