Merit Filter Corporation is the leading authority on polyurethane sludge dewatering media, static screens and sludge thickening devices. We have been designing and selling these type systems for over 20 years. We manufacture the Merit Filter Media Sludge Dewatering System, Merit Static Screens and the Merit Sludge Thickening Device. Merit Filter Media utilizes 6 to 10 times less area than conventional sand drying beds and takes days to dewater sludge, versus weeks and months.