In water treatment, what does the process of backwashing do?

Backwashing is a crucial process in water treatment, particularly for filtration systems. It involves reversing the flow of water through a filter media, effectively dislodging and flushing out accumulated particulates that have collected within the filter. As water is directed backwards, the impurities trapped in the filter medium—such as sediments, dirt, and other contaminants—are expelled, allowing for a cleaner filter and maintaining the system's efficiency.

This process is essential for preserving the functionality of the filtration system, ensuring that water can flow freely and without obstruction. Regular backwashing leads to improved water quality and consistent performance of the treatment system, which is vital for meeting regulatory standards and ensuring safe drinking water. Other options, while related to water treatment, do not capture the primary purpose of backwashing as effectively as this one.