Tertiary Wastewater Treatment, Upflow Sand Filter
Available from Global Treat, Inc.
Upflow Sand Filter
The Upflow Sand Filter, used for granular filtration, provides the optimal means for the removal of colloidal and suspended solids. This filter provides a continuous supply of filtered water without the interference to backwash cleaning cycles.
Input water is introduced at the bottom of a cylindrical or rectangular tank filled with high quality sand (“media”). When the water enters it is pushed upward through the dense media. Media captures lingering solid matter. After traveling through the media bed, filtrate exits the Upflow Sand Filter near the top and flows over a fixed weir plate at a constant level.
With the unique upflow design, the majority of the solids remain in the lower portion of the filter bed. The continuously cleaning washbox uses filtered water to wash the media before it returns to the top of the filter bed. The Upflow Sand Filters are available in either circular package models or rectangular and concrete models. Upflow Sand Filters can be designed to treat applications ranging from 10 gpm to 1,000 gpm.