What is the function of filtration in the water treatment process?

In the context of water treatment, filtration serves a crucial role in improving water quality by separating unwanted materials from the water. The primary function of filtration is to remove small insoluble particles, which can include sand, silt, and other particulates that might not be effectively eliminated through other methods.

During the filtration process, water is passed through a medium such as sand or activated carbon, which captures these tiny particles. This process not only helps in clearing the water but also plays a significant role in protecting downstream equipment and ensuring that the water is safe for consumption. The removal of these small particles is essential, as they can harbor pathogens and contribute to turbidity in the water, leading to potential health risks.

While odors and large solids may also be dealt with during water treatment, filtration specifically targets those small, suspended particles that can affect the clarity and overall quality of the water. Adding minerals is a separate stage in certain water treatment processes aimed at enhancing the taste or re-mineralizing the water after it has been treated. Thus, the choice related to the removal of small insoluble particles accurately reflects the primary function of filtration in the water treatment process.