The town of Monroeville, Ala., faced aeration and mixing issues, sludge buildup in one of its wastewater lagoons, and power bills of $12,500 per month after a major employer relocated its garment manufacturing facility. The company had generated about 90 percent of the wastewater entering the lagoon, and its fees covered 90 percent of the operation and maintenance cost, which included $1,500 per month for aerator maintenance. The lagoon was 80 percent full of biosolids, and the estimated cost to dredge was over $1.6 million. The lagoon had to remain operational and the town needed to reduce costs.
DO2E Waste Water Treatment installed two 5 hp high-volume floating aerators and two 3 hp floating mixers.
In four years of operation, the equipment saved the town some $513,000 in electricity and $72,000 in maintenance, while reducing biosolids buildup by 90 percent.