Projects

Blower & Aeration System Replacement

March 18, 2016 The Blower Replacement Project involves replacing three existing air blowers and modifying the air distribution system. The scope includes replacing air headers with single designated aeration headers to aeration basins and channels. Aeration basin downcomers, air grids, and associated instrumentation and controls will also be replaced. Equipment for this project will be furnished externally. The blowers and aeration system will integrate with the facility’s electrical and instrumentation systems and other utilities.  The project includes installation of three new externally furnished blowers: two units with 27,000 SCFM capacity and one unit with 35,000 SCFM capacity, used for aeration distribution systems. Additional work includes installation of a motor control center, aeration headers to nine aeration basins and one header to channels, instrumentation such as flow meters, dissolved oxygen meters, control valves, and integration of new aeration grids with the existing air distribution systems. Tie-ins with the existing foul air intake chamber and all associated piping, electrical, and instrumentation are included as outlined in the contract documents.  The electrical system upgrade includes replacing three existing 4160 V synchronous motor starters with new 4160 V motor soft starters equipped with power factor correction capacitors. The upgrade also involves replacing existing 480 V motor control centers (MCCs) and associated wiring with new MCCs and wiring. The scope of work includes demolition of three blowers and much of the aeration system, installation of externally provided replacements, integration with existing equipment, utilities, and control systems, and reconstruction of affected parts of the facility.