The Wedgewater™ filter system is made up of 12″ square by two inch high interlocking high-strength polyurethane media tiles. The media features a special non-clogging design, easy maintenance, and near perfect reliability. The Wedgewater™ system only requires a mere portion of the space used for sand drying beds. No special skills required to operate. Just fill the bed, wait a few days, then remove the dried sludge and clean the bed. The system functions by force of gravity without supervision, and the only energy costs are the minor requirements of the auxiliary pumping and polymer equipment.