Abstract
The Rotary Press Filter is a sludge dewatering device equipped with metallic filter elements. It is attracting much attention in industry and is used for sludge dewatering in various applications such as sewage treatment plants, food processing factories, chemical plants, and paper mills. The metallic filter element is the key component of the Rotary Press Filter. The author has conducted filtration performance tests to compare the performance of two filter elements of different filter pore sizes (0.38 mm and 0.18 mm) using digested sludge at a sewage treatment plant. The results showed that the cake moisture content and SS recovery rate of the 0.38-mm filter were lower than those of the 0.18-mm filter, which is thought to be due to the lower filtration resistance of the 0.38-mm filter.
