3-WWTP Biosolids Modernization Project - Plan Set.pdf

The document is a plan set for the 3-WWTP Biosolids Modernization Project for the City of Sumner Wastewater Treatment Plant in Washington state. The project involves comprehensive upgrades to the solids handling and treatment processes, including constructing an expansion to the existing Solids Handling Building with a new indirect biosolids dryer, thermal fluid heaters, and associated equipment. Key project elements include installing a rotary drum thickener, replacing existing sludge pumps, dewatering polymer systems, and air gap systems, as well as reconfiguring the dewatered sludge conveyance system with conveyor modifications and rehabilitation of the existing storage hopper.

The project scope also encompasses demolition of existing facilities, including the waste gas burner, and installation of a new digester gas treatment system. A temporary haul truck loading bay will be constructed to facilitate demolition activities. The project involves multiple system modifications, such as replacing thickened primary sludge pumps, removing the dissolved air floatation thickener, and installing new equipment to improve the overall efficiency and capacity of the wastewater treatment plant's solids handling processes. While specific pricing details are not provided in the document, the project appears to be a significant municipal infrastructure improvement initiative focused on modernizing biosolids management capabilities.