The capacity of the upflow filter system ranges from 60 to 1,000 gpm. Multiple units can be coupled to accommodate any larger flow requirements. By forcing the collected solids deep into the media, the upflow media filter achieves greater operational cycle time. Filter media types can vary or even be combined for maximum efficiency in a given application. Options include silica sand, garnet and anthracite coal. Available in vertical open top or pressure vessels, this upflow filtration system is designed for effective removal of solids, colloidal silica and color from river water to protect an ion exchange or membrane system. It is also used for removal of hardness precipitation in brine service.