What is the primary objective of filtration in water treatment?

The primary objective of filtration in water treatment is to remove remaining solids and microorganisms from the water after sedimentation. Filtration is a critical step in the treatment process, designed to ensure that any tiny particles, including bacteria, viruses, and sediment that may have not settled out during the sedimentation stage, are effectively eliminated.

This process enhances water quality by providing a barrier that allows clean water to pass through while trapping contaminants. It is particularly important for meeting health standards and ensuring safe drinking water, as many pathogens are typically removed during filtration. The different types of filters, such as sand filters, membrane filters, and others, each serve this primary purpose of enhancing the safety and clarity of the treated water.

Other options, while involving aspects of water treatment, do not accurately represent the main goal of filtration. For instance, removing large debris is more closely associated with pre-treatment processes that occur before filtration. Reducing water temperature and adding chemical disinfectants are separate processes that aim to improve water quality but do not specifically relate to the filtration process.