The construction of the Emerald Coast Utilities Authority (ECUA) Central Water Reclamation Facility (CWRF) required the installation of over 37 kilometers (23 miles) of sewage transmission mains up to 1372-mm (54-inch) in diameter to divert flow from the existing Main Street Wastewater Treatment Plant (MSWWTP) to the new CWRF. The transmission main route, beginning in downtown Pensacola, included sections within small, urban streets, existing power company electric transmission line easements and easements across previously undisturbed areas. The route also included numerous crossings of major county, state and inter-state highways and railroads as well as wetland areas. Some of the unique aspect of the planning, design and construction of this project are presented.
The Escambia County Utilities Authority (ECUA) is completing performance testing and startup of sludge drying facilities to replace incineration of sludge at its Main Street Wastewater Treatment Plant in Pensacola, Florida. Feed solids to the dryers include undigested primary sludge, waste activated sludge (WAS), and treated septage/grease trap wastes. A fluidized bed drying technology was selected for this application because of its economy at the planned scale, and capability of producing a pellet product with good materials handling characteristics. ECUA is the first municipal installation for this technology in the US. A distribution and marketing (D&M) program is currently being developed, centered on local agricultural users.
KEY WORDSHeat drying, Class A pathogen reduction, product distribution and marketing (D&M), design-build.
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