A small municipality in Utah (pop. 1,800) had a wastewater system with a flow rate of 192,000 gallons per day. The system included a series of four lagoons, although at this time only Ponds 1 and 2 were being evaluated for treatment.
The influent consisted of domestic waste as well as septic. Pond 1 was specifically being addressed due to a State mandate. A sludge judge was performed which showed Pond 1 had an average sludge depth of 2.7 feet and Pond 2 averaged 1.9 feet. Two years later surfacing sludge prevented a sludge judge from being performed. The system was in need of reducing the sludge in its lagoon wastewater system to meet state requirements quickly in preparation for additional capital changes to the system.