UNSPSC 47101570: Oxidation ditch

A bio-chemical reactor that disassembles the polluted substance by supplying the oxygen with the mechanical aerator to the elliptical reaction vessel.

UNSPSC 47101570 Oxidation ditch (Commodity) encompasses water and wastewater treatment equipment and component procurement by state and local water systems, based on recent solicitations that center on replacement parts, equipment upgrades, and specialized maintenance services for activated-sludge and oxidation ditch aeration systems. State and local governments soliciting under this code include municipal water and wastewater utilities, county water departments, and special-purpose water agencies across Florida, Georgia, Texas, and Arizona. Recent opportunities reflect a pattern of sole-source and competitive procurements for proprietary equipment: the City of Holly Hill, Florida procured a WesTech DS43 Dual Shaft Drive replacement for softener #2 at its Water Treatment Plant (sole-source notice, posted October 19, 2026, $113,067 total); the City of Holly Hill also issued sole-source notices on the same date for Xylem Flygt OEM pumping components, Chemco Systems lime slaking equipment, and Andritz Separation belt press separator parts—all restricting competition to original manufacturers and authorized service providers due to proprietary design and compatibility requirements. Collier County, Florida issued a countywide chemicals ITB (due November 13, 2026) covering 29 chemical line items for water and wastewater treatment with annual spend approximating $4,000,000, while Gwinnett County, Georgia, has been actively procuring polymer blending units, grinder equipment, and bypass pumping services through multiple ITBs across the same period.

Geographic concentration appears heaviest in Florida (Holly Hill, Collier County, Palm Bay, Pompano Beach, Tampa, Winter Park, Marion County) and Georgia (Gwinnett County, DeKalb County Schools, Calhoun, Athens-Clarke County), with secondary activity in Texas (Waxahachie, McKinney, Bell County, Collin County), Arizona (Phoenix), and California (Sacramento County). The code shows active demand for solids handling, membrane diffusers, instrumentation, chemical treatment systems, and turnkey aeration equipment across both water and wastewater operations, with contract terms typically ranging from one to five years and values spanning from under $100,000 for parts procurements to $11 million for capital facility upgrades. Sole-source procurement dominates where equipment is proprietary or system-integrated, while competitive sealed bids and RFPs appear for commodity chemicals, generic parts, and services where multiple vendors can substitute.