A comparative study of sludge dewatering units for sludge management.

A comparative study of three different types of municipal sludge dewatering unit was performed including sludge dewatering, centrifuge, and sand drying bed. The purpose of that was to examine the capability of each dewatering unit for dewatering municipal sludge at the Jahra treatment plant. The testing program was performed to select the most feasible and effective unit under local conditions. From the experiment approach, it was clear that the application results of various dewatering units were different and depends entirely on the basic properties of each unit. It has been also found that mechanical dewatering units can operate and are the most feasible and effective to reduce the large quantities of sludge as a treatment byproduct.