Wastewater Disinfection Using Sodium Hypochlorite Generated On-Site from Process Residuals

The West Pasco Landfill in Pasco County, Florida is permitted for six ten-acre lined ash monofil cells as part of its Resource Recovery Facility. Currently, Pasco County has ash in two cells. Rainfall entering these lined cells generates ash leachate (a process residual) which must be collected, treated, and disposed of to the satisfaction of the Florida Department of Environmental Protection (FDEP). Unusually high rainfall amounts in 1997 and 1998, combined with operational problems at the existing Leachate Management Facility (LMF), resulted in excess leachate being stored in two of the monofil cells. Considering the volume of the excess leachate stored in the cells and the treatment capacity of the LMF, Pasco County began evaluation of alternate or supplemental leachate treatment and disposal methods.