Outage wash wastewater treatment requirements achieved after upgradeProblemA Midwest electric utility had difficulty meeting effluent standards at one of its coal-fired power plants. After closing its coal combustion residual ponds, the utility needed an economical way to treat boiler, precipitator and air preheater wash water. After several pilot attempts by various vendors, the NPDES permit requirements for TSS, pH and heavy metals were not being met.SolutionUnited Conveyor designed, installed and operated an outage wash pilot test for nonchemical water cleaning of air heaters on two units and a precipitator on one unit. The company used an existing remote submerged flight
