What does the term "adsorption" refer to in the context of filtration?

In the context of filtration, "adsorption" specifically refers to the accumulation of particles on a filter medium. This process involves the adhesion of molecules from a liquid or gas to a solid surface, which in this case, is the filter material. During filtration, as water passes through the filter, various contaminants and particulate matter are drawn towards the surface of the filter media, effectively attaching themselves to it. This enhances the filter's ability to trap and remove these impurities from the water, improving the overall quality of the effluent.

Understanding adsorption is crucial for water operators as it plays a significant role in the efficiency of various filtration systems, such as activated carbon filters, where the surface area of the carbon increases the adsorption of organic compounds and chemicals. The more effective the adsorption process, the better the filtration results, leading to cleaner and safer drinking water.