EE&T has extensive experience with evaluating and designing reliable pumping systems for WTP residuals. These residuals are thixotrophic in nature and often difficult to pump when thickened and polymer conditioned. Our design group has designed all types of residuals pumps including progressive cavity, rotary lobe, centrifugal, vortex, and plunger. Many of these installations include variable speed capabilities for controlling residuals feed rates to thickeners and dewatering equipment. Our pump stations are designed from an operator’s perspective, allowing adequate space for maintenance.