A Multimedia Depth Filter consists of a properly sized pressure vessel (tank) with the inner surfaces lined to prevent corrosion, multiple layers of properly sized and selected media, and a mechanical or digital time clock controller to sequence and control a backwash program. The controller has a lockout feature to prevent backwashing while the Reverse Osmosis Machine is operating. This device is highly effective in removing suspended particulate matter from water that has a high silt density index (SDI). As water flows downward through the bed, it encounters layers of media with decreasing porosity, so that successively smaller particles are trapped in each layer.<\/p>\n","protected":false},"excerpt":{"rendered":"