The 400,000 gpd wastewater lagoon in Parsons, W.Va., had dissolved oxygen, BOD5, TSS, ammonia, and significant algae problems, resulting in more than 40 state Department of Environmental Protection permit violations in six months.
The surface aeration system — four vertical splasher-type and four horizontal aspirator-type surface aerators installed across six of the seven treatment cells — was the wrong equipment for a lagoon 10 feet deep. Air never reached the bottom, and mixing air and water at the surface created heavy stress on the motors. They failed frequently.
The city solved its problem quickly and cost-effectively by installing a new portable aeration
