polyester filter belt 1.easily peer off. longlife working time 2.especially designed for sludge dewatering 3.good quality polyester filter belt:1.Features and Usespolyester filter belt mainly is used for sludge dehydration in sewage treatment factories. They have the characteristics of good water permeability, air permeability and non-revealed sludge, acid-resisting, alkali-resisting, heat ...