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RECORD NUMBER: 17 OF 40

OLS Field Name OLS Field Data
Main Title Disinfection for Potable Reuse.
Author Rogers, S. E. ; Lauer, W. C. ;
CORP Author Denver Water Dept., CO.;Environmental Protection Agency, Cincinnati, OH. Water Engineering Research Lab.
Year Published 1986
Report Number EPA/600/J-86/164;
Stock Number PB87-114617
Additional Subjects Disinfection ; Water treatment ; Urban areas ; Calcium oxides ; Osmosis ; Chlorine oxides ; Bacteria ; Ion exchanging ; Viruses ; Coliform bacteria ; Evaluation ; Reprints ; Potable water reuse project ; Denver(Ohio) ; Reverse osmosis ; Ozonation
Holdings
Library Call Number Additional Info Location Last
Modified
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Status
NTIS  PB87-114617 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 06/21/1988
Collation 7p
Abstract
Potable reuse requires a multiple barrier approach to control pathogens from a grossly contaminated source. The primary multiple pathogen barriers used at the Denver Potable Water Reuse Demonstration Plant are excess lime treatment, ozonation, reverse osmosis, and chlorine dioxide. Undisinfected secondary wastewater effluent is subjected to high-pH lime treatment which inactivates viruses and bacteria, reduces TOC, removes suspended solids, and precipitates heavy metals and phosphorus. Ozone is an effective virucide and bactericide and chemically oxidizes refractory organics. Reverse osmosis is a physical barrier to pathogens and removes ions, certain organics, and nitrogen forms. Chlorine dioxide provides a persistent residual and minimizes the potential for chloro-organic formation. Operational experience is described and disinfection performance evaluated.