Blowing and drifting snow often closed stretches of Interstate 15 and mountain passes near Dearborn, Mont., backing up traffic to southbound and northbound rest areas.
The high-strength wastewater from these facilities’ two conventional onsite treatment systems had 180 to 250 mg/l total nitrogen (TN). Because the effluent numbers exceeded the state Department of Environmental Quality (DEQ) groundwater standards, officials suggested that the state Department of Transportation (DOT) research advanced treatment technologies.
The DOT published a request for proposals, specifying a DEQ-approved system to remove 60 percent TN. Eliminite in Three Forks, Mont., won the bid with a pre-engineered fixed-film bioreactor invented by
