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REDUCTION OF DISINFECTION BY-PRODUCT PERCURSORS BY NANOFILTRATION
Citation:
Taylor, J., C. Reiss, P. Jones, K. Morris, T. Lyn, D. Smith, L. Mulford, AND S. Duranceau. REDUCTION OF DISINFECTION BY-PRODUCT PERCURSORS BY NANOFILTRATION. U.S. Environmental Protection Agency, Washington, D.C., EPA/600/R-92/023.
Description:
The reduction of disinfection by-product (DBP) precursors by nanofiltration was investigated in Florida at both a groundwater site and a surface water site. eparate studies, involving pilot plant operations, were conducted for one year at each site. he principal research tasks at each site were membrane selection, selection of an appropriate pretreatment process and operation of the membrane pilot plant. At the groundwater site (Daytona Beach, FL), conventional pretreatment (scaling control and pre-filtration) was required to control nanofilter fouling. ver one year of pilot plant operation, the average DBP Formation Potential (DBPFP) in the system permeate was 2O ug/L as Cl, representing a 96 percent reduction in the DBPFP of the raw water. t the surface water site (Melbourne, FL), alum coagulation, GAC filtration and microfiltration were all used as pretreatment options for nanofiltration. ver one ear of pilot plant operation, the average DBPFP in the system permeate of the alum coagulation/nanofiltration combination was 22 ug/L as Cl, representing a 98 percent reduction in the DBPFP of the raw water. sing the pilot plant data, capital and operation and maintenance costs were developed to construct a 10 MGD nanofiltration plant at both the groundwater and surface water sites.