The City of Mansfield (Ark.) wastewater treatment plant has solved its NPDES permit compliance consistency problems with a recently installed special activated sludge process that replaced an aging packaged extended aeration plant.
The new treatment plant, which incorporates anaerobic, anoxic, and aerobic treatment with integral sludge reduction, has also significantly improved system reliability and simplified maintenance. Because the receiving stream no longer sees effluent with borderline loading, aquatic life is thriving, and fishing has improved in downstream pools. In recognition, the city received a 2009 Arkansas Water Works & Water Environment Association Special Systems Recognition Award in the wastewater category.
During the
