DBP and Hardness Control by Membrane Filtrationby Charles D. Turner, Univ of Texas at El Paso, El Paso, United States,
Srinivasa R. Kadubandi, Univ of Texas at El Paso, El Paso, United States,
Abstract: Ultra (UF) and nanofiltration (NF) were evaluated for removal of disinfection by-product (DBP) precursors and hardness from Rio Grande water in New Mexico and Texas. In order to compare hardness and precursor removal at Elephant Butte Reservoir, New Mexico, and El Paso, Texas, pilot plant testing was conducted using membranes with selected molecular weight cutoffs (MWCs). All the UF and NF membranes removed hardness, but only the 600 and 1,000 MWC membranes removed DBP precursors successfully.
Subject Headings: Membranes | Hardness (material) | Filtration | Water treatment plants | Wastes | Developing countries | Nanomechanics | North America | United States | Rio Grande | Texas | New Mexico
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