For years, the West Mifflin Sanitary Sewer Municipal Authority (WMSSMA), located near Pittsburgh, Pennsylvania, hauled liquid from the smaller of its two sewage treatment plants (STP) to its larger STP for dewatering. Hauling, labor, and coordinating dewatering schedules between both plants were costly and difficult. They also faced a requirement to achieve higher cake solids and to provide a means for odor control. Space constraints and staffing reductions demanded a compact, simple-to-operate technology.