Sand media typically refers to carefully graded, sharp-edged granular particles (usually silica sand) used as a core component in physical water filtration systems. It acts as a powerful mechanical barrier that traps physical impurities, suspended solids, and organic material as dirty water passes through it. [1, 2, 3]
How Sand Media Filtration Works
Influent entry: Pressurized, untreated water is pumped into the top of a filtration tank containing a sand bed. [1]
Mechanical trapping: As water flows down through the gaps, the sharp, jagged edges of the specialized sand grains interlock to catch debris. [1]
Deep-bed filtration: Unlike a screen that only traps dirt on its surface, sand media utilizes a three-dimensional bed to store large amounts of contaminants throughout its entire depth.