Flottweg offers the C-XI decanter series, which provides improved thickening and dewatering performance to allow operators of sewage treatment plants to achieve a higher dry substance in the processed sludge. The optimized scroll pitch and improved geometry of the scroll body lead to a greater concentration of solids, according to the company. The flow-optimized scroll body improves the guidance of the centrate away, leading to greater purity of the liquid phase. Back-contamination in the sewage treatment process is reduced. The maximum G force is increased by up to 15% in comparison with the conventional C series.