LABORATORY ANALYSIS OF DISINFECTION OPTIONS FOR ORANGE COUNTY SANITATION DISTRICT
Authors: Zacheis, G. Adam; Juby, Graham; Hetherington, Michelle; Esquer, Mark
Source: Proceedings of the Water Environment Federation, WEFTEC 2003: Session 31 through Session 40 , pp. 505-528(24)
Publisher: Water Environment Federation
Abstract:The Orange County Sanitation District (OCSD) has investigated the use of various disinfectants (bleach, Peracetic Acid (PAA), Ozone, and Ultraviolet (UV) light radiation) to reduce the bacterial concentration of the combined effluents produced from its treatment Plants Nos. 1 and 2. The goal of this investigation was to determine the dose rates of the disinfection methods to provide a target level for total coliforms of <1000 MPN/100 mL to meet the California ocean plan at the edge of the zone of initial dilution associated with the outfall discharge. Due to dilution of their 120-inch outfall, OCSD can achieve 6-logs of bacterial removal with a combination of a 2-log reduction across the diffuser and a 3 to 4-log reduction by one or more of the disinfection techniques tested.
Document Type: Research Article
Publication date: January 1, 2003
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