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DGR worked jointly with the City of Sanborn, Iowa and a large industrial user to evaluate multiple treatment alternatives. Ultimately, the selection of the MBBR was chosen based on cost, operational flexibility and most importantly, limited land availability. Due to the large fluctuations in the industrial loading, a fixed film treatment technology was selected in lieu of activated sludge. Construction of the project started in the beginning of 2019 and was completed in Spring 2020.
Assisted the City of Luverne in abandoning the industrial wastewater treatment facility formerly owned by Iowa Beef Producers. The former treatment facility consisted of two anaerobic treatment lagoons, one anaerobic transition pond, two aerobic lagoons, and two stabilization ponds. Closure of the facility included land application of industrial by-products, abandonment of structures and piping, closure of monitoring wells, and documentation of closure activities and restrictive covenants.
Designed a SAGR system to be utilized as a polishing step following the City’s aerated lagoon system. The system includes a synthetic liner, aeration lines, rock media, an insulating mulch layer, control structures, and related piping.
Following the SAGR system, a UV disinfection system eliminates bacteria. Also designed a standby generator and related system controls for the SAGR and UV equipment.