UNSPSC 47101544: Air diffuser for sewage treatment

A device used to provide air to the water needed for sewage treatment process.

UNSPSC 47101544 Air diffuser for sewage treatment is a Commodity code that state and local governments use to procure components and equipment supporting wastewater aeration, treatment plant modifications, and ancillary systems at municipal and county water reclamation facilities. The code encompasses replacement parts, control systems, and integrated equipment for operating treatment plants — including submersible pumps, valves, flow meters, chemical injection systems, control panels, and rehabilitation of biosolids and aeration equipment — rather than diffusers alone in the narrower sense. Issuing bodies include county water and sewer authorities, city public works and watershed departments, and independent municipal utilities, with Dorchester County, South Carolina and Collier County, Florida appearing as repeat buyers of force-main, pump-station, and water-treatment infrastructure projects. Work ranges from routine maintenance and parts supply to comprehensive plant rehabilitation and new system installation, often at operating facilities requiring bypass pumping and nighttime or weekend work windows.

Recent activity spans Florida, Georgia, South Carolina, Texas, and Oregon. Representative solicitations include Collier County's $3.29 million SCRWTP Lime Softening Improvements – Blend Tank (IFB, due July 15, 2026), which covers chemical systems, concrete structures, piping, and SCADA integration at an operating drinking-water treatment plant; the City of Bremen, Georgia's Turkey Creek WPCP LAS Expansion (sealed bids, due August 13, 2026), encompassing forcemain and spray-field installation in Hancock County; Dorchester County's Pump Station 10 Force Main Replacement (IFB, due May 15, 2026), a $913,000 force-main and flow-meter project requiring 150 calendar days to substantial completion; and the City of Huntsville, Texas's AJ Brown WWTP Chlorine Storage Building Rehabilitation (IFB, due April 7, 2026), a $375,000 installation of chlorine disinfection system components. Sole-source and proprietary-parts procurements appear frequently — Hillsborough County's $6.6 million five-year sole-source award to DXP Enterprises for equipment and maintenance from twelve original-equipment manufacturers, and Marion County, Florida's procurement of Eimco mixer parts for Silver Springs Shores WWTF — reflecting infrastructure lock-in and the technical specialization required to support operating treatment plants.