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ACCUMULATION OF CONTAMINANTS IN THE DISTRIBUTION SYSTEM
Citation:
LYTLE, D. A. ACCUMULATION OF CONTAMINANTS IN THE DISTRIBUTION SYSTEM. Presented at 2007 US EPA WORKSHOP ON INORGANIC CONTAMINANT ISSUES, CINCINNATI, OH, August 21 - 23, 2007.
Description:
Removal of arsenic from water using iron-related processes including coagulation with iron salts, iron removal with oxidation/filtration, and specific iron resins is established. These processes are effective because iron solids including minerals and chemical floc have strong adsorption affinities for arsenic. It is therefore reasonable to assume that iron solids that are present as corrosion by-products, scales and sediment in the distribution system would have similar properties and subsequently these materials could serve as a sink for arsenic entering the distribution system. Other contaminants such as radium could also accumulate in the distribution system with time. The objective of this presentation is to provide information on the amount of arsenic and radionuclides that have accumulated in distribution system solids in a number of systems.